Means for the submerged introduction of a fluid into a body of liquid

Claim 2

A nozzle for the delivery of a liquid under pressure, which nozzle comprises a valve body having a vertical axial bore with an inlet end and an outlet end, and with an internal annular shoulder formed at the outlet end of said bore, a valve closure member for closing said outlet end, a stem having an outer end portion connected to said closure member, said stem extending into said bore, and having stop means at its inner end, and a compression coil spring inserted through the inlet end of said base, surrounding said stem and confined between said annular shoulder and said stop means, and effective to allow liquid under pressure to be emitted, and to urge the closure member into closing position when the liquid pressure drops, said spring being formed with a constriction at each end encircling the stem for loosely guiding the stem axially relative to the spring, the spring itself being sized to be guided along its length in and by said bore.

Claim 3

The nozzle according to claim 1, wherein at least one of said constrictions is in the form of a terminal loop encircling the stem.

Claim 4

The nozzle according to claim 1, wherein at least one of said constrictions comprises a half round coil portion of the spring, a loop portion encircling the spring, a first straight portion connecting the end of the half round portion tangentially with one end of the loop, a second straight portion extending tangentially from the other end of the loop, and opposite to said first straight portion, and having a laterally directed terminal extension, said terminal extension and said corner portion being located opposite each other and adapted to rest upon the adjacent coil of the spring when under compression.

Claim 5

The nozzle according to claim 1, wherein at least one of said constrictions comprises a coil of reduced diameter interposed between adjacent larger coils of the spring.

Claim 6

The nozzle according to claim 1, wherein the outlet end of the valve housing has an external concentric annular groove shaped for the retention therein of a sealing ring of elastically deformable material, with the addition of a sealing ring of elastically deformabLe material self-retained in said annular groove, and providing a seat for a valve closure member.

Claim 7

The nozzle according to claim 5, wherein said annular groove extends along the outer periphery of said valve body, so that the outer periphery of the sealing ring therein is outwardly exposed.

Claim 8

The nozzle according to claim 1, wherein the inlet end of said valve body is provided with internal thread.

Claim 9

The nozzle according to claim 1, wherein said stem is in the form of a screw bolt having a head located adjacent the inlet end of said bore.

Claim 10

The nozzle according to claim 1, wherein said stem is thread-connected with said closure member.

Claim 11

The nozzle according to claim 1, wherein said sealing ring is in the form of an O-ring having circular cross-sectional profile, and said annular groove extends along the outer periphery of said valve body so that the outer periphery of said O-ring is outwardly exposed.

Claim 12

The nozzle according to claim 1, wherein the outlet end of the valve body has a concentric annular groove, a sealing ring of elastically deformable material self-retained in said groove, and providing a seat for said closure member, wherein said closure member at the underside thereof is formed with an inverted trunco-conical concentric portion, and wherein the discharge end of said valve portion is formed with a concentric bevelled face substantially corresponding to the conicity of said trunco-conical portion, and having a clearance relative thereto when said closure member is seated on said sealing ring.

Claim 13

The nozzle according to claim 1, wherein said valve body is in the form of a thick-walled tubular member having the outlet end formed with a peripheral annular outwardly open groove shaped for the retention therein of said sealing ring, and wherein the inlet end of said valve body is provided with internal thread.

Claim 14

In an apparatus for the hydraulic upflow classification of pulps in a teeter bed, a teeter water induction system for the submerged delivery of teeter water under pressure at the bottom of the liquid body representing the teeter bed, which system comprises substantially horizontally extending duct means supplied with operating water under pressure, and having spaced therealong upwardly directed threaded nipples, a plurality of induction nozzles for the teeter water connected to respective nipples, and spaced in mutually cooperative relationship to one another for maintaining said upflow classification, said nozzles comprising a valve body having a vertical axial bore, a threaded inlet end for threaded connection with a respective nipple, and an outlet end having an internal annular shoulder, and also having a concentric annular groove provided in said outlet end, and shaped for the retention therein of a sealing ring of elastically deformable material, a sealing ring of elastically deformable material self-retained in said annular groove, and providing a seat for a valve closure member, a valve closure member for closing said outlet end of the valve body, a valve sealing surface shaped for emitting teeter water radially in all directions relative to the axis of said bore, a stem having an outer end connected to said closure member, said stem extending into said bore, and having stop means at its inner end, and a compression coil spring inserted through the inlet end of said bore, surrounding said stem and confined between said annular shoulder and said stop means, and effective to allow liquid under pressure to be emitted, and to urge the closure member into closing position when the pressure of the operating water drops, said spring being formed with a constriction at each end encircling the stem for loosely guiding the stem axially relative to the spring, the spring itself being sized to be guided along its length by said bore.

