CN203099038U - Valve core provided with auxiliary air channels - Google Patents
Valve core provided with auxiliary air channels Download PDFInfo
- Publication number
- CN203099038U CN203099038U CN 201220737668 CN201220737668U CN203099038U CN 203099038 U CN203099038 U CN 203099038U CN 201220737668 CN201220737668 CN 201220737668 CN 201220737668 U CN201220737668 U CN 201220737668U CN 203099038 U CN203099038 U CN 203099038U
- Authority
- CN
- China
- Prior art keywords
- auxiliary air
- valve core
- spool
- valve
- air passage
- 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.)
- Expired - Lifetime
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Abstract
The utility model provides a valve core provided with auxiliary air channels. The valve core comprises a valve core bar and a valve sleeve which is sleeved outside the valve core bar, wherein the valve core bar is provided with a left annular groove and a right annular groove, the left auxiliary air channel and the right auxiliary air channel are installed at the left end and the right end of the valve core bar respectively, the left auxiliary air channel is communicated with an air hole in the right annular groove, and the right auxiliary air channel is communicated with another air hole in the left annular groove. According to the valve core provided with the auxiliary air channels, improvement and innovation are conducted on the basis of a common air valve, and fit clearance between a valve core and a valve sleeve of the air valve is optimized. As advanced surface treatment processes are adopted, hardness and smooth finish of the surface of the valve core are improved, accuracy of an air distribution system is improved, and the defects that a diaphragm pump easily has air leakage and cannot effectively convey liquid under high pressure are overcome.
Description
Technical field
The utility model relates to the membrane pump with pneumatic drive technical field, relates in particular to a kind of spool that has auxiliary air passage in the pneumatic separate pump that is applied in.
Background technique
Gas distribution system is the heart of a membrane pump with pneumatic drive, is the vitals that embodies whole pump work quality.The gas distribution system of membrane pump with pneumatic drive mainly comprises accessories such as air inlet end cap, pad, pilot valve assembly, air valve assembly, striker, striker O type ring, striker plastic ferrule, baffler.
Present domestic diaphragm pump ubiquity gas distribution system precision is not high, gas leakage easily under hyperbaric environment, can't effectively carry highly pressurised liquid and cause drawback problems such as working life is short because of the air valve operating frequency is high.
In addition, all be only to utilize air pressure difference to promote spool in valve pocket, to move at the air valve that uses in the art.But in such structure, have a defective, in case when promptly the position that stops of air valve just in time is in pressure reduction and is zero, when starting, be to make that air valve moves so simply by virtue of input pressurized air next time.Must promote the air valve spool by manually-operable, the slight modification spool is in the position in the valve pocket, and air valve could move.Although it is not high that generation air valve spool just in time rests on the probability of dead center position, in case such situation occurs, will be a very thing of trouble, can only just can carry out the adjustment of valve element position by the air valve shell is disassembled.
The model utility content
At there being deficiency in the prior art, the utility model provides a kind of spool with auxiliary air passage, this spool has been optimized the matching gap between the spool valve pocket of air valve, has improved the precision of gas distribution system, the defective that remedied diaphragm pump gas leakage easily under high pressure, can't effectively carry liquid.
To achieve these goals, the technology that the utility model adopts is a kind of spool with auxiliary air passage, comprise spool rod and the valve pocket that is enclosed within the valve mandrel outer, described spool rod is provided with left side annular recess and right side annular recess, the two ends place is provided with left side auxiliary air passage and right side auxiliary air passage respectively in the spool rod left and right sides, the auxiliary air passage pore interior with being arranged on the right side annular recess in described left side communicates, and the auxiliary air passage pore interior with being arranged on the left side annular recess in described right side communicates.
In the preferred embodiment that the utility model provides, wherein said spool rod is provided with annular oil circuit groove.
In the preferred embodiment that the utility model provides, the matching gap between wherein said spool rod and the valve pocket is at 12 μ m-15 μ m.
In the preferred embodiment that the utility model provides, wherein said spool face is provided with the hardening oxidation layer.
In the preferred embodiment that the utility model provides, the degree of finish of wherein said hardening oxidation layer is 0.4.
Compared with prior art, the utility model provides has the auxiliary air passage spool and has optimized matching gap between the spool valve pocket of air valve, has improved the precision of gas distribution system, has remedied diaphragm pump gas leakage easily under high pressure conditions, the defective that can't effectively carry liquid.
Description of drawings
Fig. 1 is the generalized section with auxiliary air passage spool that the utility model provides.
Fig. 2 is the generalized section of spool rod in the auxiliary air passage spool.
Embodiment
The utility model provides a kind of spool that has auxiliary air passage, this spool is to improve innovation on the basis of standard valve, optimized the matching gap between the spool valve pocket of air valve, adopt advanced process of surface treatment, its surface hardness and degree of finish are improved, also improved simultaneously the precision of gas distribution system, the defective that remedied diaphragm pump gas leakage easily under high pressure, can't effectively carry liquid.
The auxiliary air passage spool that has that the utility model is provided is described in further detail by the following examples, so that better understand the content of the invention, but embodiment's content does not limit the protection domain of the invention.
As depicted in figs. 1 and 2, the spool with auxiliary air passage that the utility model provides is made up of spool rod 10 and the valve pockets 20 that are enclosed within outside the spool rod 10.On spool rod 10, be provided with left side annular recess 231 and right side annular recess 232, the two ends place is provided with left side auxiliary air passage 201 and right side auxiliary air passage 211 respectively in spool rod 10 left and right sides, described left side auxiliary air passage 201 communicates with pore 202 in being arranged on right side annular recess 232, and described right side auxiliary air passage 211 pore 212 interior with being arranged on left side annular recess 231 communicates.
When spool rod 10 rests on dead center position (till promptly resting on the centre of valve pocket), be spool rod 10 two ends air pressure differences when being zero, pressurized air can be by being arranged on right side annular recess 232 or left side annular recess 231 places that two ends place, spool rod 10 left and right sides pore arrives spool rod 10.Structure according to gas distribution system integral body, the air pressure at two annular recess places can only have one to work (according to former dead center position in a time, just in time any one annular recess in left side annular recess 231 and the right side annular recess 232 has been sealed, and air pressure wherein is inoperative).So, when the air pressure difference at two ends is zero,, cause having the air pressure difference imbalance on the whole because have air pressure in left side annular recess 231 or the right side annular recess 232, make spool rod 10 still can in valve pocket 20, carry out side-to-side movement.
Be provided with annular oil circuit groove on spool rod 10, the oil circuit groove helps to improve the slip of spool rod 10 in valve pocket.
Matching gap between spool rod 10 and the valve pocket 20 is set in 12 μ m-15 μ m, to solve matching problem between spool rod 10 and the valve pocket 20.By surface hard oxidation processes, make spool face form the hardening oxidation layer, thereby the hardness of spool face can be promoted to 550 degree to the spool valve pocket.In addition, also will to promote be 0.4 to the degree of finish of hardening oxidation layer.
More than specific embodiment of the utility model is described in detail, but it is as example, the utility model is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that this practicality is carried out and substituting also all among category of the present utility model.Therefore, not breaking away from impartial conversion and the modification of being done under the spirit and scope of the present utility model, all should be encompassed in the scope of the present utility model.
Claims (5)
1. spool with auxiliary air passage, it is characterized in that, comprise spool rod and the valve pocket that is enclosed within the valve mandrel outer, described spool rod is provided with left side annular recess and right side annular recess, the two ends place is provided with left side auxiliary air passage and right side auxiliary air passage respectively in the spool rod left and right sides, the auxiliary air passage pore interior with being arranged on the right side annular recess in described left side communicates, and the auxiliary air passage pore interior with being arranged on the left side annular recess in described right side communicates.
2. spool according to claim 1 is characterized in that, described spool rod is provided with annular oil circuit groove.
3. spool according to claim 1 is characterized in that, the matching gap between described spool rod and the valve pocket is at 12 μ m-15 μ m.
4. spool according to claim 1 is characterized in that described spool face is provided with the hardening oxidation layer.
5. spool according to claim 4 is characterized in that, the degree of finish of described hardening oxidation layer is 0.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737668 CN203099038U (en) | 2012-12-28 | 2012-12-28 | Valve core provided with auxiliary air channels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737668 CN203099038U (en) | 2012-12-28 | 2012-12-28 | Valve core provided with auxiliary air channels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203099038U true CN203099038U (en) | 2013-07-31 |
Family
ID=48850443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220737668 Expired - Lifetime CN203099038U (en) | 2012-12-28 | 2012-12-28 | Valve core provided with auxiliary air channels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203099038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109790931A (en) * | 2016-08-31 | 2019-05-21 | 纳博特斯克有限公司 | Slide valve and valve system |
-
2012
- 2012-12-28 CN CN 201220737668 patent/CN203099038U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109790931A (en) * | 2016-08-31 | 2019-05-21 | 纳博特斯克有限公司 | Slide valve and valve system |
| CN109790931B (en) * | 2016-08-31 | 2021-02-23 | 纳博特斯克有限公司 | Slide valve and valve system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI JIYOU ELECTROMECHANICAL CO., LTD. Free format text: FORMER NAME: SHANGHAI JIYO MECHANICAL + ELECTRICAL EQUIPMENT EQUIPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 200080 Shanghai, Hongkou District, Songhua River Road, No. 2601, building A, room 506, room 1 Patentee after: SHANGHAI JIYOU M&E Co.,Ltd. Address before: 200437 room 4, building 135, No. 102, Handan Road, Shanghai, Hongkou District Patentee before: SHANGHAI JIYO M&E EQUIPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
|
| CX01 | Expiry of patent term |