A quick exhaust valve with overpressure protection function

Abstract

The present invention provides a quick exhaust valve with an overpressure protection function, comprising a valve body, an inlet channel, a transition channel, and an outlet channel which are arranged in the valve body and connected in sequence for gas to pass through the valve body, and also comprising a first channel which is arranged in the valve body close to the inlet channel and vertically connected to the filter channel, a pressure sensor detects the pressure of gas when passing through the inlet channel at the inlet channel, a protection plate seals the first channel when the pressure sensor detects that the pressure of gas passing through the inlet channel is less than a predetermined value, and seals the transition channel when the pressure sensor detects that the pressure of gas passing through the inlet channel is greater than a predetermined value, and a driving device drives the protection plate to seal the first channel when the pressure sensor detects that the pressure of gas passing through the inlet channel is less than a predetermined value, and drives the protection plate to seal the transition channel when the pressure sensor detects that the pressure of gas passing through the inlet channel is greater than a predetermined value.

Description

Technical Field

[0001] The invention relates to the technical field of exhaust valves, and in particular to a quick exhaust valve with an overpressure protection function. Background Art

[0002] A quick exhaust valve is a pneumatic component used to quickly discharge pressurized gas.

[0003] The existing quick exhaust valve controls the flow of gas in the quick exhaust valve when the gas pressure is greater than or less than a preset value, and cannot play the role of overpressure protection when the gas pressure is greater than a preset value, which is not conducive to the use of the quick exhaust valve. Summary of the invention

[0004] The object of the present invention is to provide a quick exhaust valve with overpressure protection function in view of the defects and shortcomings of the prior art.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A quick exhaust valve with an overpressure protection function comprises a valve body, an inlet channel, a transition channel, and an outlet channel which are arranged in the valve body and are connected in sequence for gas to pass through the valve body, and further comprises a first channel which is arranged in the valve body near the inlet channel and vertically connected to the filter channel, a second channel which is arranged in the valve body near the outlet channel and vertically connected to the filter channel, a third channel which is arranged in the valve body and vertically connected to the first channel and the second channel, a pressure sensor which is arranged at the inlet channel and is used to detect the pressure of gas when passing through the inlet channel, and a pressure sensor which is rotatably arranged on the valve body and is located between the transition channel and the first channel and is used to seal the first channel and release the gas when the pressure sensor detects that the pressure of gas passing through the inlet channel is less than a predetermined value. A protective plate that seals the transition channel when the pressure sensor detects that the pressure of gas passing through the inlet channel is greater than a predetermined value; a driving device arranged on the valve body for driving the protective plate to seal the first channel when the pressure sensor detects that the pressure of gas passing through the inlet channel is less than a predetermined value, and driving the protective plate to seal the transition channel when the pressure sensor detects that the pressure of gas passing through the inlet channel is greater than a predetermined value; an anti-through buffer device arranged in the first channel for preventing gas from entering the first channel from the third channel when the driving device drives the protective plate to seal the first channel, and buffering the gas leading to the first channel when the driving device drives the protective plate to seal the transition channel, and allowing the buffered gas to enter the third channel.

[0007] A further improvement is that the driving device includes a rotating motor arranged in the valve body and transmission connected to the protective plate, and is used to drive the protective plate to seal the first channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is less than a predetermined value, and to drive the protective plate to seal the transition channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is greater than a predetermined value.

[0008] A further improvement is that the anti-passage buffer device includes an anti-passage buffer plate which can be raised and lowered in the first channel and is used to prevent gas from entering the first channel from the third channel when the driving device drives the protection plate to seal the first channel, and to buffer the gas leading to the first channel when the driving device drives the protection plate to seal the transition channel, and allows the buffered gas to enter the third channel, and a compression spring which is arranged in the third channel to connect the anti-passage buffer plate and the valve body and is used to cooperate with the anti-passage buffer plate.

