Gas emergency cut-off valve with non-return function

Abstract

The invention relates to the technical field of emergency cut-off valves, in particular to a gas emergency cut-off valve with a non-return function, which comprises a valve main body, an access pipe and a lead-out connecting pipe, the access pipe and the lead-out connecting pipe are fixedly mounted on two sides of the valve main body respectively, and the gas emergency cut-off valve further comprises a regulation and control assembly; the regulation and control assembly comprises a mounting frame, a fixed joint, an insertion sleeve, an introduction cylinder, a negative pressure suction component and a rotation control component; the mounting frame is arranged on the valve body main body, the fixed joint is fixedly mounted in the mounting frame, the inserting sleeve is fixedly mounted on one side, close to the valve body main body, of the mounting frame, the leading-in cylinder is rotationally connected with the fixed joint, the negative pressure suction component is connected with the fixed joint, and the rotation control component is connected with the mounting frame; according to the emergency cut-off device, fuel gas left in the pipeline can be recycled after emergency cut-off is completed through arranged components, further leakage and diffusion of the fuel gas are avoided, resource waste is avoided, and meanwhile the situation that follow-up fuel gas leakage causes advanced harm to the external environment is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of emergency shut-off valves, and in particular to a gas emergency shut-off valve with a check function. Background Art

[0002] The gas emergency shut-off valve is a safety device used in gas pipeline systems. It can quickly cut off the gas supply when an emergency such as gas leakage, abnormal pressure, or fire is detected to prevent the accident from escalating and ensure the safety of people and property.

[0003] Most existing gas emergency shut-off valves need to be operated in conjunction with gas leak alarms, pressure sensors, temperature sensors and other monitoring instruments, so that when a gas leak is detected, the control template set inside the valve body can respond in time to avoid continuous gas leakage;

[0004] However, after the existing gas emergency shut-off valve is completed, the original transmission pipeline is still filled with gas. Since this gas cannot be collected, the remaining gas will continue to leak and spread. This will not only lead to an unnecessary waste of resources, but also cause the gas concentration in the external environment to further increase, thereby posing a greater safety hazard. Summary of the Invention

[0005] The purpose of the present invention is to provide a gas emergency shut-off valve with a non-return function, which can recover the gas retained in the pipeline through the provided components after completing the emergency shut-off, thereby avoiding further leakage and diffusion of the gas, thereby avoiding waste of resources and preventing subsequent gas leakage from causing further harm to the external environment.

[0006] To achieve the above-mentioned object, the present invention provides a gas emergency shut-off valve with a check function, comprising a valve body, an inlet pipe and an outlet pipe, wherein the inlet pipe and the outlet pipe are respectively fixedly mounted on both sides of the valve body, and further comprising a regulating assembly;

[0007] The regulating assembly includes a mounting frame, a fixed joint, a plug sleeve, an introduction tube, a negative pressure suction component and a rotation control component;

[0008] The mounting frame is arranged on the valve body, the fixed joint is fixedly installed in the mounting frame, the plug sleeve is fixedly installed on the side of the mounting frame close to the valve body, the introduction cylinder is rotatably connected to the fixed joint and is arranged in the plug sleeve, the negative pressure suction component is connected to the fixed joint, and is used to attract excess gas after cut-off, and the rotation control component is connected to the mounting frame, and is used to complete the cut-off control of the valve body.

[0009] Among them, the negative pressure suction component includes a one-way valve, a negative pressure cylinder and a connecting joint, the one-way valve is connected to the fixed joint and installed in the mounting frame; the negative pressure cylinder is connected to the one-way valve and installed on one side of the mounting frame; the connecting joint is installed on the negative pressure cylinder.

[0010] In which, the rotation control component includes an assembly frame, a valve core, a main control component and a linkage component. The assembly frame is fixedly installed on the side of the mounting frame close to the valve body; the valve core is rotatably installed in the assembly frame; the main control component is connected to the mounting frame for driving the valve core; the linkage component is connected to the introduction cylinder for driving the introduction cylinder.

