Concrete screening equipment with multi-stage screening structure

Abstract

The utility model relates to the technical field of concrete screening, and discloses concrete screening equipment with a multi-stage screening structure, which comprises a box body, a feeding hole is formed in the top of the box body, a screening plate is arranged in the box body, a vibrating motor is fixedly connected to the lower surface of the screening plate, a cleaning structure is arranged in the box body, and the multi-stage screening structure is arranged in the box body. The cleaning mechanism comprises a mounting frame, the side wall of the box body is fixedly connected with the side wall of the mounting frame, the inner surface of the mounting frame is fixedly connected with the end of a motor, the output end of the motor is fixedly connected with the end of a reciprocating lead screw, and the outer surface of the reciprocating lead screw is fixedly connected with the inner surface of a driving wheel. The driving wheel is in transmission connection with a driven wheel through a transmission belt, the outer surface of the reciprocating lead screw is in threaded connection with the inner wall of a threaded block, a fixing frame is arranged on the upper surface of the threaded block, and by arranging a cleaning structure, the multi-stage screening efficiency of concrete is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete screening, in particular to concrete screening equipment with a multi-stage screening structure. Background Art

[0002] During the preparation of concrete, large particles or impurities in the concrete need to be screened and filtered to ensure the quality of the concrete. Before concrete mixing, a sieve is usually used to screen the concrete raw materials, such as gravel, sand, etc., and filter out the fine particles. This can not only consider the uniformity and suitability of the material, but also reduce the burden on the mixing machine.

[0003] According to a disclosed multi-stage screening device for concrete aggregates (publication number: CN218835178U), in the above application, the upper sieve plate and the lower sieve plate cooperate with each other, so that aggregates of various sizes can be screened and collected. The upper sieve plate and the lower sieve plate can be driven to vibrate up and down through the cooperation of the power parts, the rotating shaft and the cam, thereby reducing the residence of aggregates on the upper sieve plate and the lower sieve plate and improving the screening efficiency.

[0004] However, in actual use of the above equipment, the upper and lower sets of sieve plates are vibrated by means of power parts in conjunction with structures such as rotating shaft cams, so that the concrete can be screened quickly. However, the sieve holes will be blocked during long-term screening, and the upper and lower sets of sieve plates cannot be cleaned at the same time, which will reduce the screening effect of the concrete. In view of this, we propose a concrete screening equipment with a multi-stage screening structure. Utility Model Content

[0005] The purpose of the utility model is to provide a concrete screening device with a multi-stage screening structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a concrete screening device with a multi-stage screening structure, comprising a box body, a feeding port is provided on the top of the box body, and the feeding port is convenient for feeding concrete, a sieve plate is arranged inside the box body, and a vibration motor is fixedly connected to the lower surface of the sieve plate, and a cleaning structure is arranged inside the box body, and the cleaning mechanism includes:

[0007] A mounting frame, the side wall of the box body is fixedly connected to the side wall of the mounting frame, the inner surface of the mounting frame is fixedly connected to the end of the motor, the output end of the motor is fixedly connected to the end of the reciprocating screw rod, the outer surface of the reciprocating screw rod is fixedly connected to the inner surface of the driving wheel, and the driving wheel is connected to the driven wheel through a transmission belt;

[0008] A threaded block, wherein the outer surface of the reciprocating screw is threadedly connected to the inner wall of the threaded block, and when the screen plate is not cleaned, the threaded block is located at a position of the reciprocating screw close to the highest point of the screen plate, and a fixing frame is provided on the upper surface of the threaded block, and the bottom of the fixing frame is fixedly connected to the fixed end of the telescopic rod, and the outer wall of the telescopic rod is provided with a telescopic spring, and the bottom of the telescopic spring is fixedly connected to the top of the fixed plate, and the fixed plate is used to install a brush bundle, and the bottom of the fixed plate is fixedly connected to the end of the brush bundle;

[0009] An avoidance groove is provided on the side wall of the threaded block, and the avoidance groove facilitates the convex ball to squeeze the contact rod. A convex ball is provided on the outer side of the avoidance groove, and a contact rod is provided on the side wall of the convex ball. A sliding groove is provided on the inner surface of the threaded block, and one end of a fixed spring is fixedly connected to the inner wall of the sliding groove, and the other end of the fixed spring is fixedly connected to the side wall of the slider, and the slider limits the trajectory of movement of the fixed frame through the sliding groove.

[0010] Preferably, the side of the threaded block close to the avoidance groove is in contact with the inner wall of the box, the side wall of the fixing frame is fixedly connected with an end of the slider away from the slide groove, and the end of the slider close to the slide groove is slidably connected to the inside of the slide groove.

