CN215890427U - Non-return assembly of high-pressure plunger pump - Google Patents
Non-return assembly of high-pressure plunger pump Download PDFInfo
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- CN215890427U CN215890427U CN202121917983.7U CN202121917983U CN215890427U CN 215890427 U CN215890427 U CN 215890427U CN 202121917983 U CN202121917983 U CN 202121917983U CN 215890427 U CN215890427 U CN 215890427U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 99
- 238000003825 pressing Methods 0.000 claims abstract description 51
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 32
- 238000009826 distribution Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Abstract
The utility model provides a check assembly of a high-pressure plunger pump, and belongs to the technical field of machinery. It has solved the current unstable problem of check valve work. The plunger pump comprises a box body provided with water passing holes and water passing cavities, wherein the number of the water passing cavities is at least two, the water passing cavities are communicated with the water passing holes through vertically arranged water guide holes, a plurality of water guide holes are distributed along the axial direction of the water passing holes, a non-return assembly comprises an annular valve seat arranged in the lower end of each water guide hole and a valve cover arranged in the upper end of each water guide hole, a one-way mechanism for enabling the water guide holes to be in one-way communication with the inner cavity of the annular valve seat is arranged between the valve cover and the annular valve seat, a pressing plate is horizontally fixed on the top wall of the box body, and the pressing plate simultaneously shields all the water guide holes; the upper end of each valve cover is tightly pressed on the pressing plate, the bottom wall of each valve cover extends downwards to form a pressing sheet in an integrated mode, at least two pressing sheets are arranged on the same valve cover and are uniformly distributed at intervals along the circumferential direction of the valve cover, and the annular valve seats are clamped and positioned between the inner wall of the water guide hole and the pressing sheets. This high pressure plunger pump non return assembly job stabilization.
Description
Technical Field
The utility model belongs to the technical field of machinery, relates to a high-pressure plunger pump, and particularly relates to a check assembly of the high-pressure plunger pump.
Background
The plunger pump is an important device of the hydraulic system. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity so as to absorb and press oil.
The existing plunger pump, such as a high-pressure plunger pump (application number: 2019211805835) disclosed in the chinese patent library, comprises a crankcase, a pump head and a crankshaft disposed in the crankcase in a rotating fit, three plungers in transmission connection are arranged on the crankshaft in a row, a sliding cavity for the plungers to reciprocate is arranged in the crankcase, the periphery of one end of the plunger piston, which is close to the pump head, is provided with a ring groove which forms a gap with the inner wall of the sliding cavity, a working cavity corresponding to the sliding cavity is arranged in the pump head, a ceramic tube matched with the working chamber is fixed at the end part of the plunger, a sealing component is sleeved on the periphery of the ceramic tube and is blocked at one end of the working chamber, the bottom of the working cavity is provided with a water inlet pipeline and a water outlet pipeline which extend towards two sides vertically, and the water inlet pipeline and the water outlet pipeline are respectively provided with a water inlet check valve and a water outlet check valve which are pressed by a sealing cover.
The check valve generally comprises a valve seat, a spring, a sealing element for sealing the valve seat and a valve cover for supporting the spring, wherein the outer end of the valve cover extends out of the crankcase, and the valve cover is in threaded connection with the crankcase, so that the valve cover has certain probability of being loosened due to external influence, and the work of the check valve is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art and provides a check assembly of a high-pressure plunger pump, which works stably.
