Valve for backwashing filter

Abstract

The utility model provides a valve for a backwash filter, which relates to the technical field of backwash filter valves, and comprises a valve body and a baffle plate in the valve body, two side edges of a swing edge of the baffle plate are rotatably connected with rotating blocks, the inner side wall of the valve body is provided with grooves which are in sliding connection with the rotating blocks, and the rotating blocks are arranged in the grooves through fine adjustment of the position of a sliding seat. The clamping blocks inserted into the sliding seats face the gap of the limiting chain, the clamping blocks ascend to be inserted into the limiting chain, then the limiting chain is prevented from moving, and the limiting chain wheel can be prevented from rotating; the first chain wheel on the end face of the guide chain wheel, the guide chain wheel connected with the first chain wheel, the connecting chain and the rotating block are prevented from moving, the position of the baffle is fixed, and the position of the baffle can be fixed after the connecting shaft rotates to any number of turns through fine adjustment of the position of the sliding seat.

Description

Technical Field

[0001] The utility model relates to the technical field of backwash filter valves, in particular to a valve used for backwash filters. Background Art

[0002] Backwash filter is a precision equipment that uses a filter to directly intercept impurities in the water, remove suspended solids and particulate matter in the water, reduce turbidity, purify water quality, reduce system dirt, algae, rust, etc., to purify water quality and protect the normal operation of other equipment in the system. When in use, the amount of water entering the backwash filter is controlled by a valve.

[0003] For example, a valve assembly for a backwash filter in the prior art has the publication number CN217328497U. Water flows into the valve body, and the rotating block drives the threaded rod to rotate. The movable plate installed on the threaded rod will follow the movement to cause the movable plate to move, pushing the pressure wheel to press down the baffle so that one end of the baffle rotates around the connecting block. The water flow rate is adjusted by the rotation angle of the baffle. A vertical plate is provided on one side of the rotating block. The vertical plate is fixedly connected to the valve body. A limit rod is slidably inserted on the vertical plate. A plurality of limit grooves corresponding to the limit rod are provided on the rotating block. A stop sleeve is fixedly sleeved on one end of the limit rod. The baffle can be restored by the rebound force of the first elastic mechanism. After adjusting to the appropriate flow rate, the limit rod on the sliding vertical plate is inserted into the limit groove on the rotating block to fix the position of the rotating block.

[0004] However, there are distributed gaps between the limit grooves on the rotating block. Therefore, in order to fix the position of the rotating block by inserting the limit rod into the limit groove, it is necessary to ensure that the limit rod is aligned with the position of one of the limit grooves when the rotating block rotates. Therefore, the number of screw turns is fixed, and the distance that the pressure wheel descends is fixed, that is, the swing angle of the baffle each time is fixed, so it is impossible to arbitrarily control the swing angle of the baffle. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes a valve for a backwashing filter.

[0006] The cam is an airtight container, the inner wall of the valve body being provided with a groove which is slidably connected to the rotating block, and the inner wall of the valve body is provided with a connecting chain which is fixedly connected to the rotating block, and a guide sprocket which is rotatably connected to the connecting chain is passed through one of the corner positions of the inner wall of the groove and is rotatably connected to the guide sprocket which is meshed with the connecting chain. The end face of the guide sprocket located outside the valve body is fixedly connected to the first sprocket. The outer wall of the valve body is rotatably connected to the first sprocket corresponding to the first sprocket, and one end of the connecting shaft is driven by the first sprocket. The outer wall of the valve body is provided with two limiting sprockets which are respectively fixedly connected to the connecting shaft and rotatably connected to the valve body, and the limiting chain is meshed between the two limiting sprockets. The outer wall of the valve body is slidably connected to a sliding seat, and a block for inserting with the limiting chain is inserted on the sliding seat.

[0007] Preferably, the other corners of the groove are rotatably connected to guide sprockets meshing with the connecting chain, and the sliding connection portion between the groove and the rotating block is an arc setting with the center of the circle coinciding with the rotation point of the baffle.

[0008] Preferably, one end of the connecting shaft is also fixedly connected to a first sprocket, and a first chain is meshingly connected between two of the first sprockets.

[0009] Preferably, a mounting seat which is rotatably connected to the connecting shaft and passes through is fixedly connected to the outer wall of the valve body, and the mounting seat is rotatably connected to the end face of the limiting sprocket on the connecting shaft.

[0010] Preferably, the mounting seat is plugged into the valve body, and an electric telescopic rod for driving the sliding seat to move is fixedly connected to the valve body.

[0011] Preferably, the top edge of the clamping block is provided with a columnar protrusion, and an electric push rod is fixedly connected between the clamping block and the slide seat.

[0012] Preferably, the other end surfaces of the two connecting shafts are arranged relative to each other, and a dual-shaft motor for driving the two connecting shafts to rotate is fixedly connected to the valve body.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, by fine-tuning the position of the slide, the block inserted on the slide is directed toward the gap of the limit chain, and the block rises to be inserted into the limit chain, thereby preventing the limit chain from moving, thereby preventing the limit sprocket from rotating, thereby preventing the connecting shaft and the first sprocket on its end face, the first chain, the first sprocket on the end face of the guide sprocket and the guide sprocket connected thereto, the connecting chain and the rotating block from moving, thereby achieving fixed position of the baffle. By fine-tuning the position of the slide, the position of the baffle can be fixed after the connecting shaft rotates to any number of turns.

