Explosion-proof three-way pneumatic valve

Abstract

The invention relates to an anti-explosion three-way pneumatic valve, and aims to protect the three-way pneumatic valve from being operated by external explosion or flame impact. Namely, the three-way pneumatic valve according to the present invention comprises: an explosion-proof housing provided to be formed as a tube body at the upper part of an operating air control unit so as to protect a control signal line for driving the operation of a magnet from external impact and flame; the driving control board is arranged on the explosion-proof shell and is used for connecting an internal control signal line and an external control signal line; a case cover provided so as to be able to seal the upper portion of the explosion-proof case in an explosion-proof manner; the explosion-proof cable leading-out piece is arranged to form a pipe body on the side face of the explosion-proof shell so that an external control signal line can enter the explosion-proof shell; and an explosion-proof cable gland which is provided so that an explosion-proof wire tube for protecting an external control signal wire can be coupled to the explosion-proof cable lead-out member in an explosion-proof protection manner.

Description

Technical Field

[0001] This invention relates to an explosion-proof three-way pneumatic valve, and more specifically, to an explosion-proof three-way pneumatic valve that can operate without being subjected to external explosions or flame impacts. Background Technology

[0002] Typically, a three-way pneumatic valve can control the air pressure supply based on a control signal input from an external source.

[0003] The three-way pneumatic valve described above comprises the following components: a valve body having one air supply port, two air outlets, and two exhaust ports; a control valve stem configured to be coupled to the valve body and capable of controlling the air flow through the air supply port, the two air outlets, and the two exhaust ports; a drive piston body configured to generate a driving force that enables the control valve stem to move horizontally according to the user's control; a working air control unit configured to control the supply of working air for activating the piston of the drive piston body; and a drive magnet configured to generate a magnetic driving force for air control operation on the working air control unit.

[0004] In this type of three-way pneumatic valve, the drive magnet operates according to the control signal input through the control signal line, thereby activating the working air control unit, and the drive piston of the drive piston body is activated, which in turn activates the control valve stem, thereby controlling the airflow used for the operation of the equipment.

[0005] However, as mentioned above, conventional three-way pneumatic valves, due to their control signal lines being exposed to the outside, are susceptible to damage from surrounding explosions or flames, causing the three-way pneumatic valves to malfunction. Consequently, equipment that operates by controlling and supplying air through the aforementioned three-way pneumatic valves may fail to function.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 0001: Korean Patent No. 10-1239005 Summary of the Invention

[0009] Solution for solving the problem

[0010] In response, the present invention aims to solve the problem that, as described above, conventional three-way pneumatic valves are damaged by explosions or flames due to the exposed control signal lines, causing the three-way pneumatic valves to malfunction and thus preventing the operation of equipment that relies on the air controlled and supplied by the aforementioned three-way pneumatic valves.

[0011] Technical solution

[0012] That is, the three-way pneumatic valve of the present invention is characterized by comprising: a valve body having one air supply port, two air outlets, and two exhaust ports; a control valve stem configured to be coupled to the valve body and capable of controlling the air flow at the air supply port, the two air outlets, and the two exhaust ports; a drive piston body configured to generate a driving force capable of horizontally moving the control valve stem according to user control; a working air control unit configured to control the supply of working air for activating the piston of the drive piston body; a drive magnet configured to generate a magnetic driving force for air control operation on the working air control unit; and an explosion-proof housing. The explosion-proof housing includes a tube formed on the upper part of the working air control unit to protect the control signal line used to drive the magnet from external impact and flame; a drive control board mounted on the explosion-proof housing for connecting the internal control signal line and the external control signal line; a housing cover configured to provide an explosion-proof seal on the upper part of the explosion-proof housing; an explosion-proof cable lead-out member formed on the side of the explosion-proof housing to allow the external control signal line to enter the interior of the explosion-proof housing; and an explosion-proof cable gland configured to connect to the explosion-proof cable lead-out member in an explosion-proof manner to protect the external control signal line from the conduit.

