Gas safety interlocking valve

Abstract

The fuel gas safety interlocking valve comprises a valve pipe with a cover body arranged on one side, a baffle arranged in a sliding mode is arranged in the valve pipe in the radial direction, a lock cylinder is rotationally arranged in the cover body in a positioned mode, a lead screw arranged on one side of the lock cylinder is rotationally connected with one end of the baffle, and a lock hole is formed in the other side of the lock cylinder; a lock rod detachably connected with the lock cylinder is arranged in the side wall of the cover body in a sliding mode. The unlocking assembly comprises a magnetic ring used for magnetically moving the lock rod and a driving piece used for driving the lock cylinder to rotate. The cover body is arranged at one end of the valve pipe, the baffle and the lock cylinder are arranged in the cover body, so that the baffle has the function of locking the valve, and when a worker opens or closes the valve, the unlocking assembly needs to be used in cooperation, the lock rod and the lock cylinder are unlocked, and the driving piece rotates the lock cylinder to adjust the height of the baffle; control and management of the gas valve can be enhanced, misoperation of a user is avoided, the probability of malicious damage, stealing opening and the like of the user is reduced, and gas use safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas anti-theft opening valves, and in particular to a gas safety interlock valve. Background Art

[0002] As a key control device in the gas transmission and distribution system, the main structure of the gas ball valve consists of core components such as a valve body, a ball, a valve stem, and a sealing component. The valve body is usually manufactured by forging or casting processes, and the materials are mainly brass or stainless steel, including an inlet end, an outlet end, and a valve cavity. In the civilian field, the gas ball valve has become an indispensable control component in the gas system of residential buildings.

[0003] In the prior art, the structure of the gas ball valve can refer to CN102345745A. During the use of the gas ball valve, its opening and closing operations cannot be restricted. Since its opening and closing structures are both arranged outside the valve body and there is no protection device, any person who can touch the valve handle can open or close the valve at will, resulting in problems such as the gas ball valve being easily damaged or stolen, causing potential safety hazards.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the Invention

[0005] In order to solve the problems in the prior art that the structure of the gas ball valve is simple, its opening and closing structures are arranged outside the valve body and there is no protection device, resulting in any person who can touch the valve handle can open or close the valve at will, leading to problems such as the gas ball valve being easily damaged or stolen, causing potential safety hazards, the present invention provides a safety interlock valve.

[0006] The present invention is achieved through the following technical solutions:

[0007] A gas safety interlock valve, wherein the gas safety interlock valve includes:

[0008] A valve tube, on one side of which there is a cover body. A baffle is arranged radially in the valve tube and is slidably arranged corresponding to the position of the cover body. A lock core is rotatably positioned in the cover body. A lead screw arranged on one side of the lock core is rotatably connected to one end of the baffle. A lock hole is arranged on the other side of the lock core, and the position corresponding to the lock hole on the cover body is provided with a hollow opening;

[0009] The side wall of the cover body is hollowed out to form an adjustment cavity, and a lock rod is slidably arranged in the adjustment cavity. The lock rod is detachably connected to the lock core;

[0010] An unlocking assembly, the unlocking assembly includes a magnetic ring for magnetically moving the lock rod, and a driving member adapted to the lock hole and used for driving the lock core to rotate.

[0011] The described gas safety interlock valve, wherein the valve pipe includes an extension portion which protrudes downward from the valve pipe, the baffle is sleeved and slidably arranged within the extension portion, the cover body is fixedly sleeved outside the extension portion, and the lead screw passes through the extension portion and is connected to the baffle.

[0012] The described gas safety interlock valve, wherein a fitting groove is arranged at a position corresponding to the extension portion within the inner cavity of the valve pipe, and the shape of the fitting groove is adapted to the shape of the corresponding end of the baffle.

[0013] When the baffle moves to a predetermined position within the valve pipe, one end of the baffle is inserted into the fitting groove.

[0014] The described gas safety interlock valve, wherein the adjusting cavity is arranged in the vertical direction, a locking groove is arranged at a position corresponding to the adjusting cavity on the lock core, the shape of the locking groove is adapted to the shape of the corresponding end of the lock rod, and the lock rod is clamped in the locking groove under the action of gravity.

[0015] The part of the cover body corresponding to the lock rod is partially transparent.

[0016] The described gas safety interlock valve, wherein the cross-sectional shape of the lock hole is a regular polygon, and the cross-sectional shape of the hollowed-out part of the cover body corresponding to the lock hole is a circle.

[0017] The cross-sectional shape of the driving member is adapted to the cross-sectional shape of the lock hole, and a plurality of guiding surfaces are arranged at the end of the driving member, and the plurality of guiding surfaces are inclined at a predetermined angle.

