A drainage gate valve

Abstract

This patent discloses a drainage gate valve, including a valve seat embedded part, a valve seat, a sealing rubber sheet, a rubber stripping plate and a gate; the valve seat includes a first frame and a second frame, and the second frame is sealed and fixedly connected to the valve seat embedded part; the front side of the first frame is provided with a first frame-shaped groove matched with the sealing rubber sheet; the front side of the sealing rubber sheet is provided with a second frame-shaped groove matched with the rubber stripping plate, and the rubber stripping plate, the sealing rubber sheet and the valve seat are fixedly connected in sequence by a plurality of first locking bolts; the left and right sides of the front side of the first frame are respectively fixedly connected with L-shaped guide plates, and the gate is located in the gap formed by the L-shaped guide plate and the sealing rubber sheet; a driving device is provided on the upper part of the gate. Through this patent, a physical barrier is achieved between the gate and the structure, ensuring that even if the wall of the structure is deformed and bulged, it will not affect the sealing performance of the drainage gate valve.

Description

Technical Field

[0001] This patent relates to the field of gate valves, and specifically to a drainage gate valve. Background Art

[0002] The gate valve is one of the most commonly used shut-off valves, mainly used to connect or cut off the medium in the pipeline. During the use of the sand filter tank in the water plant, it was found that the drainage gate valve on the water inlet pipe / drain pipe of the sand filter tank was leaking. After inspection and maintenance, it was found that the leakage was caused by the breakage of the rubber strip. The fundamental reason is that the valve seat of the existing drainage gate valve is set in the water inlet pipe / outlet pipe of the sand filter tank, and is sealed and connected to the pool wall of the water inlet pipe / outlet pipe. The gate is set in the valve seat and moves up and down. The pool wall of the sand filter tank is deformed over time due to cement expansion, cold shrinkage and thermal expansion, which causes the valve seat closely connected to it to deform accordingly, causing the distance between the gate and the valve seat to change, such as shrinking. The rubber strips on the two sealing surfaces where the gate and the valve seat are in contact during opening and closing are easily scratched under relative sliding, resulting in wear and even breakage, thereby destroying the sealing performance, causing leakage, and affecting the service life.

[0003] Therefore, it is urgent to improve the structure of the drainage gate valve to solve the problem of water leakage of the drainage gate valve caused by deformation and bulging of the wall of the structure.

[0004] Patent content

[0005] The purpose of this patent is to design a drainage gate valve that can achieve a physical barrier between the gate and the structure, ensuring that even if the wall of the structure deforms and bulges, it will not affect the sealing performance of the drainage gate valve.

[0006] To achieve the above purpose, this patent provides the following technical solutions:

[0007] A drainage gate valve, comprising a valve seat embedded part, a valve seat, a sealing rubber sheet, a rubber pressure strip plate and a gate plate; the valve seat embedded part, the valve seat and the sealing rubber sheet are all frame structures, and the three are aligned; the valve seat embedded part is sealed and fixedly connected to the pipe body of the water inlet pipe or the water outlet pipe of the structure, and the end of the valve seat embedded part connected to the valve seat is flush with the pipe mouth of the pipe body or extends out of the outside of the pipe mouth; the valve seat comprises a first frame body and a second frame body, and the second frame body is sealed and fixedly connected to the valve seat embedded part; the front side of the first frame body is provided with a first frame-shaped groove matched with the sealing rubber sheet, and the sealing rubber The rubber sheet is located in the first frame-shaped groove; a second frame-shaped groove matching with the rubber pressure strip plate is provided on the front side of the sealing rubber sheet, the rubber pressure strip plate is located in the second frame-shaped groove, the rubber pressure strip plate, the sealing rubber sheet and the valve seat are fixedly connected in sequence by a plurality of first locking bolts; L-shaped guide plates are fixedly connected to the left and right sides of the front side of the first frame body respectively, and the gate plate is located in the gap formed by the L-shaped guide plate and the sealing rubber sheet; a driving device is provided above the gate plate, the driving device is arranged on the outside, and the gate plate can be driven by the driving device to move up and down in the gap.

[0008] Furthermore, the L-shaped guide plate includes an inner guide plate and an outer guide plate, the width of the outer guide plate is greater than the width of the inner guide plate; the outer guide plate, the inner guide plate and the valve seat are fixedly connected in sequence by a plurality of second locking bolts. In such a configuration, it is difficult to form the L-shaped structure using a CNC machining bed. Therefore, the L-shaped guide plate is split into a rectangular inner guide plate and an outer guide plate, thereby reducing the difficulty of processing.

[0009] Furthermore, the outer guide plate is provided with a plurality of longitudinally arranged embedded clamping wheels, which are rotatably connected to the outer guide plate; the front side of the gate plate is fixed with a plurality of wedge blocks of conical structure, and the clamping wheels cooperate with the wedge blocks. With such arrangement, as the gate plate moves downward, the clamping wheels will roll along the conical inclined surface of the wedge blocks, and when the gate plate moves to the closed position of the water gate, the clamping wheels just move to the highest point of the conical surface of the wedge blocks, and at this time, the wedge blocks can make the gate plate more closely attached to the sealing rubber sheet, thereby further improving the sealing performance.

[0010] Furthermore, a plurality of longitudinally arranged first guide wheels are provided on the left and right sides of the front side of the gate plate, and the first guide wheels are connected to the gate plate through a first connecting seat; the first guide wheels are in contact and rolling connection with the front surface of the outer guide plate. In this arrangement, the first guide wheels cooperate with the outer guide plates on the left and right sides, thereby improving the smoothness of the gate plate's up and down movement between the outer guide plate and the sealing rubber sheet.

[0011] Furthermore, the left and right sides of the front side of the gate are respectively provided with second guide wheels arranged transversely, the second guide wheels are connected to the gate via a second connecting seat, and the second guide wheels are in contact and rolling connection with the inner edge of the outer guide plate. In this arrangement, the second guide wheels cooperate with the left and right outer guide plates to ensure that the gate moves vertically up and down, thereby preventing the gate from shaking left and right and damaging the valve seat, thereby affecting the product life.

[0012] Furthermore, the driving rod of the driving device is connected to the gate plate through a lifting ear, and the lifting ear is connected to the gate plate through a pin, and the gate plate rotates relative to the lifting ear with the pin as the center. Such an arrangement is different from the existing fixed connection between the gate plate and the driving rod. The gate plate of the present application is rotatably connected to the driving rod through the lifting ear. In this way, it can be ensured that even if the gate plate tilts due to the restriction of the valve seat to move up and down, resulting in the center of gravity of the gate plate and the coaxiality of the driving device deviating, the driving rod can continue to maintain a vertical state and will not tilt, thereby avoiding damage to the driving device and affecting the product life.

[0013] Furthermore, the driving rod is threadedly connected to the lifting ear. With such arrangement, the length of the driving rod can be adjusted by the depth of the driving rod being screwed into the lifting ear to adapt to the use requirements of the actual environment.

[0014] Furthermore, the driving device is a cylinder or a hydraulic cylinder. With such an arrangement, the cylinder or the hydraulic cylinder is used to realize the up and down reciprocating motion, and a speed reduction device can be omitted, and the motion is stable.

[0015] Furthermore, the rubber stripping plate is divided into four sections, which correspond to the upper, lower, left and right sides of the front side of the sealing rubber sheet. In this way, the rubber stripping plate is divided into four sections for processing, which greatly reduces the difficulty of processing the rubber stripping plate. At the same time, the four sections of the rubber stripping plate are used to fix the upper, lower, left and right sides of the sealing rubber sheet respectively, which can also reduce the difficulty of fixing the sealing rubber sheet.

[0016] Furthermore, expansion cement is provided between the valve seat embedded part and the tube body, and between the valve seat embedded part and the second frame body. In this arrangement, the expansion cement is used to generate volume expansion during the hardening process, thereby improving the pore structure of the concrete under constraint conditions, reducing the total porosity and the capillary pore diameter, thereby improving the compactness and impermeability of the concrete. In addition, the sealing performance between the valve seat embedded part and the tube body, and between the valve seat embedded part and the second frame body is improved to avoid water leakage.

[0017] Compared with the prior art, the beneficial effects of this patent are:

[0018] Since the gate is set outside the pipe body of the water inlet / outlet pipe of the structure, there is no direct contact between the gate and the structure, so there is a physical barrier between the gate and the structure. In this way, even if the wall of the structure is deformed and bulged, the distance between the gate and the valve seat will not change, avoiding wear on the sealing rubber sheet when the gate moves up and down, thereby ensuring the sealing performance of the drainage gate valve.

[0019] In addition, the sealing rubber sheet is made of integral material and is fixed to the valve seat with a rubber pressure strip plate through the first locking bolt. The sealing rubber strip will not move with the gate plate during the up and down switching of the gate plate, thus avoiding damage to the sealing rubber sheet due to external pulling force caused by movement, thereby further ensuring the sealing performance of the drainage gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of this patent or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this patent. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is the explosion diagram of this patent;

[0022] Figure 2 It is a schematic diagram of the overall structure of this patent;

[0023] Figure 3 This patent is attached Figure 2 A magnified image of point A;

[0024] Figure 4 This is the main view of this patent;

[0025] Figure 5 This is one of the structural diagrams of this patent;

[0026] Figure 6 This is the second structural diagram of this patent;

[0027] The names of the components marked in the figure are as follows:

[0028] 1. Structure; 101. Pipe body; 2. Valve seat embedded part; 3. Valve seat; 4. First frame; 401. First frame groove; 5. Second frame; 6. Sealing rubber sheet; 601. Second frame groove; 7. Rubber pressure strip plate; 8. First locking bolt; 9. L-shaped guide plate; 10. Inner guide plate; 11. Outer guide plate; 1101. Clamping wheel; 12. Gate; 1201. Wedge block; 1202. First guide wheel; 1203. First connecting seat; 1204. Second guide wheel; 1205. Second connecting seat; 13. Driving device; 1301. Driving rod; 14. Lifting ear; 1401. Pin; 15. Second locking bolt. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in this patent to clearly and completely describe the technical solution in this patent. Obviously, what is described is only a part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0030] Example:

[0031] A drainage gate valve, comprising a valve seat embedded part 2, a valve seat 3, a sealing rubber sheet 6, a rubber pressure strip plate 7 and a gate plate 12; the valve seat embedded part 2, the valve seat 3 and the sealing rubber sheet 6 are all frame structures, and the three are aligned; the valve seat embedded part 2 is sealed and fixedly connected to the pipe body 101 of the water inlet pipe or the water outlet pipe of the structure 1, and the end of the valve seat embedded part 2 connected to the valve seat 3 is flush with the pipe mouth of the pipe body 101 or extends out of the outside of the pipe mouth; the valve seat 3 comprises a first frame body 4 and a second frame body 5, and the second frame body 5 is sealed and fixedly connected to the valve seat embedded part 2; the front side of the first frame body 4 is provided with a first frame-shaped groove 401 that matches the sealing rubber sheet 6, and the first frame body 4 is sealed. The sealing rubber sheet 6 is located in the first frame-shaped groove 401; a second frame-shaped groove 601 matching with the rubber pressure strip plate 7 is provided on the front side of the sealing rubber sheet 6, the rubber pressure strip plate 7 is located in the second frame-shaped groove 601, the rubber pressure strip plate 7, the sealing rubber sheet 6 and the valve seat 3 are fixedly connected in sequence by a plurality of first locking bolts 8; L-shaped guide plates 9 are fixedly connected to the left and right sides of the front side of the first frame body 4, respectively, and the gate plate 12 is located in the gap formed by the L-shaped guide plate 9 and the sealing rubber sheet 6; a driving device 13 is provided above the gate plate 12, and the driving device 13 is arranged on the outside, and the gate plate 12 can be driven by the driving device 13 to move up and down in the gap.

[0032] The L-shaped guide plate 9 includes an inner guide plate 10 and an outer guide plate 11. The width of the outer guide plate 11 is greater than that of the inner guide plate 10. The outer guide plate 11, the inner guide plate 10 and the valve seat 3 are fixedly connected in sequence by a plurality of second locking bolts 15. In this arrangement, it is difficult to form the L-shaped structure using a CNC machining bed. Therefore, the L-shaped guide plate 9 is split into a rectangular inner guide plate 10 and an outer guide plate 11, thereby reducing the difficulty of processing.

[0033] A plurality of longitudinally arranged embedded clamping wheels 1101 are provided in the outer guide plate 11, and the clamping wheels 1101 are rotatably connected to the outer guide plate 11; a plurality of wedge blocks 1201 with a conical structure are fixedly provided on the front side of the gate plate 12, and the clamping wheels 1101 cooperate with the wedge blocks 1201. With such a configuration, as the gate plate 12 moves downward, the clamping wheels 1101 will roll along the conical inclined surface of the wedge blocks 1201. When the gate plate 12 moves to the closed position of the water gate, the clamping wheels 1101 just move to the highest point of the conical surface of the wedge blocks 1201. At this time, the wedge blocks 1201 can make the gate plate 12 more closely attached to the sealing rubber sheet 6, thereby further improving the sealing performance.

[0034] A plurality of longitudinally arranged first guide wheels 1202 are provided on the left and right sides of the front side of the gate plate 12, and the first guide wheels 1202 are connected to the gate plate 12 through the first connecting seat 1203; the first guide wheels 1202 are in contact and rolling connection with the front surface of the outer guide plate 11. In this arrangement, the first guide wheels 1202 cooperate with the outer guide plates 11 on the left and right sides, thereby improving the smoothness of the up and down movement of the gate plate 12 between the outer guide plate 11 and the sealing rubber sheet 6.

[0035] The left and right sides of the front side of the gate plate 12 are respectively provided with second guide wheels 1204 arranged transversely, and the second guide wheels 1204 are connected to the gate plate 12 through the second connecting seat 1205, and the second guide wheels 1204 are in contact and rolling connection with the inner edge of the outer guide plate 11. In this arrangement, the second guide wheels 1204 cooperate with the outer guide plates 11 on the left and right sides to ensure that the gate plate 12 moves vertically up and down, and prevent the gate plate 12 from shaking left and right and damaging the valve seat 3, thereby affecting the product life.

[0036] The driving rod 1301 of the driving device 13 is connected to the gate plate 12 through the lifting ear 14, and the lifting ear 14 is connected to the gate plate 12 through the pin 1401. The gate plate 12 rotates relative to the lifting ear 14 with the pin 1401 as the center. Such a configuration is different from the existing fixed connection between the gate plate 12 and the driving rod 1301. The gate plate 12 of the present application is rotatably connected to the driving rod 1301 through the lifting ear 14. In this way, it can be ensured that even if the gate plate 12 tilts due to the restriction of the valve seat 3 to move up and down, resulting in the center of gravity of the gate plate 12 and the coaxiality of the driving device 13 deviating, the driving rod 1301 can continue to maintain a vertical state and will not tilt, thereby avoiding damage to the driving device 13 and affecting the product life.

[0037] The driving rod 1301 is threadedly connected to the lifting ear 14. With such arrangement, the length of the driving rod 1301 can be adjusted by the depth of the driving rod 1301 being screwed into the lifting ear 14 to adapt to the use requirements of the actual environment.

[0038] The driving device 13 is a cylinder or a hydraulic cylinder. By so arranging, the cylinder or the hydraulic cylinder is utilized to realize the up and down reciprocating motion, and a speed reducing device can be eliminated, and the motion is stable.

[0039] The rubber stripping plate 7 is divided into four sections, which correspond to the upper, lower, left, and right sides of the front side of the sealing rubber sheet 6. In this way, the rubber stripping plate 7 is divided into four sections for processing, which greatly reduces the difficulty of processing the rubber stripping plate 7. At the same time, the four sections of the rubber stripping plate 7 are used to fix the upper, lower, left, and right sides of the sealing rubber sheet 6, respectively, which can also reduce the difficulty of fixing the sealing rubber sheet 6.

[0040] Expansive cement is provided between the valve seat embedded part 2 and the pipe body 101, and between the valve seat embedded part 2 and the second frame 5. In this way, the volume expansion of the expansive cement during the hardening process is utilized to improve the pore structure of the concrete under the constraint condition, reduce the total porosity, and reduce the capillary pore diameter, thereby improving the compactness and impermeability of the concrete. In addition, the sealing performance between the valve seat embedded part 2 and the pipe body 101, and between the valve seat embedded part 2 and the second frame 5 is improved to avoid water leakage.

[0041] The working principle of this embodiment:

[0042] Step 1: Install the valve seat embedded part 2: Place the valve seat embedded part 2 in the pipe body 101 of the water inlet / outlet pipe of the structure 1, and the end of the valve seat embedded part 2 connected to the valve seat 3 is flush with the pipe mouth of the pipe body 101 or extends to the outside of the pipe mouth; after placement, weld the valve seat embedded part 2 to the steel bars in the structure 1 by electric welding, and then fill and seal with expansion cement;

[0043] Step 2: Install the valve seat 3: Place the second frame 5 of the valve seat 3 into the valve seat embedded part 2, weld it with a welding block, and then fill and seal it with expansion cement;

[0044] Step 3: Install the sealing rubber sheet 6: place the frame-shaped sealing rubber sheet 6 in the first frame-shaped groove 401 of the first frame body 4 of the valve seat 3, and then place the rubber stripping plate 7 in the second frame-shaped groove 601 of the sealing rubber sheet 6, and use the first locking bolt 8 to pass through the rubber stripping plate 7 and the sealing rubber sheet 6 in sequence to fix the rubber stripping plate 7 and the sealing rubber sheet 6 on the valve seat 3; because the rubber stripping plate 7 is placed in the second frame-shaped groove 601 of the sealing rubber sheet 6, the rubber stripping plate 7 will not affect the sealing and water-blocking performance between the sealing rubber sheet 6 and the gate plate 12 after being fixed;

[0045] Step 4: Install the L-shaped guide plate 9: Place the L-shaped guide plate 9 on the left and right sides of the front side of the valve seat 3. Specifically, use the second locking screw to pass through the outer guide plate 11 and the inner guide plate 10 in sequence to fix the outer guide plate 11 and the inner guide plate 10 on the valve seat 3; since the width of the outer guide plate 11 is greater than the width of the inner guide plate 10, after installation, a gap for the gate plate 12 to move up and down is formed between the outer guide plate 11 and the sealing rubber sheet 6;

[0046] Step 5: Install the gate plate 12: Place the gate plate 12 in the gap, connect the top of the gate plate 12 to the driving device 13, and the gate plate 12 moves up and down in the gap through the driving device 13. Thus, the water passing / cutting function of the drainage gate plate 12 valve is realized.

[0047] Since the gate plate 12 is arranged outside the pipe body 101 of the water inlet / outlet pipe of the structure 1, there is no direct contact between the gate plate 12 and the structure 1, so that there is a physical barrier between the gate plate 12 and the structure 1. In this way, even if the wall of the structure 1 is deformed and bulged, the distance between the gate plate 12 and the valve seat 3 will not change, and the gate plate 12 is prevented from wearing the sealing rubber sheet 6 when moving up and down, thereby ensuring the sealing performance of the drainage gate plate 12 valve.

