A dust removal device of a premixed mortar raw material screening device
By designing an independent dust removal device in the premixed mortar raw material screening equipment, and adopting a combination of sedimentation and filtration, the problem of dust collection and reuse has been solved, achieving efficient dust removal and resource recycling, and reducing production costs and environmental pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENXIONG JIUGU BUILDING MATERIALS CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-31
AI Technical Summary
The dust generated during the screening process of existing premixed mortar raw material screening equipment is difficult to collect and reuse effectively, resulting in resource waste and environmental pollution.
An independent dust removal device was designed, including a settling box, a negative pressure fan, a filter cartridge, and a control valve. It achieves source capture and clear recovery of dust by combining settling and filtration, and is suitable for screening equipment for premixed mortar raw materials.
It improved dust removal efficiency, reduced dust spillage, enabled dust recycling, reduced raw material loss, improved resource utilization, and ensured workshop air quality.
Smart Images
Figure CN224573464U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of mortar processing equipment, and in particular to a dust removal device for a premixed mortar raw material screening equipment. Background Technology
[0002] Premixed mortar raw material screening equipment is a specialized device used to screen and grade various raw materials required for the production of premixed mortar. Before use, premixed mortar raw materials need to be screened to remove impurities and ensure that the particle size meets the production process requirements. Screening equipment typically uses vibrating screens or rotary screens, utilizing vibration or rotation to loosen the material and pass it through screens of different apertures, thereby achieving separation and grading. During the screening process, the crushing and high-speed movement of the material generates a large amount of dust, which not only affects the working environment but may also harm the health of operators. Therefore, dust collection devices such as baghouse dust collectors are usually installed for centralized treatment to effectively collect dust and purify exhaust gases. However, the dust collected by current baghouse dust collectors is often a mixture of various raw materials with unclear composition and proportions, making it difficult to directly recycle for use in the original formula. It is usually treated as waste, resulting in resource waste. Therefore, it is necessary to improve the dust collection device to achieve dust reuse, thereby improving resource utilization and reducing production costs. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a dust removal device for a premixed mortar raw material screening equipment.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:
[0005] A dust removal device for a premixed mortar raw material screening equipment includes a settling box, a support frame for supporting the settling box, a negative pressure fan, a control valve, and filter cartridges. The settling box includes an upper main body and a converging dust collection section located at the lower part of the main body. An air inlet is provided at the upper part of the main body, and at least one filter cartridge is provided on the main body away from the air inlet. A guide tube for the filter cartridge to extend into is provided on the main body, and a cover is detachably provided on the guide tube. An air outlet box is provided on the settling box, and a through hole corresponding to the filter cartridge is provided on the air outlet box, and a connecting pipe for docking with the filter cartridge is provided at the through hole. The filter cartridge is installed in the guide tube and its air outlet end is connected to the connecting pipe. An air outlet is provided on the air outlet box, and the air inlet end of the negative pressure fan is connected to the air outlet. A discharge pipe is provided at the bottom of the settling box, and the control valve is installed on the discharge pipe.
[0006] As a preferred technical solution of this utility model, guide rods are respectively provided inside the settling box and on both sides of the guide tube. The distance between the two guide rods is smaller than the diameter of the filter cartridge, which is used to support and guide the filter cartridge during the assembly and disassembly of the filter cartridge. The other end of the guide rod extends towards the corresponding connecting pipe and is fixedly connected to the air outlet box.
[0007] As a preferred technical solution of this utility model, a buffer plate is provided inside the settling box near the air inlet, and a number of air distribution holes are evenly distributed on the buffer plate, with a certain distance between its lower end and the bottom surface of the settling box.
[0008] As a preferred embodiment of the present invention, the buffer plate is inserted into the settling tank, and a guide seat is provided at a corresponding position inside the settling tank for the side of the buffer plate to be inserted. A limiting plate is provided on the upper part of the buffer plate to overlap with the upper end of the guide seat. A cover plate is detachably provided at the upper end of the settling tank, in the area of the buffer plate.
[0009] As a preferred embodiment of this invention, chamfers are provided at the lower corners of both sides of the buffer plate.
[0010] As a preferred embodiment of this invention, the buffer plate is provided with a handle.
[0011] In one preferred embodiment of this invention, the cover is connected to the conduit by bolts.
[0012] As a preferred embodiment of this utility model, the filter cartridge is a filter cylinder.