The purpose of the utility model can be realized by the following technical scheme: the plunger pump comprises a box body with a water passing hole and a water passing cavity, the water passing cavity is positioned on one side of the water passing hole, the number of the water passing cavity is at least two, the water passing cavity is communicated with the water passing hole through a vertically arranged water guide hole, the water guide hole is a through hole, the upper end of the water guide hole extends to the top wall of the box body, a plurality of water guide holes are distributed along the axial direction of the water passing hole, the non-return assembly comprises an annular valve seat arranged in the lower end of each water guide hole and a valve cover arranged in the upper end of each water guide hole, the outer walls of the valve cover and the annular valve seat are sealed with the inner wall of the water guide hole, and a one-way mechanism for enabling the water guide hole to be in one-way conduction with the inner cavity of the annular valve seat is arranged between the valve cover and the annular valve seat; the upper end of each valve cover is tightly pressed on the pressing plate, the bottom wall of each valve cover extends downwards to form a pressing sheet in an integrated mode, at least two pressing sheets are arranged on the same valve cover and are uniformly distributed at intervals along the circumferential direction of the valve cover, and the annular valve seats are clamped and positioned between the inner wall of the water guide hole and the pressing sheets.
The check assembly is located in the water guide hole, and the pressing plate simultaneously shields all the water guide holes, so that the check assembly can be prevented from being interfered by the outside, and the working stability of the check assembly is effectively ensured.
The annular valve seat is clamped and positioned between the inner wall of the water guide hole and the valve cover, and the valve cover is clamped and positioned between the annular valve seat and the pressing plate, so that the positioning of the valve cover and the annular valve seat is synchronously performed, the mounting steps are reduced, and the assembly is convenient; secondly, the pressing plate is pressed tightly on the valve covers at the same time, so that the three valve covers are synchronously positioned, and the assembly is further convenient.
In the non-return assembly of the high-pressure plunger pump, the pressure plate bottom wall is attached to the box body top wall, the pressure plate bottom wall is provided with a strip-shaped cavity, the length of the strip-shaped cavity extends along the distribution direction of the plurality of water guide holes, the upper end of the annular valve seat extends out of the water guide holes and is located in the strip-shaped cavity, and the annular valve seat top wall is pressed on the strip-shaped cavity bottom wall. By adopting the design, the valve cover can be completely hidden, and the working stability of the check assembly is further improved.
In foretell high-pressure plunger pump non return assembly, seted up the bar groove on the valve gap roof, bar groove length radially extends along the valve gap, and the equal opening in bar groove both ends, and the shaping has the stopper that matches with the bar groove on the clamp plate, and stopper and bar groove quantity are the same, and the stopper is pegged graft at corresponding bar inslot. The limiting blocks are matched with the strip-shaped grooves, the valve cover is limited to rotate in the circumferential direction, and the positioning stability of the valve cover is improved, so that the working stability of the check assembly is enhanced.
In the check assembly of the high-pressure plunger pump, the pressing plate and the box body are detachably and fixedly connected through the bolt, so that after the pressing plate is dismounted, the valve cover, the annular valve seat and the one-way mechanism are all in a free state, all parts can be easily taken out, and the check assembly is convenient to maintain.
In foretell high pressure plunger pump non return assembly, preforming and annular disk seat can dismantle through connection structure and link firmly, make preforming and annular disk seat form a whole, further make things convenient for non return assembly dismouting.
In foretell high pressure plunger pump non return assembly, annular valve gap possesses elasticity, and connection structure is including seting up the ring channel on the annular disk seat lateral wall, and ring channel and annular disk seat are coaxial, and all correspond the shaping on every pressure plate and have the lug that matches with the ring channel, and the lug joint is in the ring channel. The annular valve cover has elasticity, so that the convex block can be clamped into the annular groove or pulled out of the annular groove by force, and the operation is convenient and easy.
In the non-return assembly of the high-pressure plunger pump, the cross section of the pressing sheet is arc-shaped, and the pressing sheet is coaxial with the corresponding valve cover, so that the contact area of the pressing sheet and the annular valve seat is enlarged, and the positioning stability of the annular valve seat is improved.
In the non-return assembly of the high-pressure plunger pump, the cross sections of the annular groove and the convex block are in the shape of circular arcs matched with each other.
As another scheme, in the check assembly of the high-pressure plunger pump, the connecting structure comprises an annular positioning groove which is formed in the annular valve seat and matched with the pressing sheet, and the lower end of the pressing sheet is clamped in the annular positioning groove.