[0018] The described gas safety interlock valve, wherein the cross-sectional shape of the lock hole is a triangle, and retaining plates are respectively arranged along the triangular edge of the lock hole on the outer side of the lock core. The retaining plates are respectively rotatably connected to the lock core and are driven by compression springs to abut against each other.

[0019] The retaining plates are original magnet retaining plates. When the magnetic ring is sleeved on the cover body at a position corresponding to the lock hole, the retaining plates are separated from each other.

[0020] The described gas safety interlock valve, wherein a ball valve switch assembly is arranged at one end within the valve pipe. The ball valve switch assembly includes:

[0021] A connecting rod which passes through and is rotatably positioned on the valve pipe.

[0022] A handle which is fixedly arranged at one end of the connecting rod corresponding to the outside of the valve pipe.

[0023] A sphere is fixedly arranged on one end of the connecting rod corresponding to the interior of the valve tube, and an opening is provided through the center of the sphere.

[0024] The gas safety interlock valve, wherein the other end of the valve tube is provided with a backflow prevention assembly, and the backflow prevention assembly includes:

[0025] a snap ring, the snap ring being fixedly disposed in the valve tube;

[0026] A sealing plate is abutted on a side of the clamping ring facing away from the sphere. A base is provided inside the valve tube, and the sealing plate is elastically connected to the base.

[0027] The gas safety interlock valve, wherein the backflow prevention component further comprises:

[0028] a telescopic rod, the telescopic rod being arranged along the central axis of the valve tube, one end of the telescopic rod being fixedly connected to the base, and the other end of the telescopic rod being fixedly connected to the center of the sealing plate;

[0029] A tower spring, wherein an end with a larger diameter on the tower spring is fixedly connected to the baffle, and an end with a smaller diameter on the tower spring is fixedly connected to the base.

[0030] The gas safety interlock valve, wherein the two ends of the valve pipe are respectively provided with connecting parts, and the connecting parts are continuously provided with threads;

[0031] The outer side of the cover body is smoothly arranged.

[0032] The beneficial effects of the present invention are as follows: the present invention provides a cover at one end of the valve tube, and provides a baffle and a lock core inside the cover, so that the baffle has the function of locking the valve. When the staff opens or closes the valve, they need to use the unlocking component to unlock the locking rod and the lock core, and make the driving part rotate the lock core to adjust the height of the baffle. The present invention can strengthen the control and management of the gas valve, avoid user misoperation, and reduce the probability of malicious damage or stealing by users, thereby improving the safety of gas use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the gas safety interlock valve of the present invention;

[0034] Figure 2 This is an exploded view of the structure of the gas safety interlock valve of the present invention;

[0035] Figure 3 This is a cross-sectional view of the gas safety interlock valve of the present invention in a first state;

[0036] Figure 4It is the second-state cross-sectional view of the gas safety interlock valve of the present invention;

[0037] Figure 5 It is the schematic structural view of the baffle plate arranged in the lock hole of the gas safety interlock valve of the present invention;

[0038] Figure 6 It is the schematic exploded view of the structure of the baffle plate in the gas safety interlock valve of the present invention.

[0039] In Figures 1 to 6 : 100, valve pipe; 101, connecting part; 110, baffle plate; 120, extension part; 130, fitting groove; 200, cover body; 210, adjustment cavity; 220, lock rod; 300, lock core; 310, lead screw; 320, locking groove; 330, lock hole; 340, baffle plate; 341, compression spring; 400, unlocking component; 410, magnetic ring; 420, driving part; 421, guiding surface; 500, ball valve switch component; 510, connecting rod; 520, handle; 530, sphere; 600, anti-backflow component; 610, snap ring; 620, sealing plate; 630, tower spring; 640, telescopic rod; 650, base. Detailed implementation manners

[0040] To make the purpose, technical solutions and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0043] In the prior art, the structure of the gas ball valve can refer to CN102345745A. During the use of the gas ball valve, its opening and closing operations cannot be restricted. Since its opening and closing structures are both arranged outside the valve body and there is no protection device, any person who can touch the valve handle can randomly open or close the valve, resulting in problems such as easy damage and unauthorized opening of the gas ball valve, causing potential safety hazards.