[0011] Among them, the main control component includes an outer sleeve gear, a driving gear shaft and a driving motor, the outer sleeve gear is fixedly mounted on the valve core; the gear set on the driving gear shaft is engaged with the outer sleeve gear; the output shaft of the driving motor is connected to the driving gear shaft, and the driving motor is fixedly installed in the mounting frame.

[0012] In which, the linkage component includes a sleeve gear, a driving gear rack, a sliding plate and an extrusion spring, the sleeve gear is fixedly sleeved on the introduction cylinder; the driving gear rack is engaged with the sleeve gear rack and is slidably installed in the mounting frame; the sliding plate is fixedly connected to the driving gear rack and is slidably installed in the mounting frame; the two sides of the extrusion spring are respectively connected to the sliding plate and the mounting frame.

[0013] Among them, the linkage component also includes a linkage gear rack and an abutment plate, the linkage gear rack is engaged with the gear of the driving gear shaft and is slidably installed in the mounting frame; the abutment plate is fixedly connected to the linkage gear rack and is slidably installed on the side of the mounting frame close to the sliding plate.

[0014] In which, the rotation control component also includes a moving-in buckle frame, a reset spring, a rotating lever and a toggle plate. The moving-in buckle frame is slidably installed on the side of the mounting frame close to the sliding plate; the two sides of the reset spring are respectively connected to the moving-in buckle frame and the mounting frame; the rotating lever is rotatably installed on the side of the mounting frame close to the moving-in buckle frame; the toggle plate is fixedly installed on the top of the valve core close to the side of the rotating lever.

[0015] In which, the regulating component also includes a mounting plate, a locking slide, a compression spring, an unlocking member and a covering member, the mounting plate is fixedly mounted on the bottom of the mounting frame; the locking slide is slidably mounted in the valve body; the two sides of the compression spring are respectively connected to the locking slide and the valve body; the unlocking member is connected to the valve body for driving the locking slide; the covering member is connected to the valve body for completing sealing protection by closing the corresponding operating area.

[0016] In which, the unlocking component includes a movable inclined plate, a transmission rod, a downward pressure spring, an extrusion inclined platform, a return spring and a guide sliding shaft, and the movable inclined plate is slidably installed in the valve body main body; the two sides of the transmission rod are respectively rotatably connected to the movable inclined plate and the locking slide plate; the two sides of the downward pressure spring are respectively connected to the movable inclined plate and the valve body main body; the extrusion inclined platform is slidably installed at the bottom of the valve body main body and cooperates with the movable inclined plate; the two sides of the return spring are respectively connected to the extrusion inclined platform and the valve body main body; the guide sliding shaft is rotatably installed on the side of the valve body main body close to the extrusion inclined platform.

[0017] In which, the sealing component includes an insertion shaft, a movable sealing plate and a rubber resistance pad, the insertion shaft is fixedly installed at the bottom of the valve body; the movable sealing plate is connected to the insertion shaft and is arranged on the side of the bottom of the valve body close to the extrusion ramp; the rubber resistance pad is fixedly installed on the side of the valve body close to the movable sealing plate.

[0018] The gas emergency shut-off valve with a non-return function of the present invention, during actual operation, the gas enters the valve body through the addition pipe on the side of the valve body main body, and then connects with the subsequent connecting pipe through the outlet pipe, thereby completing the normal flow of the gas. When a gas leak is detected, it can be quickly cut off through the control component, and then the introduction cylinder will absorb the remaining gas in the pipeline through the fixed joint through the provided negative pressure suction component, thereby achieving the ability to recover the gas retained in the pipeline after the emergency cut-off is completed through the provided component, avoiding further leakage and diffusion of the gas, thereby avoiding waste of resources and preventing subsequent gas leakage from causing further harm to the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0020] Figure 1 It is a schematic diagram of the overall structure of the gas emergency shut-off valve with a check function of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the overall bottom portion of the gas emergency shut-off valve with a non-return function according to the present invention.

[0022] Figure 3 The present invention Figure 2 Enlarged view of point A.

[0023] Figure 4 It is a schematic structural diagram of the mounting frame of the present invention after being cut open from the side.

