CN212959936U - Electromagnetic/throttle valve for positive pressure explosion prevention - Google Patents
Electromagnetic/throttle valve for positive pressure explosion prevention Download PDFInfo
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- CN212959936U CN212959936U CN202021462827.1U CN202021462827U CN212959936U CN 212959936 U CN212959936 U CN 212959936U CN 202021462827 U CN202021462827 U CN 202021462827U CN 212959936 U CN212959936 U CN 212959936U
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Abstract
The utility model discloses a positive pressure explosion-proof electromagnetic/throttle valve, which comprises a main valve body with an air inlet channel and an air exhaust channel, an electromagnetic valve seat and an electromagnetic valve rod, wherein the main valve body is also provided with a valve control channel and an adjusting channel, the valve control channel is arranged between the electromagnetic valve seat and the main valve body, and the electromagnetic valve rod has a closed state and an open state relative to the main valve body; the main valve body is also fixed with a flow valve seat, and a flow valve rod which can be inserted in the flow valve seat in an adjustable way at any position along the central line direction of the flow valve seat, the adjusting flow channel is arranged between the flow valve seat and the main valve body, and the flow valve rod is controlled to ensure that the adjusting flow channel is gradually changed to be cut off or opened. When the valve is simultaneously opened with the flow valve, the valve can quickly replace gas in large flow. The solenoid valve is closed, and when only the flow valve was opened, can keep cabinet body inside to move at stable flow and pressure within range all the time, convenient to use, the operation is stable, and the installation is simple, long service life.
Description
Technical Field
The utility model relates to a malleation is explosion-proof with electromagnetism/choke valve.
Background
The positive pressure explosion-proof type is a special explosion-proof type, and the main guiding idea is to isolate the combustible substance from the ignition source to achieve the purpose of explosion-proof. The specific implementation method is that the control system in the explosion-proof control box is matched with the gas circuit system, protective gas from a safe area is introduced into the positive pressure cavity, combustible gas in the positive pressure cavity is thoroughly cleaned and ventilated, certain pressure is kept in the positive pressure cavity to stably operate, the combustible gas and conductive dust in an external dangerous environment are prevented from entering, and therefore the explosion-proof purpose is achieved. Because the protective gas continuously flows through the positive pressure cavity, the heat generated by the operation of internal elements can be taken away while the explosion-proof requirement is met, and the protective gas is more suitable for installing some electrical equipment or devices with larger heat productivity, such as a frequency converter, a soft starter, a high-power silicon controlled rectifier, a motor and the like.
In order to ensure sufficient flow and pressure in the positive pressure chamber, the leakage of the chamber needs to be compensated, and the normal operation is to control the flow of the protective gas through an electromagnetic valve. When the pressure of the positive pressure cavity is too low, an air inlet electromagnetic valve is opened to supplement air, so that the pressure is increased to be within a working pressure range; when the pressure of the positive pressure cavity is too high, the exhaust electromagnetic valve is opened to exhaust, so that the pressure is reduced to be within the working pressure range. In actual operation, the safe pressure range of the air source in the cavity is small, so that the electromagnetic valve needs to be operated frequently, and the air source can meet the pressure range within a short time after the electromagnetic valve is opened to admit air, so that the air pressure in the cavity is unstable due to the fact that the air pressure is too high or too low.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide an explosion-proof electromagnetism/choke valve of using of malleation.
In order to solve the technical problem, the utility model discloses a technical scheme is: a positive pressure explosion-proof electromagnetic/throttle valve comprises a main valve body with an inlet flow passage and an exhaust flow passage, an electromagnetic valve seat fixed on the main valve body, and an electromagnetic valve rod inserted in the electromagnetic valve seat, wherein the main valve body is also provided with a valve control flow passage for communicating the inlet flow passage and the exhaust flow passage, and an adjusting flow passage for communicating the inlet flow passage and the exhaust flow passage, the valve control flow passage is arranged between the electromagnetic valve seat and the main valve body, and the electromagnetic valve rod has a closed state for cutting off the valve control flow passage and an open state for opening the valve control flow passage relative to the main valve body; the main valve body is also fixed with a flow valve seat, and a flow valve rod which can be inserted in the flow valve seat in an adjustable way at any position along the central line direction of the flow valve seat, the adjusting flow channel is arranged between the flow valve seat and the main valve body, and the flow valve rod is controlled to move along the central line direction of the flow valve seat, so that the adjusting flow channel is gradually changed to be cut off or opened.
