Valve element protection device of pneumatic electromagnetic valve and pneumatic electromagnetic valve

Abstract

The utility model discloses a pneumatic solenoid valve spool protection device and a pneumatic solenoid valve, and relates to the technical field of solenoid valves, the pneumatic solenoid valve spool protection device comprises a cap body and a pipe body, the cap body is provided with a cap cavity, the pipe body is provided with a first end part and a second end part which are opposite to each other along the length direction, and the pipe body is provided with a pipe cavity extending between the first end part and the second end part; the pipe body is provided with a plurality of through holes extending between the outer pipe wall and the inner pipe wall of the pipe body, the pipe body penetrates through the cap body, the first end is fixedly connected with the cap body, the outer pipe wall is spaced from the cap body, at least the through holes are located in the cap cavity, and the valve element protection device of the pneumatic electromagnetic valve forms an exhaust channel sequentially passing through the pipe cavity, the through holes and the cap cavity. The second end is used for being connected to an exhaust hole of the pneumatic electromagnetic valve, and the cap body and the pneumatic electromagnetic valve are spaced. The through hole of the pipe body is shielded through the cap body, impurities such as water and dust are effectively prevented from entering the through hole of the pipe body, and therefore the unfavorable phenomenon that the impurities such as water and dust enter the exhaust hole is improved, and normal operation of the valve element of the pneumatic electromagnetic valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a pneumatic solenoid valve core protection device and a pneumatic solenoid valve. Background Art

[0002] Pneumatic solenoid valves are a common control component widely used in industrial automation control. Pneumatic solenoid valves involve the movement of the valve core, which produces some residual gas. This residual gas needs to be discharged through the exhaust port of the pneumatic solenoid valve.

[0003] When the pneumatic solenoid valve operates in a poor environment such as a lot of water and dust, impurities such as water and dust can easily enter the pneumatic solenoid valve from the exhaust hole, causing the valve core to be stuck and the pneumatic solenoid valve to be unable to switch normally. Utility Model Content

[0004] In order to solve the above problems, the present application provides a pneumatic solenoid valve core protection device and a pneumatic solenoid valve.

[0005] The present application provides a pneumatic solenoid valve core protection device, including a cap body and a tube body, the cap body is provided with a cap cavity and an opening connected to the cap cavity, the tube body is provided with a first end and a second end opposite to each other along the length direction, the tube body is provided with a tube cavity extending between the first end and the second end, the tube body is provided with a plurality of through holes extending between the outer tube wall and the inner tube wall of the tube body, the tube body is passed through the opening, the first end is fixedly connected to the cap body, the second end is located outside the cap cavity, the outer tube wall is spaced from the cap body, and at least a plurality of through holes are located in the cap cavity, wherein the pneumatic solenoid valve core protection device forms an exhaust channel passing through the tube cavity, the through holes and the cap cavity in sequence, the second end is used to be connected to the exhaust hole of the pneumatic solenoid valve and the cap body is spaced from the pneumatic solenoid valve.

[0006] In some embodiments, the plurality of through holes are distributed in multiple circles and rows along the circumference of the tube body.

[0007] In some embodiments, the through-holes have a diameter of 0.1 mm to 1 mm.

[0008] In some embodiments, the through-holes have a diameter of 0.2 mm to 0.5 mm.

[0009] In some embodiments, the second end portion is configured to be detachably connected to an exhaust hole of the pneumatic solenoid valve.

[0010] In some embodiments, the second end portion is provided with an external thread, and the second end portion is used for being threadedly connected to an exhaust hole of the pneumatic solenoid valve.

[0011] In some embodiments, the bottom of the cap cavity wall formed by the cap body is fixedly connected to the first end.

[0012] In some embodiments, the through hole extends in a radial direction of the tube body.

[0013] In some embodiments, all of the through-holes are located within the cap cavity.

[0014] A pneumatic solenoid valve comprises a valve body and the pneumatic solenoid valve core protection device. The valve body is provided with an exhaust hole, and the second end of the tube body of the pneumatic solenoid valve core protection device is installed at the exhaust hole.

