CN106870350A - Piston pump - Google Patents
Piston pump Download PDFInfo
- Publication number
- CN106870350A CN106870350A CN201710119877.6A CN201710119877A CN106870350A CN 106870350 A CN106870350 A CN 106870350A CN 201710119877 A CN201710119877 A CN 201710119877A CN 106870350 A CN106870350 A CN 106870350A
- Authority
- CN
- China
- Prior art keywords
- pump
- piston
- seat body
- transitional region
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F04B53/02—Packing the free space between cylinders and pistons
Abstract
The invention discloses a kind of piston pump, it includes：Piston, the transmission device being arranged in the pump seat body and the connecting rod for connecting piston and transmission device respectively that pump seat body, the two ends of pump cylinder and pump cylinder connection are located in the pump cylinder and the pump seat body respectively, at least two spaced sealing rings are provided between the piston outer wall face and the pump cylinder internal face, transitional region is formed between at least two sealing ring, the through hole and joint corresponding with the through hole connected with the transitional region are additionally provided with the piston pump.Due to gases at high pressure can be input into transitional region, the transitional region is in the piston zone of action, so that the air pressure in transitional region is more than or equal to the air pressure in the air pressure and pump seat body of remainder in pump cylinder, due to the presence of pressure differential, the oil lubricant that liquid cannot be entered in the pump seat body of piston pump or in pump seat body by pump chamber cannot enter pollution liquid in pump cylinder by pump chamber.
Description
Technical field
The present invention relates to pump, more particularly to a kind of piston pump.
Background technology
The equipment referred to as piston pump of liquid is conveyed using the reciprocating motion of piston.The operation principle of piston pump is in piston
During reciprocating motion, when piston is moved out, outlet non-return valve is closed under deadweight and differential pressure action, meanwhile, import
Non-return valve is opened in the presence of pressure difference, draws liquid into pump chamber.When piston is inwardly moved, pump cavity pressure raise, make into
Mouth non-return valve is closed, and outlet non-return valve is opened, and forces the fluid into outlet conduit.In this way, piston pump can realize the conveying of liquid.
In the prior art, piston pump needs to be lubricated in itself, the liquid that current lubricating system is conveyed usually using pump
It is lubricated or is lubricated using oil.Due to common sealing ring can not completely sealing piston and pump cylinder inwall it
Between gap, therefore, when using hydrodynamic lubrication piston pump convey, easy generation in the Machine Movement Process in piston pump
Grain pollution medium, particle contamination medium is easily accessible in pump cylinder and the liquid of pollution transportation.Equally, if using oil lubed piston
Pump, also evades pollution of the oil to conveyed liquid completely without effective ways at present.If in addition, carrying out chemical liquid using piston pump
During conveying, if without being effectively isolated, chemical liquid is also easily accessible in the pump seat body of piston pump, and the mechanical organ in pump seat body is made
Into infringement.
The content of the invention
The invention aims to solve the above problems, there is provided a kind of piston pump, for avoiding the particle in pump seat body
Pollution medium or lubricating oil enter pollution transportation liquid in pump cylinder, and for avoiding conveying liquid from entering in pump seat body to pump seat
Internal mechanical organ causes damage.
To achieve the above object, the present invention provides a kind of piston pump, and it includes：What pump cylinder and the pump cylinder were connected
Piston that pump seat body, two ends are located in the pump cylinder and the pump seat body respectively, the transmission dress being arranged in the pump seat body
The connecting rod of piston and transmission device is put and connected respectively, is provided between the piston outer wall face and the pump cylinder internal face mutually
Interval at least two sealing rings, transitional region is formed between at least two sealing ring, be additionally provided with the pump cylinder with
The through hole and joint corresponding with the through hole of the transitional region connection, the transitional region is in the piston zone of action
Interior, the gas pressure of the transitional region is more than or equal in the gas pressure and pump seat body of remainder in the pump cylinder
Gas pressure.
