CN221144749U - Pump valve - Google Patents
Pump valve Download PDFInfo
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- CN221144749U CN221144749U CN202321781688.2U CN202321781688U CN221144749U CN 221144749 U CN221144749 U CN 221144749U CN 202321781688 U CN202321781688 U CN 202321781688U CN 221144749 U CN221144749 U CN 221144749U
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- 239000007788 liquid Substances 0.000 claims abstract description 561
- 238000007789 sealing Methods 0.000 claims abstract description 190
- 210000001503 joint Anatomy 0.000 claims abstract description 13
- 210000002445 nipple Anatomy 0.000 claims description 143
- 238000003825 pressing Methods 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 13
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000012530 fluid Substances 0.000 description 7
- 241001391944 Commicarpus scandens Species 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The present utility model relates to a pump valve. Specifically, the pump valve includes the valve casing, the valve casing includes valve body and letter body locating sleeve and valve body stop collar of sealing connection on the valve body respectively, the butt joint position of valve body and letter body locating sleeve sets up the feed liquor check valve, the butt joint position of valve body and valve body stop collar sets up the flowing back check valve, feed liquor chamber and flowing back chamber have respectively to letter body locating sleeve and valve body stop collar, the one end roof pressure of the spring of the hydraulic feed liquor case that the feed liquor check valve contained is on the chamber wall in feed liquor chamber, the other end roof pressure is on the hydraulic feed liquor case, the one end roof pressure of the spring of the hydraulic feed liquor case that the flowing back check valve contained is on the chamber wall in flowing back chamber, the other end roof pressure is on the flowing back case, when this pump valve is in use, the case receives hydraulic pressure compression spring, spring extrusion liquid chamber wall, spring and chamber wall area of contact are big, the atress is even, the spring is difficult for breaking, use part is few, simple structure simple to install, good reliability, life is high.
Description
Technical Field
The utility model relates to the technical field of elastic fluid pumps, in particular to a pump valve.
Background
In the continuous operation working condition of a water injection pump of key equipment in the oilfield oil extraction process, working medium (oilfield sewage) is conveyed by a pump valve. At present, three-cylinder and five-cylinder reciprocating high-pressure plunger pumps are widely used in oil fields at home and abroad, and the pump valve is used as a wearing part in a large amount.
The utility model patent with the authority of publication number CN208380839U discloses a water injection pump combined valve, which comprises a box body positioning sleeve, a valve body and a valve body limiting sleeve; the letter body locating sleeve and the valve body limiting sleeve limit the valve body, the letter body locating sleeve and the valve body limiting sleeve are in sealing connection, a liquid inlet channel and a liquid outlet channel are arranged on the valve body, a liquid inlet one-way valve is arranged between the letter body locating sleeve and the valve body, and a liquid outlet one-way valve is arranged between the valve body and the valve body limiting sleeve.
The valve body is sealed with the liquid inlet valve plate and the liquid discharge valve plate by adopting a plane, the valve plate contacted with the sealing surface of the valve body is extremely easy to be filled with temporary plugging agent and impurities of particles, so that the valve plate cannot be closed in time, and the reliability is poor in working.
Moreover, the check valve of the liquid discharge valve adopts spring sleeve to install on the bolt, one end of the liquid discharge spring is propped against the liquid discharge valve plate, one end of the liquid discharge spring is propped against the spring seat, the liquid discharge valve plate is subjected to hydraulic action when the liquid discharge valve is used for liquid discharge, the liquid discharge spring is compressed, the spring seat and the nut are extruded, the spring and the spring seat are broken easily due to small stress area and concentrated stress points, and the bolt is easy to slide.
Disclosure of utility model
The utility model aims to provide a pump valve, which solves the technical problem that in the prior art, a spring is sleeved on a bolt and is propped against a spring seat to cause the spring compression structure to be easy to break due to sliding.
The pump valve comprises a valve shell, wherein the valve shell comprises a valve body, a letter body locating sleeve and a valve body limiting sleeve which are respectively and hermetically connected to the valve body, a liquid inlet one-way valve is arranged at the butt joint position of the valve body and the letter body locating sleeve, a liquid outlet one-way valve is arranged at the butt joint position of the valve body and the valve body limiting sleeve, a liquid inlet cavity and a liquid outlet cavity are respectively arranged at the butt joint position of the letter body locating sleeve and the valve body limiting sleeve, one end of a spring of a pressing liquid inlet valve core contained in the liquid inlet one-way valve is pressed on the cavity wall of the liquid inlet cavity, the other end of the spring of a pressing liquid outlet valve core contained in the liquid outlet one-way valve is pressed on the cavity wall of the liquid outlet cavity, and the other end of the spring of the pressing liquid outlet valve core is pressed on the liquid outlet valve core.