[0013] Invention Effects

[0014] Therefore, the three-way pneumatic valve according to the present invention includes: an explosion-proof housing, configured as a tube on the upper part of the working air control section to protect the control signal line used to drive the magnet from external impact and flame; a drive control board, mounted on the explosion-proof housing, for connecting the internal control signal line and the external control signal line; a housing cover, configured to provide an explosion-proof seal to the upper part of the explosion-proof housing; an explosion-proof cable lead-out member, configured as a tube on the side of the explosion-proof housing to allow the external control signal line to enter the interior of the explosion-proof housing; and an explosion-proof cable gland, configured to allow the explosion-proof cable lead-out member to be connected in an explosion-proof manner to an explosion-proof conduit for protecting the external control signal line. Therefore, it has the effect of protecting the three-way pneumatic valve from external explosions or flame impacts during operation. Attached Figure Description

[0015] Figure 1 This is an exploded perspective view of the front view according to an embodiment of the present invention.

[0016] Figure 2 This is an exploded perspective view of the rear view according to an embodiment of the present invention.

[0017] Figure 3 This is an assembly perspective view according to an embodiment of the present invention.

[0018] Figure 4This is a top sectional view according to an embodiment of the present invention.

[0019] Figure 5 This is a partially enlarged cross-sectional view according to an embodiment of the present invention.

[0020] Figure 6 This is a partially enlarged cross-sectional view showing the structure of the pressure-reducing section according to an embodiment of the present invention.

[0021] Figure 7 This is a partially enlarged cross-sectional view of the explosion-proof gland head according to an embodiment of the present invention.

[0022] Figure 8 This is a partially enlarged cross-sectional view of a component with an anti-torsion member according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 110: Valve body; 120: Control valve stem

[0025] 210: Drive piston body

[0026] 220: Working air control unit; 221: Drive magnet

[0027] 230: Drive control board

[0028] 231: Internal control signal line

[0029] 232: External control signal line; 232a: Anti-twist component

[0030] 310: Explosion-proof enclosure

[0031] 320: Housing cover; 321: Explosion-proof pressure relief component

[0032] 330: Explosion-proof cable lead-out parts

[0033] 400: Explosion-proof cable gland; 410: Explosion-proof electrical conduit. Detailed Implementation

[0034] The following is a detailed explanation based on the attached diagram.

[0035] This invention can protect a three-way pneumatic valve from external explosions or flame impacts during operation. The terms or vocabulary used in this specification and claims should not be construed as limited to their ordinary or dictionary meanings, but rather as being used to best illustrate the principles of the invention in accordance with the concepts of the terms that the inventors may appropriately define. The concepts of the corresponding terms must be interpreted in a way that conforms to the technical ideas and concepts of the invention.

[0036] Therefore, the embodiments described in this specification and the structures shown in the accompanying drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Thus, it should be understood that this application may have various equivalents and modifications that can be substituted for it.

[0037] That is, the three-way pneumatic valve of the present invention includes: valve body 110, control valve stem 120, drive piston body 210, working air control unit 220, drive magnet 221, explosion-proof housing 310, drive control board 230, housing cover 320, explosion-proof cable lead-out part 330, and explosion-proof cable gland 400.

[0038] The valve body 110 is configured to have one air supply port, two air outlets and two exhaust ports.

[0039] Furthermore, the aforementioned control valve stem 120 is configured to be combined with the valve body 110 and can control the air flow of the air supply port, two air outlets, and two exhaust ports.

[0040] In addition, the aforementioned drive piston body 210 is configured to generate a driving force that enables the control valve stem 120 to move horizontally, depending on the user's control.

[0041] In addition, the aforementioned working air control unit 220 is configured to control the supply of working air for starting the piston of the drive piston body 210.

[0042] In addition, the aforementioned drive magnet 221 is configured to generate a magnetic drive force for air control operation on the working air control unit 220.

[0043] In addition, the explosion-proof housing 310 is configured to be formed as a tube on the upper part of the working air control unit 220 to protect the control signal line used to drive the magnet 221 from external impacts and flames.

[0044] In addition, the aforementioned drive control board 230 is installed in the explosion-proof housing 310 and is used to connect the internal control signal line 231 and the external control signal line 232.

[0045] In addition, the aforementioned housing cover 320 is configured to seal the upper part of the explosion-proof housing 310 in an explosion-proof manner.

[0046] An explosion-proof pressure-reducing component 321 can be provided on the inner wall of the aforementioned housing cover 320 so that the pressure inside the explosion-proof housing 310 can be buffered when the pressure rises due to external heat.

[0047] The explosion-proof pressure reducing component 321 is formed at the lower part of the housing cover 320 and consists of a pressure reducing chamber filled with nitrogen and a pressure reducing cylinder that is elastically supported by a support spring in the pressure reducing chamber and protrudes elastically.

