Gravel raw material screening and washing equipment
By integrating a negative pressure fan and a water circulation system into the gravel screening equipment, the problems of environmental pollution and resource waste in the gravel screening and cleaning process are solved, and the recycling of cleaning water and effective control of dust are achieved.
Patent Information
- Application Number
- CN202422602860.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In the process of crushed stone screening and washing, there are problems of environmental pollution and waste of water resources.
A screening and washing equipment was designed, which included a vibrating screen, a dust collecting box, a filter box and a sedimentation box. Dust was collected by a negative pressure fan, and the dust was cleaned through a water spray pipe and the washing water was recycled to achieve dust control and water resource reuse.
It effectively avoids dust pollution, realizes the reuse of cleaning water, and reduces environmental pollution and resource waste.
Smart Images
Figure CN223405359U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gravel processing, in particular to a device for screening and washing gravel raw materials. Background Art
[0002] Graded crushed stone, as a building material, is widely used in various construction applications, including road construction, railway construction, dam construction, and housing construction. Graded crushed stone offers numerous advantages in these areas. For example, using uniformly sized crushed stone for paving results in smoother surfaces and a longer design life for roads and bridges. The production of graded crushed stone begins with a crushing process, which mechanically breaks the stone from its natural state into different sizes. This process primarily reduces the stone's diameter, making it more suitable for subsequent construction. Screening typically involves removing substandard sand, dust, and smaller pieces of stone from the crushed stone to ensure that it meets specifications. After screening, washing is typically performed to remove impurities such as dust and silt, as well as surface impurities. This ensures that the crushed stone does not cause environmental pollution or impact construction results during construction.
[0003] Currently, during the gravel screening and washing process, dust is generated, which pollutes the processing site environment. In addition, the water after washing is usually discharged directly, resulting in a waste of resources. Therefore, it is necessary to develop a gravel raw material screening and washing equipment that can avoid environmental pollution during the screening process and realize the reuse of washing water. Utility Model Content
[0004] In response to the above technical problems, the utility model provides a gravel raw material screening and washing equipment that avoids environmental pollution during the screening process and can reuse the washing water, so as to solve the problems of environmental pollution and waste of resources in the current gravel washing process.
[0005] In order to solve the above technical problems, the utility model discloses a crushed stone raw material screening and washing equipment, comprising a screening box and a chain plate conveyor, wherein the top of the screening box is connected to a feeding hopper, the bottom is connected to a discharge pipe, and a vibrating screen is arranged obliquely inside. The downwardly inclined end of the vibrating screen passes through the screening box and is located above the input end of the chain plate conveyor, the discharge pipe is connected to the dust collecting box, and the dust collecting box is connected to the negative pressure fan through a pipeline, and a dust filter plate is connected to the side of the dust collecting box close to the negative pressure fan. The chain plate conveyor is fixed above A water spray pipe is fixedly connected, and a nozzle facing the chain conveyor is connected to the water spray pipe. The water spray pipes are connected by a water outlet main pipe. The output end of the high-pressure water pump is connected to the water outlet main pipe through a pipe, and the input end is connected to the raw water tank through a pipe. An inclined water collection trough is fixedly connected to the bottom of the chain conveyor, and the downward inclined end of the water collection trough is connected to the filter box, and the lower end of the filter box is connected to the sedimentation box. The input end of the water pump extends to the middle of the sedimentation box through a pipe, and the output end is connected to the upper part of the raw water tank through a pipe.
[0006] Furthermore, a mounting block is fixedly connected inside the screening box, the vibrating screen is connected to the mounting block via a spring, and a vibrating motor is fixedly connected to the bottom of the vibrating screen.
[0007] Furthermore, material blocking plates are fixedly connected to both sides of the vibrating screen at staggered intervals.
[0008] Furthermore, a plug valve is provided on the feeding hopper, and an inclined material guide plate is fixedly connected to the screening box below the feeding hopper.
[0009] Furthermore, a cleaning door is hinged on one side of the dust box.
[0010] Furthermore, the water outlet main pipe is fixedly connected to the frame of the chain conveyor through a connecting plate.
[0011] Furthermore, the top of the filter box is connected to a water receiving hopper, the inside is detachably connected to a first filter plate and a second filter plate, and a box door is hinged on one side. The first filter plate is located above the second filter plate, and the filter hole diameter of the first filter plate is larger than the filter hole diameter of the second filter plate.
