Sand screening device for municipal engineering
By designing a sand screening device with a semi-enclosed structure and rotating components, the maintenance difficulties and dust pollution problems of traditional sand screening devices are solved, the screen is easily replaced and dust is controlled, and the screening efficiency and quality are improved.
Patent Information
- Application Number
- CN202422739582.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-11
AI Technical Summary
The screen of traditional sand screening device is not easy to replace, the closed structure is complex and difficult to maintain, and the dust generated during the sand screening process pollutes the environment.
A semi-enclosed sand screening device is designed, which includes a flat cylindrical chassis, a cylindrical steel frame, an electric cylinder, a rotating component and a dust collector. The rotating component is detachable and has a screen, and the dust collector is used to reduce dust.
The screen is easy to replace, which reduces maintenance difficulty, reduces dust pollution, and improves screening efficiency and quality.
Smart Images
Figure CN223405321U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of municipal engineering sand and gravel screening equipment, in particular to a sand screening device for municipal engineering. Background Art
[0002] In the construction process of municipal engineering, sand and gravel are one of the most commonly used building materials, and their quality and particle size distribution have an important impact on the quality of the project.
[0003] In practical applications, due to the technical requirements of municipal construction, sand screening is often required to obtain a specified particle size or finer sand. However, traditional sand screening methods have several problems. For example, the screens of some sand screening devices are located inside the device and are difficult to replace. Enclosed sand screening devices are complex and often difficult to maintain, significantly affecting work efficiency. Furthermore, the dust generated during the sand screening process often pollutes the surrounding air and affects people's health.
[0004] It is in this context that the present invention proposes a sand screening device for municipal engineering, which aims to solve the problems existing in existing sand screening devices through innovative technical means, improve the efficiency and quality of sand and gravel screening, and provide more reliable and efficient sand screening equipment for municipal engineering construction. Utility Model Content
[0005] In order to make up for the deficiencies in the prior art and achieve the above functions, the utility model provides a sand screening device for municipal engineering.
[0006] The utility model is achieved through the following technical solutions:
[0007] A sand screening device for municipal engineering projects comprises a flat cylindrical chassis and a cylindrical steel frame mounted on the chassis. A through hole having the same diameter as the inner wall of the steel frame is provided at the center of the chassis. The chassis and the steel frame are concentric with each other and four electric cylinders are arranged on the outside of the steel frame. A rotating assembly is mounted on the top of the electric push rod of each electric cylinder. A hemispherical sieve pot is provided directly above the steel frame and is connected to the rotating assembly via four chains.
[0008] The sieve pot is padded with a sieve mesh and both are provided with sieve holes running through the upper and lower parts.
[0009] Furthermore, the rotating assembly includes a joint fixedly connected to the electric push rod, a cavity is provided on the joint and an extended inverted T-shaped rotating column is fixed in the cavity, a bearing is provided on the rotating column, a steel pad is provided at the bottom of the rotating column and a shock-absorbing pad is provided at the bottom of the steel pad.
[0010] Furthermore, a through hole facing the steel frame is provided at the top of the rotating column, and chain holes corresponding to the position of the rotating column are provided on the sides of the sieve pot and the screen. The chain holes and the through holes on the rotating column are passed through by chains for floating fixation, and the chains are tilted and stretched rather than horizontal.
[0011] Furthermore, a "cross"-shaped anti-fall frame is provided on the inner wall of the steel frame at a position corresponding to each electric cylinder. The top center of the anti-fall frame is a concave sphere, and the bottom is flush with the steel frame.
[0012] Furthermore, a vacuum cleaner is provided between every two electric cylinders, and a dust suction port of the vacuum cleaner passes through the steel frame and leads to the interior.
[0013] Furthermore, a circle of supporting is provided at the place where the top of the screen mesh and the screen pot are in contact, the screen holes on the screen mesh correspond to the positions of the screen holes on the screen pot, and the screen holes on the screen mesh are not larger than the size of the screen holes on the screen pot.
[0014] Furthermore, a square frame is provided at the bottom of the chassis, which is passed through from front to back, and a push cart is provided in the square frame. The length of the push cart is longer than the diameter of the chassis, and the width of the push cart is greater than the diameter of the steel frame.
