Anti-blocking vibrating screen

Abstract

The utility model provides a kind of anti-blocking vibrating screen, comprising: the base (15) for supporting entire vibrating screen (1), the base (15) upper installation has sieve box (12), sieve box (12) top is equipped with sieve cover (11), sieve plate (13) is equipped between sieve box (12) with the sieve cover (11), sieve box (12) bottom, is equipped with the vibrating mechanism (14) for driving sieve box (12) and sieve plate (13) vibration;Between sieve plate (13) and the sieve cover (11), it is equipped with anti-blocking mechanism (2), and the anti-blocking mechanism (2) includes gravity block (21) that moves in defined area.

Description

Technical Field

[0001] This utility model relates to a vibrating screen, and more particularly to an anti-clogging vibrating screen. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Clogging of the screen plate channels is a common problem during the screening process of a vibrating screen, mainly caused by factors such as material characteristics, screen structure, and operating parameters. Specifically:

[0004] Material characteristics also play a role: If the material contains a large number of critical particles, flaky or needle-like materials close to the sieve aperture size, they can easily clog the mesh. Simultaneously, wet materials (moisture content higher than 5%) or sticky materials (such as those containing mud and sand) tend to agglomerate and adhere, leading to blockage.

[0005] Limitations of screen structure: When processing fine particles or wet materials, the effective opening rate of traditional fixed-mesh screens is easily reduced due to particle embedding (proximity effect) or accumulation (aggregation effect).

[0006] Operational and equipment factors: Insufficient screen tension, excessively small screen angle, uneven feeding, or mismatch between vibration parameters (such as amplitude) and material properties can all exacerbate clogging.

[0007] During screening using a vibrating screen, the screen channels are easily clogged by the material being processed as the screening time increases. Current methods typically involve disassembling and cleaning the vibrating screen, which reduces its efficiency and increases processing costs.

[0008] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0009] Purpose of the invention: The technical problem to be solved by this utility model is to provide an anti-clogging vibrating screen to address the shortcomings of the existing technology.

[0010] To solve the above-mentioned technical problems, this utility model discloses an anti-clogging vibrating screen, comprising:

[0011] A base is used to support the entire vibrating screen. A screen box is installed on the top of the base. A screen cover is installed on the top of the screen box. A screen plate is provided between the screen box and the screen cover. A vibration mechanism is provided at the bottom of the screen box to drive the screen box and the screen plate to vibrate.

[0012] An anti-clogging mechanism is provided between the sieve plate and the sieve cover, and the anti-clogging mechanism includes a gravity block that moves within a defined area.

[0013] Furthermore, the top of the screen cover is fixed with a feed inlet and an exhaust outlet, the side is provided with a nitrogen inlet and a first discharge outlet, and the bottom is provided with a lower sealing frame for sealing connection with the edge of the screen plate.

[0014] Furthermore, a second discharge port is fixed on the side of the screen box, the bottom of the screen box is inclined, and an upper sealing frame is provided on the top of the screen box for sealing connection with the edge of the screen plate. The lower sealing frame and the upper sealing frame are sealed together.

[0015] Furthermore, the sieve plate is provided with uniformly distributed sieve holes, and the outer diameter of the gravity block is larger than the inner diameter of the sieve holes.

[0016] Furthermore, the vibration mechanism includes:

[0017] A vibrating guide plate is fixedly installed on the outer wall of the screen box, and the vibrating guide plate is fixedly connected to the output end of the vibrating motor.

[0018] Furthermore, the base includes:

[0019] An upper support column is fixedly connected to the edge of the upper sealing frame. The upper support column is elastically connected to the lower support column through a shock-absorbing spring. A fixing rod is fixed between the lower support columns.

[0020] Furthermore, the anti-clogging mechanism also includes:

[0021] A limiting frame is horizontally set in the screen cover, and a limiting strip is provided inside the limiting frame to limit the movement range of the gravity block; the four corners of the bottom of the limiting frame are vertically provided with limiting frame supports;

[0022] The screen cover is provided with limiting grooves at its four corners, the lower sealing frame is provided with first limiting holes at its four corners, the screen plate is provided with square limiting grooves at its four corners, and the upper sealing frame is provided with second limiting holes at its four corners; the limiting frame support is sequentially inserted into the limiting groove, the first limiting hole, the square limiting groove, and the second limiting hole.

[0023] A sealing strip is provided on the outer side of the sieve plate away from the limiting frame.

[0024] Furthermore, the anti-clogging mechanism also includes:

[0025] A baffle is disposed below the screen cover, extending toward the screen plate. The distance between the bottom of the baffle and the top of the screen plate is less than the outer diameter of the gravity block and greater than the maximum outer diameter of the material being screened.

[0026] Furthermore, the gravity block is made of an elastic material.

[0027] Furthermore, the gravity block is made of polyurethane.

[0028] Beneficial effects:

[0029] 1. This utility model solves the problem of clogging in vibrating screens by setting an anti-clogging structure inside the vibrating screen, thereby achieving the goal of long-term operation.