[0015] 2. In the utility model, a plurality of guide sprockets are utilized to realize the smooth movement of the connecting chain in the groove, and one of the guide sprockets is rotated to drive the connecting chain to move, thereby realizing the connection rotating block fixed to the connecting chain to drive the baffle to rotate and swing, and the movement distance of the connecting chain is controlled by controlling the number of rotation circles of the guide sprocket, thereby controlling the swing amplitude of the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a valve for backwashing filter;

[0017] Figure 2 The utility model proposes a valve for backwashing filter Figure 1 A schematic cross-sectional structure diagram of ;

[0018] Figure 3 The utility model proposes a valve for backwashing filter Figure 2 A front view of

[0019] Figure 4 for Figure 1 Enlarged view of point A in the middle:

[0020] Figure 5 for Figure 2 Enlarged view of point B in the middle.

[0021] Legend: 1. Valve body; 2. Connecting shaft; 3. First sprocket; 4. Limiting sprocket; 5. Limiting chain; 6. Electric push rod; 7. Sliding seat; 8. Connecting chain; 9. Baffle; 10. Guide sprocket; 11. Groove; 12. Rotating block; 13. Block; 14. Electric telescopic rod; 15. Mounting seat; 16. First chain. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] like Figure 1-5As shown, a valve for backwashing filter comprises a valve body 1 and a baffle 9 in the valve body 1, the baffle 9 is used to control the water flow of the valve body 1, both sides of the swinging side of the baffle 9 are rotatably connected with a rotating block 12, the inner wall of the valve body 1 is provided with a groove 11 which is slidably connected with the rotating block 12, a connecting chain 8 which is fixedly connected with the rotating block 12 is arranged in the groove 11, one of the corner positions of the inner wall of the groove 11 is penetrated and rotatably connected with a guide sprocket 10 which is meshed with the connecting chain 8, the connecting chain 8 is driven to move by the rotation of the guide sprocket 10, and then the connecting rotating block 12 which is fixed with the connecting chain 8 drives the baffle 9 to rotate and swing, and the connecting chain is controlled by the number of rotations of the guide sprocket 10. The moving distance of the sprocket 8 is controlled, and then the swing amplitude of the baffle 9 is controlled. The end face of the guide sprocket 10 located outside the valve body 1 is fixedly connected with the first sprocket 3. The outer wall of the valve body 1 is connected with a connecting shaft 2 corresponding to the rotation of the first sprocket 3. One end of the connecting shaft 2 is transmitted with the first sprocket 3. The first sprocket 3 is driven to rotate by the rotation of the connecting shaft 2, and then the above-mentioned guide sprocket 10 connected with the first sprocket 3 is rotated. The specific method is: one end of the connecting shaft 2 is also fixedly connected with the first sprocket 3, and the two first sprockets 3 are meshed and connected with a first chain 16. The transmission effect of the first chain 16 is utilized to realize that when the first sprocket 3 on the end face of the connecting shaft 2 rotates, the first sprocket 3 on the end face of the guide sprocket 10 is driven to rotate, and the valve body 1 The outer wall is provided with two limit sprockets 4 which are respectively fixedly connected to the connecting shaft 2 and rotatably connected to the valve body 1. A limit chain 5 is meshed between the two limit sprockets 4. When the connecting shaft 2 rotates, the limit sprocket 4 on its surface will be driven to rotate synchronously, and the function of the other limit sprocket 4 is to fix the position of the limit chain 5, so that the limit chain 5 remains in the state shown in the figure and rotates with the rotation of the limit sprocket 4 on the connecting shaft 2. In order to fix the rotation amplitude of the baffle 9: the outer wall of the valve body 1 is slidably connected with a slide seat 7, and the slide seat 7 is plugged with a block 13 for plugging with the limit chain 5, the mounting seat 15 is plugged on the valve body 1, and the valve body 1 is fixedly connected with a block for driving the slide seat 7 to move The electric telescopic rod 14, the top edge of the block 13 is set in a columnar protrusion, and an electric push rod 6 is fixedly connected between the block 13 and the slide 7. The position of the slide 7 is fine-tuned by retracting the electric push rod 6, so that the block 13 inserted on the slide 7 is facing the gap of the limit chain 5. Therefore, by extending the electric telescopic rod 14, the block 13 can be raised to be inserted into the limit chain 5, thereby preventing the limit chain 5 from moving, thereby preventing the limit sprocket 4 from rotating, and thereby preventing the first sprocket 3 on the connecting shaft 2 and its end face, the first chain 16, the first sprocket 3 on the end face of the guide sprocket 10 and the guide sprocket 10 connected thereto, the connecting chain 8 and the rotating block 12 from moving, thereby achieving the fixed position of the baffle 9.