[0024] Figure 5 The present invention Figure 4 Enlarged view of point B.

[0025] Figure 6 It is a schematic structural diagram of the side section of the mounting frame and the valve body of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the cross-section of the connector sleeve and the assembly frame of the present invention.

[0027] Figure 8 It is a schematic structural diagram of a cutaway fixed joint of the present invention.

[0028] Figure 9 It is a schematic structural diagram of the top section of the mounting frame of the present invention.

[0029] Figure 10 The present invention Figure 9 Enlarged view of point C.

[0030] Figure 11 It is a schematic structural diagram of the bottom section of the valve body of the present invention.

[0031] In the figure: 101-valve body, 102-access pipe, 103-export pipe, 104-mounting frame, 105-fixed joint, 106-plug sleeve, 107-introduction cylinder, 201-check valve, 202-negative pressure cylinder, 203-connecting joint, 301-assembly frame, 302-valve core, 401-outer gear, 402-drive gear shaft, 403-drive motor, 501-sleeved gear, 502-drive gear frame, 503-sliding plate, 504-extrusion Spring, 505-linked gear rack, 506-abutment plate, 601-moving buckle rack, 602-reset spring, 603-rotating dial rod, 604-dipping plate, 701-mounting plate, 702-locking slide plate, 703-compression spring, 801-moving inclined plate, 802-transmission rod, 803-downward pressure spring, 804-extrusion inclined platform, 805-return spring, 806-guide shaft, 901-penetration shaft, 902-movable sealing plate, 903-rubber resisting pad. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that “plurality” means two or more than two, unless otherwise clearly defined.

[0034] See also Figures 1 to 11 The present invention provides a gas emergency shut-off valve with a check function: comprising a valve body 101, an inlet pipe 102, a lead-out pipe 103 and a regulating assembly, wherein the regulating assembly comprises a mounting frame 104, a fixed joint 105, a plug sleeve 106, an introduction tube 107, a negative pressure suction component and a rotation control component, wherein the negative pressure suction component comprises a one-way valve 201, a negative pressure cylinder 202 and a connecting joint 203, wherein the rotation control component comprises an assembly frame 301, a valve core 302, a main control component and a linkage component, wherein the main control component comprises an outer gear 401, a drive gear shaft 402 and a drive motor 403, wherein the linkage component comprises a sleeve gear 501, a belt The movable gear rack 502, the sliding plate 503 and the extrusion spring 504, the linkage component also includes a linkage gear rack 505 and an abutment plate 506, and the rotation control component also includes a moving buckle rack 601, a reset spring 602, a rotating dial rod 603 and a dial plate 604. The above-mentioned solution solves the problem that after the existing gas emergency shut-off valve is cut off, the original transmission pipeline is still filled with gas. Since these gases cannot be collected, the remaining gas will continue to leak and spread, which will not only lead to unnecessary waste of resources, but also cause the gas concentration in the external environment to further increase, thereby causing a greater safety hazard.

[0035] Furthermore, the access pipe 102 and the outlet pipe 103 are respectively fixedly mounted on both sides of the valve body 101, the mounting frame 104 is arranged on the valve body 101, the fixed joint 105 is fixedly mounted in the mounting frame 104, the plug sleeve 106 is fixedly mounted on the side of the mounting frame 104 close to the valve body 101, the introduction tube 107 is rotatably connected to the fixed joint 105 and is arranged in the plug sleeve 106, the negative pressure suction component is connected to the fixed joint 105, and is used to attract excess gas after cut-off, and the rotation control component is connected to the mounting frame 104, and is used to complete the cut-off control of the valve body.

[0036] Specifically, the valve body 101 is connected to the pipelines at the gas output end and the connection end respectively through the access pipe 102 and the outlet pipe 103 arranged on both sides. The mounting frame 104 is installed above the valve body 101. The mounting frame 104 is fixedly provided with the fixed joint 105 inside. The introduction tube 107 is rotatably installed at the bottom of the fixed joint 105. The plug sleeve 106 is also provided on the outside of the introduction tube 107.