In the check assembly of the high-pressure plunger pump, the check mechanism comprises a sealing element and a spring, the upper end of the sealing element is connected with the valve cover in a sliding mode so that the sealing element can slide along the axial direction of the valve cover, the spring enables the sealing element to have a downward moving trend, and the sealing element is pressed on the annular valve seat to close the upper port of the annular valve seat when moving downwards. By adopting the design, the device has the advantages of simple structure and convenience in installation. The valve gap both is used for the sliding connection sealing member, is used for fixing a position annular disk seat again, and in this application, the valve gap possesses a dual-purpose effect of thing promptly, when simplifying the structure, the further equipment of being convenient for.
In foretell high pressure plunger pump non return assembly, the sealing member includes sealed the pad and roughly is the support body of "T" shape, is equipped with the guide hole that supplies support body pole portion slip male on the valve gap, and the guide hole is the blind hole and is vertical setting, and sealed the pad is fixed on the support body head, and under the spring action, sealed pad can press on annular valve seat in order to seal annular valve seat upper port. By adopting the design, the device has the advantages of simple structure and convenience in installation.
Compared with the prior art, this high pressure plunger pump non return assembly has following advantage:
1. the check assembly is located in the water guide hole, and the pressing plate simultaneously shields all the water guide holes, so that the check assembly can be prevented from being interfered by the outside, and the working stability of the check assembly is effectively ensured.
2. The annular valve seat is clamped and positioned between the inner wall of the water guide hole and the valve cover, and the valve cover is clamped and positioned between the annular valve seat and the pressing plate, so that the positioning of the valve cover and the annular valve seat is synchronously performed, the mounting steps are reduced, and the assembly is convenient; secondly, the pressing plate is pressed tightly on the valve covers at the same time, so that the three valve covers are synchronously positioned, and the assembly is further convenient.
3. The valve gap both is used for the sliding connection sealing member, is used for fixing a position annular disk seat again, and in this application, the valve gap possesses a dual-purpose effect of thing promptly, when simplifying the structure, the further equipment of being convenient for.
Drawings
Fig. 1 is a schematic perspective view of a high-pressure plunger pump.
FIG. 2 is a cross-sectional structural schematic of the present check assembly.
Fig. 3 is an enlarged schematic view of a structure at a in fig. 2.
Fig. 4 is a structural schematic view of the valve cover.
FIG. 5 is a cross-sectional view of the check assembly in another orientation.
In the figure, 1, a box body; 1a, water through holes; 1b, a water passing cavity; 1c, a water guide hole; 2. an annular valve seat; 2a, a first conical surface; 3. a seal ring; 4. a valve cover; 4a, tabletting; 4b, a bump; 4c, a strip-shaped groove; 4d, a guide hole; 5. pressing a plate; 5a, a limiting block; 5b, a strip-shaped cavity; 6. a bolt; 7. a spring; 8. a seal member; 8a, a sealing gasket; 8a1 and a second conical surface; 8b, a frame body.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 2 and 5, in the non-return assembly of the high-pressure plunger pump, the plunger pump includes a box body 1 having a water passing hole 1a and a water passing cavity 1b, the water passing cavity 1b is located on one side of the water passing hole 1a, and the water passing cavity 1b is communicated with the water passing hole 1a through a vertically arranged water guide hole 1 c.
Wherein,
the water guide hole 1c is a through hole and the upper end extends to the top wall of the box body 1. The number of the water passing cavities 1b is at least two, each water passing cavity 1b is communicated with the water passing hole 1a through the water guide hole 1c, and the water guide holes 1c are axially distributed along the water passing hole 1 a. In an actual product, the number of the water guide holes 1c is 3.
