Straight-through type pneumatic diaphragm regulating valve

Abstract

The utility model provides a straight-through type pneumatic diaphragm regulating valve, which relates to the technical field of regulating valves, and comprises a regulating valve body, a valve rod is fixedly connected to the surface of the regulating valve body, a pneumatic actuator is fixedly connected to the surface of the regulating valve body, a filter device is arranged on the surface of the regulating valve body, and the valve rod and the pneumatic actuator are fixedly connected to the surface of the regulating valve body. The filter device comprises a mounting plate, a hole groove is formed in the arc face of one side of the adjusting valve body in a penetrating mode, and the mounting plate is connected to the inner wall of the hole groove in the surface of the adjusting valve body in a clamped mode. The problems that in the prior art, due to the fact that the fluid can rub with part of components of the pneumatic diaphragm control valve, the components are damaged, the normal using effect of the pneumatic diaphragm control valve is affected, accurate and stable adjustment and control over the fluid are difficult, and the service life of the pneumatic diaphragm control valve is shortened are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a straight-through pneumatic film regulating valve. Background Art

[0002] Pneumatic diaphragm control valve is one of the commonly used control valves for industrial automation control. It uses compressed air as the power source and controls the fluid flow by adjusting the valve opening.

[0003] When in use, the traditional pneumatic diaphragm control valve is installed in the fluid pipeline, and then the fluid flow in the pipeline is controlled by rotating the valve stem. However, it is found in actual use that some fluids contain particulate impurities. When these impurities pass through the pneumatic diaphragm control valve, they will rub against some parts of the pneumatic diaphragm control valve. Over time, this will cause damage to the parts, thereby affecting the normal use of the pneumatic diaphragm control valve, making it difficult to accurately and stably regulate and control the fluid, and shortening the service life of the pneumatic diaphragm control valve. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that some fluids contain particulate impurities. When these impurities pass through the pneumatic diaphragm regulating valve, they will rub against some parts of the pneumatic diaphragm regulating valve. In the long run, these parts will be damaged, thereby affecting the normal use of the pneumatic diaphragm regulating valve, making it difficult to accurately and stably regulate and control the fluid, and shortening the service life of the pneumatic diaphragm regulating valve. The straight-through pneumatic diaphragm regulating valve is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a straight-through pneumatic diaphragm regulating valve, including a regulating valve body, a valve stem is fixedly connected to the surface of the regulating valve body, a pneumatic actuator is fixedly connected to the surface of the regulating valve body, a filtering device is arranged on the surface of the regulating valve body, the filtering device includes a mounting plate, a hole groove is penetrated through the circular arc surface of one side of the regulating valve body, the mounting plate is clamped on the inner wall of the hole groove on the surface of the regulating valve body, a filter screen is fixedly connected to the inner wall of the mounting plate, a connecting plate is fixedly connected to the circular arc surface of the mounting plate, a screw is fixedly connected to the circular arc surface of the regulating valve body, the screw and the surface of the connecting plate are penetrated and inserted, and a nut is threadedly connected to the circular arc surface of the screw.

[0006] The effect achieved by the above-mentioned components is that when the regulating valve body is regulating the liquid flow, it can better prevent impurity particles in the liquid from entering the regulating valve body and rubbing against its components, thereby ensuring that the components of the regulating valve body are not easily damaged, extending the service life of the regulating valve body, and improving the use effect and work efficiency of the regulating valve body.

[0007] Preferably, a collection frame is clamped on the inner wall of one side of the mounting plate, the inner wall cross-section of the collection frame is conical, a fixing block is fixedly connected to the surface of the collection frame, a screw is threadedly connected to the surface of the fixing block, and the screw is threadedly connected to the surface of the mounting plate.

[0008] The effect achieved by the above components is: through the setting of the collection frame, the particulate impurities in the liquid intercepted by the filter screen are more concentrated and less likely to be dispersed, which is convenient for processing and improves the use effect of the filtering device.

[0009] Preferably, a mounting groove is provided on one side surface of the fixing block, and an inner wall of the mounting groove is snap-fitted to a surface of the screw.

[0010] The effect achieved by the above components is that: through the setting of the installation groove, the screw is installed on the fixing block more smoothly and stably, thereby making the installation plate more adaptable when assembled on the regulating valve body.

[0011] Preferably, an operating block is fixedly connected to the surface of the nut, and a plurality of anti-slip protrusions are provided on the surface of the operating block.

[0012] The effects achieved by the above components are: through the setting of the operating block, the nut is more convenient to use, and the connecting plate is installed more firmly, further improving the convenience of using the filtering device.

