A dry-mixed mortar sand screening device
By using a vibration structure consisting of a slide bar, slider, spring, and cam, combined with a dust extraction fan, the problem of low screening efficiency and dust pollution in traditional dry-mixed mortar screening devices has been solved, achieving efficient screening and clean production.
Patent Information
- Application Number
- CN202521775343.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-20
AI Technical Summary
Traditional dry-mixed mortar screening devices have simple screening structures, which means that fine materials that meet the particle size requirements cannot pass through the screen in time, affecting production efficiency and causing serious dust pollution.
The screening mechanism employs a vibrating structure with sliding rods, sliders, springs, and cams to ensure that the sand is fully dispersed on the screen, and the dust removal mechanism uses a blower to create negative pressure to remove dust.
It improved screening efficiency and quality, reduced dust pollution, and improved the working environment.
Smart Images
Figure CN224673144U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dry-mixed mortar material screening technology, specifically a dry-mixed mortar material screening device. Background Technology
[0002] Dry-mixed mortar refers to a granular or powdery material that is physically mixed in a certain proportion with aggregates (such as quartz sand), inorganic cementitious materials (such as cement), and additives (such as polymers) that have undergone drying and screening. It is transported to the construction site in bagged or bulk form and can be used directly after being mixed with water.
[0003] In the production process of dry-mixed mortar, sand screening is a crucial step. Traditional sand screening devices often have some problems. Some devices have simple screening structures that cannot fully vibrate and screen the sand, resulting in fine materials that meet the particle size requirements not being able to pass through the screen in time, affecting production efficiency. Therefore, there is an urgent need for a dry-mixed mortar sand screening device. Utility Model Content
[0004] The purpose of this invention is to provide a dry-mixed mortar sand screening device to solve the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a dry-mixed mortar sand screening device, including a screening mechanism, wherein a dust removal mechanism is provided on the top of the screening mechanism;
[0006] The screening mechanism includes a screening box, inside which two sliding rods are fixedly connected. Two sliders are fitted on the outer side of each sliding rod. The four sliders are fixedly connected to the same screen frame at their front and rear ends, close to each other. Springs are fitted on the surface of each of the two sliding rods. An L-shaped frame is fixedly connected to the right side of the screen frame. A motor is installed on the front of the screening box. A rotating shaft is rotatably connected inside the screening box. A cam is fixedly connected to the surface of the rotating shaft. A feed hopper is provided on the top of the screening box.
[0007] Preferably, the front of the rotating shaft is fixedly connected to the motor, the outer surface of the cam abuts against the L-shaped frame, the left side of each spring is fixedly connected to the slider, and the right side of each spring is fixedly connected to the inner wall of the screening box.
[0008] Preferably, a first discharge port is provided on the left side of the screening box, and the left side of the screen frame passes through the first discharge port and extends to the outside of the screening box.
[0009] Preferably, the screening box is provided with a guide plate inside, and the right side of the guide plate passes through the second discharge port and extends to the outside of the screening box.
[0010] Preferably, the dust removal mechanism includes a filter box, a dust suction pipe is fixedly connected to the front of the filter box, a dust suction hood is fixedly connected to the bottom of the dust suction pipe, and an exhaust fan is installed on the back of the filter box.
[0011] Preferably, a dust filter screen is inserted inside the filter box, and a sealing plate is installed on the left side of the filter box by bolts, with the left side of the dust filter screen being fixedly connected to the sealing plate.
[0012] Preferably, the end of the dust hood away from the dust suction pipe is fixedly connected to the screening box, and the bottom of the exhaust fan is fixedly connected to the mounting plate, the front of the mounting plate being fixedly connected to the screening box.
[0013] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0014] First, this utility model uses a motor-driven cam and spring to make the screen frame reciprocate stably from left to right. Combined with the guide structure of the slide rod and slider, it ensures that the sand is fully dispersed on the screen, improves the separation accuracy of coarse and fine materials, and allows sand that meets the particle size requirements to fall through the screen and be discharged into the guide plate, while coarse materials that do not meet the requirements remain in the screen frame and are discharged, which greatly improves the screening efficiency and quality.
