Low-cost split type valve seat for knife gate valve

Abstract

The utility model discloses a low-cost split type valve seat for a knife gate valve, which comprises a valve main body, the valve main body is composed of a side valve body I and a side valve body II, a gate plate groove is arranged in the side valve body I, valve seat grooves are communicated with the two sides of the gate plate groove in the side valve body I, and the valve seat grooves are communicated with the gate plate groove in the side valve body II. U-shaped ring grooves are formed in the left side, the right side and the lower end of the gate plate groove in a communicating mode, the upper ends of the two sides of each U-shaped ring groove are communicated with the corresponding valve seat grooves respectively, valve seat blocks are clamped in the valve seat grooves, through grooves matched with the valve seat blocks are formed in the positions, corresponding to the U-shaped ring grooves, of the valve seat blocks in a communicating mode, and U-shaped sealing rings are clamped in the U-shaped ring grooves. The upper ends of the two sides of the U-shaped sealing ring are clamped in the through grooves correspondingly, and the end, away from the first side valve body, of the valve seat block and the end, away from the second side valve body, of the U-shaped sealing ring abut against the second side valve body. The valve body is small in machining amount and low in cost, and the flashboard is easy to open.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more particularly to a low-cost split valve seat for a knife gate valve. Background Art

[0002] The knife gate valve is also called the knife-type gate valve, knife-gate gate valve, slurry valve, and mud valve. Its opening and closing parts are gate plates. The movement direction of the gate plates is perpendicular to the direction of the fluid. The medium is cut off by the blade-shaped gate plate that can cut the fiber material. The sealing of the knife gate valve is usually achieved by providing a valve seat in the valve body. The valve seat and the side wall of the knife gate valve are against each other to show the sealing function.

[0003] In the prior art, a Chinese utility model with publication number CN200968429Y is a knife gate valve, in which the sealing form is provided with a groove in the middle cavity of the valve body, and a sealing strip is provided in the groove to achieve sealing, and the sealing strip is the valve seat. Since the valve seat of this utility model is one-piece, the entire section of the groove matches the valve seat. When the valve seat is provided with a raised structure to enhance the sealing effect, the entire groove needs to be processed into a depth and a complex structure matching the valve seat, which will increase the processing volume and thus increase the processing cost. In addition, when part of the structure of the one-piece valve seat is damaged, it needs to be replaced as a whole, thereby increasing the material cost. In addition, the one-piece valve seat has a large thickness, so the contact area with the gate is large, which will increase the friction, making it difficult to open the gate, and will also increase the material cost of the valve seat. Therefore, the present application proposes a low-cost split valve seat for a knife gate valve. Utility Model Content

[0004] The utility model aims to provide a low-cost split valve seat for a knife gate valve, which has small valve body processing amount, low cost and easy gate opening.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A low-cost split valve seat for a knife gate valve comprises a valve body, wherein the valve body consists of a side valve body one and a side valve body two, the side valve body one is provided with a gate plate groove, the side valve body one is provided with valve seat grooves on both sides of the gate plate groove, the left and right sides and the lower end of the gate plate groove are both provided with U-shaped ring grooves, the upper ends of both sides of the U-shaped ring groove are respectively communicated with the corresponding valve seat grooves, a valve seat block is clamped in the valve seat groove, a through groove matching the position of the U-shaped ring groove is communicated on the valve seat block, a U-shaped sealing ring is clamped in the U-shaped ring groove, the upper ends of both sides of the U-shaped sealing ring are respectively clamped in the through grooves, and the valve seat block and the end of the U-shaped sealing ring away from the side valve body one are both against the side valve body two.

[0007] By adopting the above technical solution, the utility model has the following advantages:

[0008] The utility model only has the valve seat groove and the gate plate groove on one side of the side valve body, which effectively reduces the thickness of the valve seat block and the U-shaped sealing ring, thereby reducing the material cost of the valve seat block and the U-shaped sealing ring. In addition, it also effectively reduces the contact area with the gate plate, thereby reducing the friction of the gate plate moving up and down, making it easy to open and close the gate plate; the utility model has the valve seat block and the U-shaped sealing ring, so that the valve seat is in a split state. When processing the valve body, it is only necessary to perform deep processing on the position of the valve seat groove, and the position of the U-shaped ring groove does not need to be processed to be consistent with the depth of the valve seat groove, but only needs to be processed into a ring groove with a depth matching the U-shaped sealing ring, thereby reducing the processing amount, thereby effectively reducing the processing cost, and further improving the processing efficiency. The split setting can also be used to replace the valve seat block or the U-shaped sealing ring separately after it is damaged, thereby reducing the expenditure of material cost. The split setting also makes it unnecessary for the position of the U-shaped sealing ring to be as thick as the valve seat block, thereby reducing the contact area between the gate plate and the U-shaped valve seat, further making it easy to open and close the gate plate, and reducing the opening noise.

[0009] Furthermore, the cross section of the valve seat block is L-shaped, and a protrusion 1 and a protrusion 2 are fixedly provided on one side of the valve seat block close to the side valve body 1, and the valve seat groove matches the protrusion 1 and the protrusion 2.

[0010] By adopting the above technical solution, the utility model has the following advantages:

[0011] The arrangement of the protrusion one and the protrusion two of the utility model enables the valve seat block to be firmly stuck in the valve seat groove and will not fall out. In addition, the contact area with the side valve body one is increased, thereby strengthening the sealing performance between the valve seat block and the valve body, which can effectively prevent medium leakage.

[0012] Furthermore, the through groove and the U-shaped ring groove are both connected to each other on a side away from the side valve body 2 and are provided with a card groove 1, and the card groove 1 is connected to each other on a side away from the through groove and is provided with a card groove 2, the U-shaped sealing ring matches the through groove and the U-shaped ring groove, and the U-shaped sealing ring is fixedly provided with a sealing part 1 at a position corresponding to the card groove 1, and the sealing part 1 is fixedly provided with a sealing part 2 at a side away from the U-shaped sealing ring and corresponds to the card groove 2, and the sealing part 1 and the sealing part 2 are respectively clamped in the corresponding card groove 1 and the card groove 2.

[0013] By adopting the above technical solution, the utility model has the following advantages:

[0014] The provision of the first and second clamping grooves of the utility model increases the contact area between the U-shaped sealing ring and the valve seat block and the side gate plate one, thereby increasing the sealing performance between the U-shaped sealing ring and the valve seat block and the side gate plate one, and can effectively prevent medium leakage.

[0015] Furthermore, a gate plate is inserted into the gate plate groove, and two ends of the gate plate are respectively abutted against the corresponding valve seat block and the U-shaped sealing ring.

[0016] By adopting the above technical solution, the utility model has the following advantages:

[0017] The arrangement of the gate of the utility model plays the role of cutting off the medium flow channel.

[0018] Furthermore, an inner groove is provided at the inner upper end of the side valve body 1 and the side valve body 2 corresponding to the position of the gate plate, and a sealing strip is embedded in the inner groove, and one end of the sealing strip away from the inner groove is against the gate plate.

[0019] By adopting the above technical solution, the utility model has the following advantages:

[0020] The arrangement of the inner groove and the sealing strip of the utility model strengthens the sealing performance between the upper end of the gate plate and the valve body, and can effectively prevent the leakage of the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 This is a structural schematic diagram of a side valve body of the utility model;

[0023] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve seat groove when looking down at the utility model;

[0025] Figure 4 For this utility model Figure 3 The enlarged structural diagram at B in the middle;

[0026] Figure 5 This is a schematic diagram of the structure of the valve seat block of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the U-shaped sealing ring of the utility model;

[0028] Figure 7 For this utility model Figure 6 Enlarged structural diagram at point C in the middle.

[0029] Figure numerals: 1. Side valve body one; 101. Valve seat groove; 102. U-shaped ring groove; 103. Inner groove; 2. U-shaped sealing ring; 201. Sealing part one; 202. Sealing part two; 3. Valve seat block; 301. Protrusion one; 302. Protrusion two; 303. Through groove; 4. Gate groove; 5. Side valve body two; 6. Gate; 7. Slot one; 8. Slot two. DETAILED DESCRIPTION

[0030] like Figures 1 to 6 As shown, in the specific embodiment, a low-cost split valve seat for a knife gate valve includes a valve body, which is composed of a side valve body 1 and a side valve body 5. A gate groove 4 is provided in the side valve body 1, and valve seat grooves 101 are provided on both sides of the gate groove 4 in the side valve body 1, and U-shaped ring grooves 102 are provided on the left and right sides and the lower end of the gate groove 4. The upper ends of the U-shaped ring groove 102 are respectively communicated with the corresponding valve seat grooves 101, and a valve seat block 3 is clamped in the valve seat groove 101. A through groove 303 matching the U-shaped ring groove 102 is provided on the valve seat block 3 at a position corresponding to the U-shaped ring groove 102, and a U-shaped sealing ring 2 is clamped in the U-shaped ring groove 102. The upper ends of the U-shaped sealing ring 2 on both sides are respectively clamped in the through groove 303, and the valve seat block 3 and the end of the U-shaped sealing ring 2 away from the side valve body 1 are both against the side valve body 5.

[0031] Through the above arrangement, the utility model is provided with the valve seat groove 101 and the gate plate groove 4 only on one side of the side valve body 1, which effectively reduces the thickness of the valve seat block 3 and the U-shaped sealing ring 2, thereby reducing the material cost of the valve seat block 3 and the U-shaped sealing ring 2. In addition, the contact area with the gate plate 6 is effectively reduced, thereby reducing the friction force of the gate plate 6 moving up and down, making it easy to open and close the gate plate 6; the arrangement of the valve seat block 3 and the U-shaped sealing ring 2 of the utility model makes the valve seat in a split state. When processing the valve body, only the position of the valve seat groove 101 needs to be processed deeply, and the U The position of the ring groove 102 does not need to be processed to be consistent with the depth of the valve seat groove 101, but only needs to be processed into a ring groove with a depth matching that of the U-shaped sealing ring 2, thereby reducing the processing amount, thereby effectively reducing the processing cost, and further improving the processing efficiency. The split setting can also be used when the valve seat block 3 or the U-shaped sealing ring 2 is damaged, so as to reduce the material cost expenditure. The split setting also makes it unnecessary for the position of the U-shaped sealing ring 2 to be as thick as the valve seat block 3, thereby reducing the contact area between the gate plate 6 and the U-shaped valve seat, further making it easy to open and close the gate plate 6 and reducing the opening noise.

[0032] like Figure 4 , Figure 5 and Figure 7As shown, the cross-section of the valve seat block 3 is L-shaped, and a protrusion 1 301 and a protrusion 2 302 are fixedly provided on the side of the valve seat block 3 close to the side valve body 1, and the valve seat groove 101 matches the protrusion 1 301 and the protrusion 2 302; the through groove 303 and the U-shaped ring groove 102 are both connected to a clamping groove 1 7 on the side away from the side valve body 2 5, and the clamping groove 17 is connected to a clamping groove 2 8 on the side away from the through groove 303, and the U-shaped sealing ring 2 matches the through groove 303 and the U-shaped ring groove 102, and a sealing part 1 201 is fixedly provided at the position of the U-shaped sealing ring 2 corresponding to the clamping groove 1 7, and a sealing part 202 is fixedly provided at the position of the sealing part 1 201 away from the U-shaped sealing ring 2 corresponding to the clamping groove 2 8, and the sealing part 1 201 and the sealing part 202 are respectively clamped in the corresponding clamping groove 1 7 and the clamping groove 2 8.

[0033] Through the above settings, the settings of the protrusion 1 301 and the protrusion 2 302 of the utility model enable the valve seat block 3 to be firmly clamped in the valve seat groove 101 and will not fall out. In addition, the contact area with the side valve body 1 is increased, thereby enhancing the sealing performance between the valve seat block 3 and the valve body, and can effectively prevent medium leakage; the settings of the clamping groove 1 7 and the clamping groove 2 8 of the utility model increase the contact area between the U-shaped sealing ring 2 and the valve seat block 3 and the side gate plate 6, thereby increasing the sealing performance between the U-shaped sealing ring 2 and the valve seat block 3 and the side gate plate 6, and can effectively prevent medium leakage.

[0034] like Figures 1 to 3 As shown, a gate plate 6 is inserted into the gate plate groove 4, and the two ends of the gate plate 6 are respectively abutted against the corresponding valve seat block 3 and the U-shaped sealing ring 2; an inner groove 103 is provided at the position corresponding to the gate plate 6 at the upper end of the side valve body 1 and the side valve body 2 5, and a sealing strip is embedded in the inner groove 103, and the end of the sealing strip away from the inner groove 103 is abutted against the gate plate 6.

[0035] The provision of the gate plate 6 of the utility model plays the role of cutting off the medium flow channel; the provision of the inner groove 103 and the sealing strip of the utility model strengthens the sealing performance between the upper end of the gate plate 6 and the valve body, which can effectively prevent the leakage of the medium.