In some embodiments, the valve controlled flow channel includes a valve controlled main cavity, a valve controlled main cavity inlet provided on the main valve body to communicate the valve controlled main cavity with the inlet flow channel, and a valve controlled main cavity outlet provided on the main valve body to communicate the valve controlled main cavity with the exhaust flow channel, the valve controlled main cavity outlet facing the solenoid valve rod, wherein when the solenoid valve rod is in a closed state, the end of the solenoid valve rod is blocked at the valve controlled main cavity outlet, and when the solenoid valve rod is in an open state, the end of the solenoid valve rod leaves the valve controlled main cavity outlet.
In some embodiments, the end of the solenoid valve stem is provided with a sealing gasket, a sealing gasket matching ring is fixed in the main valve body, the outlet of the valve control main cavity is arranged on the sealing gasket matching ring, when the solenoid valve stem is in a closed state, the sealing gasket is blocked on the sealing gasket matching ring, and when the solenoid valve stem is in an open state, the sealing gasket is separated from the sealing gasket matching ring.
In some embodiments, the regulating flow passage is a through hole formed in the main valve body, the outer surface of the outlet portion of the regulating flow passage is matched with the outer surface of the flow valve rod, and the flow valve rod gradually covers the outlet portion of the regulating flow passage or gradually deviates from the outlet portion of the regulating flow passage in the process of controlling the flow valve rod to move along the direction of the central line of the flow valve seat.
In certain embodiments, a regulating handle is provided on the flow valve stem, a flow valve seat is sleeved on the flow valve stem and the regulating handle, and the regulating handle is in threaded engagement with the flow valve seat.
In some embodiments, a fixed air path partition is provided in the main valve body, the air path partition is provided between the air inlet channel and the air outlet channel, and the inlet of the valve-controlled main cavity and the regulating channel are located at two side portions of the air path partition.
In some embodiments, the solenoid valve seat and the flow valve seat are respectively located on two opposite sides of the main valve body, and the center line of the solenoid valve seat coincides with or is parallel to the center line of the flow valve seat.
The scope of the present invention is not limited to the technical solutions formed by specific combinations of the above technical features, and other technical solutions formed by arbitrary combinations of the above technical features or equivalent features should be covered. For example, the above features and the technical features (but not limited to) having similar functions disclosed in the present application are mutually replaced to form the technical solution.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model provides an explosion-proof electromagnetism/choke valve of using of malleation still has adjustable flow's choke valve function on the function that has conventional solenoid valve, when needs carry out thorough washing to the combustible gas in the malleation intracavity and take a breath, arrange the opening state in with the solenoid valve pole, and open the flow valve pole to setting for the position, carry out quick replacement to intracavity combustible gas, at the in-process of operation, arrange the closed condition in with the solenoid valve pole, and according to the leakage quantity in malleation chamber, adjust the position of flow valve pole, adjust its protective gas's output flow, make the malleation chamber remain throughout and move at stable pressure within range, high durability and convenient use, the operation is stable, the installation is simple, long service life.
Drawings
FIG. 1 is a state diagram of the solenoid valve and throttle valve when not open;
FIG. 2 is a state diagram of the solenoid valve and throttle valve when open;
wherein, 1, the main valve body; 2. an air inlet channel; 3 an exhaust flow passage; 4. an electromagnetic valve seat; 5. an electromagnetic valve stem; 51. a gasket; 52. a pressure equalizing groove; 53. a spring; 6. a valve-controlled flow channel; 61. valve control main cavity; 62. valve control main cavity inlet; 63. valve control main cavity outlet; 7. adjusting the flow channel; 8. a flow valve seat; 9. a flow valve stem; 91 an adjusting handle; 10. a gasket-engaging ring; 11. the gas path is cut off; 12. an air inlet; 13. an exhaust port; 14. a solenoid valve coil; 15. a wiring base of the electromagnetic valve; 16. a cable; 17. and (4) pouring a sealing gasket.
Detailed Description
As shown in the drawings, the electromagnetic/throttle valve for positive pressure explosion prevention comprises a main valve body 1 having an intake runner 2 and an exhaust runner 3, an electromagnetic valve seat 4 fixed on the main valve body 1, and an electromagnetic valve stem 5 inserted in the electromagnetic valve seat 4, wherein the main valve body 1 further has a valve control runner 6 for communicating the intake runner 2 with the exhaust runner 3, and an adjustment runner 7 for communicating the intake runner 2 with the exhaust runner 3, the valve control runner 6 is arranged between the electromagnetic valve seat 4 and the main valve body 1, and the electromagnetic valve stem 5 has a closed state for cutting off the valve control runner 6 and an open state for opening the valve control runner 6 with respect to the main valve body 1.
