A pneumatic diaphragm regulating valve

Abstract

The utility model relates to the technical field of regulating valves, specifically a pneumatic diaphragm regulating valve, comprising: a valve seat, a valve body, a valve stem, a first end cover, a shock-absorbing and buffering structure, a second end cover, a mounting structure, and a pressure signal port, wherein the valve body is fixedly connected to the top of the valve seat, the valve stem is slidably connected to the top of the valve body, the first end cover is fixedly connected to the top of the valve stem, the shock-absorbing and buffering structure is fixedly connected to the top of the first end cover, the second end cover is fixedly connected to the top of the shock-absorbing and buffering structure, the mounting structure is fixedly connected to the top of the second end cover, the third end cover is plugged into the top of the second end cover, and the pressure signal port is fixedly connected to the top of the third end cover, and the first support rod is installed to drive the first sliding sleeve to slide on the sliding rod, and the second support rod drives the second sliding sleeve to slide on the sliding rod, so as to perform shock-absorbing protection, and can achieve buffering when the diaphragm is impacted to prevent damage caused by excessive impact force.

Description

Technical Field

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

[0002] The pneumatic diaphragm control valve is a control device in the pneumatic unit combination instrument and is one of the important components in the automatic control system of the production process. It receives the output signal of the control instrument to close and open the valve to achieve automatic adjustment of parameters such as pressure, temperature, flow and liquid level. It can be widely used in automatic adjustment and remote control of chemical, petroleum, metallurgy, electric power and light textile industries.

[0003] After searching, the Chinese patent publication number CN214889289U discloses a pneumatic diaphragm regulating valve, including a valve, a filtering structure is provided on the left side of the valve, the filtering structure includes a cross bar, an inclined rod, a filter screen, a first slide bar, a spring, a first round block and a slider, the bottom of the slide bar is fixedly connected to the left side of the top of the valve, the outer wall of the slide bar is slidably connected with the slider, the top of the slider is fixedly connected with the cross bar, and the inner wall of the cross bar is slidably connected with the first round block. The pneumatic diaphragm regulating valve, through the cooperation of the valve, long plate, shell, curved plate, bolts, square box, shell and filtering structure, enables the device to rotate through the spring to drive the inclined rod to move the first round block, and the first round block drives the cross bar to move inward, so that the cross bar is inserted into the groove of the filter screen, thereby filtering the liquid, preventing impurities from passing through the valve, causing the valve to be blocked and affecting normal use.

[0004] The above patent has the following disadvantages: the diaphragm in the pneumatic diaphragm chamber is easily damaged due to the frequent signal pressure, so it needs to be treated with shock absorption to provide shock absorption protection. In view of this, we propose a pneumatic diaphragm regulating valve. Utility Model Content

[0005] The purpose of the utility model is to provide a pneumatic diaphragm regulating valve to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pneumatic diaphragm regulating valve comprises: a valve seat, a valve body, a valve stem, a first end cover, a shock absorbing and buffering structure, a second end cover, a mounting structure, a pressure signal port, and a third end cover, wherein the valve body is fixedly connected to the top of the valve seat, the valve stem is slidably connected to the top of the valve body, the first end cover is fixedly connected to the top of the valve stem, the shock absorbing and buffering structure is fixedly connected to the top of the first end cover, the second end cover is fixedly connected to the top of the shock absorbing and buffering structure, the mounting structure is fixedly connected to the top of the second end cover, the third end cover is plugged into the top of the second end cover, and the pressure signal port is fixedly connected to the top of the third end cover.

[0008] Preferably, the shock-absorbing and buffering structure includes a fixed plate, which is fixedly connected to the top of the first end cover, a sliding rod is fixedly connected to the side of the fixed plate, and a first sliding sleeve is slidably connected to the right side of the sliding rod. The sliding rod is installed to facilitate the sliding of the first sliding sleeve.

[0009] Preferably, a second sliding sleeve is slidably connected to the left side of the sliding rod, a first support rod is hinged on the top of the first sliding sleeve, the other end of the first support rod is fixedly connected to the bottom of the second end cover, and a second support rod is hinged on the top of the second sliding sleeve, and the first support rod and the second support rod are installed for shock-absorbing support.

[0010] Preferably, the other end of the second support rod is hinged at the bottom of the second end cover, the top of the first end cover is fixedly connected to the first telescopic rod, the other end of the first telescopic rod is fixedly connected to the bottom of the second end cover, a first spring is wound around the outside of the first telescopic rod, and the first telescopic rod and the first spring are installed for shock-absorbing support.