[0037] A corresponding through hole is provided inside the introduction tube 107. The connection relationship of the introduction tube 107 can be regulated by the through hole structure adopted by itself and the plug-in sleeve 106, so that the user can control the connection relationship of the introduction tube 107 itself by rotating the introduction tube 107.

[0038] When the through hole at the bottom of the introduction tube 107 is staggered with the through holes provided on both sides of the plug sleeve 106 , the through hole at the bottom of the introduction tube 107 will be blocked by the inner side wall of the plug sleeve 106 .

[0039] When the through hole at the bottom of the introduction tube 107 is aligned with the through holes on both sides of the plug sleeve 106 , the gas can enter the introduction tube 107 through the through hole at the bottom of the introduction tube 107 and then enter the fixed joint 105 .

[0040] The plug sleeve 106 is adapted to the insertion hole provided in the valve body 101. Since the plug sleeve 106 will not move after installation, a tighter connection can be adopted when cooperating with the insertion hole provided in the valve body 101. The plug sleeve 106 is provided on the side of the valve body 101 close to the outlet pipe 103 so as to absorb the residual gas in the pipeline.

[0041] During actual operation, the gas enters the valve body through the addition pipe on the side of the valve body main body 101, and then connects with the subsequent connecting pipe through the outlet pipe 103, thereby completing the normal flow of gas. When a gas leak is detected, it can be quickly cut off through the control component. After that, the introduction cylinder 107 will absorb the remaining gas in the pipeline through the fixed joint 105 through the provided negative pressure suction component, thereby achieving the recovery of the gas retained in the pipeline after the emergency cut-off through the provided component, avoiding further leakage and diffusion of the gas, thereby avoiding waste of resources and preventing subsequent gas leakage from causing further harm to the external environment.

[0042] Furthermore, the one-way valve 201 is connected to the fixed joint 105 and installed in the mounting frame 104; the negative pressure cylinder 202 is connected to the one-way valve 201 and installed on one side of the mounting frame 104; the connecting joint 203 is installed on the negative pressure cylinder 202.

[0043] When this embodiment is in use, the one-way valve 201 is provided between the fixed joint 105 and the negative pressure cylinder 202. The one-way valve 201 allows gas to only enter the negative pressure cylinder 202, while the gas in the negative pressure cylinder 202 cannot flow outward.

[0044] The connecting joint 203 is provided on the top of the negative pressure cylinder 202. The connecting joint 203 is used in conjunction with the corresponding absorption air pump to extract the gas inside the negative pressure cylinder 202, so that a certain degree of negative pressure or even vacuum is generated inside the negative pressure cylinder 202, so as to facilitate the subsequent suction and collection of the gas.

[0045] Furthermore, the assembly frame 301 is fixedly installed on the side of the mounting frame 104 close to the valve body 101; the valve core 302 is rotatably installed in the assembly frame 301; the main control component is connected to the mounting frame 104 for driving the valve core 302; the linkage component is connected to the introduction cylinder 107 for driving the introduction cylinder 107.

[0046] When this embodiment is in use, the assembly frame 301 is arranged at the bottom of the mounting frame 104, and the valve body 101 is provided with an assembly groove for cooperating with the assembly frame 301. The valve core 302 is arranged in the assembly frame 301. The cooperation between the assembly frame 301 and the valve core 302 is similar to the cooperation principle of the plug-in sleeve 106 and the introduction tube 107. Moreover, the direct insertion and cooperation between the assembly frame 301 and the plug-in sleeve 106 can avoid the problem of the valve core 302 being unable to ensure sealing during the assembled rotation connection. At the same time, by adopting the assembled installation of the mounting frame 104 and its corresponding main control structure, the user can quickly replace the entire control structure when a problem occurs with the main control component, making it more convenient in actual operation.

[0047] Furthermore, the outer gear 401 is fixedly mounted on the valve core 302 ; the gear provided on the drive gear shaft 402 is meshed with the outer gear 401 ; the output shaft of the drive motor 403 is connected to the drive gear shaft 402 , and the drive motor 403 is fixedly mounted in the mounting frame 104 .