[0012] Furthermore, slide rails are fixedly connected on both sides of the filter box, and slide grooves are provided on the slide rails. Both sides of the first filter plate and the second filter plate are slidably connected to the slide grooves.
[0013] Furthermore, the water collecting tank has a V-shaped structure.
[0014] Furthermore, the bottoms of the sedimentation tank and the raw water tank are both connected to sewage pipes, and the sewage pipes are connected to valves.
[0015] Compared with the prior art, the present invention has the following advantages:
[0016] The utility model arranges a vibrating screen in the screening box, connects the dust collecting box to the discharge pipe of the screening box, connects the dust collecting box with a negative pressure fan, and arranges a dust filter plate in the dust collecting box, so as to collect stones that do not meet the specifications and suck the dust into the dust collecting box to avoid its diffusion and causing dust pollution to the environment; by arranging a water collecting trough under the chain conveyor, and arranging a filter box and a sedimentation box, the cleaned water can be collected and filtered, and after sedimentation, it can be pumped into the raw water tank for reuse, which can avoid waste of water resources and avoid damage to the water pump and the high-pressure water pump during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic structural diagram of the utility model.
[0018] Figure 2 This is a schematic diagram of the side structure of the chain conveyor and water collection trough of the utility model.
[0019] Figure 3 This is a schematic diagram of the filter box structure of the utility model.
[0020] Figure 4 This is a schematic diagram of the structure of the vibrating screen of the utility model.
[0021] In the figure: 1. screening box, 2. feeding hopper, 3. plug valve, 4. vibrating screen, 5. material baffle, 6. vibrating motor, 7. spring, 8. mounting block, 9. material guide plate, 10. dust collecting box, 11. negative pressure fan, 12. dust filter plate, 13. cleaning door, 14. chain conveyor, 15. water collecting trough, 16. water spray pipe, 17. nozzle, 18. water outlet main pipe, 19. connecting plate, 20. raw water tank, 21. high-pressure water pump, 22. filter box, 23. sedimentation box, 24. water pump, 25. sewage pipe, 26. water receiving hopper, 27. first filter plate, 28. second filter plate, 29. slide rail. DETAILED DESCRIPTION
[0022] The present invention will be further described below with reference to the accompanying drawings.
[0023] like Figure 1-4The shown crushed stone raw material screening and washing equipment includes a screening box 1 and a chain conveyor 14. The chain conveyor 14 is located on one side of the screening box 1 and the bottoms of both are fixedly connected to support legs. A feeding hopper 2 is fixedly connected to one side of the top of the screening box 1, a discharge pipe is connected to the bottom, and a vibrating screen 4 is arranged obliquely inside. The downwardly inclined end of the vibrating screen 4 passes through the screening box 1 and is located above the input end of the chain conveyor 14. The discharge pipe is connected to the upper end of the dust collecting box 10 located at the bottom of the screening box 1. The dust collecting box 10 is connected to the negative pressure fan 11 through a pipeline. A dust filter plate 12 is connected to the side of the dust collecting box 10 near the negative pressure fan 11. No less than two water spray pipes 16 are fixedly connected above the chain conveyor 14. The water spray pipe 16 is connected to a filter plate 12 facing the chain conveyor. The nozzle 17 of 14 and multiple water pipes 16 are connected by a water outlet main pipe 18. The output end of the high-pressure water pump 21 is connected to the water outlet main pipe 18 through a pipe, and the input end is connected to the raw water tank 20 through a pipe. The chain conveyor 14 is tilted and the output end is higher than the input end. An inclined water collection trough 15 is fixedly connected to the support leg at the bottom below the chain conveyor 14. The chain conveyor 14 is arranged parallel to the water collection trough 15. The downward inclined end of the water collection trough 15 is connected to the filter box 22, and the lower end of the filter box 22 is connected to the sedimentation box 23. The input end of the water pump 24 extends to the middle of the sedimentation box 23 through a pipe, and the output end is connected to the upper part of the raw water tank 20 through a pipe. In order to facilitate water addition, the raw water tank 20 is provided with a water inlet, and an end cover is provided on the water inlet.
[0024] It should be noted that, in this embodiment, a plurality of drainage holes are provided on the conveyor belt of the chain conveyor 14 and raised lifting plates are fixedly connected at intervals. The chain conveyor 14 is driven by a motor. It is an existing device and its specific structure will not be described in detail in this embodiment.