[0015] The beneficial effects of the utility model are:
[0016] The utility model has a semi-enclosed structure as a whole, which is convenient for disassembly and replacement of related components; the rotating component designed in the utility model can withstand a certain pressure and rotate, that is, it is a non-rigid design, which can greatly extend the service life; the utility model is easy to replace screens of different specifications, and can operate on sand and gravel that meet various municipal requirements; the overall design of the utility model can greatly reduce dust, and four dust collectors are used to reduce internal dust. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the rotating assembly of the utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the screen of the utility model;
[0020] Figure 4 It is a schematic diagram of the structure after removing the sieve pot;
[0021] In the picture:
[0022] 1. Chassis, 2. Steel frame, 201. Anti-fall frame, 3. Electric cylinder, 301. Electric push rod,
[0023] 4. Rotating assembly, 401. Rotating column, 402. Bearing, 403. Steel pad, 404. Shock absorber, 405. Joint,
[0024] 5. Sieve pot, 501, sieve, 5011, sieve hole, 5012, chain hole,
[0025] 6. Vacuum cleaner, 7. Chain, 8. Push cart. DETAILED DESCRIPTION
[0026] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in a variety of different configurations.
[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.
[0028] like Figures 1 to 4 As shown, the utility model includes a flat cylindrical chassis 1 and a cylindrical steel frame 2 mounted on the chassis 1. A through hole with the same diameter as the inner wall of the steel frame 2 is provided in the center of the chassis 1 to allow the sieved sand to pass through. The chassis 1 and the steel frame 2 are concentric and four electric cylinders 3 are arranged on the outside of the steel frame 2. A rotating assembly 4 is installed on the top of the electric push rod 301 of each electric cylinder 3 to ensure a certain degree of rotation. A hemispherical sieve pot 5 is provided directly above the steel frame 2 and is connected to the rotating assembly 4 by four chains 7. The holes in the chains 7 can be locked using conventional loops and lock buckles.
[0029] The sieve pot 5 is padded with a sieve 501 and both are provided with sieve holes 5011 running through from top to bottom.
[0030] The rotating assembly 4 includes a joint 405 fixedly connected to the electric push rod 301, and a cavity is provided on the joint 405, and an inverted T-shaped rotating column 401 is fixed in the cavity. A bearing 402 is provided on the rotating column 401, and the bearing adopts a conventional type that can comprehensively withstand radial and axial forces. A steel pad 403 is provided at the bottom of the rotating column 401, which is clearance-matched with the inner wall of the cavity to increase the rotational slippage with the upper rotating column 401 and prevent excessive friction with the rubber shock-absorbing pad 404 below. A shock-absorbing pad 404 is provided at the bottom of the steel pad 403; therefore, the joint 405 can withstand a certain degree of vibration and rotation.
[0031] A through hole facing the steel frame 2 is provided at the top of the rotating column 401, and a chain hole 5012 adapted to the position of the rotating column 401 is provided on the side of the sieve pot 5 and the screen 501. The chain hole 5012 and the through hole on the rotating column 401 are both passed through by the chain 7, and the chain 7 is inclined rather than horizontally stretched, to ensure that the sieve pot 5 can be slightly swung up and down and has a certain amount of movable margin.
[0032] A "cross"-shaped anti-fall frame 201 is provided on the inner wall of the steel frame 2 and at a position corresponding to each electric cylinder. The top center of the anti-fall frame 201 is a concave sphere, and the bottom is flush with the steel frame 2. When the electric push rods 301 of all the electric cylinders 3 are lowered, the sieve pot 5 can be placed on the anti-fall frame 201 for disassembly.
[0033] A dust collector 6 is provided between every two electric cylinders 3 , and a dust suction port of the dust collector 6 passes through the steel frame 2 and leads to the interior for internal dust collection.
[0034] A circle of support is provided at the place where the top of the screen 501 and the screen pot 5 are in contact, which can limit the position and support and unload the force. The sieve holes 5011 on the screen 501 correspond to the positions of the sieve holes 5011 on the screen pot 5. The sieve holes 5011 on the screen 501 are not larger than the size of the sieve holes 5011 on the screen pot 5. This requirement must be met each time the screen 501 with different diameters of the sieve holes 5011 is replaced.