[0048] Furthermore, the inserted gear 501 is fixedly mounted on the introduction tube 107; the driving gear rack 502 is engaged with the inserted gear rack and is slidably installed in the mounting frame 104; the sliding plate 503 is fixedly connected to the driving gear rack 502 and is slidably installed in the mounting frame 104; the two sides of the extrusion spring 504 are respectively connected to the sliding plate 503 and the mounting frame 104.

[0049] Furthermore, the linkage gear rack 505 is meshed with the gear of the driving gear shaft 402 and is slidably installed in the mounting frame 104; the abutment plate 506 is fixedly connected to the linkage gear rack 505 and is slidably installed on the side of the mounting frame 104 close to the sliding plate 503.

[0050] When this embodiment is in use, the outer sleeve gear 401 and the insert gear 501 are fixedly mounted on the outside of the valve core 302 and the inlet cylinder 107 respectively. The outer sleeve gear 401 is driven by the drive gear and the drive motor 403. The drive motor 403 is controlled by a control template arranged inside the mounting frame 104. When a gas leak is detected, the corresponding control template can drive the drive gear shaft 402 by manipulating the drive motor 403, thereby achieving control of the valve core 302 and subsequent gas cut-off.

[0051] The inserted gear 501 is driven by the driving gear rack 502, and the sliding plate 503 is fixed to the side end of the driving gear rack 502. The sliding plate 503 matches the sliding groove set inside the mounting frame 104. At the same time, the sliding plate 503 and the mounting frame 104 are matched with the extrusion spring 504 in the sliding groove. The extrusion spring 504 is in a compressed state and can apply a continuous pressure to the sliding plate 503.

[0052] The other side of the driving gear shaft 402 also cooperates with the linkage gear rack 505, and the abutment plate 506 is fixed to one end of the linkage gear rack 505. The abutment plate 506 and the sliding plate 503 are located in the same slide groove, and an elastic pad is provided on the side where the abutment plate 506 contacts the sliding plate 503 to avoid the collision between the two plates when working and affecting the structure of the plates themselves.

[0053] During actual operation, the driving gear shaft 402 can be driven by the driving motor 403, and then the valve core 302 is driven by the rotation of the driving gear shaft 402 in conjunction with the outer gear 401. When the valve core 302 is in the cut-off state, the linkage gear rack 505 will move sideways under the drive of the driving gear shaft 402. At the same time, the sliding plate 503 will also be squeezed by the extrusion spring 504 and cooperate with the driving gear rack 502 and the sleeve gear 501 to drive the introduction tube 107, so as to open the through hole at the bottom of the introduction tube 107, and then cooperate with the negative pressure cylinder 202 to complete the absorption of excess gas. When the bottom of the valve core 302 is in the open state, the abutment plate 506 will drive the sliding plate 503 to retract, so that the bottom of the introduction tube 107 is in a closed state to ensure the normal circulation of gas.

[0054] Furthermore, the moving-in buckle frame 601 is slidably installed on the side of the mounting frame 104 close to the sliding plate 503; the two sides of the reset spring 602 are respectively connected to the moving-in buckle frame 601 and the mounting frame 104; the rotating lever 603 is rotatably installed on the side of the mounting frame 104 close to the moving-in buckle frame 601; the toggle plate 604 is fixedly installed on the top of the valve core 302 close to the rotating lever 603.

[0055] When this embodiment is in use, the movable buckle frame 601 is adapted to the installation groove inside the mounting frame 104, and the reset spring 602 is provided in the installation groove where the movable buckle frame 601 is installed. The reset spring 602 is set so that the movable buckle frame 601 can be reset after being squeezed. At the same time, the insertion platform provided on the side of the movable buckle frame 601 also matches the socket on the side of the sliding plate 503.

