Corrosion-resistant air conditioner check valve

Abstract

The utility model relates to the field of air conditioners, in particular to a corrosion-resistant air conditioner check valve which comprises a check valve body. The flanges are installed on the two sides of the check valve body and used for being connected with the check valve body, one side of each flange is movably connected with a block clamp, and the flanges are in threaded connection with the block clamps. According to the corrosion-resistant air conditioner check valve, due to the arrangement of the check valve body, the butterfly valve, the connecting sleeve, the anti-abrasion layer and the anti-corrosion layer, the situation that the interior of the check valve body is abraded and corroded after being used for a long time is avoided, the service life of the check valve body is greatly prolonged, and the use efficiency of the check valve body is greatly improved; meanwhile, the anti-abrasion layers are arranged outside the butterfly valve and the connecting sleeve, abrasion of the butterfly valve in the opening and closing process is reduced, the situation that the use efficiency is affected and corrosion is caused due to excessive abrasion is avoided, the whole check valve body is made of stainless steel, and the overall anti-corrosion performance is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of air conditioning, in particular to a corrosion-resistant air conditioning check valve. Background Art

[0002] Air conditioning, or air conditioner, refers to equipment that uses artificial means to adjust and control parameters such as temperature, humidity, and flow rate of the ambient air in a building or structure. The installation position of the check valve in the air conditioner is usually between the condenser outlet and the evaporator outlet (indoor unit air inlet) to control the cooling and heating process of the air conditioning system. The check valve is also called a one-way valve or a non-return valve. The one-way valve allows the fluid to only flow along the water inlet, but the outlet medium cannot flow back. It is used in hydraulic systems to prevent oil flow from flowing in the opposite direction, or in pneumatic systems to prevent compressed air from flowing in the opposite direction.

[0003] After searching, the publication number CN204004507U is a utility model of a sealing structure of an air-conditioning check valve, which includes a valve core, a switch, a valve body and a valve seat connected together in a seal, the valve core includes a valve core body and a valve core head, the valve core body is installed in the inner cavity of the valve body, and the valve core head extends out of the mounting hole of the valve body to be placed in the switch, the switch is arranged on the surface of the valve body, and the flange at the bottom of the switch extends into the mounting hole, the switch and the valve core head are connected by screws, the valve core body and the valve core head transition to form an annular boss corresponding to the position of the mounting hole, and a accommodating space for installing a small O-ring is formed between the annular boss and the flange of the switch, and the small O-ring is installed in this accommodating space. After adopting the above technical solution, since the valve core does not need to be provided with an annular groove, an annular boss is used instead, so the processing difficulty of the valve core of the utility model is reduced, the wall thickness of the valve core head can be appropriately reduced, the valve core processing allowance is small, and the material loss is small.

[0004] Existing air-conditioning check valves are easily subject to wear and corrosion after long-term use, which greatly reduces the service life and efficiency of the valve. Although the air-conditioning check valve in the above comparative case has enhanced sealing effect, it also lacks anti-corrosion function. Therefore, after long-term use, the internal part will be corroded and rusted, thus affecting the use effect of the check valve.

[0005] Therefore, it is necessary to invent a corrosion-resistant air conditioning check valve to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a corrosion-resistant air-conditioning check valve. An anti-corrosion layer is arranged inside the check valve body to enhance the overall corrosion resistance of the interior and increase the service life. At the same time, the anti-wear layer arranged outside the butterfly valve and the connecting sleeve reduces the wear of the butterfly valve when opening and closing, avoiding excessive wear that affects the use efficiency and also causes corrosion. The check valve body is also made of stainless steel as a whole, which greatly improves the overall corrosion resistance to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant air-conditioning check valve, comprising a check valve body;

[0008] Flanges are installed on both sides of the check valve body and are used to connect the check valve body. A block clamp is movably connected to one side of the flange. The flange is threadedly connected to the block clamp. A connecting pipe is fixedly installed on one end of the block clamp.