The utility model improves on the basis of the existing pump valve, the spring of the jacking liquid inlet valve core and the spring of the jacking liquid outlet valve core contained in the liquid inlet check valve are respectively jacked on the cavity wall of the liquid inlet cavity and the cavity wall of the liquid outlet cavity, when in use, the liquid inlet valve core and the liquid outlet valve core are subjected to the hydraulic action, the corresponding springs are compressed, the springs are extruded on the cavity wall of the liquid inlet cavity and the cavity wall of the liquid outlet cavity, the contact area between the springs and the cavity wall is large, the stress is even, the springs are not easy to break, the number of used parts is small, the structure is simple, the installation is convenient, the reliability is good, and the service life is long.
Further, necking sections are respectively arranged on the liquid inlet valve core and the liquid outlet valve core, springs of the pressing liquid inlet valve core and the liquid outlet valve core are reducing springs with one end having large diameter and one end having small diameter, the large diameter ends are pressed against the cavity walls of the corresponding liquid inlet cavity or the liquid outlet cavity, the small diameter ends are sleeved on the necking sections of the corresponding liquid inlet valve core or the liquid outlet valve core, the rigidity of the small diameter ends of the reducing springs is larger than that of the end parts of common springs with the same radial dimension, the reducing springs are not easy to deform, the small diameter ends of the reducing springs are matched with the necking ends of the liquid inlet valve core or the liquid outlet valve core, the fastening connection structure of the reducing springs is compact, the space of the reducing springs can be saved, and the resistance of liquid flowing in the liquid inlet process and the liquid outlet process is reduced.
Further, the end plates are respectively arranged on the liquid inlet valve core and the liquid outlet valve core, the end plates are provided with the overflow holes, the radial dimension of the end plates is matched with the inner diameters of the corresponding liquid inlet cavity and the liquid outlet cavity, the diameters of springs for jacking the liquid inlet valve core and the liquid outlet valve core are consistent with the diameters of the end plates, and the end parts of the springs for jacking the liquid inlet valve core and the liquid outlet valve core are jacked on the end plates.
Further, the valve body is provided with the liquid inlet concave cavity and the liquid discharge concave cavity, the liquid inlet concave cavity is screwed with the liquid inlet sealing nipple, the liquid discharge concave cavity is screwed with the liquid discharge sealing nipple, the liquid inlet valve core and the liquid discharge valve core are respectively matched with ports of the liquid inlet sealing nipple and the liquid discharge sealing nipple in a sealing manner to realize the blocking of the check valve, the pump valve is used as a wearing part, when the liquid inlet sealing nipple and the liquid discharge sealing nipple corrode or puncture with the sealing surface of the valve body, the liquid inlet sealing nipple and the liquid discharge sealing nipple can be directly detached from the liquid inlet concave cavity and the liquid discharge concave cavity, the regular maintenance and the assembly are convenient, and the working efficiency of the pump valve is improved.
Further, the liquid inlet valve core and the liquid discharge valve core are provided with guide structures which can be matched with the liquid inlet sealing nipple and the liquid discharge sealing nipple, the guide structures are multi-support leg guide frames which are uniformly arranged along the axes of the liquid inlet valve core and the liquid discharge valve core, the liquid inlet valve core guide frames and the liquid discharge valve core guide frames enable the liquid inlet valve core and the liquid discharge valve core to move relative to the valve body along the axes of the inner walls of the liquid inlet sealing nipple and the liquid discharge sealing nipple respectively, the guide frames enable the liquid inlet valve core and the liquid discharge valve core to be matched with the liquid inlet sealing nipple and the liquid discharge sealing nipple quickly and efficiently, the valve core is prevented from deviating from the sealing nipple during pump valve operation, and the support leg guide frames are convenient for media to guide through the valve core at multiple positions during medium passing, so that the guide efficiency is high, the structure is stable, and the working efficiency of the pump valve is improved.
Further, the conical surfaces between the liquid inlet valve core and the liquid discharge valve core are in sealing fit with the liquid inlet sealing nipple and the liquid discharge sealing nipple, when the liquid inlet valve is used, the liquid inlet valve core and the liquid discharge valve core are extruded by the liquid inlet spring and the liquid discharge spring, large particles can be extruded or cut off at the contact positions of the liquid inlet sealing nipple and the liquid discharge sealing nipple and the conical surfaces of the liquid inlet valve core and the liquid discharge valve core, the particles cannot be blocked in the pump valve, and the pump valve can be suitable for liquid containing impurity particles.
