Anti-blocking diaphragm valve for high-purity special gas

Abstract

The utility model relates to the technical field of diaphragm valves, and discloses a high-purity special gas anti-blocking diaphragm valve which comprises a base, the top end of a valve body is fixedly connected with a main shell, the two sides of the valve body are fixedly connected with filter boxes, the filter boxes and the valve body are mutually communicated, the interiors of the filter boxes are movably connected with fixing frames, and the fixing frames are fixedly connected with the base. A filter screen for filtering high-purity special gas is movably connected to the interior of the fixing frame, a fixing mechanism is movably connected to the interior of the top end of the fixing frame, a limiting mechanism is fixedly connected to the bottom end of the fixing frame, a pull rod is fixedly connected to the outer wall of the fixing frame, and a gas inlet pipe and a gas outlet pipe are arranged on the outer wall of the filter box. The filter screen can be fixed and limited through the fixing mechanism, so that personnel can replace or clean the filter screen more conveniently, and meanwhile, the situation that impurities and dust in high-purity special gas are conveyed into the valve body, and consequently the interior of the valve body is blocked can be prevented through the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm valves, in particular to a high-purity special gas anti-clogging diaphragm valve. Background Art

[0002] Modern engine structures are becoming more and more compact. In order to improve the power and economy of gasoline engines, many devices are added to the cylinder head. Diaphragm valve structure cylinder head cover is increasingly being adopted by engine manufacturers due to its small space requirement. However, if it is directly used without control, it will lead to the problem of high engine oil consumption.

[0003] In the prior art, for example, the diaphragm valve disclosed in the publication number CN105179736A has at least one valve body, the valve body has at least one inlet, at least one outlet, at least one flow channel and at least one baffle plate, the baffle plate divides the flow channel into channel sections. In addition, the diaphragm valve has a diaphragm, the diaphragm is in contact with a surrounding sealing seat of the valve body, and a driver, the driver has a driver housing, wherein the driver is coupled to the diaphragm so as to press the diaphragm onto the baffle plate in order to close the valve.

[0004] However, the high-purity special gas in the above patent may contain dust or impurities during use. After the equipment has been used for too long, it may cause accumulation inside the equipment, resulting in internal blockage. At this time, it is difficult for personnel to clean it, and it affects the service life of the equipment. Utility Model Content

[0005] The utility model aims to provide a high-purity special gas anti-clogging diaphragm valve to solve the problems in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A high-purity special gas anti-clogging diaphragm valve comprises a base, the top end of the valve body is fixedly connected to a main shell, both sides of the valve body are fixedly connected to filter boxes, and the filter boxes and the valve body penetrate each other, the filter box is movably connected to a fixed frame inside, and the fixed frame is movably connected to a filter screen for filtering high-purity special gas inside, the top end of the fixed frame is internally movably connected to a fixing mechanism, and the bottom end of the fixed frame is fixedly connected to a limiting mechanism, the outer wall of the fixed frame is fixedly connected to a pull rod, and the outer walls of the filter box are respectively provided with an air inlet pipe and an air outlet pipe.

[0008] Preferably, the fixing mechanism includes a rotating rod, bevel gear one, bevel gear two, a screw and a splint, the bottom end of the rotating rod is fixedly connected to the axis of bevel gear one, bevel gear two is provided with two symmetrical bevel gears, and bevel gear two is fixedly connected to one end of the screw, and the splint is movably connected to the other end of the screw.

[0009] Preferably, the bevel gear 1 is meshed with the bevel gear 2, the bevel gear 1 is located above the bevel gear 2, and a mounting groove is provided at the top of the fixing frame.

[0010] Preferably, the screw rod is rotatably connected to the inside of the mounting groove, and the bottom end of the clamping plate is movably connected to the outside of the top end of the filter screen.

[0011] Preferably, the limiting mechanism includes a handle, a bidirectional screw, a slider, a connecting rod and a limiting block, one side of the handle is fixedly connected to one end of the bidirectional screw, two sliders are provided that are symmetrical on the left and right, and the sliders are threadedly connected to the outer wall of the bidirectional screw, one end of the connecting rod is hinged to the outer wall of the slider, and the other end of the connecting rod is hinged to the inner wall of the limiting block.

[0012] Preferably, a limiting groove is provided at the inner bottom end of the filter box, and the limiting block is matched with the limiting groove, the bidirectional screw is rotatably connected to the inner bottom end of the fixed frame, and the limiting block extends to the outside of the fixed frame.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model can fix and limit the filter screen through the fixing mechanism, so that it is more convenient for personnel to replace or clean the filter screen. At the same time, the filter screen can prevent impurities and dust in the high-purity special gas from being transmitted to the inside of the valve body, thereby causing blockage inside the valve body;

[0015] 2. The utility model can facilitate personnel to pull out the filter from the inside of the filter box through the limiting mechanism, thereby making it more convenient for personnel to operate and improving their work efficiency, while also improving the stability of the filter frame inside the filter box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the partial explosion structure of the utility model;

[0020] Figure 4 This utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle. DETAILED DESCRIPTION

[0021] 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 of 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.