[0013] Preferably, a positioning groove is provided on one side surface of the connecting plate, a positioning plate is clamped on the inner wall of the positioning groove, and the positioning plate is fixedly connected to the surface of the regulating valve body.

[0014] The effects achieved by the above components are: through the clamping arrangement of the positioning groove and the positioning plate, the position of the connecting plate is made more stable, thereby making the installation plate more stably installed, thereby improving the stability of the filter screen.

[0015] Preferably, a sealing device is provided on the arc surface of the regulating valve body, and the sealing device includes a mounting ring, the inner wall of the mounting ring is fixedly connected to a rubber pad, the mounting ring is clamped on the arc surface of the regulating valve body, and threaded rods are threadedly connected through both sides of the surface of the mounting ring.

[0016] The effect achieved by the above components is that the filter device can be installed more stably when in use, and gaps are not likely to occur at the installation position, thereby not easily causing leakage of liquid in the regulating valve body, thereby ensuring the normal use of the filter device and improving its use effect.

[0017] Preferably, a fixing ring is threadedly connected on the arc surface of the threaded rod, and the fixing ring abuts against one side surface of the mounting ring.

[0018] The effect achieved by the above components is: through the setting of the fixing ring, the threaded rod is more stably installed on the mounting ring, and is not prone to rotational looseness, thereby ensuring the stable installation of the mounting ring.

[0019] Preferably, two reinforcement holes are provided on the surface of the mounting ring, and reinforcement blocks are respectively clamped on the inner walls of the two reinforcement holes, and the reinforcement blocks are fixedly connected to the surface of the regulating valve body.

[0020] The effect achieved by the above components is: through the clamping setting of the reinforcement block and the reinforcement hole, the position of the mounting ring on the regulating valve body is more stable and accurate, and then it is more stably installed on the surface of the mounting plate, thereby improving the use effect of the sealing device.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are:

[0022] In the utility model, when the regulating valve body is regulating the liquid flow, it can better prevent foreign particles in the liquid from entering the regulating valve body and rubbing against its components, thereby ensuring that the components of the regulating valve body are not easily damaged, extending the service life of the regulating valve body, and improving the use effect and work efficiency of the regulating valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0024] Figure 2 This is a schematic diagram of the exploded three-dimensional structure of the filtering device of the present application;

[0025] Figure 3 For this application Figure 2 A schematic diagram of the side three-dimensional structure;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the sealing device of the present application.

[0027] Legend: 1. Control valve body; 2. Valve stem; 3. Pneumatic actuator; 4. Filter device; 41. Mounting plate; 42. Filter screen; 43. Connecting plate; 44. Screw; 45. Nut; 46. Collecting frame; 47. Fixing block; 48. Screw; 49. Mounting groove; 410. Operating block; 411. Positioning groove; 412. Positioning plate; 5. Sealing device; 51. Mounting ring; 52. Rubber pad; 53. Threaded rod; 54. Fixing ring; 55. Reinforcement block; 56. Reinforcement hole. DETAILED DESCRIPTION

[0028] Embodiment 1, as Figure 1As shown, a straight-through pneumatic diaphragm regulating valve includes a regulating valve body 1, a valve stem 2 is fixedly connected to the surface of the regulating valve body 1, a pneumatic actuator 3 is fixedly connected to the surface of the regulating valve body 1, a filtering device 4 is arranged on the surface of the regulating valve body 1, and a sealing device 5 is arranged on the arc surface of the regulating valve body 1.

[0029] Reference Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment: the filter device 4 includes a mounting plate 41, a hole groove is opened through the arc surface of one side of the regulating valve body 1, the mounting plate 41 is clamped on the inner wall of the hole groove on the surface of the regulating valve body 1, the inner wall of the mounting plate 41 is fixedly connected with a filter screen 42, the arc surface of the mounting plate 41 is fixedly connected with a connecting plate 43, the arc surface of the regulating valve body 1 is fixedly connected with a screw 44, the screw 44 and the surface of the connecting plate 43 are inserted through, and the arc surface of the screw 44 is threadedly connected with a nut 45. When the regulating valve body 1 is installed in the liquid circulation pipeline for deployment and use, the filter device 4 is installed on the regulating valve In the main body 1, first, the mounting plate 41 is snapped into the hole groove on the surface of the regulating valve body 1, so that the filter screen 42 is placed inside the regulating valve body 1, and at the same time, the connecting plate 43 on the mounting plate 41 is inserted through the screw 44, and then the nut 45 is threadedly connected to the screw 44. At this time, when the regulating valve body 1 is regulating the liquid flow, it can better prevent the impurity particles in the liquid from entering the regulating valve body 1 and rubbing against its components, thereby ensuring that the components of the regulating valve body 1 are not easily damaged, extending the service life of the regulating valve body 1, and improving the use effect and work efficiency of the regulating valve body 1.