[0056] The mounting frame 104 is also provided with the rotating lever 603 at the position where the moving-in buckle frame 601 is provided, and the corresponding shifting plate 604 is also provided on the top of the valve core 302. When the valve core 302 rotates, the shifting plate 604 provided on the valve core 302 can cooperate with one side of the rotating lever 603 after rotating to a certain angle, and then realize the corresponding drive of the moving-in buckle frame 601 by continuously driving the rotating lever 603 to rotate, so that the insertion platform at the end of the moving-in buckle frame 601 can be pulled out from the insertion hole on the side of the sliding plate 503.

[0057] A corresponding arc-shaped table surface is provided on one side of the sliding plate 503 that cooperates with the end insert of the movable buckle frame 601, so that after the sliding plate 503 is subsequently reset under the drive of the abutment plate 506, the arc-shaped table on the side of the sliding plate 503 can cooperate with the arc-shaped surface on the side of the end insert of the movable buckle frame 601, so that the movable buckle frame 601 retracts to a certain extent, and then cooperates with the socket on the side of the sliding plate 503 after the sliding plate 503 is completely reset, thereby limiting the sliding plate 503.

[0058] By limiting the sliding plate 503 accordingly, when a gas leak occurs, the valve core 302 can first cut off the gas by rotating. After the gas is cut off, the sliding plate 503 will cooperate with the driving gear rack 502 and the inserted gear 501 to drive the introduction tube 107 to rotate due to the release of the limit, so that it is more stable when absorbing the gas retained inside. At the same time, the above mechanism can also complete the corresponding sequential driving of the valve core 302 and the introduction tube 107 through only one driving element, making the entire structure more compact and more convenient and economical when replacing and maintaining electrical components.

[0059] Preferably, the regulating component provided by the present invention also includes a mounting plate 701, a locking slide 702, a compression spring 703, an unlocking component and a covering component, the unlocking component includes a movable inclined plate 801, a transmission rod 802, a downward pressure spring 803, an extrusion inclined stand 804, a return spring 805 and a guide sliding shaft 806, and the covering component includes an insertion shaft 901, a movable covering plate 902 and a rubber resistance pad 903.

[0060] Furthermore, the mounting plate 701 is fixedly mounted on the bottom of the mounting frame 104; the locking slide 702 is slidably mounted in the valve body 101; the two sides of the compression spring 703 are respectively connected to the locking slide 702 and the valve body 101; the unlocking member is connected to the valve body 101 for driving the locking slide 702; the covering member is connected to the valve body 101 for completing sealing protection by closing the corresponding operating area.

[0061] When this embodiment is in use, two of the mounting plates 701 are provided at the bottom of the mounting frame 104, and locking grooves for cooperating with the locking slides 702 are provided on both sides of the mounting plates 701. Each of the mounting plates 701 is provided with two locking slides 702 for cooperating and locking. Each of the locking slides 702 is also provided with a corresponding compression spring 703, thereby forming a stable spring snap structure. The bottom side of the mounting plate 701 and the side of the locking slide 702 for cooperating are provided with corresponding arc platforms, so that when cooperating, the locking slide 702 can quickly cooperate with the locking grooves on both sides of the mounting plate 701.

[0062] By adopting the corresponding spring lock structure, the splicing and installation between the mounting frame 104 and the valve body can be completed quickly, making it more convenient and quick for operators to maintain and replace the core control mechanism of the entire valve body.

[0063] Furthermore, the movable inclined plate 801 is slidably installed in the valve body main body 101; the two sides of the transmission rod 802 are respectively rotatably connected to the movable inclined plate 801 and the locking slide 702; the two sides of the downward pressure spring 803 are respectively connected to the movable inclined plate 801 and the valve body main body 101; the extrusion inclined platform 804 is slidably installed at the bottom of the valve body main body 101 and cooperates with the movable inclined plate 801; the two sides of the return spring 805 are respectively connected to the extrusion inclined platform 804 and the valve body main body 101; the guide sliding shaft 806 is rotatably installed on the side of the valve body main body 101 close to the extrusion inclined platform 804.