[0044] In view of the above problems in the prior art, the present invention provides a gas safety interlock valve, as Figure 2 and Figure 3 shown, the gas safety interlock valve includes: a valve pipe 100, a cover body 200 is provided on one side of the valve pipe 100, a baffle 110 is arranged radially in the valve pipe 100 and is slidably arranged corresponding to the position of the cover body 200, a lock core 300 is rotatably positioned in the cover body 200, a lead screw 310 arranged on one side of the lock core 300 is rotatably connected to one end of the baffle 110, a lock hole 330 is arranged on the other side of the lock core 300, and the position corresponding to the lock hole 330 on the cover body 200 is provided with a hollow; a hollow adjustment cavity 210 is arranged in the side wall of the cover body, a lock rod 220 is slidably arranged in the adjustment cavity 210, and the lock rod 220 is detachably connected to the lock core 300; an unlocking assembly 400, the unlocking assembly 400 includes a magnetic ring 410 for magnetically moving the lock rod 220, and a driving member 420 adapted to the lock hole 330 and used for driving the lock core 300 to rotate.

[0045] In the present invention, by providing a cover body 200 at one end of the valve pipe 100 and arranging a baffle 110 and a lock core 300 inside the cover body 200, the baffle 110 has the function of locking the valve. When the staff opens or closes the valve, it is necessary to use the unlocking assembly 400 to cooperate, unlock the lock rod 220 and the lock core 300, and rotate the lock core 300 by the driving member 420 to adjust the height of the baffle 110 to achieve. The present invention can strengthen the control and management of the gas valve, avoid misoperation by users and reduce the probability of malicious damage and unauthorized opening by users, thereby ensuring the safety of gas use.

[0046] In the above embodiment, the combined structure of the gas safety interlock valve of the present invention is as Figure 1 shown. Compared with the gas ball valve in the prior art, there are only differences in the part where the cover body 200 is provided, which does not affect the direct replacement of the gas ball valve in the prior art, and will not have any adverse effects on subsequent use.

[0047] Specifically, as Figure 2 and Figure 3 shown, both ends of the valve pipe 100 of the present invention are provided with through holes, and it is made of a metal material that is not easily corroded and has strong compressive performance. A baffle 110 is arranged inside the valve pipe 100, and the baffle 110 is slidably arranged along the radial direction of the valve pipe 100 and corresponds to the inner hole size of the valve pipe 100. One function of the cover body 200 structure arranged on the valve pipe 100 is to accommodate the baffle 110, so as to form an effect that the baffle 110 avoids the inner hole of the valve pipe 100 as Figure 4 shown. On the other hand, when the baffle 110 moves to the position corresponding to the inner hole of the valve pipe 100, the effect of closing the valve pipe 100 is formed.

[0048] In this embodiment, the position of the baffle 110 is adjusted by providing a screw rod 310 on the lock core 300. The screw rod 310 is rotatably connected to one end of the baffle 110. Due to the limiting effect of the valve tube 100 and the cover body 200 on the baffle 110, when the lock core 300 rotates, the screw rod 310 rotates synchronously. The threaded structure on the screw rod 310 connected to the baffle 110 cooperates to form a component force for moving the baffle 110. Therefore, the above-mentioned driving effect on the baffle 110 can be achieved by rotating the lock core 300. In this embodiment, the lock core 300 is positioned and rotatably arranged inside the cover body 200 to prevent unrelated users from touching it. In addition, In order to enable professionals to operate the lock core 300 efficiently, a lock hole 330 is provided on the side of the lock core 300 away from the screw rod 310. Correspondingly, the portion corresponding to the lock hole 330 on the cover body 200 is hollowed out. At the same time, an unlocking component 400 is also configured in this embodiment. The unlocking component 400 includes a driving member 420, which is adapted to the above-mentioned lock hole 330. In actual use, professionals can insert the driving member 420 into the lock hole 330 to drive the lock core 300 to rotate, thereby completing the adjustment of the position of the baffle 110, and then realizing the closing or opening of the inner hole of the valve tube 100.

[0049] Since the lock core 300 is covered by the cover body 200, unrelated users cannot manually rotate the lock core 300. At the same time, since the lock hole 330 on the lock core 300 is compatible with the drive member 420, unrelated users will find it difficult to find a drive structure that is compatible with the lock core 300 if they cannot obtain the drive member 420. This can effectively reduce the risk of unrelated users opening or closing the valve at will, which may cause the gas ball valve to be easily damaged or opened secretly.

[0050] Furthermore, based on the above embodiment, in order to further prevent the lock core 300 from being opened secretly, a pair of locking structures of the lock core 300 are further provided in this embodiment, such as Figure 3 and Figure 4 As shown, an adjustment cavity 210 is hollowly provided in the side wall of the cover body 200, and a freely slidable locking rod 220 is provided inside the adjusting cavity 210. The locking rod 220 is detachably connected to the lock core 300. At the same time, the above-mentioned unlocking component 400 also includes a magnetic ring 410, which is magnetically adapted to the locking rod 220 and can be used to adjust the position of the locking rod 220 in the adjusting cavity 210 to achieve the effect of combining or separating the locking rod 220 and the lock core 300.