Further, the piston pump also includes the import non-return valve, outlet non-return valve, the liquid that are connected with the pump cylinder
Inlet pipeline, liquid outlet conduit, the import non-return valve are corresponding with the fluid inlet line, the outlet non-return valve and institute
State liquid outlet conduit correspondence.
Further, the pressure of the gas is 1~7 kilogram.
Further, the sealing ring number is 2.
Further, the sealing ring is O-ring seal.
Further, the material of the sealing ring is ethylene propylene diene rubber or fluorine-containing rubber.
Further, the distance between described sealing ring is 5cm~10cm.
Compared with prior art, due to the pump cylinder internal face of piston pump and piston outer wall face, to be provided with least two mutual
Every sealing ring, transitional region is formed between at least two sealing rings, and through hole and erection joint are opened up on pump cylinder, such as
This, can be input into gases at high pressure in transitional region, the transitional region is in the piston zone of action so that in transitional region
Air pressure more than or equal to the air pressure in the air pressure and pump seat body of remainder in pump cylinder, due to the presence of pressure differential, liquid
The oil lubricant that cannot be entered in the pump seat body of piston pump or in pump seat body by pump chamber cannot enter pump cylinder by pump chamber
Interior pollution liquid.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes a part of the invention, this hair
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
A kind of schematic diagram of piston pump that Fig. 1 is provided for the preferred embodiment of the present invention.
Fig. 2 is the enlarged drawing of shown a-quadrant in Fig. 1.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Corresponding accompanying drawing is clearly and completely described to technical solution of the present invention.Obviously, described embodiment is only the present invention one
Section Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.
As shown in Figure 1 to Figure 2, the preferred embodiment of the present invention provides a kind of piston pump 100, and it includes pump cylinder 1, piston
2nd, import non-return valve 3, outlet non-return valve 4, fluid inlet line 5, liquid outlet conduit 6, connecting rod 7, transmission device 8 and pump seat body
9。
Specifically, connecting rod 7 and transmission device 8 are located in the pump seat body 9 of piston pump 100, one end of piston 2 extends into pump seat
It is connected with connecting rod 7 in body 9.Wherein, connecting rod 7 is referred to as piston rod, and connecting rod 7 is connected with transmission device 8, transmission device 8 with
Outside drive device (such as motor) connection.External driver device can drive transmission device 8 to move, and transmission device 8 drives and connects
Bar 7 is moved, and connecting rod 7 carries out reciprocal linear motion with piston 2.In the present embodiment, transmission device 8 can be crank knot
Structure, outside drive device can drive crank along the circumferential direction to rotate.It should be noted that the other end of piston 2 is extended into
In pump cylinder 1, pump chamber 11 is provided with pump cylinder 1, the other end of piston 2 is extended into pump chamber 11.
Further, import non-return valve 3, outlet non-return valve 4, fluid inlet line 5, liquid outlet conduit 6 are connected to pump
On cylinder body 1.Wherein, import non-return valve 3 is corresponding with fluid inlet line 5, and outlet non-return valve 4 is corresponding with liquid outlet conduit 6.
During piston 2 is moved back and forth, when piston 2 moves right (i.e. inwardly motion), outlet non-return valve 4 is made in deadweight and pressure difference
Lower closing is used, import non-return valve 3 is opened in the presence of pressure difference, liquid is sucked in pump chamber 11 by fluid inlet line 5.Work as work
When plug 2 is to left movement (moving out), pressure rise in pump chamber 11 closes import non-return valve 3, and outlet non-return valve 4 is opened,
Liquid is pressed into liquid outlet conduit 6.