[0025] In order to prevent the connecting chain 8 from contacting and wearing the inner wall of the groove 11 and to pass smoothly through the corners of the groove 11: the other corners of the groove 11 are rotatably connected with the guide sprocket 10 meshing with the connecting chain 8, and the sliding connection part between the groove 11 and the rotating block 12 is an arc setting with the center of the circle coinciding with the rotation point of the baffle 9.

[0026] In order to limit the connecting shaft 2 and ensure the stable position of the limiting sprocket 4 on the connecting shaft 2: the outer wall of the valve body 1 is fixedly connected with a mounting seat 15 that is rotatably connected to the connecting shaft 2, and the mounting seat 15 is rotatably connected to the end face of the limiting sprocket 4 on the connecting shaft 2.

[0027] In order to drive the two connecting shafts 2 to rotate: the other end faces of the two connecting shafts 2 are relatively distributed, and a dual-axis motor for driving the two connecting shafts 2 to rotate is fixedly connected to the valve body 1, and the dual-axis motor used in this scheme is any model of dual-axis motor commonly used on the market, which is an existing product, so it will not be described in detail.

[0028] In use, the double-axis motor on the valve body 1 drives the two connecting shafts 2 to rotate, and the force of the connecting shaft 2 rotating is transmitted to realize the rotation of the first sprocket 3 on its end face, the movement of the first chain 16, the rotation of the first sprocket 3 on the end face of the guide sprocket 10 and the rotation of the guide sprocket 10 connected thereto, and the movement of the connecting chain 8, and finally the sliding of the rotating block 12 in the arc part of the groove 11, thereby realizing the swing of the baffle 9 and the amplitude adjustment. After adjusting to the corresponding angle, the sliding seat 7 is realized by the extension and retraction of the electric push rod 6. The position is finely adjusted so that the block 13 inserted on the slide 7 faces the gap of the limiting chain 5. Therefore, the electric telescopic rod 14 is extended to realize that the block 13 rises to be inserted into the limiting chain 5, thereby preventing the limiting chain 5 from moving, thereby preventing the limiting sprocket 4 from rotating, and thereby preventing the connecting shaft 2 and the first sprocket 3 on its end face, the first chain 16, the first sprocket 3 on the end face of the guide sprocket 10 and the guide sprocket 10 connected thereto, the connecting chain 8 and the rotating block 12 from moving, thereby realizing the fixing of the position of the baffle 9.

[0029] The wiring diagram of the electric push rod 6 and the electric telescopic rod 14 in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the electric push rod 6 and the electric telescopic rod 14 are not explained in detail.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A valve for backwashing a filter, comprising a valve body (1) and a baffle (9) in the valve body (1), characterized in that: Both sides of the swinging side of the baffle (9) are rotatably connected to a rotating block (12); the inner wall of the valve body (1) is provided with a groove (11) slidably connected to the rotating block (12); a connecting chain (8) fixedly connected to the rotating block (12) is arranged in the groove (11); a guide sprocket (10) meshingly connected to the connecting chain (8) is rotatably connected through one of the corner positions of the inner wall of the groove (11); the end surface of the guide sprocket (10) located outside the valve body (1) is fixedly connected to the first sprocket (3) The outer wall of the valve body (1) is rotatably connected to a connecting shaft (2) corresponding to the first sprocket (3), one end of the connecting shaft (2) is driven by the first sprocket (3), the outer wall of the valve body (1) is provided with two limit sprockets (4) which are respectively fixedly connected to the connecting shaft (2) and rotatably connected to the valve body (1), a limit chain (5) is meshed between the two limit sprockets (4), the outer wall of the valve body (1) is slidably connected to a slide seat (7), and a clamping block (13) for being plugged into the limit chain (5) is plugged onto the slide seat (7).

2. The valve for backwashing filter according to claim 1, characterized in that: The other corners of the groove (11) are rotatably connected to a guide sprocket (10) meshing with the connecting chain (8), and the sliding connection portion between the groove (11) and the rotating block (12) is an arc-shaped arrangement whose center coincides with the rotating point of the baffle (9).

3. The valve for backwashing filter according to claim 1, characterized in that: One end of the connecting shaft (2) is also fixedly connected to a first sprocket (3), and a first chain (16) is meshingly connected between the two first sprockets (3).

4. The valve for backwashing filter according to claim 1, characterized in that: The outer wall of the valve body (1) is fixedly connected with a mounting seat (15) which penetrates and is rotatably connected to the connecting shaft (2), and the mounting seat (15) is rotatably connected to the end surface of the limiting sprocket (4) on the connecting shaft (2).

5. The valve for backwashing filter according to claim 4, characterized in that: The mounting seat (15) is plugged into the valve body (1), and an electric telescopic rod (14) for driving the sliding seat (7) to move is fixedly connected to the valve body (1).

6. The valve for backwashing filter according to claim 1, characterized in that: The top edge of the clamping block (13) is provided with a columnar protrusion, and an electric push rod (6) is fixedly connected between the clamping block (13) and the sliding seat (7).

7. The valve for backwashing filter according to claim 1, characterized in that: The other end surfaces of the two connecting shafts (2) are arranged opposite to each other, and a double-shaft motor for driving the two connecting shafts (2) to rotate is fixedly connected to the valve body (1).

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