[0030] Reference Figure 1 , Figure 2 and Figure 3 As shown, in the present embodiment: a collecting frame 46 is clamped on the inner wall of one side of the mounting plate 41, the inner wall cross-section of the collecting frame 46 is conical, the surface of the collecting frame 46 is fixedly connected with a fixing block 47, the surface of the fixing block 47 is threadedly connected with a screw 48, the screw 48 is threadedly connected to the surface of the mounting plate 41, and through the setting of the collecting frame 46, the particulate impurities in the liquid intercepted by the filter screen 42 are more concentrated and less likely to be dispersed, which is convenient for handling, thereby improving the use effect of the filtering device 4, and a mounting groove 49 is provided on the surface of one side of the fixing block 47, and the inner wall of the mounting groove 49 is clamped with the surface of the screw 48. Through the setting of the mounting groove 49, the screw 48 is installed on the fixing block 47 more smoothly and stably, thereby making the mounting plate 41 more adaptable when assembled on the regulating valve body 1.

[0031] Reference Figure 1 , Figure 2 and Figure 3As shown, in the present embodiment: an operating block 410 is fixedly connected to the surface of the nut 45, and a plurality of anti-slip protrusions are provided on the surface of the operating block 410. Through the provision of the operating block 410, the nut 45 is more convenient to use, and the connecting plate 43 is more firmly installed, which further improves the convenience of using the filter device 4. A positioning groove 411 is provided on one side surface of the connecting plate 43, and a positioning plate 412 is clamped on the inner wall of the positioning groove 411. The positioning plate 412 is fixedly connected to the surface of the regulating valve body 1. Through the clamping setting of the positioning groove 411 and the positioning plate 412, the position of the connecting plate 43 is more stable, and the mounting plate 41 is more stably installed, which improves the stability of the filter screen 42.

[0032] Reference Figure 1 and Figure 4 As shown, in this embodiment: the sealing device 5 includes a mounting ring 51, the inner wall of the mounting ring 51 is fixedly connected with a rubber pad 52, the mounting ring 51 is clamped on the arc surface of the regulating valve body 1, and threaded rods 53 are threadedly connected on both sides of the surface of the mounting ring 51. When the filter device 4 is installed on the arc surface of the regulating valve body 1, the mounting ring 51 is installed on the arc surface of the regulating valve body 1, and the rubber pad 52 is contacted and squeezed at the mounting gap of the mounting plate 41, and then the threaded rod 53 is threadedly connected to the mounting ring 51, so that the mounting ring 51 is contracted and squeezed on the surface of the regulating valve body 1 until the rubber pad 52 is stably installed on the surface of the regulating valve body 1. At this time, the filter device 4 can be installed more stably when in use, and it is not easy to produce gaps at the installation position, which is not easy to cause leakage of liquid in the regulating valve body 1, and also ensures the normal use of the filter device 4 and improves its use effect.

[0033] Reference Figure 1 and Figure 4 As shown, in the present embodiment: a fixing ring 54 is threadedly connected on the arc surface of the threaded rod 53, and the fixing ring 54 abuts against one side surface of the mounting ring 51. Through the setting of the fixing ring 54, the threaded rod 53 is more stably mounted on the mounting ring 51, and is not prone to rotation loosening, thereby ensuring the stable installation of the mounting ring 51. Two reinforcement holes 56 are provided on the surface of the mounting ring 51, and reinforcement blocks 55 are respectively clamped on the inner walls of the two reinforcement holes 56. The reinforcement blocks 55 are fixedly connected to the surface of the regulating valve body 1. Through the clamping setting of the reinforcement blocks 55 and the reinforcement holes 56, the position of the mounting ring 51 on the regulating valve body 1 is more stable and accurate, and then it is more stably mounted on the surface of the mounting plate 41, thereby improving the use effect of the sealing device 5.

