CN207437285U - 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
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- CN207437285U CN207437285U CN201721622484.9U CN201721622484U CN207437285U CN 207437285 U CN207437285 U CN 207437285U CN 201721622484 U CN201721622484 U CN 201721622484U CN 207437285 U CN207437285 U CN 207437285U
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Abstract
The utility model is related 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 utility model 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 side 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 coordinated 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 utility model 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 utility model is related 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, including 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, needs to improve.
Utility model content
The purpose of this utility model is that a kind of pump head for plunger type metering pump with exhaust structure is provided, if the pump head
Gas is sucked during the work time, it, can be by the exhaust structure that is arranged on outlet valve without dismantling the pipeline on outlet valve
Gas is discharged, it is simple, convenient, it is time saving, laborsaving；Accordingly, the another object of the utility model is to provide a kind of band
The plunger type metering pump outlet valve of exhaust structure.
For pump head, the pump head for plunger type metering pump with exhaust structure of the utility model, including pump head body, import
Valve, outlet valve and plunger；The pump head body is internally provided with fluid course, the both ends of the fluid course liquid outlet with inlet valve respectively
It is connected with the inlet of outlet valve；The outlet valve includes the outlet valve body being spirally connected with pump head body, exports the inside of valve body
Sap cavity is formed out in hollow form, the inlet and outlet for going out sap cavity is respectively equipped with first outlet check valve and second outlet is unidirectional
Valve；The side of the outlet valve body is equipped with exhaust outlet and exhaust valve；The exhaust valve passes through with the outlet valve body
Thread connection；The exhaust valve is internally provided with exhaust passage；The exhaust valve input end be equipped with for the exhaust
The taper plug of mouth cooperation, taper plug are equipped with the venthole connected with the exhaust passage；The exhaust outlet is located at described
Between first outlet check valve and the second outlet check valve.
Compared with prior art, the utility model on the outlet valve of pump head by setting by exhaust outlet and exhaust valve structure
Into exhaust structure, when pump head sucks gas, can by unscrew with the exhaust valve that be spirally connected of outlet valve body, by gas
Body is discharged, and without dismantling the pipeline on outlet valve, overcomes the above-mentioned deficiency in the presence of the prior art, have it is easy to operate,
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 point, 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,
Pressure needed for opening every time is bigger, so as to which 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 exhaust pipe and the firmness of exhaust valve port of export cooperation.It (in exhaust process, is 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, taper plug and exhaust outlet cooperation
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 point, can not only ensure leakproofness, and convenient for 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
It is not leaked under hydraulic coupling.
For outlet valve, the plunger type metering pump outlet valve with exhaust structure of the utility model, including outlet valve valve
Body, the inside for exporting valve body form out sap cavity in hollow form, and the inlet and outlet for going out sap cavity is respectively equipped with first outlet list
To valve and second outlet check valve；The side of the outlet valve body is equipped with exhaust outlet and exhaust valve；The exhaust valve with
The outlet valve body is threaded；The exhaust valve is internally provided with exhaust passage；The exhaust valve input end
Equipped with the taper plug for coordinating with the exhaust outlet, 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.
Compared with prior art, the utility model is made of by being set on outlet valve body exhaust outlet and exhaust valve
Exhaust structure, the pipeline on outlet valve must be removed when pump head sucks gas in the prior art by, which overcoming, discharges gas
Problem, need to only rotate and export that valve body is spirally connected there is exhaust valve the mesh for discharging the gas inside pump head can be realized
, there is simple, convenient advantage.
Description of the drawings
Fig. 1 is the structure diagram of the pump head for plunger type metering pump with exhaust structure of the utility model；
Fig. 2 is the structure diagram of the plunger type metering pump outlet valve with exhaust structure of the utility model.
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 utility model；
Fig. 5 is the structure diagram of the inlet valve of the pump head for plunger type metering pump with exhaust structure of the utility model；
View when Fig. 6 is the exhaust of the pump head for plunger type metering pump with exhaust structure of the utility model.
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.
Specific embodiment
(embodiment) is further described the utility model with reference to the accompanying drawings and detailed description, but does not make
For the foundation limited the utility model.
Referring to Fig. 1 to Fig. 6, the pump head for plunger type metering pump with exhaust structure of the utility model includes pump head body 1, import
The constructions such as 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 respectively with into
The liquid outlet of mouth valve 2 is connected with the inlet of outlet valve 3；Its main feature is that：The outlet valve 3 includes going out with what pump head body 1 was spirally connected
Mouth 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 set respectively
Having first outlet check valve 33 and second outlet check valve 34, (double-valve structure advantageously ensures that leakproofness, so as to ensure that metering is accurate
Really)；The side of the outlet valve body 31 is equipped with exhaust outlet 35 and exhaust valve 36；The exhaust valve 36 and the outlet valve
Valve body 31 is threaded；The exhaust valve 36 is internally provided with exhaust passage 37；36 input end of exhaust valve is set
The taper plug 361 with the exhaust outlet 35 cooperation is useful for, taper plug 361 is equipped with what is connected with the exhaust passage 37
Venthole 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, cause first outlet check valve 33 that can not open,
Gas is detained in the fluid course 5 in pump head body 1, and then causes the first import check valve 21 that can not open, and liquid can not be inhaled
Enter, so as to which metering pump can not continue to convey liquid (working media).At this point, 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), first outlet check valve 33 is allowed 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 secured, avoid coming off, it 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 specific 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 this utility model.Experiments have shown that the pump of specific embodiment 1
The comprehensive performance of head is optimal.
It is corresponding with pump head referring to Fig. 2 to Fig. 4, the plunger type metering pump outlet valve bag with exhaust structure of the utility model
Mouthful valve body 31 is included, the inside of outlet valve body 31 forms out sap cavity 32 in hollow form, goes out the inlet and outlet of sap cavity 32
It is respectively equipped with first outlet check valve 33 and second outlet check valve 34；The side of the outlet valve body 31 is equipped with exhaust outlet 35
With exhaust valve 36；The exhaust valve 36 is threaded with the outlet valve body 31；The exhaust valve 36 it is interior
Portion is equipped with exhaust passage 37；36 input end of exhaust valve is equipped with the taper plug 361 coordinated with the exhaust outlet 35,
Taper plug 361 is equipped with the venthole 38 connected with the exhaust passage 37；The exhaust outlet 35 is located at the first outlet
Between check valve 33 and the second outlet check valve 34.
The general of the above-mentioned utility model to involved in the application is described and should to the description of its specific embodiment
It is not understood as the limitation formed to the utility model.Those skilled in the art can not disobey according to disclosure herein
On the premise of carrying on the back utility model objective, to the disclosure in above-mentioned general description or/and specific embodiment (including embodiment)
Technical characteristic is increased, reduced or is combined, 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
It is 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 (32) is respectively equipped with first outlet check valve (33) and second and goes out
Mouth check valve (34)；
The side 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) coordinated 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：The second outlet
The Opening pressure value of check valve (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 side 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 coordinated 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 |
|---|---|---|---|
| CN201721622484.9U CN207437285U (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 |
|---|---|---|---|
| CN201721622484.9U CN207437285U (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 |
|---|---|
| CN207437285U true CN207437285U (en) | 2018-06-01 |
Family
ID=62284801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721622484.9U Active CN207437285U (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) | CN207437285U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989766A (en) * | 2017-11-27 | 2018-05-04 | 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 |
-
2017
- 2017-11-27 CN CN201721622484.9U patent/CN207437285U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989766A (en) * | 2017-11-27 | 2018-05-04 | 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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