[0022] A high-purity special gas anti-clogging diaphragm valve, such as Figure 1 As shown, it includes a base, the top of the valve body 1 is fixedly connected to the main shell 2, both sides of the valve body 1 are fixedly connected to filter boxes 3, and the filter boxes 3 and the valve body 1 penetrate each other, the inside of the filter box 3 is movably connected to the fixed frame 4, and the inside of the fixed frame 4 is movably connected to the filter screen 5 for filtering high-purity special gas, the top of the fixed frame 4 is internally movably connected to the fixing mechanism 6, and the bottom end of the fixed frame 4 is fixedly connected to the limiting mechanism 7, the outer wall of the fixed frame 4 is fixedly connected to the pull rod 8, and the outer wall of the filter box 3 is respectively provided with an air inlet pipe 9 and an air outlet pipe 10.

[0023] When in use, after the equipment is connected to the external pipeline, the filter screen 5 can be placed on the opposite side of the fixed frame 4, and the rotating rod 601 can be rotated at this time. At this time, the rotating rod 601 will drive the bevel gear 2 603 to rotate through the bevel gear 1 602, thereby driving the screws 604 on both sides to rotate. At this time, the clamping plates 605 will approach each other under the action of the threads. At this time, the clamping plates 605 will clamp and fix the top of the filter screen 5. Otherwise, the filter screen 5 can be removed, so that it is more convenient for personnel to replace or clean the filter screen 5. At the same time, the filter screen 5 can prevent impurities and dust in the high-purity special gas from being transmitted to the inside of the valve body 1, thereby causing the valve body 1 to In the event of internal blockage, when the filter screen 5 is installed, the fixed frame 4 can be inserted into the interior of the filter box 3, and the handle 701 can be turned at this time. The handle 701 will drive the bidirectional screw 702 to rotate, and the sliders 703 will approach each other under the action of the thread, so that the connecting rod 704 will push the limit block 705 out of the fixed frame 4, so that it will be stuck in the interior of the limit groove. At this time, the connection between the fixed frame 4 and the filter box 3 is completed, and the limit mechanism 7 can be used to facilitate personnel to pull out or insert the filter screen 5 from the inside of the filter box 3, so as to make it more convenient for personnel to operate and improve their work efficiency. At the same time, the stability of the filter frame inside the filter box 3 can be improved.

[0024] like Figure 3As shown, the fixing mechanism 6 includes a rotating rod 601, a bevel gear 1 602, a bevel gear 2 603, a screw 604 and a clamping plate 605. The bottom end of the rotating rod 601 is fixedly connected to the axis of the bevel gear 1 602. The bevel gear 2 603 is provided with two symmetrical bevel gears, and the bevel gear 2 603 is fixedly connected to one end of the screw 604. The clamping plate 605 is movably connected to the other end of the screw 604. The bevel gear 1 602 is meshed with the bevel gear 2 603. The bevel gear 1 602 is located above the bevel gear 2 603. A mounting groove is provided at the top of the fixing frame 4. The screw 604 is rotatably connected to the inside of the mounting groove. The bottom end of the clamping plate 605 is movably connected to the top outside of the filter screen 5.

[0025] After the equipment is connected to the external pipeline, the filter screen 5 can be placed on the opposite side of the fixed frame 4. At this time, the rotating rod 601 can be rotated. At this time, the rotating rod 601 will drive the bevel gear 2 603 to rotate through the bevel gear 1 602, thereby driving the screws 604 on both sides to rotate. At this time, the clamping plates 605 will approach each other under the action of the thread. At this time, the clamping plates 605 will clamp and fix the top of the filter screen 5. Otherwise, the filter screen 5 can be removed, which makes it more convenient for personnel to replace or clean the filter screen 5. At the same time, the filter screen 5 can prevent impurities and dust in the high-purity special gas from being transmitted to the inside of the valve body 1, thereby causing blockage inside the valve body 1.

[0026] like Figure 3-4 As shown, the limiting mechanism 7 includes a handle 701, a bidirectional screw 702, a slider 703, a connecting rod 704 and a limiting block 705. One side of the handle 701 is fixedly connected to one end of the bidirectional screw 702. The slider 703 is provided with two symmetrical sliders, and the sliders 703 are threadedly connected to the outer wall of the bidirectional screw 702. One end of the connecting rod 704 is hinged to the outer wall of the slider 703, and the other end of the connecting rod 704 is hinged to the inner wall of the limiting block 705. A limiting groove is provided at the inner bottom end of the filter box 3, and the limiting block 705 is adapted to the limiting groove. The bidirectional screw 702 is rotatably connected to the bottom end of the fixed frame 4, and the limiting block 705 extends to the outside of the fixed frame 4.