The main valve body 1 is also fixed with a flow valve seat 8, and a flow valve rod 9 which is inserted in the flow valve seat 8 in a way of being adjustable at any position along the central line direction of the flow valve seat 8, the adjusting flow passage 7 is arranged between the flow valve seat 8 and the main valve body 1, and the flow valve rod 9 is controlled to move along the central line direction of the flow valve seat 8, so that the adjusting flow passage 7 is gradually changed to be cut off or opened.
In this embodiment, the valve controlled flow channel 6 includes a valve controlled main cavity 61, a valve controlled main cavity inlet 62 provided on the main valve body 1 and communicating the valve controlled main cavity 61 with the intake flow channel 2, and a valve controlled main cavity outlet 63 provided on the main valve body 1 and communicating the valve controlled main cavity 61 with the exhaust flow channel 3, the valve controlled main cavity outlet 63 facing the solenoid valve rod 5, the solenoid valve rod 5 includes a sealing gasket 51 located at an end of the solenoid valve rod 5, a pressure equalizing groove 52 connected to the sealing gasket 51 and located above the same, and a spring 53 disposed in the pressure equalizing groove 52 and acting between the solenoid valve seat 4 and the solenoid valve rod 5; the main valve body 1 is internally fixed with a sealing gasket matching ring 10, the valve control main cavity outlet 63 is arranged on the sealing gasket matching ring 10, when the solenoid valve rod 5 is in a closed state, the sealing gasket 51 is blocked on the sealing gasket matching ring 10 under the elastic control of the spring 53, the gas circulation between the valve control main cavity 61 and the exhaust flow channel 3 is ensured to be blocked, and when the solenoid valve rod 5 is in an open state, the solenoid valve rod 5 overcomes the retraction of the spring 53 by the suction force given by the solenoid valve coil 14, so that the sealing gasket 51 is separated from the sealing gasket matching ring 10.
In this embodiment, the adjusting flow passage 7 is a through hole formed in the main valve body 1, the outer surface of the outlet portion of the adjusting flow passage 7 is matched with the outer surface of the flow valve rod 9, an adjusting handle 91 is arranged on the flow valve rod 9, the flow valve seat 8 is sleeved on the flow valve rod 9 and the adjusting handle 91, the adjusting handle 91 is in threaded fit with the flow valve seat 8, the flow valve rod 9 is controlled by rotating the adjusting handle 91 to move along the central line direction of the flow valve seat 8, when the flow valve rod 9 gradually covers the outlet portion of the adjusting flow passage, the gas flow rate of the adjusting flow passage 7 gradually decreases until the flow passage is closed, when the flow valve rod 9 gradually deviates from the outlet portion of the adjusting flow passage 7, the adjusting flow passage 7 is switched from the closed state.
In this embodiment, the main valve body 1 is internally structured, a fixed gas path partition 11 is arranged in the main valve body 1, the gas path partition 11 is partitioned between the inlet flow channel 2 and the exhaust flow channel 3 to block direct circulation of gas between the two flow channels, and the two sides of the gas path partition 11 are respectively provided with a valve-controlled main cavity inlet 62 and an adjusting flow channel 7.
As shown in fig. 1 and 2, in the present embodiment, the solenoid valve seat 4 and the flow valve seat 8 are respectively located at the upper portion and the lower portion of the main valve body 1, and the center line of the solenoid valve seat 4 coincides with the center line of the flow valve seat 8.
When the positive pressure control cabinet is opened to enter a ventilation state, as shown in fig. 2, the solenoid valve and the throttle valve are both in an open state, the spring 53 on the solenoid valve rod 5 is retracted by the force given by the solenoid valve coil 14, the sealing gasket 51 is separated from the sealing gasket matching ring 10, meanwhile, the flow valve rod 9 is adjusted to gradually deviate from the outlet part of the adjusting flow passage 7 through manual rotation, and the air inlet flow passage 2 is communicated with the air outlet flow passage 3 through the valve control flow passage 6 and the adjusting flow passage 7.
When the positive pressure control cabinet finishes ventilating and enters a stable operation mode, the electromagnetic valve rod 5 is in a closed state, the sealing gasket 51 is blocked on the sealing gasket matching ring 10, only the flow valve rod 9 is in an open state, the position of the flow valve rod 9 is adjusted according to the leakage amount of the flame retardant gas in the positive pressure cavity, the output amount of the flame retardant gas is adjusted, and the protective gas in the positive pressure cavity is enabled to always keep running in a stable flow and pressure range, so that the use is convenient.