[0051] Based on the above embodiments, when the gas safety interlock valve of the present invention is opened or closed, two conditions need to be met. One is that a magnetic ring 410 is required to adjust the position of the locking rod 220 to unlock the lock core 300 so that the lock core 300 can rotate; the other is that a driving member 420 adapted to the lock hole 330 is required to drive the rotation of the lock core 300. Under normal circumstances, unrelated users lack the experience and tools to open the gas safety interlock valve of the present invention and will give up adjusting the gas safety interlock valve when observing that the cover 200 cannot rotate. Even if unrelated users have observed the process of a professional unlocking the lock, it is difficult to obtain the driving member 420 and the magnetic ring 410, and it is impossible to open the gas safety interlock valve. In addition, there are sequence requirements and requirements for the placement position of the magnetic ring 410 during the operation of the gas safety interlock valve of the present invention. And because the setting of the cover 200 hides the linkage relationship of the internal structure, when there are errors in the operation steps, even if unrelated users obtain the unlocking assembly 400, it is still difficult to open the gas safety interlock. Therefore, it greatly avoids user misoperation and reduces the probability of malicious damage, unauthorized opening, etc. by users, and can strengthen the control and management of gas valves, thereby ensuring gas use safety.

[0052] In an implementable embodiment of the present invention, as Figure 2 and Figure 3 shown, due to the use requirements of anti-pressure and anti-leakage of the valve pipe 100 in the gas system, in order to make the structure of the adjusting part of the baffle 110 in the present invention more reliable, in this embodiment, an extension part 120 is further provided on the valve pipe 100. The above baffle 110 is sleeved and slidably arranged in the extension part 120. The above cover 200 is fixedly sleeved on the outside of the extension part 120. The above lock core 300 is arranged at the position between the extension part 120 and the cover 200. The extension part 120 and the valve pipe 100 are made by an integral molding method. The lead screw 310 on the lock core 300 passes through the extension part 120 and is connected to the baffle 110 to realize the function of driving the baffle 110. Since the position of the lock core 300 is restricted by the cover 200 and the extension part 120, the effect of positioning and rotational installation is achieved, and the opening on the extension part 120 can be blocked.

[0053] In this embodiment, the structure shape of the extension part 120 corresponding to the inside of the valve pipe 100 is adapted to the shape of the baffle 110. As Figure 3 and Figure 4 shown, the extension part 120 serves to accommodate the baffle 110 and limit the moving direction of the baffle 110. On the other hand, the combined part of the extension part 120 and the baffle 110 also serves to block the gas. In actual setting, the part where the lead screw 310 passes through the extension part 120 can refer to the installation structure of the valve handle of the gas ball valve in the prior art to ensure the sealing and anti-pressure effect of this part.

[0054] Furthermore, as Figure 3 and Figure 4 shown, to improve the sealing and blocking effect when the baffle 110 closes the inner cavity of the valve pipe 100, in this embodiment, a fitting groove 130 is further provided at the position corresponding to the extension part 120 in the inner cavity of the valve pipe 100. The shape of the fitting groove 130 is adapted to the shape of the corresponding end of the baffle 110. When the baffle 110 is moved to the limit position of closing the inner cavity of the valve pipe 100, the baffle 110 is fitted into the fitting groove 130 to achieve complete fixation of the baffle 110, thereby ensuring the stability of sealing the inner cavity of the valve pipe 100.

[0055] In another implementable manner, the above-mentioned extension part 120 preferably protrudes downward on one side of the valve pipe 100. The advantage of this setting is that the installation directions of the cover body 200 and the lock core 300 are also downward on one side. Furthermore, the lock hole 330 is located in a position that is not easy to observe. For professionals who are very familiar with the structure of the gas safety interlock valve of the present invention, they can easily find the position of the lock hole 330 and use the driving member 420 to drive the rotation of the lock core 300. For irrelevant users who are not familiar with the gas safety interlock valve, only the cover body 200 can be observed from their viewing angle, which has a certain hindrance to further observing the structures of the lock core 300 and the lock hole 330, thus hindering the irrelevant users from adjusting the lock core 300; on the other hand, the adjustment cavity 210 provided inside the cover body 200 is arranged vertically corresponding to the setting direction of the extension part 120. Correspondingly, a locking groove 320 is further provided at the position corresponding to the adjustment cavity 210 on the lock core 300. The shape of the locking groove 320 is adapted to the shape of one end of the lock rod 220. Please refer to Figure 2 and Figure 3 . Under the action of gravity, the lock rod 220 naturally falls into the locking groove 320 in the adjustment cavity 210 and forms a snap fit with the locking groove 320, thereby keeping the position of the lock core 300 locked. When an irrelevant user wants to rotate the lock core 300, it is difficult to unlock the lock core 300 without a magnetic ring 410 or without understanding the locking principle of the lock rod 220.

