Low-noise knife valve

Abstract

The low-noise type knife valve comprises a knife valve shell, connecting pipes fixedly communicate with the left side face and the right side face of the knife valve shell correspondingly, flange plates are fixedly installed at the ends, away from each other, of the two connecting pipes correspondingly, and connecting plates are fixedly embedded into the left side face and the right side face of the knife valve shell correspondingly; a flowing opening is formed in the right side face of each connecting plate, and the ends, away from each other, of the two ceramic pipes fixedly communicate with ceramic guide rings. Through threaded connection of the threaded rod and the threaded hole, the plug board can be controlled to move up and down, passing and stopping of flowing media can be controlled, meanwhile, through cooperation of the ceramic pipe and the ceramic guide ring, noise generated in the friction process can be preliminarily absorbed after liquid enters the device, and the noise generated in the friction process can be effectively reduced. And noise penetrating through the ceramic tube can be secondarily absorbed through the polyurethane sound absorption tube, and meanwhile, the noise can be absorbed again through the sound absorption cotton, so that the absorption of the noise is effectively improved, and the generation of the noise is reduced.

Description

Technical Field

[0001] This application relates to the field of knife valve technology, and in particular to low-noise knife valves. Background Technology

[0002] A knife valve (also known as a knife gate valve) is a type of valve used to cut off or regulate the flow of fluid in a pipeline. It is typically used in applications involving fluids containing solid particles or high viscosity. Its unique design, with a knife-shaped valve plate resembling a blade, effectively cuts solid substances carried in the fluid, thereby ensuring unobstructed fluid flow.

[0003] Currently, while knife valves can intercept fluids, some shortcomings still exist in their use. For example, the medium flowing inside the knife valve is prone to friction with the internal structure of the valve body, which can easily generate noise during the flow of the medium inside the valve body.

[0004] Therefore, we propose a low-noise knife valve to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a low-noise knife valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A low-noise knife valve includes a knife valve housing. Connecting pipes are fixedly connected to both the left and right sides of the knife valve housing. Flanges are fixedly installed at the ends of the two connecting pipes that are far apart from each other. Connecting plates are fixedly embedded in both the left and right sides of the knife valve housing. A flow port is opened on the right side of each connecting plate. Ceramic tubes are fixedly installed on the sides of the two connecting plates that are far apart from each other. Ceramic guide rings are fixedly connected at the ends of the two ceramic tubes that are far apart from each other. A polyurethane sound-absorbing tube is fixedly installed on the outer surface of each ceramic guide ring. Sound-absorbing cotton is fixedly installed on the outer surface of each polyurethane sound-absorbing tube. A U-shaped plate is fixedly installed on the inner wall of the knife valve housing. An insert plate is slidably installed on the inner wall of the U-shaped plate. A threaded hole is opened on the upper surface of the insert plate. A threaded rod is rotatably installed on the upper surface of the knife valve housing via a bearing. The bottom end of the threaded rod extends into the interior of the threaded hole, and the threaded rod is threadedly connected to the threaded hole.

[0008] In a further embodiment, two sets of support blocks are fixedly installed on the outer surface of the U-shaped plate, and the ends of the two sets of support blocks that are far apart from each other are fixedly installed on the inner wall of the valve housing.

[0009] In a further embodiment, a limiting ring is fixedly installed on the outer surface of the threaded rod, and the limiting ring is located above the insert plate.

[0010] In a further embodiment, warning strips are fixedly installed on both the left and right sides of the valve housing, and the sides of the two warning strips that are close to each other are fixedly installed on the left and right sides of the valve housing, respectively.

[0011] In a further embodiment, a connecting ring is fixedly installed on the outer surface of each connecting pipe, and the two connecting rings are fixedly installed on the left and right sides of the valve housing, respectively.

[0012] In a further embodiment, a turntable is provided above the valve housing, and the bottom surface of the turntable is fixedly installed with the top end of the threaded rod.

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

[0014] This application utilizes a threaded connection with a threaded rod and threaded hole to control the up-and-down movement of the insert plate, thereby controlling the flow and cut-off of the medium. Simultaneously, by employing a ceramic tube and a ceramic guide ring, noise generated during friction can be initially absorbed after the liquid enters the device. Furthermore, a polyurethane sound-absorbing tube can provide secondary absorption of noise passing through the ceramic tube, and sound-absorbing cotton can further absorb the noise, thereby effectively improving noise absorption and reducing noise generation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a low-noise knife valve.

[0016] Figure 2 This is a three-dimensional structural schematic diagram of a side section of a low-noise knife valve.

[0017] Figure 3 This is a three-dimensional structural schematic diagram of a low-noise knife valve, shown in a cross-sectional view.

[0018] Figure 4 For low-noise knife valves Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1. Knife valve housing; 2. Connecting ring; 3. Connecting pipe; 4. Flange; 5. Turntable; 6. Warning strip; 7. Support block; 8. Threaded rod; 9. Limiting ring; 10. Threaded hole; 11. Insert plate; 12. U-shaped plate; 13. Ceramic tube; 14. Polyurethane sound-absorbing tube; 15. Connecting plate; 16. Flow port; 17. Ceramic guide ring; 18. Sound-absorbing cotton. Detailed Implementation

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 In this utility model, the low-noise knife valve includes a knife valve housing 1, a turntable 5 is provided on the top of the knife valve housing 1, the bottom surface of the turntable 5 is fixedly installed on the top of the threaded rod 8, the turntable 5 can be used to easily control the threaded rod 8, and warning strips 6 are fixedly installed on both the left and right sides of the knife valve housing 1. The sides of the two warning strips 6 that are close to each other are fixedly installed on the left and right sides of the knife valve housing 1, respectively. The warning strips 6 can warn non-staff members and prevent them from operating the device.