The non-return assembly comprises an annular valve seat 2 arranged in the lower end of each water guide hole 1c and a valve cover 4 arranged in the upper end of each water guide hole 1c, the annular valve seat 2, the valve cover 4 and the water guide holes 1c are coaxially arranged, the outer walls of the valve cover 4 and the annular valve seat 2 and the inner wall of each water guide hole 1c form sealing, the water through hole 1a is communicated with the water guide holes 1c through the inner cavity of the annular valve seat 2, a one-way mechanism for conducting the water guide holes 1c and the inner cavity of the annular valve seat 2 in one way is arranged between the valve cover 4 and the annular valve seat 2, and the conduction direction of the one-way mechanism is the same as the flowing direction of fluid from the inner cavity of the annular valve seat 2 to the water guide holes 1 c.
In particular, the present invention relates to a method for producing,
the outer wall of the valve cover 4 and the outer wall of the annular valve seat 2 are sealed through the sealing ring 3 and the water guide hole 1 c.
As shown in fig. 2 and 3, the one-way mechanism comprises a sealing member 8 and a spring 7, wherein the upper end of the sealing member 8 is slidably connected with the valve cover 4 so that the sealing member 8 can slide back and forth along the axial direction of the valve cover 4, the spring 7 makes the sealing member 8 have a downward moving trend, and the sealing member 8 presses on the annular valve seat 2 to close the port on the annular valve seat 2 when moving downwards. In this embodiment, the sealing member 8 includes that sealed 8a fills up and the support body 8b that roughly is "T" shape, is equipped with on the valve gap 4 and supplies support body 8b pole portion slip male guide hole 4d, and guide hole 4d is the blind hole and is vertical setting, and sealed 8a of packing is fixed on support body 8b head, and under the effect of spring 7, sealed 8a of packing can press on annular valve seat 2 in order to seal annular valve seat 2 upper port. Further, the inner wall of the annular valve seat 2 at the upper port is a tapered surface one 2a with a diameter gradually decreasing downwards, a tapered surface two 8a1 matched with the tapered surface one 2a is arranged on the side wall of the sealing gasket 8a, and the tapered surface two 8a1 can be tightly pressed on the tapered surface one 2a to form a seal, so that the effect of the sealing gasket 8a on closing the upper port of the annular valve seat 2 is enhanced.
As shown in fig. 1 and 2, a pressing plate 5 is horizontally fixed on the top wall of the box body 1, and the pressing plate 5 simultaneously covers all the water guide holes 1c, at this time, the upper end of each valve cover 4 is tightly pressed on the pressing plate 5, the bottom wall of each valve cover 4 extends downwards to form a pressing sheet 4a in an integrated manner, at least two pressing sheets 4a on the same valve cover 4 are uniformly distributed along the circumferential direction of the valve cover 4 at intervals, and the annular valve seat 2 is clamped and positioned between the inner wall of the water guide hole 1c and the pressing sheets 4 a. The annular valve seat 2 is clamped and positioned between the inner wall of the water guide hole 1c and the valve cover 4, and the valve cover 4 is clamped and positioned between the annular valve seat 2 and the pressing plate 5, so that the positioning of the valve cover 4 and the annular valve seat 2 is synchronously performed, the mounting steps are reduced, and the assembly is convenient; secondly, the pressing plate 5 is pressed tightly on the valve covers 4 at the same time, so that the three valve covers 4 are synchronously positioned, and the assembly is further convenient.
For a further explanation,
the pressing plate 5 and the box body 1 are detachably fixedly connected through the bolt 6, so that after the pressing plate 5 is dismounted, the valve cover 4, the annular valve seat 2 and the one-way mechanism are all in a free state, all parts can be easily taken out, and the maintenance is convenient.
As shown in fig. 4 and 5, a strip-shaped groove 4c has been seted up on the top wall of valve cover 4, and strip-shaped groove 4c length radially extends along valve cover 4, and the equal opening in strip-shaped groove 4c both ends, and the shaping has stopper 5a that matches with strip-shaped groove 4c on clamp plate 5, and stopper 5a quantity is the same with strip-shaped groove 4c, and stopper 5a pegs graft in strip-shaped groove 4 c. Stopper 5a and strip groove 4c cooperation restrict valve gap 4 in circumference and rotate, improve valve gap 4 positional stability to strengthen non return assembly job stabilization nature.
