An adjustable-angle sand and gravel crushing vibrating screen

Abstract

This utility model relates to the field of vibrating screen technology, and in particular to an adjustable-angle sand and gravel crushing vibrating screen, including a rotating screen rod. A rotating shaft assembly is welded and fixed to the inner side of the rotating screen rod. The rotating shaft assembly is inserted into a fixed screen rod. The fixed screen rod includes a grooved rod, and a hook rod is slidably connected to the inner side of the grooved rod. A limit hole is opened at one end of the hook rod, and an insert is inserted into the inner side of the limit hole. A triangular block is slidably connected to the inner side of the grooved rod, and a stop rod is fixedly connected to the lower end of the triangular block. A spring is fixedly connected to the inner side of the grooved rod, and a moving block is fixedly connected to one end of the spring. A ball bearing is rolled on the side of the moving block near the triangular block. The rotating shaft assembly includes a steel shaft. In this utility model, the steel shaft is driven to rotate by the meshing of the hook rod and the rack, thereby changing the angle of the rotating screen rod, reducing the impact of materials on it, thus reducing the probability of damage and effectively extending the replacement cycle of the screen.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen technology, specifically to an adjustable angle sand and gravel crushing vibrating screen. Background Technology

[0002] A vibrating screen for sand and gravel crushing is a device used to screen materials in sand and gravel production. It generates high-frequency vibration through a vibrating motor, causing sand and gravel to be classified and screened according to particle size on the screen. A vibrating screen is usually composed of a screen box, screen, vibrating motor, vibration damping device and base. It can separate crushed sand and gravel into products of different specifications, such as coarse sand, fine sand and gravel, to meet the strict requirements of the construction industry for sand and gravel particle size. During the use of a sand and gravel crushing vibrating screen, increasing the screen surface inclination angle can accelerate the flow speed of materials on the screen surface and shorten the residence time, while decreasing the inclination angle slows down the flow rate and prolongs the residence time of materials on the screen surface, giving fine particles more opportunities to pass through the screen holes. However, when the tilt angle of the sand and gravel crushing vibrating screen is changed, the change in the tilt angle of the screen surface will lead to a change in the effective projected area of ​​the screen holes, and at the same time increase the probability of the material impacting the transverse screen wires of the screen, making the screen more prone to breakage. Therefore, an adjustable angle sand and gravel crushing vibrating screen is proposed to address the above problems. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable-angle sand and gravel crushing vibrating screen to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An adjustable-angle sand and gravel crushing vibrating screen includes a rotating screen rod. A rotating shaft assembly is welded and fixed to the inner side of the rotating screen rod. The rotating shaft assembly is inserted into a fixed screen rod. The fixed screen rod includes a grooved rod. A hook rod is slidably connected to the inner side of the grooved rod. A limit hole is opened at one end of the hook rod. A pin is inserted inside the limit hole. A triangular block is slidably connected to the inner side of the grooved rod. A stop rod is fixedly connected to the lower end of the triangular block. A spring is fixedly connected to the inner side of the grooved rod. A moving block is fixedly connected to one end of the spring. A ball bearing is rolled on the side of the moving block near the triangular block. The rotating shaft assembly includes a steel shaft. A chuck is fixedly connected through the steel shaft. A rack is fixedly connected to the outer side of the steel shaft. The grooved rod includes an assembly rod. A sliding groove is opened on the inner side of the assembly rod. A flexible dustproof rubber is bonded and fixed in the sliding groove. A through hole is opened on the inner side of the assembly rod. A triangular groove is opened on the inner side of the assembly rod. A strip groove is opened at the bottom end of the assembly rod. A guide groove is opened on the inner side of the assembly rod.

[0005] As a further optimization of this utility model, the flexible dustproof rubber sheet is provided in two sets, and the two sets of flexible dustproof rubber sheets are symmetrically distributed in the sliding groove. The outer side of the insertion post is in close contact with the flexible dustproof rubber sheet, and a part of the insertion post protrudes from the outer side of the sliding groove.

[0006] As a further optimization of this utility model, the included angle between the insert post and the hook rod is 90°, the outer side of the insert post is provided with a protrusion that matches the shape of the limiting hole, the bottom end of the insert post is arc-shaped, and the bottom end of the insert post abuts against the outer side of the triangular block.

[0007] As a further optimization of this utility model, the central axis of the spring and the central axis of the moving block are on the same straight line, two-thirds of the ball bearings are disposed in the moving block, and the side of the moving block near the triangular block is parallel to the side of the triangular block near the moving block.