[0009] A butterfly valve is installed inside the check valve body and is used to prevent gas backflow. The inside of the check valve body is movably connected with a movable rod, the outside of the movable rod is fixedly installed with a connecting frame, one side of the connecting frame is fixedly installed with a butterfly valve, a gasket is pasted behind the butterfly valve, one side of the butterfly valve is fixedly installed with a connecting sleeve, the outside of the connecting sleeve is provided with an anti-wear layer, the inside of the check valve body is provided with an anti-corrosion layer, and an upper cover is fixedly installed above the check valve body;

[0010] The buffer mechanism is arranged inside the check valve body and is used for slow closing of the butterfly valve.

[0011] Preferably, a sealing groove is provided on one side surface of the flange, a sealing member is movably connected inside the sealing groove, and a filter screen is provided inside the flange.

[0012] Preferably, the upper and lower surfaces of the inner part of the flange are provided with a slide groove, the interior of the slide groove is movably connected with a slider, and a filter is fixedly installed on one side of the slider.

[0013] Preferably, the buffer mechanism includes a cavity, a telescopic rod, a spring, a buffer block, and a sponge pad. The cavity is opened on one side of the check valve body, the telescopic rod is fixedly installed inside the cavity, the spring is arranged on the outside of the telescopic rod, a buffer block is fixedly installed on one end of the telescopic rod, and a sponge pad is pasted on the outside of the buffer block.

[0014] Preferably, the gasket and the sponge pad are made of polytetrafluoroethylene plates.

[0015] Preferably, the material of the anti-wear layer is stainless steel, and the material of the anti-corrosion layer is epoxy resin.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The check valve body, butterfly valve, connecting sleeve, anti-wear layer and anti-corrosion layer are set to avoid wear and corrosion inside the check valve body during long-term use, which greatly reduces the service life and use efficiency of the check valve body. The anti-corrosion layer is set inside the check valve body to enhance the overall corrosion resistance of the interior and increase the service life. At the same time, the anti-wear layer set outside the butterfly valve and the connecting sleeve reduces the wear of the butterfly valve when opening and closing, avoiding excessive wear that affects the use efficiency and causes corrosion. The check valve body is also made of stainless steel, which greatly improves the overall corrosion resistance;

[0018] 2. Through the setting of the check valve body and the buffer mechanism, the butterfly valve is pushed to flip by the impact force of the gas. When the gas is delivered, the butterfly valve loses the impact force of the gas and flips down. When the butterfly valve flips, it will first contact the buffer block and the sponge pad. The telescopic rod and the spring behind the buffer block play a telescopic buffering role, thereby slowly closing the butterfly valve. At the same time, the gasket set behind the butterfly valve also prevents the gas from pushing the butterfly valve to hit the inner wall of the check valve body and causing wear. This setting prevents the open or closed butterfly valve from hitting the inside of the check valve body and causing wear, thereby increasing the service life of the butterfly valve and the check valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the flange of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the butterfly valve inside the check valve body of the utility model;

[0023] Figure 4 This is a schematic diagram of the butterfly valve structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the check valve body of the utility model;

[0025] Figure 6 For the utility model Figure 3 The enlarged diagram of the structure at point A in the middle.

[0026] Description of reference numerals:

[0027] 1. Check valve body; 2. Flange; 3. Sealing groove; 4. Sealing element; 5. Slide groove; 6. Slider; 7. Filter screen; 8. Block clamp; 9. Connecting pipe; 10. Movable rod; 11. Connecting frame; 12. Butterfly valve; 13. Gasket; 14. Connecting sleeve; 15. Anti-wear layer; 16. Buffer mechanism; 1601. Cavity; 1602. Telescopic rod; 1603. Spring; 1604. Buffer block; 1605. Sponge pad; 17. Anti-corrosion layer; 18. Upper cover. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] The utility model provides Figure 1-6 A corrosion-resistant air-conditioning check valve shown includes a check valve body 1;

[0030] Flange 2 is installed on both sides of the check valve body 1 and is used to connect the check valve body 1. A block clamp 8 is movably connected to one side of the flange 2. The flange 2 is threadedly connected to the block clamp 8. A connecting pipe 9 is fixedly installed at one end of the block clamp 8.

