CN211116544U - Displacement control device of plunger pump - Google Patents
Displacement control device of plunger pump Download PDFInfo
- Publication number
- CN211116544U CN211116544U CN201921326633.6U CN201921326633U CN211116544U CN 211116544 U CN211116544 U CN 211116544U CN 201921326633 U CN201921326633 U CN 201921326633U CN 211116544 U CN211116544 U CN 211116544U
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- plunger pump
- adjusting
- adjusting rod
- control device
- displacement control
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Abstract
The utility model discloses a displacement control device of a plunger pump, which comprises a shell, wherein a left side cover and a right side cover are connected on the shell, the left side cover and the right side cover form an accommodating cavity, a variable rod is arranged in the accommodating cavity, and the variable rod makes reciprocating motion in the accommodating cavity; the left side lid is equipped with and is used for the spacing adjusting part of variable quantity pole, adjusting part includes: the outer wall of the adjusting rod is provided with threads, and the adjusting rod extends into the accommodating cavity; the adjusting body is provided with an inner cavity, the inner cavity is provided with threads matched with the adjusting rod, and one end of the adjusting body is connected with the left side cover. The utility model is used for transfer plunger pump maximum discharge capacity, its regulative mode is simple, the operation of being convenient for.
Description
Technical Field
The utility model relates to a plunger pump technical field especially relates to a displacement control device of plunger pump.
Background
The maximum displacement of the A4VSO plunger pump is set by adjusting the extension length of a set screw on a large side cover flange, changing the maximum position of a variable rod, setting the maximum displacement position of the plunger pump, fixing the set screw by using a nut and a nut to prevent the set screw from loosening, and sealing the nut and the nut by using a sealing ring to prevent hydraulic oil from leaking from the set screw.
By adopting the setting mode, when the maximum discharge capacity of the A4VSO plunger pump is regulated, the side cover screw cap at the end of the large side cover needs to be unscrewed, then the maximum discharge capacity can be set by adjusting the inner hexagonal flat end fastening screw, the regulating mode is complex, accidents such as oil leakage and the like are easily caused by repeated dismounting, and the condition of difficult use exists in production.
Disclosure of Invention
The utility model aims to solve the technical problem that a displacement control device of plunger pump is provided for the maximum discharge capacity of setting plunger pump, its regulative mode is simple, the operation of being convenient for.
In order to solve the technical problem, the utility model provides a displacement control device of a plunger pump, which comprises a shell, wherein a left side cover and a right side cover are connected on the shell, the left side cover and the right side cover form an accommodating cavity, a variable rod is arranged in the accommodating cavity, and the variable rod reciprocates in the accommodating cavity;
the left side lid is equipped with and is used for the spacing adjusting part of variable quantity pole, adjusting part includes:
the outer wall of the adjusting rod is provided with threads, and the adjusting rod extends into the accommodating cavity;
the adjusting body is provided with an inner cavity, the inner cavity is provided with threads matched with the adjusting rod, and one end of the adjusting body is connected with the left side cover.
As an improvement of the technical scheme, one end of the adjusting rod is provided with a hand wheel, and the adjusting rod is in key connection with the hand wheel;
the end of the adjusting rod is also provided with a hand wheel pressing block for fixing the hand wheel.
As an improvement of the technical scheme, the adjusting body is connected with the screw plug cover, the screw plug cover is provided with a mounting hole for mounting the adjusting rod, and the inner wall of the mounting hole is provided with a first sealing groove.
As an improvement of the technical scheme, the adjusting rod is provided with a plurality of shaft shoulders so as to divide the adjusting rod into a hand wheel fixing section, a plug screw cover mounting section, a thread matching section and a limiting extension section.
As an improvement of the technical scheme, the mounting hole of the screw plug cover is a stepped hole, and the diameter of a large hole of the stepped hole is larger than the outer diameter of the thread matching section.
As the improvement of the technical scheme, the left end surface and the right end surface of the adjusting body are both provided with a second sealing groove.