Further, an elastic sealing gasket is arranged between the liquid inlet valve core and the liquid discharge valve core and the contact part of the liquid inlet sealing nipple and the liquid discharge sealing nipple, the impact of the liquid inlet valve core and the liquid discharge valve core on the liquid inlet sealing nipple and the liquid discharge sealing nipple can be reduced by the elastic sealing gasket, the service life of a pump valve is prolonged, the liquid inlet valve core and the liquid discharge valve core can be prevented from sliding relatively when being in close contact with the liquid inlet sealing nipple and the liquid discharge sealing nipple, the liquid inlet sealing nipple and the liquid discharge sealing nipple are respectively in sealing connection with the liquid inlet valve core and the liquid discharge valve core, a closed sealing ring surface is formed, and the sealing performance is improved.
Furthermore, the liquid inlet one-way valve and the liquid outlet one-way valve have the same structure, and are good in universality, convenient to produce and manufacture and convenient to maintain warehouse spare parts.
Drawings
FIG. 1 is a schematic diagram of a pump valve according to a first embodiment of the present utility model;
FIG. 2 is a schematic view of a liquid inlet seal nipple of a first embodiment of the pump valve of the present utility model;
FIG. 3 is a schematic view of a fluid inlet valve cartridge of a first embodiment of a pump valve of the present utility model;
FIG. 4 is a schematic diagram of a pump valve according to a second embodiment of the present utility model;
FIG. 5 is a schematic diagram of a fluid inlet valve core of a second embodiment of a pump valve of the present utility model;
In the figure: 1. A liquid inlet spring; 2. a liquid inlet valve core; 3. a liquid inlet sealing nipple; 4. a liquid inlet concave cavity; 5. a liquid discharge spring; 6. a liquid discharge valve core; 7. a liquid discharge sealing nipple; 8. a liquid discharge concave cavity; 9. a liquid inlet channel; 10. a liquid discharge channel; 11. a sealing gasket; 12. an elastic sealing gasket; 13. an overflow hole; 14. an end plate; 15. a guide frame; 16. reducing the diameter step; 17. an inner conical surface; 18. an outer conical surface; 19. threaded connection; 20. a liquid inlet cavity; 21. a liquid discharge cavity.
Detailed Description
The features and capabilities of the present utility model are described in further detail below in connection with the examples.
Specific example of the pump valve of the present utility model:
The pump valve, as shown in fig. 1-3, comprises: the valve casing comprises a letter body locating sleeve, a valve body and a valve body limiting sleeve, the valve body is limited by the letter body locating sleeve and the valve body limiting sleeve, a liquid inlet one-way valve is arranged at the butt joint position of the valve body and the letter body locating sleeve, a liquid draining one-way valve is arranged at the butt joint position of the valve body and the valve body limiting sleeve, the liquid inlet one-way valve and the liquid draining one-way valve are identical in structure, good in universality and convenient to maintain. The letter body locating sleeve and the valve body limiting sleeve are respectively provided with a liquid inlet cavity 20 and a liquid outlet cavity 21, namely one end of the valve body is connected with the valve body limiting sleeve in a sealing manner, the other end of the valve body is connected with the letter body locating sleeve in a sealing manner, and sealing is realized among the letter body locating sleeve, the valve body and the valve body limiting sleeve through a sealing gasket 11.
In the first embodiment, one end of a spring of the pressing liquid inlet valve core 2 contained in the liquid inlet check valve is pressed against the cavity wall of the liquid inlet cavity 20, the other end of the spring is pressed against the liquid inlet valve core 2, the spring is called as a liquid inlet spring 1 in the first embodiment, one end of a spring of the pressing liquid outlet valve core 6 contained in the liquid outlet check valve is pressed against the cavity wall of the liquid outlet cavity 21, the other end of the spring is pressed against the liquid outlet valve core 6, the spring is called as a liquid outlet spring 5 in the first embodiment, necking ends are respectively arranged on the liquid inlet valve core 2 and the liquid outlet valve core 6, the liquid inlet spring 1 and the liquid outlet spring 5 of the pressing valve core are reducing springs with large diameters at one end and small diameters at one end, and the reducing springs are high in rigidity and are not easy to break. The big footpath end roof pressure of feed liquor spring 1 is on the chamber wall of feed liquor chamber 20, and the big footpath end roof pressure of flowing back spring 5 is on the chamber wall of flowing back chamber 21, and the path end of feed liquor spring 1 cup joints on the necking down end of feed liquor case 2, and the path end of flowing back spring 5 cup joints on the necking down end of flowing back case 6, and the chamber wall of spring extrusion feed liquor chamber 20 and the chamber wall of flowing back chamber 21, and the spring is big with chamber wall area of contact, and the atress is even, and the spring is difficult for the fracture, simple structure simple to operate, good reliability, life height.
