Inspection well raw material pretreatment device
By integrating the grading drum screen, crushing box, and washing box, the problem of cumbersome handling of non-compliant materials in existing sand and gravel screening has been solved, achieving efficient screening, crushing, and washing of sand and gravel, and improving the processing efficiency and quality of raw materials for inspection wells.
Patent Information
- Application Number
- CN202422966412.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing sand and gravel screening and processing equipment can only screen out sand and gravel that meet specific specifications. Materials with non-compliant particle sizes need to be processed multiple times, resulting in raw material waste and cumbersome processing, which reduces work efficiency.
The system uses a grading drum screen for classifying and screening sand and gravel, and combines it with a crushing box and a washing box. It also uses a belt conveyor to automatically crush and screen non-compliant sand and gravel, integrating the processing into screening, crushing and washing.
It improved the efficiency and quality of sand and gravel processing, reduced the frequent transfer of materials, and improved the overall processing efficiency and quality of raw materials for inspection wells.
Smart Images
Figure CN223530805U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of raw material processing technology for inspection wells, specifically a pre-treatment device for raw materials for inspection wells. Background Technology
[0002] Inspection wells are installed to facilitate the maintenance and installation of underground infrastructure such as power supply, water supply, drainage, sewage, communications, cable TV, gas pipes, and street light lines in cities. They are generally located at pipe junctions, bends, changes in pipe diameter or slope, and at regular intervals along straight pipe sections to facilitate periodic inspections of ancillary structures. Common types of inspection wells include precast concrete, fiberglass, and plastic, with precast concrete wells remaining the most widely used due to their cost and stability. The production of precast concrete inspection wells typically uses cement, sand, and gravel. Sand and gravel, as a major aggregate, are usually pebbles or crushed pebbles, which help enhance the strength and durability of the concrete. Therefore, the particle size has a significant impact on the quality of the inspection well. Currently, during manhole production, sand and gravel typically require screening. However, existing sand and gravel processing equipment can only screen out sand and gravel that meets specific specifications. Materials with non-compliant particle sizes are either used directly or require multiple processing steps with specialized equipment, a cumbersome process that reduces work efficiency. Therefore, there is a need to develop a manhole raw material pretreatment device that can directly screen sand and gravel to suitable specifications, thereby improving processing efficiency. Utility Model Content
[0003] To address the above technical problems, this utility model provides a pre-treatment device for manhole raw materials that can directly screen and process sand and gravel to suitable specifications, thereby improving processing efficiency. This solves the problems of existing sand and gravel screening and processing devices causing raw material waste or cumbersome raw material processing.
[0004] To solve the above-mentioned technical problems, the present invention provides a pretreatment device for raw materials from inspection wells, comprising a frame on which a grading drum screen is rotatably connected. The grading drum screen is driven by a first motor. A feed hopper is connected to the input end of the grading drum screen, and a discharge hopper is connected to the output end. A feeding mechanism is fixedly connected to the input end of the grading drum screen, and the output end of the feeding mechanism is connected to the feed hopper. The grading drum screen is divided into three screening areas with progressively larger screen apertures from the input end to the output end. A spiral pusher plate is fixedly connected to the inner wall of the grading drum screen. Three discharge hoppers are fixedly connected to the frame directly below the grading drum screen. A washing box is located directly below each discharge hopper. The lower end of the discharge hopper is fixedly connected to the top of a crushing box. A crushing roller assembly is rotatably connected inside the crushing box and is driven by a second motor. A belt conveyor is located directly below the discharge port at the bottom of the crushing box, and the output end of the belt conveyor extends to the input end of the feeding mechanism.
[0005] Furthermore, an installation plate is fixedly connected inside the cleaning box, and a vibration groove is connected to the installation plate by a spring. A vibration motor is fixedly connected to one side of the vibration groove, and several drainage holes are opened on the bottom plate of the vibration groove. Water spray pipes are fixedly connected to both sides of the cleaning box by connecting rods, and several cleaning nozzles facing the upper surface of the vibration groove are fixedly connected to the water spray pipes. The input end of the vibration groove is located directly below the hopper, and the output end extends to the outside of the cleaning box.
[0006] Furthermore, rotating rollers are rotatably connected to both sides and the front and rear ends of the frame via roller frames. Roller grooves are fixedly connected to both ends of the outer side of the grading drum screen. The rotating rollers are engaged in the roller grooves and rotatably connected to them. The first motor is fixedly connected to the frame, and the output shaft of the first motor is fixedly connected to the shaft on one side of the rotating roller.