As an improvement of the technical scheme, a third sealing groove is formed in the adjusting rod.
As an improvement of the technical scheme, O-shaped sealing rings are arranged in the first sealing groove, the second sealing groove and the third sealing groove.
As an improvement of the above technical scheme, the left side cover and the right side cover are both provided with oil ports for introducing hydraulic oil into the accommodating cavity.
As an improvement of the technical scheme, the inner walls of the left side cover and the right side cover are provided with pressure equalizing grooves.
Implement the utility model discloses, following beneficial effect has:
the utility model discloses a casing left side lid and right side lid, casing, left side lid and right side lid form the holding chamber, the holding intracavity is equipped with the variable rod, reciprocating motion is made at the holding intracavity to the variable rod. The control assembly comprises an adjusting rod and an adjusting body, the adjusting body is connected with the left side cover, the adjusting body is in threaded connection with the adjusting rod, the length of the adjusting rod extending into the containing cavity is adjusted through rotation, the movement limit position of the variable rod is controlled, and therefore the control over the maximum displacement of the plunger pump is achieved, the control mode is simple, and the operability is good.
Drawings
Fig. 1 is a full sectional view of a displacement control device according to the present invention;
FIG. 2 is a schematic structural view of the adjustment assembly of FIG. 1;
FIG. 3 is a schematic view of the structure of the adjustment lever of FIG. 2;
FIG. 4 is a schematic view of the structure of the regulating body of FIG. 2;
fig. 5 is a schematic structural view of the screw cap of fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. Only this statement, the utility model discloses the upper and lower, left and right, preceding, back, inside and outside etc. position words that appear or will appear in the text only use the utility model discloses an attached drawing is the benchmark, and it is not right the utility model discloses a concrete restriction.
Referring to fig. 1 and 2, the utility model discloses a displacement control device of a plunger pump, which comprises a shell 1, wherein the shell 1 is connected with a left side cover 2 and a right side cover 3, the shell 1, the left side cover 2 and the right side cover 3 form an accommodating cavity 4, a variable rod 5 is arranged in the accommodating cavity 4, and the variable rod 5 reciprocates in the accommodating cavity 4;
the outer wall of the adjusting rod 61 is provided with threads, and the adjusting rod 61 extends into the accommodating cavity 4;
the adjusting body 62 is provided with an inner cavity, the inner cavity is provided with threads matched with the adjusting rod 61, and one end of the adjusting body 62 is connected with the left side cover 2.
Specifically, sealing connection forms holding chamber 4 between left side lid 2, casing 1 and the right side lid 3, variable rod 5 locates in the holding chamber 4, the both ends of variable rod 5 respectively with left side lid 2 and right side lid 3 sliding connection, form two cavities between left side lid 2 and right side lid 3 and the variable rod 5, be equipped with corresponding hydraulic fluid port 21/31 on left side lid 2 and the right side lid 3, through control to hydraulic fluid port 21/31 oil feed or produce oil, realize that variable rod 5 carries out reciprocating motion. The variable rod 5 is connected with a swash plate of the plunger pump, and the maximum displacement of the plunger pump can be controlled by controlling the movement limit position of the variable rod 5. In order to adjust the movement limit position of the variable rod 5, the utility model discloses an adjusting part 6 is set. The adjusting assembly 6 comprises an adjusting rod 61 and an adjusting body 62, the adjusting body 62 is detachably connected with the left side cover 2, an inner cavity is formed in the adjusting body 62, and inner threads are formed in the inner cavity of the adjusting body 62; the adjusting rod 61 is inserted into the inner cavity, and the outer wall of the adjusting rod 61 is provided with external threads, so that the adjusting body 62 is in threaded connection with the adjusting rod 61. One end of the adjustment rod 61 extends into the chamber. In the left limit movement position of the variable lever 5, the variable lever 5 abuts against the adjustment lever 61. Since the adjusting body 62 is coupled to the left side cover 2, the length of the adjusting rod 61 extending into the chamber is adjusted by rotating the adjusting rod 61, so as to adjust the movement limit position of the variable rod 5. Compared with the prior art, the utility model discloses the regulative mode is simple, the operation of being convenient for.
