Check valve with drip-proof structure

Abstract

The invention discloses a check valve with a drip-proof structure, and belongs to the technical field of check valves. A check valve with a drip-proof structure comprises a check valve shell, a mounting frame is mounted at the upper end of the check valve shell, a valve clack is arranged below the mounting frame, a drip-proof ring is arranged on one side of the check valve shell, a telescopic sealing ring is arranged in the drip-proof ring, and the valve clack is embedded outside the telescopic sealing ring and connected with the telescopic sealing ring in a sealed mode. And the other side of the anti-leakage ring is provided with an anti-leakage arc-shaped baffle plate. The problem that in the actual using process of an existing check valve, a filter screen structure cannot prevent leakage, and consequently the using effect of the check valve is poor is solved, the leakage-proof arc-shaped baffle slides and rises, the bottommost position of the leakage-proof ring is blocked, residual materials remaining at the bottom of the feeding pipe are blocked, and the leakage-proof effect of the check valve is improved. And therefore, blocking is assisted, the sealing effect is improved, and the using effect of the check valve is better.

Description

Technical Field

[0001] The present invention relates to the technical field of check valves, in particular to a check valve with an anti-drip structure. Background Art

[0002] A check valve is an automatic valve used to prevent reverse flow of fluid in a pipeline. It opens and closes automatically based on the fluid flow, typically allowing flow in only one direction. Its design must ensure low resistance under positive pressure and a tight seal under negative pressure.

[0003] Chinese patent publication number CN222502807U discloses a drip-proof check valve, including a valve body, a valve cover, and bolts. The drip-proof check valve adopts a lifting check valve. The valve body uses a spherical valve disc and a valve seat to form a sealing surface, thereby reducing water flow impact, improving sealing performance, and reducing vibration and noise generated during opening and closing. Two layers of filter screens are provided on the pipes on both sides of the valve body. The filter screens have different filter meshes, which can effectively filter impurities in the water, prevent impurities from damaging the parts in the valve body, and extend the service life.

[0004] During actual use, the check valve of the above patent adopts a filter structure that cannot prevent dripping, resulting in poor performance of the check valve. Summary of the Invention

[0005] The purpose of the present invention is to provide a check valve with an anti-drip structure, which solves the problem that the check valve proposed in the above background technology cannot prevent dripping during actual use due to the filter structure, resulting in poor performance of the check valve.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a check valve with an anti-drip structure, comprising a check valve housing, a mounting bracket installed on the upper end of the check valve housing, a valve disc provided below the mounting bracket, an anti-drip ring provided on one side of the check valve housing, a telescopic sealing ring provided inside the anti-drip ring, the valve disc embedded in the outside of the telescopic sealing ring and sealed with the telescopic sealing ring, an anti-drip arc baffle provided on the other side of the anti-drip ring, the anti-drip arc baffle slides and rises, thereby blocking the bottommost position of the anti-drip ring, so that the residual material remaining at the bottom of the feed pipe is blocked to avoid dripping, thereby assisting in sealing, improving the sealing effect, and making the use of the check valve better.

[0007] Preferably, a feed pipe is welded to one side of the check valve housing, the anti-drip ring is obliquely embedded in the interior of the feed pipe and is sealed with the feed pipe, and a valve cover is installed at the upper end of the check valve housing, and the valve cover is disassembled to perform maintenance and repair work on the interior of the check valve housing.

[0008] Preferably, a discharge pipe is welded to the other side of the check valve housing, and the discharge pipe is connected to the feed pipe. An integrally formed material guide port is provided at the inner center of the anti-drip ring, and the material guide port is respectively connected to the feed pipe and the discharge pipe.

[0009] Preferably, the mounting bracket is embedded in the upper part of the interior of the check valve housing and is fixedly connected to the check valve housing. A spring shaft is installed in the middle of the mounting bracket, and the spring shaft is rotatably connected to the mounting bracket through a shaft sleeve. The valve disc is limited by its own weight and the spring shaft and returns to the surface of the anti-drip ring for pressing, thereby blocking reverse flow. The return effect can also be improved by the spring shaft.

