A circulating self-cleaning trash screen for a pump station

Abstract

The present application belongs to the technical field of hydraulic engineering, and particularly relates to a circulating self-cleaning trash screen for a pump station, which comprises a motor, a rotating mechanism, a trash screen, a trash screen, a brush and a fine-meshed net bag. The motor is fixedly arranged. The rotating mechanism comprises two rotating shafts, a synchronous belt and a transmission belt. The rotating shafts are rotatably arranged. The synchronous belt is connected to the ends of the two rotating shafts. The transmission belt is in transmission connection between one rotating shaft and the output end of the motor. The trash screen is fixedly arranged on the transmission belt. The trash screen is vertically and fixedly arranged on the rotating mechanism. One end of the brush is connected to the trash screen, and the other end of the brush abuts against the trash screen. The trash screen functions to clean trash in the process of starting up and functions to block trash in the process of shutting down. The brush can clean the mesh dirt of the trash screen in the process of ascending of the trash screen, so as to avoid long-time accumulation and blockage, thereby realizing the effect of automatic and circulating trash cleaning and greatly improving the stability and automation of the equipment.

Description

Technical Field

[0001] This invention belongs to the field of water conservancy engineering technology, specifically relating to a circulating self-cleaning screen for pumping stations. Background Technology

[0002] In the middle and lower reaches of the Yangtze River, numerous waterways of varying sizes make flood drainage work increasingly urgent, and the requirements for drainage efficiency are correspondingly higher. However, during the pumping process, traditional trash racks are slow to clean mud and debris, require a large amount of manual labor, and are ineffective, seriously affecting the efficiency of flood drainage; they are also very prone to clogging, resulting in difficulties in cleaning and high labor costs for facility maintenance. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a circulating self-cleaning screen for pumping stations.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A circulating self-cleaning trash rack for a pumping station includes:

[0006] The motor is fixed in place.

[0007] The rotary mechanism includes two rotating shafts, a synchronous belt, and a transmission belt. The rotating shafts are rotatably mounted, and the synchronous belt is connected to the ends of the two rotating shafts. The transmission belt connects one of the rotating shafts to the output end of the motor.

[0008] The cleaning screen is rotated on a synchronous belt;

[0009] The debris barrier is vertically fixed on the rotary mechanism;

[0010] A brush, with one end connected to the cleaning grid and the other end abutting against the intercepting grid.

[0011] Optionally, the circulating self-cleaning screen also includes a folding mechanism, which includes a first folding brace, a second folding brace, a limiting plate, and a retraction spring. One end of the first folding brace is rotatably mounted on a timing belt, and the other end of the first folding brace is rotatably connected to one end of the second folding brace. The other end of the second folding brace is rotatably connected to one side of the screen. One end of the retraction spring is fixedly mounted on the timing belt, and the other end of the retraction spring is fixedly mounted at the connection between the first folding brace and the second folding brace.

[0012] Optionally, the limiting plate is fixedly installed on the end face of the second folding brace away from the trash rack, and the limiting plate is operable to abut against the end face of the first folding brace.

[0013] Optionally, the other end of the second folding brace has a waist-shaped hole, and one side of the cleaning grid has a protrusion that can be slidably connected inside the waist-shaped hole.

[0014] Optionally, the circulating self-cleaning screen also includes a dense mesh bag, which is fixed in place by roller crossbars.

[0015] Optionally, both the trash rack and the cleaning rack can be made of perforated metal mesh.

[0016] Optionally, the circulating self-cleaning screen also includes a reset controller, which is mounted on the motor and electrically connected to the motor.

[0017] Optionally, the circulating self-cleaning screen also includes a folding limiting component, which is fixedly installed on the upper outer side of the synchronous belt, and a folding limiting groove is formed on the folding limiting component.

[0018] Optionally, there are two folding limit components, which are arranged opposite to each other.

[0019] Optionally, the drive belt is an embedded chain, with a sprocket formed at the end of a shaft, and the embedded chain is connected to the sprocket.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] (1) The "<" shaped guide groove structure inside the folding limiting groove of this invention is simple and ingeniously designed. The limiting structure alone enables the cleaning grid to automatically fold and avoid the dense mesh bag after the debris is dumped. This achieves the effect of automatic circulation cleaning, greatly improving the stability and automation of the equipment;

[0022] (2) The folding brace and the shrinking spring in this invention can ensure that after the debris is dumped and folded through the fine mesh bag, the folding brace can be restored smoothly by shrinking and so that it can have the supporting effect again. This design is ingenious, occupies little space, has low part cost, and is easy to replace and maintain, effectively reducing the overall cost of the product.