[0030] 2. The vibrating screen designed in this utility model can reduce the number of times the vibrating screen is disassembled and inspected, thus reducing maintenance costs. It can achieve continuous operation and reduce labor input. Attached Figure Description

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0033] Figure 2 This is a schematic diagram of the overall structure of one embodiment.

[0034] Figure 3 for Figure 2 A magnified view of a portion of the image.

[0035] Figure 4 This is a schematic diagram of the limiting groove and the first limiting hole in the embodiment.

[0036] Figure 5 This is a top view of the upper sealing frame.

[0037] Figure 6 This is a top view of the sieve plate.

[0038] Figure 7 This is a top view of the limit frame.

[0039] Figure 8 This is a side view of the limit frame.

[0040] Figure 9 This is a schematic diagram of the overall structure of another embodiment.

[0041] In the diagram, 1 is a vibrating screen, 11 is a screen cover, 12 is a screen box, 13 is a screen plate, 14 is a vibrating mechanism, and 15 is a base; 2 is an anti-clogging mechanism, and 21 is a gravity block; 111 is a feed inlet, 112 is an exhaust outlet, 113 is a nitrogen inlet, 114 is the first discharge outlet, 115 is a lower sealing frame, 1151 is the first limiting hole, and 116 is a limiting groove; 121 is the second discharge outlet, 122 is the upper sealing frame, and 1221 is the second limiting hole; 131 is a screen hole, 132 is a square limiting groove, and 133 is a sealing strip; 141 is a vibrating motor, 142 is a vibrating guide plate, 151 is an upper support column, 152 is a shock-absorbing spring, 153 is a lower support column, and 154 is a fixing rod; 22 is a limiting frame, 221 is a limiting strip, 222 is a limiting frame support column, and 23 is a baffle. Detailed Implementation

[0042] This application designs an anti-clogging vibrating screen. For example... Figure 1 As shown, movable gravity blocks 21 are set inside the vibrating screen 1, and the screen box 12 of the vibrating screen 1 is divided into sections to ensure that each section of the screen box 12 has gravity blocks 21 acting on the screen plate 13. This prevents the gravity blocks 21 from moving in the same direction during vibration, which would cause some areas to be without gravity blocks and thus cause the vibrating screen to become blocked.

[0043] The gravity block 21 in this application is preferably spherical, but not limited to spherical. It can be any object with a three-dimensional shape, such as a cube, column, cone, or irregular three-dimensional shape.

[0044] The anti-clogging vibrating screen consists of four parts: screen cover 11, screen box 12, screen plate 13, anti-clogging mechanism 2, vibration mechanism 14, and base 15. The screen box 12 is fixedly mounted on the top of the base 15, the screen plate 13 is installed on the top of the screen box 12, the screen cover 11 is installed on the top of the screen plate 13, and the vibration mechanism 14 is fixedly connected to the bottom of the screen box 12.

[0045] The top of the screen cover 11 is fixedly provided with a feed inlet 111 and an exhaust outlet 112, and the side is provided with a nitrogen inlet 113 and a first discharge outlet 114. The bottom of the screen cover 11 is provided with a lower sealing frame 115.

[0046] The screen box 12 has a second discharge port 121 fixedly installed on the side, the lower part of the screen box is inclined, and the upper part of the screen box is an upper sealing frame 122.

[0047] The sieve plate 13 is provided with evenly distributed sieve holes 131, and square limiting grooves 132 are left at the four corners of the sieve plate 13.

[0048] like Figure 2 As shown, in one embodiment, the anti-blocking mechanism 2 includes a limiting frame 22 and a gravity block 21, as... Figure 7 As shown, the limiting frame 22 has multiple limiting strips 221 inside, such as... Figure 8As shown, the four corners of the lower part of the limiting frame 22 are provided with limiting frame supports 222.

[0049] like Figure 3 The limit frame support 222 shown is inserted sequentially into the limit grooves 116 set at the four corners of the screen cover 11 (as shown). Figure 4 As shown), the first limiting holes 1151 are provided at the four corners of the lower sealing frame 115, and the square limiting grooves 132 are provided at the four corners of the sieve plate 13. Figure 6 As shown), finally insert it into the second limiting hole 1221 of the sealing frame 122 on the sieve box 12 (as shown). Figure 5 (As shown).

[0050] A sealing strip 133 is provided on the outer side of the sieve plate 13 away from the limiting frame 22.

[0051] like Figure 9 As shown, in another embodiment, the anti-blocking mechanism 2 includes a baffle 23 and a gravity block 21. The baffle 23 is disposed below the screen cover 11. The length of the baffle 23 is set according to the diameter of the gravity block 21 and the outer diameter of the material. The height left below the baffle 23 is less than the diameter of the gravity block 21 and greater than the outer diameter of the material.