[0010] Preferably, a connecting arm is provided between the spring shaft and the valve disc, and the two ends of the connecting arm are fixedly connected to the spring shaft and the valve disc respectively. A sealing gasket is provided on the outside of the valve disc, and the sealing gasket is in contact with the telescopic sealing ring. The spring shaft can also improve the return effect, and cooperate with the telescopic sealing ring to buffer the rebound force, close quickly with small impact, reduce leakage caused by the rebound of the valve disc, and further improve the anti-drip effect.

[0011] Preferably, the inner ring of the anti-drip ring is provided with an integrally formed sliding groove, the telescopic sealing ring extends to the inside of the sliding groove and is slidingly connected to the anti-drip ring, the inner wall of the anti-drip ring is installed with an inspection plate, the inspection plate is sealingly connected to the sliding groove, and the telescopic sealing ring is sealingly connected to the anti-drip ring.

[0012] Preferably, a guide arc plate is installed at the front end of the anti-drip ring, and the guide arc plate and the anti-drip ring are arranged as an integrally formed structure. The anti-drip arc baffle passes through the guide arc plate and is slidably connected to the guide arc plate through balls. The anti-drip arc baffle extends into the inner bottom of the guide arc plate due to its own weight, and the pushing block pushes the bottom end of the anti-drip arc baffle. The anti-drip arc baffle is limited by the guide arc plate and slides up, thereby blocking the bottom position of the anti-drip ring.

[0013] Preferably, a pushing block is installed at the rear end of the telescopic sealing ring, and the pushing block is connected to the telescopic sealing ring by a fixing screw. The pushing block fits with the bottom end of the anti-drip arc baffle, and a pressure spring is installed inside the sliding groove. The two ends of the pressure spring are fixedly connected to the pushing block and the telescopic sealing ring respectively. The pressure spring gives the telescopic sealing ring a certain supporting force, so that after the valve disc is opened, the telescopic sealing ring rebounds, and the anti-drip arc baffle is affected by its own gravity and drops to the bottom of the guide arc plate to avoid blocking the flow of materials.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The check valve structure of the present invention adopts the structure of an anti-drip ring to perform auxiliary sealing and anti-drip work, and is limited by the telescopic sealing ring inside the anti-drip ring. The valve disc is pressed down on the surface of the anti-drip ring by its own weight, and the sealing gasket on the surface of the valve disc fits with the telescopic sealing ring. The telescopic sealing ring is subjected to the pressure of the valve disc and extends into the interior of the anti-drip ring through the sliding groove, driving the pushing block to push the bottom end of the anti-drip arc baffle. The anti-drip arc baffle is limited by the guide arc plate and slides and rises, thereby blocking the bottom position of the anti-drip ring, so that the residual material remaining at the bottom of the feed pipe is blocked to avoid dripping, thereby assisting in blocking, improving the sealing effect, and making the use effect of the check valve better.

[0016] 2. When the check valve of the present invention is in use, material is fed through the feed pipe. During the feeding process, the material passes through the guide port and impacts the valve disc. The valve disc is bounced open by the impact, and the material passes through the check valve housing and enters the discharge pipe for guiding. When the feeding is stopped, the valve disc is limited by its own weight and the spring shaft, and returns to the surface of the anti-drip ring for pressing, thereby blocking the reverse flow. The spring shaft can also improve the return effect, and cooperates with the telescopic sealing ring to buffer the rebound force, so that the valve disc closes quickly with small impact, reduces leakage caused by the rebound of the valve disc, and further improves the anti-drip effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an axonometric view of the present invention from the front;

[0018] Figure 2 This is a front-view cutaway view of the valve disc of the present invention after opening;

[0019] Figure 3 This is a sectional view of the valve disc of the present invention when it is opened from the side;

[0020] Figure 4 This is a front-view cutaway view of the valve disc of the present invention after closing;

[0021] Figure 5 For the present invention Figure 4 A partial enlarged view of area A in the middle;

[0022] Figure 6 This is an axonometric view of the side view of the anti-drip ring after the access panel of the present invention is disassembled;

[0023] Figure 7 This is a diagram of the internal structure of the anti-drip ring of the present invention.

