High performance low noise silencing check valve

Abstract

This utility model proposes a high-performance, low-noise, silencer check valve with a simple structure and convenient valve plate replacement. It includes a valve body, an inlet channel, an outlet channel, and a fixing rod within the valve body. A valve seat is provided at the inlet channel, and a water-passing frame is provided at the outlet channel. A valve stem slides through the water-passing frame, and a valve plate is provided at the end of the valve stem. A connecting rod is provided at one end of the fixing rod, and the valve plate is located at the other end of the fixing rod. A socket channel is provided on the valve stem, and the connecting rod passes through the socket channel. An anti-detachment device is provided on the valve stem to prevent the connecting rod from detaching. A maintenance channel communicating with the outside is provided on the side of the valve body, and a sealing cover is provided on the valve body via a fixing device to seal the maintenance channel.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a high-performance, low-noise, silent check valve. Background Technology

[0002] A check valve is a valve that automatically opens and closes its disc based on the flow of the medium itself, used to prevent backflow of the medium. It is a commonly used connection component in pipelines. When the inlet pressure is greater than the sum of the weight of the valve disc and its flow resistance, the valve is opened. Conversely, when the medium flows backward, the valve closes.

[0003] Existing check valves are prone to damage due to frequent impacts between the valve plate and the valve seat during use. When replacing the check valve, it must be disassembled, which is inefficient and inconvenient for operators.

[0004] This utility model was developed to solve this problem. Utility Model Content

[0005] Therefore, in view of the above problems, this utility model proposes a high-performance, low-noise, silent check valve with a simple structure and convenient valve plate replacement.

[0006] To solve the above-mentioned technical problems, the solution adopted by this utility model is as follows: a high-performance, low-noise, silencer check valve, including a valve body, an inlet channel, an outlet channel, and a fixing rod formed in the valve body. A valve seat is provided at the inlet channel, and a water passer is provided at the outlet channel. A valve stem slides through the water passer and a valve plate is provided at the end of the valve stem. A connecting rod is provided at one end of the fixing rod, and the valve plate is located at the other end of the fixing rod. A socket channel is formed on the valve stem, and the connecting rod passes through the socket channel. An anti-detachment device is provided on the valve stem to prevent the connecting rod from detaching. A maintenance channel communicating with the outside is formed on the side of the valve body, and a sealing cover is provided on the valve body by a fixing device to seal the maintenance channel.

[0007] A further improvement is that the anti-detachment device includes an anti-detachment block, the valve stem has a sliding channel communicating with the socket channel, the anti-detachment block is slidably disposed in the sliding channel, the connecting rod has an anti-detachment channel, the valve stem has a pushing device for pushing the anti-detachment block into the sliding channel, and the valve stem has a disengagement device for disengaging the anti-detachment block from the anti-detachment channel.

[0008] A further improvement is that the pushing device is a pushing spring, one end of which is connected to the anti-detachment block, and the other end of which is connected to the inner wall of the sliding channel.

[0009] A further improvement is that the detachment device is a rotating ring, and the valve stem has a rotating channel at the sliding channel position. The valve stem is rotatably disposed in the rotating channel. The rotating ring is matched with an anti-detachment block and has a magnetic block. The anti-detachment block has magnetism that attracts the magnetic block.

[0010] A further improvement is that a friction ring is provided between the outer wall of the rotating channel and the rotating ring to prevent the rotating ring from rotating on its own.

[0011] A further improvement is that it also includes a wrapping cloth filled with sound-absorbing cotton, which wraps around the outer wall of the valve body and is attached to the valve body by Velcro.

[0012] A further improvement is that the fixing device is as follows: the sealing cover is locked to the valve body by bolts, and a sealing ring is provided between the sealing cover and the valve body to prevent water leakage.

[0013] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0014] The valve plate is simple in structure and easy to replace. During maintenance, the operator can reach into the valve body through the maintenance channel, turn the rotating ring, and remove the valve plate for replacement. This avoids the need to remove and open the check valve, greatly improving maintenance efficiency and facilitating maintenance operations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a high-performance, low-noise, silencer check valve according to an embodiment of this utility model.

[0016] Figure 2 This is an enlarged structural schematic diagram of embodiment A of this utility model. Detailed Implementation

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0018] refer to Figure 1-2The present invention discloses a high-performance, low-noise, silencer check valve, comprising a valve body 1, an inlet channel 2, an outlet channel, and a fixing rod 9 within the valve body 1. A valve seat is provided at the inlet channel 2, and a water passage frame 3 is provided at the outlet channel. A valve stem 4 is slidably mounted on the water passage frame 3. A valve plate 5 is provided at the end of the valve stem 4. A connecting rod is provided at one end of the fixing rod 9, and the valve plate 5 is located at the other end of the fixing rod 9. A socket channel is provided on the valve stem 4, and the connecting rod passes through the socket channel. An anti-detachment device is provided on the valve stem 4 to prevent the connecting rod from detaching. A maintenance channel 6 communicating with the outside is provided on the side of the valve body 1. A sealing cover 7 is bolted to the valve body 1 to seal the maintenance channel 6. A sealing ring is provided between the sealing cover 7 and the valve body 1 to prevent water leakage.