[0008] As a further optimization of this utility model, the hook rod is in close contact with the inner side of the sliding groove, the hook rod is provided with teeth that mesh with the rack, the rack is provided with multiple racks, and the multiple racks are distributed in a ring array on the outer side of the steel shaft, the outer side of the triangular block is in close contact with the inner side of the triangular groove, and the abutment slides in the strip groove.

[0009] As a further optimization of this utility model, the following features are provided: two chucks are provided, each located on one side of the rack, and the chucks are engaged in the through hole. The shape of the chucks consists of two rings with different diameters.

[0010] As a further optimization of this utility model, the guide groove is shaped to match the moving block, the guide groove is connected to the triangular groove, the vertical cross-section of the triangular groove is a right triangle, and the hook side of the vertical cross-section of the triangular groove is parallel to the side of the triangular block closest to the moving block.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the meshing of the hook rod and the rack drives the steel shaft to rotate, thereby changing the angle of the rotating screen rod, reducing the impact of materials on it, thus reducing the probability of damage and effectively extending the replacement cycle of the screen. At the same time, the change in the angle of the rotating screen rod ensures that the effective projected area of ​​the screen holes changes in accordance with the filtration requirements when the screen surface is tilted. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the fixed screen rod structure of this utility model; Figure 3 This is a schematic diagram of the installation position structure of the rotating shaft assembly of this utility model; Figure 4 This is a cross-sectional view of the fixed screen rod of this utility model; Figure 5 This is a schematic diagram of the insertion post installation position structure of this utility model; Figure 6 This is a schematic diagram of the ball bearing mounting position structure of this utility model; Figure 7 This is a cross-sectional view of the grooved rod of this utility model; Figure 8 This is a schematic diagram of the rotating shaft assembly of this utility model.

[0013] In the diagram: 1. Rotating the sieve bar; 2. Fixed screen rod; 21. Grooved rod; 211. Assembly rod; 212. Sliding groove; 213. Flexible dustproof rubber sheet; 214. Through hole; 215. Triangular groove; 216. Strip groove; 217. Guide groove; 22. Hook rod; 23. Limiting hole; 24. Insert post; 25. Triangular block; 26. Support rod; 27. Spring; 28. Moving block; 29. ​​Ball bearing; 3. Shaft assembly; 31. Steel shaft; 32. Chuck; 33. Rack. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-8 This utility model provides a technical solution: An adjustable-angle sand and gravel crushing vibrating screen includes a rotating screen rod 1. A rotating shaft assembly 3 is welded and fixed to the inner side of the rotating screen rod 1. The rotating shaft assembly 3 is inserted into a fixed screen rod 2. The fixed screen rod 2 includes a grooved rod 21. A hook rod 22 is slidably connected to the inner side of the grooved rod 21. A limit hole 23 is opened at one end of the hook rod 22. A pin 24 is inserted into the inner side of the limit hole 23. A triangular block 25 is slidably connected to the inner side of the grooved rod 21. A stop rod 26 is fixedly connected to the lower end of the triangular block 25. A spring 27 is fixedly connected to the inner side of the grooved rod 21. A moving block 28 is fixedly connected to one end of the spring 27. A ball bearing 29 is rolled on the side of block 28 near the triangular block 25. The rotating shaft assembly 3 includes a steel shaft 31, through which a chuck 32 is fixedly connected. A rack 33 is fixedly connected to the outside of the steel shaft 31. The grooved rod 21 includes an assembly rod 211. A sliding groove 212 is opened on the inner side of the assembly rod 211. A flexible dustproof rubber 213 is bonded and fixed in the sliding groove 212. A through hole 214 is opened on the inner side of the assembly rod 211. A triangular groove 215 is opened on the inner side of the assembly rod 211. A strip groove 216 is opened at the bottom end of the assembly rod 211. A guide groove 217 is opened on the inner side of the assembly rod 211.

