Thin film stop valve

Abstract

The utility model provides a thin film stop valve, and belongs to the technical field of thin film stop valves. Comprising a body, connecting ends are arranged on the two sides of the body, and filtering assemblies are arranged on the inner walls of the connecting ends. The positioning cylinder on one side of the filter screen is inserted into the clamping groove, after the positioning cylinder is completely inserted into the clamping groove, the fixing pin is pressed from the conical groove, the ball is driven to move to the spherical hole from the annular groove in the outer wall of the fixing pin in the moving process of the fixing pin, and then the fixing pin is loosened; the fixing pins start to reset under the action of the springs, the outer walls of the fixing pins abut against the balls, the balls abut against the spherical holes and the inner walls of the clamping grooves, and when disassembly is needed, only the steps need to be repeated, harmful gas can be filtered through the filter screen, and the practicability is high. Therefore, the residual harmful gas is prevented from influencing the worker during maintenance by the worker, and meanwhile, the convenience of dismounting and mounting the filter screen can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film cut-off valves, in particular to a film cut-off valve. Background Art

[0002] The cut-off valve is a type of actuator in the automation system, which is composed of a multi-spring pneumatic diaphragm actuator or a floating piston actuator and a regulating valve. The cut-off valve has a wide range of uses and can be used to cut off gas, combustion air, cold air and flue gas, etc.

[0003] When the shut-off valve is in use, it often blocks harmful gases. When the shut-off valve is maintained, the shut-off valve needs to be removed. When the shut-off valve is opened, these harmful gases may remain in the shut-off valve, and may overflow when it is opened, causing an impact on the staff. Therefore, in order to deal with the above problems and defects, a membrane shut-off valve is urgently needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a membrane cut-off valve to solve the problem that the existing cut-off valve often blocks harmful gases when in use, and when the cut-off valve is maintained, the cut-off valve needs to be removed. When the cut-off valve is opened, these harmful gases may remain in the cut-off valve, and may overflow when it is opened, causing an impact on the staff.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A diaphragm cut-off valve comprises: a body, connecting ends are arranged on both sides of the body, and a filter assembly is arranged on the inner wall of the connecting end; the filter assembly comprises a circular groove with an outer wall of the connecting end, a clamping groove is arranged on the inner wall of the circular groove, a filter net is clamped on the inner wall of the circular groove, a circular hole is arranged on the outer wall of the filter net, a positioning cylinder is arranged on the side of the circular hole close to the clamping groove, a spring is fixedly assembled on the inner wall of the positioning cylinder, a fixing pin is fixedly assembled on the end of the spring, a spherical hole is arranged on the outer wall of the positioning cylinder, and a ball is rollingly connected to the inner wall of the spherical hole.

[0007] The outer wall of the filter screen is provided with a tapered groove, and the tapered groove is located at the end of the circular hole.

[0008] A sealing gasket is fixedly mounted on the inner wall of the circular groove, and a side of the sealing gasket away from the circular groove abuts against the filter screen.

[0009] A groove is provided on the peripheral side of the connecting end, and an anti-collision strip is fixedly mounted on the inner wall of the groove.

[0010] The number of the springs and the fixing pins is four, and the four springs and the fixing pins are evenly distributed on the peripheral side of the filter screen.

[0011] A circular button is arranged on one side of the fixing pin close to the conical groove, and an annular groove is arranged on one side of the fixing pin close to the ball.

[0012] Compared with the prior art, the utility model has at least the following beneficial effects:

[0013] 1. In the above scheme, the positioning cylinder on one side of the filter is inserted into the slot. When the positioning cylinder is fully inserted into the slot, the fixing pin is pressed from the tapered slot. During the movement of the fixing pin, the ball is driven to move from the annular groove on the outer wall of the fixing pin to the spherical hole. At this time, the fixing pin is released. Since the ball is located at the spherical hole, the fixing pin begins to reset under the action of the spring, and the outer wall of the fixing pin abuts against the ball, so that the ball abuts against the spherical hole and the inner wall of the slot to complete the fixing of the filter. When disassembly is required, only the above steps need to be repeated, which is conducive to filtering harmful gases through the filter, thereby preventing residual harmful gases from affecting the staff during maintenance, and at the same time improving the convenience of disassembly and assembly of the filter.

[0014] 2. In the above scheme, by providing the grooves and the anti-collision strips, it is helpful to improve the anti-collision ability of the main body, thereby increasing the service life of the device and ensuring the normal operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the membrane cut-off valve;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the membrane cut-off valve from the first perspective;

[0018] Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram of the three-dimensional structure.

[0019] [Reference Signs]

[0020] 1. Main body; 2. Connection end;

[0021] 3. Filter assembly; 31. Round groove; 32. Card slot; 33. Filter screen; 34. Round hole; 35. Positioning cylinder; 36. Spring; 37. Fixing pin; 38. Spherical hole; 39. Ball;

[0022] 4. Conical groove; 5. Sealing gasket; 6. Groove; 7. Anti-collision strip.

