Novel structure piston type electromagnetic stop valve

Abstract

The utility model relates to the technical field of piston type electromagnetic stop valves, and discloses a piston type electromagnetic stop valve with a novel structure, which comprises a valve body, a valve cover is fixedly connected onto the valve body through a bolt, a piston cylinder sleeve is fixedly connected inside the valve body, a valve clack is further fixedly connected inside the valve body, a return spring is arranged on the valve clack, and the return spring is arranged on the valve body. A bypass pipe is fixedly communicated between the inlet end of the valve body and the valve cover and between the outlet end of the valve body and the valve cover, a check valve is additionally arranged on the bypass pipe, a filter and a double-end external thread are additionally arranged on the bypass pipe on one side, a needle valve is additionally arranged on the bypass pipe on the other side, and a normally-closed electromagnetic valve and a normally-open electromagnetic valve are installed at the upper end of the valve cover and the upper end of the bypass pipe. A middle gasket is additionally arranged between the valve body and the valve deck, an O-shaped ring is arranged on the piston cylinder sleeve, and three sets of piston ring sealing rings are fixedly connected to the valve clack at equal intervals. The problems that an existing automatic valve is high in cost, large in size, complex to maintain and the like are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to piston type electromagnetic stop valve technical field especially relates to a new structure piston type electromagnetic stop valve. BACKGROUND

[0002] The piston type electromagnetic stop valve is a kind of fluid control element that the electromagnetic force generated by electromagnetic coil drives valve switch, is one of commonly used actuators in pipeline control process.Piston type electromagnetic stop valve can be divided into direct-acting type, step-by-step direct-acting type and pilot type three major categories according to principle.Due to the existing automation valve there are problems such as high cost, large size and complex maintenance, therefore, we provide a new structure piston type electromagnetic stop valve. UTILITY MODEL CONTENTS

[0003] To solve the above background art existing automation valve there are problems such as high cost, large size and complex maintenance, the utility model provides a new structure piston type electromagnetic stop valve.

[0004] The utility model discloses the following technical scheme is realized: a new structure piston type electromagnetic stop valve, including valve body, the valve body is fixedly connected with valve cover through bolt, the inside fixedly connected with piston cylinder sleeve of valve body, the inside fixedly connected with valve flap of valve body, be provided with return spring on the valve flap, the inlet end and the outlet end of valve body and valve cover are fixedly connected with bypass pipe, the check valve is additionally arranged on the bypass pipe, the filter and double-end outer silk are additionally arranged on one side bypass pipe, needle valve is additionally arranged on the other side bypass pipe, the normally closed electromagnetic valve and normally open electromagnetic valve are installed on the valve cover and bypass pipe upper end.

[0005] As the further improvement of the above scheme, the middle way gasket is additionally arranged between the valve body and the valve cover.

[0006] As the further improvement of the above scheme, the O-ring is arranged on the piston cylinder sleeve.

[0007] As the further improvement of the above scheme, three groups of piston ring sealing rings are fixedly connected on the valve flap at equal intervals, and the piston ring sealing rings are made of 304 stainless steel.

[0008] As the further improvement of the above scheme, the recess is formed in the valve flap, and the return spring is arranged in the recess.

[0009] As the further improvement of the above scheme, the normally closed electromagnetic valve and the normally open electromagnetic valve are additionally arranged on the two bypass pipes respectively.

[0010] As the further improvement of the above scheme, the piston cylinder sleeve and the valve flap are made of 304 stainless steel.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1、 The utility model discloses a piston type valve disc, and the piston type valve disc is internally provided with an initial sealing specific pressure spring, and the spring force of the initial sealing specific pressure spring acts on the valve disc to make the valve disc have good initial sealing performance.

[0013] 2、 The utility model discloses a piston type valve disc, and the piston type valve disc is internally provided with an initial sealing specific pressure spring, and the spring force of the initial sealing specific pressure spring acts on the valve disc to make the valve disc have good initial sealing performance.

[0014] 3、 The utility model discloses a piston type valve disc, and the piston type valve disc is internally provided with an initial sealing specific pressure spring, and the spring force of the initial sealing specific pressure spring acts on the valve disc to make the valve disc have good initial sealing performance.

[0015] 4、 The utility model discloses a piston type valve disc, and the piston type valve disc is internally provided with an initial sealing specific pressure spring, and the spring force of the initial sealing specific pressure spring acts on the valve disc to make the valve disc have good initial sealing performance. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is longitudinal section structure schematic view of the utility model;

[0017] Figure 2 It is Figure 1 It is the enlarged structure schematic view of A place in the middle;

[0018] Figure 3 It is the front view structure schematic view of the utility model.

[0019] MAIN SYMBOL EXPLANATION

[0020] 1、 Valve body;2、 Valve cover;3、 Piston cylinder sleeve;4、 Valve disc;5、 Backseat spring;6、 Bypass pipe;7、 Check valve;8、 Filter;9、 Double -end outer silk;10、 Needle type valve;11、 Middle way gasket;12、 O -ring;13、 Piston ring seal ring;14、 Normally closed electromagnetic valve;15、 Normally open electromagnetic valve. DETAILED DESCRIPTION

[0021] Below, combining the drawings and specific implementation, the utility model is further described, and it is explained that under the premise of not conflicting, the following described each embodiment or each technical feature can be combined to form a new embodiment.