The adjustment assembly 6 further includes a hand wheel 63 and a plug screw cover 64 provided on the adjustment lever 61. Referring to fig. 3, in order to facilitate the installation of the hand wheel 63, the plug screw cover 64 and the adjusting body 62, the adjusting rod 61 is provided with a plurality of shoulders, so as to divide the adjusting rod 61 into a hand wheel fixing section 611, a plug screw cover installing section 612, a thread matching section 613 and a limit extending section 614. The hand wheel fixing section 611 is used for fixing the hand wheel 63, a groove 615 for installing the elastic retainer ring 65 is arranged at the front end of the hand wheel fixing section 611, and a key groove 616 is arranged on the outer wall of the hand wheel fixing section 611; the plug cover mounting section 612 is used for mounting the plug cover 64, the outer diameter of the plug cover mounting section is matched with the inner diameter of the plug cover 64, and the length of the plug cover mounting section is greater than that of the plug cover 64, so that the adjusting rod 61 has a certain adjusting range; the thread fitting section 613 is provided with a full thread, and the length of the thread fitting section 613 is greater than that of the internal thread section of the adjusting body 62, so as to reduce resistance during adjustment.
Referring to fig. 4, the inner cavity of the adjusting body 62 is provided with a first step hole 621, a second step hole 622, and a third step hole 623, which have diameters decreasing from left to right. At the first step hole 621, the adjusting body 62 is connected with the plug screw cover 64; at the second stepped hole 622, the adjusting body 62 is matched with the thread matching section 613 of the adjusting rod 61, wherein a smooth section with a diameter larger than the major diameter of the thread is further arranged at the second stepped hole 622; at the third stepped hole 623, the adjustment body 62 cooperates with the limit extension 614 of the adjustment lever 61.
The hand wheel 63 is arranged at the end part of the adjusting rod 61, and the adjusting rod 61 is in key connection with the hand wheel 63; the end of the adjusting rod 61 is also provided with a hand wheel press block 66 for fixing the hand wheel 63. A fastening screw 67 is also arranged between the hand wheel pressing block 66 and the adjusting rod 61. The hand wheel 63 increases the convenience of adjustment and reduces the resistance when rotating the adjustment lever 61.
Referring to fig. 5, the plug cover 64 includes a cover body 641 and a boss 624 integrally formed with the cover body 641, wherein the boss 624 is provided with external threads. The adjusting body 62 is provided with an internal thread matched with the external thread of the boss 624, and the plug cover 64 is in threaded connection with the adjusting body 62. The plug screw cover 64 is provided with a mounting hole 643 for mounting the adjustment lever 61.
Further, the mounting hole 643 of the plug screw cover 64 is a stepped hole whose large hole has a diameter larger than the outer diameter of the screw fitting section 613 of the adjustment rod 61. The small diameter of the stepped hole is matched with the diameter of the plug screw cover mounting section 612 of the adjusting rod 61. When the adjusting rod 61 is adjusted, the thread matching section 613 of the adjusting rod 61 is screwed into the large hole of the stepped hole, so that the adjusting amount of the adjusting rod 61 in a large range is realized.
A first sealing groove 644 is formed in the inner wall of the mounting hole 643; the left end face and the right end face of the adjusting body 62 are both provided with a second sealing groove 624; the adjusting rod 61 is provided with a third sealing groove 617. O-ring seals are disposed in the first, second and third seal grooves 644, 624, 617. By arranging the first sealing groove 644, the second sealing groove 624, the third sealing groove 617 and the corresponding O-shaped sealing rings, leakage of hydraulic oil in the cavity is avoided.
