Screening device for processing dry-mixed mortar

Abstract

The utility model discloses a screening device for processing dry-mixed mortar. The screening device comprises a screening bin, an upper screening mesh belt and a lower screening mesh belt. The dry-mixed mortar screening device has the beneficial effects that when dry-mixed mortar materials are screened, the materials can be put into the screening bin from the feeding opening, the first driving motor drives the upper driving roller and the lower driving roller to rotate and drives the upper screening mesh belt and the lower screening mesh belt to rotate, the mesh diameter of the upper screening mesh belt is small, and the mesh diameter of the lower screening mesh belt is large; along with continuous rotating conveying of the upper screening mesh belt and the lower screening mesh belt, the materials with the minimum granularity penetrate through the upper screening mesh belt to fall onto the top surface of the upper inclined plate to be discharged along the upper discharge port, and the materials with the medium granularity penetrate through the lower screening mesh belt to fall onto the top surface of the lower inclined plate to be discharged along the lower discharge port; and large-particle-size materials fall onto the top surface of the bottom inclined plate and are discharged along the bottom discharge port, so that multi-stage continuous automatic screening is completed, and the working efficiency and the use stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, specifically to a screening device for dry-mixed mortar processing. Background Technology

[0002] Currently, dry-mixed mortar refers to a granular or powdery material made by physically mixing aggregates (such as quartz sand), inorganic cementitious materials (such as cement), and additives (such as polymers) in a certain proportion after drying and screening. It is transported to the construction site in bagged or bulk form and can be used directly after adding water and stirring. It is also known as dry mortar powder, dry mix, or dry-mix powder. Some building adhesives also belong to this category. Dry-mixed mortar plays a role in bonding, padding, and decoration in the construction industry by applying thin layers. It is widely used in construction and decoration projects. Dry-mixed mortar storage is used to store the dry-mixed mortar needed in the road construction process. It is widely used in infrastructure construction around the world.

[0003] A search revealed that application number CN202321877065.5, entitled "A Screening Device for Dry-Mixed Mortar Processing," and Chinese Patent Publication No. CN214865115U, entitled "A Vibrating Screening Device for Dry-Mixed Mortar Processing," suffers from poor screening efficiency and ineffective screening, making it difficult to promptly discharge filtered material particles, thus affecting screening efficiency. This application addresses these issues by setting up two screening plates, enabling stratified filtration of materials, resulting in high screening efficiency and good screening effect. Furthermore, by incorporating a height adjustment component, the screening process can be optimized. The height difference of the plates allows the material to slide off at an angle, making it convenient to use. Compared to existing screening devices, this solves the technical problems of poor screening efficiency, ineffective screening, and difficulty in timely discharge of filtered material particles, which affect screening efficiency. However, in actual operation, this application requires the use of a height adjustment component to discharge material, which reduces the continuity of discharge and affects the continuity and efficiency of work. At the same time, the vibration motor is prone to causing overall equipment vibration when starting, affecting stability and generating significant noise. Further improvements are still possible.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a screening device for dry-mixed mortar processing, which has the advantages of high efficiency, continuous operation, and stability, thereby solving the problems mentioned in the background technology.

[0006] To achieve the aforementioned advantages of high efficiency, continuity, and stability, the specific technical solution adopted by this utility model is as follows:

[0007] A screening device for dry-mixed mortar processing includes a screening bin, an upper screening mesh belt, and a lower screening mesh belt. An upper drive roller is rotatably connected inside the screening bin, and the upper screening mesh belt is sleeved on the outside of the upper drive roller. A lower drive roller is rotatably connected below the upper screening mesh belt inside the screening bin, and the lower screening mesh belt is sleeved on the outside of the lower drive roller. An upper rotating rod and a lower rotating rod are rotatably connected to the inner sides of the lower and upper screening mesh belts inside the screening bin, respectively. The surface of the rotating rod is connected to a striking ball by a spring. The upper and lower rotating rods are fixedly installed inside the screening chamber below the upper and lower rotating rods. The front and back surfaces of the screening chamber are respectively provided with an upper discharge port and a lower discharge port. The upper and lower inclined plates extend to the upper and lower discharge ports respectively. One end of the screening chamber is provided with a bottom discharge port, and a bottom inclined plate is fixedly installed at the bottom of the bottom discharge port. The top surface of the bottom inclined plate extends to the bottom of the other end of the lower screening mesh belt.

