A vibrating screening machine

Abstract

The application relates to a vibrating screening machine, belonging to the sand and gravel screening technical field, which comprises a machine body, a feeding hopper fixedly arranged on the machine body, a plurality of screen meshes fixedly and obliquely arranged in the machine body, a plurality of partitions fixedly arranged in the machine body, the partitions being arranged between adjacent screen meshes, the top end of the partition being connected with the lowest end of the high screen mesh, the bottom end of the partition being connected with the highest end of the low screen mesh, a gate shaft rotatably arranged on the machine body, a gate plate fixedly arranged on the gate shaft, a torsional spring arranged at the rotating connection position of the gate shaft and the machine body, the torsional spring driving the gate plate to abut against the partition, an opening gate assembly arranged on the machine body and driving the gate shaft to rotate in sequence, and a plurality of discharging hoppers fixedly arranged in the machine body and corresponding arranged below the screen meshes. The application has the effect of increasing the interval of the final flowing positions of various sands and gravels, facilitating the placement and movement of the collecting tools.

Description

Technical Field

[0001] This invention relates to the field of sand and gravel screening technology, and in particular to a vibrating screen. Background Technology

[0002] The engineering field requires a large amount of sand and gravel. The particle size of sand and gravel can usually be divided into coarse sand, medium sand, fine sand and silt. Different projects have different specifications for sand and gravel.

[0003] A vibrating screen is designed in the related technology. It includes a machine body with multiple layers of screens arranged at an incline inside the machine body. Each layer of screen has a different aperture. A motor is installed on the side wall of the machine body to drive the machine body to vibrate. When screening sand, the mixed sand and gravel are poured into the top layer of screen. The motor drives the whole machine body to vibrate. After being screened layer by layer by the screen, the mixed sand and gravel are classified on each layer of screen and flow out from the end of the machine body along the screen.

[0004] In the process of implementing this application, it was found that the technology has at least the following problems: all the sand and gravel are concentrated at the end of the machine body and flow out. When collecting the sand and gravel that has been sorted, all the collection tools are also concentrated at the end of the machine body to collect the sand and gravel, making the collection tools crowded and difficult to move. Summary of the Invention

[0005] In order to increase the spacing between the final outflow points of various types of gravel and facilitate the placement and movement of collection tools, this application provides a vibrating screen.

[0006] The vibrating screen provided in this application adopts the following technical solution:

[0007] A vibrating screen includes a body, a feed hopper fixedly mounted on the body, a plurality of screens fixedly and inclinedly mounted inside the body, a plurality of partitions fixedly mounted inside the body, the partitions being arranged between adjacent screens, the top of the partitions being connected to the lowest end of the higher screens, and the bottom of the partitions being connected to the highest end of the lower screens, a gate shaft rotatably mounted on the body, a gate plate fixedly mounted on the gate shaft, a torsion spring being arranged at the rotatable connection between the gate shaft and the body, the torsion spring driving the gate plate to abut against the partitions, an opening assembly being provided on the body to drive the gate shaft to rotate sequentially, and a plurality of discharge hoppers fixedly mounted inside the body, the discharge hoppers being correspondingly arranged below the screens.

[0008] By adopting the above technical solution, mixed gravel is poured into the machine body from the feed hopper. The mixed gravel falls onto the highest screen. The torsion spring drives the gate plate to abut against the partition plate, isolating each screen step by step, thus preventing the mixed gravel from directly entering another screen. After a period of screening, the screen will screen out as much gravel as possible that meets the requirements. The gate opening component drives the gate shaft to rotate from low to high in sequence. The gate plate and partition plate disengage from the abutting state in sequence, so that the screen first releases the gravel into the next screen, and then introduces the gravel from the previous screen. The gravel screened by each screen falls into the corresponding discharge hopper. In this process, the screen screens screen the gravel step by step rather than layer by layer, so that the screened gravel falls directly into the corresponding discharge hopper below, and the gravel of various specifications is discharged from the bottom of the machine body, thereby increasing the spacing between the final discharge positions of various specifications of gravel, which facilitates the placement and movement of collection tools.

[0009] Preferably, the gate opening assembly includes a sprocket, a transmission chain, a moving block, an abutment block, and a deflection rod. The gate shaft passes through one side wall of the machine body and is fixedly connected to the deflection rod. A set of sprockets is rotatably arranged on the side wall of the machine body. The transmission chain is simultaneously engaged with a set of sprockets. The moving block is fixedly arranged on the side wall of the transmission chain. The abutment block is fixedly arranged on the moving block. The abutment block can abut against the deflection rod and slide.