[0009] A further improvement is that a sealing ring is arranged outside the anti-passage buffer plate to cooperate with the inner wall of the first channel when the anti-passage buffer plate is raised or lowered in the first channel.

[0010] A further improvement is that a quick-discharge device connected to the transition channel is provided on the valve body between the inlet channel and the first channel, and is used to discharge gas to the outside of the valve body during the period when the driving device drives the protective plate to seal the transition channel and the anti-passage buffer device buffers the gas leading to the first channel, so as to prevent gas with a pressure greater than a predetermined value from passing through the first channel.

[0011] A further improvement is that the quick-discharge device includes a connecting hole opened on the valve body, located between the inlet channel and the first channel and connected to the transition channel, a connecting plate arranged on the valve body and located in the connecting hole, a lower opening opened on the connecting plate, a rotating shaft rotatably arranged on the valve body and located in the connecting hole, a driving part arranged on the rotating shaft and located outside the valve body, and an upper opening opened on the rotating shaft for connecting with the lower opening when the rotating shaft rotates to a predetermined position.

[0012] A further improvement is that at least one sealing ring is provided between the valve body and the rotating shaft and in the communicating hole.

[0013] A further improvement is that the rotating shaft is connected to the valve body via a bearing.

[0014] After adopting the above technical scheme, the beneficial effects of the present invention are as follows: the pressure sensor detects the pressure of the gas when it passes through the inlet channel at the inlet channel, the protection plate seals the first channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is less than a predetermined value, and seals the transition channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is greater than a predetermined value, the driving device drives the protection plate to seal the first channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is less than a predetermined value, and drives the protection plate to seal the transition channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is greater than a predetermined value, the anti-through buffer device prevents the gas from entering the first channel from the third channel when the driving device drives the protection plate to seal the first channel, and buffers the gas leading to the first channel when the driving device drives the protection plate to seal the transition channel and allows the buffered gas to enter the third channel, when the pressure of the gas is greater than or less than a predetermined value, the direction of the gas in the quick exhaust valve can be controlled, and when the pressure of the gas is greater than a predetermined value, it can play a role of overpressure protection, which is conducive to the use of the quick exhaust valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It corresponds to Figure 1 A schematic diagram of the structure in another state;

[0018] Figure 3 It corresponds to Figure 1 Enlarged view of part A. DETAILED DESCRIPTION

[0019] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0020] See also Figures 1 to 3 As shown, the technical solution adopted in this specific implementation is:

[0021] A quick exhaust valve with an overpressure protection function, comprising a valve body 1, an inlet channel 2, a transition channel 3, and an outlet channel 4 arranged in the valve body 1 and connected in sequence for gas to pass through the valve body 1, and also comprising a first channel 5 arranged in the valve body 1 near the inlet channel 2 and vertically connected to the filter channel 3, a second channel 6 arranged in the valve body 1 near the outlet channel 4 and vertically connected to the filter channel 3, a third channel 7 arranged in the valve body 1 vertically connected to the first channel 5 and the second channel 6, a pressure sensor 8 arranged at the inlet channel 2 for detecting the pressure of gas when passing through the inlet channel 2, and a pressure sensor 8 rotatably arranged on the valve body 1 and located between the transition channel 3 and the first channel 5 for sealing the first channel when the pressure sensor 8 detects that the pressure of gas passing through the inlet channel 2 is less than a predetermined value. The invention relates to a protective plate 9 which seals the transition channel 3 when the pressure sensor 8 detects that the pressure of the gas passing through the inlet channel 2 is greater than a predetermined value, a driving device which is arranged on the valve body 1 and is used to drive the protective plate 9 to seal the first channel 5 when the pressure sensor 8 detects that the pressure of the gas passing through the inlet channel 2 is less than a predetermined value, and drives the protective plate 9 to seal the transition channel 3 when the pressure sensor 8 detects that the pressure of the gas passing through the inlet channel 2 is greater than a predetermined value, and an anti-through buffer device which is arranged in the first channel 5 and is used to prevent the gas from entering the first channel 5 from the third channel 7 when the driving device drives the protective plate 9 to seal the first channel 5, and to buffer the gas leading to the first channel 5 when the driving device drives the protective plate 9 to seal the transition channel 3, and allows the buffered gas to enter the third channel 7.