[0007] Furthermore, the outer cover of the grading drum screen is provided with a dust cover, which is fixedly connected to the frame, and the feed hopper and discharge hopper are fixedly connected to the dust cover.
[0008] Furthermore, the crushing roller assembly consists of two crushing rollers that rotate relative to each other. The two ends of the crushing rollers are rotatably connected to the crushing box via roller shafts. One end of the two roller shafts is fixedly connected to meshing gears. One end of one roller shaft passes through the crushing box and is fixedly connected to the output shaft of the second motor, which is fixedly connected to the outside of the crushing box.
[0009] Furthermore, the feeding mechanism is an auger conveyor, which is driven by a third motor fixedly connected to its upper end.
[0010] Furthermore, a drain pipe is connected to the bottom of one side of the cleaning tank, and the water spray pipe is connected to an external water source through a water inlet pipe.
[0011] Furthermore, the vibration groove is inclined, with the input end of the vibration groove being higher than the output end.
[0012] This utility model has the following advantages compared with the prior art:
[0013] This invention utilizes a grading drum screen to classify and screen sand and gravel. A crushing box is installed at the output end of the drum screen, and a belt conveyor connects the output end of the crushing box to the input end of the feeding mechanism. This allows for the crushing of larger, non-compliant sand and gravel after screening, which is then automatically transferred to the feeding mechanism for further screening. The process is simple and improves sand and gravel processing efficiency. Furthermore, a feeding hopper and a washing box are installed below the drum screen. The washing box contains a vibrating screen and a water spray pipe, enabling the screened sand and gravel to be sprayed and washed, improving the quality of the raw materials and consequently the quality of the inspection well. This device integrates sand and gravel screening, crushing, and washing, increasing equipment integration and avoiding the problem of frequent material transfers between multiple processes. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 This is a top view of the cleaning tank.
[0016] In the diagram: 1. Frame, 2. Grading drum screen, 3. Roller groove, 4. Rotating roller, 5. First motor, 6. Dust cover, 7. Feed hopper, 8. Discharge hopper, 9. Crushing box, 10. Crushing roller assembly, 11. Screw conveyor, 12. Discharge hopper, 13. Cleaning box, 14. Mounting plate, 15. Spring, 16. Vibration trough, 17. Vibration motor, 18. Water spray pipe, 19. Cleaning nozzle, 20. Third motor, 21. Sewage pipe, 22. Water inlet pipe. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] like Figure 1 , 2The apparatus shown includes a pretreatment device for raw materials from inspection wells, comprising a frame 1, on which a grading drum screen 2 is rotatably connected. The grading drum screen 2 is driven to rotate by a first motor 5. A feed hopper 7 is provided at the input end of the grading drum screen 2, and a discharge hopper 8 is provided at the output end. A feeding mechanism is fixedly connected to the input end of the grading drum screen 2, and the output end of the feeding mechanism is connected to the feed hopper 7. The grading drum screen 2 is divided into three screening areas with progressively larger screen apertures from the input end to the output end. A spiral pusher plate is fixedly connected to the inner wall of the grading drum screen 2. Three discharge hoppers 12 are fixedly connected to the frame 1 directly below the grading drum screen 2, each discharge hopper 12 corresponding to a phase... In the screening area with the same screen aperture, the upper edge of the feeding hopper 12 is close to the grading drum screen 2. A washing box 13 is set directly below each feeding hopper 12. The three washing boxes 13 are fixedly connected as one unit. In order to improve the overall integrity of the scheme, the washing box 13 is fixedly connected to the support leg at the bottom of the frame 1. The lower end of the discharge hopper 8 is fixedly connected to the feeding port at the top of the crushing box 9. The crushing box 9 is fixedly connected to the support leg on one side of the lower end of the frame 1. A crushing roller group 10 is rotatably connected inside the crushing box 9. The crushing roller group 10 is driven by a second motor. A belt conveyor is set directly below the discharge port at the bottom of the crushing box 9. The output end of the belt conveyor extends directly above the input end of the feeding mechanism.
