A blower for mining machinery

Abstract

This utility model relates to the field of blower technology and discloses a blower for mining machinery, including a blower body, an inlet pipe and an outlet pipe on the blower body, a filter assembly at the end of the inlet pipe away from the blower body, a cleaning assembly inside the filter assembly, and an elastic component at the end of the filter assembly away from the inlet pipe. The filter assembly includes a filter housing at one end of the inlet pipe, and a filter screen inside the filter housing. The cleaning assembly includes two scrapers, each respectively located at both ends of the filter screen, and a compression spring is provided on the scraper side near the filter housing. The elastic component includes a retaining ring. This utility model, through the cooperation of the filter assembly, cleaning assembly, and elastic component, effectively solves the problems of vibration transmission, pipe damage, and filter screen clogging that exist in existing blowers during operation.

Description

Technical Field

[0001] This utility model relates to the field of blower technology, and specifically to a blower used in mining machinery. Background Technology

[0002] During the mining process, a large amount of harmful gases and dust are generated in the mine. Blowers can send fresh air into the mine and exhaust polluted air at the same time, creating a good working environment for miners. Through the powerful negative pressure effect, blowers can adsorb, transport and process dust particles, reduce dust pollution in the mining working environment and improve the cleanliness of the workplace.

[0003] For example, Chinese Patent Application No. 2023207169053 discloses a blower for mining machinery, including a blower base and a blower body. An air outlet hood is provided on one side of the blower body. A positioning block is fixedly connected to the bottom of the blower body. The positioning block is adapted to the positioning groove of the blower base. The blower base has two symmetrically distributed cavities on both sides of the positioning groove. The blower base is provided with a quick positioning structure for fixing the positioning block at each cavity. The quick positioning structure includes a sliding block slidably connected to the cavity of the blower base. This device can realize shock absorption protection of the blower body by setting a pressure-relieving support component between the blower base and the base. However, the air inlet of the blower is easily blocked, affecting its use.

[0004] Based on the above solutions, existing blowers generate vibrations during operation. If these vibrations are directly transmitted to the piping system, they can lead to problems such as pipe fatigue damage, loose connections, and increased noise. During operation, the blower and its pipes will experience relative displacement due to thermal expansion, contraction, or mechanical displacement, which can easily cause stress concentration and lead to pipe damage. Over time, dust and impurities can easily adhere to the surface of the filter screen, causing filter clogging, reduced ventilation capacity, and making cleaning troublesome. Utility Model Content

[0005] This invention provides a blower for mining machinery to solve the problems mentioned in the background art.

[0006] To solve the above problems, the present invention provides a blower for mining machinery, which adopts the following technical solution:

[0007] Includes a blower body, on which an air inlet pipe and an air outlet pipe are provided. A filter assembly is provided at the end of the air inlet pipe away from the blower body. A cleaning component is provided inside the filter assembly. An elastic component is provided at the end of the filter assembly away from the air inlet pipe.

[0008] The filter assembly includes a filter housing, which is disposed at one end of the air inlet pipe, and a filter screen is disposed inside the filter housing;

[0009] The cleaning assembly includes two scrapers, each of which is respectively disposed at both ends of the filter screen, and a compression spring is disposed on the side of the scraper near the filter housing;

[0010] The elastic component includes a fixing ring disposed on one side of the filter component. The surface of the fixing ring is provided with an elastic bellows. A positioning ring is provided at the end of the elastic bellows away from the fixing ring. A movable support plate is provided below the positioning ring.

[0011] Preferably, a motor is provided on one side of the blower body, a mounting frame is provided below the blower body, and a base is provided at the end of the mounting frame away from the blower body;

[0012] The base includes a mounting plate, which is located below the mounting frame. A spring shock absorber is provided at the end of the mounting plate away from the mounting frame, and a base plate is provided at the end of the spring shock absorber away from the mounting plate. A moving groove is provided at the position where the base plate connects with the movable support plate.

[0013] Preferably, there are four spring shock absorbers, each of which is respectively located at one of the four corners of the mounting plate surface. The mounting plate is fixedly connected to the mounting bracket by bolts.

[0014] Preferably, the filter housing has an internal movable cavity, the scraper is disposed inside the movable cavity, the movable cavity has a slide rail, and a limit groove is provided at the position where the scraper connects with the slide rail;

[0015] The scraper is provided with a cleaning brush on its surface, and ventilation grooves are formed on its surface.

[0016] Preferably, there are multiple cleaning brushes and ventilation slots, with the cleaning brushes and ventilation slots spaced apart on the scraper. The cleaning brushes are strip-shaped and have bristles on their surface.

[0017] Preferably, the surface of the scraper is provided with a connecting rod, the end of the connecting rod away from the scraper is provided with a wedge seat, one side of the wedge seat is provided with a wedge frame, the end of the wedge frame away from the wedge seat is provided with a cylinder, the end of the cylinder away from the wedge frame is provided with a fixing frame, and one end of the wedge frame is fixedly connected to a fixing ring.

[0018] Preferably, a limiting ring is provided at the end of the filter housing away from the air inlet pipe, and an elastic spring is provided at the end of the fixing ring near the limiting ring, with the end of the elastic spring away from the fixing ring fixedly connected to the filter housing.

[0019] The beneficial effects of the blower for mining machinery provided by this utility model are:

[0020] 1. This utility model uses a pressure sensor installed inside a fixed ring to monitor pressure changes during blower operation in real time. By comparing the pressure with a preset pressure, it automatically determines the blower's operating status. When the filter screen becomes clogged, it can automatically activate the cleaning component for cleaning, thus achieving intelligent monitoring and maintenance of the blower.