[0015] The beneficial effects of the present application are as follows: a pneumatic solenoid valve core protection device is provided, comprising a cap body and a tube body, the second end of the tube body is installed at the exhaust hole of the pneumatic solenoid valve, and an exhaust channel passing through the tube cavity, the through hole and the cap cavity in sequence is formed, the inlet of the exhaust channel is the pipe mouth of the tube cavity at the second end, the cap body is separated from the pneumatic solenoid valve, and the outlet of the exhaust channel is the gap between the cap body and the valve body shell of the pneumatic solenoid valve, when the valve core of the pneumatic solenoid valve moves, some residual gas is discharged along the exhaust channel through the exhaust hole; when the pneumatic solenoid valve core protection device is installed at the exhaust hole of the pneumatic solenoid valve, the pneumatic solenoid valve core protection device is in a vertical state, the second end of the tube body is at the lowest point, and the through hole of the tube body is blocked by the cap body, effectively preventing water, dust and other impurities from entering the through hole of the tube body, thereby improving the adverse phenomenon of water, dust and other impurities entering the exhaust hole, and ensuring the normal operation of the valve core of the pneumatic solenoid valve; in addition, the pneumatic solenoid valve core protection device of the present application also has the advantages of simple structure and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention.

[0017] Figure 1 A schematic structural diagram of a pneumatic solenoid valve core protection device provided in this application;

[0018] Figure 2 A schematic diagram of the airflow direction of a pneumatic solenoid valve core protection device during exhaust provided by this application;

[0019] Figure 3 This is a schematic diagram of a pneumatic solenoid valve core protection device provided in this application installed on the exhaust hole of the pneumatic solenoid valve.

[0020] The accompanying drawings are marked: 1-cap body, 11-cap cavity, 2-tube body, 21-first end, 22-second end, 221-external thread, 23-tube cavity, 24-through hole, 100-pneumatic solenoid valve, 110-valve body, 111-exhaust hole, 112-air inlet, 113-air outlet, 120-valve core. DETAILED DESCRIPTION

[0021] When the pneumatic solenoid valve operates in a poor environment such as a lot of water and dust, impurities such as water and dust can easily enter the pneumatic solenoid valve from the exhaust hole, causing the valve core to be stuck and the pneumatic solenoid valve to be unable to switch normally.

[0022] Pneumatic solenoid reversing valves are widely used in various control devices in steel mills, particularly in laminar cooling areas, where they control the opening and closing of valves. Because the laminar cooling area cools the rolled strip, high levels of cooling water and dust in this area can easily enter the pneumatic solenoid valve core, causing it to become stuck and preventing the cooling valve from opening and closing properly. If the laminar cooling valve fails to open and close as set, it can seriously affect laminar cooling accuracy, and thus, product quality.

[0023] In order to solve the above problems, the present application provides a pneumatic solenoid valve core protection device, hereinafter referred to as the device, please refer to Figure 1 The device includes a cap body 1 and a tube body 2. The cap body 1 is provided with a cap cavity 11. The cap cavity 11 forms an opening at one end surface of the cap body 1, and the opening is connected to the cap cavity 11. The tube body 2 is provided with a first end 21 and a second end 22 that are opposite to each other along the length direction. The tube body 2 is provided with a tube cavity 23 extending between the first end 21 and the second end 22. The tube body 2 is provided with a plurality of through holes 24 extending between the outer tube wall and the inner tube wall of the tube body 2. The tube body 2 is partially passed through the opening, the first end 21 is fixedly connected to the cap body 1, the second end is located outside the cap cavity, and the outer tube wall is spaced apart from the cap body 1. At least a plurality of through holes 24 are located within the cap cavity 11.

[0024] Please refer to Figure 2 , Figure 2 The gas flow of the exhaust channel in the device is shown. The exhaust channel passes through the tube cavity 23, the through hole 24 and the cap cavity 11 in sequence. Therefore, the inlet of the exhaust channel is the tube opening of the tube cavity 23 at the second end 22. Figure 3 The device is installed at the exhaust hole 111 of the pneumatic solenoid valve 100 and ensures that the cap body 1 is spaced from the pneumatic solenoid valve 100. The outlet of the exhaust channel is the gap between the cap body 1 and the valve body 110 shell of the pneumatic solenoid valve 100.