In order to prevent liquid interior into the pump seat body 9 of piston pump 100 by pump chamber 11 or prevent glossy in pump seat body 9
Lubrication prescription enters pollution liquid in pump cylinder 1 by pump chamber 11, and the piston pump 100 that the present invention is provided also includes being arranged at pump cylinder 1
Internal face and the outside wall surface of piston 2 at least two sealing rings 12, at least two sealing rings 12 be used for the outside wall surface of sealing piston 2 with
Space between the internal face of pump cylinder 1.In the present embodiment, the number of at least two sealing rings 12 is two, two sealing rings
Form transitional region 13 between 12, the material of sealing ring is ethylene propylene diene rubber or fluorine-containing rubber, the distance between sealing ring
It is 5cm, 6cm, 7cm, 8cm, 9cm, 10cm.In addition, in the present embodiment, sealing ring 12 is preferably O-ring seal.However, should
Work as understanding, the material of sealing ring 12 can be also made of the other materials in addition to EPDM and TEV, or using other shapes
Sealing ring, also or using the distance between other sealing rings, as long as sealing characteristics can be realized so that the gas of transitional region
, more than or equal to the gas pressure in the gas pressure and pump seat body of remainder in pump cylinder, the present invention is to sealing for pressure
The distance between 12 specific material, shape and sealing ring is enclosed not limit equally.Meanwhile, on the pump cylinder 1 of piston pump 100
It is also equipped with being passed through the through hole 14 of pressurize gas and is installed on joint 15 corresponding with through hole 14 on pump cylinder 1, by joint
15 can connect extraneous gas.By through hole 14 and joint 15 can to input pressure in transitional region 13 be 1~7kgf (kilogram
Power) gas.So, the air pressure in transitional region 13 is all higher than the air pressure in pump cylinder 1 and pump seat body 9, in this way, due to pressure
The presence of power difference, liquid cannot enter the oil lubricant in the pump seat body 9 of piston pump 100 or in pump seat body 9 by pump chamber 11
Pollution liquid in pump cylinder 1 cannot be entered by pump chamber 11.
In sum, due to the internal face of pump cylinder 1 and the outside wall surface of piston 2 of piston pump 100 be provided with two it is spaced
Sealing ring 12, forms transitional region 13 between two sealing rings, and through hole 14 and erection joint 15 are opened up on pump cylinder 1, such as
This, 13 can be passed through gases at high pressure in transitional region so that the air pressure in transitional region 13 is more than or equal to remaining in pump cylinder 1
Air pressure in partial air pressure and pump seat body 9, due to the presence of pressure differential, liquid cannot enter piston pump 100 by pump chamber 11
Pump seat body 9 in or pump seat body 9 in oil lubricant cannot by pump chamber 11 enter pump cylinder 1 in pollution liquid, reach
It is effectively isolated the purpose of pump cylinder 1 and pump seat body 9.
Above-described instantiation, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Illustrate, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc. should be included in protection of the invention
Within the scope of.
Claims (7)
1. a kind of piston pump, it includes：Pump seat body, the two ends of pump cylinder and pump cylinder connection are located at the pumping cylinder respectively
Piston in body and the pump seat body, the transmission device being arranged in the pump seat body and connection piston and transmission device respectively
Connecting rod, it is characterised in that：It is close spaced at least two to be provided between the piston outer wall face and the pump cylinder internal face
Seal, forms transitional region between at least two sealing ring, be additionally provided with the pump cylinder and connected with the transitional region
Through hole and joint corresponding with the through hole, the transitional region in the piston zone of action, the transitional region
Gas pressure is more than or equal to the gas pressure in the gas pressure and pump seat body of remainder in the pump cylinder.
2. piston pump according to claim 1, it is characterised in that the piston pump also includes what is be connected with the pump cylinder
Import non-return valve, outlet non-return valve, fluid inlet line, liquid outlet conduit, the import non-return valve and the liquid-inlet
Pipeline correspondence, the outlet non-return valve is corresponding with the liquid outlet conduit.
3. the piston pump according to claim any one of 1-2, it is characterised in that the pressure of the gas is 1~7 kilogram
Power.