[0025] In order to ensure the screening effect of gravel, mounting blocks 8 are fixedly connected on both sides of the screening box 1. The bottom of the vibrating screen 4 is connected to the mounting blocks 8 via springs 7. The bottom of the vibrating screen 4 is fixedly connected to the vibration motor 6 via bolts. In order to prevent gravel from falling from the sides of the vibrating screen 4 into the screening box 1 during vibration, and to cushion the gravel and ensure good screening effect, staggered material blocking plates 5 are fixedly connected to the left and right sides of the upper surface of the vibrating screen 4 at intervals.
[0026] In order to adjust the discharge amount, ensure the best screening effect and avoid the crushed stones from clogging the feeding hopper 2, a plug valve 3 is provided on the feeding hopper 2. In order to guide the crushed stones to the vibrating screen 4 and prevent them from falling directly, an inclined guide plate 9 is fixedly connected to the bottom of the feeding hopper 2 in the screening box 1.
[0027] In order to clean the sand, gravel and dust collected in the dust collection box 10, and at the same time facilitate the cleaning of the dust filter plate 12 to prevent the filter plate from being blocked by sand and soil, a cleaning door 13 is hinged on one side of the dust collection box 10. It should be noted that in order to prevent dust from leaking, a sealing strip is provided between the cleaning door 13 and the dust collection box 10.
[0028] In order to facilitate the installation and fixation of the water outlet main pipe 18 and the water spray pipe 16, the water outlet main pipe 18 is fixedly connected to the frame of the chain conveyor 14 through a connecting plate 19.
[0029] In order to facilitate the recycling and reuse of the cleaning water, the cleaning water is filtered and precipitated and then reused for gravel cleaning. To prevent debris in the water from damaging the high-pressure water pump 21, a water receiving hopper 16 is connected to the top of the filter tank 22, a first filter plate 27 and a second filter plate 28 are detachably connected inside the filter tank 22, and a box door is hinged on one side. The first filter plate 27 is located above the second filter plate 28, and the pore diameter of the first filter plate 27 is larger than that of the second filter plate 28.
[0030] In order to facilitate the disassembly and installation of the first filter plate 27 and the second filter plate 28, and to facilitate their cleaning to prevent blockage after long-term use and affect the working efficiency, sliding rails 29 are fixedly connected to both sides inside the filter tank 22. The sliding rails 29 are provided with sliding grooves, and both sides of the first filter plate 27 and the second filter plate 28 are slidably connected to the sliding grooves.
[0031] In order to facilitate the collection of the cleaning water and to facilitate the introduction of the cleaning water into the water receiving hopper 16, the water collecting tank 15 is of a "V" - shaped structure. At the same time, the water collecting tank 15 can also be designed with a "U" - shaped structure or a "凵" - shaped structure.
[0032] In order to facilitate the discharge of sewage, sewage pipes 25 are connected to the bottoms of the sedimentation tank 23 and the original water tank 20, and valves are connected to the sewage pipes 25. It should be noted that under the long - term sedimentation effect, sludge that is not easily discharged may be generated at the bottom of the sedimentation tank 23. Therefore, a treatment door is hinged on one side of the sedimentation tank 23. In order to prevent water leakage, a sealing strip is provided between the treatment door and the sedimentation tank 23; at the same time, in order to facilitate the observation of the water conditions in the sedimentation tank 23 and the original water tank 20, transparent observation windows are respectively provided on one side of the sedimentation tank 23 and the original water tank 20.
[0033] The working process of this embodiment is as follows:
[0034] After the stone is crushed by the crusher, it is fed into the feeding hopper 2, and the gate valve 3 is adjusted to control the discharge amount. The stone falls onto the vibrating screen 4 through the guide plate 9, and the vibration motor 6 is started synchronously. Under the action of the spring 7, the vibration motor 6 drives the vibrating screen 4 to vibrate, and the gravel is vibrated and screened. The gravel that does not meet the specifications falls into the dust box 10, and the negative pressure fan 11 is started synchronously. Under the action of gravity, the dust can be sucked into the dust box 10, which can avoid dust pollution to the environment during the screening process. Due to the presence of the dust filter plate 12, it can protect the induced draft fan 11 while preventing dust from leaking out. The gravel can play a certain buffering role under the action of the baffle to ensure a good screening effect. The gravel after screening falls on the chain conveyor 14. The motor of the chain conveyor 14 is started to drive it to run, and the raw water tank 20 is filled with water in advance. The high-pressure water pump 21 is started simultaneously. The high-pressure water pump 21 pumps out the water in the raw water tank 20, transports it to the water outlet main 18 through the pipeline and enters the water spray pipe 16. The water is sprayed from the nozzle 17 to wash the gravel. The washed gravel is collected and used. The washed water falls into the water collection tank 15. Since the water collection tank 15 is tilted, it can enter the filter box 22 from the water receiving bucket 16, and enter the sedimentation box 23 after being filtered by the first filter plate 27 and the second filter plate 28. After a period of sedimentation, the water pump 24 is started to run. The water pump 24 pumps out the clarified liquid on the upper layer and enters the raw water tank 20 for reuse. The door of the filter box 22 is opened at regular intervals, and the first filter plate 27 and the second filter plate 28 are pulled out from the slide rail 29 for cleaning before being reused.
