CN214093245U - Pilot piston type electromagnetic valve - Google Patents
Pilot piston type electromagnetic valve Download PDFInfo
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- CN214093245U CN214093245U CN202023127943.0U CN202023127943U CN214093245U CN 214093245 U CN214093245 U CN 214093245U CN 202023127943 U CN202023127943 U CN 202023127943U CN 214093245 U CN214093245 U CN 214093245U
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Abstract
A pilot piston type electromagnetic valve comprises a valve body, a valve cover, a piston and a pilot valve, wherein a liquid outlet is arranged on the right side of a liquid inlet arranged on the left side of the valve body, a partition plate is arranged between the liquid inlet and the liquid outlet, liquid enters the valve body from the liquid inlet, the liquid needs to bypass the partition plate from a valve opening above the partition plate to reach the liquid outlet, the valve cover is arranged above the valve body and is tightly fixed on the valve body through a sealing ring, so that leakage does not occur between the valve body and the valve cover at any position between the liquid inlet and the liquid outlet, a piston ring is arranged on the piston, the piston ring is in contact with the valve cover, so that a relatively closed piston space is formed between the piston and the valve cover, a spring is arranged between the valve cover and the piston, so that the piston is pressed on the valve opening of the valve body through the spring to block liquid or gas at the liquid inlet from flowing to the liquid outlet, a throttling pipeline is arranged between the liquid inlet and the piston space, a flow discharge pipeline is arranged between the piston space and the liquid outlet, and the pilot valve opening of the flow discharge pipeline is provided with the pilot valve, the pilot valve adopts a subsection direct-acting type structure and is controlled by an electromagnet to realize the opening and closing of the pilot valve.
Description
Technical Field
The utility model belongs to the valve field, concretely relates to guide's piston solenoid valve.
Background
The existing electromagnetic valve has large volume, heavy weight, high manufacturing cost, large power consumption, small flow, non-universality of gas and liquid and water hammer phenomenon. The sealing performance between the valve body and the valve cover or other sealing structures is poor, particularly the gap sealing performance existing when the valve core moves relative to the valve body is poor, the valve core is unsafe after long use time, and leakage and maintenance are easy to occur. And the corrosion resistance of the valve body, the valve cover and the movable iron core of the common electromagnetic valve is poor, and the common electromagnetic valve cannot resist mediums such as acid and alkali.
Disclosure of Invention
To the above prior art, the utility model aims at: a pilot piston solenoid valve is provided.
The technical scheme of the utility model is realized like this: a pilot piston type electromagnetic valve comprises a valve body, a valve cover, a piston and a pilot valve, wherein a liquid outlet is arranged on the right side of a liquid inlet arranged on the left side of the valve body, a partition plate is arranged between the liquid inlet and the liquid outlet, liquid enters the valve body from the liquid inlet, the liquid needs to bypass the partition plate from a valve opening above the partition plate to reach the liquid outlet, the valve cover is arranged above the valve body and is tightly fixed on the valve body through a sealing ring, so that leakage does not occur between the valve body and the valve cover at any position between the liquid inlet and the liquid outlet, a piston ring is arranged on the piston, the piston ring is in contact with the valve cover, so that a relatively closed piston space is formed between the piston and the valve cover, a spring is arranged between the valve cover and the piston, so that the piston is pressed on the valve opening of the valve body through the spring to block liquid or gas at the liquid inlet from flowing to the liquid outlet, a throttling pipeline is arranged between the liquid inlet and the piston space, a flow discharge pipeline is arranged between the piston space and the liquid outlet, and the pilot valve opening of the flow discharge pipeline is provided with the pilot valve, the pilot valve adopts a subsection direct-acting type structure and is controlled by an electromagnet to realize the opening and closing of the pilot valve.
The electromagnetic valve has the advantages that the valve body and the valve cover can be tightly matched, the electromagnetic valve is simple and compact in overall structure, easy to machine, small in size, convenient to assemble, high in coaxiality, good in guidance quality, good in sealing performance, long in service life, simple and compact in structure, easy to machine, 1/10 larger in flow rate than a common valve, low in power consumption and convenient to assemble. The piston has good guiding performance, good sealing performance and long service life. The pilot valve adopts a step-by-step direct-acting type movable structure to act reliably, a return spring is arranged on a piston, and zero leakage of the valve can be achieved when the valve is closed in a power failure mode.
Furthermore, the piston ring is provided with the ring groove with the V-shaped section, so that the contact area between the piston ring and the valve cover is reduced, the elasticity of the piston ring can be increased, and the friction and the abrasion are reduced.
Furthermore, an elastic ring is arranged between the piston ring and the piston body, so that the piston ring has a sufficient buffering area after being extruded, and the design is adopted to prolong the service life of the piston ring.
Further, two piston rings are arranged on the piston body, and therefore the sealing performance and the reliability are improved.
Furthermore, an embedded replaceable throttling conduit is arranged in the throttling pipeline, so that the design can change the response time of the valve and adjust the state under different working pressures by adjusting the throttling conduit.
Furthermore, the replaceable embedded drainage pipe is arranged in the drainage pipeline, so that the valve response time can be changed and the state can be adjusted under different working pressures by adjusting the drainage pipe.
Furthermore, the conical shape of the opening of the drain pipe enables the opening of the drain pipe to have better sealing performance, and the design is more reliable.
Drawings
Fig. 1 is a schematic view of the overall installation of a pilot piston type solenoid valve of the present invention;
fig. 2 is the utility model discloses a guide's piston solenoid valve piston schematic diagram.
Detailed Description
As shown in fig. 1 and 2, a pilot piston type electromagnetic valve comprises a valve body 1, a valve cover 2, a piston 3 and a pilot valve 4, wherein a liquid outlet 6 is arranged on the right side of a liquid inlet 5 arranged on the left side of the valve body 1, a partition plate 7 is arranged between the liquid inlet 5 and the liquid outlet 6, so that liquid enters the valve body 1 from the liquid inlet 5 and needs to bypass the partition plate 7 from a valve opening above the partition plate 7 to reach the liquid outlet 6, the valve cover 2 is arranged above the valve body 1 and is tightly fixed on the valve body 1 through a sealing ring, so that no leakage occurs between the valve body 1 and the valve cover 2 at any position between the liquid inlet 5 and the liquid outlet 6, a piston ring 8 is arranged on the piston 3 and is in contact with the valve cover 2, so that a relatively closed piston 3 space is formed between the piston 3 and the valve cover 2, a spring is arranged between the valve cover 2 and the piston 3, so that the piston 3 is pressed on the valve opening of the valve body 1 through the spring to block the liquid or gas in the liquid inlet 5 from flowing to the liquid outlet 6, the liquid inlet 5 and the space of the piston 3 are provided with a throttling pipeline 9, a discharge pipeline 10 is arranged between the space of the piston 3 and the liquid outlet 6, a pilot valve 4 is arranged at the opening of the discharge pipeline 10, and the pilot valve 4 adopts a subsection direct-acting type structure and is controlled by an electromagnet to realize the opening and closing of the pilot valve 4. Be equipped with the ring groove that the cross-section becomes the V-arrangement on the piston ring 8 and make the piston ring 8 reduce with the area of contact of valve gap 2, be equipped with elastic ring 11 between piston ring 8 and the piston body 12 and make the piston ring 8 have sufficient buffering region after receiving the extrusion, be equipped with two piston rings 8 on the piston body 12. A replaceable embedded throttling conduit 13 is arranged in the throttling pipeline 9. A replaceable embedded drain conduit 14 is provided within the drain conduit 10. Further, the tapering of the mouth of the drain conduit 10 provides a better seal of the mouth of the drain conduit 10.
As required, detailed embodiments of the present invention are disclosed herein, but it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale and certain features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Claims (7)
1. A pilot piston type electromagnetic valve comprises a valve body (1), a valve cover (2), a piston (3) and a pilot valve (4), wherein a liquid inlet (5) is arranged on the left side of the valve body (1), a liquid outlet (6) is arranged on the right side of the valve body (1), a partition plate (7) is arranged between the liquid inlet (5) and the liquid outlet (6), so that liquid enters the valve body (1) from the liquid inlet (5) and needs to bypass the partition plate (7) from a valve opening above the partition plate (7) to reach the liquid outlet (6), the valve cover (2) is positioned above the valve body (1) and is tightly fixed on the valve body (1) through a sealing ring so that leakage does not occur between the valve body (1) and the valve cover (2) at any position between the liquid inlet (5) and the liquid outlet (6), a piston ring (8) is arranged on the piston (3) and the piston ring (8) is in contact with the valve cover (2) so that a relatively closed piston (3) space is formed between the piston (3) and the valve cover (2), the method is characterized in that: be equipped with the spring between valve gap (2) and piston (3) and make valve gap (2) press piston (3) through the spring and block liquid or the gaseous liquid outlet (6) that flow of inlet (5) on the valve mouth of valve body (1), inlet (5) and piston (3) space are equipped with throttle pipeline (9), be equipped with between piston (3) space and liquid outlet (6) and be equipped with drain pipeline (10) and be equipped with pilot valve (4) at drain pipeline (10) mouth, pilot valve (4) adopt the switching that the open and close of subsection direct action formula structure electric magnet control realization pilot valve (4).
2. The pilot piston solenoid valve according to claim 1, wherein: the piston ring (8) is provided with a ring groove with a V-shaped section, so that the contact area between the piston ring (8) and the valve cover (2) is reduced.
3. The pilot piston solenoid valve according to claim 2, wherein: an elastic ring (11) is arranged between the piston ring (8) and the piston body (12) so that the piston ring (8) has a sufficient buffer area after being extruded.
4. The pilot piston solenoid valve according to claim 3, wherein: two piston rings (8) are arranged on the piston body (12).
5. The pilot piston solenoid valve according to claim 4, wherein: an embedded replaceable throttling conduit (13) is arranged in the throttling pipeline (9).
6. The pilot piston solenoid valve according to claim 5, wherein: an embedded replaceable drainage conduit (14) is arranged in the drainage pipeline (10).
7. The pilot piston solenoid valve according to claim 6, wherein: the tapering of the opening of the drain pipe (10) provides a better sealing of the opening of the drain pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023127943.0U CN214093245U (en) | 2020-12-22 | 2020-12-22 | Pilot piston type electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023127943.0U CN214093245U (en) | 2020-12-22 | 2020-12-22 | Pilot piston type electromagnetic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214093245U true CN214093245U (en) | 2021-08-31 |
Family
ID=77431639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023127943.0U Active CN214093245U (en) | 2020-12-22 | 2020-12-22 | Pilot piston type electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214093245U (en) |
-
2020
- 2020-12-22 CN CN202023127943.0U patent/CN214093245U/en active Active
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