4. the piston pump according to claim any one of 1-2, it is characterised in that the sealing ring number is 2.
5. the piston pump according to claim any one of 1-2, it is characterised in that the sealing ring is O-ring seal.
6. the piston pump according to claim any one of 1-2, it is characterised in that the material of the sealing ring is EPDM
Rubber or fluorine-containing rubber.
7. the piston pump according to claim any one of 1-2, it is characterised in that the distance between described sealing ring is 5cm
~10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710119877.6A CN106870350A (en) | 2017-03-01 | 2017-03-01 | Piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710119877.6A CN106870350A (en) | 2017-03-01 | 2017-03-01 | Piston pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106870350A true CN106870350A (en) | 2017-06-20 |
Family
ID=59168576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710119877.6A Pending CN106870350A (en) | 2017-03-01 | 2017-03-01 | Piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870350A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107618885A (en) * | 2017-10-23 | 2018-01-23 | 中国石油化工股份有限公司中原油田分公司石油工程技术研究院 | The conveying device and carrying method of granular material |
| CN111219885A (en) * | 2020-01-19 | 2020-06-02 | 侯中泽 | Fluid piston heat source pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2245693Y (en) * | 1995-10-10 | 1997-01-22 | 向可为 | Pressure balance shaft gland |
| DE10257644B4 (en) * | 2002-05-28 | 2005-08-11 | Mitsubishi Denki K.K. | Hochdruckkraftstoffzuführvorrichtung |
| CN2727508Y (en) * | 2004-08-30 | 2005-09-21 | 邢台钢铁有限责任公司 | Gas fan sealing device |
| CN201434078Y (en) * | 2009-05-26 | 2010-03-31 | 山西太钢不锈钢股份有限公司 | Shaft sealing device |
| CN201621285U (en) * | 2010-03-10 | 2010-11-03 | 楼生友 | Sealed rotating shaft |
| CN204140373U (en) * | 2014-09-30 | 2015-02-04 | 北京众博达石油科技有限公司 | A kind of sealing configuration of plunger pump |
| CN204458317U (en) * | 2015-03-12 | 2015-07-08 | 中国石油大学(华东) | A kind of horizontal single-cylinder single-action reciprocating reciprocating pump |
-
2017
- 2017-03-01 CN CN201710119877.6A patent/CN106870350A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2245693Y (en) * | 1995-10-10 | 1997-01-22 | 向可为 | Pressure balance shaft gland |
| DE10257644B4 (en) * | 2002-05-28 | 2005-08-11 | Mitsubishi Denki K.K. | Hochdruckkraftstoffzuführvorrichtung |
| CN2727508Y (en) * | 2004-08-30 | 2005-09-21 | 邢台钢铁有限责任公司 | Gas fan sealing device |
| CN201434078Y (en) * | 2009-05-26 | 2010-03-31 | 山西太钢不锈钢股份有限公司 | Shaft sealing device |
| CN201621285U (en) * | 2010-03-10 | 2010-11-03 | 楼生友 | Sealed rotating shaft |
| CN204140373U (en) * | 2014-09-30 | 2015-02-04 | 北京众博达石油科技有限公司 | A kind of sealing configuration of plunger pump |
| CN204458317U (en) * | 2015-03-12 | 2015-07-08 | 中国石油大学(华东) | A kind of horizontal single-cylinder single-action reciprocating reciprocating pump |
Non-Patent Citations (2)
| Title |
|---|
| 李永河: "《橡胶硫化技术》", 31 May 2012, 黄河水利出版社 * |
| 李贤燊: "《液压传动与控制》", 31 December 1993, 重庆大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107618885A (en) * | 2017-10-23 | 2018-01-23 | 中国石油化工股份有限公司中原油田分公司石油工程技术研究院 | The conveying device and carrying method of granular material |
| CN111219885A (en) * | 2020-01-19 | 2020-06-02 | 侯中泽 | Fluid piston heat source pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |