Screening device with filter screen convenient to replace

Abstract

The screening device comprises a supporting frame, first sliding grooves, a screening net, a limiting plate and a positioning assembly, the screening net is arranged in the supporting frame, first sliding plates are arranged on the two sides of the bottom of the screening net in the width direction respectively, and the first sliding grooves are formed in the positions, corresponding to the first sliding plates, in the supporting frame; limiting blocks are distributed on the upper portion of the top end of the screening net, limiting plates are arranged at the positions, corresponding to the limiting blocks, in the supporting frame, limiting grooves I are formed in the positions, located on the limiting blocks, of the limiting plates, and the limiting blocks are slidably inserted into the limiting grooves I. Positioning hooks are arranged on the two sides of the bottom of the bottom end of the screening net. Limiting and fixing of the screening net are relieved, rapid dismounting and mounting of the screening net are achieved, the replacement and maintenance efficiency is improved, and the bone meal use efficiency of a building construction site is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, and particularly relates to a screening device facilitating the replacement of a filter screen. Background Art

[0002] In construction projects, construction aggregates are widely used in the preparation of concrete, including the production of building blocks, mortar, etc. Aggregates play a role in bearing and transferring loads in concrete, and can also fill and support structures to ensure the stability and safety of buildings. In the production process of construction aggregates, screening is a crucial link. It involves the pre-screening of raw materials and the screening of finished stone materials. The pre-screening of raw materials is mainly to avoid excessive stone powder content in the finished stone materials caused by repeated crushing of stones, which affects the quality of the finished products.

[0003] Publication (Announcement) No.: CN219581085U discloses a screening device for recycling construction aggregates, which relates to the technical field of construction waste treatment, and specifically is a screening device for recycling construction aggregates, including a screening barrel. Three layers of screening nets are installed inside the screening barrel. A driving motor I is arranged above the screening barrel. The bottom of the output shaft of the driving motor I is connected with a shaft rod. A cross bar is fixedly connected to the outside of the shaft rod. A top rod is connected to the top of the cross bar. A scraping plate is movably sleeved on the outside of the shaft rod.

[0004] For the fine division of construction aggregates, the screening net is severely worn during high-frequency use, resulting in a high replacement frequency of the screening net. However, in the prior art, the replacement efficiency of the screening net is low and the difficulty is high. It takes a long time to replace and process the screening net, which affects the efficiency of the fine division of construction aggregates and the use of aggregate screening.

[0005] Therefore, there is a need to provide a screening device facilitating the replacement of a filter screen. Summary of the Utility Model

[0006] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a screening device facilitating the replacement of a filter screen, aiming to solve the technical problems of low replacement efficiency and high difficulty of the screening net, and the need to spend a long time to replace and process the screening net.

[0007] To achieve the above object, the utility model is realized through the following technical solutions: A screening device facilitating the replacement of a filter screen, comprising a support frame, a first chute, a screening net, a limiting plate, and a positioning assembly. A screening net is arranged inside the support frame. On both sides of the bottom of the screening net in the width direction, there are respectively arranged first sliding plates. Inside the support frame, at positions corresponding to the first sliding plates, there are arranged first chutes. The first sliding plates are slidably installed with the first chutes. On the upper part of the top of the screening net, there are distributed limiting blocks. Inside the support frame, at positions corresponding to the limiting blocks, there are arranged limiting plates. At the positions of the limiting blocks, the limiting plates are provided with first limiting grooves. The limiting blocks are slidably inserted into the first limiting grooves. On both sides of the bottom of the bottom end of the screening net, there are arranged positioning hooks. The positioning assembly includes a first clamping plate and a first spring assembly. The first clamping plate is arranged on one side of the positioning hook close to the inner wall of the support frame. The first clamping plate is provided with a positioning groove matching the shape of the positioning hook. The positioning groove enables the positioning hook to be freely disassembled or installed in a positioned manner. On the side of the first clamping plate away from the positioning hook, a fixed shaft is fixedly arranged. The fixed shaft penetrates through the support frame, and a through hole is provided at the penetration position of the support frame for the fixed shaft. The through hole allows the fixed shaft to be pulled out and retracted. At the end of the fixed shaft penetrating out of the support frame, there is an operation plate. The circumference of the operation plate is fixedly installed with the outside of the support frame through the first spring assembly. Through the cooperation of the operation plate and the first spring assembly, by pulling the fixed shaft back and forth, the first clamping plate positions or releases the positioning hook.

[0008] Preferably, at the four corners of the circumference of the operation plate, there are arranged first spring assemblies. The first spring assembly includes an inner cylinder and an outer cylinder. The top end of the inner cylinder is fixedly installed with the outside of the support frame. The bottom end of the inner cylinder is sleeved inside the outer cylinder, and the inner cylinder and the outer cylinder are fixed by a spring. The spring is sleeved and installed inside the inner cylinder and the outer cylinder. The end of the outer cylinder away from the inner cylinder is fixedly installed with the operation plate.

[0009] Preferably, a diversion plate is arranged at the bottom of the screening net. The diversion plate is fixedly installed inside the support frame.

[0010] Preferably, the side of the screening net away from the positioning assembly is arranged to incline downward.

[0011] Preferably, the side of the screening net close to the positioning assembly is arranged to incline downward.

[0012] In summary, the utility model provides a screening device facilitating the replacement of a filter screen. In the initial state, through the elastic action of the first spring assembly, the positioning groove on the first clamping plate limits and clamps the positioning hook to maintain the fixed and limited installation of the screening net. When disassembling the screening net, by pulling the operation plate, through the elastic action of the first spring assembly, the positioning groove separates from the positioning hook in a limited clamping manner, releasing the positioning hook. The screening net is pulled outwards, so that the limiting blocks on the screening net are released from the first limiting grooves, and the first sliding plates and the first chutes are slidably installed and pulled out, thereby realizing the release of the limit and fixation of the screening net, achieving the rapid disassembly and installation of the screening net, improving the replacement and maintenance efficiency, and improving the use efficiency of bone meal at the construction site. Brief Description of the Drawings

[0013] Figure 1 is a schematic diagram of the overall structure of the screening device of the present utility model;

[0014] Figure 2 is a schematic diagram of the structure of the limit plate, limit block and first limit groove of the present utility model;

[0015] Figure 3 is a schematic diagram of the sliding installation structure and limit clamping structure of the support frame to the screening net of the present utility model;

[0016] Figure 4 is a schematic diagram of the through hole and positioning hook structure of the present utility model;

[0017] Figure 5 is a schematic diagram of the positioning component structure of the present utility model;

[0018] Figure 6 is the Figure 5 analysis structure schematic diagram of the positioning component in the present utility model;

[0019] Figure 7 is the analysis structure schematic diagram of the positioning component of the present utility model;

[0020] In the figure: support frame 1, first chute 2, screening net 3, limit plate 4, positioning component 5, first slide plate 6, limit block 7, first limit groove 11, positioning hook 12, positioning groove 13, first clamping plate 14, first spring assembly 15, fixed shaft 16, through hole 17, operation plate 21, inner cylinder 22, outer cylinder 23, spring 24, diversion plate 25. Detailed Description of the Preferred Embodiment

[0021] The present utility model will be further described below with reference to the accompanying drawings.

[0022] As Figures 1 to 7 shown:

[0023] The utility model relates to a screening device facilitating the replacement of a filter screen, which comprises a support frame 1, a first chute 2, a screening net 3, a limiting plate 4, and a positioning assembly 5. A screening net 3 is arranged inside the support frame 1. On both sides of the bottom of the screening net 3 in the width direction, there are respectively arranged first sliding plates 6. Inside the support frame 1, at positions corresponding to the first sliding plates 6, there are arranged first chutes 2. The first sliding plates 6 are slidably installed in the first chutes 2. On the upper part of the top of the screening net 3, there are distributed limiting blocks 7. Inside the support frame 1, at positions corresponding to the limiting blocks 7, there is arranged a limiting plate 4. At the position of the limiting block 7, the limiting plate 4 is provided with a first limiting groove 11. The limiting blocks 7 are slidably inserted into the first limiting groove 11. On both sides of the bottom of the bottom end of the screening net 3, there are arranged positioning hooks 12. The positioning assembly 5 comprises a first clamping plate 14 and a first spring assembly 15. The first clamping plate 14 is arranged on one side of the positioning hook 12 close to the inner wall of the support frame 1. The first clamping plate 14 is provided with a positioning groove 13 matching the shape of the positioning hook 12. The positioning groove 13 enables the positioning hook 12 to be freely disassembled or positioned and installed. On the side of the first clamping plate 14 far from the positioning hook 12, a fixed shaft 16 is fixedly arranged. The fixed shaft 16 penetrates through the support frame 1, and at the penetration position of the support frame 1 for the fixed shaft 16, a through hole 17 is opened. The through hole 17 allows the fixed shaft 16 to be pulled out and inserted. At the end of the fixed shaft 16 penetrating out of the support frame 1, there is arranged an operation plate 21. The circumference of the operation plate 21 is fixedly installed with the outside of the support frame 1 through the first spring assembly 15. By cooperating the operation plate 21 with the first spring assembly 15, pulling the fixed shaft 16 to move back and forth, the first clamping plate 14 positions or releases the positioning hook 12.

[0024] To solve the problems of low replacement efficiency and great difficulty in replacing the screening net, and the need to spend a long time replacing and processing the screening net, the structure proposed in this patent is as follows: symmetrically arranged first chutes 2 are provided inside the support frame 1. At positions corresponding to the first chutes 2 at the bottom of the screening net 3, there are arranged first sliding plates 6. On the upper part of the top of the screening net 3, there are distributed limiting blocks 7. Inside the support frame 1, at positions corresponding to the limiting blocks 7, there is arranged a limiting plate 4. At the position of the limiting block 7, the limiting plate 4 is provided with a first limiting groove 11;

[0025] When the screening net 3 is installed inside the support frame 1, the first sliding plates 6 are slidably installed inside the first chutes 2, and the limiting blocks 7 are inserted and installed in the first limiting grooves 11, forming the support and installation of the screening net 3 through the first chutes 2 and the limiting installation of the screening net 3 through the first limiting grooves 11;

[0026] On both sides of the bottom of the bottom end of the screening mesh 3, positioning hooks 12 are provided. By opening through holes 17 on both sides of the support frame 1, a fixed shaft 16 is movably inserted and installed in the through holes 17. A first clamping plate 14 is fixedly installed at the inner end of the fixed shaft 16 inside the support frame 1. A positioning groove 13 matching the shape of the positioning hook 12 is provided on the surface of the first clamping plate 14. The positioning hook 12 is preferably set in an "L" shape. The positioning hook 12 is limited and clamped through the positioning groove 13, so as to realize the fixed and limited installation of the screening mesh 3; at the end where the fixed shaft 16 passes through the through hole 17, an operation plate 21 is provided. The circumference of the operation plate 21 is fixedly installed with the outside of the support frame 1 through a first spring assembly 15. Through the cooperation of the operation plate 21 and the first spring assembly 15, the fixed shaft 16 is reciprocally moved by pulling. In the initial state, through the elastic action of the first spring assembly 15, the positioning groove 13 on the first clamping plate 14 limits and clamps the positioning hook 12, so as to maintain the fixed and limited installation of the screening mesh 3; when disassembling the screening mesh 3, by pulling the operation plate 21, through the elastic action of the first spring assembly 15, the positioning groove 13 limits and clamps the positioning hook 12 to separate, releasing the positioning hook 12, and the screening mesh 3 is pulled outwards, so that the limiting block 7 on the screening mesh 3 is released from the first limiting groove 11, and the first sliding plate 6 is slidably installed and pulled out from the first sliding groove 2, realizing the rapid disassembly of the screening mesh 3; when replacing, with the same structure, pull the operation plate 21, the first sliding plate 6 is slidably installed in the first sliding groove 2, the limiting block 7 is inserted and installed in the first limiting groove 11. After the screening mesh 3 is installed, release the operation plate 21. Through the elastic action of the first spring assembly 15, the positioning groove 13 on the first clamping plate 14 limits and clamps the positioning hook 12, so as to maintain the fixed and limited installation of the screening mesh 3;

[0027] In at least one embodiment, in order to realize the limiting and clamping of the first clamping plate 14 to the positioning hook 12 to limit and install the screening mesh 3, and through the movable cooperation installation of the first clamping plate 14 to the positioning hook 12, to realize the rapid fixed disassembly of the screening mesh 3, the adopted structure is: at the four corners of the circumference of the operation plate 21, a first spring assembly 15 is provided. The first spring assembly 15 includes an inner cylinder 22 and an outer cylinder 23. The top end of the inner cylinder 22 is fixedly installed with the outside of the support frame 1. The bottom end of the inner cylinder 22 is sleeved inside the outer cylinder 23, and the inner cylinder 22 and the outer cylinder 23 are fixed through a spring 24. The spring 24 is sleeved and installed inside the inner cylinder 22 and the outer cylinder 23. The end of the outer cylinder 23 away from the inner cylinder 22 is fixedly installed with the operation plate 21.

