Limestone powder bin with dust removal function
By introducing a drive motor to scrape off adhering powder and a multi-stage purification system into the limestone powder silo, the problems of difficult internal wall cleaning and dust pollution have been solved, improving cleaning efficiency and environmental safety, and meeting environmental protection requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BENXI FUJIA MINING CO LTD
- Filing Date
- 2025-03-13
- Publication Date
- 2026-05-01
AI Technical Summary
The existing limestone powder silo has difficulty in cleaning its inner walls. The powder adheres and accumulates, affecting the performance and strength of the silo. Manual cleaning is time-consuming and labor-intensive, and the lack of a dedicated dust removal device leads to dust pollution of the working environment, posing safety hazards and failing to meet environmental protection requirements.
The limestone powder silo is designed with built-in dust removal function. It uses a drive motor to drive a wear-resistant rubber scraper to remove the attached powder. It combines preliminary purification with purification liquid and deep purification with activated carbon packing to remove dust-laden gas. The air pump is used to extract the dust and the purification packing for multi-stage purification.
It achieves efficient removal of adhering powder, reduces cleaning costs, protects the silo structure, creates a healthy working environment, meets environmental protection requirements, and reduces dust pollution.
Smart Images

Figure CN224185453U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of limestone powder silo technology, and in particular to a limestone powder silo with a built-in dust removal function. Background Technology
[0002] Limestone powder is a powder produced by finely grinding limestone. It has wide applications in many industrial fields. For example, in the construction industry, it can be used as an admixture in concrete to improve its performance, strength, and durability. In the environmental protection field, it is often used in flue gas desulfurization processes, where it can chemically react with harmful gases such as sulfur dioxide, thereby reducing the emission of air pollutants. A limestone powder silo is a device used to store limestone powder.
[0003] The prior art discloses a limestone powder silo with application number 202122228220.8, including a silo body, a drying chamber, a storage chamber, a drying plate, a heating component, a stirring component, a lower drain, a first sealing door component, a feed inlet, a discharge outlet, and a second sealing door component. In use, limestone powder enters the drying chamber through the feed inlet, is heated by the heating component, and is stirred by the stirring component to prevent agglomeration and ensure thorough drying. The dried limestone powder enters the storage chamber through the lower drain and is discharged through the discharge outlet when needed. This design is simple in overall structure, ensures thorough drying, and prevents moisture regain, making it practical. However, the prior art still suffers from difficulties in cleaning the inner wall of the silo. Although the stirring component prevents agglomeration, there is no effective means to clean the powder adhering to the inner wall. Long-term accumulation not only takes up space and reduces capacity but also affects the performance and strength of the silo body. Manual cleaning is time-consuming, labor-intensive, and the dust removal effect is questionable. Without a dedicated dust removal device, dust is generated severely during material filling and discharging, polluting the working environment, endangering personnel health, posing safety hazards, and failing to meet environmental protection requirements. To address this issue, we propose a limestone powder silo with built-in dust removal function. Utility Model Content
[0004] To address the shortcomings mentioned above, this utility model provides a limestone powder silo with a built-in dust removal function, which can efficiently scrape off adhering powder without manual labor, thereby improving efficiency, reducing costs, and protecting the silo body. At the same time, it utilizes a purification liquid for initial purification, a porous limiting baffle for assistance, and an air pump to extract dust-laden gas, followed by deep purification through activated carbon packing, effectively reducing dust pollution, creating a healthy environment, and meeting environmental protection requirements.
[0005] To solve the above problems, the technical solution provided by this utility model is as follows:
[0006] A limestone powder silo with built-in dust removal function includes a silo body, a feeding pipe, a discharging pipe, and a drive motor. A support leg is fixedly installed at the lower end of the silo body, and the drive motor is fixedly installed at the upper middle part of the silo body. The output end of the drive motor is fixedly connected to a rotating shaft. A spiral blade and a stirring blade are fixedly installed on the rotating shaft. The spiral blade is disposed inside the discharging pipe. The rotating shaft is fixedly connected to a side wall scraper via a connecting rod one, and to a bottom wall scraper via a connecting rod two. A connecting port is provided on the right side of the silo body, extending into the interior of a purification chamber via a connecting pipe one. An air extraction port is provided at the upper right end of the purification chamber, connected to the air inlet of an air pump via a connecting pipe two.