In the first embodiment, the liquid inlet check valve and the liquid discharge check valve further comprise a liquid inlet sealing nipple 3 and a liquid discharge sealing nipple 7 which are in sealing fit with the liquid inlet valve core 2 and the liquid discharge valve core 6, the liquid inlet cavity 4 and the liquid discharge cavity 8 are arranged on the valve body, the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 are respectively screwed in the liquid inlet cavity 4 and the liquid discharge cavity 8 through threads, namely the liquid inlet sealing nipple 3 is connected with the internal threads 19 of the liquid inlet cavity 4 through external threads, the liquid discharge sealing nipple 7 is connected with the internal threads 19 of the liquid discharge cavity 8 through external threads, the pump valve is used as a wearing part, when the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 are corroded or stabbed with the sealing surface of the valve body, the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 can be directly detached from the valve body, and regular maintenance and assembly are convenient.
In the first embodiment, the liquid inlet valve core 2 and the liquid outlet valve core 6 are provided with guide structures which can be matched with the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7, the guide structures are guide frames 15 with multiple support legs uniformly distributed along the axes of the liquid inlet valve core 2 and the liquid outlet valve core 6, the guide frames 15 of the liquid inlet valve core and the guide frames 15 of the liquid outlet valve core can respectively extend into the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7, the guide frames 15 of the liquid inlet valve core and the guide frames 15 of the liquid outlet valve core enable the liquid inlet valve core 2 and the liquid outlet valve core 6 to respectively move along the inner wall axes of the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 relative to the valve body, the valve core is prevented from deviating from the sealing nipple when a pump valve works, and the support frames are convenient for guiding media through the valve core at multiple positions when the support frames pass through, so that the guide efficiency is high, the working reliability of the liquid inlet valve core 2 and the liquid outlet valve core 6 is improved, the sealing quality of the liquid inlet valve core 2 and the liquid outlet valve core 6 and the valve body is improved, and the working efficiency of the pump valve is improved.
In the first embodiment, through holes of the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 are respectively in conical surface fit sealing connection with the liquid inlet valve core 2 and the liquid discharge valve core 6, large particles can be extruded or cut off at the contact part of the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 with the conical surfaces of the liquid inlet valve core 2 and the liquid discharge valve core 6, and the phenomenon that the pump valve cannot work due to the blocking of the particles in the pump valve is avoided. The conical surfaces of the liquid inlet valve core 2 and the liquid outlet valve core 6 are provided with annular grooves for placing elastic sealing gaskets 12, the elastic sealing gaskets 12 are arranged between the contact parts of the liquid inlet valve core 2 and the liquid outlet valve core 6 and the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7, in the embodiment, the elastic sealing gaskets 12 are polyurethane gaskets, namely the polyurethane gaskets are placed in the annular grooves, and the impact force of the inner conical surfaces 17 of the liquid inlet valve core 2 and the liquid outlet valve core 6 to the outer conical surfaces 18 of the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 is reduced.
In the first embodiment, the valve body is provided with the liquid inlet channel 9 and the liquid outlet channel 10, the liquid inlet channel 9 is a channel which is vertically led into the liquid inlet cavity 4, the liquid outlet channel 10 is a channel which is inclined by 30-40 degrees relative to the central axis of the liquid outlet cavity 8 and is led into the liquid outlet cavity 8, the wall thickness between the liquid inlet channel 9 and the liquid outlet channel 10 is increased, the strength of the valve body is increased, and the liquid inlet channel 9 and the liquid outlet channel 10 are at least uniformly arranged two, so that the liquid inlet efficiency and the liquid outlet efficiency are improved.
When the water injection pump feeds liquid, the plunger of the water injection pump pumps, the liquid discharge valve core 6 is attached to the conical surface of the liquid discharge sealing nipple 7 to close the liquid discharge channel 10 under the multiple actions of pumping negative pressure, liquid discharge spring 5 and hydraulic pressure in the liquid discharge cavity 21, meanwhile, the liquid inlet valve core 2 compresses the conical surface attached to the liquid discharge sealing nipple 7 to separate under the action of pumping negative pressure, the liquid inlet channel 9 is opened, and liquid enters the liquid inlet cavity 20 through the box body positioning sleeve to realize liquid inlet.
When the water injection pump discharges liquid, the plunger of the water injection pump pushes and presses, the liquid inlet valve core 2 is closed with the conical surface of the liquid inlet sealing nipple 3 under the hydraulic action in the liquid inlet spring 1 and the liquid inlet cavity 20, meanwhile, the liquid discharge valve core 6 is separated from the conical surface of the liquid discharge sealing nipple 7 under the hydraulic action of the liquid discharge cavity 8, the liquid discharge channel 10 is opened, and liquid enters the liquid discharge cavity 21 through the valve body limiting sleeve, so that liquid discharge is realized.