[0064] When the present embodiment is in use, the two locking slide plates 702 provided on the same side of the valve body cooperate with the same movable inclined plate 801 through the transmission rod 802, so that the two movable inclined plates 801 can be connected to the four locking slide plates 702 provided on both sides of the valve body through the provided transmission rod 802, and the two movable inclined plates 801 and the valve body are matched with the downward pressing spring 803, and the two movable inclined plates 801 cooperate with the extrusion inclined stand 804 provided at the bottom, and the extrusion The bevel pressing platform 804 is a "U"-shaped platform. The inclined surface of the extrusion bevel platform 804 cooperates with the inclined surface of the movable inclined plate 801. When the user moves the extrusion bevel platform 804, the movable inclined plate 801 will move upward under the drive of the extrusion bevel platform 804, and then cooperate with the transmission rod 802 to drive the corresponding two locking slides 702 to move, so as to drive the corresponding locking slides 702 to be pulled out from the locking grooves on both sides of the mounting plate 701, and finally complete the rapid disassembly of the mounting frame 104.

[0065] The downward pressure spring 803 on the top of the movable inclined plate 801 and the return spring 805 set on the side of the extrusion inclined platform are both used to achieve the reset of the corresponding plates. At the same time, a plurality of guide sliding shafts 806 are also provided at the bottom of the guide groove for the movement of the extrusion inclined platform. The rotation of the guide sliding shafts 806 can facilitate the user to move the extrusion inclined platform more easily and quickly.

[0066] Furthermore, the insertion shaft 901 is fixedly installed at the bottom of the valve body 101; the movable sealing plate 902 is connected to the insertion shaft 901 and is arranged on the side of the bottom of the valve body 101 close to the extrusion ramp 804; the rubber support pad 903 is fixedly installed on the side of the valve body 101 close to the movable sealing plate 902.

[0067] When this embodiment is in use, the insertion shaft 901 is fixed in the movable groove at the bottom of the valve body, and the movable sealing plate 902 is arranged inside the movable groove at the bottom of the valve body. The side end of the movable sealing plate 902 is provided with a transverse groove matching platform, and the transverse groove inside the transverse groove matching platform cooperates with the insertion shaft 901, so that the movable sealing plate 902 can perform corresponding movement and rotation under the guidance of the insertion shaft 901, and the end of the movable sealing plate 902 is adapted to the through hole on the corresponding side of the valve body, and the rubber support pad 903 is fixed on the inner side of the bottom of the through hole. The movable sealing plate 902 can be limited to a certain extent by the provided rubber support pad 903.

[0068] When the entire valve body is working normally, the side of the movable sealing plate 902 will pass through the through hole on the side of the valve body, and then the bottom boss will be limited by the rubber support pad 903. When the user needs to complete the disassembly of the access frame by moving the extrusion ramp 804, the user can first move the movable sealing plate 902 to disengage the movable sealing plate 902 from the through hole, and then turn the movable sealing plate 902 down to open the operating area at the bottom of the extrusion ramp 804, and then complete the subsequent operation. In this way, under normal circumstances, the operating area can be sealed by the movable sealing plate 902 to avoid risks such as accidental touch.

[0069] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A gas emergency shut-off valve with a non-return function, comprising a valve body, an inlet pipe and a outlet pipe, wherein the inlet pipe and the outlet pipe are fixedly mounted on both sides of the valve body, respectively, and characterized in that: Also includes regulatory components; The regulating and controlling assembly includes a mounting frame, a fixed joint, a plug sleeve, an introduction tube, a negative pressure suction component and a rotation control component; The mounting frame is arranged on the valve body, the fixed joint is fixedly installed in the mounting frame, the plug sleeve is fixedly installed on the side of the mounting frame close to the valve body, the introduction cylinder is rotatably connected to the fixed joint and is arranged in the plug sleeve, the negative pressure suction component is connected to the fixed joint, and is used to attract excess gas after cut-off, and the rotation control component is connected to the mounting frame, and is used to complete the cut-off control of the valve body.

2. The gas emergency shut-off valve with a check function according to claim 1, characterized in that: The negative pressure suction component includes a one-way valve, a negative pressure cylinder and a connecting joint. The one-way valve is connected to the fixed joint and installed in the mounting frame; the negative pressure cylinder is connected to the one-way valve and installed on one side of the mounting frame; the connecting joint is installed on the negative pressure cylinder.