[0008] Furthermore, the mesh size of the upper screening belt is smaller than that of the lower screening belt, and both the upper and lower screening belts are annular structures.

[0009] Furthermore, the upper and lower rotating rods are arranged in multiple sets at equal intervals, and the striking balls are arranged in multiple sets at equal intervals along the length of the upper rotating rod.

[0010] Furthermore, the surface of the striking ball is polished, and both ends of the spring are fixedly connected to the upper rotating rod and the surface of the striking ball, respectively.

[0011] Furthermore, a feeding port is provided at one end of the top surface of the screening bin, and the length of the feeding port is less than the width of the upper screening mesh belt.

[0012] Furthermore, a cyclone dust collector is installed on one side of the screening chamber, and the input end of the cyclone dust collector is connected to the screening chamber through a dust extraction pipe, and the exhaust end of the cyclone dust collector is connected to a high-power exhaust fan through an exhaust pipe.

[0013] Furthermore, a first drive motor and a second drive motor are fixedly installed on the front facade of the screening chamber, and the output end of the first drive motor is fixedly connected to one end of the roller shaft of the upper drive roller and the lower drive roller.

[0014] Furthermore, the output end of the second drive motor is fixedly connected to one end of the upper rotating rod and the lower rotating rod, and both ends of the upper rotating rod and the lower rotating rod pass through the screening chamber and are rotatably connected to the screening chamber through bearings.

[0015] Compared with the prior art, the present invention provides a screening device for dry-mixed mortar processing, which has the following beneficial effects:

[0016] (1) This utility model adopts an upper screening belt and a lower screening belt. When screening dry-mixed mortar materials, the materials can be fed into the screening bin from the feeding port. The first drive motor drives the upper drive roller and the lower drive roller to rotate, which in turn drives the upper screening belt and the lower screening belt to rotate. The upper screening belt has a small mesh diameter, and the lower screening belt has a large mesh diameter. As the upper screening belt and the lower screening belt rotate and convey, the smallest particle size of the material is selected. Materials passing through the upper screening belt fall onto the top surface of the upper inclined plate and are discharged through the upper outlet. Medium-sized materials pass through the lower screening belt and fall onto the top surface of the lower inclined plate and are discharged through the lower outlet. Large-sized materials fall onto the top surface of the bottom inclined plate and are discharged through the bottom outlet, completing multi-stage continuous automatic screening. Furthermore, the upper, lower, and bottom outlets are distributed in three different directions within the screening chamber, preventing interference between them and improving work efficiency and operational stability.

[0017] (2) This utility model adopts an upper rotating rod and a lower rotating rod. When screening materials, the second drive motor drives the upper rotating rod and the lower rotating rod to rotate. The spring is stretched by centrifugal force, causing the striking ball to hit the upper screening mesh belt and the lower screening mesh belt, generating a vibration effect and improving screening efficiency. At the same time, compared with the traditional vibrating motor, the screening chamber as a whole does not generate vibration, the noise is lower, and the use is more stable and reliable. In addition, the upper rotating rod and the lower rotating rod are distributed in multiple groups at equal intervals, providing a uniform and comprehensive vibration effect, which improves the uniformity of screening and working efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the internal structure of the screening device for dry-mixed mortar processing proposed in this utility model;

[0020] Figure 2 This is a front view of the screening device for dry-mixed mortar processing proposed in this utility model;

[0021] Figure 3 This is a rear view of the screening device for dry-mixed mortar processing proposed in this utility model;

[0022] Figure 4 This is a schematic diagram of the back elevation of the screening device for dry-mixed mortar processing proposed in this utility model.