As shown in fig. 5, the bottom wall of the pressing plate 5 is attached to the top wall of the box body 1, the bottom wall of the pressing plate 5 is provided with a strip-shaped cavity 5b, the length of the strip-shaped cavity 5b extends along the distribution direction of the plurality of water guide holes 1c, the upper end of the annular valve seat 2 extends out of the water guide holes 1c and is located in the strip-shaped cavity 5b, and the top wall of the annular valve seat 2 is pressed on the bottom wall of the strip-shaped cavity 5b to completely hide the valve cover 4, so that the working stability of the check assembly is further improved.
The cross section of the pressing piece 4a is arc-shaped, and the pressing piece 4a is coaxial with the corresponding valve cover 4; the inner wall of the water guide hole 1c is provided with a supporting surface which is used for contacting the bottom wall of the annular valve seat 2, and the supporting surface is annular and coaxial with the water guide hole 1c so as to enhance the positioning stability of the annular valve seat 2.
Furthermore, the pressing sheet 4a and the annular valve seat 2 are detachably and fixedly connected through a connecting structure, so that the pressing sheet 4a and the annular valve seat 2 are formed into a whole, and the non-return assembly is further convenient to disassemble and assemble.
In the present embodiment, it is preferred that,
as shown in fig. 3, the annular valve cover 4 has elasticity, and the annular valve cover 4 may be made of plastic or stainless steel. The connecting structure comprises an annular groove formed in the outer side wall of the annular valve seat 2, the annular groove and the annular valve seat 2 are coaxial, a convex block 4b matched with the annular groove is correspondingly formed on each pressing sheet 4a, and the convex block 4b is clamped in the annular groove. The annular valve cover 4 has elasticity, so that the lug 4b can be clamped into the annular groove or pulled out of the annular groove by force, and the operation is convenient and easy. The cross-sections of the annular groove and the projection 4b are preferably circular arcs matching each other.
Example two
The structure and principle of the second embodiment are basically the same as those of the first embodiment, and different points are as follows: the connecting structure comprises an annular positioning groove which is arranged on the annular valve seat 2 and is matched with the pressing sheet 4a, and the lower end of the pressing sheet 4a is clamped in the annular positioning groove.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (10)
1. The plunger pump comprises a box body (1) with a water passing hole (1a) and a water passing cavity (1b), the water passing cavity (1b) is positioned on one side of the water passing hole (1a), at least two water passing cavities (1b) are arranged, the water passing cavity (1b) is communicated with the water passing hole (1a) through a vertically arranged water guide hole (1c), the water guide hole (1c) is a through hole, the upper end of the water guide hole extends to the top wall of the box body (1), a plurality of water guide holes (1c) are axially distributed along the water passing hole (1a), the check assembly comprises an annular valve seat (2) arranged in the lower end of each water guide hole (1c) and a valve cover (4) arranged in the upper end of each water guide hole (1c), a seal is formed between the outer walls of the valve cover (4) and the annular valve seat (2) and the inner wall of the water guide hole (1c), and a one-way connection mechanism for enabling the water guide hole (1c) and the inner cavity of the annular valve seat (2) to be in one-way is arranged between the valve cover (4) and the annular valve seat (2), the water distributor is characterized in that a pressing plate (5) is horizontally fixed on the top wall of the box body (1), and the pressing plate (5) simultaneously shields all water guide holes (1 c); the upper end of each valve cover (4) is tightly pressed on the pressing plate (5), the bottom wall of each valve cover (4) extends downwards to form pressing plates (4a) in an integrated mode, at least two pressing plates (4a) on the same valve cover (4) are uniformly distributed at intervals along the circumferential direction of the valve cover (4), and the annular valve seat (2) is clamped and positioned between the inner wall of the water guide hole (1c) and the pressing plates (4 a).