[0031] A butterfly valve 12 is installed inside the check valve body 1 to prevent gas backflow. A movable rod 10 is movably connected inside the check valve body 1. A connecting frame 11 is fixedly installed outside the movable rod 10. A butterfly valve 12 is fixedly installed on one side of the connecting frame 11. A gasket 13 is pasted behind the butterfly valve 12. A connecting sleeve 14 is fixedly installed on one side of the butterfly valve 12. An anti-wear layer 15 is provided on the outside of the connecting sleeve 14. An anti-corrosion layer 17 is provided inside the check valve body 1. An upper cover 18 is fixedly installed above the check valve body 1.

[0032] The buffer mechanism 16 is arranged inside the check valve body 1 and is used for slow closing of the butterfly valve 12. The anti-corrosion layer 17 is arranged inside the check valve body 1 to enhance the overall corrosion resistance of the interior and increase the service life. At the same time, the anti-wear layer 15 arranged outside the butterfly valve 12 and the connecting sleeve 14 reduces the wear of the butterfly valve 12 when opening and closing, avoiding excessive wear that affects the use efficiency and also causes corrosion. The check valve body 1 is also made of stainless steel as a whole, which greatly improves the overall corrosion resistance.

[0033] like Figure 1 and Figure 2 As shown, a sealing groove 3 is provided on one side surface of the flange 2, and a sealing member 4 is movably connected inside the sealing groove 3. A filter screen 7 is provided inside the flange 2. The filter screen 7 can prevent flying insects from entering the check valve body 1, thereby achieving a blocking effect.

[0034] like Figure 1 and Figure 2As shown, the upper and lower surfaces of the inner part of the flange 2 are provided with a slide groove 5, and a slider 6 is movably connected inside the slide groove 5. A filter screen 7 is fixedly installed on one side of the slider 6. The filter screen 7 can be disassembled and replaced in the flange 2 through the slider 6.

[0035] like Figure 1 , Figure 3 and Figure 6 As shown, the buffer mechanism 16 includes a cavity 1601, a telescopic rod 1602, a spring 1603, a buffer block 1604, and a sponge pad 1605. The cavity 1601 is opened on one side of the inside of the check valve body 1, and the telescopic rod 1602 is fixedly installed inside the cavity 1601. The spring 1603 is arranged on the outside of the telescopic rod 1602. A buffer block 1604 is fixedly installed on one end of the telescopic rod 1602. The sponge pad 1605 is pasted on the outside of the buffer block 1604. The telescopic rod 1602 and the spring 1603 behind the buffer block 1604 play a telescopic buffering role, so that the butterfly valve 12 is slowly closed. At the same time, the gasket 13 arranged behind the butterfly valve 12 also prevents the gas from pushing the butterfly valve 12 to hit the inner wall of the check valve body 1 and causing wear. Such a setting prevents the opened or closed butterfly valve 12 from hitting the inside of the check valve body 1 and causing wear, thereby improving the service life of the butterfly valve 12 and the check valve body 1.

[0036] like Figure 3 and Figure 5 As shown, the material of the gasket 13 and the sponge pad 1605 is polytetrafluoroethylene plate, and the gasket 13 and the sponge pad 1605 play a buffering and protective role on the butterfly valve 12 to avoid wear.

[0037] like Figure 4 As shown, the anti-wear layer 15 is made of stainless steel, and the anti-corrosion layer 17 is made of epoxy resin. The anti-wear layer 15 protects the butterfly valve 12 from wear, and the anti-corrosion layer 17 is arranged inside the check valve body 1 to enhance the overall corrosion resistance of the interior and increase the service life.