[0036] Working principle: When manufacturing and processing the valve seat groove 101 and the U-shaped ring groove 102, it is only necessary to process the position of the valve seat groove 101 more deeply, and the position of the U-shaped ring groove 102 does not need to be processed to be consistent with the depth of the valve seat groove 101, but only needs to be processed into a shallower U-shaped ring groove 102 that matches the U-shaped sealing ring 2, thereby reducing the processing amount and thus improving the processing efficiency. Processing the valve seat groove 101 and the U-shaped ring groove 102 only on one side of the side valve body 1 can also effectively reduce the processing amount. In addition, it also reduces the production cost of the valve seat block 3 and the U-shaped sealing ring 2; when installing, insert both ends of the U-shaped sealing ring 2 into the The sealing part 1 201 and the sealing part 2 202 are respectively clamped in the corresponding clamping groove 1 7 and clamping groove 2 8 on the valve seat block 3 in the through groove 303 of the valve seat block 3, and then the valve seat block 3 and one side of the U-shaped sealing ring 2 are respectively aligned with the valve seat groove 101 and the U-shaped ring groove 102 of the side valve body 1 and inserted, and then the sealing strip is inserted into the inner groove 103, and then the gate 6 is placed in the gate groove 4, and finally the side valve body 1 and the side valve body 2 5 are combined to form the valve body. Since the valve seat block 3 and the U-shaped sealing ring 2 are formed separately, when one of them is damaged, only the damaged part can be replaced, thereby reducing the material cost.

[0037] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A low-cost split valve seat for a knife gate valve, comprising a valve body, characterized in that: The valve body is composed of a side valve body 1 (1) and a side valve body 2 (5). The side valve body 1 (1) is provided with a gate groove (4). The side valve body 1 (1) is provided with valve seat grooves (101) on both sides of the gate groove (4). The gate groove (4) is provided with U-shaped ring grooves (102) on both sides and the lower end. The upper ends of the two sides of the U-shaped ring groove (102) are respectively connected to the corresponding valve seat grooves (101). The valve seat grooves (101) are A valve seat block (3) is provided inside the valve seat block (3), and a through groove (303) matching the U-shaped ring groove (102) is provided on the valve seat block (3), and a U-shaped sealing ring (2) is provided inside the U-shaped ring groove (102), and the upper ends of both sides of the U-shaped sealing ring (2) are respectively fixed in the through groove (303), and the ends of the valve seat block (3) and the U-shaped sealing ring (2) away from the side valve body one (1) are both against the side valve body two (5).

2. A low-cost split valve seat for a knife gate valve according to claim 1, characterized in that: The cross section of the valve seat block (3) is L-shaped, and a protrusion part 1 (301) and a protrusion part 2 (302) are fixedly provided on one side of the valve seat block (3) close to the side valve body 1 (1), and the valve seat groove (101) matches the protrusion part 1 (301) and the protrusion part 2 (302).

3. A low-cost split valve seat for a knife gate valve according to claim 2, characterized in that: The through groove (303) and the U-shaped ring groove (102) are both connected to each other and are provided with a first card groove (7) on the side away from the side valve body (5); the first card groove (7) is connected to each other and is provided with a second card groove (8) on the side away from the through groove (303); the U-shaped sealing ring (2) matches the through groove (303) and the U-shaped ring groove (102); the U-shaped sealing ring (2) is fixedly provided with a sealing portion (201) at a position corresponding to the first card groove (7); the first sealing portion (201) is fixedly provided with a sealing portion (202) at a position corresponding to the second card groove (8) on the side away from the U-shaped sealing ring (2); the first sealing portion (201) and the second sealing portion (202) are respectively clamped in the corresponding first card groove (7) and the second card groove (8).

4. A low-cost split valve seat for a knife gate valve according to claim 3, characterized in that: A gate plate (6) is inserted into the gate plate groove (4), and two ends of the gate plate (6) are respectively abutted against the corresponding valve seat block (3) and the U-shaped sealing ring (2).

5. A low-cost split valve seat for a knife gate valve according to claim 4, characterized in that: An inner groove (103) is provided at the position of the inner upper end of the side valve body 1 (1) and the side valve body 2 (5) corresponding to the gate plate (6), and a sealing strip is embedded in the inner groove (103). The end of the sealing strip away from the inner groove (103) is in contact with the gate plate (6).

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