[0022] The driving device includes a rotating motor 10 which is arranged in the valve body 1 and is transmission-connected to the protective plate 9 and is used to drive the protective plate 9 to seal the first channel 5 when the pressure sensor 8 detects that the pressure of the gas passing through the inlet channel 2 is less than a predetermined value, and to drive the protective plate 9 to seal the transition channel 3 when the pressure sensor 8 detects that the pressure of the gas passing through the inlet channel 2 is greater than a predetermined value.

[0023] The anti-pass buffer device includes an anti-pass buffer plate 11 which can be raised and lowered in the first channel 5 and is used to prevent gas from entering the first channel 5 from the third channel 7 when the driving device drives the protection plate 9 to seal the first channel 5, and to buffer the gas flowing to the first channel 5 and allow the buffered gas to enter the third channel 7 when the driving device drives the protection plate 9 to seal the transition channel 3, and a compression spring 12 which is arranged in the third channel 7 and connects the anti-pass buffer plate 11 and the valve body 1 and is used to cooperate with the anti-pass buffer plate 11.

[0024] A sealing ring 13 is disposed outside the anti-passage buffer plate 12 and cooperates with the inner wall of the first channel 5 when the anti-passage buffer plate 12 is raised or lowered in the first channel 5 .

[0025] A quick-discharge device is provided on the valve body 1 between the inlet channel 2 and the first channel 5 and is connected to the transition channel 3. The quick-discharge device is used to discharge gas from the outside of the valve body 1 while the driving device drives the protection plate 9 to seal the transition channel 3 and the anti-passage buffer device buffers the gas flowing to the first channel 5, so as to prevent gas with a pressure greater than a predetermined value from passing through the first channel 5.

[0026] The quick-displacement device includes a connecting hole 14 opened on the valve body 1 and located between the inlet channel 2 and the first channel 5 and connected with the transition channel 3, a connecting plate 15 arranged on the valve body 1 and located in the connecting hole 14, a lower opening 16 opened on the connecting plate 15, a rotating shaft 17 rotatably arranged on the valve body 1 and located in the connecting hole 14, a driving part 18 arranged on the rotating shaft 17 and located outside the valve body 1, and an upper opening 19 opened on the rotating shaft 17 for communicating with the lower opening 16 when the rotating shaft 17 rotates to a predetermined position.

[0027] At least one sealing ring 20 is disposed between the valve body 1 and the rotating shaft 17 and in the communicating hole 14 .

[0028] The rotating shaft 17 is connected to the valve body 1 via a bearing 21 .

[0029] The working principle of the present invention is as follows: the pressure sensor 8 detects the pressure of the gas when it passes through the inlet channel 2 at the inlet channel 2; the protection plate 9 seals the first channel 5 when the pressure sensor 8 detects that the pressure of the gas passing through the inlet channel 2 is less than a predetermined value, and seals the transition channel 3 when the pressure sensor 8 detects that the pressure of the gas passing through the inlet channel 2 is greater than a predetermined value; the driving device drives the protection plate 9 to seal the first channel 5 when the pressure sensor 8 detects that the pressure of the gas passing through the inlet channel 2 is less than a predetermined value, and drives the protection plate 9 to seal the transition channel 3 when the pressure sensor 8 detects that the pressure of the gas passing through the inlet channel 2 is greater than a predetermined value; the anti-through buffer device prevents the gas from entering the first channel 5 from the third channel 7 when the driving device drives the protection plate 9 to seal the first channel 5, and buffers the gas leading to the first channel 5 when the driving device drives the protection plate 9 to seal the transition channel 3, and allows the buffered gas to enter the third channel 7; when the pressure of the gas is greater than or less than a predetermined value, the direction of the gas in the quick exhaust valve can be controlled, and when the pressure of the gas is greater than a predetermined value, it can play a role of overpressure protection, which is conducive to the use of the quick exhaust valve.