[0013] The above technical solution has the following advantages:
[0014] This invention employs an independent dust collection device for raw material screening equipment. This device is compact and small in size, facilitating installation and maintenance in limited spaces and effectively improving the flexibility of equipment layout. By directly connecting the dust collection device to the screening equipment, dust is captured at its source, significantly improving dust collection efficiency and reducing dust spillage pollution to the production environment. More importantly, because the dust collection device is designed for a single raw material channel, the collected dust composition is clearly defined and can be directly and quantitatively recycled back into the fine powder conveying system of that raw material. This avoids the drawbacks of traditional mixed dust, which is difficult to recover due to its complex composition, thus improving resource utilization and reducing raw material loss. Simultaneously, the exhaust air purified by the dust collection device can be further connected to a central dust collection system or the overall workshop ventilation system for secondary dust removal before being discharged, further ensuring workshop air quality and meeting environmental protection requirements. The overall design achieves an organic combination of dust control, resource recovery, and system integration, possessing good economic benefits and promotional value. Attached Figure Description
[0015] Figure 1 This is a front view of one embodiment of the present utility model;
[0016] Figure 2 for Figure 1 Sectional view along the middle AA;
[0017] Figure 3 for Figure 1 The left view;
[0018] Figure 4 for Figure 1 An exploded 3D view, omitting the cover plate;
[0019] Figure 5 for Figure 4 Enlarged view of section B;
[0020] In the picture:
[0021] 1-Settling box, 2-Support, 3-Negative pressure fan, 4-Control valve, 5-Filter cartridge, 6-Main body, 7-Dust collection section, 8-Air inlet, 9-Conduit, 10-Cover, 11-Air outlet box, 12-Connecting pipe, 13-Discharge pipe, 14-Guide rod, 15-Buffer plate, 16-Air distribution hole, 17-Guide seat, 18-Limiting plate, 19-Cover plate, 20-Chamfer, 21-Handle, 22-Bolt. Detailed Implementation
[0022] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0023] Example 1
[0024] As attached Figure 1-5As shown, a dust removal device for a premixed mortar raw material screening equipment includes a settling tank 1, a support 2 for supporting the settling tank 1, a negative pressure fan 3, a control valve 4, and filter cartridges 5. The settling tank 1 includes an upper main body 6 and a converging dust collection section 7 located at the lower part of the main body 6. An air inlet 8 is provided on the upper part of the main body 6, and two filter cartridges 5 are provided on the main body 6 away from the air inlet 8. A guide tube 9 for the filter cartridges 5 to extend into is provided on the main body 6, and a cover is detachably provided on the guide tube 9. Body 10; The settling box 1 is provided with an air outlet box 11, the air outlet box 11 is provided with a through hole corresponding to the filter cartridge 5 (not shown in the figure, the rest are the same), and a connecting pipe 12 that connects to the filter cartridge 5 is provided at the through hole; The filter cartridge 5 is installed in the guide tube 9 and the air outlet end is connected to the connecting pipe 12; The air outlet box 11 is provided with an air outlet (not shown in the figure, the rest are the same), and the air inlet end of the negative pressure fan 3 is connected to the air outlet; The bottom of the settling box 1 is provided with a discharge pipe 13, and the control valve 4 is installed on the discharge pipe 13.
[0025] In one preferred embodiment, guide rods 14 are respectively provided inside the settling box 1 on both sides of the guide tube 9. The distance between the two guide rods 14 is smaller than the diameter of the filter cartridge 5. They are used to support and guide the lower part of the filter cartridge 5 during installation and disassembly. The other end of the guide rod 14 extends towards the corresponding connecting pipe 12 and is fixedly connected to the air outlet box 11. The guide rods 14 play a positioning and guiding role during the installation of the filter cartridge 5, preventing the filter cartridge 5 from shifting and damaging the connecting pipe 12 or filter material when inserted. During disassembly, they can temporarily support the weight of the filter cartridge 5, making it easier for operators to complete the replacement work safely and conveniently, improving maintenance efficiency. At the same time, the fixed connection between the guide rods 14 and the air outlet box 11 enhances the stability of the internal structure, helps to extend the service life of the filter cartridge 5 and ensure sealing performance.