When the hydraulic fluid inlet valve is used, the liquid inlet spring 1 and the liquid outlet spring 5 are respectively propped against the cavity wall of the liquid inlet cavity 20 and the cavity wall of the liquid outlet cavity 21, the liquid inlet valve core 2 and the liquid outlet valve core 6 are subjected to hydraulic action to compress the corresponding springs, the springs squeeze the cavity wall of the liquid inlet cavity 20 and the cavity wall of the liquid outlet cavity 21, the contact area of the springs and the cavity wall is large, the stress is uniform, the springs are not easy to break, few parts are used, the liquid inlet valve core 2 and the liquid outlet valve core 6 are respectively matched with conical surfaces of the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 in a sealing way, large particles are extruded or cut off at the contact positions of the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 with the conical surfaces of the liquid inlet valve core 2 and the liquid outlet valve core 6, the pump valve is suitable for liquid containing impurity particles, the liquid inlet sealing nipple 3 is connected with the inner threads of the liquid inlet cavity 4 through the outer threads, the liquid outlet sealing nipple 7 is connected with the inner threads of the cavity 8 through the outer threads 19 through the outer threads, if the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 corrodes or the valve body 7 is corroded, the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 can be directly detached from the valve body or the valve body is high in service life, and the hydraulic fluid inlet sealing nipple is convenient to be assembled, and the valve body is convenient to be conveniently assembled, and the service life is long.
Specific examples of pump valves of the present utility model are two:
The pump valve, as shown in fig. 4-5, comprises: the valve casing comprises a letter body locating sleeve, a valve body and a valve body limiting sleeve, the valve body is limited by the letter body locating sleeve and the valve body limiting sleeve, a liquid inlet one-way valve is arranged at the butt joint position of the valve body and the letter body locating sleeve, a liquid draining one-way valve is arranged at the butt joint position of the valve body and the valve body limiting sleeve, the liquid inlet one-way valve and the liquid draining one-way valve are identical in structure, good in universality and convenient to maintain. The letter body locating sleeve and the valve body limiting sleeve are respectively provided with a liquid inlet cavity 20 and a liquid outlet cavity 21, namely one end of the valve body is connected with the valve body limiting sleeve in a sealing manner, the other end of the valve body is connected with the letter body locating sleeve in a sealing manner, and the letter body locating sleeve, the valve body and the valve body limiting sleeve are sealed through a sealing gasket 11.
In the second embodiment, one end of the spring of the liquid inlet valve core 2 is pressed against the cavity wall of the liquid inlet cavity 20, the other end is pressed against the liquid inlet valve core 2, the spring is called as a liquid inlet spring 1 in the second embodiment, one end of the spring of the liquid outlet valve core 6 is pressed against the cavity wall of the liquid outlet cavity 21, the other end is pressed against the liquid outlet valve core 6, the spring is called as a liquid outlet spring 5 in the second embodiment, end discs 14 are respectively arranged on the liquid inlet valve core 2 and the liquid outlet valve core 6, the radial dimension of the end discs 14 is matched with the inner diameters of the corresponding liquid inlet cavity 20 and the liquid outlet cavity 21, and the end discs 14 can move along the inner walls of the liquid inlet cavity 20 and the liquid outlet cavity 21 in a guiding manner. In the second embodiment, the end disk 14 is provided with a necking step, one ends of the liquid inlet spring 1 and the liquid outlet spring 5 are respectively sleeved on the necking step 16 of the end disk 14, the other ends are respectively propped against the cavity wall of the liquid inlet cavity 20 and the cavity wall of the liquid outlet cavity 21, the end disk 14 is provided with the overflow hole 13, liquid is fed and discharged through the overflow hole 13, the springs extrude the cavity wall of the liquid inlet cavity 20 and the cavity wall of the liquid outlet cavity 21, the contact area of the springs and the cavity wall is large, the stress is uniform, the springs are not easy to break, the structure is simple, the installation is convenient, the reliability is good, and the service life is long.
In the second embodiment, the liquid inlet check valve and the liquid discharge check valve further comprise a liquid inlet sealing nipple 3 and a liquid discharge sealing nipple 7 which are in sealing fit with the liquid inlet valve core 2 and the liquid discharge valve core 6, the liquid inlet cavity 4 and the liquid discharge cavity 8 are arranged on the valve body, the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 are respectively screwed in the liquid inlet cavity 4 and the liquid discharge cavity 8 through threads, namely the liquid inlet sealing nipple 3 is connected with the internal threads 19 of the liquid inlet cavity 4 through external threads, the liquid discharge sealing nipple 7 is connected with the internal threads 19 of the liquid discharge cavity 8 through external threads, the pump valve is used as a wearing part, and when the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 are corroded or stabbed with the sealing surface of the valve body, the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 can be directly detached from the valve body, so that regular maintenance and assembly are convenient.