[0023] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0024] The following is a detailed description of a thin film cut-off valve provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are listed as the best and preferred embodiments, and other alternatives can also be used by technicians in some known technical fields; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0025] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0026] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0027] It will be understood that the meaning of “on,” “over,” and “above” in this disclosure should be interpreted in the broadest manner, so that “on” means not only “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” means not only “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0028] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the utility model provides a thin film cut-off valve, comprising: a body 1, connecting ends 2 are arranged on both sides of the body 1, and a filter assembly 3 is arranged on the inner wall of the connecting end 2; the filter assembly 3 comprises a circular groove 31 with an outer wall of the connecting end 2, a clamping groove 32 is arranged on the inner wall of the circular groove 31, a filter screen 33 for filtering harmful gases is clamped on the inner wall of the circular groove 31, a circular hole 34 is arranged on the outer wall of the filter screen 33, a positioning cylinder 35 is arranged on the side of the circular hole 34 close to the clamping groove 32, a spring 36 for providing elastic force is fixedly assembled on the inner wall of the positioning cylinder 35, a fixing pin 37 is fixedly assembled on the end of the spring 36, a spherical hole 38 is arranged on the outer wall of the positioning cylinder 35, a ball 39 is rollingly connected to the inner wall of the spherical hole 38, a round button is arranged on the side of the fixing pin 37 close to the conical groove 4, and an annular groove is arranged on the side of the fixing pin 37 close to the ball 39, and the limitation of the fixing pin 37 is conducive to pressing the fixing pin 37 and facilitating the recovery of the ball 39.

[0030] like Figure 2 and Figure 3 As shown, a conical groove 4 is provided on the outer wall of the filter screen 33 , and the conical groove 4 is located at the end of the circular hole 34 . The conical groove 4 is provided to facilitate the staff to press the fixing pin 37 .

[0031] like Figure 2 and Figure 3 As shown, a sealing gasket 5 is fixedly mounted on the inner wall of the circular groove 31 , and the side of the sealing gasket 5 away from the circular groove 31 abuts against the filter screen 33 . The provision of the sealing gasket 5 is beneficial to improving the sealing performance of the connection between the filter screen 33 and the circular groove 31 .

[0032] like Figure 1 and Figure 2 As shown, a groove 6 is provided on the peripheral side of the connecting end 2, and an anti-collision strip 7 is fixedly installed on the inner wall of the groove 6. The provision of the groove 6 and the anti-collision strip 7 is beneficial to improving the anti-collision capability of the main body 1, thereby increasing the service life of the device and ensuring the normal operation of the device.

[0033] like Figure 2 and Figure 3As shown, there are four springs 36 and fixing pins 37, and the four springs 36 and fixing pins 37 are evenly distributed around the filter 33. By limiting the number and position of the springs 36 and fixing pins 37, it is helpful to improve the firmness and stability of the fixing of the filter 33.

[0034] The technical solution provided by the utility model is that during operation, the positioning cylinder 35 on one side of the filter screen 33 is inserted into the card slot 32. When the positioning cylinder 35 is fully inserted into the card slot 32, the fixing pin 37 is pressed from the conical groove 4. During the movement of the fixing pin 37, the ball 39 is driven to move from the annular groove of the outer wall of the fixing pin 37 to the spherical hole 38. At this time, the fixing pin 37 is released. Since the ball 39 is located at the spherical hole 38, the fixing pin 37 begins to reset under the action of the spring 36, and the outer wall of the fixing pin 37 abuts against the ball 39, so that the ball 39 abuts against the spherical hole 38 and the inner wall of the card slot 32, thereby completing the fixing of the filter screen 33. When it is necessary to disassemble, the filter screen 33 can be disassembled by simply repeating the above steps.

[0035] The groove 6 and the anti-collision strip 7 are provided to improve the anti-collision capability of the main body 1, thereby increasing the service life of the device and ensuring the normal operation of the device.

[0036] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0037] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A diaphragm cut-off valve, characterized in that: include: A body (1), wherein connecting ends (2) are provided on both sides of the body (1), and filtering components (3) are provided on the inner walls of the connecting ends (2); The filter assembly (3) comprises a circular groove (31) provided with an outer wall of the connection end (2); a clamping groove (32) provided on the inner wall of the circular groove (31); a filter screen (33) clamped on the inner wall of the circular groove (31); a circular hole (34) provided on the outer wall of the filter screen (33); a positioning cylinder (35) provided on a side of the circular hole (34) close to the clamping groove (32); a spring (36) fixedly mounted on the inner wall of the positioning cylinder (35); a fixing pin (37) fixedly mounted on the end of the spring (36); a spherical hole (38) provided on the outer wall of the positioning cylinder (35); and a ball (39) rollingly connected to the inner wall of the spherical hole (38).

2. The diaphragm cut-off valve according to claim 1, characterized in that: The outer wall of the filter screen (33) is provided with a conical groove (4), and the conical groove (4) is located at the end of the circular hole (34).

3. The diaphragm cut-off valve according to claim 1, characterized in that: A sealing gasket (5) is fixedly mounted on the inner wall of the circular groove (31), and a side of the sealing gasket (5) away from the circular groove (31) abuts against the filter screen (33).

4. The diaphragm cut-off valve according to claim 1, characterized in that: A groove (6) is provided on the peripheral side of the connection end (2), and an anti-collision strip (7) is fixedly mounted on the inner wall of the groove (6).

5. The diaphragm cut-off valve according to claim 1, characterized in that: The number of the springs (36) and the fixing pins (37) is four, and the four springs (36) and the fixing pins (37) are evenly distributed on the circumference of the filter screen (33).

6. The diaphragm cut-off valve according to claim 1, characterized in that: A circular button is provided on one side of the fixing pin (37) close to the conical groove (4), and an annular groove is provided on one side of the fixing pin (37) close to the ball (39).

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