[0024] In the figure: 1. Check valve housing; 101. Feed pipe; 102. Discharge pipe; 103. Valve cover; 2. Mounting frame; 201. Connecting arm; 202. Spring shaft; 203. Valve disc; 204. Sealing gasket; 3. Anti-drip ring; 301. Telescopic sealing ring; 302. Feeding port; 303. Guide arc plate; 304. Anti-drip arc baffle; 305. Inspection plate; 306. Sliding groove; 307. Push block; 308. Pressure spring. DETAILED DESCRIPTION

[0025] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] Example 1:

[0027] In order to solve the problem that the existing check valve cannot prevent dripping during actual use, which leads to poor performance of the check valve, please refer to Figure 1 、 Figure 4-Figure 7 , this embodiment provides the following technical solutions:

[0028] A check valve with an anti-drip structure in this embodiment includes a check valve housing 1, a mounting frame 2 is installed on the upper end of the check valve housing 1, a valve flap 203 is provided below the mounting frame 2, an anti-drip ring 3 is provided on one side of the check valve housing 1, a telescopic sealing ring 301 is provided inside the anti-drip ring 3, the valve flap 203 is embedded in the outside of the telescopic sealing ring 301 and is sealed with the telescopic sealing ring 301, an anti-drip arc baffle 304 is installed on the other side of the anti-drip ring 3, the anti-drip arc baffle 304 slides and rises, thereby blocking the bottom position of the anti-drip ring 3, so that the residual material remaining at the bottom of the feed pipe 101 is blocked to avoid dripping, thereby assisting in blocking, improving the sealing effect, and making the use effect of the check valve better.

[0029] Among them, specifically Figure 5 As shown, the inner ring of the anti-drip ring 3 is provided with an integrally formed sliding groove 306, the telescopic sealing ring 301 extends to the inside of the sliding groove 306 and is slidingly connected to the anti-drip ring 3, and an inspection plate 305 is installed on the inner wall of the anti-drip ring 3, the inspection plate 305 is sealedly connected to the sliding groove 306, the telescopic sealing ring 301 is sealedly connected to the anti-drip ring 3, and the telescopic sealing ring 301 is subjected to the pressure of the valve disc 203 and extends into the interior of the anti-drip ring 3 through the sliding groove 306.

[0030] It should be noted that a guide arc plate 303 is installed at the front end of the anti-drip ring 3. The guide arc plate 303 and the anti-drip ring 3 are set to an integrally formed structure. The anti-drip arc baffle 304 passes through the guide arc plate 303 and is slidably connected to the guide arc plate 303 through balls. The anti-drip arc baffle 304 extends into the inner bottom of the guide arc plate 303 due to its own weight. The pushing block 307 pushes the bottom end of the anti-drip arc baffle 304. The anti-drip arc baffle 304 is limited by the guide arc plate 303 and slides up, thereby blocking the bottom position of the anti-drip ring 3.

[0031] In addition, a pushing block 307 is installed at the rear end of the telescopic sealing ring 301, and the pushing block 307 is connected to the telescopic sealing ring 301 by a fixing screw. The pushing block 307 fits with the bottom end of the anti-drip arc baffle 304, and a pressure spring 308 is installed inside the sliding groove 306. The two ends of the pressure spring 308 are fixedly connected to the pushing block 307 and the telescopic sealing ring 301 respectively. The pressure spring 308 gives the telescopic sealing ring 301 a certain supporting force, so that after the valve disc 203 is opened, the telescopic sealing ring 301 rebounds, and the anti-drip arc baffle 304 is affected by its own gravity and drops to the bottom of the guide arc plate 303 to avoid blocking the flow of materials.

[0032] The sealing gasket 204 on the surface of the valve disc 203 fits with the telescopic sealing ring 301. The telescopic sealing ring 301 is pressed down by the valve disc 203 and extends into the interior of the anti-drip ring 3 through the sliding groove 306, driving the pushing block 307 to push the bottom end of the anti-drip arc baffle 304. The anti-drip arc baffle 304 is limited by the guide arc plate 303 and slides up, thereby blocking the bottom position of the anti-drip ring 3, so that the residual material remaining at the bottom of the feed pipe 101 is blocked to avoid dripping, thereby assisting in blocking and improving the sealing effect, making the use of the check valve more effective.