In the second embodiment, the liquid inlet valve core 2 and the liquid outlet valve core 6 are provided with guide structures which can be matched with the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7, the guide structures are guide frames 15 with multiple support legs uniformly distributed along the axes of the liquid inlet valve core 2 and the liquid outlet valve core 6, the guide frames 15 of the liquid inlet valve core and the guide frames 15 of the liquid outlet valve core can respectively extend into the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7, the guide frames 15 of the liquid inlet valve core and the guide frames 15 of the liquid outlet valve core enable the liquid inlet valve core 2 and the liquid outlet valve core 6 to respectively move along the inner wall axes of the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 relative to the valve body, the valve core is prevented from deviating from the sealing nipple when a pump valve works, and the support frames are convenient for guiding media through the valve core at multiple positions when the support frames pass through, so that the guide efficiency is high, the working reliability of the liquid inlet valve core 2 and the liquid outlet valve core 6 is improved, the sealing quality of the liquid inlet valve core 2 and the liquid outlet valve core 6 and the valve body is improved, and the working efficiency of the pump valve is improved.
In the second embodiment, through holes of the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 are respectively in conical surface fit sealing connection with the liquid inlet valve core 2 and the liquid discharge valve core 6, large particles can be extruded or cut off at the contact part of the liquid inlet sealing nipple 3 and the liquid discharge sealing nipple 7 with the conical surfaces of the liquid inlet valve core 2 and the liquid discharge valve core 6, and the pump valve can not work due to the blocking of the particles in the pump valve, so that the pump valve can be suitable for liquid containing impurity particles. The conical surfaces of the liquid inlet valve core 2 and the liquid outlet valve core 6 are provided with annular grooves for placing elastic sealing gaskets 12, the elastic sealing gaskets 12 are arranged between the contact parts of the liquid inlet valve core 2 and the liquid outlet valve core 6 and the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7, in the embodiment, the elastic sealing gaskets 12 are polyurethane gaskets, namely the polyurethane gaskets are placed in the annular grooves, and the impact force of the inner conical surfaces 17 of the liquid inlet valve core 2 and the liquid outlet valve core 6 to the outer conical surfaces 18 of the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 is reduced.
In the second embodiment, the valve body is provided with the liquid inlet channel 9 and the liquid outlet channel 10, the liquid inlet channel 9 is a channel which is vertically led into the liquid inlet cavity 4, the liquid outlet channel 10 is a channel which is inclined by 30-40 degrees relative to the central axis of the liquid outlet cavity 8 and is led into the liquid outlet cavity 8, the wall thickness between the liquid inlet channel 9 and the liquid outlet channel 10 is increased, the strength of the valve body is increased, and the liquid inlet channel 9 and the liquid outlet channel 10 are at least uniformly arranged two, so that the liquid inlet efficiency and the liquid outlet efficiency are improved.
When the water injection pump feeds liquid, the plunger of the water injection pump pumps, the liquid discharge valve core 6 is attached to the conical surface of the liquid discharge sealing nipple 7 to close the liquid discharge channel 10 under the multiple actions of pumping negative pressure, liquid discharge spring 5 and hydraulic pressure in the liquid discharge cavity 21, meanwhile, the liquid inlet valve core 2 compresses the conical surface attached to the liquid discharge sealing nipple 7 to separate under the action of pumping negative pressure, the liquid inlet channel 9 is opened, and liquid enters the liquid inlet cavity 20 through the box body positioning sleeve to realize liquid inlet.
When the water injection pump discharges liquid, the plunger of the water injection pump pushes and presses, the liquid inlet valve core 2 is closed with the conical surface of the liquid inlet sealing nipple 3 under the hydraulic action in the liquid inlet spring 1 and the liquid inlet cavity 20, meanwhile, the liquid discharge valve core 6 is separated from the conical surface of the liquid discharge sealing nipple 7 under the hydraulic action of the liquid discharge cavity 8, the liquid discharge channel 10 is opened, and liquid enters the liquid discharge cavity 21 through the valve body limiting sleeve, so that liquid discharge is realized.
When the hydraulic fluid inlet valve is used, the liquid inlet spring 1 and the liquid outlet spring 5 are respectively propped against the cavity wall of the liquid inlet cavity 20 and the cavity wall of the liquid outlet cavity 21, the liquid inlet valve core 2 and the liquid outlet valve core 6 are subjected to hydraulic action to compress the corresponding springs, the springs squeeze the cavity wall of the liquid inlet cavity 20 and the cavity wall of the liquid outlet cavity 21, the contact area of the springs and the cavity wall is large, the stress is uniform, the springs are not easy to break, few parts are used, the liquid inlet valve core 2 and the liquid outlet valve core 6 are respectively matched with conical surfaces of the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 in a sealing way, large particles are extruded or cut off at the contact positions of the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 with the conical surfaces of the liquid inlet valve core 2 and the liquid outlet valve core 6, the pump valve is suitable for liquid containing impurity particles, the liquid inlet sealing nipple 3 is connected with the inner threads of the liquid inlet cavity 4 through the outer threads, the liquid outlet sealing nipple 7 is connected with the inner threads of the cavity 8 through the outer threads 19 through the outer threads, if the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 corrodes or the valve body 7 is corroded, the liquid inlet sealing nipple 3 and the liquid outlet sealing nipple 7 can be directly detached from the valve body or the valve body is high in service life, and the hydraulic fluid inlet sealing nipple is convenient to be assembled, and the valve body is convenient to be conveniently assembled, and the service life is long.