[0023] In the picture:

[0024] 1. Screening bin; 2. Upper screening mesh belt; 3. Upper drive roller; 4. Feed inlet; 5. Upper rotating rod; 6. Upper inclined plate; 7. Upper discharge outlet; 8. Lower screening mesh belt; 9. Lower drive roller; 10. Lower rotating rod; 11. Lower inclined plate; 12. Bottom inclined plate; 13. Bottom discharge outlet; 14. Dust extraction pipe; 15. Cyclone dust collector; 16. Exhaust pipe; 17. High-power exhaust fan; 18. First drive motor; 19. Second drive motor; 20. Striking ball; 21. Spring; 22. Lower discharge outlet. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present invention, a screening device for dry-mixed mortar processing is provided.

[0027] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, the screening device for dry-mixed mortar processing according to an embodiment of the present invention includes a screening bin 1, an upper screening mesh belt 2, and a lower screening mesh belt 8. An upper drive roller 3 is rotatably connected inside the screening bin 1, and the upper screening mesh belt 2 is sleeved on the outside of the upper drive roller 3. A lower drive roller 9 is rotatably connected below the upper screening mesh belt 2 inside the screening bin 1. Four sets of both the upper drive roller 3 and the lower drive roller 9 are arranged. The lower screening mesh belt 8 is sleeved on the outside of the lower drive roller 9. An upper rotating rod 5 and a lower rotating rod 10 are rotatably connected to the inner sides of the lower screening mesh belt 8 and the upper screening mesh belt 2 inside the screening bin 1, respectively. The surfaces of the upper rotating rod 5 and the lower rotating rod 10 are connected by springs 21. Multiple sets of ball-hitting devices 20 are distributed at equal angles along the central axis of the upper rotating rod 5. An upper inclined plate 6 and a lower inclined plate 11 are fixedly installed inside the screening chamber 1 below the upper rotating rod 5 and the lower rotating rod 10. The front and back surfaces of the screening chamber 1 are respectively provided with an upper discharge port 7 and a lower discharge port 22. The upper inclined plate 6 and the lower inclined plate 11 extend to the upper discharge port 7 and the lower discharge port 22, respectively. A bottom discharge port 13 is provided at one end of the screening chamber 1, and a bottom inclined plate 12 is fixedly installed at the bottom of the bottom discharge port 13. The top surface of the bottom inclined plate 12 extends to below the other end of the lower screening mesh belt 8. When screening dry-mixed mortar materials, the material can be fed into the screening chamber 1 through the feeding port 4. In the process, the first drive motor 18 drives the upper drive roller 3 and the lower drive roller 9 to rotate, which in turn drives the upper screening belt 2 and the lower screening belt 8 to rotate. The upper screening belt 2 has a small mesh diameter, while the lower screening belt 8 has a large mesh diameter. As the upper screening belt 2 and the lower screening belt 8 rotate and convey, the smallest particle size material passes through the upper screening belt 2 and falls to the top surface of the upper inclined plate 6 and is discharged through the upper discharge port 7. Medium-sized material passes through the lower screening belt 8 and falls to the top surface of the lower inclined plate 11 and is discharged through the lower discharge port 22. Large-diameter material falls to the top surface of the bottom inclined plate 12 and is discharged through the bottom discharge port 13, completing multi-stage continuous automatic screening. The upper discharge port 7 and the lower discharge port 2... The upper and lower rotating rods 10 are distributed in three different directions in the screening chamber 1, and they do not interfere with each other, which improves working efficiency and stability. At the same time, when screening materials, the second drive motor 19 drives the upper rotating rod 5 and the lower rotating rod 10 to rotate. The centrifugal force causes the spring 21 to extend, causing the striking ball 20 to hit the upper screening mesh belt 2 and the lower screening mesh belt 8, generating a vibration effect and improving screening efficiency. Meanwhile, compared with traditional vibrating motors, the screening chamber 1 as a whole does not vibrate, has less noise, and is more stable and reliable in use. In addition, the upper rotating rod 5 and the lower rotating rod 10 are distributed in multiple groups at equal intervals, providing a uniform and comprehensive vibration effect, which improves the uniformity of screening and working efficiency.