[0010] By adopting the above technical solution, when it is necessary to drive the gate shaft to rotate sequentially from low to high, the sprocket is driven to rotate, the sprocket drives the transmission chain to move, and the moving block makes a directional circular motion along the movement trajectory of the transmission chain. When the moving block moves to the position of the deflection rod, the abutting block on the moving block abuts against the deflection rod. As the moving block continues to move, the abutting block slides on the surface of the deflection rod, and the deflection rod deflects accordingly, thereby driving the gate shaft to rotate. After the abutting block disengages from the deflection rod, the torsion spring drives the gate plate to abut against the partition plate again. Then the abutting block abuts against the remaining abutting deflection rods in sequence with the moving block, driving the gate shaft to rotate sequentially from low to high.

[0011] Preferably, a guide rail is fixedly installed on the side wall of the machine body, and the moving block slides within the guide rail.

[0012] By adopting the above technical solution, the moving block moves with the chain on the one hand, and is constrained by the guide rail on the other hand, which prevents the moving block from shaking at will, thereby improving the stability of the movement of the moving block and the contact block.

[0013] Preferably, the movable block is provided with a rolling wheel, which is rolled within the guide rail.

[0014] By adopting the above technical solution, the sliding block slides within the guide rail via the rolling wheel, thereby reducing friction during the sliding process and thus reducing the burden on the transmission chain.

[0015] Preferably, the outer contour of the abutting block includes an opening section, a holding section, and a closing section. The opening section and the holding section are set as planes. The holding section is connected to the end of the opening section at an angle. The closing section is set at the other end of the holding section. The closing section is an arc surface that deflects in the direction of the moving block.

[0016] By adopting the above technical solution, when the deflecting rod abuts against the abutting block, the abutting block first contacts the opening section. As the moving block continues to move, the deflecting rod overcomes the elastic force of the torsion spring and rotates, causing the gate to open. When the deflecting rod disengages from the gate section, it abuts against the holding section. At this time, the deflecting rod remains stable and stationary, keeping the gate open for a period of time, increasing the opening time of the gate, and allowing the gravel enough time to flow out. When the deflecting rod disengages from the holding section, it abuts against the closing section, causing the deflecting rod to slowly rotate back, so that the gate closes smoothly.

[0017] Preferably, the angled connection between the opening section and the holding section is provided with a transition arc.

[0018] By adopting the above technical solution, during the transition process of the deflector rod from the state of contact with the opening section to the state of contact with the holding section, the deflector rod contacts the transition arc, thereby making the movement process of the deflector rod more stable.

[0019] Preferably, a deflection wheel is rotatably provided at the end of the deflection block.

[0020] By adopting the above technical solution, the deflection wheel abuts against the abutment block, and the direct sliding is changed into rolling, thereby reducing the wear caused by the relative sliding process.

[0021] Preferably, the outer surface of the deflection wheel is provided with a rubber layer.

[0022] By adopting the above technical solutions, the impact damage caused by the initial contact between the deflector wheel and the contact block or by factors such as machine vibration can be reduced.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By setting up a machine body, feed hopper, dry baffle, screen, gate shaft, gate plate, gate opening assembly, and discharge hopper, various sizes of sand and gravel are discharged from the bottom of the machine body respectively, thereby increasing the spacing between the final discharge positions of various sizes of sand and gravel, which facilitates the placement and movement of collection tools;

[0025] 2. By setting up sprockets, transmission chains, moving blocks, abutment blocks, deflection rods, guide rails, and rolling wheels, the gate shaft is driven to rotate sequentially from low to high. The screen first releases the sand and gravel into the next level screen, and then introduces the sand and gravel from the previous level screen.

[0026] 3. By setting up opening section, holding section, closing section, transition arc, and deflection wheel, the opening time of the gate is increased, allowing the sand and gravel enough time to flow out, making the opening, holding, and closing process of the gate smoother. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of a vibrating screen provided in the embodiments of this application.

[0028] Figure 2 yes Figure 1 Enlarged view of section A.