In addition, the inner walls of the left side cover 2 and the right side cover 3 are provided with pressure equalizing grooves 22/32. The equalizing groove 22/32 is provided, and in a working state, the variable rod 5 makes high-frequency reciprocating motion in the accommodating cavity 4, and the equalizing groove 22/32 is used for compensating the clamping caused by the unbalance loading under the action of hydraulic pressure caused by machining errors.
To sum up, the utility model discloses a control assembly is including adjusting pole 61 and regulating body 62, regulating body 62 is connected with left side lid 2, regulating body 62 with adjust pole 61 threaded connection, through the length that rotatory regulation pole 61 stretched into holding chamber 4, control variable rod 5's motion extreme position to the realization is to the control of plunger pump maximum discharge capacity, and its control mode is simple, and the operability is good.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. A displacement control device of a plunger pump is characterized by comprising a shell, wherein a left side cover and a right side cover are connected to the shell, the left side cover and the right side cover form an accommodating cavity, a variable rod is arranged in the accommodating cavity, and the variable rod reciprocates in the accommodating cavity;
the left side lid is equipped with and is used for the spacing adjusting part of variable quantity pole, adjusting part includes:
the outer wall of the adjusting rod is provided with threads, and the adjusting rod extends into the accommodating cavity;
the adjusting body is provided with an inner cavity, the inner cavity is provided with threads matched with the adjusting rod, and one end of the adjusting body is connected with the left side cover.
2. A displacement control device of a plunger pump according to claim 1, wherein a hand wheel is arranged at one end of the adjusting rod, and the adjusting rod is connected with the hand wheel in a key manner;
the end of the adjusting rod is also provided with a hand wheel pressing block for fixing the hand wheel.
3. A displacement control device of a plunger pump according to claim 2, wherein the adjusting body is connected to a plug screw cap, the plug screw cap is provided with a mounting hole for mounting the adjusting rod, and an inner wall of the mounting hole is provided with a first seal groove.
4. A displacement control device of a plunger pump according to claim 3, wherein the adjusting rod is provided with a plurality of shoulders to divide the adjusting rod into a hand wheel fixing section, a plug screw cover mounting section, a screw thread fitting section and a limit extension section.
5. A displacement control device of a plunger pump according to claim 4, wherein the mounting hole of the plug cap is a stepped hole whose large hole has a diameter larger than an outer diameter of the thread engagement section.
6. A displacement control device of a plunger pump according to claim 3, wherein the left and right end faces of the adjustment body are each provided with a second seal groove.
7. A displacement control device of a plunger pump according to claim 6, wherein the adjusting rod is provided with a third seal groove.
8. A displacement control device of a plunger pump according to claim 7, wherein O-ring seals are provided in the first, second and third seal grooves.
9. A displacement control device of a plunger pump according to claim 1, wherein the left side cover and the right side cover are each provided with an oil port for introducing hydraulic oil into the accommodating chamber.
10. A displacement control device of a plunger pump according to claim 1, characterized in that the inner walls of the left and right side covers are each provided with a pressure equalizing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921326633.6U CN211116544U (en) | 2019-08-14 | 2019-08-14 | Displacement control device of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921326633.6U CN211116544U (en) | 2019-08-14 | 2019-08-14 | Displacement control device of plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211116544U true CN211116544U (en) | 2020-07-28 |
Family
ID=71694005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921326633.6U Active CN211116544U (en) | 2019-08-14 | 2019-08-14 | Displacement control device of plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211116544U (en) |
-
2019
- 2019-08-14 CN CN201921326633.6U patent/CN211116544U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 528300 No. 12, 10th Road, Guanglong Industrial Zone, Chencun Town, Shunde District, Foshan City, Guangdong Province Patentee after: Guangdong Keda Hydraulic Technology Co.,Ltd. Address before: No.12, 10 road, Guanglong Industrial Zone, Chencun Town, Shunde District, Foshan City, Guangdong Province, 528313 Patentee before: FOSHAN KEDA HYDRAULIC MACHINERY Co.,Ltd. |
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| CP03 | Change of name, title or address |