Adjustable automatic rotating weir gate of air floatation tank

Abstract

The utility model discloses an adjustable automatic rotating weir gate of an air floatation tank, which comprises a mounting frame, a side plate mounted at one end of the mounting frame, a weir gate main body movably connected to the inner side of the mounting frame, a push plate mounted at the bottom end of a hydraulic rod, a top plate mounted at the top end of a lifting mechanism, and supports mounted on two sides of the top plate. A sealing structure is mounted on the outer side of the weir gate main body. The hydraulic cylinder is installed at the top end of the top plate, the hydraulic cylinder works to drive the hydraulic rod to stretch out and draw back, the hydraulic rod stretches out and draws back to drive the push plate to ascend and descend, the installation screws and the push plate are in threaded connection, the push plate fixes the installation frame through the installation screws, and the push plate ascends and descends to adjust the height of the weir gate. The check gate can adapt to different conditions, the guide rod can stretch out and draw back, the check gate can be guided through stretching out and drawing back of the guide rod, the situation that the check gate deviates is prevented, and therefore the purpose that the height of the adjustable automatic rotating check gate of the air floatation tank is convenient to adjust is achieved.

Description

Technical Field

[0001] This utility model relates to the field of flotation tank weir gate technology, and in particular to an adjustable automatic rotating weir gate for flotation tanks. Background Technology

[0002] A dissolved air flotation (DAF) tank is a type of tank that primarily uses a large number of microbubbles to capture and adsorb fine particles and adhesives, causing them to float and achieving solid-liquid separation. A weir is defined as a gate installed at the weir opening to adjust the weir height; types include cast iron weirs, steel direct-acting weirs, and steel rotary weirs. Gates are control facilities used to close and open discharge channels. They are an important component of hydraulic structures, used to intercept water flow, control water levels, regulate flow, and discharge silt and floating debris. When adjusting the water in a DAF tank, an adjustable automatic rotary weir is required.

[0003] To this end, China has applied for patent number CN216275538U, which discloses an adjustable weir gate, belonging to the field of hydraulic equipment. The adjustable weir gate includes a riverbed, with stainless steel plates fixedly connected to both ends of the riverbed. Each of the two stainless steel plates has a hinge device on its lower side at the end where they are close to each other. The hinge device includes a crank arm. A crank arm is fixedly installed on the lower side of the two stainless steel plates where they are close to each other. One end of the crank arm has a locking hole and a locking shaft. A bottom shaft is fixedly installed on the side where the two crank arms are close to each other. The upper end of the bottom shaft is rotatably connected to the weir gate body, and the outer end of the bottom shaft is rotatably connected to a bearing. The upper end of the bearing is fixedly connected to the weir gate body. When the water level rises to a certain value, the water pressure causes the weir gate body to open at a certain angle to allow water to flow through. When the water level drops, the crank arm pulls the weir gate body back to its original position. The overall design uses the water level to control the opening and closing angle of the weir gate body to achieve the effect of controlling the water level and regulating the water flow.

[0004] While the adjustable automatic rotating weir gates of modern dissolved air flotation tanks can generally meet people's needs, some problems still exist, as detailed below:

[0005] 1. The adjustable automatic rotating weir gate of the flotation tank has the problem of difficulty in adjusting the height of the weir gate. The weir gate height is difficult to adjust, and the weir gate cannot adapt to different situations. The weir gate cannot adapt to flotation tanks of different heights.

[0006] 2. The adjustable automatic rotating weir gate of the flotation tank has the problem of insufficient sealing. When in use, the sealing of the weir gate is not strong enough, and water leakage may occur. Utility Model Content

[0007] The purpose of this invention is to provide an adjustable automatic rotating weir gate for flotation tanks, in order to solve the defects of existing adjustable automatic rotating weir gates for flotation tanks, which are difficult to adjust the height of the weir gate and difficult to enhance the sealing performance of the weir gate.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an adjustable automatic rotating weir gate for an air flotation tank, including a mounting frame;

[0009] A side plate is installed at one end of the mounting frame, and a weir gate body is movably connected to the inner side of the mounting frame. A rotating shaft is installed at the bottom end of the weir gate body, and a servo motor is installed on one side of the rotating shaft.