[0028] In one embodiment, the mesh size of the upper screening belt 2 is smaller than that of the lower screening belt 8, and both the upper screening belt 2 and the lower screening belt 8 are annular structures, which serve the functions of grading and continuous screening.

[0029] In one embodiment, multiple sets of upper rotating rods 5 and lower rotating rods 10 are arranged at equal intervals, and multiple sets of striking balls 20 are arranged at equal intervals along the length direction of the upper rotating rod 5, thereby improving the efficiency of striking vibration.

[0030] In one embodiment, the surface of the striking ball 20 is polished, and the two ends of the spring 21 are fixedly connected to the upper rotating rod 5 and the surface of the striking ball 20, respectively, so that the surface of the striking ball 20 is smooth and wear is reduced.

[0031] In one embodiment, a feeding port 4 is provided at one end of the top surface of the screening chamber 1, and the length of the feeding port 4 is less than the width of the upper screening mesh belt 2, which facilitates feeding.

[0032] In one embodiment, a cyclone dust collector 15 is installed on one side of the screening chamber 1, and the input end of the cyclone dust collector 15 is connected to the screening chamber 1 through a dust extraction pipe 14. The exhaust end of the cyclone dust collector 15 is connected to a high-power exhaust fan 17 through an exhaust pipe 16. The high-power exhaust fan 17 extracts air during screening, and the air inside the screening chamber 1 carries dust into the cyclone dust collector 15 through the cyclone dust collector 15 and the dust extraction pipe 14 for synchronous dust removal.

[0033] In one embodiment, a first drive motor 18 and a second drive motor 19 are fixedly installed on the front facade of the screening chamber 1, and the output end of the first drive motor 18 is fixedly connected to one end of the roller shaft of the upper drive roller 3 and the lower drive roller 9. This is a common drive structure, and two sets of the first drive motor 18 are arranged.

[0034] In one embodiment, the output end of the second drive motor 19 is fixedly connected to one end of the upper rotating rod 5 and the lower rotating rod 10, and both ends of the upper rotating rod 5 and the lower rotating rod 10 pass through the screening chamber 1 and are rotatably connected to the screening chamber 1 through bearings. Multiple sets of the second drive motor 19 are arranged.

[0035] Working principle:

