CN220302328U - Cylinder body for variable plunger pump - Google Patents
Cylinder body for variable plunger pump Download PDFInfo
- Publication number
- CN220302328U CN220302328U CN202321455296.7U CN202321455296U CN220302328U CN 220302328 U CN220302328 U CN 220302328U CN 202321455296 U CN202321455296 U CN 202321455296U CN 220302328 U CN220302328 U CN 220302328U
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- Prior art keywords
- sealing
- plunger pump
- shell
- end cover
- ring
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- 238000007789 sealing Methods 0.000 claims abstract description 67
- 238000001125 extrusion Methods 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model belongs to the technical field of variable plunger pump cylinders, in particular to a cylinder for a variable plunger pump, which comprises a shell and an end cover of the variable plunger pump, wherein a thread groove is formed at a port of the shell, the end cover is arranged at the thread groove in a threaded manner, a sealing and fixing assembly is arranged in the thread groove, the sealing and fixing assembly comprises a first sealing ring, and the first sealing ring is arranged in the thread groove; according to the utility model, the connection part is sealed by the pair of sealing rings, the pushing ring can push the first sealing ring out of the threaded groove by the tension of the tension spring, so that the replacement is convenient, the clamping column is tightly inserted into the interior of the insertion port by the elastic force of the spring, the end cover is prevented from loosening by vibration generated when the variable plunger pump works, and the use is convenient.
Description
Technical Field
The utility model relates to the technical field of variable plunger pump cylinders, in particular to a cylinder for a variable plunger pump.
Background
The pressure oil of the variable plunger pump enters the lower cavity of the variable housing through the one-way valve through the oil through holes in the pump body and the variable housing of the pump housing, when the pull rod moves downwards, the servo piston is pushed to move downwards, the upper valve port of the servo valve is opened, the pressure oil of the lower cavity of the variable housing enters the upper cavity of the variable housing through the oil through holes in the variable piston, because the area of the upper cavity is larger than that of the lower cavity, the hydraulic pressure pushes the piston to move downwards, the pin shaft is driven to enable the variable head to rotate around the center of the steel ball, the inclination angle of the variable head is changed, and the flow of the plunger pump is increased accordingly. Conversely, the pull rod moves upwards, the inclination angle of the variable head changes in the opposite direction, and the flow of the pump also changes. When the inclination angle is changed to zero, the variable head changes to the negative deflection angle direction, the liquid flow is reversed, the oil inlet and outlet of the pump are changed, the existing variable plunger pump mostly consists of a plunger pump core and a cylinder body, the plunger pump core is arranged in the cylinder body, then the shell of the cylinder body and the end cover are fixedly welded in a welding mode, the variable plunger pump in the mode is inconvenient to maintain, and a part of the cylinder body of the variable plunger pump is fixedly connected with the shell and the end cover through fixing bolts in the market, but the sealing effect is not ideal.
The prior Chinese patent with publication number of CN212508781U discloses a cylinder body assembly structure for a variable plunger pump, which comprises a shell and an end cover, wherein two groups of first sleeves are respectively embedded and fixed above the side wall of the shell, two groups of connecting pipes used for communicating the water inlet end and the water outlet end of a plunger pump core are respectively arranged in the first sleeves, a clamping groove used for clamping and fixing the plunger pump core is formed in one side of the inner wall of the shell, an annular sealing gasket is fixedly adhered to one side of the shell, the end cover is fixedly installed on one side of the shell through a fixing bolt, a sealing strip is fixedly adhered to one side of the end cover, a slot corresponding to the sealing strip is formed in one side of the shell, and the sealing strip is positioned in the slot. According to the utility model, the annular sealing gasket is fixedly adhered to the inner wall of the shell, the sealing strip is fixedly adhered to one side of the end cover, and the sealing strip is clamped in the clamping groove at one side of the shell to perform multiple sealing, so that the tightness of the cylinder body assembly structure is ensured.