[0023] (3) The cleaning screen of the present invention functions as cleaning screen during the start-up process and as screen blocking screen during the shutdown state. In addition, a brush is provided inside the cleaning mechanism frame to clean the mud and dirt in the screen mesh during the rising process of the cleaning screen, so as to avoid long-term accumulation and blockage. The integrated multi-functional design has low product manufacturing cost and is convenient for transportation and installation.

[0024] (4) The present invention has a simple structure, is easy to maintain, convenient to operate, allows for unlimited cycle operation, and has a good cleaning effect. Compared with traditional ordinary trash racks, it greatly improves the convenience of using trash racks, significantly reduces the labor cost of cleaning, and improves labor efficiency. It solves the problems of easy clogging, difficult cleaning, and high labor cost of facility maintenance of traditional trash racks, and also improves the overall electric integration and intelligence of water conservancy infrastructure. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a front view of the circulating self-cleaning trash rack for pumping stations proposed in this invention;

[0027] Figure 2 This is a side view of the circulating self-cleaning trash rack for pumping stations proposed in this invention.

[0028] Figure 3 This is a structural diagram of the folding mechanism proposed in this invention;

[0029] Figure 4 This is a schematic diagram showing the folding state changes of the folding mechanism proposed in this invention.

[0030] In the diagram: 1. Motor; 2. Rotary mechanism; 3. Cleaning screen; 4. Sludge barrier screen; 5. Brush; 6. Dense mesh net; 7. Shaft; 8. Synchronous belt; 9. Transmission belt; 10. Roller crossbar; 11. Folding mechanism; 12. Folding limit component; 13. Folding limit groove; 14. First folding diagonal brace; 15. Second folding diagonal brace; 16. Limiting plate; 17. Retraction spring; 18. Reset controller. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0032] Example 1

[0033] Combination Figures 1-4As shown, this embodiment discloses a circulating self-cleaning screen for a pumping station, comprising a motor 1, a rotating mechanism 2, a cleaning screen 3, a screen 4, a brush 5, and a fine-mesh net 6. The motor 1 is fixedly installed and can be fixed to the pumping station's drain outlet or installed using a separate motor 1 bracket, depending on the actual installation situation. The rotating mechanism 2 includes two shafts 7, a synchronous belt 8, and a transmission belt 9. The shafts 7 are rotatable, and the synchronous belt 8 is connected to the ends of the two shafts 7. The transmission belt 9 connects one shaft 7 to the output end of the motor 1. Specifically, in this embodiment, both the synchronous belt 8 and the transmission belt 9 are embedded chains. Each shaft 7 has sprockets at both ends, and the two synchronous belts 8 are respectively connected to the ends of the two shafts 7 on the same side. The output end of the motor 1 also has a sprocket, and one end of one shaft 7 has another sprocket. The transmission belt 9 connects to the sprocket at the end of the motor 1 and the other sprocket of one shaft 7, mainly providing power for the circulating rotation of the cleaning screen 3.

[0034] Furthermore, in this embodiment, the cleaning grid 3 is rotatably mounted on the synchronous belt 8; it is easy to understand that the cleaning grid 3 is connected between the two synchronous belts 8, and there is an installation space between the cleaning grid 3 and the rotating shaft 7.

[0035] Furthermore, in this embodiment, the debris barrier 4 is vertically fixed on the rotating mechanism 2. Specifically, the debris barrier 4 passes around two rotating shafts 7, but does not rotate with the rotating shafts 7; and the two sides of the debris barrier 4 are limited by the sprockets at both ends of the rotating shafts 7.

[0036] Furthermore, in this embodiment, one end of the brush 5 is connected to the cleaning grid 3, and the other end abuts against the trap grid 4. That is to say, the brush 5 is located in the installation space between the cleaning grid 3 and the rotating shaft 7. So when the cleaning grid 3 rotates with the synchronous belt 8, the brush 5 will also rotate around the trap grid 4, thereby cleaning the dirt in the mesh of the trap grid 4 at the same time as the cleaning grid 3 rises, avoiding long-term accumulation and blockage.

[0037] Furthermore, in this embodiment, the dense mesh bag 6 is fixedly installed by the roller crossbar 10. The dense mesh bag 6 is located next to one end face of the debris-blocking grid 4 and is used to receive the debris cleaned by the debris-cleaning mechanism. The dense mesh bag 6 is made of chemical fiber and has the characteristics of corrosion resistance, weather resistance, cut resistance, and strong load-bearing capacity.