[0036] When screening dry-mixed mortar materials, the materials can be fed into the screening bin 1 through the feeding port 4. The first drive motor 18 drives the upper drive roller 3 and the lower drive roller 9 to rotate, which in turn drives the upper screening screen belt 2 and the lower screening screen belt 8 to rotate. The upper screening screen belt 2 has a small mesh diameter, while the lower screening screen belt 8 has a large mesh diameter. As the upper screening screen belt 2 and the lower screening screen belt 8 rotate and convey, the smallest particles pass through the upper screening screen belt 2 and fall to the top surface of the upper inclined plate 6 and are discharged through the upper discharge port 7. Medium-sized particles pass through the lower screening screen belt 8 and fall to the top surface of the lower inclined plate 11 and are discharged through the lower discharge port 22. Large-diameter particles fall to the top surface of the bottom inclined plate 12 and are discharged through the bottom discharge port 13, completing multi-stage continuous automatic screening. Furthermore, the upper discharge port 7, the lower discharge port 22, and the bottom discharge port 13 are distributed in three different directions in the screening chamber 1, which will not interfere with each other, thus improving work efficiency and stability. At the same time, when screening materials, the second drive motor 19 drives the upper rotating rod 5 and the lower rotating rod 10 to rotate. Through centrifugal force, the spring 21 is extended, causing the striking ball 20 to hit the upper screening mesh belt 2 and the lower screening mesh belt 8, generating a vibration effect and improving screening efficiency. Meanwhile, compared with traditional vibrating motors, the screening chamber 1 as a whole does not generate vibration, has less noise, and is more stable and reliable in use. In addition, the upper rotating rod 5 and the lower rotating rod 10 are evenly distributed in multiple sets, providing a uniform and comprehensive vibration effect, which improves the uniformity of screening and work efficiency.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Sieving device for dry-mix mortar processing, characterized in that, The utility model provides a kind of screening bin, including upper screening net belt (2) and lower screening net belt (8), the screening bin (1) inside rotationally connected with upper drive roller (3), and upper drive roller (3) outside sleeve connection has upper screening net belt (2), and upper screening net belt (2) below is rotationally connected with lower drive roller (9) in screening bin (1) inside, the lower drive roller (9) outside sleeve connection has lower screening net belt (8), and lower screening net belt (8) and upper screening net belt (2) inside in screening bin (1) inside rotationally connected with upper rotary lever (5) and lower rotary lever (10) respectively, and upper rotary lever (5) and lower rotary lever (10) surface are connected with beating ball (20) by spring (21), the upper rotary lever (5) and lower rotary lever (10) below are fixedly installed with upper inclined plate (6) and lower inclined plate (11) in screening bin (1) inside, and screening bin (1) front elevation and back elevation are respectively provided with upper discharge port (7) and lower discharge port (22), and upper inclined plate (6) and lower inclined plate (11) respectively extend upper discharge port (7) and lower discharge port (22), the screening bin (1) one end is provided with bottom discharge port (13), and bottom discharge port (13) bottom is fixedly installed with bottom inclined plate (12), and bottom inclined plate (12) top surface extends to lower screening net belt (8) other end below.

2. The screening device for dry mortar processing according to claim 1, characterized in that, The mesh aperture of the upper screening net belt (2) is smaller than the mesh aperture of the lower screening net belt (8), and the upper screening net belt (2) and the lower screening net belt (8) are both annular structures.

3. The screening device for dry mortar processing according to claim 1, characterized in that, The upper rotary lever (5) and the lower rotary lever (10) are arranged with multiple groups at equal intervals.

4. The screening device for dry mortar processing according to claim 1, characterized in that, The beating ball (20) is polished on the surface, and the spring (21) is fixedly connected with the upper rotary lever (5) and the surface of the beating ball (20) at two ends.

5. The dry mortar processing screening device according to claim 1, characterized in that The screening bin (1) is provided with a feeding port (4) at one end of the top surface, and the length of the feeding port (4) is smaller than the width of the upper screening net belt (2).

6. The dry mortar processing screening device according to claim 1, characterized in that A cyclone dust collector (15) is installed on one side of the screening bin (1), and the input end of the cyclone dust collector (15) is connected with the screening bin (1) through a dust extraction pipe (14), and the exhaust end of the cyclone dust collector (15) is connected with a high-power air extraction fan (17) through an air extraction pipe (16).

7. The dry mortar processing screening device according to claim 1, characterized in that A first driving motor (18) and a second driving motor (19) are fixedly installed on the front elevation of the screening bin (1), and the output end of the first driving motor (18) is fixedly connected with one end of the shaft of the upper drive roller (3) and the lower drive roller (9).

8. The screening device for dry mortar processing according to claim 7, characterized in that The output end of the second driving motor (19) is fixedly connected with one end of the upper rotary lever (5) and the lower rotary lever (10), and both ends of the upper rotary lever (5) and the lower rotary lever (10) penetrate through the screening bin (1) and are rotationally connected with the screening bin (1) through bearings.

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