[0019] In order to clean the screened sand and gravel, improve the quality of raw materials, and thus improve the quality of inspection wells, a mounting plate 14 is fixedly connected to the inner wall of the cleaning box 13. A vibration groove 16 is connected to the mounting plate 14 by a spring 15. A vibration motor 17 is fixedly connected to the vibration groove 16 by a connecting frame and bolts. Several drainage holes are opened on the bottom plate of the vibration groove 16. Water spray pipes 18 are fixedly connected to both sides of the cleaning box 13 by connecting rods. Several cleaning nozzles 19 facing the upper surface of the vibration groove 16 are fixedly connected to the water spray pipes 18. The input end of the vibration groove 16 is located directly below the hopper 12, and the output end extends to the outside of the cleaning box 13.
[0020] In order to drive the grading drum screen 2 to achieve stable rotation, rotating rollers 4 are rotatably connected to both sides and the front and rear ends of the frame 1 through roller frames. The two ends of the rotating rollers 4 are rotatably connected to the roller frames through shafts and bearings. Roller grooves 3 are fixedly connected to the outer ends of the grading drum screen 2. The rotating rollers 4 are locked in the roller grooves 3 and rotatably connected to them. Two first motors 5 are fixedly connected to both ends of the frame 1. The output shafts of the two first motors 5 are fixedly connected to the shafts on one side of the corresponding rotating rollers 4.
[0021] To prevent dust from escaping during the screening process and causing serious environmental pollution, a dust cover 6 is provided on the outside of the grading drum screen 2. The lower end of the dust cover 6 is fixedly connected to the frame 1. The feed hopper 7 and the discharge hopper 8 are both fixedly connected to the dust cover 6. The outlet end of the feed hopper 7 extends into the input end of the grading drum screen 2, and the inlet end of the discharge hopper 8 is located directly below the output end of the grading drum screen 2.
[0022] In order to effectively crush non-compliant sand and gravel, the crushing roller group 10 consists of two crushing rollers that rotate relative to each other. The two ends of the crushing rollers are rotatably connected to the crushing box 9 through roller shafts and bearings. One end of the two roller shafts is fixedly connected to meshing gears. One end of one roller shaft passes through the crushing box 9 and is fixedly connected to the output shaft of a second motor that is fixedly connected to the outside of the crushing box 9 through a motor base and bolts.
[0023] To ensure good feeding efficiency, the feeding mechanism is an auger conveyor 11. The top of the auger conveyor 11 is fixedly connected to a third motor 20 via a connecting frame and bolts. An auger shaft is rotatably connected inside the auger conveyor 11, and auger blades are fixedly connected to the auger shaft. The output shaft of the third motor 20 is fixedly connected to the upper end of the auger shaft. The input end of the auger conveyor 11 is connected to a feeding hopper, and the output end is fixedly connected to a discharge pipe, the end of which extends into the feeding hopper 7.
[0024] To facilitate the drainage of cleaning water, a drain pipe 21 is connected to the bottom of one side of the cleaning tank 13, and the water spray pipe 18 is connected to an external water source through the water inlet pipe 22. It should be noted that, in this embodiment, a high-pressure pump is installed at the external water source to ensure a good cleaning effect.
[0025] To facilitate material discharge, the vibrating trough 16 is set at an angle, with the input end of the vibrating trough 16 being higher than the output end.
[0026] The working process of this embodiment is as follows:
[0027] During sand and gravel processing, material is fed into the feeding hopper of the auger conveyor 11. The third motor 20 is started to drive the auger conveyor 11, conveying the raw material to the feed hopper 7 and into the input end of the grading drum screen 2. The first motor 5 is started, driving the rotating roller 4 to rotate, which in turn drives the grading drum screen 2 to rotate. Under the action of the spiral pusher plate, the sand and gravel are driven forward, and the sand and gravel are screened at the same time. Sand and gravel of different particle sizes enter the corresponding discharge hopper 12 and fall onto the corresponding vibrating trough 16. The vibrating motor 17 is started simultaneously. Under the action of the vibrating motor 17 and the spring 15, the vibrating trough 16 starts to drive the sand and gravel to vibrate. At the same time, the external water source is connected, and the cleaning water enters the spray pipe 18 from the water inlet pipe 22 and is sprayed onto the sand and gravel from the cleaning nozzle 19 to clean the sand and gravel in all directions. The cleaning water flows into the lower part of the cleaning tank 13 after cleaning, and the sand and gravel are output from the cleaning tank 13 along with the vibrating screen 16. When the cleaning tank 13 needs to be drained, it can be drained through the sewage pipe 21. When collecting sand and gravel, a conveying device or receiving device is placed on the outside of the cleaning tank 13 in advance for sand and gravel collection. Larger non-compliant sand and gravel enter the discharge hopper 8 from the output end of the grading drum screen 2 and enter the crushing box 9 from the discharge hopper 8. The second motor is started at the same time, and the second motor drives the crushing roller group 10 to run and crush the sand and gravel. After crushing, the crushed sand and gravel fall from the discharge port at the bottom of the crushing box 9 onto the belt conveyor. The belt conveyor is started to transport the sand and gravel to the feeding hopper of the auger conveyor 11 for re-screening.