[0027] When the filter screen 5 is installed, the fixing frame 4 can be inserted into the interior of the filter box 3. At this time, the handle 701 can be rotated, and the handle 701 will drive the bidirectional screw 702 to rotate. At this time, the sliders 703 will approach each other under the action of the thread, so that the connecting rod 704 pushes the limit block 705 out of the fixing frame 4, thereby snapping into the interior of the limit groove. At this time, the connection between the fixing frame 4 and the filter box 3 is completed. The limiting mechanism 7 can facilitate personnel to pull out or insert the filter screen 5 from the inside of the filter box 3, which is more convenient for personnel to operate and improves personnel work efficiency. At the same time, it can improve the stability of the filter frame inside the filter box 3.

[0028] Here’s how it works:

[0029] After the equipment is connected to the external pipeline, the filter screen 5 can be placed on the opposite side of the fixed frame 4, and the rotating rod 601 can be rotated at this time. At this time, the rotating rod 601 will drive the bevel gear 2 603 to rotate through the bevel gear 1 602, thereby driving the screw rods 604 on both sides to rotate. At this time, the clamping plates 605 will approach each other under the action of the threads. At this time, the clamping plates 605 will clamp and fix the top of the filter screen 5, otherwise the filter screen 5 can be removed. When the filter screen 5 is installed, the fixed frame 4 can be inserted into the interior of the filter box 3. At this time, the handle 701 can be rotated, and the handle 701 will drive the bidirectional screw rod 702 to rotate. At this time, the sliders 703 will approach each other under the action of the threads, so that the connecting rod 704 will push the limit block 705 out of the fixed frame 4, thereby snapping into the interior of the limit groove. At this time, the connection between the fixed frame 4 and the filter box 3 is completed, and the limiting mechanism 7 can be used to facilitate personnel to extract or insert the filter screen 5 from the inside of the filter box 3.

[0030] 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, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A high-purity special gas anti-clogging diaphragm valve, comprising a valve body (1), characterized in that: The top of the valve body (1) is fixedly connected to the main shell (2), and both sides of the valve body (1) are fixedly connected to filter boxes (3), and the filter boxes (3) and the valve body (1) penetrate each other. The filter box (3) is movably connected to a fixed frame (4) inside, and the fixed frame (4) is movably connected to a filter screen (5) for filtering high-purity special gases inside. The top of the fixed frame (4) is movably connected to a fixing mechanism (6), and the bottom of the fixed frame (4) is fixedly connected to a limiting mechanism (7). The outer wall of the fixed frame (4) is fixedly connected to a pull rod (8), and the outer wall of the filter box (3) is respectively provided with an air inlet pipe (9) and an air outlet pipe (10).

2. The high-purity special gas anti-clogging diaphragm valve according to claim 1 is characterized in that: The fixing mechanism (6) comprises a rotating rod (601), a bevel gear 1 (602), a bevel gear 2 (603), a screw rod (604) and a clamping plate (605). The bottom end of the rotating rod (601) is fixedly connected to the axis of the bevel gear 1 (602). The bevel gear 2 (603) is provided with two left-right symmetrical bevel gears, and the bevel gear 2 (603) is fixedly connected to one end of the screw rod (604). The clamping plate (605) is movably connected to the other end of the screw rod (604).

3. The high-purity special gas anti-clogging diaphragm valve according to claim 2 is characterized in that: The bevel gear one (602) is meshed with the bevel gear two (603), the bevel gear one (602) is located above the bevel gear two (603), and a mounting groove is provided at the top of the fixing frame (4).

4. The high-purity special gas anti-clogging diaphragm valve according to claim 2 is characterized in that: The screw rod (604) is rotatably connected to the inside of the installation groove, and the bottom end of the clamping plate (605) is movably connected to the outside of the top end of the filter screen (5).

5. The high-purity special gas anti-clogging diaphragm valve according to claim 1 is characterized in that: The limiting mechanism (7) comprises a handle (701), a bidirectional screw (702), a slider (703), a connecting rod (704) and a limiting block (705); one side of the handle (701) is fixedly connected to one end of the bidirectional screw (702); two sliders (703) are provided which are symmetrical on the left and right, and the sliders (703) are threadedly connected to the outer wall of the bidirectional screw (702); one end of the connecting rod (704) is hinged to the outer wall of the slider (703), and the other end of the connecting rod (704) is hinged to the inner wall of the limiting block (705).

6. The high-purity special gas anti-clogging diaphragm valve according to claim 5, characterized in that: The inner bottom end of the filter box (3) is provided with a limiting groove, and the limiting block (705) is matched with the limiting groove. The bidirectional screw (702) is rotatably connected to the inner bottom end of the fixed frame (4), and the limiting block (705) extends to the outside of the fixed frame (4).

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