CN107989766A - Pump head for plunger type metering pump and outlet valve with exhaust structure - Google Patents
Pump head for plunger type metering pump and outlet valve with exhaust structure Download PDFInfo
- Publication number
- CN107989766A CN107989766A CN201711202326.2A CN201711202326A CN107989766A CN 107989766 A CN107989766 A CN 107989766A CN 201711202326 A CN201711202326 A CN 201711202326A CN 107989766 A CN107989766 A CN 107989766A
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- Prior art keywords
- outlet
- valve
- exhaust
- check valve
- pump head
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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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- 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
- F04B53/06—Venting
-
- 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
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of pump head for plunger type metering pump with exhaust structure, the exhaust structure is arranged on outlet valve.The outlet valve of the present invention includes outlet valve body, and the inside for exporting valve body forms out sap cavity in hollow form, and the inlet and outlet for going out sap cavity is respectively equipped with first outlet check valve and second outlet check valve；The sidepiece of the outlet valve body is equipped with exhaust outlet and exhaust valve；The exhaust valve is threaded with the outlet valve body；The exhaust valve is internally provided with exhaust passage；The exhaust valve input end is equipped with the taper plug for being used for coordinating with the exhaust outlet, and taper plug is equipped with the venthole connected with the exhaust passage；The exhaust outlet is between the first outlet check valve and the second outlet check valve.When the pump head of the present invention sucks gas, without dismantling the pipeline on outlet valve, gas can be discharged by the exhaust structure on outlet valve, it is simple, convenient.
Description
Technical field
The present invention relates to plunger type metering pump, more particularly to a kind of pump head for plunger type metering pump with exhaust structure, and
A kind of plunger type metering pump outlet valve with exhaust structure.
Background technology
Working media (fluid) is directly sucked and discharged by the reciprocating motion of plunger by plunger type metering pump.Plunger type meter
Amount pump because its simple in structure and high temperature resistant, it is high pressure resistant the advantages that be widely used.
Pump head is the core component of plunger type metering pump, it includes pump head body, inlet valve, outlet valve and plunger etc. zero
Part.In existing product, if pump head sucks gas, since the compressed coefficient of gas is larger, it may appear that outlet valve can not be opened
Situation, so that transportation work medium (fluid) can not be continued.At present, when running into the above situation, those skilled in the art must
Pipeline on outlet valve must be split out, pressure release, then turn on pump discharges the gas in pump head from outlet valve, then reinstalls pipe
Road.Aforesaid operations process is time-consuming, laborious, need to improve.
The content of the invention
It is an object of the present invention to provide a kind of pump head for plunger type metering pump with exhaust structure, if the pump head is in work
Gas is sucked during work, can be by the exhaust structure that is arranged on outlet valve by gas without dismantling the pipeline on outlet valve
Body is discharged, simple, convenient, time saving, laborsaving；Accordingly, another object of the present invention is to provide a kind of band exhaust structure
Plunger type metering pump outlet valve.
For pump head, the pump head for plunger type metering pump of the invention with exhaust structure, including pump head body, inlet valve, go out
Mouth valve and plunger；The pump head body is internally provided with fluid course, and the both ends of fluid course are respectively with the liquid outlet of inlet valve and going out
The inlet connection of mouth valve；The outlet valve includes the outlet valve body being spirally connected with pump head body, during the inside for exporting valve body is in
Empty shape forms out sap cavity, and the inlet and outlet for going out sap cavity is respectively equipped with first outlet check valve and second outlet check valve；Institute
The sidepiece for stating outlet valve body is equipped with exhaust outlet and exhaust valve；The exhaust valve is joined with the outlet valve body by screw thread
Connect；The exhaust valve is internally provided with exhaust passage；The exhaust valve input end, which is equipped with, to be used to coordinate with the exhaust outlet
Taper plug, taper plug is equipped with the venthole that is connected with the exhaust passage；The exhaust outlet goes out positioned at described first
Between mouth check valve and the second outlet check valve.
Compared with prior art, the present invention is made of by being set on the outlet valve of pump head exhaust outlet and exhaust valve
Exhaust structure, when pump head sucks gas, can be arranged gas by unscrewing the exhaust valve being spirally connected with outlet valve body
Go out, without dismantling the pipeline on outlet valve, overcome the above-mentioned deficiency in the presence of the prior art, have simple, convenient
Advantage, it is not only time saving but also laborsaving.
In the foregoing pump head for plunger type metering pump with exhaust structure, the inlet valve includes the import being spirally connected with pump head body
Valve body, the inside of import valve body form admission chamber in hollow form, the inlet and outlet of admission chamber be respectively equipped with first into
Mouth check valve and the second import check valve.The characteristics of double check valve structure has good airproof performance, and the accuracy of measuring is high.
As the optimization to the foregoing pump head for plunger type metering pump with exhaust structure, the second outlet check valve is bullet
Spring type check valve；The first outlet check valve, the first import check valve and the second import check valve are gravity-type check valve；
The Opening pressure value of the second outlet check valve is more than the first outlet check valve, the first import check valve and the second import
The Opening pressure value of check valve.The design plays the role of preventing portion gas from entering the pipeline on outlet valve, so that it is guaranteed that
The accuracy of metering.
As the optimization to the foregoing pump head for plunger type metering pump with exhaust structure, the second outlet check valve is opened
Open the Opening pressure value that pressure value is the first outlet check valve 1.2~1.5 times；The first outlet check valve, first
The Opening pressure of import check valve and the second import check valve value is equal.At this time, first outlet check valve, the first import check valve
It can be realized with the second import check valve general, be conducive to control cost, and the Opening pressure value of above-mentioned first outlet check valve
It then not only ensure that measuring accuracy, but also efficiently controlled energy consumption.(the Opening pressure value of first outlet check valve is bigger, its
Pressure needed for opening every time is bigger, so that the energy of consumption is more)
As the optimization to the foregoing pump head for plunger type metering pump with exhaust structure, the second outlet check valve
Opening pressure value be 1.2 times of Opening pressure value of the first outlet check valve.
In the foregoing pump head for plunger type metering pump with exhaust structure, set on the outer surface of the exhaust valve port of export
There is one group of barb.The structure can strengthen the firmness that exhaust pipe coordinates with the exhaust valve port of export.(in exhaust process, arranging
Air valve body outlet connect an exhaust pipe, can prevent working media directly trickled down from exhaust valve on the ground or pump in itself)
In the foregoing pump head for plunger type metering pump with exhaust structure, the material of the outlet valve body is stainless steel；Institute
The material for stating exhaust valve is aluminium alloy.Stainless steel is different with plasticity with the hardness of aluminium alloy, and taper plug and exhaust outlet coordinate
When, better tightness.
As the optimization to the foregoing pump head for plunger type metering pump with exhaust structure, the conical surface of the taper plug and institute
The angle for stating the center line of exhaust outlet is 45~75 °.At this time, leakproofness can not only be ensured, and easy to manufacture.Again into one
Step, the conical surface of the taper plug and the angle of the center line of the exhaust outlet are 60 °, at this point it is possible to ensure the oil in 64MPa
Do not leaked under hydraulic coupling.
For outlet valve, the plunger type metering pump outlet valve of the invention with exhaust structure, including outlet valve body, go out
The inside of mouthful valve body forms out sap cavity in hollow form, go out sap cavity inlet and outlet be respectively equipped with first outlet check valve with
Second outlet check valve；The sidepiece of the outlet valve body is equipped with exhaust outlet and exhaust valve；The exhaust valve with it is described go out
Mouth valve body is threaded；The exhaust valve is internally provided with exhaust passage；The exhaust valve input end, which is equipped with, to be used
In the taper plug coordinated with the exhaust outlet, taper plug is equipped with the venthole connected with the exhaust passage；The row
Gas port is between the first outlet check valve and the second outlet check valve.
Compared with prior art, the present invention on outlet valve body by setting the row being made of exhaust outlet and exhaust valve
Depressed structure, the pipeline on outlet valve must be removed to discharge asking for gas when pump head sucks gas in the prior art by overcoming
Topic, need to only rotate and export the purpose that there is the exhaust valve i.e. achievable gas by inside pump head to discharge that valve body is spirally connected,
With simple, convenient advantage.
Brief description of the drawings
Fig. 1 is the structure diagram of the pump head for plunger type metering pump with exhaust structure of the present invention；
Fig. 2 is the structure diagram of the plunger type metering pump outlet valve with exhaust structure of the present invention.
