CN212508781U - Cylinder body assembly structure for variable plunger pump - Google Patents
Cylinder body assembly structure for variable plunger pump Download PDFInfo
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- CN212508781U CN212508781U CN201922467615.6U CN201922467615U CN212508781U CN 212508781 U CN212508781 U CN 212508781U CN 201922467615 U CN201922467615 U CN 201922467615U CN 212508781 U CN212508781 U CN 212508781U
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- plunger pump
- end cover
- shell
- assembly structure
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Abstract
The utility model discloses a cylinder body sub-assembly structure for variable plunger pump, including casing and end cover, inlay the dress respectively on the lateral wall of casing and be fixed with two sets of first sleeve pipes, it is two sets of first sheathed tube inside is provided with two sets of connecting pipes that are used for intercommunication plunger pump core to intake and go out the water end respectively, the draw-in groove of the fixed plunger pump core of joint is seted up to inner wall one side of casing, and is fixed to adhere on the inner wall of casing and have the annular sealing pad, the end cover passes through fixing bolt fixed mounting in one side of casing, one side fixed adhesion of end cover has the sealing strip, the slot corresponding with the sealing strip has been seted up to one side of casing, the sealing strip is located the inside of slot. The utility model discloses a fixed bonding has the annular seal pad on the inner wall of casing, has the sealing strip in the fixed bonding of one side of end cover to inside the draw-in groove of sealing strip joint in casing one side, carry out multiple sealing, ensured the leakproofness of cylinder body sub-assembly structure.
Description
Technical Field
The utility model relates to a variable plunger pump cylinder body sub-assembly technical field specifically is a cylinder body sub-assembly structure for variable plunger pump.
Background
The pressure oil of the variable plunger pump enters the lower cavity of the variable shell through the oil through hole in the variable shell of the pump body and the pump shell and the one-way valve, when the pull rod moves downwards, the servo piston is pushed to move downwards, the upper valve opening of the servo valve is opened, the pressure oil in the lower cavity of the variable shell enters the upper cavity of the variable shell through the oil through hole in the variable piston, and as the area of the upper cavity is larger than that of the lower cavity, the piston is pushed to move downwards by hydraulic pressure to drive the pin shaft to enable the variable head to rotate around the center of the steel ball, the inclination angle of the variable head is changed. Conversely, the pull rod moves upwards, the inclination angle of the variable head changes in the opposite direction, and the flow rate of the pump also changes. When the inclination angle is changed to zero, the variable head changes towards the direction of the negative deflection angle, the liquid flow is reversed, and the oil inlet and the oil outlet of the pump are changed.
Most of the existing variable plunger pumps are composed of plunger pump cores and cylinder bodies, the plunger pump cores are arranged inside the cylinder bodies, and then the shell and the end covers of the cylinder bodies are fixedly welded in a welding mode.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cylinder body composite member structure for variable plunger pump, this cylinder body composite member structure have the annular packing through fixed bonding on the inner wall of casing to seal up, have the sealing strip in one side fixed bonding of end cover to with the sealing strip joint inside the draw-in groove of casing one side, carry out multiple sealing, ensured the leakproofness of cylinder body composite member structure, with the problem of proposing in solving above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a cylinder body assembly structure for a variable plunger pump comprises a shell and an end cover, wherein two groups of first sleeves are respectively embedded and fixed on the side wall of the shell, two groups of connecting pipes for communicating a water inlet end and a water outlet end of a plunger pump core are respectively arranged inside the two groups of first sleeves, one side of the inner wall of the shell is provided with a clamping groove for clamping and fixing the plunger pump core, an annular sealing gasket is fixedly bonded on the inner wall of the shell, the end cover is fixedly arranged on one side of the shell through a fixing bolt, one side of the end cover is fixedly bonded with a sealing strip, one side of the shell is provided with a slot corresponding to the sealing strip, the sealing strip is positioned in the slot, one side of the end cover is provided with a through hole, a sealing bearing is embedded and fixed in the through hole, and a second sleeve for a plunger of a pump core of the plunger pump to penetrate is fixedly inserted into an inner ring of the sealing bearing.
