Leak-proof gas meter flow stopping device

Abstract

The utility model relates to the technical field of gas meters, in particular to a leak-proof gas meter flow stopping device which comprises a pipe body, one end of the pipe body is connected with a gas pipe, the other end of the pipe body is connected with a gas inlet pipe of a gas meter, a limiting ring is installed in the pipe body, a plurality of sliding grooves are formed in the inner wall of the pipe body on one side of the limiting ring, and the sliding grooves are communicated with the gas pipe. The sliding groove is slidably connected with a sliding block, the sliding block is fixedly connected with the outer wall of a baffle, a reset spring is installed between the sliding block and the inner wall of the sliding groove, the reset spring is connected with a telescopic rod in a sleeving mode, and one end of the telescopic rod is fixedly connected with the bottom of the sliding block. By arranging a return spring, the baffle can return to the original position through the resilience of the return spring, the sealing performance of the device is improved, the baffle can be flexibly opened, the gas flow cannot be affected, and the heating efficiency of a pipeline network is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas meters, in particular to a flow stopping device for a leakage-proof gas meter. Background Art

[0002] There are two air vents on the top of the gas meter, one of which is connected to the air inlet pipe and the other is connected to the air outlet pipe. The gas should flow in one direction in the network formed by the gas meter and its connected pipes. Once the gas backflow occurs, it will not only cause confusion in the gas meter counting and incorrectly record the actual gas usage, but also increase the risk of gas leakage and increase the safety hazards in gas use. Therefore, the one-way flow control of the gas meter is an important means to improve the performance of the gas meter.

[0003] At present, most gas meters use steel ball type one-way valves as stop valves. The structure of this steel ball type one-way valve is relatively complex, which increases the cost of the entire gas meter. In addition, since the steel ball in the one-way valve is relatively heavy, the pressure of the gas cannot fully dislodge the steel ball, making it impossible for the steel ball to open and close flexibly, resulting in a reduction in the actual aperture that can be used for ventilation in the pipeline, greatly affecting the gas flow rate, and ultimately causing a significant loss in the heating efficiency of the pipeline network where such gas meters are installed, affecting the normal use of gas by users.

[0004] Therefore, it is necessary to provide a leakage-proof gas meter flow-stopping device to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a flow stopping device for a leakage-proof gas meter.

[0006] The utility model provides a leakage-proof gas meter flow stopping device, comprising: a tube body which is larger in the middle and smaller at both ends, one end of the tube body is connected to the gas pipe, the other end of the tube body is connected to the air inlet pipe of the gas meter, a limiting ring is installed inside the tube body, a plurality of sliding grooves are provided on the inner wall of the tube body on one side of the limiting ring, the sliding groove is slidably connected to a slider, the slider is fixedly connected to the outer wall of a baffle, the slider and the baffle are an integrated structure, a return spring is installed between the slider and the inner wall of the sliding groove, the return spring sleeve is connected to a telescopic rod, one end of the telescopic rod is fixedly connected to the bottom of the slider, and the other end of the telescopic rod is fixedly connected to the bottom end inside the sliding groove.

[0007] Preferably, the tube body includes a front end, a middle end and a rear end, the front end, the middle end and the rear end are an integrated structure, the inner diameters of the front end and the rear end are consistent, the inner diameter of the middle end is larger than the inner diameter of the front end, the limiting ring is arranged at the connection between the front end and the middle end, and the sliding groove is arranged on the inner wall of the middle end.

[0008] Preferably, a sealing ring is provided at the bottom of the limiting ring, and a sealing groove cooperating with the sealing ring is provided at the top of the baffle.

[0009] Preferably, a sealing ring made of rubber material is bonded to the top of the baffle on one side of the sealing groove.

[0010] Preferably, the outer walls of the front end and the rear end are respectively provided with front threads and rear threads, the front threads and the rear threads are respectively threadedly connected to the front fixing tube and the rear fixing tube, and the outer walls of the front fixing tube and the rear fixing tube are threadedly connected to the two ends of the protective tube.

[0011] Preferably, a rotation groove is provided on the end surface of the sliding block, the rotation groove is rotationally connected to a rotating wheel, the rotating wheel is rollingly connected to a rotating bar, and the rotating bar is arranged on the inner wall of the sliding groove.

[0012] Compared with the related art, the anti-leakage gas meter flow stop device provided by the utility model has the following beneficial effects:

[0013] 1. The utility model provides a pipe body with a large middle and small ends, so that the baffle and the limit ring can be installed in the middle of the pipe body. The difference between the inner area of ​​the middle of the pipe body and the baffle is consistent with the inner area of ​​the two ends. The baffle can only move toward one end through the limit ring, thereby realizing the one-way flow of gas. By providing a return spring, the return spring can be used to return the baffle to its original position when the gas supply is stopped, thereby closing the pipeline and improving the sealing of the device. In addition, since the baffle can be opened flexibly, it will not affect the gas flow, thereby improving the heating efficiency of the pipeline network.