[0028] When the first clamping plate 14 is installed on the positioning hook 12 in a limiting and clamping manner, through the elastic pulling of the outer cylinder 23 by the spring 24, the inner cylinder 22 is sleeved into the inner part of the outer cylinder 23, so that the first clamping plate 14 moves towards the positioning hook 12, and the first clamping plate 14 clamps and limits the positioning hook 12 to install the screening net 3 in a limiting manner; when disassembling the screening net 3, the operating plate 21 is pulled, the outer cylinder 23 moves away from the inner cylinder 22, and the first clamping plate 14 is pulled out through the fixed shaft 16, so that the positioning groove 13 of the positioning hook 12 on the first clamping plate 14 is released, thereby realizing the release of the limiting and fixing of the screening net 3, realizing the rapid disassembly and installation of the screening net 3, improving the replacement and maintenance efficiency, and improving the utilization rate of bone meal at the construction site.

[0029] In at least one embodiment, in order to increase the centralized collection of bone meal screening, a diversion plate 25 is arranged at the bottom of the screening net 3, and the diversion plate 25 is fixedly installed inside the support frame 1 to realize the collection of the screened bone meal and improve the utilization rate of bone meal.

[0030] In at least one embodiment, in order to improve the screening efficiency and convenience of bone meal screening, the screening net 3 is arranged to incline downward on the side away from the positioning assembly 5.

[0031] In at least one embodiment, in order to improve the convenience of bone meal collection and the utilization rate of bone meal, the screening net 3 is arranged to incline downward on the side close to the positioning assembly 5.

[0032] The embodiments in the present invention are only used to illustrate the present invention and do not constitute a limitation on the scope of the claims. Other substantially equivalent alternatives that can be thought of by those skilled in the art are all within the protection scope of the present invention.

Claims

1. A screening device facilitating the replacement of a filter screen, characterized in that It includes a support frame (1), a first chute (2), a screening mesh (3), a limiting plate (4), and a positioning assembly (5). Inside the support frame (1), there is a screening mesh (3). On both sides at the bottom in the width direction of the screening mesh (3), there are respectively a first sliding plate (6). Inside the support frame (1), at the positions corresponding to the first sliding plate (6), there are first chutes (2). The first sliding plate (6) is slidably installed in the first chutes (2). At the upper part of the top of the screening mesh (3), there are limiting blocks (7) distributed. Inside the support frame (1), at the positions corresponding to the limiting blocks (7), there is a limiting plate (4). At the position of the limiting plate (4) corresponding to the limiting block (7), there is a first limiting groove (11). The limiting block (7) is slidably inserted into the first limiting groove (11). At both sides of the bottom of the bottom end of the screening mesh (3), there are positioning hooks (12). The positioning assembly (5) includes a first clamping plate (14) and a first spring assembly (15). The first clamping plate (14) is arranged on the side of the positioning hook (12) close to the inner wall of the support frame (1). The first clamping plate (14) is provided with a positioning groove (13) matching the shape of the positioning hook (12). The positioning groove (13) can enable the positioning hook (12) to be freely disassembled or installed in a positioned manner. On the side of the first clamping plate (14) away from the positioning hook (12), a fixed shaft (16) is fixedly arranged. The fixed shaft (16) penetrates through the support frame (1), and at the penetration position of the support frame (1) for the fixed shaft (16), a through hole (17) is opened. The through hole (17) allows the fixed shaft (16) to be pulled out and moved. At the end of the fixed shaft (16) penetrating out of the support frame (1), there is an operation plate (21). The circumference of the operation plate (21) is fixedly installed with the outside of the support frame (1) through the first spring assembly (15). By cooperating the operation plate (21) with the first spring assembly (15), pulling and pushing the fixed shaft (16) to move back and forth, the first clamping plate (14) positions or releases the positioning hook (12).

2. The screening device for facilitating the replacement of a filter screen according to claim 1, characterized in that, At the four corners in the circumference of the operation plate (21), there are first spring assemblies (15). The first spring assembly (15) includes an inner cylinder (22) and an outer cylinder (23). The top end of the inner cylinder (22) is fixedly installed with the outside of the support frame (1). The bottom end of the inner cylinder (22) is sleeved inside the outer cylinder (23), and the inner cylinder (22) and the outer cylinder (23) are fixed by a spring (24). The spring (24) is sleeved and installed inside the inner cylinder (22) and the outer cylinder (23). The end of the outer cylinder (23) away from the inner cylinder (22) is fixedly installed with the operation plate (21).

3. The screening device for facilitating the replacement of a filter screen according to claim 1, characterized in that, At the bottom of the screening mesh (3), there is a diversion plate (25). The diversion plate (25) is fixedly installed inside the support frame (1).

4. The screening device for facilitating the replacement of a filter screen according to claim 1, wherein, The screening mesh (3) is inclined downward on the side away from the positioning assembly (5).

5. The screening device for facilitating the replacement of a filter screen according to claim 3, wherein, The screening mesh (3) is inclined downward on the side close to the positioning assembly (5).

Images