Self-cleaning dust removal filter screen for coal mine tunneling roadway
By adopting a rotating cleaning technology that links the cleaning frame with the fan in the dust removal system of coal mine tunneling roadways, the problem of easy clogging of the filter screen has been solved, automatic cleaning has been achieved, maintenance costs have been reduced and dust removal efficiency has been improved, and the system is adapted to the complex underground environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANKUANG ENERGY GRP CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-07-07
AI Technical Summary
The filters of traditional coal mine tunneling dust removal systems are prone to clogging, which leads to increased air resistance, reduced dust removal efficiency, frequent shutdowns for manual cleaning, affects operational continuity, and results in high maintenance costs.
The cleaning rack is linked to the fan blades, and automatically cleans the windward side of the filter screen by rotating the brush, achieving a self-cleaning function. The cleaning rack rotates synchronously with the fan blades to remove dust.
It enables automatic cleaning of the filter screen, reduces maintenance frequency and cost, improves dust removal efficiency and system reliability, and adapts to complex downhole environments.
Smart Images
Figure CN224462432U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of dust removal technology in mining, specifically a self-cleaning dust removal filter for coal mine tunneling roadways. Background Technology
[0002] In coal mine tunneling operations, a large amount of dust (such as coal dust and rock dust) is generated within the tunnels. If not removed in time, it can not only endanger the health of workers but also potentially cause safety accidents such as dust explosions. Traditional dust removal systems typically use fixed filters to intercept dust, but as dust accumulates, the filters easily become clogged, leading to increased air resistance and decreased dust removal efficiency. This necessitates frequent shutdowns for manual cleaning or filter replacement, severely impacting the continuity of tunneling operations. Furthermore, the underground environment is humid and subject to frequent vibrations, making manual cleaning difficult and maintenance costs high. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a self-cleaning dust removal filter screen for coal mine tunneling roadways that cleans the windward side of the filter screen by means of a rotating brush driven by a fan. By linking the cleaning structure with the fan drive, the filter screen is automatically cleaned during the dust removal process, solving the problems of easy clogging and frequent maintenance of traditional filter screens, and improving the system's operating efficiency and reliability.
[0004] The technical solution of this utility model is implemented as follows:
[0005] A self-cleaning dust collector filter for coal mine tunneling includes a dust collector housing, an air guide hood installed on the front side of the dust collector housing, a fan installed on the rear side of the dust collector housing and blowing air from the rear to the front, and a filter screen installed inside the dust collector housing. A cleaning frame that is always in contact with the windward side of the filter screen is installed inside the dust collector housing. The cleaning frame is concentrically connected to the rotating shaft of the fan blades inside the fan. The cleaning frame cleans the windward side of the filter screen by rotating and brushing with the fan blades.
[0006] By adopting the above solution, the cleaning frame of the self-cleaning dust collector filter screen in the coal mine tunneling roadway cleans the windward side of the filter screen by rotating and brushing with the fan blades. It has the following advantages: self-cleaning function, reducing maintenance costs; power sharing, compact and efficient structure; precise cleaning, improving filtration efficiency; extending filter screen life, reducing operating costs; adapting to complex working conditions, and high reliability.
[0007] As a preferred embodiment of a self-cleaning dust removal filter for coal mine tunneling roadways, the cleaning frame is a straight frame or a cross frame, which has better balance and stability during rotation, and does not occupy too much windward area; the surface of the cleaning frame facing the filter is covered with bristles or sponge, which removes dust through friction or scraping during rotation.
[0008] As a preferred embodiment of a self-cleaning dust collector filter screen for coal mine tunneling roadways, the dust collector housing is also equipped with support platforms distributed around the cleaning frame and higher than the cleaning frame, leaving sufficient space for the installation of the cleaning frame. The filter screen is placed on the support platform, at which time the cleaning frame and the windward side of the filter screen are in contact, ensuring close contact between the cleaning frame and the windward side of the filter screen. The support platform is drilled with screw holes, and the fan is fixed in the screw holes of the support platform by bolts, realizing the detachable connection between the fan and the dust collector housing, thus realizing the dual function of the support platform.
[0009] As a preferred embodiment of a self-cleaning dust collector filter for coal mine tunneling, the right end of the air guide hood is mounted on the dust collector housing via a hinge; the left end of the air guide hood is equipped with a main buckle that fixes it together with the dust collector housing, facilitating subsequent maintenance of the filter or cleaning frame.