[0026] As a preferred technical solution in this embodiment, two buffer plates 15 are provided inside the settling box 1 near the air inlet 8. Several air distribution holes 16 are evenly distributed on the buffer plates 15, and their lower ends are spaced apart from the bottom surface of the settling box 1. During operation, the high-speed dust-laden airflow first impacts the buffer plates 15, achieving uniform airflow distribution and velocity attenuation through the air distribution holes 16. This reduces the direct impact of the airflow on the filter cartridge 5, preventing increased local wear on the filter cartridge 5. Simultaneously, it promotes the premature settling of some coarse dust particles near the buffer plates 15 due to reduced kinetic energy, improving the primary dust removal effect. Obviously, the number of buffer plates 15 can also be increased or decreased, flexibly adjusted according to the actual airflow and dust concentration to optimize airflow organization and improve the stability and adaptability of the dust removal device.
[0027] In one preferred embodiment, the buffer plate 15 is inserted into the settling tank 1. A guide seat 17 is provided at a corresponding location within the settling tank 1 for the side of the buffer plate 15 to be inserted. A limiting plate 18 is provided on the upper part of the buffer plate 15, overlapping the upper end of the guide seat 17. A cover plate 19 is detachably provided at the upper end of the settling tank 1, in the area of the buffer plate 15. This insertion structure allows for quick assembly and disassembly of the buffer plate 15, facilitating the cleaning of adhering dust or replacement with buffer plates 15 of different apertures to adapt to different working conditions. The limiting plate 18 ensures the buffer plate 15 is properly installed and prevents it from falling off during operation. The detachable upper cover plate 19 provides top operating space for the maintenance of the buffer plate 15. The cover plate 19 can be connected to the settling tank 1 by bolts 22 or hooks, allowing for maintenance without disassembling the entire equipment, significantly improving the maintainability and operational continuity of the equipment.
[0028] As a preferred technical solution in this embodiment, chamfers 20 are provided at the lower corners on both sides of the buffer plate 15. This prevents the corners from getting stuck or scratching the guide seat 17 during the insertion and removal of the buffer plate 15, protects the structural integrity, ensures smooth disassembly and assembly, and improves the convenience of operation and the service life of the equipment.
[0029] As a preferred technical solution in this embodiment, the buffer plate 15 is provided with a handle 21. The handle 21 makes it easy for operators to grip and pull out or insert the buffer plate 15 during equipment maintenance. Especially in situations with a lot of dust and a dirty environment, it can achieve quick and labor-saving disassembly and assembly operations, further improving the operability and maintenance efficiency of the equipment.
[0030] In one preferred embodiment, the cover 10 is connected to the conduit 9 by bolts 22. The bolt connection ensures good sealing and structural strength between the cover 10 and the conduit 9, preventing the cover 10 from loosening and leaking air due to vibration during operation. The detachable design also facilitates periodic opening and replacement of the filter cartridge 5 or inspection of the internal structure, balancing sealing reliability and maintenance convenience. Obviously, existing common methods such as snap-fit or fasteners can also be used for connection.
[0031] As a preferred technical solution in this embodiment, the filter cartridge 5 is a composite fiber filter cartridge 5. The composite fiber filter cartridge 5 has the advantages of high filtration accuracy, good air permeability, wear resistance, and strong moisture resistance. It can effectively intercept fine dust, extend the dust cleaning cycle, and its material is suitable for dry recycling. The collected dust is pure and not easy to caking, and can be directly reused in the fine powder formulation of the same raw material, realizing resource utilization and achieving the dual benefits of high-efficiency dust removal and circular economy.
[0032] The workflow is as follows: The dust-laden airflow from the screening equipment first enters the settling box 1 through the air inlet 8 at the top of the main body 6. Inside the settling box 1, larger dust particles naturally settle to the dust collection section 7 due to gravity, achieving initial dust removal. The remaining finer dust continues to flow forward with the airflow and comes into contact with the filter cartridge 5. This fine dust is filtered and trapped on the surface of the filter cartridge 5, while the purified gas passes through the inside of the filter cartridge 5 and enters the outlet box 11 via the connecting pipe 12 connected to the outlet end of the filter cartridge 5. Finally, the purified air is drawn out from the outlet of the outlet box 11 by the negative pressure fan 3. The discharged air can be further connected to the central dust removal system or the overall ventilation system of the workshop for secondary dust removal before being discharged, depending on the site conditions. The dust accumulated on the outer surface of the filter cartridge 5 and the bottom of the settling box 1 can be discharged by periodically opening the control valve 4 installed on the discharge pipe 13 for centralized treatment or recycling. This structure combines sedimentation and filtration to achieve multi-stage dust removal, improving overall dust collection efficiency. The converging design of the dust collection section 7 facilitates centralized dust emission, preventing clogging and ensuring stable and efficient equipment operation. Furthermore, the independent modular design allows for easy integration and installation with various screening equipment, enhancing its applicability.