With respect to the above and related art, the inventors believe that there are often the following drawbacks: the annular sealing gasket of the device is adhered to the inside of the shell, but when the sealing performance of the annular sealing gasket is reduced after long-time use and the annular sealing gasket needs to be replaced, the annular sealing gasket is adhered to the deep part of the inner wall of the shell, so that the annular sealing gasket is inconvenient to detach and replace, the use effect is poor, and improvement is needed; therefore, a cylinder for a variable displacement pump is proposed in view of the above-described problems.
Disclosure of Invention
In order to overcome the defects in the prior art and solve the technical problems, the utility model provides a cylinder body for a variable displacement pump.
The technical scheme adopted for solving the technical problems is as follows: the utility model discloses a cylinder body for a variable plunger pump, which comprises a variable plunger pump shell and an end cover, wherein a thread groove is formed in a port of the shell, the end cover is installed at the thread groove in a threaded manner, a sealing fixing assembly is installed in the thread groove, the sealing fixing assembly comprises a first sealing ring, the first sealing ring is installed in the thread groove, a clamping groove for clamping and fixing a plunger pump core is formed in the inner wall of the shell, a plunger pump core sealing assembly is installed in the shell, and the plunger pump core sealing assembly comprises a fixing ring which is fixedly installed on the inner wall of the shell.
Preferably, the sealing and fixing assembly further comprises a pushing ring, the pushing ring is located in the threaded groove, the side wall of the pushing ring is fixedly connected with a plurality of T-shaped connecting rods, the connecting rods penetrate through the shell and extend to the outside, tension springs are sleeved on the outer portions of the connecting rods, and two ends of the tension springs are fixedly connected with the connecting rods and the shell respectively.
Preferably, the sealing and fixing assembly further comprises a T-shaped mounting column, the mounting column is fixedly mounted at the top of the shell, an L-shaped clamping column is inserted on the surface of the mounting column, a spring is sleeved on the surface of the mounting column, and the spring is located above the clamping column.
Preferably, the sealing and fixing assembly further comprises a connecting port and a plug-in port, wherein the connecting port is formed in the surface of the shell, and the plug-in port is formed in the surface of the end cover.
Preferably, the surface of the fixed ring is fixedly connected with a plurality of mounting rods, and the surface of the mounting rods is inserted with a second sealing ring with a through socket on the surface.
Preferably, the surface of the mounting rod is inserted with an annular extrusion frame with a penetrating socket on the surface.
The utility model has the advantages that:
1. according to the utility model, the connection part is sealed by the pair of sealing rings, the pushing ring can push the first sealing ring out of the threaded groove by the tension of the tension spring, so that the replacement is convenient, the clamping column is tightly inserted into the interior of the insertion port by the elastic force of the spring, the end cover is prevented from loosening by vibration generated when the variable plunger pump works, and the use is convenient.
2. According to the utility model, the second plunger pump core and the shell are sealed through the second sealing ring, the second sealing ring is guided through the mounting rod, and the annular extrusion frame is pushed through the end cover, so that the second sealing ring is tightly sealed by the annular extrusion frame and the fixed ring clamp, and further, the second sealing ring is rapidly fixed.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view of the housing of the present utility model;
FIG. 3 is a schematic view of the structure A of FIG. 2 according to the present utility model;
FIG. 4 is a schematic view of the structure B of FIG. 3 according to the present utility model;
fig. 5 is an exploded view of the plunger pump cartridge seal assembly of the present utility model.