[0056] When specifically setting, the above-mentioned cover 200 should be made of an opaque material to block the structure of the lock core 300 part, so as to prevent unauthorized users from learning the internal structure principle. At the same time, the part of the cover 200 corresponding to the lock rod 220 should be partially transparent. For example, only the position corresponding to a part of the adjustment cavity 210 is set to be transparent, and specific parts of the lock rod 220 are marked. When a professional uses the magnetic ring 410 to adjust the position of the lock rod 220 and unlock the lock core 300, the position of the lock rod 220 can be observed through the transparent part to judge whether the unlocking is completed, so as to achieve the effect of fast operation. At the same time, it is difficult for unauthorized users to understand the corresponding structure between the lock rod 220 and the lock core 300 only through this part of the transparent part, achieving the effect of hindering unauthorized users from opening the gas safety interlock valve.

[0057] In this embodiment, the above-mentioned magnetic ring 410 is preferably set so that the inner hole size is adapted to the outer diameter size of the cover 200. When a professional uses it, by sleeving the magnetic ring 410 from one end of the cover 200 and pushing the magnetic ring 410 to a position close to the valve tube 100, during the process, the magnetic ring 410 attracts the lock rod 220 to move upward along the adjustment cavity 210, so that the lock rod 220 disengages from the locking groove 320, thereby realizing the unlocking of the lock core 300. Then, with the magnetic ring 410 fixed in position, the driving member 420 is inserted into the lock hole 330, and the lock core 300 is rotated by rotating the driving member 420, thereby realizing the opening of the valve tube 100.

[0058] In another implementable manner of the present invention, as Figure 4 and Figure 5 shown, in order to enable the lock hole 330 to have the function of driving the lock core 300 and at the same time prevent unauthorized users from using structures such as crowbars as substitutes, in this embodiment, it is preferably set that the cross-section of the above-mentioned lock hole 330 is a regular polygon. Correspondingly, the cross-section shape of the driving member 420 is set to be adapted to the cross-section shape of the lock hole 330. When the driving member 420 is inserted into the lock hole 330, a structure relationship of limiting fit is formed with the inner wall of the lock hole 330, so that the lock hole 330 can be driven when the driving member 420 is rotated. In addition, the cross-section shape of the hollowed-out part of the cover 200 corresponding to the lock hole 330 should be set to be circular to avoid interfering with the process of the driving member 420 rotating the lock core 300.

[0059] Since in the above embodiment, the extension part 120 is arranged downward towards the valve tube 100, resulting in the lock hole 330 corresponding to the lower side towards the valve tube 100. To facilitate professionals to insert and remove the driving member 420, as Figure 2As shown, it is also preferably to provide a plurality of guiding surfaces 421 at the end of the driving member 420. The plurality of guiding surfaces 421 are inclined at a predetermined angle, so that the end of the driving member 420 forms a pointed structure with a reduced size. The plurality of inclined guiding surfaces 421 cooperate with the inner wall of the lock hole 330 to guide the driving member 420 to enter during the insertion of the driving member 420, thereby improving the operation efficiency of professionals.

[0060] In a specific embodiment, taking the cross-section of the lock hole 330 as a triangle as an example, to further prevent unauthorized users from using a crowbar or other structures to replace the driving member 420 to rotate the lock core 300, in this embodiment, there are also retaining pieces 340 respectively arranged along the triangular edge of the lock hole 330 on the outer side of the lock core 300, as Figure 6 shown. The shape of the retaining piece 340 is triangular, and the height dimension of the retaining piece 340 is slightly larger than the height dimension from the center of the lock hole 330 to the inner wall of the lock hole 330. The retaining piece 340 should have a certain thickness. During specific production, the three retaining pieces 340 are respectively rotatably connected to the corresponding parts on the lock core 300 outside the lock hole 330, and a compression spring 341 structure is arranged at the rotatable connection part. Driven by the compression spring 341, when there is no external force, the three retaining pieces 340 are respectively driven by the compression spring 341 to lift upward, and form a structure effect of mutual abutment and blocking the lock hole 330, that is, as Figure 5 shown in the structural state. In this state, when an unauthorized user inserts a crowbar into the lock hole 330, it is blocked by the retaining piece 340 and cannot enter. Also, due to the setting of the height dimension of the retaining piece 340, during the process of the unauthorized user applying force with the crowbar, the three retaining pieces 340 abut against each other and oppose the unauthorized user. Also, since the lock hole 330 faces downward and it is not easy for unauthorized users to observe, the structure of the lock hole 330 can be made more secure, and the situation of unauthorized users maliciously blocking the lock hole 330 can also be avoided.