[0019] Specifically, the anti-detachment device includes an anti-detachment block 10. The valve stem 4 has a sliding channel 12 that communicates with the socket channel. The anti-detachment block 10 is slidably disposed in the sliding channel 12. The connecting rod has an anti-detachment channel. The valve stem 4 has a push spring 10 that pushes the anti-detachment block 10 into the sliding channel 12. One end of the push spring 10 is connected to the anti-detachment block 10, and the other end of the push spring 10 is connected to the inner wall of the sliding channel 12. The valve stem 4 has a rotating ring 13 that causes the anti-detachment block 10 to disengage from the anti-detachment channel. The valve stem 4 has a rotating channel located at the position of the sliding channel 12. The valve stem 4 is rotatably disposed in the rotating channel. The rotating ring 13 is equipped with a magnetic block (not shown in the figure) that matches the anti-detachment block 10. The anti-detachment block 10 has magnetism that attracts the magnetic block. When the valve plate 5 inside the check valve is damaged, the sealing cover 7 is opened, and the operator reaches in and rotates the rotating ring 13, so that the magnetic block inside the rotating ring 13 and the anti-detachment block 10 are on the same straight line. At this time, the magnetic block and the anti-detachment block 10 attract each other, causing the anti-detachment block 10 to slide into the sliding channel 12, releasing the jamming. Then, the valve plate 5 is removed, and the new connection is inserted into the socket channel. Then, the rotating ring 13 is reversed, so that the magnetic block inside the rotating ring 13 and the anti-detachment block 10 are misaligned. Then, the spring 10 is pushed to reset, pushing the anti-detachment block 10 to slide into the anti-detachment channel, thereby limiting the connecting rod. Finally, the sealing cover 7 is locked, and the replacement is completed. This avoids the need to remove and disassemble the check valve, greatly improving maintenance efficiency and facilitating maintenance operations for operators.

[0020] To prevent the connecting rod from disengaging due to the rotation of the rotating ring 13 during use, a friction ring 14 is provided between the outer wall of the rotating channel and the rotating ring 13 to hinder the rotation of the rotating ring 13.

[0021] In order to improve the noise reduction effect, a wrapping cloth 8 filled with sound-absorbing cotton is also included. The wrapping cloth 8 wraps around the outer wall of the valve body 1 and is attached to the valve body 1 by Velcro.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions above are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A high-performance, low-noise, silencer check valve, comprising a valve body, an inlet channel and an outlet channel formed within the valve body, wherein a valve seat is provided at the inlet channel, a water passer is provided at the outlet channel, a valve stem is slidably mounted on the water passer, and a valve plate is provided at the end of the valve stem, characterized in that: It also includes a fixing rod, one end of which is provided with a connecting rod, and the valve plate is located at the other end of the fixing rod. The valve stem has a socket channel, and the connecting rod passes through the socket channel. The valve stem is provided with an anti-detachment device to prevent the connecting rod from detaching. The valve body has a maintenance channel connected to the outside on its side, and the valve body is provided with a sealing cover that seals the maintenance channel through a fixing device.

2. A high performance low noise silencing check valve according to claim 1, characterized in that: The anti-detachment device includes an anti-detachment block, a sliding channel communicating with the socket channel is provided on the valve stem, the anti-detachment block is slidably disposed in the sliding channel, an anti-detachment channel is provided on the connecting rod, a pushing device is provided in the valve stem to push the anti-detachment block into the sliding channel, and a disengagement device is provided on the valve stem to disengage the anti-detachment block from the anti-detachment channel.

3. A high performance low noise silencing check valve according to claim 2, characterized in that: The pushing device is a pushing spring, one end of which is connected to the anti-detachment block, and the other end of which is connected to the inner wall of the sliding channel.

4. A high performance low noise silencing check valve according to claim 2, wherein: The detachment device is a rotating ring. A rotating channel is provided on the valve stem at the sliding channel position. The valve stem is rotatably disposed in the rotating channel. A magnetic block is provided on the rotating ring to match the anti-detachment block. The anti-detachment block has magnetism that attracts the magnetic block.

5. A high performance low noise silencing check valve according to claim 4 wherein: A friction ring is provided between the outer wall of the rotating channel and the rotating ring to prevent the rotating ring from rotating on its own.

6. A high performance low noise silencing check valve according to claim 4, wherein: It also includes a wrapping cloth filled with sound-absorbing cotton, which wraps around the outer wall of the valve body and is attached to the valve body by Velcro.

7. The high-performance, low-noise, silencer check valve according to claim 1, characterized in that: The fixing device is as follows: the sealing cover is locked to the valve body by bolts, and a sealing ring is provided between the sealing cover and the valve body to prevent water leakage.

Images