In the figure: 1. a housing; 2. an end cap; 3. a thread groove; 4. a seal-fixing assembly; 41. a first sealing ring; 42. a push ring; 43. a connecting rod; 44. a tension spring; 45. a mounting column; 46. a clamping column; 47. a spring; 48. a connection port; 49. an interface; 5. a clamping groove; 6. a plunger pump core seal assembly; 61. a fixing ring; 62. a mounting rod; 63. a second sealing ring; 64. an annular extrusion frame.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, a cylinder for a variable displacement pump includes a housing 1 and an end cap 2 of the variable displacement pump, a threaded groove 3 is formed at a port of the housing 1, the end cap 2 is mounted at the threaded groove 3 in a threaded manner, a seal fixing component 4 is mounted in the threaded groove 3, the seal fixing component 4 includes a first seal ring 41, the first seal ring 41 is mounted in the threaded groove 3, a clamping groove 5 for clamping and fixing a pump core of the variable displacement pump is formed in an inner wall of the housing 1, a pump core sealing component 6 is mounted in the housing 1, the pump core sealing component 6 includes a fixing ring 61, the fixing ring 61 is fixedly mounted on the inner wall of the housing 1, the housing 1 and the end cap 2 are in threaded connection to form the cylinder for the variable displacement pump, and the connection is sealed by the first seal ring 41.
The seal fixing assembly 4 further comprises a pushing ring 42, the pushing ring 42 is located inside the thread groove 3, the side wall of the pushing ring 42 is fixedly connected with a plurality of T-shaped connecting rods 43, the connecting rods 43 penetrate through the shell 1 and extend to the outside, tension springs 44 are sleeved outside the connecting rods 43, two ends of each tension spring 44 are fixedly connected with the connecting rods 43 and the shell 1 respectively, when the first seal ring 41 is replaced, the end cover 2 is opened, the pushing ring 42 can push the first seal ring 41 out of the thread groove 3 through the tension of the tension springs 44, replacement is convenient, and when the shell 1 and the end cover 2 are connected, the first seal ring 41 and the pushing ring 42 are extruded to the deep of the thread groove 3 to seal.
The seal fixing assembly 4 further comprises a T-shaped mounting column 45, the mounting column 45 is fixedly mounted at the top of the shell 1, an L-shaped clamping column 46 is inserted into the surface of the mounting column 45, a spring 47 is sleeved on the surface of the mounting column 45, the spring 47 is arranged above the clamping column 46, after the shell 1 is connected with the end cover 2, a connecting port 48 of the clamping column 46 is aligned with the inserting port 49, the clamping column 46 is rotated and tightly inserted into the inserting port 49 through the elastic force of the spring 47, the position of the end cover 2 is further fixed again, and the end cover 2 is prevented from being loosened by vibration generated during operation of the variable plunger pump, so that the use is convenient.
The seal fixing assembly 4 further comprises a connecting port 48 and a plug-in port 49, wherein the connecting port 48 is formed in the surface of the shell 1, and the plug-in port 49 is formed in the surface of the end cover 2.
The fixed ring 61's fixed surface is connected with a plurality of installation pole 62, the surface grafting of installation pole 62 has the surface to offer the sealing washer two 63 of penetrating the socket, seal between plunger pump core and the casing 1 through sealing washer two 63, when installing sealing washer two 63, in proper order with sealing washer two 63 and annular extrusion frame 64 peg graft on installation pole 62, lead sealing washer two 63 through installation pole 62, and promote annular extrusion frame 64 through end cover 2, make annular extrusion frame 64 and fixed ring 61 clamp sealing washer two 63, and then carry out quick fixation to sealing washer two 63, compared in the prior art, extract annular extrusion frame 64, make things convenient for the follow-up dismantlement of sealing washer two 63 to change.
The surface of the mounting rod 62 is inserted with an annular extrusion frame 64 with a penetrating socket.