Preferably, a counter bore through which the fixing bolt passes is formed in one side of the end cover, a threaded blind hole corresponding to the counter bore is formed in one side of the shell, and one end of the fixing bolt passes through the counter bore and is installed inside the threaded blind hole in a threaded manner.
Preferably, the first sleeve is a sleeve with an internal thread on the inner wall, the connecting pipe is a connecting pipe with a section of external thread on the outer wall, and the connecting pipe is installed inside the first sleeve in a threaded manner.
Preferably, one side of the end cover is fixedly bonded with an ejector block used for compressing and fixing the pump core of the plunger pump, and the ejector block is an annular ejector block.
Preferably, the annular sealing gasket is an elastic annular sealing gasket with arc chamfers at two sides.
Preferably, a sealing washer is fixedly bonded to one end of the connecting pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a fixed bonding has the annular seal pad on the inner wall of casing, and there is the sealing strip in the fixed bonding of one side of end cover, the slot corresponding with the sealing strip has been seted up in one side of casing, be located the inside of slot with the sealing strip, can make through the sealing strip and seal between end cover and the casing, and through sealing up the annular seal pad and set up the elasticity annular seal pad that has the circular arc chamfer into both sides, be convenient for make the laminating further seal between plunger pump core and the casing in the annular seal pad plunger pump core, compare in current variable plunger pump, sealing performance has been improved to a certain extent, and there is seal ring through the fixed bonding of one end at the connecting pipe, when intaking end and the play water end intercommunication with connecting pipe and plunger pump core, sealing performance when can ensureing the intercommunication.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the point A of FIG. 1 according to the present invention;
fig. 3 is a schematic structural view of the sealing gasket of the present invention.
In the figure: 1. a housing; 2. a first sleeve; 3. a connecting pipe; 4. a card slot; 5. an end cap; 6. an annular seal; 7. fixing the bolt; 8. a sealing strip; 9. a slot; 10. a through hole; 11. sealing the bearing; 12. A second sleeve; 13. a countersunk hole; 14. a threaded blind hole; 15. a top block; 16. a gasket is provided.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a cylinder body assembly structure for a variable plunger pump comprises a shell 1 and an end cover 5, wherein two groups of first sleeves 2 are fixedly embedded on the side wall of the shell 1 in an embedded mode respectively, two groups of connecting pipes 3 for communicating the water inlet end and the water outlet end of a plunger pump core are arranged inside the two groups of first sleeves 2 respectively, one end of each connecting pipe 3 is fixedly bonded with a sealing washer 16, each first sleeve 2 is provided with a sleeve with an internal thread on the inner wall, each connecting pipe 3 is provided with a connecting pipe with a section of external thread on the outer wall, each connecting pipe 3 is arranged inside the corresponding first sleeve 2 in a threaded mode, one side of the inner wall of the shell 1 is provided with a clamping groove 4 for clamping and fixing the plunger pump core in a clamped mode, an annular sealing gasket 6 is fixedly bonded on the inner wall of the shell 1, the end cover 5 is fixedly mounted on one side of the shell 1 through a fixing bolt 7, a sealing strip 8 is, a threaded blind hole 14 corresponding to the counter bore 13 is formed in one side of the shell 1, one end of a fixing bolt 7 penetrates through the counter bore 13 and is installed inside the threaded blind hole 14 in a threaded mode, an ejector block 15 used for compressing and fixing a plunger pump core is fixedly bonded to one side of the end cover 5, the ejector block 15 is an annular ejector block, and the annular sealing gasket 6 is an elastic annular sealing gasket with arc chamfers on two sides;
a slot 9 corresponding to the sealing strip 8 is formed in one side of the shell 1, the sealing strip 8 is located inside the slot 9, a through hole 10 is formed in one side of the end cover 5, a sealing bearing 11 is fixedly embedded in the through hole 10, and a second sleeve 12 for a plunger of a pump core of the plunger pump to penetrate through is fixedly inserted into an inner ring of the sealing bearing 11.