Fig. 3 is the enlarged drawing of A circular portions in Fig. 2；
Fig. 4 is the structure diagram of the exhaust valve of the present invention；
Fig. 5 is the structure diagram of the inlet valve of the pump head for plunger type metering pump with exhaust structure of the present invention；
View when Fig. 6 is the exhaust of the pump head for plunger type metering pump with exhaust structure of the present invention.
Reference numeral：1- pump head bodies；2- inlet valves, 21- import valve bodies, 22- admission chambers, 23- the first import check valves,
24- the second import check valves；3- outlet valves, 31- outlets valve body, 32- go out sap cavity, 33- first outlet check valves, 34- second
Outlet check valves, 35- exhaust outlets, 36- exhaust valves, 361- taper plugs, 362- barbs, 37- exhaust passages, 38- ventholes,
39- angles；4- plungers, 5- fluid courses, 6- diversion pipes.
Embodiment
With reference to the accompanying drawings and detailed description (embodiment) the present invention is further illustrated, but be not intended as pair
The foundation that the present invention limits.
Referring to Fig. 1 to Fig. 6, the pump head for plunger type metering pump of the invention with exhaust structure include pump head body 1, inlet valve 2,
Outlet valve 3 and the grade of plunger 4 construction；The pump head body 1 is internally provided with fluid course 5, the both ends of fluid course 5 respectively with inlet valve
2 liquid outlet is connected with the inlet of outlet valve 3；Its main feature is that：The outlet valve 3 includes the outlet valve being spirally connected with pump head body 1
Valve body 31, the inside of outlet valve body 31 form out sap cavity 32 in hollow form, and the inlet and outlet for going out sap cavity 2 is respectively equipped with the
One Outlet check valves 33 and second outlet check valve 34 (double-valve structure advantageously ensures that leakproofness, so as to ensure accurate measurement)；
The sidepiece of the outlet valve body 31 is equipped with exhaust outlet 35 and exhaust valve 36；The exhaust valve 36 and the outlet valve body
31 are threaded；The exhaust valve 36 is internally provided with exhaust passage 37；36 input end of exhaust valve, which is equipped with, to be used
In the taper plug 361 coordinated with the exhaust outlet 35, taper plug 361 is equipped with the outlet connected with the exhaust passage 37
Hole 38；The exhaust outlet 35 is between the first outlet check valve 33 and the second outlet check valve 34.
When pump head sucks gas, since the compressed coefficient of gas is larger, first outlet check valve 33 is caused not open,
Gas is detained in the fluid course 5 in pump head body 1, and then causes the first import check valve 21 not open, and liquid can not be inhaled
Enter, so that metering pump can not continue to convey liquid (working media).At this time, operating personnel only need to be spirally connected with outlet valve body 31
Exhaust valve 36 unscrew (but do not depart from outlet valve body 31), 33 pressure release of first outlet check valve (is gone out in sap cavity 32 at this time
For atmospheric pressure), allow first outlet check valve 33 to be able to smooth opening, by gas from exhaust outlet 35 through venthole 38, exhaust passage
37 discharges, until last discharge liquid, then exhaust valve 36 is screwed, exhaust outlet 35 is sealed by taper plug 361.
Referring to Fig. 6, to prevent the liquid discharged from exhaust valve 36 from polluting ground and pump in itself, during exhaust, can arrange
The outlet of air valve body 36 terminates a diversion pipe 6, by liquid guide flow to liquid storage container, recycling, while avoids the production of pollution
It is raw.To make diversion pipe 6 and 36 combination of exhaust valve more firm, avoid coming off, can be in the outside of 36 port of export of exhaust valve
One group of barb 362 is set on surface.
As an optimization, referring to Fig. 5, the inlet valve 2 includes the import valve body 21 being spirally connected with pump head body 1, inlet valve valve
The inside of body 21 forms admission chamber 22 in hollow form, and the inlet and outlet of admission chamber 22 is respectively equipped with the first import check valve 23
With the second import check valve 24.Inlet valve 2 is more preferable using double check valve sealing structure, ensures accurate measurement.
Further, the second outlet check valve 34 is spring type check valve；The first outlet check valve 33, first into
Mouth 23 and second import check valve 24 of check valve is gravity-type check valve；The Opening pressure value of the second outlet check valve 34
More than the Opening pressure value of the first outlet check valve 33, the first import check valve 23 and the second import check valve 24.This sets
Meter plays the role of preventing portion gas from entering the pipeline on outlet valve, so that it is guaranteed that the accuracy of metering.