[0034] Working principle: When the regulating valve body 1 is installed in the liquid circulation pipeline for deployment and use, the filter device 4 is installed in the regulating valve body 1. First, the collection frame 46 is installed on one side of the mounting plate 41 and fixed with screws 48. Then the mounting plate 41 is clamped in the hole groove on the surface of the regulating valve body 1, so that the filter screen 42 is placed inside the regulating valve body 1. At the same time, the connecting plate 43 on the mounting plate 41 will be inserted through the screw 44, and then the nut 45 will be threadedly connected to the screw 44. At this time, when the regulating valve body 1 is regulating the liquid flow, it can better prevent the impurity particles in the liquid from entering the regulating valve body 1 and rubbing against its components, thereby ensuring that the components of the regulating valve body 1 are not easily damaged, extending the service life of the regulating valve body 1, and also improving the use effect and work efficiency of the regulating valve body 1.

[0035] After the filter device 4 is installed on the arc surface of the regulating valve body 1, the mounting ring 51 is installed on the arc surface of the regulating valve body 1, so that the reinforcement hole 56 on the mounting ring 51 is clamped on the reinforcement block 55 of the regulating valve body 1, and the rubber pad 52 is contacted and squeezed at the mounting gap of the mounting plate 41, and then the threaded rod 53 is threadedly connected to the mounting ring 51, so that the mounting ring 51 is contracted and squeezed on the surface of the regulating valve body 1 until the rubber pad 52 is stably installed on the surface of the regulating valve body 1. At this time, the filter device 4 can be installed more stably when in use, and it is not easy to produce gaps at the installation position, which is not easy to cause leakage of the liquid in the regulating valve body 1, and also ensures the normal use of the filter device 4 and improves its use effect.

Claims

1. A straight-through pneumatic diaphragm regulating valve, comprising a regulating valve body (1), characterized in that: The surface of the regulating valve body (1) is fixedly connected to a valve stem (2), the surface of the regulating valve body (1) is fixedly connected to a pneumatic actuator (3), the surface of the regulating valve body (1) is provided with a filter device (4), the filter device (4) comprises a mounting plate (41), a hole groove is penetrated through the circular arc surface of one side of the regulating valve body (1), the mounting plate (41) is clamped on the inner wall of the hole groove on the surface of the regulating valve body (1), a filter screen (42) is fixedly connected to the inner wall of the mounting plate (41), a connecting plate (43) is fixedly connected to the circular arc surface of the mounting plate (41), a screw rod (44) is fixedly connected to the circular arc surface of the regulating valve body (1), the screw rod (44) is inserted through the surface of the connecting plate (43), and a nut (45) is threadedly connected to the circular arc surface of the screw rod (44).

2. The straight-through pneumatic diaphragm regulating valve according to claim 1 is characterized in that: A collecting frame (46) is clamped on the inner wall of one side of the mounting plate (41); the inner wall cross-section of the collecting frame (46) is conical; a fixing block (47) is fixedly connected to the surface of the collecting frame (46); a screw (48) is threadedly connected through the surface of the fixing block (47); and the screw (48) is threadedly connected to the surface of the mounting plate (41).

3. The straight-through pneumatic diaphragm regulating valve according to claim 2 is characterized in that: A mounting groove (49) is provided on one side surface of the fixing block (47), and the inner wall of the mounting groove (49) is clamped with the surface of the screw (48).

4. The straight-through pneumatic diaphragm regulating valve according to claim 1 is characterized in that: An operating block (410) is fixedly connected to the surface of the nut (45), and a plurality of anti-slip protrusions are provided on the surface of the operating block (410).

5. The straight-through pneumatic diaphragm regulating valve according to claim 1 is characterized in that: A positioning groove (411) is provided on one side surface of the connecting plate (43), a positioning plate (412) is clamped on the inner wall of the positioning groove (411), and the positioning plate (412) is fixedly connected to the surface of the regulating valve body (1).

6. The straight-through pneumatic diaphragm regulating valve according to claim 1, characterized in that: A sealing device (5) is provided on the arc surface of the regulating valve body (1), and the sealing device (5) comprises a mounting ring (51), the inner wall of the mounting ring (51) is fixedly connected to a rubber pad (52), the mounting ring (51) is clamped on the arc surface of the regulating valve body (1), and threaded rods (53) are threadedly connected through both sides of the surface of the mounting ring (51).

7. The straight-through pneumatic diaphragm regulating valve according to claim 6, characterized in that: A fixing ring (54) is threadedly connected on the arc surface of the threaded rod (53), and the fixing ring (54) abuts against a side surface of the mounting ring (51).

8. The straight-through pneumatic diaphragm regulating valve according to claim 6, characterized in that: Two reinforcement holes (56) are provided on the surface of the mounting ring (51), and reinforcement blocks (55) are respectively clamped on the inner walls of the two reinforcement holes (56), and the reinforcement blocks (55) are fixedly connected to the surface of the regulating valve body (1).

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