[0061] The above-mentioned retaining piece 340 is made of a ferromagnetic material, specifically, it can be made of materials such as iron. In this embodiment, when a professional needs to open the retaining piece 340, only need to sleeved the magnetic ring 410 on the position of the cover body 200 corresponding to the lock hole 330, and separate the retaining piece 340 by magnetic attraction, and form an opposition to the compression spring 341. At this time, a certain degree of opening is formed between the retaining pieces 340. Cooperating with the guiding surface 421 structure provided at the end of the driving member 420, the retaining piece 340 can further oppose the compression spring 341 to open to open the lock hole 330 channel, so as to achieve the effect of inserting the driving member 420 into a predetermined position in the lock hole 330.

[0062] In this embodiment, since the cross-section of the hollowed-out part of the cover body 200 corresponding to the lock hole 330 is circular, when the flap 340 fully opened by the driving member 420 rotates to the downward direction, it will not interfere with the cooperation between the driving member 420 and the lock hole 330, nor will it affect the rotation process of the lock core 300. Therefore, the structural setting of the flap 340 in the present invention can further achieve the function of protecting the lock hole 330, effectively blocking the operations of unauthorized users. At the same time, the unlocking process of the flap 340 uses the structure of the magnetic ring 410, and the use path of the magnetic ring 410 is on the original use path without adding additional operation steps.

[0063] Based on the above embodiment, the gas safety interlock valve of the present invention further includes a ball valve switch assembly 500, as Figure 2 and Figure 3 shown. The ball valve switch assembly 500 is composed of a connecting rod 510, a handle 520 and a sphere 530. Among them, the connecting rod 510 penetrates and is rotationally positioned on the valve pipe 100. The handle 520 is fixedly arranged at one end of the railing corresponding to the outside of the valve pipe 100. The sphere 530 is fixedly arranged at one end of the connecting rod 510 corresponding to the inside of the valve pipe 100 and can rotate relative to the inner hole of the valve pipe 100. An opening is also provided through the center position of the sphere 530. By rotating the handle 520, the corresponding direction between the opening on the sphere 530 and the inner hole of the valve pipe 100 can be adjusted, so as to achieve the function of opening or closing the valve. The setting of the ball valve switch assembly 500 is relatively common in the prior art, so it will not be elaborated too much. Those skilled in the art can refer to the prior art to set the ball valve switch assembly 500 and preset the relevant sealing performance, the structure of the connecting part 101, etc. The present application does not limit this.

[0064] Different from the prior art, on the basis of the structures such as the baffle 110, the lock core 300, and the cover body 200 provided in the above gas safety interlock valve, by setting the ball valve switch assembly 500, the function of the user actively opening and closing the gas valve is retained. For example, on the basis that the professional adjusts the baffle 110 into the extension part 120 to open the valve pipe 100, that is, at this time the professional allows the valve pipe 100 to use the gas supply function, the user can freely decide to open or close the gas in the valve pipe 100 through the ball valve switch assembly 500, so as to meet the usage requirements in daily life; on the basis that the professional adjusts the baffle 110 into the valve pipe 100 to close the valve pipe 100, that is, at this time the professional closes the gas supply function of the valve pipe 100, even if the user operates the ball valve switch assembly 500, the gas supply cannot be opened. Therefore, it is possible to avoid the situation that unauthorized users privately open and close the gas valve, resulting in potential safety hazards.