[0011] Preferably, the movable end of the telescopic rod is fixedly connected to the top of the fixed plate, and the threaded block is arranged in a U shape.

[0012] Preferably, the outer surface of the reciprocating screw is fixedly connected to the inner wall of the cam, a connecting plate is provided at the bottom of the cam, the side wall of the connecting plate is fixedly connected to the end of the cleaning rod, the other side of the connecting plate is fixedly connected to one side of the moving block, the other side of the moving block is slidably connected to the inner wall of the guide rail, and the side wall of the guide rail is fixedly connected to one end of the reset spring.

[0013] Preferably, one end of the return spring away from the guide rail is fixedly connected to the top of the moving block.

[0014] Preferably, a guide rail is provided on the inner wall of the box.

[0015] Compared with the prior art, the utility model provides a concrete screening device with a multi-stage screening structure, which has the following beneficial effects:

[0016] 1. The concrete screening equipment with a multi-stage screening structure is provided with a motor to drive a reciprocating screw rod, and then cooperates with a driving wheel and a driven wheel to make two groups of reciprocating screw rods drive two groups of threaded blocks to move left and right inside the box body, and then two groups of brush bundles move left and right to clean the two groups of screen plates, and the deformation force of the telescopic rod and the telescopic spring enables the brush bundle to maintain the fit to the inclined screen plate when moving left and right, and the squeezing force of multiple groups of convex balls on the contact rod makes the fixed frame drive the slider to slide inside the slide groove, and then the fixed spring is reset to make the brush bundle clean the screen plate left and right, front and back, and the vibration force of the vibration motor is used to prevent the sieve holes of the screen plate from being blocked, thereby improving the effect of multi-stage screening of concrete.

[0017] 2. The concrete screening equipment with a multi-stage screening structure is provided with a cam to squeeze the connecting plate, so that it drives the moving block to slide inside the slide rail. The reset spring enables the connecting plate to continuously contact the cam. Then, when the brush bundle moves back and forth to the cleaning rod once, the cleaning rod is inserted into the cleaning rod and displaced to a certain extent, so that the concrete residue embedded in the brush bundle is shaken off, thereby avoiding secondary contamination caused by the brush bundle when cleaning the screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a left side schematic diagram of the internal structure of the main body of the utility model;

[0019] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of the middle A area;

[0020] Figure 3 For this utility model Figure 1 A schematic diagram of the structure of the middle B region;

[0021] Figure 4 This is a right side schematic diagram of the main body of the utility model without the fixing frame structure;

[0022] Figure 5 For this utility model Figure 4 A magnified schematic diagram of the structure of the middle C region;

[0023] Figure 6 It is a side view schematic diagram of the fixing frame structure of the utility model;

[0024] Figure 7 It is a bottom view schematic diagram of the internal structure of the main body of the utility model.

[0025] In the figure: 1. box body; 2. feed inlet; 3. sieve plate; 4. vibration motor; 5. mounting frame; 6. motor; 7. reciprocating screw; 8. driving wheel; 9. driven wheel; 10. threaded block; 11. fixing frame; 12. telescopic rod; 13. telescopic spring; 14. fixing plate; 15. brush bundle; 16. avoidance groove; 17. convex ball; 18. contact rod; 19. slide groove; 20. slider; 21. fixing spring; 22. cleaning rod; 23. cam; 24. guide rail; 25. moving block; 26. reset spring; 27. connecting plate. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 7 As shown, the utility model provides a technical solution: a concrete screening device with a multi-stage screening structure, including a box body 1, a feed port 2 is opened on the top of the box body 1, a sieve plate 3 is arranged inside the box body 1, and a vibration motor 4 is fixedly connected to the lower surface of the sieve plate 3, and a cleaning structure is arranged inside the box body 1, and the cleaning mechanism includes a mounting frame 5, a motor 6, a reciprocating screw 7, a driving wheel 8, a driven wheel 9, a threaded block 10, a fixing frame 11, a telescopic rod 12, a telescopic spring 13, a fixing plate 14, a brush bundle 15, an avoidance groove 16, a convex ball 17, a contact rod 18, a slide groove 19, a slider 20, and a fixing spring 21.