[0010] The top of the mounting frame is equipped with a lifting mechanism, which includes a hydraulic cylinder, a hydraulic rod, a push plate, mounting screws and a guide rod. The hydraulic cylinder is installed at the middle position of the top of the top plate.

[0011] A hydraulic rod is installed at the bottom of the hydraulic cylinder, a push plate is installed at the bottom of the hydraulic rod, and a mounting screw is movably connected to the top of the push plate. A top plate is installed at the top of the lifting mechanism, and brackets are installed on both sides of the top plate. A sealing structure is installed on the outer side of the weir gate body.

[0012] In use, the servo motor first drives the rotating shaft to rotate, which in turn drives the main body of the weir gate to rotate. The rotation of the main body of the weir gate controls its opening and closing. When the main body of the weir gate rotates, the guide block on the main body of the weir gate can slide along the guide groove on the side plate. The sliding block on the guide block and the sliding groove on the outside of the guide groove form a sliding structure. The guide block and the guide groove work together to guide the rotation of the main body of the weir gate.

[0013] Furthermore, the sealing structure includes a first sealing ring, a second sealing ring, and a connecting layer. The connecting layer is installed on the outside of the weir gate body, and the second sealing ring is installed on the outside of the connecting layer. The second sealing ring is installed inside the mounting frame. The second sealing ring can be installed through the connecting layer, and the first sealing ring can be installed inside the mounting frame. The second sealing ring and the first sealing ring can be made of rubber material.

[0014] Furthermore, the inner diameter of the second sealing ring is larger than that of the first sealing ring. The second sealing ring and the first sealing ring form an interlocking structure. The first sealing ring and the second sealing ring cooperate with each other, which can enhance the sealing between the weir gate body and the mounting frame.

[0015] Furthermore, the side plate is provided with a guide structure inside. The guide structure includes a guide groove, a guide block, a sliding groove, and a sliding block. The guide groove is provided on one side of the side plate, and a sliding groove is provided on the outer side of the guide groove. The guide block is provided on both sides of the weir gate body, and a sliding block is provided on the outer side of the guide block. The guide block and the guide groove can guide the weir gate body.

[0016] Furthermore, the outer diameter of the sliding block is smaller than the inner diameter of the sliding groove, and the sliding block and the sliding groove constitute a sliding structure, allowing the guide block to slide along the guide groove.

[0017] Furthermore, the guide rods are installed on both sides of the bottom end of the top plate, and the guide rods are symmetrically distributed about the central axis of the top plate, so that the guide rods can guide the weir gate.

[0018] Furthermore, the outer sidewall of the mounting screw is uniformly provided with external threads, and the inner sidewall of the push plate is uniformly provided with internal threads that cooperate with the external threads. The mounting screw and the push plate are threadedly connected, and the push plate can be installed by the mounting screw.

[0019] The adjustable automatic rotating weir gate for the flotation tank provided by this utility model has the following advantages: a hydraulic cylinder is installed at the top of the top plate. The operation of the hydraulic cylinder drives the hydraulic rod to extend and retract, which in turn drives the push plate to rise and fall. The mounting screw and the push plate form a threaded connection. The push plate is fixed to the mounting frame by the mounting screw. The rise and fall of the push plate can adjust the height of the weir gate, allowing the weir gate to adapt to different situations. The guide rod can extend and retract, which can guide the weir gate and prevent the weir gate from deviating. In this way, the adjustable automatic rotating weir gate of the flotation tank can be easily adjusted to adjust the height of the weir gate.

[0020] By installing a connecting layer on the outside of the weir gate body, the second sealing ring can be installed through the connecting layer, and the first sealing ring can be installed on the inside of the mounting frame. The second sealing ring and the first sealing ring can be made of rubber material. The first sealing ring and the second sealing ring cooperate with each other to enhance the sealing between the weir gate body and the mounting frame, thereby achieving the purpose of the adjustable automatic rotating weir gate of the flotation tank to enhance the sealing. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a frontal cross-sectional view of the present invention.