[0010] As a preferred embodiment of a self-cleaning dust removal filter screen for coal mine tunneling roadways, in order to further improve dust removal efficiency, the number of fans is increased, wherein there are at least two fans, and all fans are linearly arrayed along the length of the dust removal housing. The rotating shaft of each fan blade is connected to a cleaning frame, the length of which is equal to the width of the filter screen, ensuring that the cleaning frame covers the entire width of the filter screen and avoiding cleaning dead corners.
[0011] After adopting the above technical solution, the beneficial effects of this utility model are:
[0012] 1. Self-cleaning function, reducing maintenance costs: The cleaning rack is concentrically connected to the fan blade shaft and rotates synchronously with the fan. During the operation of the dust removal system, it continuously cleans the windward side of the filter screen to avoid dust accumulation and blockage. It eliminates the need for frequent manual cleaning, greatly reducing downtime for maintenance, and is especially suitable for high dust and harsh environments underground.
[0013] 2. Power sharing, compact and efficient structure: The cleaning frame is powered directly by the rotation of the fan blades, without the need for an additional drive motor or transmission device. This simplifies the mechanical structure, reduces the number of parts and space occupation, and lowers energy consumption, meeting the requirements of lightweight and low power consumption for downhole equipment.
[0014] 3. Precise cleaning to improve filtration efficiency: The cleaning rack is always in contact with the windward side of the filter (the area where dust is most likely to accumulate). The friction or scraping action of the brush bristles / sponge removes dust in a timely manner, avoiding increased filtration resistance and decreased efficiency, and maintaining the long-term high-efficiency operation of the dust removal system.
[0015] 4. Extend filter life and reduce overall costs: Continuous automatic cleaning reduces the dust load on the filter, delays performance degradation caused by clogging and wear, reduces the frequency of filter media replacement, and lowers labor and material costs.
[0016] 5. Adaptable to complex working conditions and highly reliable: Self-cleaning is achieved through mechanical linkage, without being restricted by personnel operation. It can autonomously complete cleaning tasks during equipment operation, adapting to complex environments such as underground vibration and humidity, ensuring the stability and safety of the dust removal system. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.
[0018] Figure 1 Three-dimensional structure of self-cleaning dust collector filter for coal mine tunneling roadways Figure 1 ;
[0019] Figure 2 Three-dimensional structure of self-cleaning dust collector filter for coal mine tunneling roadways Figure 2 ;
[0020] Figure 3 A front view of a self-cleaning dust collector filter screen for a coal mine tunneling roadway;
[0021] Figure 4 for Figure 1 Three-dimensional structural diagram of the central air guide shield after deployment;
[0022] Figure 5 To hide Figure 4 Three-dimensional structural diagram of the structure behind the central air guide cover;
[0023] Figure 6 for Figure 5 A 3D structural diagram of the cleaning rack;
[0024] Figure 7 for Figure 4 A magnified view of a portion of point A in the middle.
[0025] The markings in the diagram are: 1-Dust collector housing; 2-Air guide hood; 3-Fan; 4-Filter screen; 5-Cleaning rack; 6-Brush bristles; 7-Support platform; 8-Hinge; 9-Main buckle. Detailed Implementation
[0026] 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.
[0027] like Figures 1 to 5 As shown, a self-cleaning dust collector filter screen for coal mine tunneling is provided for underground dust removal. Specifically, it includes a dust collector housing 1, an air guide hood 2 installed on the front side of the dust collector housing 1, a fan 3 installed on the rear side of the dust collector housing 1 and supplying air from rear to front, and a filter screen 4 installed inside the dust collector housing 1. A cleaning frame 5, which is always in contact with the windward surface of the filter screen 4, is installed inside the dust collector housing 1. The cleaning frame 5 is concentrically connected to the rotating shaft of the fan blades inside the fan 3. The cleaning frame 5 cleans the windward surface of the filter screen 4 by rotating and brushing along with the fan blades of the fan 3. Figure 5 As shown, there are three fans 3, all arranged in a linear array along the length of the dust collector housing 1, which further improves dust removal efficiency. Each fan 3's blade shaft is connected to a cleaning frame 5, the length of which is equal to the width of the filter screen 4, ensuring that the cleaning frame 5 covers the entire width of the filter screen 4 and avoids cleaning dead zones. The cleaning frame 5 of this self-cleaning dust collector filter in the coal mine tunneling roadway cleans the windward side of the filter screen 4 by rotating and brushing along with the fan 3 blades. It has the following advantages: self-cleaning function, reducing maintenance costs; power sharing, compact and efficient structure; precise cleaning, improving filtration efficiency; extending the life of the filter screen 4, reducing operating costs; adapting to complex working conditions, and high reliability.