[0030] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A quick exhaust valve with overpressure protection function, comprising a valve body, an inlet channel, a transition channel, and an outlet channel disposed in the valve body and connected in sequence for gas to pass through the valve body, characterized in that: The valve body also includes a first channel disposed in the valve body near the inlet channel and vertically connected to the transition channel, a second channel disposed in the valve body near the outlet channel and vertically connected to the transition channel, a third channel disposed in the valve body vertically connected to the first channel and the second channel, a pressure sensor disposed at the inlet channel for detecting the pressure of gas when passing through the inlet channel, and a pressure sensor rotatably disposed on the valve body and located between the transition channel and the first channel for sealing the first channel when the pressure sensor detects that the pressure of gas passing through the inlet channel is less than a predetermined value, and sealing the first channel when the pressure sensor detects that the pressure of gas passing through the inlet channel is greater than a predetermined value. The protection plate of the transition channel, a driving device provided on the valve body for driving the protection plate to seal the first channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is less than a predetermined value, and driving the protection plate to seal the transition channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is greater than a predetermined value, and an anti-through buffer device provided in the first channel for preventing gas from entering the first channel from the third channel when the driving device drives the protection plate to seal the first channel, and buffering the gas leading to the first channel when the driving device drives the protection plate to seal the transition channel, and allowing the buffered gas to enter the third channel; The valve body is provided with a quick discharge device between the inlet channel and the first channel, which is in communication with the transition channel and is used to discharge gas from the outside of the valve body during the period when the driving device drives the protection plate to seal the transition channel and the anti-passage buffer device buffers the gas to the first channel, so as to prevent gas with a pressure greater than a predetermined value from passing through the first channel; The quick-displacement device includes a connecting hole opened on the valve body, located between the inlet channel and the first channel and connected to the transition channel, a connecting plate arranged on the valve body and located in the connecting hole, a lower opening opened on the connecting plate, a rotating shaft rotatably arranged on the valve body and located in the connecting hole, a driving part arranged on the rotating shaft and located outside the valve body, and an upper opening opened on the rotating shaft for connecting with the lower opening when the rotating shaft rotates to a predetermined position.

2. A quick exhaust valve with overpressure protection function according to claim 1, characterized in that: The driving device includes a rotating motor arranged in the valve body and transmission-connected to the protection plate, and is used to drive the protection plate to seal the first channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is less than a predetermined value, and to drive the protection plate to seal the transition channel when the pressure sensor detects that the pressure of the gas passing through the inlet channel is greater than a predetermined value.

3. The quick exhaust valve with overpressure protection function according to claim 1, characterized in that: The anti-pass buffer device includes an anti-pass buffer plate which can be raised and lowered in the first channel and is used to prevent gas from entering the first channel from the third channel when the driving device drives the protection plate to seal the first channel, and to buffer the gas flowing into the first channel and allow the buffered gas to enter the third channel when the driving device drives the protection plate to seal the transition channel, and a compression spring which is arranged in the third channel and connects the anti-pass buffer plate and the valve body and is used to cooperate with the anti-pass buffer plate.

4. A quick exhaust valve with overpressure protection function according to claim 3, characterized in that: A sealing ring is disposed outside the anti-passage buffer plate and cooperates with the inner wall of the first channel when the anti-passage buffer plate is lifted or lowered in the first channel.

5. The quick exhaust valve with overpressure protection function according to claim 1, characterized in that: At least one sealing ring is arranged between the valve body and the rotating shaft and in the communicating hole.

6. The quick exhaust valve with overpressure protection function according to claim 1, characterized in that: The rotating shaft is connected to the valve body via a bearing.

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