[0027] In the embodiment of the utility model, the side wall of the box body 1 is fixedly connected to the side wall of the mounting frame 5, the inner surface of the mounting frame 5 is fixedly connected to the end of the motor 6, the output end of the motor 6 is fixedly connected to the end of the reciprocating screw 7, the outer surface of the reciprocating screw 7 is fixedly connected to the inner surface of the driving wheel 8, the driving wheel 8 is connected to the driven wheel 9 through a transmission belt, the outer surface of the reciprocating screw 7 is threadedly connected to the inner wall of the thread block 10, the upper surface of the thread block 10 is provided with a fixing frame 11, and the bottom of the fixing frame 11 is fixedly connected to the fixing of the telescopic rod 12 The outer wall of the telescopic rod 12 is provided with a telescopic spring 13, the bottom of the telescopic spring 13 is fixedly connected to the top of the fixed plate 14, the bottom of the fixed plate 14 is fixedly connected to the end of the brush bundle 15, the side wall of the threaded block 10 is provided with an avoidance groove 16, the outer side of the avoidance groove 16 is provided with a convex ball 17, the side wall of the convex ball 17 is provided with a contact rod 18, the inner surface of the threaded block 10 is provided with a slide groove 19, the inner wall of the slide groove 19 is fixedly connected to one end of a fixed spring 21, and the other end of the fixed spring 21 is fixedly connected to the side wall of the slider 20.

[0028] In one embodiment of the present invention, the side of the threaded block 10 close to the avoidance groove 16 is in contact with the inner wall of the box body 1, the side wall of the fixed frame 11 is fixedly connected to the end of the slider 20 away from the slide groove 19, the end of the slider 20 close to the slide groove 19 is slidably connected to the inside of the slide groove 19, the movable end of the telescopic rod 12 is fixedly connected to the top of the fixed plate 14, the threaded block 10 is arranged in a U shape, the outer surface of the reciprocating screw 7 is fixedly connected to the inner wall of the cam 23, the bottom of the cam 23 is provided with a connecting plate 27, the side wall of the connecting plate 27 is fixedly connected to the end of the cleaning rod 22, the other side of the connecting plate 27 is fixedly connected to one side of the moving block 25, the other side of the moving block 25 is slidably connected to the inner wall of the guide rail 24, the side wall of the guide rail 24 is fixedly connected to one end of the return spring 26, the end of the return spring 26 away from the guide rail 24 is fixedly connected to the top of the moving block 25, and the inner wall of the box body 1 is provided with a guide rail 24 The end of the convex ball 17 is fixedly connected to the inner wall surface of the box body 1 close to the threaded block 10, the end of the contact rod 18 is fixedly connected to the end of the fixing frame 11 close to the threaded block 10, and the end of the fixing frame 11 is slidably connected to the U-shaped surface of the threaded block 10. There are two groups of reciprocating screw rods 7, and the two groups of reciprocating screw rods 7 are respectively fixedly connected to the driving wheel 8 and the driven wheel 9. There are two groups of sieve plates 3, and the two groups of sieve plates 3 are inclined and located inside the box body 1. The sieve hole aperture of the sieve plate 3 at the upper end of the box body 1 is larger than the sieve hole aperture of the sieve plate 3 at the lower end of the box body 1. A group of vibration motors 4 are respectively arranged at the bottom of the two groups of sieve plates 3. A protective cover is arranged on the outside of the vibration motor 4 and is powered by a battery. The two groups of sieve plates 3 are arranged in an inclined shape inside the box body 1, and a discharge port is opened at the lowest position where the two groups of sieve plates 3 are inclined. A group of discharge ports are also opened inside the box body 1, which is convenient for the zoning collection of multi-stage screened raw materials.