According to the working principle, the shell 1 and the end cover 2 are in threaded connection to form a cylinder body of the variable plunger pump, the joint is sealed through the first sealing ring 41, after the shell 1 and the end cover 2 are connected, the connecting port 48 of the clamping column 46 is aligned with the inserting port 49, the clamping column 46 is rotated and tightly inserted into the inserting port 49 through the elastic force of the spring 47, the position of the end cover 2 is further fixed again, and the end cover 2 is prevented from loosening due to vibration generated during the working of the variable plunger pump, so that the variable plunger pump is convenient to use;
when the first sealing ring 41 is replaced, the end cover 2 is opened, the first sealing ring 41 can be pushed out of the threaded groove 3 by the pushing ring 42 through the tension of the tension spring 44, the replacement is convenient, and when the shell 1 is connected with the end cover 2, the first sealing ring 41 and the pushing ring 42 are extruded to the depth of the threaded groove 3 for sealing;
sealing is carried out between the plunger pump core and the shell 1 through the second sealing ring 63, when the second sealing ring 63 is installed, the second sealing ring 63 and the annular extrusion frame 64 are sequentially inserted on the installation rod 62, the second sealing ring 63 is guided through the installation rod 62, the annular extrusion frame 64 is pushed through the end cover 2, the second sealing ring 63 is clamped by the annular extrusion frame 64 and the fixing ring 61, and then the second sealing ring 63 is quickly fixed.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (6)
1. The utility model provides a cylinder body for variable plunger pump, includes casing (1) and end cover (2) of variable plunger pump, its characterized in that: the utility model discloses a plunger pump, including casing (1), end cover (2), screw thread groove (3) have been seted up to the port department of casing (1), end cover (2) screw thread installation is in screw thread groove (3) department, the internally mounted of screw thread groove (3) has sealed fixed subassembly (4), sealed fixed subassembly (4) include sealing washer one (41), the inside at screw thread groove (3) is installed to sealing washer one (41), draw-in groove (5) of the fixed plunger pump core of joint have been seted up to the inner wall of casing (1), the internally mounted of casing (1) has plunger pump core seal subassembly (6), plunger pump core seal subassembly (6) include solid fixed ring (61), gu fixed ring (61) fixed mounting is at the inner wall of casing (1).
2. A cylinder for a variable displacement pump according to claim 1, wherein: the sealing and fixing assembly (4) further comprises a pushing ring (42), the pushing ring (42) is located inside the thread groove (3), a plurality of T-shaped connecting rods (43) are fixedly connected to the side wall of the pushing ring (42), the connecting rods (43) penetrate through the shell (1) and extend to the outside, tension springs (44) are sleeved outside the connecting rods (43), and two ends of each tension spring (44) are fixedly connected with the connecting rods (43) and the shell (1) respectively.
3. A cylinder for a variable displacement pump according to claim 1, wherein: the sealing and fixing assembly (4) further comprises a T-shaped mounting column (45), the mounting column (45) is fixedly mounted at the top of the shell (1), an L-shaped clamping column (46) is inserted into the surface of the mounting column (45), a spring (47) is sleeved on the surface of the mounting column (45), and the spring (47) is located above the clamping column (46).
4. A cylinder for a variable displacement pump according to claim 1, wherein: the sealing and fixing assembly (4) further comprises a connecting port (48) and a plug-in port (49), the connecting port (48) is formed in the surface of the shell (1), and the plug-in port (49) is formed in the surface of the end cover (2).
5. A cylinder for a variable displacement pump according to claim 1, wherein: the surface of the fixed ring (61) is fixedly connected with a plurality of mounting rods (62), and a second sealing ring (63) with a penetrating socket is inserted into the surface of the mounting rods (62).
6. A cylinder for a variable displacement pump according to claim 5, wherein: the surface of the mounting rod (62) is inserted with an annular extrusion frame (64) with a penetrating socket on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321455296.7U CN220302328U (en) | 2023-06-08 | 2023-06-08 | Cylinder body for variable plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321455296.7U CN220302328U (en) | 2023-06-08 | 2023-06-08 | Cylinder body for variable plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220302328U true CN220302328U (en) | 2024-01-05 |
Family
ID=89376706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321455296.7U Active CN220302328U (en) | 2023-06-08 | 2023-06-08 | Cylinder body for variable plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220302328U (en) |
-
2023
- 2023-06-08 CN CN202321455296.7U patent/CN220302328U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |