High-performance through type knife gate valve with replaceable valve seat

Abstract

The utility model relates to the technical field of knife gate valves, and discloses a high-performance replaceable valve seat penetrating type knife gate valve which comprises a gate plate, a valve body is connected to the bottom of the gate plate, the gate plate is provided with an overflowing hole, the valve body is provided with a fluid channel hole, a first valve seat ring is arranged on the front side of the valve body, and a circular ring installation groove is formed in the inner wall of the first valve seat ring. The valve has the advantages that the dirt removing assembly is arranged in the circular ring mounting groove of the first valve seat ring on the front side of the valve body, the gear ring, the gear, the motor, the telescopic rod and the brush head work cooperatively, the motor drives the gear to drive the gear ring to rotate in the circular ring mounting groove, and the dirt removing assembly is arranged in the circular ring mounting groove. The brush head connected to the gear ring can clean a flashboard overflowing hole and a valve body fluid channel hole, and the four telescopic rods can properly adjust the position of the brush head according to the depth and the state of the holes.

Description

Technical Field

[0001] This utility model relates to the field of knife gate valve technology, specifically a high-performance, replaceable seat, through-type knife gate valve. Background Technology

[0002] In industrial fluid transport systems, knife gate valves play a crucial role. With the continuous development of modern industry, the requirements for the stability, reliability, and durability of fluid transport equipment are increasing.

[0003] The applicant found through a search that a Chinese patent discloses "a bidirectional sealing single-unit penetrating knife gate valve", with the publication (announcement) number "CN215059589U". This patent has the characteristics of strong practicality, long service life and good sealing performance.

[0004] However, when this device is exposed to fluids containing impurities, whether it is particulate matter suspended in the liquid or dust mixed in the gas, these substances tend to accumulate in the flow holes of the gate and the fluid passage holes of the valve body. These deposits gradually reduce the cross-sectional area of ​​the passage, leading to increased fluid resistance, unstable flow, and in severe cases, even complete blockage of the passage, causing system failure. This not only affects production efficiency but also brings high maintenance costs. Frequent maintenance and cleaning also reduce the overall reliability and service life of the valve. Therefore, we propose a high-performance, replaceable seat through-type knife gate valve. Utility Model Content

[0005] The purpose of this invention is to provide a high-performance, replaceable seat through-type knife gate valve.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-performance replaceable valve seat through-type knife gate valve, including a gate plate, a valve body connected to the bottom of the gate plate, a flow hole on the gate plate, a fluid passage hole on the valve body, a first valve seat ring on the front side of the valve body, an annular mounting groove on the inner wall of the first valve seat ring, a cleaning component installed inside the annular mounting groove, the cleaning component including a gear ring, a gear, a motor, four telescopic rods and four brush heads, the gear ring being movably connected inside the annular mounting groove, the gear meshing with the outer side of the gear ring, the motor drive end being connected to the center of the front side of the gear, the four telescopic rods being fixedly connected to the inner wall of the gear ring at equal intervals through four sets of connecting blocks, and the four brush heads being fixedly connected to one end of each of the four telescopic rods, with one side of each brush head contacting both the inner wall of the flow hole and the inner wall of the fluid passage hole.

[0007] As a further embodiment of this utility model: a plurality of through holes are provided on the front side of the first valve seat ring.

[0008] As a further embodiment of this utility model: a second valve seat ring is provided on the rear side of the valve body, a connecting groove is provided on the rear side of the second valve seat ring, a filter screen plate is installed in the connecting groove, a set of clamping members are provided on both sides of the filter screen plate, a limit post is provided on the inner wall of the clamping member, a limit groove is provided on both sides of the second valve seat ring, and the limit post and the limit groove are connected to each other.

[0009] As a further embodiment of this utility model: a cooling annular tube is installed inside the second valve seat ring, the cooling annular tube is connected to a conveying pipe, the conveying pipe passes through the top of the second valve seat ring, two sets of limiting annular plates are provided on the front side of the filter screen plate, and the two sides of the cooling annular tube are in close contact with one side of the two sets of limiting annular plates.

[0010] As a further embodiment of this utility model, a support frame is connected to the front and rear sides of the top of the valve body.

[0011] As a further embodiment of this utility model: the support frame is provided with a valve stem connected to the gate and an actuator connected to the valve stem.

[0012] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:

[0013] 1. This utility model provides a cleaning component by installing a cleaning unit in the annular mounting groove of the first valve seat ring on the front side of the valve body. The toothed ring, gear, motor, telescopic rod and brush head work together. The motor drives the gear to rotate the toothed ring in the annular mounting groove, so that the brush head connected to the toothed ring can clean the gate flow hole and the fluid passage hole of the valve body. The four telescopic rods can adjust the position of the brush head according to the depth and condition of the hole. This active cleaning method can effectively remove various dirt, impurities and sediments accumulated on the hole wall, prevent them from affecting the normal flow of fluid, reduce system failures and maintenance costs caused by blockage, and improve the overall reliability and service life of the valve.

[0014] 2. This utility model has a filter screen plate installed in the second valve seat ring on the rear side of the valve body. Through the cooperation of the clamping parts on both sides, the limiting post and the limiting groove, the filter screen plate can be firmly installed in the connecting groove and is easy to disassemble and replace. When the fluid flows through the valve, it can effectively intercept various large particulate impurities, prevent them from entering the core area of ​​the valve and downstream equipment, protect the valve's seals, valve seat and other key components from wear and damage, and reduce the probability of failure. When the filter screen plate needs to be cleaned or replaced, its convenient installation structure makes the operation simple and easy.

[0015] 3. This utility model connects the conveying pipe through a cooling annular pipe installed inside the second valve seat ring. The two sides of the cooling annular pipe are in close contact with the two sets of limiting annular plates on the front side of the filter screen plate. During operation, the filter screen plate can be cooled. This is especially important for valves that convey high-temperature fluids or operate in high-temperature environments. It can prevent the filter screen plate from deforming and being damaged due to high temperature, ensure the durability of its filtration performance, and improve the overall high-temperature resistance of the valve.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the device in the embodiment of this utility model;

[0018] Figure 2 This is a partial perspective view of the device in the embodiment of this utility model;

[0019] Figure 3 This is a partial front view of the device in an embodiment of the present invention;

[0020] Figure 4 This is a three-dimensional schematic diagram of the filter screen in an embodiment of the present utility model;

[0021] Figure 5 This is a three-dimensional schematic diagram of the dirt removal component in an embodiment of this utility model.

[0022] In the diagram: 1. Gate; 101. Flow hole; 2. Valve body; 201. Fluid passage hole; 3. First valve seat ring; 4. Circular mounting groove; 5. Stain removal assembly; 501. Gear ring; 502. Gear; 503. Motor; 504. Telescopic rod; 505. Brush head; 506. Connecting block; 6. Second valve seat ring; 7. Connecting groove; 8. Filter screen; 9. Clamping component; 901. Limiting post; 10. Limiting groove; 11. Cooling annular pipe; 12. Delivery pipe; 13. Limiting annular plate; 14. Support frame; 15. Valve stem; 16. Actuator. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0024] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] Please see the appendix Figure 1 -Attached Figure 5 This utility model discloses a high-performance, replaceable seat, through-type knife gate valve. A valve body 2 is connected to the bottom of a gate plate 1. The gate plate 1 has a flow passage 101, and the valve body 2 has a fluid passage 201. A first valve seat ring 3 is provided on the front side of the valve body 2. An annular mounting groove 4 is formed on the inner wall of the first valve seat ring 3. A cleaning component 5 is installed inside the annular mounting groove 4. The cleaning component 5 includes a gear ring 501, a gear 502, a motor 503, four telescopic rods 504, and four brush heads 505. The gear ring 501 is movably connected inside the annular mounting groove 4, and the gear 502 meshes with the outer side of the gear ring 501. The drive end of the motor 503 is connected to the center of the front side of the gear 502. When the motor 503 is started, it can drive the gear 502 to rotate stably, thereby causing the gear ring 501 to move circumferentially in the annular mounting groove 4. The four telescopic rods 504 are fixedly connected to the inner wall of the gear ring 501 at equal intervals through four sets of connecting blocks 506. The four brush heads 505 are fixedly connected to one end of the four telescopic rods 504 respectively, so that the four brush heads 505 can achieve all-round movement coverage as the gear ring 501 rotates. One side of the brush head 505 is in contact with the inner wall of the flow hole 101 and the inner wall of the fluid channel hole 201.

[0026] In the first embodiment, a number of through holes are provided on the front side of the first valve seat ring 3, and a second valve seat ring 6 is provided on the rear side of the valve body 2. A connecting groove 7 is provided on the rear side of the second valve seat ring 6, and a filter screen plate 8 is installed in the connecting groove 7. A set of clamping members 9 are provided on both sides of the filter screen plate 8. A limit post 901 is provided on the inner wall of the clamping member 9. Limit grooves 10 are provided on both sides of the second valve seat ring 6, and the limit post 901 is connected to the limit groove 10.

[0027] Specifically, a magnet is provided on the inner wall of the connecting groove 7, and the magnet is tightly attached to the metal part of the filter screen plate 8. The limiting post 901 provided on the inner wall of the clamping member 9 is connected to the limiting groove 10 opened on both sides of the second valve seat ring 6.

[0028] In embodiment 2, a cooling annular pipe 11 is installed inside the second valve seat ring 6. The cooling annular pipe 11 is connected to a conveying pipe 12, which passes through the top of the second valve seat ring 6. Two sets of limiting annular plates 13 are provided on the front side of the filter screen plate 8. The two sides of the cooling annular pipe 11 are in close contact with one side of the two sets of limiting annular plates 13. A support frame 14 is connected to the front and rear sides of the top of the valve body 2. A valve stem 15 connected to the gate plate 1 and an actuator 16 connected to the valve stem 15 are provided on the support frame 14.

[0029] Specifically, during valve operation, the cooling medium can flow smoothly into the cooling annular pipe 11 through the delivery pipe 12. Due to the large temperature difference between the cooling annular pipe 11 and the surrounding environment, it can quickly absorb and carry away heat. The valve stem 15, which is connected to the gate 1, is connected to the gate 1 through a precise mechanical structure, which can accurately transmit the power generated by the actuator 16 to the gate 1, so as to realize the precise opening and closing action of the gate 1 in the valve body 2.

[0030] Working principle:

[0031] When the high-performance replaceable seat through-type knife gate valve is in operation or during regular maintenance, the motor 503 is started. The drive end of the motor 503 drives the gear 502 to rotate. Since the gear 502 is meshed with the outer side of the gear ring 501, the gear ring 501 begins to rotate circumferentially in the annular mounting groove 4. The four telescopic rods 504 connected to the inner wall of the gear ring 501 are equidistantly distributed through four sets of connecting blocks 506. The brush head 505 at one end moves accordingly. The four telescopic rods 504 can flexibly adjust the position of the brush head 505 according to the depth and actual state of the flow hole 101 of the gate plate 1 and the fluid channel hole 201 of the valve body 2, so that one side of it is always in close contact with the hole wall. As the gear ring 501 continues to rotate, the brush head 505 thoroughly cleans the inner wall of the flow hole 101 and the inner wall of the fluid channel hole 201, effectively removing accumulated dirt, impurities and sediments.

[0032] When the fluid flows through the valve, it first passes through the filter screen plate 8 in the second valve seat ring 6 behind the valve body 2. The filter screen plate 8 is connected to the limiting grooves 10 on both sides of the second valve seat ring 6 through the limiting post 901 on the inner wall of the clamping parts 9 on both sides, so as to be stably installed in the connecting groove 7. Under the impact of the fluid, the filter screen plate 8 effectively intercepts various large particles of impurities with its own structure, reducing the probability of failure. When the filter screen plate 8 needs to be cleaned or replaced, the clamping parts 9 can be pulled along the direction of the limiting groove 10 to easily remove the filter screen plate 8.

[0033] When the valve handles high-temperature fluids or operates in a high-temperature environment, the cooling medium enters the cooling annular pipe 11 installed inside the second valve seat ring 6 through the delivery pipe 12. The two sides of the cooling annular pipe 11 are in close contact with the two sets of limiting annular plates 13 on the front side of the filter screen plate 8, forming a good heat conduction path. The cooling annular pipe 11 absorbs the heat of the filter screen plate 8 by virtue of the thermal conductivity of its own material. The cooling medium circulates in the pipe to carry away the heat, thereby effectively reducing the temperature of the filter screen plate 8.

[0034] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0037] For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. A high-performance, replaceable seat, through-type knife gate valve, comprising a gate (1), a valve body (2) connected to the bottom of the gate (1), the gate (1) having an overflow hole (101), and the valve body (2) having a fluid passage hole (201), characterized in that: A first valve seat ring (3) is provided on the front side of the valve body (2). A circular mounting groove (4) is provided on the inner wall of the first valve seat ring (3). A cleaning component (5) is installed inside the circular mounting groove (4). The cleaning component (5) includes a gear ring (501), a gear (502), a motor (503), four telescopic rods (504), and four brush heads (505). The gear ring (501) is movably connected inside the circular mounting groove (4). The gear (502) is movably connected to the inside of the circular mounting groove (4). 2) Engages with the outer side of the gear ring (501), the drive end of the motor (503) is connected to the front center of the gear (502), the four telescopic rods (504) are fixedly connected to the inner wall of the gear ring (501) at equal intervals through four sets of connecting blocks (506), the four brush heads (505) are fixedly connected to one end of the four telescopic rods (504) respectively, and one side of the brush head (505) is in contact with the inner wall of the flow hole (101) and the inner wall of the fluid channel hole (201).

2. The high-performance replaceable seat through-type knife gate valve according to claim 1, characterized in that: The first valve seat ring (3) has several through holes on its front side.

3. The high-performance replaceable seat through-type knife gate valve according to claim 1, characterized in that: A second valve seat ring (6) is provided on the rear side of the valve body (2). A connecting groove (7) is provided on the rear side of the second valve seat ring (6). A filter screen plate (8) is installed in the connecting groove (7). A set of clamping members (9) is provided on both sides of the filter screen plate (8). A limit post (901) is provided on the inner wall of the clamping member (9). Limit grooves (10) are provided on both sides of the second valve seat ring (6). The limit post (901) and the limit groove (10) are connected to each other.

4. The high-performance replaceable seat through-type knife gate valve according to claim 3, characterized in that: The second valve seat ring (6) is equipped with a cooling annular tube (11), which is connected to a conveying pipe (12). The conveying pipe (12) passes through the top of the second valve seat ring (6). Two sets of limiting annular plates (13) are provided on the front side of the filter screen plate (8). The two sides of the cooling annular tube (11) are in close contact with one side of the two sets of limiting annular plates (13).

5. The high-performance replaceable seat through-type knife gate valve according to claim 1, characterized in that: A support frame (14) is connected to the front and rear sides of the top of the valve body (2).

6. The high-performance replaceable seat through-type knife gate valve according to claim 5, characterized in that: The support frame (14) is provided with a valve stem (15) connected to the gate (1) and an actuator (16) connected to the valve stem (15).

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