Claims
1. A crushed stone raw material screening and washing equipment, comprising a screening box (1) and a chain plate conveyor (14), wherein the screening box (1) is connected to a feeding hopper (2) at the top and a discharge pipe at the bottom, and a vibrating screen (4) is arranged obliquely inside, wherein the end of the vibrating screen (4) obliquely downward passes through the screening box (1) and is located above the input end of the chain plate conveyor (14), and is characterized in that: The discharge pipe is connected to the dust collecting box (10), and the dust collecting box (10) is connected to the negative pressure fan (11) through a pipeline. A dust filter plate (12) is connected to the side of the dust collecting box (10) close to the negative pressure fan (11). A water spray pipe (16) is fixedly connected above the chain conveyor (14). The water spray pipe (16) is connected to a nozzle (17) facing the chain conveyor (14). The water spray pipes (16) are connected to each other through a water outlet main pipe (18). The high-pressure water pump (21) outputs The outlet end is connected to the water outlet main pipe (18) through a pipeline, and the input end is connected to the raw water tank (20) through a pipeline. An inclined water collecting trough (15) is fixedly connected below the chain conveyor (14). The downwardly inclined end of the water collecting trough (15) is connected to the filter box (22). The lower end of the filter box (22) is connected to the sedimentation box (23). The input end of the water pump (24) extends to the middle of the sedimentation box (23) through a pipeline, and the output end is connected to the upper part of the raw water tank (20) through a pipeline.
2. The crushed stone raw material screening and washing equipment according to claim 1, characterized in that: A mounting block (8) is fixedly connected inside the screening box (1), the vibrating screen (4) is connected to the mounting block (8) via a spring (7), and a vibrating motor (6) is fixedly connected to the bottom of the vibrating screen (4).
3. The crushed stone raw material screening and washing equipment according to claim 2, characterized in that: Material blocking plates (5) are fixedly connected to both sides of the vibrating screen (4) at staggered intervals.
4. The crushed stone raw material screening and washing equipment according to claim 1, characterized in that: The feeding hopper (2) is provided with a plug valve (3), and an inclined material guide plate (9) is fixedly connected to the screening box (1) below the feeding hopper (2).
5. The crushed stone raw material screening and washing equipment according to claim 1, characterized in that: A cleaning door (13) is hinged on one side of the dust collecting box (10).
6. The crushed stone raw material screening and washing equipment according to claim 1, characterized in that: The water outlet main pipe (18) is fixedly connected to the frame of the chain conveyor (14) through a connecting plate (19).
7. The crushed stone raw material screening and washing equipment according to claim 1, characterized in that: The filter box (22) is connected to a water receiving hopper (26) at the top, is detachably connected to a first filter plate (27) and a second filter plate (28) inside, and is hinged to a box door on one side. The first filter plate (27) is located above the second filter plate (28), and the filter hole diameter of the first filter plate (27) is larger than the filter hole diameter of the second filter plate (28).
8. The crushed stone raw material screening and washing equipment according to claim 7, characterized in that: Slide rails (29) are fixedly connected on both sides of the filter box (22), and the slide rails (29) are provided with slide grooves. Both sides of the first filter plate (27) and the second filter plate (28) are slidably connected to the slide grooves.
9. The crushed stone raw material screening and washing equipment according to claim 1, characterized in that: The water collecting trough (15) is in a V-shaped structure.
10. The crushed stone raw material screening and washing equipment according to claim 1, characterized in that: The bottoms of the sedimentation tank (23) and the raw water tank (20) are both connected to a sewage pipe (25), and the sewage pipe (25) is connected to a valve.