[0023] Both sides of the knife valve housing 1 are fixedly connected to connecting pipes 3. Each connecting pipe 3 has a connecting ring 2 fixedly installed on its outer surface. The sides of the two connecting rings 2 that are close to each other are fixedly installed to the left and right sides of the knife valve housing 1 respectively. The connecting rings 2 can be used to reinforce the connecting pipes 3 and prevent them from becoming loose. Flanges 4 are fixedly installed at the ends of the two connecting pipes 3 that are far apart from each other. Connecting plates 15 are fixedly embedded on both sides of the knife valve housing 1. Each connecting plate 15 has a flow port 16 on its right side. Ceramic tubes 13 are fixedly installed on the sides of the two connecting plates 15 that are far apart from each other. Ceramic guide rings 17 are fixedly connected at the ends of the two ceramic tubes 13 that are far apart from each other.

[0024] Each ceramic guide ring 17 has a polyurethane sound-absorbing tube 14 fixedly installed on its outer surface, and each polyurethane sound-absorbing tube 14 has a sound-absorbing cotton 18 fixedly installed on its outer surface. A U-shaped plate 12 is fixedly installed on the inner wall of the knife valve housing 1. Two sets of support blocks 7 are fixedly installed on the outer surface of the U-shaped plate 12. The ends of the two sets of support blocks 7 that are far apart from each other are fixedly installed on the inner wall of the knife valve housing 1. The support blocks 7 can reinforce the U-shaped plate 12 and prevent the U-shaped plate 12 from shaking. An insert plate 11 is slidably installed on the inner wall of the U-shaped plate 12. A threaded hole 10 is opened on the upper surface of the insert plate 11. A threaded rod 8 is rotatably installed on the upper surface of the knife valve housing 1 through a bearing. A limit ring 9 is fixedly installed on the outer surface of the threaded rod 8. The limit ring 9 is located above the insert plate 11. The limit ring 9 can be used to position the insert plate 11 and prevent the insert plate 11 from loosening. The bottom end of the threaded rod 8 extends into the interior of the threaded hole 10 and the threaded rod 8 is threadedly connected to the threaded hole 10.

[0025] The working principle of this application is:

[0026] In use, the device is first connected to the pipeline via flange 4. Then, the threaded rod 8 is rotated to connect with the threaded hole 10, causing the insert plate 11 to move upward. As the insert plate 11 moves upward, it opens the device, allowing the medium to flow. During the flow, the ceramic tube 13 and ceramic guide ring 17 work together to initially absorb the noise generated during the flow. The polyurethane sound-absorbing tube 14 and sound-absorbing cotton 18 further absorb the noise, effectively reducing the noise generated during use and preventing noise from interfering with the surrounding environment.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-noise knife valve, characterized in that: The device includes a knife valve housing (1), with connecting pipes (3) fixedly connected to both the left and right sides of the knife valve housing (1). Flanges (4) are fixedly installed at the ends of the two connecting pipes (3) that are far apart from each other. Connecting plates (15) are fixedly embedded in both the left and right sides of the knife valve housing (1). A flow port (16) is opened on the right side of each connecting plate (15). Ceramic tubes (13) are fixedly installed on the ends of the two connecting plates (15) that are far apart from each other. Ceramic guide rings (17) are fixedly connected at the ends of the two ceramic tubes (13) that are far apart from each other. Each ceramic guide ring (17)... The outer surface of the valve housing (1) is fixedly installed with polyurethane sound-absorbing tubes (14), and the outer surface of each polyurethane sound-absorbing tube (14) is fixedly installed with sound-absorbing cotton (18). The inner wall of the valve housing (1) is fixedly installed with a U-shaped plate (12), and the inner wall of the U-shaped plate (12) is slidably installed with a plug plate (11). The upper surface of the plug plate (11) is provided with a threaded hole (10). The upper surface of the valve housing (1) is rotatably installed with a threaded rod (8) through a bearing. The bottom end of the threaded rod (8) extends into the interior of the threaded hole (10), and the threaded rod (8) is threadedly connected to the threaded hole (10).

2. The low-noise knife valve according to claim 1, characterized in that: Two sets of support blocks (7) are fixedly installed on the outer surface of the U-shaped plate (12), and the ends of the two sets of support blocks (7) that are far apart from each other are fixedly installed on the inner wall of the valve housing (1).

3. The low-noise knife valve according to claim 1, characterized in that: A limiting ring (9) is fixedly installed on the outer surface of the threaded rod (8), and the limiting ring (9) is located above the insert plate (11).

4. The low-noise knife valve according to claim 1, characterized in that: Warning strips (6) are fixedly installed on both the left and right sides of the valve housing (1), and the two warning strips (6) are fixedly installed on the left and right sides of the valve housing (1) respectively.

5. The low-noise knife valve according to claim 1, characterized in that: Each of the connecting pipes (3) has a connecting ring (2) fixedly installed on its outer surface. The two connecting rings (2) are fixedly installed on the left and right sides of the valve housing (1) respectively.

6. The low-noise knife valve according to claim 1, characterized in that: A turntable (5) is provided above the valve housing (1), and the bottom surface of the turntable (5) is fixedly installed with the top end of the threaded rod (8).

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