The electromagnetic coil in this embodiment is similar to a commercially available electromagnetic valve, which is not the point of the invention and will not be described again.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (7)
1. The electromagnetic/throttle valve for positive pressure explosion prevention comprises a main valve body (1) with an air inlet flow passage (2) and an air exhaust flow passage (3), an electromagnetic valve seat (4) fixed on the main valve body (1), and an electromagnetic valve rod (5) inserted in the electromagnetic valve seat (4), and is characterized in that: the main valve body (1) is also provided with a valve control flow channel (6) for communicating the inlet flow channel (2) and the outlet flow channel (3) and a regulating flow channel (7) for communicating the inlet flow channel (2) and the outlet flow channel (3), the valve control flow channel (6) is arranged between the solenoid valve seat (4) and the main valve body (1), and the solenoid valve rod (5) has a closed state for cutting off the valve control flow channel (6) and an open state for opening the valve control flow channel (6) relative to the main valve body (1); the flow valve is characterized in that a flow valve seat (8) is further fixed on the main valve body (1), a flow valve rod (9) which is arranged in the flow valve seat (8) in an inserting mode can be adjusted at any position along the direction of the central line of the flow valve seat (8), the adjusting flow channel (7) is arranged between the flow valve seat (8) and the main valve body (1), the flow valve rod (9) is controlled to move along the direction of the central line of the flow valve seat (8), and therefore the adjusting flow channel (7) is gradually changed to be cut off or opened.
2. The positive pressure explosion-proof electromagnetic/throttle valve according to claim 1, characterized in that: the valve control flow channel (6) comprises a valve control main cavity (61), a valve control main cavity inlet (62) arranged on the main valve body and used for communicating the valve control main cavity (61) with the inlet flow channel (2), and a valve control main cavity outlet (63) arranged on the main valve body (1) and used for communicating the valve control main cavity (61) with the exhaust flow channel (3), wherein the valve control main cavity outlet (63) is right opposite to the electromagnetic valve rod (5), when the electromagnetic valve rod (5) is in a closed state, the end part of the electromagnetic valve rod (5) is blocked at the outlet of the valve control main cavity (61), and when the electromagnetic valve rod (5) is in an open state, the end part of the electromagnetic valve rod (5) leaves the valve control main cavity outlet (63).
3. The positive pressure explosion-proof electromagnetic/throttle valve according to claim 2, characterized in that: the tip of solenoid valve pole (5) sets up sealed pad (51), main valve body (1) internal fixation has sealed cooperation circle (10), valve accuse main cavity export (63) set up in sealed cooperation circle (10) is gone up, works as solenoid valve pole (5) are in under the closure state, sealed pad (51) are stifled sealed cooperation circle (10) are gone up, work as solenoid valve pole (5) are in under the open mode, sealed pad (51) with sealed cooperation circle (10) break away from mutually.
4. The positive pressure explosion-proof electromagnetic/throttle valve according to claim 1, characterized in that: the adjusting flow passage (7) is a through hole formed in the main valve body (1), the outer surface of an outlet portion of the adjusting flow passage (7) is matched with the outer surface of the flow valve rod (9), and in the process that the flow valve rod (9) is controlled to move along the direction of the central line of the flow valve seat (8), the outlet portion of the adjusting flow passage (7) is gradually covered by the flow valve rod (9) or gradually deviates from the outlet portion of the adjusting flow passage (7).
5. The positive pressure explosion-proof electromagnetic/throttle valve according to claim 4, characterized in that: be provided with adjustment handle (91) on flow valve rod (9), flow disk seat (8) cover is established flow valve rod (9) with on adjustment handle (91), adjustment handle (91) with flow disk seat (8) screw-thread fit.
6. The positive pressure explosion-proof electromagnetic/throttle valve according to claim 2, characterized in that: the main valve body (1) is internally provided with a fixed gas path partition (11), the gas path partition (11) is arranged between the gas inlet channel (2) and the gas exhaust channel (3), and the valve control main cavity inlet (62) and the adjusting channel (7) are positioned at two side parts of the gas path partition (11).
7. The positive pressure explosion-proof electromagnetic/throttle valve according to claim 6, characterized in that: the electromagnetic valve seat (4) and the flow valve seat (8) are respectively positioned at two opposite side parts of the main valve body (1), and the center line of the electromagnetic valve seat (4) is coincident with or parallel to the center line of the flow valve seat (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462827.1U CN212959936U (en) | 2020-07-22 | 2020-07-22 | Electromagnetic/throttle valve for positive pressure explosion prevention |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462827.1U CN212959936U (en) | 2020-07-22 | 2020-07-22 | Electromagnetic/throttle valve for positive pressure explosion prevention |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212959936U true CN212959936U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021462827.1U Active CN212959936U (en) | 2020-07-22 | 2020-07-22 | Electromagnetic/throttle valve for positive pressure explosion prevention |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212959936U (en) |
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2020
- 2020-07-22 CN CN202021462827.1U patent/CN212959936U/en active Active
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