[0029] Figure 3 This is a cross-sectional structural diagram of a vibrating screen provided in an embodiment of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Machine body; 11. Feed hopper; 12. Baffle plate; 13. Screen; 14. Gate shaft; 141. Gate plate; 15. Discharge hopper; 16. Deflection rod; 161. Deflection wheel; 17. Guide rail; 2. Gate opening assembly; 21. Sprocket; 22. Transmission chain; 23. Moving block; 24. Abutment block; 241. Gate opening section; 242. Holding section; 243. Transition arc; 244. Gate closing section; 25. Rolling wheel. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a vibrating screen. (Refer to...) Figures 1 to 3 The system includes a body 1, with a feed hopper 11 fixedly mounted on top of the body 1, connecting the inside and outside of the body 1. Several screens 13 are fixedly mounted inside the body 1, all tilted in the same direction. Several partitions 12 are fixedly mounted inside the body 1, positioned between adjacent screens 13. The top of each partition 12 is connected to the lowest point of a higher screen 13, and the bottom of each partition 12 is connected to the highest point of a lower screen 13. The aperture of the higher screen 13 is smaller than that of the lower screen 13. The feed hopper 11 is positioned directly above the highest screen 13. A gate shaft 14 is rotatably mounted on the body 1, with a gate plate 141 fixedly mounted on the gate shaft 14. A torsion spring is located at the rotatable connection between the gate shaft 14 and the body 1, causing the gate plate 141 to abut against the partitions 12. The machine body 1 is equipped with a gate opening assembly 2 that drives the gate shaft 14 to rotate sequentially. Several discharge hoppers 15 are fixedly installed inside the machine body 1, and the discharge hoppers 15 are located below the screen 13 and correspond one-to-one with the screen 13.

[0033] Reference Figures 1 to 3The mixed gravel is poured into the machine body 1 through the feed hopper 11. The mixed gravel falls onto the highest screen 13, where the gate 141 blocks it. After a period of screening, gravel smaller than the mesh size of the screen 13 flows directly out through the discharge hopper 15 below the screen 13, while the remaining gravel remains on the screen 13. The gate opening assembly 2 drives the gate shaft 14 to rotate, opening the gate 141, allowing the remaining gravel to flow onto the next screen 13. In this way, the gravel is screened step by step according to its particle size from small to large, and various sizes of gravel are discharged separately from the bottom of the machine body 1, thereby increasing the spacing between the final discharge points of different sizes of gravel, facilitating the placement and movement of collection tools.

[0034] To ensure the smooth opening and closing of the gate 141, refer to... Figures 1 to 3 The gate opening assembly 2 includes a sprocket 21, a transmission chain 22, a moving block 23, an abutment block 24, and a deflection rod 16. The gate shaft 14 passes through one side wall of the machine body 1 and is fixedly connected to the deflection rod 16. A deflection wheel 161 is rotatably mounted at the end of the deflection rod 16, and the outer surface of the deflection wheel 161 is covered with a rubber layer. A set of sprockets 21 is rotatably mounted on the side wall of the machine body 1. A motor that drives the machine body 1 to vibrate is mounted on the outer wall of the machine body 1. The transmission chain 22 is tensioned by a set of sprockets 21 and meshes with them, surrounding all the deflection rods 16. A guide rail 17 is fixedly mounted on the side wall of the machine body 1. A rolling wheel 25 is rotatably mounted on the moving block 23, rolling within the guide rail 17. The moving block 23 is fixedly mounted on the side wall of one link of the transmission chain 22, and the abutment block 24 is fixedly mounted on the moving block 23, abutting against the deflection wheel 161. The outer contour of the abutment block 24 includes an opening section 241, a holding section 242, and a closing section 244. The opening section 241 and the holding section 242 are straight and connected at the ends at an angle. A transition arc 243 is provided at the angle between the opening section 241 and the holding section 242. The opening section 241 is connected to the moving block 23. The closing section 244 is an arc surface that deflects towards the moving block 23 and is connected to the holding section 242.

[0035] Reference Figures 1 to 3The motor drives the sprocket 21 to rotate, and the chain drives the moving block 23 to make a directional circular motion along the movement trajectory of the guide rail 17. When the moving block 23 moves to the position of the deflecting rod 16, the opening section 241 of the abutment block 24 abuts against the deflecting wheel 161. The deflecting wheel 161 drives the deflecting rod 16 to deflect, and opens the gate 141 through the gate shaft 14. As the moving block 23 continues to move, the deflecting wheel 161 passes through the arc 243 and abuts against the holding section 242. At this time, the deflecting rod 16 remains deflected, and the gate 141 remains open. Finally, the deflecting wheel 161 abuts against the closing section 244, causing the gate 141 to close slowly. After the abutment block 24 disengages from the deflecting rod 16, the abutment block 24 continues to abut against the remaining deflecting wheels 161 in sequence with the moving block 23, thereby driving the gate shaft 14 to rotate in sequence, thus controlling the smooth opening and closing of the gate 141.