[0033] Example 2:

[0034] In order to solve the problem that the existing check valve has poor return effect during actual use, which affects long-term work, please refer to Figure 1-Figure 5 , this embodiment provides the following technical solutions:

[0035] A check valve with an anti-drip structure in this embodiment includes a check valve housing 1, a mounting frame 2 is installed on the upper end of the check valve housing 1, a valve flap 203 is provided below the mounting frame 2, an anti-drip ring 3 is provided on one side of the check valve housing 1, a telescopic sealing ring 301 is provided inside the anti-drip ring 3, the valve flap 203 is embedded in the outside of the telescopic sealing ring 301 and is sealed with the telescopic sealing ring 301, an anti-drip arc baffle 304 is installed on the other side of the anti-drip ring 3, the anti-drip arc baffle 304 slides and rises, thereby blocking the bottom position of the anti-drip ring 3, so that the residual material remaining at the bottom of the feed pipe 101 is blocked to avoid dripping, thereby assisting in blocking, improving the sealing effect, and making the use effect of the check valve better.

[0036] Among them, a feed pipe 101 is welded to one side of the check valve housing 1. When the check valve is in use, the feed is fed through the feed pipe 101. The anti-drip ring 3 is obliquely embedded in the inside of the feed pipe 101 and is sealed with the feed pipe 101. A valve cover 103 is installed at the upper end of the check valve housing 1. The valve cover 103 is disassembled to perform maintenance and repair work on the inside of the check valve housing 1.

[0037] In addition, a discharge pipe 102 is welded to the other side of the check valve housing 1, and the discharge pipe 102 is connected to the feed pipe 101. An integrally formed material guide port 302 is provided at the inner center of the anti-drip ring 3, and the material guide port 302 is respectively connected to the feed pipe 101 and the discharge pipe 102. During the feeding process, the material passes through the material guide port 302 and impacts the valve flap 203. The valve flap 203 is bounced open by the impact force, and the material passes through the check valve housing 1 into the discharge pipe 102 for material guidance.

[0038] It should be noted that the mounting bracket 2 is embedded in the upper part of the interior of the check valve housing 1 and is fixedly connected to the check valve housing 1. A spring shaft 202 is installed in the middle of the mounting bracket 2. The spring shaft 202 is rotatably connected to the mounting bracket 2 through a shaft sleeve. The valve disc 203 is limited by its own weight and the spring shaft 202 and returns to the surface of the anti-drip ring 3 for pressing, thereby blocking reverse flow. The return effect can also be improved by the spring shaft 202.

[0039] Furthermore, a connecting arm 201 is provided between the spring shaft 202 and the valve disc 203, and the two ends of the connecting arm 201 are fixedly connected to the spring shaft 202 and the valve disc 203 respectively. A sealing gasket 204 is provided on the outside of the valve disc 203, and the sealing gasket 204 is in contact with the telescopic sealing ring 301. The spring shaft 202 can also improve the return effect, and cooperate with the telescopic sealing ring 301 to buffer the rebound force, close quickly with small impact, reduce leakage caused by the rebound of the valve disc 203, and further improve the anti-drip effect.

[0040] Specifically, when the check valve is in use, material is fed through the feed pipe 101. During the feeding process, the material passes through the guide port 302 and impacts the valve disc 203. The valve disc 203 is bounced open by the impact, and the material passes through the check valve housing 1 into the discharge pipe 102 for guiding. When the feeding is stopped, the valve disc 203 is limited by its own weight and the spring shaft 202, and returns to the surface of the anti-drip ring 3 for pressing, thereby blocking the reverse flow. The spring shaft 202 can also improve the return effect, and cooperates with the telescopic sealing ring 301 to buffer the rebound force, so that it closes quickly with small impact, reduces leakage caused by the rebound of the valve disc 203, and further improves the anti-drip effect.