Claim 15

In an apparatus for the hydraulic upflow classification of pulps in a teeter bed, a teeter water induction system for the submerged delivery of teeter water under pressure at the bottom of the liquid body representing the teeter bed, which system comprises substantially horizontally extending duct means supplied with operating water under pressure, and having spaced therealong upwardly directed threaded nipples, a plurality of induction nozzles for the teeter water connected to respective nipples, and spaced in mutually cooperative relationship to one another for maintaining said upflow classification, said nozzles comprising a valve body having a vertical axial bore, a threaded inlet end for threaded connection with a respective nipple, and an outlet end having an internal annular shoulder, and also having a concentric annular groove provided in said outlet end, and shaped for the retention therein of a sealing ring of elastically deformable material, a sealing ring of elastically deformable material self-retained in said annular groove, and providing a seat for a valve closure member, a valve closure member for closing said outlet end of the valve body, a valve sealing surface shaped for emitting teeter water radially in all directions relative to the axis of said bore, a stem having an outer end connected to said closure member, said stem extending into said bore, and having stop means at its inner end, and a compression coil spring inserted through the inlet end of said bore, surrounding said stem and confined between said annular shoulder and said stop means, and effective to allow liquid under pressure to be emitted, and to urge the closure member into closing position when the pressure of the operating water drops, said spring being formed with a constriction at each end encircling the stem for loosely guiding the stem axially relative to the spring, the spring itself being sized to be guided along its length by said bore.

Claim 16

In an apparatus for the hydraulic upflow classification of pulp in a teeter bed, a teeter water induction system for the submerged delivery of teeter water unDer pressure at the bottom of the liquid body representing the teeter bed, which system comprises substantially horizontally extending duct means supplied with operating water under pressure, and having spaced therealong upwardly directed threaded nipples, a plurality of induction nozzles for the teeter water connected to respective nipples and spaced in mutually cooperative relationship to one another for maintaining said upflow classification, said nozzles comprising a valve body having a vertical axial bore, a threaded inlet end for threaded connection with a respective nipple, and a discharge end having an internal annular shoulder, and also having a concentric external annular groove provided in said discharge end, and shaped for the retention therein of a sealing ring of elastically deformable material, a sealing ring of elastically deformable material self-retained in said annular groove, and providing a seat for a valve closure member, a valve closure member for closing said discharge end, having a valve sealing surface shaped for emitting teeter water radially in all directions, relative to the axis of said bore, a stem having an outer end which is thread-connected to said closure member, said stem extending into said bore, and having stop means at its inner end, and a compression coil spring inserted through the inlet end of said bore, surrounding said stem and confined between said annular shoulder and said stop means and effective to allow teeter water to be emitted horizontally radially in all directions when the pressure of the operating water exceeds the combined spring pressure and hydrastatic pressure of the teeter bed, and to urge the closure member into closing position on said sealing ring when the operating water pressure drops.

Claim 17

In an apparatus for the hydraulic upflow classification of pulp in a teeter bed, a teeter water induction system for the submerged delivery of teeter water unDer pressure at the bottom of the liquid body representing the teeter bed, which system comprises substantially horizontally extending duct means supplied with operating water under pressure, and having spaced therealong upwardly directed threaded nipples, a plurality of induction nozzles for the teeter water connected to respective nipples and spaced in mutually cooperative relationship to one another for maintaining said upflow classification, said nozzles comprising a valve body having a vertical axial bore, a threaded inlet end for threaded connection with a respective nipple, and a discharge end having an internal annular shoulder, and also having a concentric external annular groove provided in said discharge end, and shaped for the retention therein of a sealing ring of elastically deformable material, a sealing ring of elastically deformable material self-retained in said annular groove, and providing a seat for a valve closure member, a valve closure member for closing said discharge end, having a valve sealing surface shaped for emitting teeter water radially in all directions, relative to the axis of said bore, a stem having an outer end which is thread-connected to said closure member, said stem extending into said bore, and having stop means at its inner end, and a compression coil spring inserted through the inlet end of said bore, surrounding said stem and confined between said annular shoulder and said stop means and effective to allow teeter water to be emitted horizontally radially in all directions when the pressure of the operating water exceeds the combined spring pressure and hydrastatic pressure of the teeter bed, and to urge the closure member into closing position on said sealing ring when the operating water pressure drops.

Claim 18

The induction system according to claim 14, wherein said annular groove extends along the outer periphery of said valve body, so that the outer periphery of the sealing ring therein is outwardly exposed and accessible.

Claim 19

The induction system according to claim 14, said duct means have externally threaded nipples, and wherein the inlet end of said valve body is provided with internal thread engaging an externally threaded nipple.

Claim 20

The system according to claim 14, wherein said stem is in the form of a screw bolt having a head located adjacent to the inlet end of said bore, and wherein said spring has ends of the same diameter, the rearward end portion of said spring having an inwardly extending wire portion formed with a loop hugging said stem and engaging said head portion thereby providing a substantially free annular through flow area around said head.