[0038] The working principle of the utility model is as follows: first, the sealing member 4 is placed in the flanges 2 on both sides of the check valve body 1, and then the sliders 6 on both sides of the filter screen 7 are aligned with the slide grooves 5 in the flange 2 to limit and fix them, and then the flanges 2 on both sides of the check valve body 1 are threadedly connected with the block clamps 8 and the connecting pipe 9. When gas is conveyed, the impact force of the gas pushes the butterfly valve 12 to flip over. When the butterfly valve 12 flips over, the gasket 13 at the rear contacts the inside of the check valve body 1, which plays a certain buffering role and prevents the butterfly valve 12 from being worn. When the gas is conveyed, the butterfly valve 12 loses the impact force of the gas and flips down. When the butterfly valve 12 flips over, it will first contact the buffer block 1604 and The sponge pad 1605 plays a telescopic buffering role through the telescopic rod 1602 and the spring 1603 behind the buffer block 1604, thereby slowly closing the butterfly valve 12. This arrangement prevents the opened or closed butterfly valve 12 from colliding with the inside of the check valve body 1 and causing wear, thereby increasing the service life of the butterfly valve 12 and the check valve body 1. The check valve body 1 is provided with an anti-corrosion layer 17 to enhance the overall corrosion resistance of the interior and avoid internal corrosion of the check valve body 1 due to long-term use. At the same time, the check valve body 1 is also made of stainless steel as a whole, which greatly improves the overall corrosion resistance. In this way, the use process of the corrosion-resistant air-conditioning check valve is completed.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A corrosion-resistant air conditioning check valve, characterized in that: It includes a check valve body (1); Flanges (2) are mounted on both sides of the check valve body (1) and are used to connect the check valve body (1); one side of the flange (2) is movably connected to a block clamp (8); the flange (2) is threadedly connected to the block clamp (8); one end of the block clamp (8) is fixedly mounted with a connecting pipe (9); A butterfly valve (12) is installed inside the check valve body (1) and is used to prevent gas backflow. The check valve body (1) is movably connected to a movable rod (10) inside, and a connecting frame (11) is fixedly installed outside the movable rod (10). A butterfly valve (12) is fixedly installed on one side of the connecting frame (11). A gasket (13) is adhered to the rear of the butterfly valve (12). A connecting sleeve (14) is fixedly installed on one side of the butterfly valve (12). An anti-wear layer (15) is arranged on the outside of the connecting sleeve (14). An anti-corrosion layer (17) is arranged inside the check valve body (1), and an upper cover (18) is fixedly installed above the check valve body (1); A buffer mechanism (16) is arranged inside the check valve body (1) and is used for slowly closing the butterfly valve (12).

2. The corrosion-resistant air conditioning check valve according to claim 1, characterized in that: A sealing groove (3) is provided on one side surface of the flange (2), a sealing member (4) is movably connected inside the sealing groove (3), and a filter screen (7) is provided inside the flange (2).

3. The corrosion-resistant air conditioning check valve according to claim 1, characterized in that: The upper and lower surfaces of the interior of the flange (2) are provided with a slide groove (5), the interior of the slide groove (5) is movably connected with a slider (6), and a filter screen (7) is fixedly installed on one side of the slider (6).

4. The corrosion-resistant air conditioning check valve according to claim 1, characterized in that: The buffer mechanism (16) comprises a cavity (1601), a telescopic rod (1602), a spring (1603), a buffer block (1604), and a sponge pad (1605); the cavity (1601) is opened on one side of the inside of the check valve body (1); the telescopic rod (1602) is fixedly installed inside the cavity (1601); the spring (1603) is arranged outside the telescopic rod (1602); a buffer block (1604) is fixedly installed at one end of the telescopic rod (1602); and the sponge pad (1605) is adhered to the outside of the buffer block (1604).

5. The corrosion-resistant air conditioning check valve according to claim 2, characterized in that: The gasket (13) and the sponge pad (1605) are made of polytetrafluoroethylene plates.

6. The corrosion-resistant air conditioning check valve according to claim 1, characterized in that: The material of the anti-wear layer (15) is stainless steel, and the material of the anti-corrosion layer (17) is epoxy resin.

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