[0015] Secondly, the dust removal mechanism of this utility model starts synchronously during the screening operation. It uses a blower to create negative pressure in the screening box, which draws the dust into the filter box. After being filtered by the dust filter screen, clean air is discharged. At the same time, the sealing plate can be disassembled regularly to clean or replace the dust filter screen, ensuring continuous dust removal effect, reducing dust pollution during the screening process, and improving the working environment. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the front cross-section structure of this utility model;
[0018] Figure 3 This is a top-view structural diagram of the present invention (cut across the top).
[0019] Figure 4 This is a side view of the top section of the filter box of this utility model.
[0020] The components include: 1. Screening box; 2. Slide bar; 3. Sliding block; 4. Screen frame; 5. Spring; 6. L-shaped frame; 7. Motor; 8. Rotating shaft; 9. Cam; 10. Feed hopper; 11. Guide plate; 12. Filter box; 13. Dust suction pipe; 14. Dust suction hood; 15. Exhaust fan; 16. Dust filter screen; 17. Sealing plate. Detailed Implementation
[0021] 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.
[0022] This utility model provides the following technical solution:
[0023] Example 1
[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A dry-mixed mortar sand screening device includes a screening mechanism, and a dust removal mechanism is provided on the top of the screening mechanism.
[0025] The screening mechanism includes a screening box 1. Inside the screening box 1, two slide rods 2 are fixedly connected. Two sliders 3 are sleeved on the outside of each slide rod 2. The four sliders 3 are fixedly connected to the same screen frame 4 at their front and rear ends that are close to each other. Springs 5 are sleeved on the surface of both slide rods 2. An L-shaped frame 6 is fixedly connected to the right side of the screen frame 4. A motor 7 is installed on the front of the screening box 1. A rotating shaft 8 is rotatably connected inside the screening box 1. A cam 9 is fixedly connected to the surface of the rotating shaft 8. A feed hopper 10 is provided on the top of the screening box 1.
[0026] The front of the rotating shaft 8 is fixedly connected to the motor 7, the outer surface of the cam 9 abuts against the L-shaped frame 6, the left side of each spring 5 is fixedly connected to the slider 3, and the right side of each spring 5 is fixedly connected to the inner wall of the screening box 1.
[0027] The left side of the screening box 1 is provided with a first discharge port, and the left side of the screen frame 4 passes through the first discharge port and extends to the outside of the screening box 1.
[0028] The screening box 1 is equipped with a guide plate 11 inside. The right side of the guide plate 11 passes through the second discharge port and extends to the outside of the screening box 1.
[0029] Through the above technical solution, the screening mechanism uses the screening box 1 as the main frame. The top feed hopper 10 is used for adding dry-mixed mortar. Two sliding rods 2 are fixed in parallel inside, and two sliders 3 are sleeved on each sliding rod 2. The four sliders 3 are connected to a screen frame 4, so that the screen frame 4 can slide left and right along the sliding rods 2. Springs 5 are sleeved on the surface of the sliding rods 2. The left side of the spring 5 is fixed to the slider 3, and the right side is fixed to the inner wall of the screening box 1, forming an elastic reset structure. The right side of the screen frame 4 is connected to an L-shaped frame 6. The screen box 1 is driven by a motor 7 to rotate the internal rotating shaft 8. The cam 9 on the rotating shaft 8 abuts against the surface of the L-shaped frame 6. The left side of the screening box 1 has a first discharge port. The left end of the screen frame 4 extends outside the box and is inclined inside. The guide plate 11 extends from the right end of the guide plate 11 through the second discharge port to the outside of the box. After the motor 7 starts, it drives the rotating shaft 8 and the cam 9 to rotate. The cam 9 pushes the screen frame 4 to the right by abutting the L-shaped frame 6. At this time, the slider 3 compresses the spring 5 to store elastic potential energy. When the cam 9 rotates to the non-protruding end and contacts the L-shaped frame 6, the spring 5 releases the potential energy and drives the screen frame 4 to reset to the left, forming a left-right reciprocating vibration. After the sand is put into the screen frame 4 from the feed hopper 10, the continuous vibration causes the sand that meets the particle size requirements to fall through the screen of the screen frame 4 into the guide plate 11 below and be discharged through the second discharge port. The coarse material that does not meet the requirements remains in the screen frame 4 and is discharged from the first discharge port with the vibration, thus realizing the separation of coarse and fine materials.
