CN111005852B - Highly integrated reciprocating plunger pump - Google Patents
Highly integrated reciprocating plunger pump Download PDFInfo
- Publication number
- CN111005852B CN111005852B CN201911388814.6A CN201911388814A CN111005852B CN 111005852 B CN111005852 B CN 111005852B CN 201911388814 A CN201911388814 A CN 201911388814A CN 111005852 B CN111005852 B CN 111005852B
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- Prior art keywords
- piston
- pump
- end cover
- communicated
- positioning
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
- F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
- F04B9/1056—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor with fluid-actuated inlet or outlet valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
- F04B53/162—Adaptations of cylinders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a highly integrated reciprocating plunger pump, which comprises a pump body, wherein a left through mounting hole and a right through mounting hole are formed in the pump body; a piston body moving left and right is connected in the mounting hole in a sliding manner; a left piston cavity is formed between the left end cover and the piston body in the pump body, and a right piston cavity is formed between the right end cover and the piston body; the side surface of the outer circumference of the pump body is provided with a P port and a T port which are communicated with the mounting hole; the left side of the left end cover is provided with a piston assembly for sucking and discharging liquid, and the left end cover also comprises a control assembly, wherein the control assembly is used for controlling the piston body to move left and right in the mounting hole; the highly integrated reciprocating plunger pump is simple in structure, highly integrated, small in size and simple in driving mode.
Description
Technical Field
The invention belongs to the technical field of reciprocating pumps, and particularly relates to a highly integrated reciprocating plunger pump.
Background
In the application field of reciprocating pumps, the most widely used three-cylinder single-acting piston type reciprocating pump is driven by a power source, and three pistons of the reciprocating pump reciprocate left and right at different phases. The three-cylinder single-action reciprocating pump with the structure mostly adopts the motion principle of a crankshaft connecting rod, cannot adopt hydraulic drive, cannot automatically reverse, and has the advantages of complex mechanical structure, large volume, low mechanical efficiency, easy abrasion of moving parts and high maintenance cost.
Accordingly, the applicant has sought to provide a hydraulically driven reciprocating pump.
Disclosure of Invention
The invention aims to provide a highly integrated reciprocating plunger pump which is simple in structure, highly integrated, small in volume and simple in driving mode.
In order to achieve the purpose, the invention provides the following technical scheme: a highly integrated reciprocating plunger pump comprises a pump body, wherein a left through mounting hole and a right through mounting hole are formed in the pump body, a left end cover is fixedly mounted at the left end of the pump body, and a right end cover is fixedly mounted at the right end of the pump body; a piston body moving left and right is connected in the mounting hole in a sliding manner; a left piston cavity is formed between the left end cover and the piston body in the pump body, and a right piston cavity is formed between the right end cover and the piston body; the side surface of the outer circumference of the pump body is provided with a P port and a T port which are communicated with the mounting hole; the left side of left end cover is equipped with and is used for imbibition and flowing back piston assembly, still includes control assembly, control assembly is used for controlling the piston body and moves about in the mounting hole.
In a further technical scheme, the piston assembly comprises a left pump shell, the left pump shell is fixedly installed on the left side of a left end cover, a guide sliding hole communicated with the installation hole is formed in the left end cover along the movement direction of the piston body, a piston rod penetrating through the guide sliding hole and extending into the left pump shell is arranged on the left side of the piston body, a left piston is fixedly installed at the left end of the piston rod in the left pump shell, a left rodless cavity is formed between the left piston in the left pump shell and the left end of the left pump shell, and a left inlet check valve and a left outlet check valve communicated with the left rodless cavity are arranged at the left end of the left pump shell.
In a further technical scheme, the control assembly comprises a left proximity sensor, a right proximity sensor, a stepping motor and a controller, wherein the left proximity sensor is installed on the outer circumferential side surface of the pump body and is close to the left end cover, and the right proximity sensor is installed on the outer circumferential side surface of the pump body and is close to the right end cover; the right end of the piston body is provided with a sliding hole with an opening at the right end along the movement direction of the piston body, the inner side wall of the sliding hole is provided with a sliding chute along the axial direction of the sliding hole, the stepping motor is fixedly arranged on the right end cover, the output shaft of the stepping motor penetrates through the right end cover and extends into the sliding chute, and the output shaft of the stepping motor is fixedly provided with a positioning block positioned in the sliding chute; a left cutting groove communicated with the left piston cavity and a right cutting groove communicated with the right piston cavity are formed in the side face of the outer circumference of the piston body;
when the left proximity sensor senses the piston body, the controller controls the stepping motor to rotate, so that the port P is communicated with the left piston cavity through the left cutting groove, and the port T is communicated with the right piston cavity through the right cutting groove; when the right proximity sensor senses the piston body, the controller controls the stepping motor to rotate, so that the opening P is communicated with the right piston cavity through the right cutting groove, and the opening T is communicated with the left piston cavity through the left cutting groove.