2. The non-return assembly of the high-pressure plunger pump according to claim 1, wherein the bottom wall of the pressure plate (5) is attached to the top wall of the box body (1), a strip-shaped cavity (5b) is formed in the bottom wall of the pressure plate (5), the length of the strip-shaped cavity (5b) extends along the distribution direction of the plurality of water guide holes (1c), the upper end of the annular valve seat (2) extends out of the water guide holes (1c) and is located in the strip-shaped cavity (5b), and the top wall of the annular valve seat (2) is pressed on the bottom wall of the strip-shaped cavity (5 b).
3. The non-return assembly of the high-pressure plunger pump according to claim 2, wherein a strip-shaped groove (4c) is formed in the top wall of the valve cover (4), the length of the strip-shaped groove (4c) extends along the radial direction of the valve cover (4), both ends of the strip-shaped groove (4c) are open, a limiting block (5a) matched with the strip-shaped groove (4c) is formed on the pressing plate (5), the number of the limiting blocks (5a) is the same as that of the strip-shaped groove (4c), and the limiting blocks (5a) are inserted into the corresponding strip-shaped grooves (4 c).
4. The check assembly of the high-pressure plunger pump according to claim 1, 2 or 3, wherein the pressure plate (5) and the box body (1) are detachably and fixedly connected through bolts (6).
5. The check assembly of the high-pressure plunger pump according to claim 1, wherein the pressure plate (4a) and the annular valve seat (2) are detachably and fixedly connected through a connecting structure.
6. The check assembly of the high-pressure plunger pump as claimed in claim 5, wherein the annular valve cover (4) is elastic, the connecting structure comprises an annular groove formed on the outer side wall of the annular valve seat (2), the annular groove is coaxial with the annular valve seat (2), a protrusion (4b) matched with the annular groove is correspondingly formed on each pressing sheet (4a), and the protrusion (4b) is clamped in the annular groove.
7. The non-return assembly of a high-pressure plunger pump according to claim 6, characterized in that the cross section of the pressure plate (4a) is circular arc-shaped, and the pressure plate (4a) and the corresponding valve cover (4) are coaxial.
8. The non-return assembly of a high-pressure plunger pump according to claim 6, characterized in that the cross-sections of the annular groove and the projection (4b) are in the shape of circular arcs matching each other.
9. The non-return assembly of the high-pressure plunger pump is characterized in that the non-return mechanism comprises a sealing element (8) and a spring (7), the upper end of the sealing element (8) is connected with the valve cover (4) in a sliding mode so that the sealing element (8) can slide axially along the valve cover (4), the spring (7) enables the sealing element (8) to have a downward moving trend, and the sealing element (8) presses on the annular valve seat (2) to close an upper port of the annular valve seat (2) when moving downwards.
10. The non-return assembly of the high-pressure plunger pump according to claim 1, wherein the sealing element (8) comprises a sealing gasket (8a) and a frame body (8b) which is approximately in an inverted T shape, a guide hole (4d) for the rod part of the frame body (8b) to be inserted in a sliding manner is formed in the valve cover (4), the guide hole (4d) is a blind hole and is vertically arranged, the sealing gasket (8a) is fixed on the head part of the frame body (8b), and the sealing gasket (8a) can be pressed on the annular valve seat (2) under the action of the spring (7) to seal the upper port of the annular valve seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121917983.7U CN215890427U (en) | 2021-08-16 | 2021-08-16 | Non-return assembly of high-pressure plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121917983.7U CN215890427U (en) | 2021-08-16 | 2021-08-16 | Non-return assembly of high-pressure plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215890427U true CN215890427U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121917983.7U Active CN215890427U (en) | 2021-08-16 | 2021-08-16 | Non-return assembly of high-pressure plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215890427U (en) |
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2021
- 2021-08-16 CN CN202121917983.7U patent/CN215890427U/en active Active
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