[0017] As a further implementation of this solution, two sets of flexible dustproof rubber sheets 213 are provided. The two sets of flexible dustproof rubber sheets 213 are symmetrically distributed in the sliding groove 212. The outer side of the insert post 24 is in close contact with the flexible dustproof rubber sheet 213, and a part of the insert post 24 protrudes from the outer side of the sliding groove 212. The outer side of the insert post 24 is in close contact with the flexible dustproof rubber sheet 213, which can effectively prevent dust from entering the assembly rod 211 through the sliding groove 212. The design of a part of the insert post 24 protruding from the outer side of the sliding groove 212 makes it convenient to pull the insert post 24. As a further implementation of this solution, the included angle between the insert post 24 and the hook rod 22 is 90°. The outer side of the insert post 24 is provided with a protrusion that matches the shape of the limiting hole 23. The bottom end of the insert post 24 is arc-shaped and abuts against the outer side of the triangular block 25. The arc shape of the bottom end of the insert post 24 makes it less likely for the triangular block 25 to break. When pressure is applied to the triangular block 25, the two can move relative to each other better. The protrusion on the outer side of the insert post 24 that matches the shape of the limiting hole 23 allows the insert post 24 to pass through the limiting hole 23 by rotating the protrusion to align with the limiting hole 23. As a further implementation of this solution, the central axis of spring 27 and the central axis of moving block 28 are on the same straight line. Two-thirds of the ball bearing 29 is set in moving block 28. The side of moving block 28 near triangular block 25 is parallel to the side of triangular block 25 near moving block 28. The coaxial design of spring 27 and moving block 28 allows the elastic force applied by spring 27 to moving block 28 to act more effectively on moving block 28. The design that two-thirds of the ball bearing 29 is set in moving block 28 ensures that a part of the ball bearing 29 protrudes outside moving block 28 without falling out of moving block 28. As a further implementation of this solution, the outer side of the hook rod 22 is in close contact with the inner side of the sliding groove 212. The hook rod 22 is provided with teeth that mesh with the rack 33. Multiple racks 33 are provided and distributed in a ring array on the outer side of the steel shaft 31. The outer side of the triangular block 25 is in close contact with the inner side of the triangular groove 215. The abutment rod 26 slides in the strip groove 216. The close contact between the outer side of the hook rod 22 and the inner side of the sliding groove 212 can prevent the hook rod 22 from shaking when it moves, so that the hook rod 22 can drive the rack 33 to move more accurately. By limiting the triangular block 25 and the abutment rod 26 through the triangular groove 215 and the strip groove 216, when the hook rod 22 drives the rack 33 to drive the steel shaft 31 to drive the rotating screen rod 1 to rotate, it can accurately contact the abutment rod 26 according to different rotation angles. As a further implementation of this solution, two chucks 32 are provided, which are respectively provided on both sides of the rack 33. The chucks 32 are engaged in the through hole 214. The shape of the chucks 32 consists of two rings with different diameters. The arrangement of the chucks 32 can prevent axial displacement or radial vibration when the steel shaft 31 rotates, thus making the rotation more stable. As a further implementation of this solution, the shape of the guide groove 217 is adapted to the moving block 28. The guide groove 217 is connected to the triangular groove 215. The vertical cross-section of the triangular groove 215 is a right triangle. The hook side of the vertical cross-section of the triangular groove 215 is parallel to the side of the triangular block 25 near the moving block 28. This arrangement allows the spring 27 installed in the guide groove 217 to apply elastic force to the moving block 28, thereby pushing the moving block 28 to slide from the guide groove 217 into the triangular groove 215, and causing the ball bearing 29 installed in the moving block 28 to contact the triangular block 25, pushing the triangular block 25 to slide in the triangular groove 215.