In a further technical scheme, a boss is arranged on the surface of the left end cover facing the left pump shell, a positioning hole communicated with the slide guiding hole is arranged on the outer circumferential side surface of the boss along the radial direction of the slide guiding hole, a positioning ball is arranged in the positioning hole, a plug is arranged on the positioning hole, a positioning spring is arranged between the positioning ball and the plug in the positioning hole, and the positioning spring is used for forcing the positioning ball to be tightly pressed on the piston rod; and the piston rod is provided with a positioning groove matched with the positioning ball, and when the piston body moves to the right end position of the mounting hole, the positioning ball falls into the positioning groove.
In a further technical scheme, a left rod cavity is formed between the left piston and the left end cover in the left pump shell, and a left vent hole communicated with the left rod cavity is formed in the side face of the left pump shell.
In a further technical scheme, the left proximity sensor and the right proximity sensor are both capacitance type proximity sensors.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) the invention has high integration, compact volume and convenient control;
(2) according to the invention, the stepping motor is used for controlling the rotation of the piston body to realize the switching of the oil way, so that the reciprocating motion of the left piston is realized, a special electromagnetic directional valve is not required to be arranged like the prior art, the structure is simpler, and the control is simpler.
Drawings
FIG. 1 is a block diagram of a piston body of the present invention moving to the rightmost end to begin moving to the left;
FIG. 2 is a block diagram of the piston body of the present invention as it moves to the far left end;
FIG. 3 is a block diagram of the piston body of the present invention as it moves to the far left end to begin moving to the right;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 1;
FIG. 5 is an enlarged view of the structure at D in FIG. 1;
FIG. 6 is a control system diagram of the control assembly of the present invention.
Detailed Description
Referring to fig. 1-6, a highly integrated reciprocating plunger pump includes a pump body 5, a left-right through mounting hole 501 is provided in the pump body 5, a left end cap 3 is fixedly mounted at the left end of the pump body 5, and a right end cap 7 is fixedly mounted at the right end of the pump body 5; a piston body 6 moving left and right is connected in the mounting hole 501 in a sliding manner; a left piston cavity 5a is formed between the left end cover 3 and the piston body 6 in the pump body 5, and a right piston cavity 5b is formed between the right end cover 7 and the piston body 6; the side surface of the outer circumference of the pump body 5 is provided with a P port and a T port which are communicated with the mounting hole 501; the left side of the left end cover 3 is provided with a piston assembly for sucking and discharging liquid, and the left end cover further comprises a control assembly, wherein the control assembly is used for controlling the piston body 6 to move left and right in the mounting hole 501.
The piston assembly comprises a left pump shell 1, the left pump shell 1 is fixedly installed on the left side of a left end cover 3, a sliding guide hole 301 communicated with an installation hole 501 is formed in the left end cover 3 along the movement direction of a piston body 6, a piston rod 6b penetrating through the sliding guide hole 301 and extending into the left pump shell 1 is arranged on the left side of the piston body 6, a left piston 2 is fixedly installed at the left end of the piston rod 6b in the left pump shell 1 through threaded connection, a left rodless cavity 1a is formed between the left piston 2 and the left end of the left pump shell 1 in the left pump shell 1, and a left inlet check valve 81 and a left outlet check valve 82 communicated with the left rodless cavity 1a are arranged at the left end of the left pump shell 1. A left rod cavity 1b is formed between the left piston 2 and the left end cover 3 in the left pump shell 1, and a left vent hole 1c communicated with the left rod cavity 1b is formed in the side face of the left pump shell 1.
The control assembly comprises a left proximity sensor 4a, a right proximity sensor 4b, a stepping motor 8 and a controller 12, wherein the left proximity sensor 4a is installed on the outer circumferential side surface of the pump body 5 and close to the left end cover 3, and the right proximity sensor 4b is installed on the outer circumferential side surface of the pump body 5 and close to the right end cover 7; a slide hole 61 with an opening at the right end is formed in the right end of the piston body 6 along the movement direction of the piston body, a slide groove 62 is formed in the inner side wall of the slide hole 61 along the axial direction of the slide hole, the stepping motor 8 is fixedly installed on the right end cover 7, an output shaft of the stepping motor 8 penetrates through the right end cover 7 and extends into the slide hole 61, and a positioning block 63 positioned in the slide groove 62 is fixedly arranged on the output shaft of the stepping motor 8; a left cutting groove 6c communicated with the left piston cavity 5a and a right cutting groove 6a communicated with the right piston cavity 5b are formed in the outer circumferential side face of the piston body 6; wherein, the left proximity sensor 4a and the right proximity sensor 4b are both capacitance type proximity sensors.