[0030] Example 2
[0031] Please see Figure 1 , Figure 2 and Figure 4 Furthermore, based on Embodiment 1, the dust removal mechanism includes a filter box 12, a dust suction pipe 13 is fixedly connected to the front of the filter box 12, a dust suction hood 14 is fixedly connected to the bottom of the dust suction pipe 13, and an exhaust fan 15 is installed on the back of the filter box 12.
[0032] A dust filter screen 16 is inserted inside the filter box 12. A sealing plate 17 is installed on the left side of the filter box 12 by bolts. The left side of the dust filter screen 16 is fixedly connected to the sealing plate 17.
[0033] The end of the dust hood 14 away from the dust suction pipe 13 is fixedly connected to the screening box 1, and the bottom of the exhaust fan 15 is fixedly connected to the mounting plate, the front of the mounting plate being fixedly connected to the screening box 1.
[0034] Through the above technical solution, the dust removal mechanism includes a filter box 12, a dust suction pipe 13, a dust suction hood 14, an exhaust fan 15, a dust filter screen 16, and a sealing plate 17. During the screening operation, the exhaust fan 15 is started simultaneously to form a negative pressure in the screening box 1, so that the dust generated by the vibration of the sand is sucked into the filter box 12 through the dust suction hood 14 and the dust suction pipe 13. After the dust is filtered by the dust filter screen 16, clean air is discharged from the exhaust fan 15. The trapped dust adheres to the filter screen. The sealing plate 17 can be removed periodically by loosening the bolts and disassembling it, so that the dust filter screen 16 can be taken out for cleaning or replacement, ensuring continuous dust removal effect and reducing dust pollution during the screening process.
[0035] 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 may be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A dry-mixed mortar aggregate screening device, comprising a screening mechanism, characterized in that: A dust removal mechanism is provided at the top of the screening mechanism; The screening mechanism includes a screening box (1), with two slide rods (2) fixedly connected inside the screening box (1). Two sliders (3) are sleeved on the outside of each slide rod (2). The four sliders (3) are fixedly connected to the same screen frame (4) at their front and back ends. Springs (5) are sleeved on the surfaces of the two slide rods (2). An L-shaped frame (6) is fixedly connected to the right side of the screen frame (4). A motor (7) is installed on the front of the screening box (1). A rotating shaft (8) is rotatably connected inside the screening box (1). A cam (9) is fixedly connected to the surface of the rotating shaft (8). A feed hopper (10) is provided on the top of the screening box (1).
2. The dry-mixed mortar sand screening device according to claim 1, characterized in that: The front of the rotating shaft (8) is fixedly connected to the motor (7), the outer surface of the cam (9) abuts against the L-shaped frame (6), the left side of each spring (5) is fixedly connected to the slider (3), and the right side of each spring (5) is fixedly connected to the inner wall of the screening box (1).
3. The dry-mixed mortar sand screening device according to claim 1, characterized in that: The left side of the screening box (1) is provided with a first discharge port, and the left side of the screen frame (4) passes through the first discharge port and extends to the outside of the screening box (1).
4. The dry-mixed mortar sand screening device according to claim 1, characterized in that: The screening box (1) is provided with a guide plate (11) inside, and the right side of the guide plate (11) passes through the second discharge port and extends to the outside of the screening box (1).
5. The dry-mixed mortar sand screening device according to claim 1, characterized in that: The dust removal mechanism includes a filter box (12), a dust suction pipe (13) is fixedly connected to the front of the filter box (12), a dust suction hood (14) is fixedly connected to the bottom of the dust suction pipe (13), and an exhaust fan (15) is installed on the back of the filter box (12).
6. The dry-mixed mortar sand screening device according to claim 5, characterized in that: A dust filter screen (16) is inserted inside the filter box (12). A sealing plate (17) is installed on the left side of the filter box (12) by bolts. The left side of the dust filter screen (16) is fixedly connected to the sealing plate (17).
7. The dry-mixed mortar sand screening device according to claim 5, characterized in that: The end of the dust hood (14) away from the dust suction pipe (13) is fixedly connected to the screening box (1), and the bottom of the exhaust fan (15) is fixedly connected to the mounting plate, and the front of the mounting plate is fixedly connected to the screening box (1).