[0052] The gravity block 21 is required to have a certain degree of elasticity to prevent damage to the sieve plate 13. The gravity block 21 can be made of different materials depending on the characteristics of the product. For example, for granular silica products with high cleanliness requirements, it can be made of polyurethane.

[0053] The vibration mechanism 14 includes a vibration motor 141 and a vibration guide plate 142. The vibration motor 141 is fixedly installed on the lower part of the vibration guide plate 142, and the upper part of the vibration guide plate 142 is fixedly connected to the lower part of the screen box 12.

[0054] The base 15 includes an upper support column 151, a shock-absorbing spring 152, a lower support column 153, and a fixing rod 154. The upper part of the upper support column 151 is fixedly connected to the lower edge of the upper sealing frame 122, and the upper support column 151 and the lower support column 153 are fixedly connected by the shock-absorbing spring 152. The four lower support columns 153 are connected by the fixing rod 154.

[0055] When the vibrating screen is working, the gravity block 21 bounces on the screen plate 13. When it contacts the screen plate 13, the gravity block 21 collides with the screen plate 13, giving the blocking particles in the screen hole 131 a downward force, so that the blocking particles can pass through the screen hole 131 smoothly, thus achieving the purpose of preventing blockage.

[0056] This utility model provides a concept and method for preventing clogging of a vibrating screen. There are many methods and approaches to implement this technical solution, and the above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A clog-resistant vibrating screen, characterized in that, include: A base (15) is used to support the entire vibrating screen (1). A screen box (12) is installed above the base (15). A screen cover (11) is installed on the top of the screen box (12). A screen plate (13) is provided between the screen box (12) and the screen cover (11). A vibration mechanism (14) is provided at the bottom of the screen box (12) to drive the screen box (12) and the screen plate (13) to vibrate. An anti-clogging mechanism (2) is provided between the sieve plate (13) and the sieve cover (11), the anti-clogging mechanism (2) including a gravity block (21) that moves within a defined area.

2. The anti-clogging vibrating screen according to claim 1, characterized in that, The top of the screen cover (11) is fixed with a feed inlet (111) and an exhaust outlet (112), the side is provided with a nitrogen inlet (113) and a first discharge outlet (114), and the bottom is provided with a lower sealing frame (115) for sealing connection with the edge of the screen plate (13).

3. The anti-clogging vibrating screen according to claim 2, characterized in that, The screen box (12) is fixedly provided with a second discharge port (121) on the side. The bottom of the screen box (12) is inclined. The top of the screen box (12) is provided with an upper sealing frame (122) for sealing connection with the edge of the screen plate (13). The lower sealing frame (115) and the upper sealing frame (122) are sealed together.

4. The anti-clogging vibrating screen according to claim 3, characterized in that, The sieve plate (13) is provided with uniformly distributed sieve holes (131), and the outer diameter of the gravity block (21) is larger than the inner diameter of the sieve holes (131).

5. The anti-clogging vibrating screen according to claim 4, characterized in that, The vibration mechanism (14) includes: A vibrating guide plate (142) is fixedly installed on the outer wall of the screen box (12), and the vibrating guide plate (142) is fixedly connected to the output end of the vibrating motor (141).

6. The anti-clogging vibrating screen according to claim 5, characterized in that, The base (15) includes: An upper support column (151) is fixedly connected to the edge of the upper sealing frame (122). The upper support column (151) is elastically connected to the lower support column (153) through a shock-absorbing spring (152). A fixing rod (154) is fixed between the lower support columns (153).

7. The anti-clogging vibrating screen according to claim 6, characterized in that, The anti-clogging mechanism (2) further includes: A limiting frame (22) is horizontally set in the screen cover (11), and a limiting strip (221) is provided in the limiting frame (22) to limit the movement range of the gravity block (21); the four corners of the bottom of the limiting frame (22) are vertically provided with limiting frame support pillars (222). The screen cover (11) has a limiting groove (116) at its four corners, the lower sealing frame (115) has a first limiting hole (1151) at its four corners, the screen plate (13) has a square limiting groove (132) at its four corners, and the upper sealing frame (122) has a second limiting hole (1221) at its four corners; the limiting frame support (222) is sequentially inserted into the limiting groove (116), the first limiting hole (1151), the square limiting groove (132), and the second limiting hole (1221); A sealing strip (133) is provided on the outer side of the sieve plate (13) away from the limiting frame (22).

8. The anti-clogging vibrating screen according to claim 6, characterized in that, The anti-clogging mechanism (2) further includes: A baffle (23) is provided below the screen cover (11). The baffle (23) extends toward the screen plate (13). The distance between the bottom of the baffle (23) and the top of the screen plate (13) is less than the outer diameter of the gravity block (21) and greater than the maximum outer diameter of the material being screened.

9. The anti-clogging vibrating screen according to claim 1, characterized in that, The gravity block (21) is made of elastic material.

10. The anti-clogging vibrating screen according to claim 1, characterized in that, The gravity block (21) is made of polyurethane.

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