[0014] 2. The utility model provides a sealing ring and a sealing groove matched therewith, and the sealing groove can be used to limit the sealing ring, thereby improving the sealing performance of the connection between the limiting ring and the baffle, and further improving the sealing performance of the connection by providing a sealing ring;

[0015] 3. The utility model provides a protective tube on the outside of the tube body, through which the outer wall of the tube body can be protected, which improves the sealing of the tube body on the one hand, and makes the rulers of various positions of the tube body consistent on the other hand, which is convenient for users to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a preferred embodiment of a flow-stopping device for a leak-proof gas meter provided by the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the structure inside the tube body shown;

[0018] Figure 3 for Figure 1 The schematic diagram of the structure of the limit ring and the baffle shown;

[0019] Numbers in the figure: 1, tube body; 2, front fixed tube; 3, rear fixed tube; 4, protective tube; 5, front end; 6, middle end; 7, rear end; 8, limiting ring; 9, baffle; 10, slider; 11, sliding groove; 12, return spring; 13, telescopic rod; 14, rotating bar; 15, rotating groove; 16, rotating wheel; 17, sealing groove; 18, sealing ring; 19, sealing ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Generally, the components of the embodiment of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, if the terms "first", "second", "third", etc. appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The following is a detailed description of a new type of anti-leakage gas meter flow stop device in conjunction with a specific embodiment.

[0027] refer to Figures 1 to 3 The utility model provides a leakage-proof gas meter flow-stopping device, comprising: a tube body 1 which is large in the middle and small at both ends, one end of the tube body 1 is connected to the gas pipe, and the other end of the tube body 1 is connected to the air inlet pipe of the gas meter, a limiting ring 8 is installed inside the tube body 1, and a plurality of sliding grooves 11 are provided on the inner wall of the tube body 1 on one side of the limiting ring 8, the sliding groove 11 is slidably connected to a slider 10, the slider 10 is fixedly connected to the outer wall of a baffle 9, the slider 10 and the baffle 9 are an integrated structure, a return spring 12 is installed between the slider 10 and the inner wall of the sliding groove 11, the return spring 12 is sleeved and connected to a telescopic rod 13, one end of the telescopic rod 13 is fixedly connected to the bottom of the slider 10, and the other end of the telescopic rod 13 is fixedly connected to the bottom end inside the sliding groove 11.

[0028] In the embodiments of the present invention, reference is made to Figure 2 As shown, the tube body 1 includes a front end 5, a middle end 6 and a rear end 7, and the front end 5, the middle end 6 and the rear end 7 are an integrated structure. The inner diameters of the front end 5 and the rear end 7 are consistent, the inner diameter of the middle end 6 is larger than the inner diameter of the front end 5, the limit ring 8 is arranged at the connection between the front end 5 and the middle end 6, and the sliding groove 11 is arranged on the inner wall of the middle end 6.

[0029] It should be noted that: by setting a tube body 1 that is larger in the middle and smaller at both ends, the baffle 9 and the limit ring 8 can be installed in the middle of the tube body 1, and the difference in area between the interior of the middle of the tube body 1 and the baffle 9 is consistent with the interior area of ​​the two ends. Through the limit ring 8, the baffle 9 can only move toward one end, thereby realizing the unidirectional flow of gas, and by setting a return spring 12, the restoring property of the return spring 12 can be utilized to return the baffle 9 to its original position when the gas supply is stopped, thereby closing the pipeline and improving the sealing of the device. In addition, since the baffle 9 can be opened flexibly, it will not affect the gas flow, thereby improving the heating efficiency of the pipeline network.

[0030] In the embodiments of the present invention, reference is made to Figure 3 As shown, a sealing ring 19 is provided at the bottom of the limiting ring 8 , and a sealing groove 17 matched with the sealing ring 19 is provided at the top of the baffle plate 9 .

[0031] In the embodiments of the present invention, reference is made to Figure 3 As shown, a sealing ring 18 made of rubber material is bonded to the top of the baffle 9 on one side of the sealing groove 17 .

[0032] It should be noted that: by providing a sealing ring 19 and a sealing groove 17 that cooperates therewith, the sealing groove 17 can be used to limit the sealing ring 19, thereby improving the sealing of the connection between the limiting ring 8 and the baffle 9, and by providing a sealing ring 18, the sealing of the connection can be further improved.