[0011] Preferably, the mounting structure includes a slide groove, the slide groove is fixedly connected to the top of the second end cover, a slider is slidably connected to the slide groove, a second telescopic rod is fixedly connected to the side of the slider, the other end of the second telescopic rod is fixedly connected to the inside of the slide groove, and the slider is installed to drive the second telescopic rod to extend and retract.

[0012] Preferably, a second spring is wound around the outside of the second telescopic rod, a connecting plate is fixedly connected to the side of the slider, an insert rod is inserted into the inside of the connecting plate, the insert rod is inserted into the inside of the film, a groove is opened inside the film, and the insert rod is installed to limit the film.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The first support rod is installed to drive the first sliding sleeve to slide on the sliding rod, and the second support rod is installed to drive the second sliding sleeve to slide on the sliding rod, so as to provide shock absorption protection, and buffer the film when it is impacted, to prevent damage caused by excessive impact force.

[0015] (2) By moving the slider, the slider drives the connecting plate to move, and the insertion rod is inserted into the film to fix the film, making it easier to assemble and replace the film, and more convenient to repair and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 It is a side view of the utility model;

[0018] Figure 3 It is a top view of the utility model;

[0019] Figure 4 It is an enlarged view of point A of the utility model;

[0020] Figure 5 It is an enlarged view of point B of the present utility model.

[0021] In the figure: 1. valve seat; 2. valve body; 3. valve stem; 4. first end cover; 5. shock-absorbing and buffering structure; 511. fixing plate; 512. sliding rod; 513. first sliding sleeve; 514. first support rod; 515. second sliding sleeve; 516. second support rod; 517. first telescopic rod; 518. first spring; 6. second end cover; 7. mounting structure; 711. slide groove; 712. slider; 713. second telescopic rod; 714. second spring; 715. connecting plate; 716. plug rod; 8. pressure signal port; 9. third end cover; 10. film. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 , 2As shown in Figure 4, a pneumatic diaphragm regulating valve comprises: a valve seat 1, a valve body 2, a valve stem 3, a first end cover 4, a shock absorbing and buffering structure 5, a second end cover 6, a mounting structure 7, a pressure signal port 8, and a third end cover 9. The valve body 2 is fixedly connected to the top of the valve seat 1, the valve stem 3 is slidably connected to the top of the valve body 2, the first end cover 4 is fixedly connected to the top of the valve stem 3, the shock absorbing and buffering structure 5 is fixedly connected to the top of the first end cover 4, the second end cover 6 is fixedly connected to the top of the shock absorbing and buffering structure 5, the mounting structure 7 is fixedly connected to the top of the second end cover 6, the third end cover 9 is plugged into the top of the second end cover 6, the pressure signal port 8 is fixedly connected to the top of the third end cover 9, and the shock absorbing and buffering structure 5 comprises a fixing plate 511, the fixing plate 511 is fixedly connected to the top of the first end cover 4, the side of the fixing plate 511 is fixedly connected with a sliding rod 512, and the sliding rod 5 A first sliding sleeve 513 is slidably connected to the right side of 12, and the sliding rod 512 is installed to facilitate the sliding of the first sliding sleeve 513. A second sliding sleeve 515 is slidably connected to the left side of the sliding rod 512. A first support rod 514 is hinged at the top of the first sliding sleeve 513, and the other end of the first support rod 514 is fixedly connected to the bottom of the second end cover 6. A second support rod 516 is hinged at the top of the second sliding sleeve 515. The first support rod 514 and the second support rod 516 are installed for shock-absorbing support. The other end of the second support rod 516 is hinged to the bottom of the second end cover 6. A first telescopic rod 517 is fixedly connected to the top of the first end cover 4, and the other end of the first telescopic rod 517 is fixedly connected to the bottom of the second end cover 6. A first spring 518 is wound around the outside of the first telescopic rod 517, and the first telescopic rod 517 and the first spring 518 are installed for shock-absorbing support.

[0024] When the pressure signal port 8 receives pressure, the first sliding sleeve 515 is driven to slide on the sliding rod 512 through the first support rod 516, and the second sliding sleeve 513 is driven to slide on the sliding rod 512 through the second support rod 514, and the first telescopic rod 517 and the first spring 518 are used for shock absorption, so as to play a buffering role when the impact force is too large.