3. The gas emergency shut-off valve with a check function according to claim 1, characterized in that: The rotation control component includes an assembly frame, a valve core, a main control component and a linkage component. The assembly frame is fixedly installed on the side of the mounting frame close to the valve body; the valve core is rotatably installed in the assembly frame; the main control component is connected to the mounting frame for driving the valve core; the linkage component is connected to the introduction cylinder for driving the introduction cylinder.

4. The gas emergency shut-off valve with a check function according to claim 3, characterized in that: The main control component includes an outer gear, a driving gear shaft and a driving motor. The outer gear is fixedly mounted on the valve core; the gear arranged on the driving gear shaft is engaged with the outer gear; the output shaft of the driving motor is connected to the driving gear shaft, and the driving motor is fixedly installed in the mounting frame.

5. The gas emergency shut-off valve with a non-return function according to claim 4, characterized in that: The linkage component includes a sleeve gear, a driving gear rack, a sliding plate and an extrusion spring. The sleeve gear is fixedly sleeved on the introduction cylinder; the driving gear rack is engaged with the sleeve gear rack and is slidably installed in the mounting frame; the sliding plate is fixedly connected to the driving gear rack and is slidably installed in the mounting frame; the two sides of the extrusion spring are respectively connected to the sliding plate and the mounting frame.

6. The gas emergency shut-off valve with a check function according to claim 5, characterized in that: The linkage component also includes a linkage gear rack and an abutment plate. The linkage gear rack is engaged with the gear of the driving gear shaft and is slidably installed in the mounting frame; the abutment plate is fixedly connected to the linkage gear rack and is slidably installed on a side of the mounting frame close to the sliding plate.

7. The gas emergency shut-off valve with a check function according to claim 6, characterized in that: The rotation control component also includes a moving-in buckle frame, a reset spring, a rotating lever and a toggle plate. The moving-in buckle frame is slidably installed on the side of the mounting frame close to the sliding plate; the two sides of the reset spring are respectively connected to the moving-in buckle frame and the mounting frame; the rotating lever is rotatably installed on the side of the mounting frame close to the moving-in buckle frame; the toggle plate is fixedly installed on the top of the valve core close to the side of the rotating lever.

8. The gas emergency shut-off valve with a check function according to claim 1, characterized in that: The regulating assembly also includes a mounting plate, a locking slide, a compression spring, an unlocking member and a covering member. The mounting plate is fixedly mounted on the bottom of the mounting frame; the locking slide is slidably mounted in the valve body; the two sides of the compression spring are respectively connected to the locking slide and the valve body; the unlocking member is connected to the valve body for driving the locking slide; the covering member is connected to the valve body for completing sealing protection by closing the corresponding operating area.

9. The gas emergency shut-off valve with a check function according to claim 8, characterized in that: The unlocking component includes a movable inclined plate, a transmission rod, a downward pressure spring, an extrusion inclined platform, a return spring and a guide sliding shaft. The movable inclined plate is slidably installed in the valve body main body; the two sides of the transmission rod are respectively rotatably connected to the movable inclined plate and the locking slide plate; the two sides of the downward pressure spring are respectively connected to the movable inclined plate and the valve body main body; the extrusion inclined platform is slidably installed at the bottom of the valve body main body and cooperates with the movable inclined plate; the two sides of the return spring are respectively connected to the extrusion inclined platform and the valve body main body; the guide sliding shaft is rotatably installed on the side of the valve body main body close to the extrusion inclined platform.

10. The gas emergency shut-off valve with a check function according to claim 9, characterized in that: The sealing component includes an insertion shaft, a movable sealing plate and a rubber resistance pad. The insertion shaft is fixedly installed at the bottom of the valve body; the movable sealing plate is connected to the insertion shaft and is arranged on the side of the bottom of the valve body close to the extrusion ramp; the rubber resistance pad is fixedly installed on the side of the valve body close to the movable sealing plate.

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