[0041] Working principle: When in use, feed the material through the feed pipe 101 to introduce the medium. During the feeding process, the material passes through the guide port 302 and impacts the valve disc 203. The valve disc 203 is bounced open by the impact, and the material passes through the check valve housing 1 and enters the discharge pipe 102 for guiding. The pressure spring 308 gives the telescopic sealing ring 301 a certain supporting force, so that after the valve disc 203 is opened, the telescopic sealing ring 301 rebounds, and the anti-drip arc baffle 304 is affected by its own gravity and drops to the bottom of the guide arc plate 303 to avoid blocking the flow of material. When the feeding stops, the valve disc 203 is limited by its own weight and the spring shaft 202, and returns to the surface of the anti-drip ring 3 for pressing, blocking the reverse flow. The structure of the anti-drip ring 3 is used to perform auxiliary sealing and anti-drip work. The telescopic sealing ring 301 inside the anti-drip ring 3 is used for limitation, and the valve disc 203 is affected by its own weight After the bottle 3 is in the airtight position, the bottle 3 is in the airtight position, and the bottle 3 is in the airtight position, so that the bottle 3 is in the airtight position, and the bottle 3 is in the airtight position.

[0042] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0043] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A check valve with an anti-drip structure, comprising a check valve housing (1), characterized in that: A mounting frame (2) is mounted on the upper end of the check valve housing (1), a valve flap (203) is arranged below the mounting frame (2), an anti-drip ring (3) is arranged on one side of the check valve housing (1), a telescopic sealing ring (301) is arranged inside the anti-drip ring (3), the valve flap (203) is embedded in the outside of the telescopic sealing ring (301) and is sealed with the telescopic sealing ring (301), and an anti-drip arc baffle (304) is mounted on the other side of the anti-drip ring (3).

2. A check valve with an anti-drip structure according to claim 1, characterized in that: A feed pipe (101) is welded to one side of the check valve housing (1), the anti-drip ring (3) is obliquely embedded in the feed pipe (101) and sealed to the feed pipe (101), and a valve cover (103) is installed at the upper end of the check valve housing (1).

3. A check valve with an anti-drip structure according to claim 2, characterized in that: A discharge pipe (102) is welded to the other side of the check valve housing (1), and the discharge pipe (102) is communicated with the feed pipe (101). An integrally formed guide port (302) is provided at the inner center of the anti-drip ring (3), and the guide port (302) is communicated with the feed pipe (101) and the discharge pipe (102) respectively.

4. The check valve with an anti-drip structure according to claim 1, characterized in that: The mounting frame (2) is embedded in the upper part of the check valve housing (1) and is fixedly connected to the check valve housing (1). A spring shaft (202) is installed in the middle of the mounting frame (2), and the spring shaft (202) is rotatably connected to the mounting frame (2) via a shaft sleeve.

5. The check valve with an anti-drip structure according to claim 4, characterized in that: A connecting arm (201) is provided between the spring shaft (202) and the valve disc (203), and the two ends of the connecting arm (201) are fixedly connected to the spring shaft (202) and the valve disc (203) respectively. A sealing gasket (204) is provided on the outside of the valve disc (203), and the sealing gasket (204) is in contact with the telescopic sealing ring (301).

6. The check valve with an anti-drip structure according to claim 1, characterized in that: The inner ring of the anti-drip ring (3) is provided with an integrally formed sliding groove (306), the telescopic sealing ring (301) extends to the interior of the sliding groove (306) and is slidably connected to the anti-drip ring (3), an inspection plate (305) is installed on the inner wall of the anti-drip ring (3), the inspection plate (305) is sealedly connected to the sliding groove (306), and the telescopic sealing ring (301) is sealedly connected to the anti-drip ring (3).

7. The check valve with an anti-drip structure according to claim 1, characterized in that: A guide arc plate (303) is installed at the front end of the anti-drip ring (3); the guide arc plate (303) and the anti-drip ring (3) are arranged as an integrally formed structure; the anti-drip arc baffle (304) penetrates the guide arc plate (303) and is slidably connected to the guide arc plate (303) via a ball bearing; the anti-drip arc baffle (304) extends into the interior and lower part of the guide arc plate (303) due to its own weight.

8. The check valve with an anti-drip structure according to claim 6, characterized in that: A push block (307) is installed at the rear end of the telescopic sealing ring (301), and the push block (307) is connected to the telescopic sealing ring (301) by a fixing screw. The push block (307) is in contact with the bottom end of the anti-drip arc baffle (304), and a pressure spring (308) is installed inside the sliding groove (306). The two ends of the pressure spring (308) are fixedly connected to the push block (307) and the telescopic sealing ring (301) respectively.

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