The structure principle is as follows: the cylinder assembly structure is characterized in that an annular sealing gasket 6 is fixedly bonded on the inner wall of the shell 1, a sealing strip 8 is fixedly bonded on one side of the end cover 5, a slot 9 corresponding to the sealing strip 8 is arranged at one side of the shell 1, the sealing strip 8 is positioned inside the slot 9, the sealing between the end cover 5 and the shell 1 can be realized through the sealing strip 8, and the annular sealing gasket 6 is arranged into an elastic annular sealing gasket with arc chamfers at two sides, so that the plunger pump core attached to the annular sealing gasket 6 can further seal the space between the plunger pump core and the shell 1, compared with the prior variable plunger pump, the sealing performance is improved to a certain extent, and the sealing gasket 16 is fixedly bonded at one end of the connecting pipe 3, when the connecting pipe 3 is communicated with the water inlet end and the water outlet end of the pump core of the plunger pump, the sealing performance during communication can be ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A cylinder block assembly structure for a variable displacement plunger pump, comprising a housing (1) and an end cap (5), characterized in that: the side wall of the shell (1) is respectively provided with two groups of first sleeves (2) in an embedded mode, the two groups of first sleeves (2) are respectively provided with two groups of connecting pipes (3) used for communicating the water inlet end and the water outlet end of the plunger pump core, one side of the inner wall of the shell (1) is provided with a clamping groove (4) for clamping and fixing the plunger pump core, the inner wall of the shell (1) is fixedly bonded with an annular sealing gasket (6), the end cover (5) is fixedly installed on one side of the shell (1) through a fixing bolt (7), one side of the end cover (5) is fixedly bonded with a sealing strip (8), one side of the shell (1) is provided with a slot (9) corresponding to the sealing strip (8), the sealing strip (8) is located inside the slot (9), one side of the end cover (5) is provided with a through hole (10), and the inside of the through hole (10) is fixedly embedded with a, and a second sleeve (12) for a plunger of a pump core of the plunger pump to penetrate is fixedly inserted into the inner ring of the sealing bearing (11).
2. A cylinder block assembly structure for a variable displacement plunger pump as set forth in claim 1, wherein: the end cover is characterized in that a counter bore (13) used for penetrating through a fixing bolt (7) is formed in one side of the end cover (5), a threaded blind hole (14) corresponding to the counter bore (13) is formed in one side of the shell (1), and one end of the fixing bolt (7) penetrates through the counter bore (13) and is installed inside the threaded blind hole (14) in a threaded mode.
3. A cylinder block assembly structure for a variable displacement plunger pump as set forth in claim 1, wherein: the first sleeve (2) is a sleeve with an internal thread on the inner wall, the connecting pipe (3) is a connecting pipe with a section of external thread on the outer wall, and the connecting pipe (3) is installed inside the first sleeve (2) in a threaded mode.
4. A cylinder block assembly structure for a variable displacement plunger pump as set forth in claim 1, wherein: and an ejector block (15) used for compressing and fixing the pump core of the plunger pump is fixedly bonded on one side of the end cover (5), and the ejector block (15) is an annular ejector block.
5. A cylinder block assembly structure for a variable displacement plunger pump as set forth in claim 1, wherein: the annular sealing gasket (6) is an elastic annular sealing gasket with arc chamfers at two sides.
6. A cylinder block assembly structure for a variable displacement plunger pump as set forth in claim 1, wherein: and a sealing gasket (16) is fixedly bonded at one end of the connecting pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467615.6U CN212508781U (en) | 2019-12-31 | 2019-12-31 | Cylinder body assembly structure for variable plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467615.6U CN212508781U (en) | 2019-12-31 | 2019-12-31 | Cylinder body assembly structure for variable plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212508781U true CN212508781U (en) | 2021-02-09 |
Family
ID=74385874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922467615.6U Active CN212508781U (en) | 2019-12-31 | 2019-12-31 | Cylinder body assembly structure for variable plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212508781U (en) |
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2019
- 2019-12-31 CN CN201922467615.6U patent/CN212508781U/en active Active
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