Specific embodiment 1
On the basis of above-mentioned embodiment, the material of the outlet valve body 31 is stainless steel；The air bleeding valve
The material of body 36 is aluminium alloy.The angle 39 of the conical surface of the taper plug 361 and the center line of the exhaust outlet 35 is 60 °.
The Opening pressure value of the second outlet check valve 34 is the 1.2 of the Opening pressure value of the first outlet check valve 33
Times；The Opening pressure value of the first outlet check valve 33, the first import check valve 23 and the second import check valve 24 is equal.
Specific embodiment 2
Unlike specific embodiment 1, in the present embodiment, the Opening pressure value of second outlet check valve 34 goes out for first
1.5 times of the Opening pressure value of mouth check valve 33.
Specific embodiment 3
Unlike specific embodiment 1, in the present embodiment, the Opening pressure value of second outlet check valve 34 goes out for first
1.4 times of the Opening pressure value of mouth check valve 33.
Specific embodiment 4
Unlike specific embodiment 1, in the present embodiment, the conical surface of taper plug 361 and the center line of exhaust outlet 35
Angle 39 be 45 °.
Specific embodiment 5
Unlike specific embodiment 1, in the present embodiment, the conical surface of taper plug 361 and the center line of exhaust outlet 35
Angle 39 be 75 °.
The pump head of specific embodiment 1 to 5 realizes the purpose of the present invention.Experiment shows, the pump head of specific embodiment 1
Comprehensive performance is optimal.
Corresponding with pump head referring to Fig. 2 to Fig. 4, the plunger type metering pump outlet valve of the invention with exhaust structure includes
Mouth valve body 31, the inside of outlet valve body 31 form out sap cavity 32 in hollow form, go out the inlet and outlet difference of sap cavity 32
Equipped with first outlet check valve 33 and second outlet check valve 34；The sidepiece of the outlet valve body 31 is equipped with exhaust outlet 35 and row
Air valve body 36；The exhaust valve 36 is threaded with the outlet valve body 31；The inside of the exhaust valve 36 is set
There is exhaust passage 37；36 input end of exhaust valve is equipped with the taper plug 361 for being used for coordinating with the exhaust outlet 35, taper
Plug 361 is equipped with the venthole 38 connected with the exhaust passage 37；It is unidirectional that the exhaust outlet 35 is located at the first outlet
Between valve 33 and the second outlet check valve 34.
The general description of the above-mentioned invention to involved in the application and the description to its embodiment should not be understood
For be to the invention form limitation.Those skilled in the art, can be without prejudice to invention ancestor according to disclosure herein
On the premise of purport, the public technology feature in above-mentioned general description or/and embodiment (including embodiment) is carried out
Increase, reduce or combine, and forms the technical solution belonged within the application protection domain.
Claims (10)
1. the pump head for plunger type metering pump with exhaust structure, including pump head body (1), inlet valve (2), outlet valve (3) and plunger
(4)；The pump head body (1) is internally provided with fluid course (5), the both ends of fluid course (5) liquid outlet with inlet valve (2) respectively
Connected with the inlet of outlet valve (3)；It is characterized in that：
The outlet valve (3) includes the outlet valve body (31) being spirally connected with pump head body (1), during the inside for exporting valve body (31) is in
Empty shape forms out sap cavity (32), and the inlet and outlet for going out sap cavity (2) is respectively equipped with first outlet check valve (33) and second and goes out
Mouth check valve (34)；
The sidepiece of the outlet valve body (31) is equipped with exhaust outlet (35) and exhaust valve (36)；The exhaust valve (36) and institute
Outlet valve body (31) is stated to be threaded；The exhaust valve (36) is internally provided with exhaust passage (37)；The exhaust
Valve body (36) input end is equipped with the taper plug (361) for being used for coordinating with the exhaust outlet (35), and taper plug (361) is equipped with
The venthole (38) connected with the exhaust passage (37)；
The exhaust outlet (35) is between the first outlet check valve (33) and the second outlet check valve (34).
2. the pump head for plunger type metering pump according to claim 1 with exhaust structure, it is characterised in that：The inlet valve
(2) the import valve body (21) being spirally connected with pump head body (1) is included, the inside of import valve body (21) forms admission chamber in hollow form
(22), the inlet and outlet of admission chamber (22) is respectively equipped with the first import check valve (23) and the second import check valve (24).