[0022] Example 1:

[0023] Please combine Figures 1-3 The novel structure piston type electromagnetic stop valve of the embodiment comprises a valve body 1, the valve body 1 is a straight-through full-bore valve, the valve body 1 is fixedly connected with a valve cover 2 through bolts, the inside of the valve body 1 is fixedly connected with a piston cylinder sleeve 3, the inside of the valve body 1 is also fixedly connected with a valve clack 4, the valve clack 4 is provided with a return spring 5, the valve clack 4 is provided with a groove, and the return spring 5 is arranged in the inside of the groove, bypass pipes 6 are fixedly and communicatively arranged between the inlet end and the outlet end of the valve body 1 and the valve cover 2, check valves 7 are additionally arranged on the bypass pipes 6, filters 8 and double-head external threads 9 are additionally arranged on one side of the bypass pipes 6, needle valves 10 are additionally arranged on the other side of the bypass pipes 6, normally closed electromagnetic valves and normally open electromagnetic valves are mounted on the valve cover 2 and the upper end of the bypass pipes 6, a middle-way gasket 11 is additionally arranged between the valve body 1 and the valve cover 2, an O-ring 12 is arranged on the piston cylinder sleeve 3, three groups of piston ring sealing rings 13 are fixedly connected to the valve clack 4 at equal intervals, the piston ring sealing rings 13 are made of 304 stainless steel, so that the piston type valve clack 4 and the inner wall of the valve body 1 form two cavities in the upper and lower directions, normally closed electromagnetic valves 14 and normally open electromagnetic valves 15 are additionally arranged on the two bypass pipes 6, and are used for controlling the opening and closing of the valve.

[0024] The implementation principle of the novel structure piston type electromagnetic stop valve in the embodiment is as follows: medium flows into from the bypass pipes 6 and the inner flow channel of the valve body 1, the normally open electromagnetic valves 15 are closed by electricity, and the normally closed electromagnetic valves 14 are opened by electricity, medium cannot flow into the piston cavity from the bypass pipes 6 due to the closing of the normally open electromagnetic valves 15, and the medium pushes open the piston type valve clack 4 from the lower part to the upper part to open the door from the inner flow channel inlet end of the valve body 1, after the normally open electromagnetic valves 15 are opened and the normally closed electromagnetic valves 14 are closed, medium flows into the upper cavity of the piston from the inlet end bypass pipe 6, and the medium upper part is greater than the lower part due to the larger sectional area of the upper cavity than that of the lower cavity, so that the pressure difference force makes the valve close.

[0025] Embodiment 2

[0026] The further improvement of the embodiment based on the embodiment 1 is that the piston cylinder sleeve 3 and the valve clack 4 are made of 304 stainless steel, so that the structural strength and corrosion resistance are increased.

[0027] The above-mentioned embodiments are only preferred embodiments of the utility model, and cannot be used to limit the range of protection of the utility model, and any non-substantial changes and replacements made by the person skilled in the art on the basis of the utility model all belong to the range of protection required by the utility model.

Claims

1. A novel construction piston type electromagnetic shut-off valve, characterized in that, The utility model provides a valve, including valve body (1), bolt fixedly connected with valve cover (2) on valve body (1), the inside fixedly connected with piston cylinder liner (3) of valve body (1), the inside fixedly connected with valve clapper (4) of valve body (1), be provided with backseat spring (5) on valve clapper (4), the import end and the export end of valve body (1) are all fixedly connected with bypass pipe (6) between valve cover (2), the bypass pipe (6) is added with check valve (7), the bypass pipe (6) is added with filter (8) and double -end outer silk (9) on one side, the bypass pipe (6) is added with needle valve (10) on the other side, the valve cover (2) is installed with normally closed, normally open solenoid valve with bypass pipe (6) upper end.

2. A novel construction piston type electromagnetic shut-off valve as claimed in claim 1, characterized in that, The valve body (1) and the valve cover (2) are additionally provided with a middle gasket (11).

3. A novel construction piston type electromagnetic shut-off valve as claimed in claim 1, characterized in that, The piston cylinder liner (3) is provided with an O-ring (12).

4. A novel construction piston type electromagnetic shut-off valve as defined in claim 1, characterized in that, The valve clapper (4) is fixedly connected with three groups of piston ring sealing rings (13) at equal intervals, and the piston ring sealing rings (13) are made of 304 stainless steel.

5. A novel construction piston type electromagnetic shut-off valve as claimed in claim 1, characterized in that, The valve clapper (4) is provided with a groove, and the backseat spring (5) is arranged in the groove.

6. A new construction piston type electromagnetic shut-off valve according to claim 1, characterized in that, Two groups of the bypass pipes (6) are respectively provided with normally closed solenoid valves (14) and normally open solenoid valves (15).

7. A novel construction piston type electromagnetic shut-off valve as claimed in claim 1, characterized in that, The piston cylinder liner (3) and the valve clapper (4) are made of 304 stainless steel.

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