[0023] Figure 3 For the present utility model Figure 2 Enlarged cross-sectional view of a portion of point A in the middle section;

[0024] Figure 4 This is a three-dimensional structural diagram of the lifting mechanism of this utility model;

[0025] Figure 5 This is a partial sectional view of the structure of this utility model from the side.

[0026] The reference numerals in the figure are as follows: 1. Mounting frame; 2. Weir gate body; 3. Sealing structure; 301. First sealing ring; 302. Second sealing ring; 303. Connecting layer; 4. Servo motor; 5. Rotating shaft; 6. Side plate; 7. Bracket; 8. Top plate; 9. Lifting mechanism; 901. Hydraulic cylinder; 902. Hydraulic rod; 903. Push plate; 904. Mounting screw; 905. Guide rod; 10. Guide structure; 1001. Guide groove; 1002. Guide block; 1003. Sliding groove; 1004. Sliding block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 One embodiment of this utility model is an adjustable automatic rotating weir gate for an air flotation tank, including a mounting frame 1.

[0029] A side plate 6 is installed at one end of the mounting bracket 1. A guide structure 10 is provided inside the side plate 6. The guide structure 10 includes a guide groove 1001, a guide block 1002, a sliding groove 1003, and a sliding block 1004. The guide groove 1001 is located on one side of the side plate 6. The sliding groove 1003 is located on the outer side of the guide groove 1001. The guide block 1002 is located on both sides of the weir gate body 2. The sliding block 1004 is located on the outer side of the guide block 1002. The outer diameter of the sliding block 1004 is smaller than the inner diameter of the sliding groove 1003. The sliding block 1004 and the sliding groove 1003 constitute a sliding structure.

[0030] See attached document Figure 5 As shown, the servo motor 4 can drive the rotating shaft 5 to rotate, and the rotation of the rotating shaft 5 can drive the weir gate body 2 to rotate. The rotation of the weir gate body 2 can control the opening and closing of the weir gate body 2. When the weir gate body 2 rotates, the guide block 1002 on the weir gate body 2 can slide along the guide groove 1001 on the side plate 6. The sliding block 1004 on the guide block 1002 and the sliding groove 1003 on the outside of the guide groove 1001 form a sliding structure. The guide block 1002 and the guide groove 1001 cooperate to guide the rotation of the weir gate body 2.

[0031] The inner side of the mounting frame 1 is movably connected to the weir gate body 2. The bottom end of the weir gate body 2 is equipped with a rotating shaft 5, and a servo motor 4 is installed on one side of the rotating shaft 5.

[0032] The top of the mounting bracket 1 is equipped with a lifting mechanism 9, which includes a hydraulic cylinder 901, a hydraulic rod 902, a push plate 903, a mounting screw 904, and a guide rod 905. The hydraulic cylinder 901 is installed at the middle position of the top of the top plate 8.

[0033] A hydraulic rod 902 is installed at the bottom end of the hydraulic cylinder 901, and a push plate 903 is installed at the bottom end of the hydraulic rod 902. A mounting screw 904 is movably connected to the top end of the push plate 903. External threads are evenly provided on the outer side wall of the mounting screw 904, and internal threads that cooperate with the external threads are evenly provided on the inner side wall of the push plate 903. The mounting screw 904 and the push plate 903 are threadedly connected.

[0034] Guide rods 905 are installed on both sides of the bottom end of the top plate 8, and the guide rods 905 are symmetrically distributed about the central axis of the top plate 8.

[0035] See attached document Figure 1-2 and attached Figure 4 As shown, the operation of hydraulic cylinder 901 will drive hydraulic rod 902 to extend and retract. The extension and retraction of hydraulic rod 902 can drive push plate 903 to rise and fall. The mounting screw 904 and push plate 903 form a threaded connection. Push plate 903 is fixed to mounting bracket 1 by mounting screw 904. The rise and fall of push plate 903 can adjust the height of the weir gate, allowing the weir gate to adapt to different situations. Guide rod 905 can extend and retract. The extension and retraction of guide rod 905 can guide the weir gate and prevent the weir gate from deviating.