Of course, the pump valve of the present utility model is not limited to only the first and second embodiments described above. Several other embodiments of pump valves based on the design concept of the present utility model are listed below.
For example, in other embodiments, unlike the above embodiment, the contact position of the liquid inlet valve core and the liquid inlet spring is in plane contact fit, the liquid outlet valve core and the liquid outlet spring are in plane contact fit, one end of the liquid inlet spring is propped against the cavity wall of the liquid inlet cavity, the other end of the liquid outlet spring is propped against the plane of the liquid inlet valve core, one end of the liquid outlet spring is propped against the cavity wall of the liquid outlet cavity, the other end of the liquid outlet spring is propped against the plane of the liquid outlet valve core, and the radial sizes of the liquid inlet valve core and the liquid outlet valve core are matched with the inner diameters of the corresponding liquid inlet cavity and the liquid outlet cavity.
For example, in another embodiment, unlike the above embodiment, the liquid inlet valve core is provided with a necking section, the liquid inlet spring is a reducing spring with a large diameter at one end and a small diameter at one end, the large diameter end of the liquid inlet spring is pressed against the wall of the liquid inlet cavity, the small diameter end is sleeved on the corresponding liquid inlet valve core, the liquid outlet valve core is respectively provided with an end disc, the radial dimension of the end disc is matched with the inner diameter of the liquid outlet cavity, the end disc is provided with a necking step liquid outlet spring, the top of the end disc is sleeved on the necking step, and the end disc is provided with an overflow hole.
For example, in another embodiment, unlike the above embodiment, the liquid inlet valve core and the liquid outlet valve core are respectively provided with end plates, the radial dimensions of the end plates of the liquid inlet valve core and the end plates of the liquid inlet valve core are respectively matched with the inner diameters of the liquid inlet cavity and the liquid outlet cavity, and the end plates of the liquid inlet valve core and the end plates of the liquid outlet valve core are respectively matched with the liquid inlet cavity and the liquid outlet cavity in a guiding manner, so that the liquid inlet valve core and the liquid inlet valve core can move along the axes of the liquid inlet cavity and the liquid outlet cavity, and no other guiding structures are arranged between the liquid inlet valve core and the liquid outlet valve core and the liquid inlet sealing nipple and the liquid outlet sealing nipple.
For example, in another embodiment, unlike the above embodiment, the liquid inlet valve core and the liquid outlet valve core are provided with guide cylinder structures matched with the guide between the liquid inlet sealing nipple and the liquid outlet sealing nipple, the outer diameter of the guide cylinder is consistent with the inner diameter of the sealing nipple, the guide cylinder can extend into the sealing nipple, and the guide cylinder enables the liquid inlet valve core and the liquid outlet valve core to be matched with the liquid inlet sealing nipple and the liquid outlet sealing nipple quickly and efficiently, so that the valve core is prevented from deviating from the sealing nipple when the pump valve works.
For example, in another embodiment, unlike the above embodiment, the inner conical walls of the liquid inlet sealing nipple and the liquid outlet sealing nipple are provided with grooves for placing elastic sealing gaskets, and the contact parts between the liquid inlet valve core and the liquid outlet valve core and the liquid inlet sealing nipple and the liquid outlet sealing nipple are in sealing fit.
For example, in another embodiment, unlike the above embodiment, two liquid inlet channels and two liquid outlet channels are uniformly arranged on the valve body along the shaft, respectively, the liquid inlet channels are communicated with the liquid inlet cavity so that liquid can enter the liquid inlet cavity, and the liquid outlet channels are communicated with the liquid inlet cavity and the liquid outlet cavity.
For another embodiment, unlike the above embodiment, the liquid inlet valve core and the liquid outlet valve core are respectively and directly matched with the liquid inlet cavity and the liquid outlet cavity in a sealing way, no liquid inlet sealing nipple and no liquid outlet sealing nipple are arranged between the liquid inlet valve core and the liquid outlet valve core and between the liquid inlet cavity and the liquid outlet cavity, the diameter size of the liquid inlet valve core and the liquid outlet valve core is consistent with the inner diameter size of the liquid inlet cavity and the liquid outlet cavity, and the liquid inlet valve core and the liquid outlet valve core are respectively matched with the cylindrical surfaces of the liquid inlet cavity and the liquid outlet cavity in a sealing way
For example, in other embodiments, unlike the above embodiment, the liquid inlet valve core and the liquid outlet valve core are in direct conical surface sealing fit with the liquid inlet sealing nipple and the liquid outlet sealing nipple, and an elastic sealing gasket is not arranged between the liquid inlet valve core and the liquid outlet valve core and the liquid inlet sealing nipple and the liquid outlet sealing nipple.