[0033] In the description of the above embodiments, for the sake of brevity and clarity, some components and their specific structural details that are not directly related to the core innovation of this utility model have been omitted, such as the negative pressure fan 3 and the filter cartridge 5. These omitted parts all fall within the scope of existing technology, and those skilled in the art can fully implement the design and manufacture of these parts based on their professional knowledge and existing technical information. Therefore, they will not be described in detail here.
[0034] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. A dust removal device of a pre-mixed mortar raw material screening equipment, comprising a settling tank (1), a support (2) for supporting the settling tank (1), a negative pressure fan (3), a control valve (4), and a filter cartridge (5); characterized in that: The settling box (1) includes an upper main body (6) and a constricted dust collection part (7) located at the lower part of the main body (6); an air inlet (8) is provided on the upper part of the main body (6), and at least one filter cartridge (5) is provided on the main body (6) away from the air inlet (8); a guide tube (9) for the filter cartridge (5) to extend into is provided on the main body (6), and a cover (10) is detachably provided on the guide tube (9); an air outlet box is provided on the settling box (1). (11) The air outlet box (11) is provided with a through hole corresponding to the filter cartridge (5), and a connecting pipe (12) is provided at the through hole to connect with the filter cartridge (5); the filter cartridge (5) is installed in the guide tube (9) and the air outlet end is connected to the connecting pipe (12); the air outlet box (11) is provided with an air outlet, and the air inlet end of the negative pressure fan (3) is connected to the air outlet; the bottom of the settling box (1) is provided with a discharge pipe (13), and the control valve (4) is installed on the discharge pipe (13).
2. The dust extraction apparatus for pre-mixed mortar raw material screening equipment according to claim 1, characterized in that: Inside the settling box (1), guide rods (14) are respectively provided on both sides of the guide tube (9). The distance between the two guide rods (14) is less than the diameter of the filter cartridge (5). They are used to support and guide the filter cartridge (5) when it is disassembled and assembled. The other end of the guide rod (14) extends towards the corresponding connecting pipe (12) and is fixedly connected to the air outlet box (11).
3. Dust extraction device for a pre-mixed mortar raw material screening plant according to claim 1 or 2, characterized in that: Inside the settling box (1), near the air inlet (8), there is a buffer plate (15) with several air distribution holes (16) evenly distributed on the buffer plate (15), and its lower end is at a certain distance from the bottom surface of the settling box (1).
4. The dust extraction apparatus for pre-mixed mortar raw material screening equipment according to claim 3, characterized in that: The buffer plate (15) is inserted into the settling box (1). A guide seat (17) is provided in the settling box (1) for the side of the buffer plate (15) to be inserted. A limiting plate (18) is provided on the upper part of the buffer plate (15) to overlap with the upper end of the guide seat (17). A cover plate (19) is detachably provided at the upper end of the settling box (1) in the area of the buffer plate (15).
5. The dust extraction apparatus for pre-mixed mortar raw material screening equipment according to claim 4, characterized in that: The lower corners of both sides of the buffer plate (15) are chamfered (20).
6. The dust extraction apparatus for pre-mixed mortar raw material screening equipment according to claim 4, characterized in that: The buffer plate (15) is provided with a handle (21).
7. The dust extraction apparatus for pre-mixed mortar raw material screening equipment according to claim 5, characterized in that: The buffer plate (15) is provided with a handle (21).
8. Dust extraction device for a pre-mixed mortar raw material screening plant according to claim 1 or 2, characterized in that: The cover (10) is connected to the conduit (9) by bolts (22).
9. The dust extraction apparatus for pre-mixed mortar raw material screening equipment according to claim 3, characterized in that: The cover (10) is connected to the conduit (9) by bolts (22).
10. Dust extraction device for a pre-mixed mortar raw material screening plant according to claim 1 or 2, characterized in that: The filter cartridge (5) is a composite fiber filter cartridge.