[0048] In addition, the sealing rubber sheet 6 is made of an integral material, and there is no leakage. The rubber pressure strip plate 7 is fixed to the valve seat 3 through the first locking bolt 8. During the up and down opening and closing of the gate plate 12, the sealing rubber strip will not move with the gate plate 12, so as to avoid the sealing rubber sheet 6 from being damaged by the external force of movement, and further ensure the sealing performance of the drainage gate plate 12 valve.

Claims

1. A drainage gate valve, characterized in that: The valve seat comprises a valve seat embedded part, a valve seat, a sealing rubber sheet, a rubber pressure strip plate and a gate plate; the valve seat embedded part, the valve seat and the sealing rubber sheet are all frame structures, and the three are aligned; the valve seat embedded part is sealed and fixedly connected to the pipe body of the water inlet pipe or the water outlet pipe of the structure, and the end of the valve seat embedded part connected to the valve seat is flush with the pipe mouth of the pipe body or extends out of the outside of the pipe mouth; the valve seat comprises a first frame body and a second frame body, and the second frame body is sealed and fixedly connected to the valve seat embedded part; the front side of the first frame body is fixedly connected to the valve seat embedded part; A first frame-shaped groove is provided to match the sealing rubber sheet, and the sealing rubber sheet is located in the first frame-shaped groove; a second frame-shaped groove is provided on the front side of the sealing rubber sheet to match the rubber stripping plate, and the rubber stripping plate is located in the second frame-shaped groove, and the rubber stripping plate, the sealing rubber sheet and the valve seat are fixedly connected in sequence by a plurality of first locking bolts; L-shaped guide plates are fixedly connected to the left and right sides of the front side of the first frame body, respectively, and the gate plate is located in the L-shaped guide plate and the sealing rubber sheet. a drive device is provided above the gate plate, the drive device is arranged on the outside, the gate plate can be driven by the drive device and moves up and down in the gap; the L-shaped guide plate includes an inner guide plate and an outer guide plate, the width of the outer guide plate is greater than the width of the inner guide plate; the outer guide plate, the inner guide plate and the valve seat are fixedly connected in sequence by a plurality of second locking bolts; a plurality of longitudinally arranged embedded clamping wheels are provided in the outer guide plate, and the clamping wheels are rotatably connected with the outer guide plate; a plurality of wedges of conical structure are fixedly provided on the left and right sides of the front side of the gate plate, and the clamping wheels cooperate with the wedges; a plurality of longitudinally arranged first guide wheels are provided on the left and right sides of the front side of the gate plate, and the first guide wheels are connected to the gate plate through a first connecting seat; the first guide wheels are in contact with the front surface of the outer guide plate and are in rolling connection; a second guide wheel is provided on the left and right sides of the front side of the gate plate, respectively, and the second guide wheel is connected to the gate plate through a second connecting seat, and the second guide wheel is in contact with the inner edge of the outer guide plate and is in rolling connection.

2. The drain gate valve according to claim 1, characterized in that: The driving rod of the driving device is connected to the gate plate through a lifting lug, the lifting lug and the gate plate are connected through a pin, and the gate plate rotates relative to the lifting lug with the pin as the center.

3. The drain gate valve according to claim 2, characterized in that: The driving rod is threadedly connected to the lifting ear.

4. The drainage gate valve according to claim 1, characterized in that: The driving device is a pneumatic cylinder or a hydraulic cylinder.

5. The drainage gate valve according to claim 1, characterized in that: The rubber pressure strip plate is divided into four sections, which respectively correspond to the upper, lower, left and right four sections of the front side surface of the sealing rubber sheet.

6. The drainage gate valve according to claim 1, characterized in that: Expansion cement is provided between the valve seat embedded part and the pipe body, and between the valve seat embedded part and the second frame body.

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