For example, in other embodiments, unlike the above embodiment, the liquid inlet valve core and the liquid outlet valve core are directly cylindrical matched with the liquid inlet sealing nipple and the liquid outlet sealing nipple to realize sealing, that is, the outer peripheral surfaces of the liquid inlet valve core and the liquid outlet valve core are cylindrical surfaces, and the inner wall surfaces of the liquid inlet sealing nipple and the liquid outlet sealing nipple are in cylindrical surface sealing matched with the liquid inlet valve core and the liquid outlet valve core.
The above description is only a preferred embodiment of the present utility model, and the patent protection scope of the present utility model is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The utility model provides a pump valve, includes the valve casing, and the valve casing includes valve body and letter body locating sleeve and the valve body stop collar of sealing connection on the valve body respectively, the butt joint position of valve body and letter body locating sleeve sets up the feed liquor check valve, the butt joint position of valve body and valve body stop collar sets up the flowing back check valve, have feed liquor chamber (20) and flowing back chamber (21) respectively in letter body locating sleeve and the valve body stop collar, characterized by, the one end roof pressure of the spring of the roof pressure feed liquor case (2) that the feed liquor check valve contained is on the chamber wall in feed liquor chamber (20), and the other end roof pressure is on feed liquor case (2), the one end roof pressure of the spring of the roof pressure flowing back case (6) that the flowing back check valve contained is on the chamber wall in flowing back chamber (21), and the other end roof pressure is on flowing back case (6).
2. The pump valve according to claim 1, wherein the liquid inlet valve core (2) and the liquid outlet valve core (6) are respectively provided with a necking section, the springs of the pressing liquid inlet valve core and the liquid outlet valve core are reducing springs with a large diameter at one end and a small diameter at one end, the large diameter end is pressed on the cavity wall of the corresponding liquid inlet cavity (20) or liquid outlet cavity (21), and the small diameter end is sleeved on the necking section of the corresponding liquid inlet valve core (2) or liquid outlet valve core (6).
3. Pump valve according to claim 1, characterized in that the liquid inlet valve core (2) and the liquid outlet valve core (6) are respectively provided with an end disc (14), the end disc (14) is provided with an overflow hole (13), the radial dimension of the end disc (14) is matched with the inner diameters of the corresponding liquid inlet cavity (20) and the liquid outlet cavity (21), the diameters of springs pressing the liquid inlet valve core and the liquid outlet valve core are consistent with the diameters of the end disc (14), and the ends of the springs pressing the liquid inlet valve core and the liquid outlet valve core are pressed on the end disc (14).
4. The pump valve according to claim 2 or 3, characterized in that a liquid inlet cavity (4) and a liquid discharge cavity (8) are arranged on the valve body, the liquid inlet cavity (4) is screwed with a liquid inlet sealing nipple (3), the liquid discharge cavity (8) is screwed with a liquid discharge sealing nipple (7), and the liquid inlet valve core (2) and the liquid discharge valve core (6) are respectively matched with ports of the liquid inlet sealing nipple (3) and the liquid discharge sealing nipple (7) in a sealing manner to realize the blocking of the check valve.
5. Pump valve according to claim 4, characterized in that the liquid inlet valve core (2) and the liquid outlet valve core (6) are provided with guiding structures which can be matched with the liquid inlet sealing nipple (3) and the liquid outlet sealing nipple (7), and the guiding structures are multi-support leg guiding frames (15) which are uniformly arranged along the axes of the liquid inlet valve core (2) and the liquid outlet valve core (6).
6. The pump valve according to claim 4, wherein the liquid inlet valve core (2) and the liquid outlet valve core (6) are in conical surface sealing fit with the liquid inlet sealing nipple (3) and the liquid outlet sealing nipple (7).
7. Pump valve according to claim 6, characterized in that an elastic sealing gasket (12) is arranged between the contact parts of the liquid inlet valve core (2) and the liquid outlet valve core (6) and the liquid inlet sealing nipple (3) and the liquid outlet sealing nipple (7).
8. A pump valve according to any one of claims 1 to 3, wherein the inlet check valve and the outlet check valve are of the same construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321781688.2U CN221144749U (en) | 2023-07-07 | 2023-07-07 | Pump valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321781688.2U CN221144749U (en) | 2023-07-07 | 2023-07-07 | Pump valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221144749U true CN221144749U (en) | 2024-06-14 |
Family
ID=91389210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321781688.2U Active CN221144749U (en) | 2023-07-07 | 2023-07-07 | Pump valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221144749U (en) |
-
2023
- 2023-07-07 CN CN202321781688.2U patent/CN221144749U/en active Active
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