Claim 21

The system according to claim 14, wherein the rearward end of said spring has an inwardly extending wire portion formed with a loop hugging said stem.

Claim 22

The system according to claim 14, wherein the rearward end of said spring has a constricted portion hugging said stem.

Claim 23

The system according to claim 14, wherein said sealing ring is in the form of an O-ring having circular cross-sectional profile, and said groove extends along the outer periphery of said valve body, so that the outer periphery of said O-ring is outwardly exposed and accessible.

Claim 24

The system according to claim 14, wherein said closure member at the underside thereof is formed with an inverted trunco-conical concentric portion, and wherein the discharge end of said valve body is formed with a concentric bevelled face substantially corresponding to the conicity of said trunco-conical portion, and having clearance relative thereto when said closure member is seated on said sealing ring.

Claim 25

The system according to claim 14, wherein said valve body is in the form of a thick walled tubular member having the outlet end formed with a peripheral annular outwardly open groove shaped for the retention of said sealing ring, wherein said duct means have externally threaded nipples, and wherein the inlet end of said valve body is provided with internal thrEad engaging an externally threaded nipple.

Claim 26

A nozzle for the delivery of a liquid supplied under pressure, which nozzle comprises a valve body having a vertical axial bore with an inlet end and an outlet end, and with an internal annular shoulder formed at the outlet end of said bore, said valve body also having at the outlet end an external concentric annular groove shaped for the retention therein of a sealing ring of elastically deformable material, a sealing ring of elastically deformable material self-retained in said annular groove, and providing a seat for a closure member, a valve closure member for closing said outlet end, having a valve sealing surface shaped for emitting said operating liquid radially in all directions relative to the axis of said bore, a stem having an outer end portion connected to said closure member, said stem extending into said bore, and having stop means at its inner end, and a compression coil spring inserted through the inlet end of said bore, surrounding said stem and confined between said annular shoulder and said stop means, and effective to allow liquid under pressure to be emitted radially in all directions relative to the axis of said bore, and to urge the closure member into closing position on said sealing ring when the liquid pressure drops.

Claim 27

A nozzle for the delivery of a liquid supplied under pressure, which nozzle comprises a valve body having a vertical axial bore with an inlet end and an outlet end, and with an internal annular shoulder formed at the outlet end of said bore, said valve body also having at the outlet end an external concentric annular groove shaped for the retention therein of a sealing ring of elastically deformable material, a sealing ring of elastically deformable material self-retained in said annular groove, and providing a seat for a closure member, a valve closure member for closing said outlet end, having a valve sealing surface shaped for emitting said operating liquid radially in all directions relative to the axis of said bore, a stem having an outer end portion connected to said closure member, said stem extending into said bore, and having stop means at its inner end, and a compression coil spring inserted through the inlet end of said bore, surrounding said stem and confined between said annular shoulder and said stop means, and effective to allow liquid under pressure to be emitted radially in all directions relative to the axis of said bore, and to urge the closure member into closing position on said sealing ring when the liquid pressure drops.

Claim 28

The nozzle according to claim 23, wherein said annular groove extends along the outer periphery of said valve body, so that the outer periphery of the sealing ring therein is outwardly exposed.

Claim 29

The nozzle according to claim 23, wherein the inlet end of said valve body is provided with internal thread.

Claim 30

The nozzle according to claim 23, wherein said stem is in the form of a screw bolt having a head located adjacent to the inlet end of said bore, and wherein the rearward end portion of said spring has an inwardly extending wire portion formed with a loop hugging said stem and engaging said head portion, thereby providing a substantially free through flow area around said head.

Claim 31

The nozzle according to claim 23, wherein the rearward end of said spring has an inwardly extending wire portion formed with a loop hugging said stem.

Claim 32

The nozzle according to claim 23, wherein the rearward end of the spring wire has a constricted portion hugging said stem.

Claim 33

The nozzle according to claim 23, wherein said sealing ring is in the form of an O-ring having circular cross-sectional profile, and said annular groove extends along the outer periphery of said valve body so that the outer periphery of said O-ring is outwardly exposed.

Claim 34

The nozzle according to claim 23, wherein said closure member at the underside thereof is formed with an inverted trunco-conical concentric portion and wherein the discharge end of said valve body is formed with a concentric bevelled face substantially corresponding to the conicity of said trunco-conical portion, and having clearance relative thereto when said closure member is seated on said sealing ring.

Claim 35

The nozzle according to claim 23, wherein said valve body is in the form of a thick walled tubular member having the outlet end formed with a peripheral annular outwardly open groove shaped for the retention therein of said sealing ring, and wherein the inlet end of said valve body is provided with internal thread.

Claim 36

The nozzle according to claim 23, wherein said stem is thread-connected to said closure member.