[0036] A top plate 8 is installed at the top of the lifting mechanism 9, and brackets 7 are installed on both sides of the top plate 8. A sealing structure 3 is installed on the outside of the weir gate body 2. The sealing structure 3 includes a first sealing ring 301, a second sealing ring 302 and a connecting layer 303. The connecting layer 303 is installed on the outside of the weir gate body 2, and the second sealing ring 302 is installed on the outside of the connecting layer 303. The second sealing ring 302 is installed inside the mounting bracket 1. The inner diameter of the second sealing ring 302 is larger than the inner diameter of the first sealing ring 301. The second sealing ring 302 and the first sealing ring 301 form an engaging structure.

[0037] See attached document Figure 2-3 As shown, the second sealing ring 302 can be installed through the connecting layer 303, and the first sealing ring 301 can be installed inside the mounting frame 1. The second sealing ring 302 and the first sealing ring 301 can be made of rubber material. The first sealing ring 301 and the second sealing ring 302 cooperate with each other to enhance the sealing between the weir gate body 2 and the mounting frame 1.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable automatic rotating weir gate for an air flotation tank, comprising a mounting frame (1); Its features are: A side plate (6) is installed at one end of the mounting frame (1), and a weir gate body (2) is movably connected to the inner side of the mounting frame (1). A rotating shaft (5) is installed at the bottom end of the weir gate body (2), and a servo motor (4) is installed on one side of the rotating shaft (5). The top of the mounting bracket (1) is equipped with a lifting mechanism (9), which includes a hydraulic cylinder (901), a hydraulic rod (902), a push plate (903), a mounting screw (904), and a guide rod (905). The hydraulic cylinder (901) is installed at the middle position of the top of the top plate (8). The bottom end of the hydraulic cylinder (901) is equipped with a hydraulic rod (902), the bottom end of the hydraulic rod (902) is equipped with a push plate (903), and the top end of the push plate (903) is movably connected with a mounting screw (904). The top end of the lifting mechanism (9) is equipped with a top plate (8), and brackets (7) are installed on both sides of the top plate (8). A sealing structure (3) is installed on the outside of the weir gate body (2).

2. The adjustable automatic rotating weir gate for an air flotation tank according to claim 1, characterized in that: The sealing structure (3) includes a first sealing ring (301), a second sealing ring (302) and a connecting layer (303). The connecting layer (303) is installed on the outside of the weir gate body (2). The second sealing ring (302) is installed on the outside of the connecting layer (303). The second sealing ring (302) is installed inside the mounting frame (1).

3. The adjustable automatic rotating weir gate for an air flotation tank according to claim 2, characterized in that: The inner diameter of the second sealing ring (302) is larger than the inner diameter of the first sealing ring (301), and the second sealing ring (302) and the first sealing ring (301) form an engaging structure.

4. The adjustable automatic rotating weir gate for an air flotation tank according to claim 1, characterized in that: The side plate (6) is provided with a guide structure (10) inside. The guide structure (10) includes a guide groove (1001), a guide block (1002), a sliding groove (1003) and a sliding block (1004). The guide groove (1001) is provided on one side of the side plate (6). The sliding groove (1003) is provided on the outside of the guide groove (1001). The guide block (1002) is provided on both sides of the weir gate body (2). The sliding block (1004) is provided on the outside of the guide block (1002).

5. The adjustable automatic rotating weir gate for an air flotation tank according to claim 4, characterized in that: The outer diameter of the sliding block (1004) is smaller than the inner diameter of the sliding groove (1003), and the sliding block (1004) and the sliding groove (1003) constitute a sliding structure.

6. The adjustable automatic rotating weir gate for an air flotation tank according to claim 1, characterized in that: The guide rods (905) are installed on both sides of the bottom end of the top plate (8), and the guide rods (905) are symmetrically distributed about the central axis of the top plate (8).

7. The adjustable automatic rotating weir gate for an air flotation tank according to claim 1, characterized in that: The mounting screw (904) has external threads evenly distributed on its outer side wall, and the push plate (903) has internal threads evenly distributed on its inner side wall that cooperate with the external threads. The mounting screw (904) and the push plate (903) are connected by threads.

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