3. the pump head for plunger type metering pump according to claim 2 with exhaust structure, it is characterised in that：The second outlet
Check valve (34) is spring type check valve；The first outlet check valve (33), the first import check valve (23) and the second import
Check valve (24) is gravity-type check valve；The Opening pressure value of the second outlet check valve (34) is more than the first outlet
The Opening pressure value of check valve (33), the first import check valve (23) and the second import check valve (24).
4. the pump head for plunger type metering pump according to claim 3 with exhaust structure, it is characterised in that：The second outlet
The Opening pressure value of check valve (34) is 1.2~1.5 times of the Opening pressure value of the first outlet check valve (33)；Described
The Opening pressure value of one Outlet check valves (33), the first import check valve (23) and the second import check valve (24) is equal.
5. the pump head for plunger type metering pump according to claim 4 with exhaust structure, it is characterised in that：Described second
The Opening pressure value of Outlet check valves (34) is 1.2 times of the Opening pressure value of the first outlet check valve (33).
6. the pump head for plunger type metering pump according to claim 1 with exhaust structure, it is characterised in that：The exhaust valve
(36) outer surface of the port of export is equipped with one group of barb (362).
7. the pump head for plunger type metering pump according to claim 1 with exhaust structure, it is characterised in that：The outlet valve valve
The material of body (31) is stainless steel；The material of the exhaust valve (36) is aluminium alloy.
8. the pump head for plunger type metering pump according to claim 7 with exhaust structure, it is characterised in that：The taper plug
(361) angle (39) of the conical surface and the center line of the exhaust outlet (35) is 45~75 °.
9. the pump head for plunger type metering pump according to claim 8 with exhaust structure, it is characterised in that：The taper plug
(361) angle (39) of the conical surface and the center line of the exhaust outlet (35) is 60 °.
10. the plunger type metering pump outlet valve with exhaust structure, it is characterised in that：
Including outlet valve body (31), the inside of outlet valve body (31) forms out sap cavity (32) in hollow form, goes out sap cavity (32)
Inlet and outlet be respectively equipped with first outlet check valve (33) and second outlet check valve (34)；
The sidepiece of the outlet valve body (31) is equipped with exhaust outlet (35) and exhaust valve (36)；
The exhaust valve (36) is threaded with the outlet valve body (31)；The inside of the exhaust valve (36) is set
There is exhaust passage (37)；Exhaust valve (36) input end is equipped with the taper plug for being used for coordinating with the exhaust outlet (35)
(361), taper plug (361) is equipped with the venthole (38) connected with the exhaust passage (37)；
The exhaust outlet (35) is between the first outlet check valve (33) and the second outlet check valve (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202326.2A CN107989766A (en) | 2017-11-27 | 2017-11-27 | Pump head for plunger type metering pump and outlet valve with exhaust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202326.2A CN107989766A (en) | 2017-11-27 | 2017-11-27 | Pump head for plunger type metering pump and outlet valve with exhaust structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107989766A true CN107989766A (en) | 2018-05-04 |
Family
ID=62033039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711202326.2A Pending CN107989766A (en) | 2017-11-27 | 2017-11-27 | Pump head for plunger type metering pump and outlet valve with exhaust structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107989766A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454379A (en) * | 2019-09-12 | 2019-11-15 | 德帕姆(杭州)泵业科技有限公司 | Fluid end mounting structure with cleaning structure |
| CN113279954A (en) * | 2021-06-17 | 2021-08-20 | 浙江力高泵业科技有限公司 | Hydraulic pump with long service life |
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| CN207437285U (en) * | 2017-11-27 | 2018-06-01 | 浙江艾力芬特泵业科技有限公司 | Pump head for plunger type metering pump and outlet valve with exhaust structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646413Y (en) * | 2003-07-17 | 2004-10-06 | 边东福 | Accurate trace quantity metering pump |
| CN200950104Y (en) * | 2006-09-19 | 2007-09-19 | 宝山钢铁股份有限公司 | Tube blanking adapter for oil sleeve explosive experiment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454379A (en) * | 2019-09-12 | 2019-11-15 | 德帕姆(杭州)泵业科技有限公司 | Fluid end mounting structure with cleaning structure |
| CN113279954A (en) * | 2021-06-17 | 2021-08-20 | 浙江力高泵业科技有限公司 | Hydraulic pump with long service life |
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