[0025] When the device is installed in the exhaust hole 111 of the pneumatic solenoid valve 100, Figure 3 The device shown is in a vertical state, with the second end 22 of the tube body 2 at the lowest point. When the valve core 120 of the pneumatic solenoid valve 100 moves, some residual gas enters the exhaust channel from the inlet of the exhaust channel through the exhaust hole 111. The residual gas passes through the tube cavity 23, the through hole 24 and the cap cavity 11 in turn, and the residual gas is discharged through the outlet of the exhaust channel, ensuring the exhaust function of the pneumatic solenoid valve 100.

[0026] In this device, the cap body 1 blocks the through hole 24 of the tube body 2, effectively preventing water, dust, and other impurities from entering the through hole 24 of the tube body 2. This improves the adverse phenomenon of water, dust, and other impurities entering the exhaust hole 111, ensures the normal operation of the valve core 120 of the pneumatic solenoid valve 100, and extends the service life of the pneumatic solenoid valve 100. In addition, this device has the advantages of simple structure and low manufacturing cost.

[0027] In some embodiments, multiple through holes 24 are distributed in multiple circles and multiple columns along the circumference of the tube body 2. The multiple circles and multiple columns distribution refers to a distribution form in which multiple circles are formed along the length direction of the tube body 2, and each circle has multiple through holes 24 spaced apart in sequence, which is beneficial to the uniformity of gas flow during exhaust.

[0028] The above definition states that at least a plurality of through holes 24 are located in the cap cavity 11. In some embodiments, please refer to Figure 1 , all the through holes 24 are located in the cap cavity 11 . In some embodiments, most of the through holes 24 are located in the cap cavity 11 , and a small number of the through holes 24 are located outside the cap cavity 11 .

[0029] In the related art, a muffler is often installed at the exhaust port 111 of the pneumatic solenoid valve 100 to reduce the exhaust noise during the switching operation of the pneumatic solenoid valve 100 and to isolate some dust. However, when the operating environment of the pneumatic solenoid valve 100 is poor, the muffler may become clogged within a short period of time due to the influence of impurities such as water and dust, resulting in the inability of the pneumatic solenoid valve 100 to exhaust properly and the valve core 120 to become stuck, causing the valve to be unable to switch.

[0030] To solve the above problem, in some embodiments, the aperture of the through hole 24 is limited to the range of 0.1mm-1mm. When the residual gas flows through the multiple through holes 24 of the device, part of the sound wave energy is converted into mechanical energy and dissipated, which has a silencing effect, thereby reducing the exhaust noise when the pneumatic solenoid valve 100 is switched.

[0031] In some embodiments, the aperture of the through hole 24 is limited to a range of 0.2 mm to 0.5 mm, thereby improving the effect of eliminating the exhaust noise when the pneumatic solenoid valve 100 is switched.

[0032] In some embodiments, the second end portion 22 is detachably connected to the exhaust hole 111 of the pneumatic solenoid valve 100. Through the detachable installation method, the device can be separated from the pneumatic solenoid valve 100. When the pneumatic solenoid valve 100 is replaced, the device can be disassembled and assembled, so that the device can be recycled, thereby reducing production costs.

[0033] Regarding the detachable connection between the second end portion 22 and the pneumatic solenoid valve 100, a snap connection or a screw connection can be used. Figure 1An external thread 221 is provided at the second end portion 22, and an internal thread is provided on the hole wall at the exhaust hole 111 of the pneumatic solenoid valve 100. The second end portion 22 of the tube body 2 of the device is threadedly connected to the exhaust hole 111 of the pneumatic solenoid valve 100 through the internal and external threads 221.

[0034] The above definition defines that the first end portion 21 is fixedly connected to the cap body 1. In some embodiments, please refer to Figure 1 The cap cavity 11 is formed on the cap body 1 and has a cavity wall, the bottom of which is fixedly connected to the first end portion 21. In some embodiments, please refer to Figure 1 , which can make the axial directions of the tube body 2 and the cap body 1 consistent, thereby improving the uniformity of the airflow in the exhaust channel during exhaust.