[0025] like Figure 1 , 3 As shown in Figure 5, the mounting structure 7 includes a slide groove 711, which is fixedly connected to the top of the second end cover 6. A slider 712 is slidably connected to the slide groove 711. A second telescopic rod 713 is fixedly connected to the side of the slider 712. The other end of the second telescopic rod 713 is fixedly connected to the inside of the slide groove 711. The slider 712 is installed to drive the second telescopic rod 713 to extend and retract. A second spring 714 is wound around the outside of the second telescopic rod 713. A connecting plate 715 is fixedly connected to the side of the slider 712. A plug rod 716 is inserted into the inside of the connecting plate 715. The plug rod 716 is inserted into the inside of the film 10. A slot is opened inside the film 10. The plug rod 716 is installed to limit the film 10.

[0026] By moving the slider 712, the slider 712 drives the connecting plate 715 to move, and inserts the insertion rod 716 into the film 10, so as to fix the film 10, making it easier to assemble and replace the film 10, and more convenient to repair and replace.

[0027] The working principle of the utility model is as follows:

[0028] When the pressure signal port 8 receives pressure, the first sliding sleeve 515 is driven to slide on the sliding rod 512 through the first support rod 516, and the second sliding sleeve 513 is driven to slide on the sliding rod 512 through the second support rod 514, and the first telescopic rod 517 and the first spring 518 are used for shock absorption, so as to play a buffering role when the impact force is too large, and the slider 712 is moved, the slider 712 drives the connecting plate 715 to move, and the insertion rod 716 is inserted into the interior of the film 10, so as to fix the film 10, so that the film 10 is easy to assemble and replace, and it is more convenient to repair and replace.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pneumatic diaphragm regulating valve, characterized in that: The valve comprises: a valve seat (1), a valve body (2), a valve stem (3), a first end cover (4), a shock absorbing and buffering structure (5), a second end cover (6), a mounting structure (7), a pressure signal port (8), and a third end cover (9); The valve body (2) is fixedly connected to the top of the valve seat (1); The valve stem (3) is slidably connected to the top of the valve body (2); The first end cover (4) is fixedly connected to the top of the valve stem (3); The shock absorbing and buffering structure (5) is fixedly connected to the top of the first end cover (4); The second end cover (6) is fixedly connected to the top of the shock absorbing and buffering structure (5); The mounting structure (7) is fixedly connected to the top of the second end cover (6); The third end cover (9) is plugged into the top of the second end cover (6); The pressure signal port (8) is fixedly connected to the top of the third end cover (9).

2. A pneumatic diaphragm regulating valve according to claim 1, characterized in that: The shock absorbing and buffering structure (5) comprises a fixing plate (511), wherein the fixing plate (511) is fixedly connected to the top of the first end cover (4), a sliding rod (512) is fixedly connected to the side of the fixing plate (511), and a first sliding sleeve (513) is slidably connected to the right side of the sliding rod (512).

3. A pneumatic diaphragm regulating valve according to claim 2, characterized in that: A second sliding sleeve (515) is slidably connected to the left side of the sliding rod (512); a first support rod (514) is hingedly connected to the top of the first sliding sleeve (513); the other end of the first support rod (514) is fixedly connected to the bottom of the second end cover (6); and a second support rod (516) is hingedly connected to the top of the second sliding sleeve (515).

4. A pneumatic diaphragm regulating valve according to claim 3, characterized in that: The other end of the second support rod (516) is hinged to the bottom of the second end cover (6); the top of the first end cover (4) is fixedly connected to a first telescopic rod (517); the other end of the first telescopic rod (517) is fixedly connected to the bottom of the second end cover (6); and a first spring (518) is wound around the outside of the first telescopic rod (517).

5. The pneumatic diaphragm regulating valve according to claim 1, characterized in that: The mounting structure (7) comprises a slide groove (711), wherein the slide groove (711) is fixedly connected to the top of the second end cover (6), a slider (712) is slidably connected to the slide groove (711), a second telescopic rod (713) is fixedly connected to the side of the slider (712), and the other end of the second telescopic rod (713) is fixedly connected to the inside of the slide groove (711).

6. The pneumatic diaphragm regulating valve according to claim 5, characterized in that: A second spring (714) is wound around the outside of the second telescopic rod (713), a connecting plate (715) is fixedly connected to the side of the sliding block (712), an insert rod (716) is inserted into the inside of the connecting plate (715), and the insert rod (716) is inserted into the inside of the film (10), and a groove is opened inside the film (10).

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