[0007] Furthermore, the purification chamber contains a purification liquid, and a porous limiting partition is installed at the upper end of the purification liquid. The connecting pipe extends through the porous limiting partition into the purification liquid.
[0008] Furthermore, an exhaust port frame is installed on the left side of the exhaust port, and a purification packing and a baffle are provided inside the exhaust port frame. The baffle includes a left baffle and a right baffle, and the purification packing is filled between the left baffle and the right baffle.
[0009] Furthermore, a valve body is installed at one point on the connecting pipe.
[0010] Furthermore, the purification packing material is made of activated carbon.
[0011] Furthermore, both the side wall scraper and the bottom wall scraper are made of wear-resistant rubber material, and both the side wall scraper and the bottom wall scraper are in close contact with the inner wall of the hopper.
[0012] Compared with the prior art, the present invention has the following advantages:
[0013] 1. Driven by a motor, the rotating shaft causes the wear-resistant rubber side wall scrapers and bottom wall scrapers connected by the connecting rod to rotate in close contact with the inner wall of the silo, effectively and efficiently scraping away adhering powder. This innovative design completely eliminates the tediousness of manual cleaning, greatly improves cleaning efficiency, reduces cleaning costs, and effectively protects the silo structure, extending its service life. It is far superior to existing technologies in silo wall cleaning.
[0014] 2. Initial purification is achieved using a purification liquid, while porous limiting baffles ensure a stable purification process. A powerful air pump extracts the dust-laden gas, which is then further purified by activated carbon purification packing. This process significantly reduces dust pollution, creating a safe and healthy working environment for operators.
[0015] In summary, this type of limestone powder silo with built-in dust removal function has wide applicability, addressing the problems mentioned in the background section. These problems include difficulty in cleaning the inner wall of the silo, the presence of agitation components to prevent agglomeration, the lack of effective means to clean the powder adhering to the inner wall, long-term accumulation which not only takes up space and reduces capacity but also affects the silo's performance and strength. Manual cleaning is time-consuming, labor-intensive, and ineffective, with no dedicated dust removal device, resulting in severe dust generation during material injection and discharge, polluting the working environment, endangering personnel health, posing safety hazards, and failing to meet environmental protection requirements. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Explanation of key component symbols:
[0018] 1-Chamber body, 2-Support leg, 3-Injection pipe, 4-Discharge pipe, 5-Drive motor, 6-Rotating shaft, 7-Helical blade, 8-Connecting rod one, 9-Connecting rod two, 10-Side wall scraper, 11-Bottom wall scraper, 12-Agitator blade, 13-Connecting port, 14-Purification chamber, 15-Air pump, 16-Connecting pipe one, 17-Connecting pipe two, 18-Air extraction port, 19-Purification liquid, 20-Porous limiting partition, 21-Air extraction port outer frame, 22-Purification packing, 23-Left side baffle, 24-Right side baffle, 25-Valve body. Detailed Implementation
[0019] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and examples, but the examples given are not intended to limit the present utility model.
[0020] like Figure 1 As shown, the embodiment of this utility model includes a hopper body 1, a feeding pipe 3, a discharging pipe 4, and a drive motor 5. A support leg 2 is fixedly installed at the lower end of the hopper body 1, and a drive motor 5 is fixedly installed at the middle of the upper end of the hopper body 1. The output end of the drive motor 5 is fixedly connected to a rotating shaft 6. A spiral blade 7 and a stirring blade 12 are fixedly installed on the rotating shaft 6. The spiral blade 7 is arranged inside the discharging pipe 4.
[0021] The rotating shaft 6 is fixedly connected to the side wall scraper 10 via connecting rod 8, and to the bottom wall scraper 11 via connecting rod 9. Both the side wall scraper 10 and the bottom wall scraper 11 are made of wear-resistant rubber and are tightly fitted to the inner wall of the silo body 1. When the rotating shaft 6 rotates, the side wall scraper 10 rotates along the side wall of the silo body 1, and the bottom wall scraper 11 rotates along the bottom of the silo body 1. This scrapes off the limestone powder adhering to the side wall and bottom of the silo body 1, preventing limestone powder from accumulating on the silo wall, ensuring the cleanliness of the inside of the silo body 1, and also helping to improve the thoroughness of material discharge.