[0018] Working process: When the vibrating screen needs to increase the tilt angle to increase the screen surface inclination angle and accelerate the material flow speed on the screen surface, the hook rod 22 can be moved by pulling the insert 24. When the hook rod 22 moves, it will drive the meshing rack 33 to move through the teeth set on it. When the rack 33 moves, it will drive the steel shaft 31 to rotate. The chuck 32 can prevent the steel shaft 31 from axial displacement or radial vibration when rotating, thus making the rotation more stable. The rotation of the steel shaft 31 drives the rotating screen rod 1 to rotate and change the tilt angle, so that one side of the rotating screen rod 1 is held by the abutment rod 26. At the same time, the bottom end of the insert 24 abuts against the upper inclined surface of the triangular block 25. Rotating the insert 24 causes the protrusion set on the insert 24 to be misaligned with the limiting hole 23, thus making the insert 24 more stable. The slot is inserted into the hook rod 22. The rotating screen rod 1 cannot rotate upward due to gravity. The fixed position of the rotating screen rod 1 makes the position of the rotating shaft assembly 3 stable, thus making the rotating shaft assembly The relative position between the 3 and the hook 22 no longer changes. When the vibrating screen needs to restore the tilt angle, simply rotate the insert 24 so that the protrusion on the insert 24 enters the limiting hole 23. At this time, the bottom end of the insert 24 no longer abuts against the triangular block 25. The spring 27 set in the guide groove 217 applies elastic force to the moving block 28, causing the moving block 28 to slide from the guide groove 217 into the triangular groove 215, and causing the ball 29 installed in the moving block 28 to contact the triangular block 25, pushing the triangular block 25 to slide in the triangular groove 215. The sliding of the triangular block 25 drives the fixedly connected abutment 26 to slide in the strip groove 216 and push the rotating screen rod 1 to rotate, thereby causing the rotating shaft assembly 3 fixedly connected to the rotating screen rod 1 to rotate. The steel shaft 31 drives the chuck 32 to rotate, causing the hook 22 to reset. Throughout the above process, the outer side of the insert 24 is in close contact with the flexible dustproof rubber 213, which can effectively prevent dust from entering the assembly rod 211 through the sliding groove 212.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable-angle sand and gravel crushing vibrating screen, comprising a rotating screen rod (1), characterized in that: A rotating shaft assembly (3) is welded and fixed to the inner side of the rotating screen rod (1), and the rotating shaft assembly (3) is inserted into the fixed screen rod (2); The fixed screen rod (2) includes a grooved rod (21), a hook rod (22) is slidably connected to the inner side of the grooved rod (21), a limit hole (23) is opened at one end of the hook rod (22), an insert post (24) is inserted through the inner side of the limit hole (23), a triangular block (25) is slidably connected to the inner side of the grooved rod (21), a stop rod (26) is fixedly connected to the lower end of the triangular block (25), a spring (27) is fixedly connected to the inner side of the grooved rod (21), a moving block (28) is fixedly connected to one end of the spring (27), and a ball bearing (29) is rolled on the side of the moving block (28) near the triangular block (25); The rotating shaft assembly (3) includes a steel shaft (31), through which a chuck (32) is fixedly connected, and a rack (33) is fixedly connected to the outside of the steel shaft (31); The grooved rod (21) includes an assembly rod (211), a sliding groove (212) is provided on the inner side of the assembly rod (211), a flexible dustproof rubber sheet (213) is bonded and fixed in the sliding groove (212), a through hole (214) is provided on the inner side of the assembly rod (211), a triangular groove (215) is provided on the inner side of the assembly rod (211), a strip groove (216) is provided at the bottom end of the assembly rod (211), and a guide groove (217) is provided on the inner side of the assembly rod (211).

2. The adjustable-angle sand and gravel crushing vibrating screen according to claim 1, characterized in that: The flexible dustproof rubber sheet (213) is provided in two sets, and the two sets of flexible dustproof rubber sheets (213) are symmetrically distributed in the sliding groove (212). The outer side of the insert (24) is in close contact with the flexible dustproof rubber sheet (213), and a part of the insert (24) protrudes out of the outer side of the sliding groove (212).

3. The adjustable-angle sand and gravel crushing vibrating screen according to claim 1, characterized in that: The included angle between the insert (24) and the hook (22) is 90°. The outer side of the insert (24) is provided with a protrusion that matches the shape of the limiting hole (23). The bottom end of the insert (24) is arc-shaped and the bottom end of the insert (24) abuts against the outer side of the triangular block (25).

4. The adjustable-angle sand and gravel crushing vibrating screen according to claim 1, characterized in that: The central axis of the spring (27) and the central axis of the moving block (28) are on the same straight line. Two-thirds of the ball (29) is arranged in the moving block (28). The side of the moving block (28) near the triangular block (25) is parallel to the side of the triangular block (25) near the moving block (28).

5. The adjustable-angle sand and gravel crushing vibrating screen according to claim 1, characterized in that: The hook rod (22) is in close contact with the inner side of the sliding groove (212) on the outside. The hook rod (22) is provided with teeth and meshes with the rack (33). There are multiple racks (33), which are arranged in a ring array on the outside of the steel shaft (31). The outer side of the triangular block (25) is in close contact with the inner side of the triangular groove (215). The abutment rod (26) slides in the strip groove (216).

6. The adjustable-angle sand and gravel crushing vibrating screen according to claim 1, characterized in that: Two chucks (32) are provided, and the two chucks (32) are respectively located on both sides of the rack (33). The chucks (32) are engaged in the through hole (214). The shape of the chucks (32) consists of two rings with different diameters.

7. The adjustable-angle sand and gravel crushing vibrating screen according to claim 1, characterized in that: The opening shape of the guide groove (217) is adapted to the moving block (28). The guide groove (217) is connected to the triangular groove (215). The vertical cross-section of the triangular groove (215) is a right triangle. The hook edge of the vertical cross-section of the triangular groove (215) is parallel to the side of the triangular block (25) near the moving block (28).

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