[0038] Furthermore, the circulating self-cleaning screen in this embodiment also includes a folding mechanism 11 and folding limiting components 12. There are two folding limiting components 12, which are arranged opposite each other on both sides of the dense mesh bag 6. The folding limiting components 12 are fixedly installed on the upper outer side of the screen 4, and folding limiting grooves 13 are formed on the folding limiting components 12, the shape of which is "<". The two ends of the roller crossbar 10 are fixedly connected to the middle part of the folding limiting groove 13, and the middle crossbar can roll to limit the position of the screen 3 and the frame. The folding mechanism 11 includes a first folding brace 14, a second folding brace 15, a limiting piece 16, and a retraction spring 17. One end of the first folding brace 14 is rotatably mounted on the synchronous belt 8, and the other end of the first folding brace 14 is rotatably connected to one end of the second folding brace 15. The other end of the second folding brace 15 is rotatably connected to one side of the cleaning grid 3. The other end of the second folding brace 15 has an oblong hole for the cleaning grid 3 to move during folding. The function of the folding brace is to provide support for the cleaning grid 3. One side of the cleaning grid 3 has a protrusion that is slidably connected inside the oblong hole.

[0039] One end of the retraction spring 17 is fixedly installed on one side of the synchronous belt 8, and the other end of the retraction spring 17 is fixedly installed at the connection between the first folding brace 14 and the second folding brace 15. The retraction spring 17 ensures that after the cleaning mechanism has folded through the fine mesh bag 6 after emptying the debris, the folding brace can be smoothly restored to its original position by retraction, so that it can regain its supporting effect.

[0040] It is easy to understand that the roller crossbar 10, together with the folding limiting groove 13, performs work on the folding process of the folding diagonal brace, and relies on the squeezing action to clean up any debris that has not fallen off the surface of the cleaning grid 3. A bearing is installed at the connection between the other end of the first folding diagonal brace 14 and the second folding diagonal brace 15. The folding limiting groove 13 allows the bearing to roll in the guide groove. The bearing can reduce the coefficient of friction and improve the smoothness of the folding diagonal brace folding. Combined with the roller crossbar 10, the cleaning grid 3 folding diagonal brace is able to fold smoothly and pass through the dense mesh bag 6.

[0041] Furthermore, the folding mechanism 11 in this embodiment also includes a limiting piece 16. The limiting piece 16 is fixedly installed on the end face of the second folding brace 15 away from the trash rack 4. The limiting piece 16 is operable to abut against the end face of the first folding brace 14. The function of the limiting piece 16 is to ensure that the first folding brace 14 and the second folding brace 15 can only be folded in one direction, preventing the folding brace from folding inward.

[0042] Furthermore, in this embodiment, both the debris barrier 4 and the cleaning barrier 3 are perforated metal meshes, and the mesh size is set according to the on-site adaptation requirements of the drainage pump.

[0043] Furthermore, the circulating self-cleaning screen in this embodiment also includes a reset controller 18, which is mounted on the motor 1 and electrically connected to the motor 1. The reset controller 18 has a switching function and a positioning control program, ensuring that the cleaning mechanism returns to a fixed position after disposing of debris and stopping. At this time, the cleaning mechanism functions as the screen 4.

[0044] Therefore, the specific operation method of the circulating self-cleaning trash rack for the pumping station in this embodiment is as follows:

[0045] Step 1: Turn on the reset controller 18 switch;

[0046] Step 2: The rotary mechanism 2 drives the rotating shaft 7, causing the cleaning screen 3 to gradually rise upwards;

[0047] Step 3: The cleaning grid 3 supports the debris and rises to the top of the debris-blocking grid 4. It then rotates to the back with the rotating shaft 7, dumping the debris into the fine mesh bag 6. During the rising process, the brush 5 on the inner side of the cleaning mechanism frame simultaneously cleans the mud and dirt in the mesh of the debris-blocking grid 4 to prevent long-term accumulation and blockage.

[0048] Step 4: After the debris is emptied from the cleaning grid 3, the bearing on the folding diagonal brace is guided by the folding limit groove 13, and the roller crossbar 10 is used to force the folding diagonal brace to fold, pulling the cleaning grid 3 from a state perpendicular to the debris barrier 4 to a state gradually parallel to the debris barrier 4.

[0049] Step 5: After passing through the dense mesh bag 6, the cleaning grid 3 loses the constraint of the folding limit groove 13. Under the action of the contraction spring 17, the folding diagonal brace opens again to support the cleaning grid 3, and the cleaning operation is carried out in a cyclical rotation.