[0065] In another feasible implementation manner of the present invention, as Figure 3 and Figure 4As shown, based on the above embodiment, in the gas safety interlock valve of the present invention, a backflow prevention assembly 600 is further provided on the other end of the valve tube 100 corresponding to the above ball valve switch assembly 500. The backflow prevention assembly 600 is provided to block the backflow of the medium. The reason for this is that some users may mistakenly connect the gas pipe to the water pipe due to misoperation or private modification, resulting in water flowing into the gas pipe. This will not only damage the gas equipment, but may also cause serious consequences such as pipeline corrosion and valve jamming. Based on the above reasons, the backflow prevention assembly 600 of the present invention includes a clamping ring 610 and a sealing plate 620, wherein the clamping ring 610 is used to limit the aperture of the inner hole of the valve tube 100 at this position. In actual setting, the clamping ring 610 can be made in an integral molding manner with the valve tube 100 to ensure structural strength. The sealing plate 620 abuts against the clamping ring 610 to form a seal on the inner hole of the clamping ring 610. In specific setting, a base 650 is provided at a position at a certain distance from the sealing plate 620 inside the valve tube 100. The base 650 is located on the side of the retaining ring 610 away from the above-mentioned ball valve switch assembly 500, and the sealing plate 620 is elastically connected to the base 650. When the ball valve switch assembly 500 is opened, the gas / liquid entering the valve pipe 100 squeezes the sealing plate 620, thereby separating the sealing plate 620 from the retaining ring 610, so that the gas / liquid can pass through the valve pipe 100 smoothly. When there is gas / liquid flowing in the opposite direction, the pressure generated will firmly squeeze the sealing plate 620 on the retaining ring 610, thereby achieving the effect of preventing backflow.

[0066] More specifically, the elastic connection between the sealing plate 620 and the base 650 is achieved through a telescopic rod 640 and a tower spring 630, wherein the telescopic rod 640 is arranged on the central axis of the smoke valve tube 100, one end of the telescopic rod 640 is fixedly connected to the base 650, and the other end is fixedly connected to the center of the sealing plate 620, forming a position constraint on the sealing plate 620 in the valve tube 100, which can avoid the sealing plate 620 from being offset after use. The end with a larger diameter on the tower spring 630 is fixedly connected to the baffle 110, and the end with a smaller diameter is fixedly connected to the base 650, which can form a pre-pressure on the sealing plate 620 to achieve the effect of resetting the sealing plate 620 in the above-mentioned anti-backflow process.

[0067] In the above embodiment, connecting parts 101 are further provided at both ends of the valve tube 100. Threads are continuously provided in the connecting parts 101 for connecting with pipes of the same specifications for laying gas pipelines.

[0068] In addition, the outer side of the cover body 200 should be smooth, thereby increasing the difficulty for unauthorized users to dismantle the cover body 200 and preventing unauthorized users from damaging the structure of the gas safety interlock valve.

[0069] Based on the above embodiment, the use process of the gas safety interlock valve of the present invention is as follows:

[0070] As Figure 3 shown Figure 3 is a cross-sectional view of the closed state of the gas safety interlock valve. In this state, the baffle 110 blocks the inner hole of the valve pipe 100. Even if an unauthorized user opens the ball valve switch assembly 500, the usage state of the gas safety interlock valve cannot be changed. At the same time, without the unlocking component 400, the unauthorized user cannot unlock the lock core 300, let alone drive the lock core 300 to rotate, that is, cannot change the usage state of the valve, which can avoid situations such as accidental touching and unauthorized opening of the valve.

[0071] When a professional wants to open the gas safety interlock valve, first use the magnetic ring 410 to sleeve on the position of the cover body 200 corresponding to the lock hole 330 to make the flap 340 in an open state, then insert the driving member 420 into the lock hole 330, and further move the magnetic ring 410 upward. Adjust the position of the lock rod 220 through magnetic force to unlock the lock core 300, and then rotate the driving member 420 to rotate the lock core 300. Under the action of the lead screw 310, change the position of the baffle 110 to open the valve.

[0072] After the valve is opened, the user can control the opening and closing of the gas valve through the ball valve switch assembly 500, so as to meet the gas usage requirements in daily life on the basis of professional management and confirmation.

[0073] In summary, the present invention provides a gas safety interlock valve, which includes: a valve pipe, a cover body is arranged on one side of the valve pipe, a baffle corresponding to the position of the cover body and slidably arranged is arranged radially in the valve pipe, a lock core is positioned and rotatably arranged in the cover body, a lead screw arranged on one side of the lock core is rotatably connected to one end of the baffle, a lock hole is arranged on the other side of the lock core, and the position corresponding to the lock hole on the cover body is provided with a hollow; a regulating cavity is hollowly arranged in the side wall of the cover body, a lock rod is slidably arranged in the regulating cavity, and the lock rod is detachably connected to the lock core; an unlocking component, the unlocking component includes a magnetic ring for magnetically moving the lock rod, and a driving member adapted to the lock hole and used for driving the lock core to rotate. By arranging a cover body at one end of the valve pipe and arranging a baffle and a lock core inside the cover body, the baffle has the function of locking the valve. When the staff opens or closes the valve, it is necessary to use the unlocking component to cooperate to unlock the lock rod and the lock core and rotate the driving member to rotate the lock core to adjust the height of the baffle to achieve. The present invention can strengthen the control and management of the gas valve, avoid user misoperation and reduce the probability of malicious damage and unauthorized opening by users, thereby ensuring gas use safety.