When the left proximity sensor 4a senses the piston body 6, the controller 12 controls the stepping motor 8 to rotate, so that the port P is communicated with the left piston cavity 5a through the left cutting groove 6c, and the port T is communicated with the right piston cavity 5b through the right cutting groove 6 a; when the right proximity sensor 4b senses the piston body 6, the controller 12 controls the stepping motor 8 to rotate, such that the port P communicates with the right piston chamber 5b through the right slot 6a and the port T communicates with the left piston chamber 5a through the left slot 6 c.
When the invention is used, the port P is connected with the outlet of the hydraulic pump, and the port T is directly communicated with the oil tank; when the piston body 6 moves to the right end of the mounting hole 501, the right proximity sensor 4b senses the piston body 6, the controller 12 controls the stepping motor 8 to drive the piston body 6 to rotate 180 degrees, as shown in fig. 1, at this time, the port P is communicated with the right piston cavity 5b through the right cutting groove 6a, the port T is communicated with the left piston cavity 5a through the left cutting groove 6c, the piston body 6 moves to the left, the piston body 6 drives the left piston 2 to move to the left in the left pump shell 1 through the piston rod 6b, and therefore liquid in the left rodless cavity 1a is discharged through the left discharge check valve 82. As shown in fig. 2, when the piston body 6 moves to the left end of the mounting hole 501, the left proximity sensor 4a senses the piston body 6, the controller 12 controls the stepping motor 8 to drive the piston body 6 to rotate 180 °, as shown in fig. 3, at this time, the port P is communicated with the left piston cavity 5a through the left cutting groove 6c, the port T is communicated with the right piston cavity 5b through the right cutting groove 6a, the piston body 6 moves to the right, and the piston body 6 drives the left piston 2 to move to the right through the piston rod 6b, so that the vacuum liquid formed in the left rodless cavity 1a enters through the left-entering check valve 81. So far, a cycle is formed to realize the reciprocating motion of the left piston 2.
In addition, a boss 31 is arranged on the surface of the left end cover 3 facing the left pump shell 1, a positioning hole 32 communicated with the slide guiding hole 301 is arranged on the outer circumferential side surface of the boss 31 along the radial direction of the slide guiding hole 301, a positioning ball 33 is arranged in the positioning hole 32, a plug 34 is arranged on the positioning hole 32, a positioning spring 35 is arranged between the positioning ball 33 and the plug 34 in the positioning hole 32, and the positioning spring 35 is used for forcing the positioning ball to be pressed on the piston rod 6 b; the piston rod 6b is provided with a positioning groove 6b1 matched with the positioning ball 33, and when the piston body 6 moves to the right end position of the mounting hole 501, the positioning ball 33 falls into the positioning groove 6b 1. The arrangement is to position the piston body 6 at its initial position during assembly so that the stepper motor 8 determines the origin position for electrical control.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A highly integrated reciprocating plunger pump is characterized by comprising a pump body, wherein a left through mounting hole and a right through mounting hole are formed in the pump body, a left end cover is fixedly mounted at the left end of the pump body, and a right end cover is fixedly mounted at the right end of the pump body; a piston body moving left and right is connected in the mounting hole in a sliding manner; a left piston cavity is formed between the left end cover and the piston body in the pump body, and a right piston cavity is formed between the right end cover and the piston body; the side surface of the outer circumference of the pump body is provided with a P port and a T port which are communicated with the mounting hole; the left side of the left end cover is provided with a piston assembly for sucking and discharging liquid, and the left end cover also comprises a control assembly, wherein the control assembly is used for controlling the piston body to move left and right in the mounting hole;
the piston assembly comprises a left pump shell, the left pump shell is fixedly arranged on the left side of a left end cover, a guide hole communicated with the mounting hole is formed in the left end cover along the motion direction of the piston body, a piston rod penetrating through the guide hole and extending into the left pump shell is arranged on the left side of the piston body, a left piston is fixedly arranged at the left end of the piston rod in the left pump shell, a left rodless cavity is formed between the left piston in the left pump shell and the left end of the left pump shell, and a left inlet check valve and a left outlet check valve communicated with the left rodless cavity are arranged at the left end of the left pump shell;
the control assembly comprises a left proximity sensor, a right proximity sensor, a stepping motor and a controller, wherein the left proximity sensor is installed on the outer circumferential side surface of the pump body and is close to the left end cover, and the right proximity sensor is installed on the outer circumferential side surface of the pump body and is close to the right end cover; the right end of the piston body is provided with a sliding hole with an opening at the right end along the movement direction of the piston body, the inner side wall of the sliding hole is provided with a sliding chute along the axial direction of the sliding hole, the stepping motor is fixedly arranged on the right end cover, the output shaft of the stepping motor penetrates through the right end cover and extends into the sliding chute, and the output shaft of the stepping motor is fixedly provided with a positioning block positioned in the sliding chute; a left cutting groove communicated with the left piston cavity and a right cutting groove communicated with the right piston cavity are formed in the side face of the outer circumference of the piston body;
when the left proximity sensor senses the piston body, the controller controls the stepping motor to rotate, so that the port P is communicated with the left piston cavity through the left cutting groove, and the port T is communicated with the right piston cavity through the right cutting groove; when the right proximity sensor senses the piston body, the controller controls the stepping motor to rotate, so that the opening P is communicated with the right piston cavity through the right cutting groove, and the opening T is communicated with the left piston cavity through the left cutting groove.