[0050] Step Six: After completing the first stage of cleaning, turn off the reset controller 18 switch. Under the action of the reset controller 18 positioning program, the cleaning grid 3 can return to the fixed position. At this time, the cleaning grid 3 is used as the dirt-blocking grid 4.

[0051] Compared with the prior art, the beneficial effects of the present invention are:

[0052] (1) The internal “<” shaped guide groove structure of the folding limiting groove 13 of this invention is simple and ingeniously designed. The limiting structure alone completes the cleaning mechanism, which can automatically fold to avoid the dense mesh bag 6 after dumping debris. This achieves the effect of automatic circulation cleaning, greatly improving the stability and automation of the equipment;

[0053] (2) The folding brace and the retraction spring 17 in this invention can ensure that after the cleaning mechanism has dumped the debris and folded it through the dense mesh bag 6, the retraction action can be used to make the folded brace recover smoothly and give it a supporting effect again. This design is ingenious, occupies little space, has low part cost, is easy to replace and maintain, and effectively reduces the overall cost of the product.

[0054] (3) The cleaning mechanism of the present invention cleans dirt during the start-up process and blocks dirt when the machine is off. A brush 5 is provided inside the frame of the cleaning mechanism to clean the dirt in the mesh of the dirt blocking grid 4 during the rising process of the cleaning mechanism, so as to avoid long-term accumulation and blockage. The integrated multi-functional design has low product manufacturing cost and is convenient for transportation and installation.

[0055] (4) The present invention has a simple structure, is easy to maintain, convenient to operate, allows for unlimited cycle operation, and has a good cleaning effect. Compared with the traditional ordinary trash rack 4, it greatly improves the convenience of using the trash rack 4, significantly reduces the labor cost of cleaning, and improves labor efficiency. It solves the problems of easy clogging, difficult cleaning, and high labor cost of facility maintenance of the traditional trash rack 4, and also improves the overall electric integration and intelligence of water conservancy infrastructure.

[0056] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" 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 application 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0057] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A circulating self-cleaning trash rack for pumping stations, characterized in that, include The motor is fixedly installed; A rotary mechanism includes two rotating shafts, a synchronous belt, and a transmission belt. The rotating shafts are rotatably mounted, and the synchronous belt is connected to the ends of the two rotating shafts. The transmission belt drives one of the rotating shafts to the output end of the motor. A cleaning screen, wherein the cleaning screen is rotatably mounted on the synchronous belt; A debris-blocking grid, which is vertically fixed on the rotary mechanism; A brush, one end of which is connected to the cleaning grid and the other end of which abuts against the debris-blocking grid; The folding mechanism includes a first folding brace, a second folding brace, a limiting plate, and a retraction spring. One end of the first folding brace is rotatably mounted on a timing belt, and the other end of the first folding brace is rotatably connected to one end of the second folding brace. The other end of the second folding brace is rotatably connected to one side of the cleaning grid. One end of the retraction spring is fixedly mounted on the timing belt, and the other end of the retraction spring is fixedly mounted at the connection between the first folding brace and the second folding brace. A close-mesh net bag, wherein the close-mesh net bag is fixedly installed by a roller crossbar; The limiting piece is fixedly installed on the end face of the second folding brace away from the trash rack, and the limiting piece is operable to abut against the end face of the first folding brace. The other end of the second folding brace has a waist-shaped hole, and one side of the cleaning grid has a protrusion that can be slidably connected to the inside of the waist-shaped hole; The folding mechanism also includes a folding limiting component, which is fixedly disposed on the upper outer side of the synchronous belt. A folding limiting groove is formed on the folding limiting component. There are two folding limiting components, which are disposed opposite to each other on both sides of the dense mesh bag. The folding limiting groove is shaped like a "<". The two ends of the roller crossbar are fixedly connected to the middle part of the folding limiting groove. The roller crossbar can roll to limit the position of the cleaning grid.

2. The circulating self-cleaning trash rack for pumping stations as described in claim 1, characterized in that, Both the debris-blocking grid and the debris-cleaning grid are perforated metal mesh sheets.

3. The circulating self-cleaning trash rack for pumping stations as described in claim 1, characterized in that, It also includes a reset controller, which is mounted on the motor and electrically connected to the motor.

4. The circulating self-cleaning trash rack for pumping stations as described in claim 1, characterized in that, The drive belt is an embedded chain, and a sprocket is formed at one end of one of the shafts, with the embedded chain connected to the sprocket.

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