[0036] The implementation principle of a vibrating screen according to an embodiment of this application is as follows: Mixed sand and gravel are poured into the machine body 1 from the feed hopper 11. The mixed sand and gravel fall onto the screen 13 at the highest point. The gate 141 blocks the mixed sand and gravel. After a period of screening, the sand and gravel smaller than the aperture of the screen 13 flows directly out from the discharge hopper 15 below the screen 13, while the remaining sand and gravel remain on the screen 13. The motor drives the sprocket 21 to rotate, and the chain drives the moving block 23 to make directional circular motion along the movement trajectory of the guide rail 17. When the moving block 23 moves to the position of the deflection rod 16, the opening section 241 of the abutment block 24 abuts against the deflection wheel 161. The deflection wheel 161 drives the deflection rod 16 to deflect, and the gate 141 is opened through the gate shaft 14. As the moving block 23 sequentially contacts the remaining high-level deflecting wheels 161, it drives the gate shaft 14 to rotate sequentially from low to high. This causes one screen 13 to first release the gravel into the next level screen 13, and then introduce the gravel from the previous level screen 13. The remaining gravel flows onto the next level screen 13. In this way, the gravel is screened step by step according to particle size from small to large, and various sizes of gravel are discharged separately from the bottom of the machine body 1, thereby increasing the spacing between the final outlet positions of various sizes of gravel, which facilitates the placement and movement of collection tools.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vibrating screen, comprising a body (1), wherein a feed hopper (11) is fixedly disposed on the body (1), characterized in that: The machine body (1) is fixedly and inclinedly provided with a number of screens (13). The machine body (1) is also fixedly provided with a number of partitions (12). The partitions (12) are arranged between adjacent screens (13). The top of the partition (12) is connected to the lowest end of the higher screen (13), and the bottom of the partition (12) is connected to the highest end of the lower screen (13). A gate shaft (14) is rotatably provided on the machine body (1). A gate plate (141) is fixedly provided on the gate shaft (14). A torsion spring is provided at the rotatable connection between the gate shaft (14) and the machine body (1). The torsion spring drives the gate plate (141) to abut against the partition (12). The machine body (1) is provided with a gate opening assembly (2) that drives the gate shaft (14) to rotate sequentially. Several discharge hoppers (15) are fixedly installed inside the body (1), and the discharge hoppers (15) are correspondingly installed below the screen (13); the gate opening assembly (2) includes a sprocket (21), a transmission chain (22), a moving block (23), an abutment block (24), and a deflection rod (16). The gate shaft (14) passes through one side wall of the machine body (1) and is fixedly connected to the deflection rod (16). A set of sprockets (21) is rotatably installed on the side wall of the machine body (1). The transmission chain (22) is simultaneously engaged with a set of sprockets (21). The moving block (23) is fixedly installed on the side wall of the transmission chain (22). The abutment block (24) is fixedly installed on the moving block (23). The abutment block (24) can abut against and slide against the deflection rod (16).

2. The vibrating screen according to claim 1, characterized in that: A guide rail (17) is fixedly installed on the side wall of the body (1), and the moving block (23) slides within the guide rail (17).

3. A vibrating screen according to claim 2, characterized in that: The movable block (23) is rotatably provided with a rolling wheel (25), which is rolled within the guide rail (17).

4. A vibrating screen according to claim 1, characterized in that: The outer contour of the abutment block (24) includes an opening section (241), a holding section (242), and a closing section (244). The opening section (241) and the holding section (242) are set as planes. The holding section (242) is connected to the end of the opening section at an angle. The closing section (244) is set at the other end of the holding section (242). The closing section (244) is an arc surface that deflects towards the moving block (23).

5. A vibrating screen according to claim 4, characterized in that: The angled connection between the opening section (241) and the holding section (242) is provided with a transition arc (243).

6. A vibrating screen according to claim 1, characterized in that: The deflection rod (16) has a deflection wheel (161) rotatably mounted at its end, and the deflection wheel (161) can abut against the abutment block (24).

7. A vibrating screen according to claim 6, characterized in that: The outer surface of the deflection wheel (161) is provided with a rubber layer.

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