2. The highly integrated reciprocating plunger pump of claim 1, wherein the left end cap is provided with a boss on the surface facing the left pump casing, the outer circumferential side surface of the boss is provided with a positioning hole communicated with the slide guide hole along the radial direction of the slide guide hole, a positioning ball is arranged in the positioning hole, a plug is arranged on the positioning hole, a positioning spring is arranged in the positioning hole between the positioning ball and the plug, and the positioning spring is used for forcing the positioning ball to be pressed on the piston rod; and the piston rod is provided with a positioning groove matched with the positioning ball, and when the piston body moves to the right end position of the mounting hole, the positioning ball falls into the positioning groove.
3. The highly integrated reciprocating plunger pump of claim 1, wherein the left pump casing forms a left rod cavity between the left piston and the left end cap, and the side of the left pump casing is provided with a left vent hole communicating with the left rod cavity.
4. The highly integrated reciprocating plunger pump of claim 1, wherein the left and right proximity sensors are both capacitive proximity sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388814.6A CN111005852B (en) | 2019-12-30 | 2019-12-30 | Highly integrated reciprocating plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388814.6A CN111005852B (en) | 2019-12-30 | 2019-12-30 | Highly integrated reciprocating plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111005852A CN111005852A (en) | 2020-04-14 |
| CN111005852B true CN111005852B (en) | 2021-06-15 |
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ID=70119587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911388814.6A Active CN111005852B (en) | 2019-12-30 | 2019-12-30 | Highly integrated reciprocating plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111005852B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001115970A (en) * | 1999-10-18 | 2001-04-27 | Chuo Koeki Kk | Liquid filling device |
| CN205154526U (en) * | 2015-11-25 | 2016-04-13 | 福建海山机械股份有限公司 | Reciprocating type high pressure water pump of double -cylinder |
| CN107237903A (en) * | 2017-06-28 | 2017-10-10 | 盐城市大冈石油工具厂有限责任公司 | Many control flow dividers with pressure |
| CN108425821A (en) * | 2018-05-18 | 2018-08-21 | 宁波真格液压科技有限公司 | A kind of hydraulic booster pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6769884B2 (en) * | 2000-12-11 | 2004-08-03 | Cory L. Miller | Hydraulic drive system for piston pumps |
-
2019
- 2019-12-30 CN CN201911388814.6A patent/CN111005852B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001115970A (en) * | 1999-10-18 | 2001-04-27 | Chuo Koeki Kk | Liquid filling device |
| CN205154526U (en) * | 2015-11-25 | 2016-04-13 | 福建海山机械股份有限公司 | Reciprocating type high pressure water pump of double -cylinder |
| CN107237903A (en) * | 2017-06-28 | 2017-10-10 | 盐城市大冈石油工具厂有限责任公司 | Many control flow dividers with pressure |
| CN108425821A (en) * | 2018-05-18 | 2018-08-21 | 宁波真格液压科技有限公司 | A kind of hydraulic booster pump |
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| Publication number | Publication date |
|---|---|
| CN111005852A (en) | 2020-04-14 |
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Effective date of registration: 20210525 Address after: 062154 north side of Zhenggang Road, Botou Industrial Zone, Cangzhou City, Hebei Province Applicant after: HEBEI HENGSHENG PUMPS Co.,Ltd. Address before: Room 1493, 1st floor, building 041, block B, 188 Jinghua Road, high tech Zone, Ningbo, Zhejiang 315000 Applicant before: NINGBO ZHENGE HYDRAULIC TECHNOLOGY Co.,Ltd. |
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