[0029] In the present invention, when in use, the raw materials to be screened are put into the box body 1 through the feed port 2, and the two sets of vibration motors 4 are turned on to drive the two sets of sieve plates 3 to vibrate, thereby accelerating the screening speed of the two sets of sieve plates 3 for the raw materials. The discharge port at the top of the box body 1 receives concrete with a larger particle size, the discharge port in the middle of the box body 1 receives concrete with a medium particle size, and the discharge port at the bottom of the box body 1 receives concrete with a smallest particle size. After the sieve plate 3 performs multi-stage screening on the concrete for a long time, some concrete will adhere to the sieve holes of the sieve plate 3, resulting in The two sets of reciprocating screws 7 rotate at the same time, and then the two sets of threaded blocks 10 drive the two sets of brush bundles 15 to clean the surfaces of the two sets of sieve plates 3. When the two sets of threaded blocks 10 move left and right, the protrusions of the convex balls 17 will produce an extrusion force on the contact rod 18, so that the fixed frame 11 drives the sliders 20 on both sides to slide inside the slide groove 19, so that the fixed spring 21 is deformed, and the fixed frame 11 is driven by the force The brush bundle 15 moves back and forth for cleaning. At the same time, when the brush bundle 15 gradually approaches the lowest point of the sieve plate 3 from the highest point of the sieve plate 3, the telescopic rod 12 and the telescopic spring 13 recover their deformation and gradually stretch, ensuring that the brush bundle 15 is in contact with the sieve plate 3 during the movement, and then cooperates with the vibration force of the vibration motor 4 to clean the concrete residue blocked by the sieve plate 3. Finally, when the brush bundle 15 approaches the cleaning rod 22, the cleaning rod 22 will be inserted into the interior of the brush bundle 15. At this moment, the brush bundle 15 is driven by the vibrating sieve plate 3 to vibrate, which will embed the concrete residue inside. The concrete is shaken off, and at the same time, the cam 23 is driven by the reciprocating screw 7 to reciprocate and knock on the connecting plate 27, so that the connecting plate 27 drives the moving block 25 to move inside the guide rail 24. The reset spring 26 helps the connecting plate 27 to reset and contact the cam 23 again, and then the cleaning rod 22 can reciprocate and produce a certain range of motion when inserted into the brush bundle 15, thereby expanding the cleaning effect of the brush bundle 15, avoiding the brush bundle 15 containing concrete residues and causing secondary contamination to the screen plate 3 when cleaning, thereby improving the effect of multi-stage screening of concrete.

[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A concrete screening device with a multi-stage screening structure, comprising a box (1), a feed port (2) is provided on the top of the box (1), a screen plate (3) is provided inside the box (1), a vibration motor (4) is fixedly connected to the lower surface of the screen plate (3), and is characterized in that: A cleaning structure is provided inside the box (1), and the cleaning structure comprises: A mounting frame (5), the side wall of the box body (1) is fixedly connected to the side wall of the mounting frame (5), the inner surface of the mounting frame (5) is fixedly connected to the end of a motor (6), the output end of the motor (6) is fixedly connected to the end of a reciprocating screw rod (7), the outer surface of the reciprocating screw rod (7) is fixedly connected to the inner surface of a driving wheel (8), and the driving wheel (8) is connected to a driven wheel (9) through a transmission belt; A threaded block (10), the outer surface of the reciprocating screw rod (7) is threadedly connected to the inner wall of the threaded block (10), the upper surface of the threaded block (10) is provided with a fixing frame (11), the bottom of the fixing frame (11) is fixedly connected to the fixed end of a telescopic rod (12), the outer wall of the telescopic rod (12) is provided with a telescopic spring (13), the bottom of the telescopic spring (13) is fixedly connected to the top of a fixing plate (14), and the bottom of the fixing plate (14) is fixedly connected to the end of a brush bundle (15); An avoidance groove (16) is provided on the side wall of the threaded block (10), a convex ball (17) is provided on the outer side of the avoidance groove (16), a contact rod (18) is provided on the side wall of the convex ball (17), a sliding groove (19) is provided on the inner surface of the threaded block (10), one end of a fixed spring (21) is fixedly connected to the inner wall of the sliding groove (19), and the other end of the fixed spring (21) is fixedly connected to the side wall of the slider (20).

2. The concrete screening device with a multi-stage screening structure according to claim 1, characterized in that: The side of the threaded block (10) close to the avoidance groove (16) is in contact with the inner wall of the box body (1), and the side wall of the fixing frame (11) is fixedly connected to an end of the slider (20) away from the slide groove (19), and the end of the slider (20) close to the slide groove (19) is slidably connected to the inside of the slide groove (19).

3. The concrete screening device with a multi-stage screening structure according to claim 1, characterized in that: The movable end of the telescopic rod (12) is fixedly connected to the top of the fixed plate (14), and the threaded block (10) is arranged in a U shape.

4. The concrete screening device with a multi-stage screening structure according to claim 1, characterized in that: The outer surface of the reciprocating screw rod (7) is fixedly connected to the inner wall of the cam (23); a connecting plate (27) is provided at the bottom of the cam (23); the side wall of the connecting plate (27) is fixedly connected to the end of the cleaning rod (22); the other side of the connecting plate (27) is fixedly connected to one side of the moving block (25); the other side of the moving block (25) is slidably connected to the inner wall of the guide rail (24); and the side wall of the guide rail (24) is fixedly connected to one end of a return spring (26).

5. The concrete screening device with a multi-stage screening structure according to claim 4, characterized in that: One end of the return spring (26) away from the guide rail (24) is fixedly connected to the top of the moving block (25).

6. The concrete screening device with a multi-stage screening structure according to claim 4, characterized in that: The inner wall of the box body (1) is provided with a guide rail (24).

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