[0028] like Figure 6 As shown, cleaning rack 5 is a straight rack, which does not take up too much windward area; of course, it could also be a cross rack, which has better balance and stability when rotating; continuing as... Figure 6 As shown, the surface of the cleaning rack 5 facing the filter screen 4 is covered with bristles 6, which remove dust through friction or scraping during rotation; of course, it can also be a sponge, which is suitable for scenarios with high dust humidity. The sponge can absorb dust and squeeze it out to avoid secondary dust.
[0029] like Figure 4 As shown, the dust collector housing 1 also has support platforms 7 distributed around the cleaning rack 5 and higher than the cleaning rack 5, providing sufficient space for the installation of the cleaning rack 5. The filter screen 4 is placed on the support platform 7, at which point the cleaning rack 5 and the windward side of the filter screen 4 are in contact, ensuring close contact between the cleaning rack 5 and the windward side of the filter screen 4; continuing as... Figure 4 As shown, the support platform 7 has screw holes drilled inside. The fan 3 is fixed to the screw holes of the support platform 7 by bolts, so as to realize the detachable connection between the fan 3 and the dust collector housing 1, thereby realizing the dual function of the support platform 7.
[0030] like Figure 7 As shown, the right end of the air guide shroud 2 is rotatably mounted on the dust collector housing 1 via hinge 8; as Figure 4As shown, a main buckle 9 is installed on the left end of the air guide hood 2 to fix it together with the dust collector housing 1. By rotating the air guide hood 2 to the open state through the hinge 8, the internal components can be inspected or replaced. The operation is convenient and reduces downtime.
[0031] The above are merely preferred embodiments of the present utility model and are 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 shall be included within the protection scope of the present utility model.
Claims
1. A self-cleaning dust collector filter screen for coal mine tunneling roadways, comprising a dust collector housing, an air guide hood installed on the front side of the dust collector housing, a fan installed on the rear side of the dust collector housing and blowing air from the rear to the front, and a filter screen installed inside the dust collector housing; Its features are: The dust collector housing is equipped with a cleaning frame that is always in contact with the windward side of the filter screen. The cleaning frame is concentrically connected to the rotating shaft of the fan blades inside the fan. The cleaning frame cleans the windward side of the filter screen by rotating and brushing along with the fan blades.
2. The self-cleaning dust collector filter for coal mine tunneling as described in claim 1, characterized in that: The cleaning rack is either a straight rack or a cross rack.
3. The self-cleaning dust collector filter for coal mine tunneling as described in claim 2, characterized in that: The cleaning rack has a surface covered with bristles or a sponge facing the filter.
4. The self-cleaning dust collector filter for coal mine tunneling as described in claim 1, characterized in that: The dust removal housing is also equipped with support platforms distributed around the cleaning rack and higher than the cleaning rack. The filter screen is placed on the support platform, at which time the cleaning rack and the windward side of the filter screen are in contact.
5. The self-cleaning dust collector filter for coal mine tunneling roadways according to claim 4, characterized in that: The support platform has screw holes drilled inside, and the fan is fixed to the screw holes of the support platform by bolts.
6. The self-cleaning dust collector filter for coal mine tunneling as described in claim 1, characterized in that: The right end of the air guide shroud is hinged and rotated onto the dust collector housing.
7. The self-cleaning dust collector filter for coal mine tunneling as described in claim 6, characterized in that: The left end of the air guide shroud is fitted with a main buckle that secures it together with the dust collector housing.
8. The self-cleaning dust collector filter for coal mine tunneling as described in claim 1, characterized in that: There are at least two fans, and all fans are arranged in a linear array along the length of the dust collector housing. The shaft of each fan blade is connected to a cleaning frame, and the length of the cleaning frame is equal to the width of the filter screen.