[0048] In addition, the explosion-proof cable lead-out member 330 is configured to be formed as a tube on the side of the explosion-proof housing 310 so that the external control signal line 232 can be inserted into the interior of the explosion-proof housing 310.

[0049] In addition, the aforementioned explosion-proof cable gland 400 is configured to be combined with an explosion-proof conduit 410 for protecting the external control signal line 232 in an explosion-proof manner with the explosion-proof cable lead-out 330.

[0050] On the other hand, when implementing the present invention, an anti-twisting member 232a can be provided on the external control signal line 232 to prevent excessive twisting of the joint.

[0051] The aforementioned anti-torsion component 232a is composed of an anti-torsion spring, which is configured such that one end is connected to the end of the external control signal line 232, and the other end is connected to the inner side of the external control signal line 232.

[0052] The effects of the application of the present invention will be described below.

[0053] As described above, the three-way pneumatic valve of the present invention includes: a valve body 110, configured to have one air supply port, two air outlets, and two exhaust ports; a control valve stem 120, configured to be coupled to the valve body 110 and capable of controlling the air flow through the air supply port, the two air outlets, and the two exhaust ports; a drive piston body 210, configured to generate a driving force capable of horizontally moving the control valve stem 120 according to user control; a working air control unit 220, configured to control the supply of live working air for starting the drive piston body 210; a drive magnet 221, configured to generate a magnetic driving force for air control operation on the working air control unit 220; and an explosion-proof housing 310, configured to protect the working air control unit from air flow. The upper part of the control section 220 is formed as a tube to protect the control signal line used to drive the magnet 221 from external impacts and flames; the drive control board 230 is mounted on the explosion-proof housing 310 and is used to connect the internal control signal line 231 and the external control signal line 232; the housing cover 320 is configured to provide an explosion-proof seal to the upper part of the explosion-proof housing 310; the explosion-proof cable lead-out member 330 is formed as a tube on the side of the explosion-proof housing 310 to allow the external control signal line 232 to enter the interior of the explosion-proof housing 310; and the explosion-proof cable gland 400 is configured to connect the explosion-proof cable lead-out member 330 to the explosion-proof conduit 410 for protecting the external control signal line 232 in an explosion-proof protected manner. If the present invention is applied and implemented, the three-way pneumatic valve can be protected from external explosions or flame impacts during operation.

Claims

1. An explosion-proof three-way pneumatic valve, characterized in that, include: The valve body is configured to have one air supply port, two air outlet ports, and two exhaust ports; The control valve stem is configured to be combined with the valve body and to control the air flow of the air supply port, two air outlets and two exhaust ports; The drive piston body is configured to generate a driving force that enables the control valve rod to move horizontally according to the user's control. The working air control unit is configured to control the supply of working air for starting the piston of the drive piston body; The driving magnet is configured to generate a magnetic driving force for air control operations on the working air control unit. An explosion-proof housing is configured to be formed as a tube on the upper part of the working air control unit to protect the control signal line used to drive the magnet from external impact and flame. A drive control board is installed in the explosion-proof housing and is used to connect internal control signal lines and external control signal lines. The housing cover is configured to provide an explosion-proof seal for the upper part of the explosion-proof housing; An explosion-proof cable lead-out component is configured to be formed as a tube on the side of the explosion-proof housing so that an external control signal line can be inserted into the interior of the explosion-proof housing. as well as An explosion-proof cable gland is configured to be connected to an explosion-proof conduit for protecting external control signal lines in an explosion-proof manner at the explosion-proof cable outlet.

2. The explosion-proof three-way pneumatic valve according to claim 1, characterized in that, An explosion-proof pressure-reducing component is provided on the inner wall of the housing cover to buffer the pressure rise inside the explosion-proof housing due to external heat. The explosion-proof pressure-reducing component is formed in the lower part of the housing cover and consists of a pressure-reducing chamber filled with nitrogen and a pressure-reducing cylinder that is elastically supported by a support spring in the pressure-reducing chamber and protrudes elastically.

3. The explosion-proof three-way pneumatic valve according to claim 1, characterized in that, An anti-twisting component is installed on the external control signal line to prevent excessive twisting during connection. The anti-torsion component consists of an anti-torsion spring, which is configured such that one end is connected to the end of the external control signal line and the other end is connected to the inner side of the external control signal line.

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