[0035] In some embodiments, see Figure 1 The cap body 1 and the tube body 2 are both cylindrical structures, and the through hole 24 extends along the radial direction of the tube body 2. At this time, the through hole is a straight hole, which improves the uniformity of the airflow in the exhaust channel during exhaust.

[0036] The present application also provides a pneumatic solenoid valve 100, comprising a valve body 110 and the above-mentioned valve core 120 protection device of the pneumatic solenoid valve 100. Figure 3 A valve core 120 is installed in the valve cavity of the valve body 110. The valve body 110 is provided with an air inlet 112, an air outlet 113, and an exhaust hole 111. By moving the valve core 120, the air inlet 112 is connected to different air outlets 113, thereby realizing valve reversal. When the valve core 120 moves, some residual gas is generated, and the residual gas needs to be discharged along the exhaust hole 111. The second end 22 of the tube body 2 of the present device is installed at the exhaust hole 111. When the valve core 120 moves, the residual gas in the valve body 110 is discharged through the exhaust channel in the present device. The through hole 24 of the tube body 2 is blocked by the cap body 1 in the present device, effectively preventing water, dust and other impurities from entering the through hole 24 of the tube body 2, thereby improving the adverse phenomenon of water, dust and other impurities entering the exhaust hole 111, ensuring the normal operation of the valve core 120 of the pneumatic solenoid valve 100, and extending the service life of the pneumatic solenoid valve 100. In addition, the present device also has the advantages of simple structure and low manufacturing cost.

[0037] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0038] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A pneumatic solenoid valve core protection device, characterized in that: include: A cap body, comprising a cap cavity and an opening connected to the cap cavity; a tube body having a first end and a second end opposite to each other in a length direction, and a tube cavity extending between the first end and the second end, the tube body having a plurality of through holes extending between an outer tube wall and an inner tube wall of the tube body, the tube body passing through the opening, the first end being fixedly connected to the cap body, the second end being located outside the cap cavity, the outer tube wall being spaced apart from the cap body, and at least a plurality of the through holes being located within the cap cavity; Wherein, the pneumatic solenoid valve core protection device forms an exhaust channel passing through the tube cavity, the through hole and the cap cavity in sequence, the second end is used to be connected to the exhaust hole of the pneumatic solenoid valve and the cap body is spaced apart from the pneumatic solenoid valve.

2. The pneumatic solenoid valve core protection device according to claim 1, characterized in that: The plurality of through holes are distributed in multiple circles and rows along the circumference of the tube body.

3. The pneumatic solenoid valve core protection device according to claim 2, characterized in that: The through hole has a diameter of 0.1 mm to 1 mm.

4. The pneumatic solenoid valve core protection device according to claim 3, characterized in that: The through hole has a diameter of 0.2 mm to 0.5 mm.

5. The pneumatic solenoid valve core protection device according to any one of claims 1 to 4, characterized in that: The second end portion is used for detachably connecting to the exhaust hole of the pneumatic solenoid valve.

6. The pneumatic solenoid valve core protection device according to claim 5, characterized in that: The second end portion is provided with an external thread, and the second end portion is used for being threadedly connected to the exhaust hole of the pneumatic solenoid valve.

7. The pneumatic solenoid valve core protection device according to any one of claims 1 to 4, characterized in that: The cap cavity is fixedly connected to the first end portion at the bottom of the cavity wall formed by the cap body.

8. The pneumatic solenoid valve core protection device according to any one of claims 1 to 4, characterized in that: The through hole extends along the radial direction of the tube body.

9. The pneumatic solenoid valve core protection device according to any one of claims 1 to 4, characterized in that: All of the through holes are located in the cap cavity.

10. A pneumatic solenoid valve, characterized in that: include: The valve body is provided with an exhaust hole; The pneumatic solenoid valve core protection device according to any one of claims 1 to 9, wherein the second end is installed at the exhaust hole.

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