[0022] A connecting port 13 is provided on the right side of the chamber 1. The connecting port 13 extends into the interior of the purification chamber 14 through a connecting pipe 16. A valve body 25 is installed at the connecting pipe 16. An air extraction port 18 is provided at the upper right end of the purification chamber 14. The air extraction port 18 is connected to the air inlet of the air pump 15 through a connecting pipe 2 17.
[0023] The purification chamber 14 contains purification liquid 19. A porous limiting partition 20 is installed at the upper end of the purification liquid. A connecting pipe 16 extends through the porous limiting partition 20 into the purification liquid 19.
[0024] An external frame 21 is installed on the left side of the exhaust port 18. The external frame 21 contains purification packing 22 and baffles, including a left baffle 23 and a right baffle 24. The purification packing 22 is made of activated carbon and fills the space between the left baffle 23 and the right baffle 24. During material injection, discharge, or storage, dust-laden gas is generated within the silo 1. The valve 25 at the connecting pipe 16 is opened, and the exhaust pump 15 is started. The dust-laden gas in the silo 1 enters the connecting pipe 16 through the connecting port 13, then passes through the porous limiting partition 20 into the purification liquid 19 for preliminary purification. The preliminarily purified gas, under the action of the exhaust pump 15, enters the external frame 21 through the exhaust port 18, undergoes secondary purification by the purification packing 22, and is then discharged, thus achieving the dust removal function.
[0025] All electrical components mentioned in the text are electrically connected to an external controller and power supply, and the controller can be a conventional known device such as a computer that provides control.
[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A limestone powder silo with built-in dust removal function, comprising a silo body (1), a feeding pipe (3), a discharge pipe (4), and a drive motor (5), wherein a support leg (2) is fixedly installed at the lower end of the silo body (1), and the drive motor (5) is fixedly installed at the middle of the upper end of the silo body (1), the output end of the drive motor (5) is fixedly connected to a rotating shaft (6), and a spiral blade (7) and a stirring blade (12) are fixedly installed on the rotating shaft (6), wherein the spiral blade (7) is disposed inside the discharge pipe (4), characterized in that, The rotating shaft (6) is fixedly connected to the side wall scraper (10) via connecting rod one (8), and the rotating shaft (6) is fixedly connected to the bottom wall scraper (11) via connecting rod two (9). A connecting port (13) is provided on the right side of the chamber (1). The connecting port (13) extends into the interior of the purification chamber (14) via connecting pipe one (16). An air extraction port (18) is provided at the upper right end of the purification chamber (14). The air extraction port (18) is connected to the air inlet of the air pump (15) via connecting pipe two (17).
2. The limestone powder silo with built-in dust removal function as described in claim 1, characterized in that, The purification chamber (14) contains purification liquid (19), and a porous limiting partition (20) is installed at the upper end of the purification liquid. The connecting pipe (16) extends through the porous limiting partition (20) into the purification liquid (19).
3. A limestone powder silo with built-in dust removal function as described in claim 2, characterized in that, An exhaust port frame (21) is installed on the left side of the exhaust port (18). A purification packing (22) and a baffle are provided inside the exhaust port frame (21). The baffle includes a left baffle (23) and a right baffle (24). The purification packing (22) is filled between the left baffle (23) and the right baffle (24).
4. A limestone powder silo with built-in dust removal function as described in claim 3, characterized in that, A valve body (25) is installed at one (16) of the connecting pipe.
5. A limestone powder silo with built-in dust removal function as described in claim 4, characterized in that, The purification packing material (22) is made of activated carbon.
6. A limestone powder silo with built-in dust removal function as described in claim 5, characterized in that, Both the side wall scraper (10) and the bottom wall scraper (11) are made of wear-resistant rubber material, and both the side wall scraper (10) and the bottom wall scraper (11) are tightly fitted to the inner wall of the silo body (1).
Citation Information
Patent Citations
Limestone powder bin
CN215708806U