Claims
1. A pretreatment device for raw materials from inspection wells, comprising a frame (1), wherein a grading drum screen (2) is rotatably connected to the frame (1), the grading drum screen (2) is driven by a first motor (5), and the input end of the grading drum screen (2) is connected to a feed hopper (7) and the output end is connected to a discharge hopper (8), characterized in that: The input end of the grading drum screen (2) is fixedly connected to a feeding mechanism, and the output end of the feeding mechanism is connected to the feeding hopper (7). The grading drum screen (2) is divided into three screening areas with gradually increasing screen hole diameters from the input end to the output end. The inner wall of the grading drum screen (2) is fixedly connected to a spiral pusher plate. Three discharge hoppers (12) are fixedly connected on the frame (1) directly below the grading drum screen (2). A cleaning box (13) is provided directly below each discharge hopper (12). The lower end of the discharge hopper (8) is fixedly connected to the top of the crushing box (9). A crushing roller group (10) is rotatably connected inside the crushing box (9). The crushing roller group (10) is driven by a second motor. A belt conveyor is provided directly below the bottom discharge port of the crushing box (9). The output end of the belt conveyor extends to the input end of the feeding mechanism.
2. The inspection well raw material pretreatment device according to claim 1, characterized in that: An installation plate (14) is fixedly connected inside the cleaning tank (13). A vibration groove (16) is connected to the installation plate (14) via a spring (15). A vibration motor (17) is fixedly connected to one side of the vibration groove (16). Several drainage holes are provided on the bottom plate of the vibration groove (16). Water spray pipes (18) are fixedly connected to both sides of the cleaning tank (13) via connecting rods. Several cleaning nozzles (19) facing the upper surface of the vibration groove (16) are fixedly connected to the water spray pipes (18). The input end of the vibration groove (16) is located directly below the hopper (12), and the output end extends to the outside of the cleaning tank (13).
3. The inspection well raw material pretreatment device according to claim 1, characterized in that: The frame (1) has rotating rollers (4) rotatably connected to both sides and the front and rear ends via roller frames. The outer ends of the grading drum screen (2) are fixedly connected to roller grooves (3). The rotating rollers (4) are locked in the roller grooves (3) and rotatably connected to them. The first motor (5) is fixedly connected to the frame (1). The output shaft of the first motor (5) is fixedly connected to the shaft on one side of the rotating rollers (4).
4. The inspection well raw material pretreatment device according to claim 1, characterized in that: The outer side of the grading drum screen (2) is covered with a dust cover (6), which is fixedly connected to the frame (1). The feed hopper (7) and the discharge hopper (8) are fixedly connected to the dust cover (6).
5. The inspection well raw material pretreatment device according to claim 1, characterized in that: The crushing roller assembly (10) consists of two crushing rollers that rotate relative to each other. The two ends of the crushing rollers are rotatably connected to the crushing box (9) via roller shafts. One end of the two roller shafts is fixedly connected to meshing gears. One end of one roller shaft passes through the crushing box (9) and is fixedly connected to the output shaft of the second motor, which is fixedly connected to the outside of the crushing box (9).
6. The inspection well raw material pretreatment device according to claim 1, characterized in that: The feeding mechanism is an auger conveyor (11), which is driven by a third motor (20) fixedly connected to its upper end.
7. The inspection well raw material pretreatment device according to claim 2, characterized in that: The bottom of one side of the cleaning tank (13) is connected to a drain pipe (21), and the water spray pipe (18) is connected to an external water source through a water inlet pipe (22).
8. The inspection well raw material pretreatment device according to claim 2, characterized in that: The vibration groove (16) is inclined, and the input end of the vibration groove (16) is higher than the output end.