[0074] It should be understood that the application of the present invention is not limited to the above examples. For those of ordinary skill in the art, improvements or changes can be made according to the above description. All these improvements and changes should fall within the protection scope of the appended claims of the present invention.

Claims

1. A gas safety interlock valve, characterized in that, The gas safety interlock valve includes: A valve pipe, on one side of which there is a cover body. Inside the valve pipe, a baffle plate is arranged radially and slidably corresponding to the position of the cover body. A lock core is rotatably positioned inside the cover body. One end of a lead screw arranged on one side of the lock core is rotatably connected to one end of the baffle plate. A lock hole is arranged on the other side of the lock core, and the position corresponding to the lock hole on the cover body is hollowed out. The side wall of the cover body is hollowed out to form an adjustment cavity, and a lock rod is slidably arranged inside the adjustment cavity. The lock rod is detachably connected to the lock core. An unlocking assembly, which includes a magnetic ring for magnetically moving the lock rod and a driving member adapted to the lock hole and used for driving the lock core to rotate.

2. The gas safety interlock valve according to claim 1, characterized in that, The valve pipe includes an extension part that protrudes downward from the valve pipe. The baffle plate is sleeved and slidably arranged inside the extension part. The cover body is fixedly sleeved outside the extension part, and the lead screw penetrates through the extension part to be connected to the baffle plate.

3. The gas safety interlock valve according to claim 2, characterized in that, A fitting groove is arranged at the position corresponding to the extension part in the inner cavity of the valve pipe. The shape of the fitting groove is adapted to the shape of the corresponding end of the baffle plate. When the baffle plate moves to a predetermined position inside the valve pipe, one end of the baffle plate is embedded in the fitting groove.

4. The gas safety interlock valve according to claim 2, characterized in that, The adjustment cavity is arranged in the vertical direction. A locking groove is arranged at the position corresponding to the adjustment cavity on the lock core. The shape of the locking groove is adapted to the shape of the corresponding end of the lock rod. The lock rod is clamped in the locking groove under the action of gravity. The part of the cover body corresponding to the lock rod is partially transparent.

5. The gas safety interlock valve according to claim 1, characterized in that, The cross-sectional shape of the lock hole is a regular polygon, and the cross-sectional shape of the hollowed-out part corresponding to the lock hole on the cover body is a circle. The cross-sectional shape of the driving member is adapted to the cross-sectional shape of the lock hole. A plurality of guiding surfaces are arranged at the end of the driving member, and the plurality of guiding surfaces are inclined at a predetermined angle.

6. The gas safety interlock valve according to claim 5, characterized in that, The cross-sectional shape of the lock hole is a triangle. Flap pieces are respectively arranged along the triangular edge of the lock hole on the outer side of the lock core. The flap pieces are respectively rotatably connected to the lock core and are driven by compression springs to abut against each other. The flap pieces are original magnet flap pieces. When the magnetic ring is sleeved on the position of the cover body corresponding to the lock hole, the flap pieces are separated from each other.

7. The gas safety interlock valve according to claim 1, wherein, A ball valve switch assembly is arranged at one end inside the valve pipe. The ball valve switch assembly includes: A connecting rod that penetrates and is rotatably positioned on the valve pipe. A handle fixedly arranged at one end of the connecting rod corresponding to the outside of the valve pipe. A sphere fixedly arranged at one end of the connecting rod corresponding to the inside of the valve pipe. An opening is provided through the center of the sphere.

8. The gas safety interlock valve according to claim 7, characterized in that, A reverse flow prevention assembly is arranged at the other end inside the valve pipe. The reverse flow prevention assembly includes: A snap ring fixedly arranged inside the valve pipe. A sealing plate that abuts against the side of the snap ring away from the sphere. A base is arranged inside the valve pipe, and the sealing plate is elastically connected to the base.

9. The gas safety interlock valve according to claim 8, characterized in that, The reverse flow prevention assembly further includes: A telescopic rod, the telescopic rod is arranged along the central axis of the valve tube, one end of the telescopic rod is fixedly connected to the base, and the other end of the telescopic rod is fixedly connected to the center of the sealing plate; A conical spring, the end with a larger diameter on the conical spring is fixedly connected to the baffle plate, and the end with a smaller diameter on the conical spring is fixedly connected to the base.

10. The gas safety interlock valve according to claim 1, wherein, Connection parts are respectively arranged at both ends of the valve tube, and continuous threads are arranged in the connection parts; The outer side of the cover body is smoothly arranged.

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