[0033] In the embodiments of the present invention, reference is made to Figure 1 As shown, the outer walls of the front end 5 and the rear end 7 are respectively provided with front threads and rear threads, which are respectively threadedly connected to the front fixing tube 2 and the rear fixing tube 3, and the outer walls of the front fixing tube 2 and the rear fixing tube 3 are threadedly connected to the two ends of the protective tube 4.

[0034] It should be noted that: by providing a protective tube 4 outside the tube body 1, the outer wall of the tube body 1 can be protected by the protective tube 4, which on the one hand improves the sealing of the tube body 1, and on the other hand makes the dimensions of various positions of the tube body 1 consistent, which is convenient for users to install.

[0035] In the embodiments of the present invention, reference is made to Figure 3 As shown, a rotation groove 15 is provided on the end surface of the slider 10 , and the rotation groove 15 is rotatably connected to a rotation wheel 16 , and the rotation wheel 16 is rollingly connected to a rotation bar 14 , and the rotation bar 14 is arranged on the inner wall of the sliding groove 11 .

[0036] It should be noted that by providing the rotating wheel 16 and the rotating bar 14 , the slider 10 can be changed from a sliding connection to a rotating connection, thereby reducing the friction between the slider 10 and the slide groove, making it easier to move the baffle 9 up and down.

[0037] The working principle of the anti-leakage gas meter flow stop device provided by the utility model is as follows:

[0038] By setting a tube body 1 that is larger in the middle and smaller at both ends, the baffle 9 and the limiting ring 8 can be installed in the middle of the tube body 1. The difference in area between the interior of the middle of the tube body 1 and the baffle 9 is consistent with the interior area of ​​the two ends. The baffle 9 can only move toward one end through the limiting ring 8, thereby realizing the unidirectional flow of the gas. By setting a return spring 12, the restoring property of the return spring 12 can be utilized to return the baffle 9 to its original position when the gas supply is stopped, thereby closing the pipeline and improving the sealing of the device. In addition, since the baffle 9 can be opened flexibly, it will not affect the gas flow, thereby improving the heating efficiency of the pipeline network.

[0039] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0040] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flow stopping device for a leak-proof gas meter, characterized in that: include: A tube body (1) having a large middle and small ends, one end of the tube body (1) being connected to a gas pipe, and the other end of the tube body (1) being connected to an intake pipe of a gas meter, a limit ring (8) being installed inside the tube body (1), a plurality of sliding grooves (11) being provided on the inner wall of the tube body (1) on one side of the limit ring (8), the sliding groove (11) being slidably connected to a slider (10), the slider (10) being fixedly connected to the outer wall of a baffle (9), the slider (10) and the baffle (9) being an integrated structure, and a return spring (12) being installed between the slider (10) and the inner wall of the sliding groove (11).

2. A flow-stopping device for a leak-proof gas meter according to claim 1, characterized in that: The return spring (12) is sleeve-connected to the telescopic rod (13), one end of the telescopic rod (13) is fixedly connected to the bottom of the sliding block (10), and the other end of the telescopic rod (13) is fixedly connected to the bottom end inside the sliding groove (11).

3. A flow-stopping device for a leak-proof gas meter according to claim 2, characterized in that: The tube body (1) comprises a front end (5), a middle end (6) and a rear end (7); the front end (5), the middle end (6) and the rear end (7) are an integrated structure; the inner diameters of the front end (5) and the rear end (7) are consistent; the inner diameter of the middle end (6) is larger than the inner diameter of the front end (5); the limit ring (8) is arranged at the connection between the front end (5) and the middle end (6); and the sliding groove (11) is arranged on the inner wall of the middle end (6).

4. A flow-stopping device for a leak-proof gas meter according to claim 3, characterized in that: A sealing ring (19) is provided at the bottom of the limiting ring (8), and a sealing groove (17) matching with the sealing ring (19) is provided at the top of the baffle (9).

5. A flow-stopping device for a leak-proof gas meter according to claim 4, characterized in that: A sealing ring (18) made of rubber material is bonded to the top of the baffle (9) on one side of the sealing groove (17).

6. The anti-leakage gas meter flow stopping device according to claim 3, characterized in that: The outer walls of the front end (5) and the rear end (7) are respectively provided with a front thread and a rear thread, the front thread and the rear thread are respectively threadedly connected to the front fixing tube (2) and the rear fixing tube (3), and the outer walls of the front fixing tube (2) and the rear fixing tube (3) are threadedly connected to the two ends of the protective tube (4).

7. The anti-leakage gas meter flow stopping device according to claim 1, characterized in that: The end surface of the sliding block (10) is provided with a rotation groove (15), the rotation groove (15) is rotationally connected to a rotation wheel (16), the rotation wheel (16) is rollingly connected to a rotation bar (14), and the rotation bar (14) is arranged on the inner wall of the sliding groove (11).

Images