[0035] A square frame is provided at the bottom of the chassis 1, which runs through the front and back, and a push cart 8 is provided in the square frame. The length of the push cart 8 is longer than the diameter of the chassis 1 for easy pushing, and the width of the push cart 8 is greater than the diameter of the steel frame 2 to prevent sand and gravel from leaking out.
[0036] The electric cylinder, vacuum cleaner and other components in this device need to be connected to control devices such as PLC, host computer, power supply, etc. These are all existing technologies and will not be described in detail.
[0037] The working principle of the present invention is as follows: (1) The sand and gravel to be screened are loaded into the screen pot 5, and the four electric cylinders 3 are started to control the electric push rod 301 to rise and fall in sequence. The sequence is fixed in a clockwise or counterclockwise direction, which will cause the screen pot 5 to tilt in all directions to ensure the rotation of the sand and gravel inside. (2) When the sand and gravel need to be turned over, the height of the four rotating components 4 are consistent, and they rise or fall at the same time to make the screen pot 5 float up and down strongly. (3) After the above steps, the sand and gravel of the specified size falls through the screen 501 and the steel frame 2 into the push cart 8 in the chassis 1 and is transported away. (4) When a screen 501 with a different mesh size 5011 is required or even when a damaged screen pot 5 is replaced, the electric push rod 301 only needs to be lowered, and the bottom of the screen pot 5 contacts and is supported by the arc top surface of the anti-fall frame 201, and then the chain 7 is removed for replacement.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.
Claims
1. A sand screening device for municipal engineering, characterized by: The invention comprises a flat cylindrical chassis (1) and a cylindrical steel frame (2) mounted on the chassis (1), wherein a through hole having the same diameter as the inner wall of the steel frame (2) is provided at the center of the chassis (1), the chassis (1) and the steel frame (2) are concentric and four electric cylinders (3) are arranged on the outer side of the steel frame (2), a rotating assembly (4) is installed on the top of the electric push rod (301) of each electric cylinder (3), and a hemispherical sieve pot (5) is provided directly above the steel frame (2) and is connected to the rotating assembly (4) via four chains (7); The sieve pot (5) is padded with a sieve (501) and both are provided with sieve holes (5011) running through from top to bottom.
2. The sand screening device for municipal engineering according to claim 1, characterized in that: The rotating assembly (4) includes a joint (405) fixedly connected to the electric push rod (301), a cavity is provided on the joint (405), and an inverted T-shaped rotating column (401) is fixed in the cavity, a bearing (402) is provided on the rotating column (401), a steel pad (403) is provided at the bottom of the rotating column (401), and a shock-absorbing pad (404) is provided at the bottom of the steel pad (403).
3. The sand screening device for municipal engineering according to claim 2, characterized in that: A through hole facing the steel frame (2) is provided at the top of the rotating column (401), and a chain hole (5012) adapted to the position of the rotating column (401) is provided on the side of the sieve pot (5) and the sieve (501). The chain hole (5012) and the through hole on the rotating column (401) are both passed through by a chain (7) for floating fixation, and the chain (7) is tilted and straightened rather than horizontal.
4. The sand screening device for municipal engineering according to claim 1, characterized in that: A "cross"-shaped anti-fall frame (201) is provided on the inner wall of the steel frame (2) at a position corresponding to each electric cylinder. The top center of the anti-fall frame (201) is concave spherical, and the bottom is flush with the steel frame (2).
5. The sand screening device for municipal engineering according to claim 1, characterized in that: A dust collector (6) is provided between every two electric cylinders (3), and a dust suction port of the dust collector (6) passes through the steel frame (2) and leads to the interior.
6. The sand screening device for municipal engineering according to claim 3, characterized in that: A circle of supporting is provided at the position where the top of the screen (501) and the screen pot (5) are in contact. The screen holes (5011) on the screen (501) correspond to the positions of the screen holes (5011) on the screen pot (5). The screen holes (5011) on the screen (501) are not larger than the size of the screen holes (5011) on the screen pot (5).
7. The sand screening device for municipal engineering according to claim 1, characterized in that: A square frame is provided at the bottom of the chassis (1) and extends through the front and back, and a push trolley (8) is provided in the square frame. The push trolley (8) is longer than the diameter of the chassis (1), and the width of the push trolley (8) is greater than the diameter of the steel frame (2).