[0021] 2. This utility model uses cleaning components such as two scrapers, connecting rods, wedge seats, wedge frames, and cylinders. The extension and retraction of the cylinders drives the scrapers to move in opposite directions, thereby achieving automatic cleaning of the filter screen, avoiding filter screen clogging, ensuring ventilation capacity, and reducing the problems of reduced ventilation capacity and troublesome cleaning caused by filter screen clogging.

[0022] 3. This utility model effectively absorbs the vibration generated during the operation of the blower by setting up a spring shock absorber and an elastic bellows. The cooperation between the elastic bellows and the movable support plate in the elastic component not only plays a role in buffering and shock absorption, but also can adapt to the thermal expansion, cold contraction or mechanical displacement of the pipeline, thus solving the problems of easy damage and stress concentration at the connection of the existing blower pipeline. Attached Figure Description

[0023] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0024] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the base and elastic components of this utility model;

[0026] Figure 3 This is a partial cross-sectional view of the filter housing of the present invention;

[0027] Figure 4 This is a cross-sectional view of the filter assembly and elastic assembly of this utility model.

[0028] Figure 5 In this utility model Figure 4 Enlarged view of point A.

[0029] In the diagram: 1. Blower body; 2. Motor; 3. Mounting bracket; 4. Base; 41. Mounting plate; 42. Spring shock absorber; 43. Base plate; 5. Inlet duct; 6. Outlet duct; 7. Filter assembly; 71. Filter housing; 72. Filter screen; 73. Slide rail; 74. Limiting ring; 8. Cleaning assembly; 81. Scraper; 811. Cleaning brush; 812. Ventilation slot; 82. Connecting rod; 83. Wedge seat; 84. Wedge frame; 85. Cylinder; 86. Fixing frame; 9. Elastic spring; 10. Elastic assembly; 101. Fixing ring; 102. Elastic bellows; 103. Positioning ring; 104. Moving support plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0031] The number of any elements in the accompanying drawings is for illustrative purposes only and not as a limitation, and any naming is for distinction only and has no limiting meaning.

[0032] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0033] An embodiment of a blower for mining machinery provided by this utility model:

[0034] like Figures 1 to 5 As shown, a blower for mining machinery includes a blower body 1, an air inlet pipe 5 and an air outlet pipe 6 are provided on the blower body 1, a filter assembly 7 is provided at the end of the air inlet pipe 5 away from the blower body 1, a cleaning assembly 8 is provided inside the filter assembly 7, and an elastic assembly 10 is provided at the end of the filter assembly 7 away from the air inlet pipe 5.

[0035] In use, the filter assembly 7 is used to filter the air entering the blower to prevent impurities from entering and affecting the operation of the equipment. The cleaning assembly 8 is used to remove dust and impurities from the filter screen 72. The elastic assembly 10 plays a role in buffering and shock absorption.

[0036] like Figure 1 As shown, a motor 2 is provided on one side of the blower body 1, and a mounting bracket 3 is provided below the blower body 1. A base 4 is provided at the end of the mounting bracket 3 away from the blower body 1.

[0037] like Figure 2As shown, the base 4 includes a mounting plate 41, which is located below the mounting frame 3. A spring damper 42 is provided at the end of the mounting plate 41 away from the mounting frame 3, and a base plate 43 is provided at the end of the spring damper 42 away from the mounting plate 41. There are four spring dampers 42, which are respectively located at the four corners of the surface of the mounting plate 41. By setting the spring dampers 42, vibration is effectively absorbed during use, reducing the impact of vibration on the blower body 1 and surrounding equipment, reducing noise, and improving the stability and service life of the equipment. The mounting plate 41 is fixedly connected to the mounting frame 3 by bolts.

[0038] like Figure 1 , Figure 3 As shown, the filter assembly 7 includes a filter housing 71, which is disposed at one end of the air inlet pipe 5. A filter screen 72 is disposed inside the filter housing 71. By setting the filter screen 72, the air entering the blower is filtered to prevent impurities from entering the interior of the blower body 1 and to reduce wear on the blower blades, motor 2 and other components.

[0039] like Figure 4 As shown, the cleaning assembly 8 includes two scrapers 81, which are respectively disposed at both ends of the filter screen 72. A compression spring is disposed on the side of the scraper 81 near the filter housing 71. A connecting rod 82 is disposed on the surface of the scraper 81. A wedge seat 83 is disposed at the end of the connecting rod 82 away from the scraper 81. A wedge frame 84 is disposed on one side of the wedge seat 83. A cylinder 85 is disposed at the end of the wedge frame 84 away from the wedge seat 83. A fixing frame 86 is disposed at the end of the cylinder 85 away from the wedge frame 84.

[0040] like Figure 3 As shown, the filter housing 71 has an internal movable cavity, the scraper 81 is disposed inside the movable cavity, the movable cavity is provided with a slide rail 73, and a limit groove is provided at the position where the scraper 81 connects with the slide rail 73.

[0041] In use, the controller controls the cylinder 85 to retract, and the cylinder 85 drives the wedge frame 84 to move away from the wedge seat 83. Under the combined action of the wedge frame 84 and the wedge seat 83, the wedge seat 83 moves downward in the vertical direction. The connecting rod 82 rotates with the moving angle of the wedge seat 83. Under the action of the connecting rod 82, the connecting rod 82 pulls the scraper 81 to move along the slide rail 73, so that the two scrapers 81 move towards each other. During this process, the cleaning brush 811 on the scraper 81 cleans the filter screen 72.

[0042] like Figure 5As shown, a cleaning brush 811 is provided on the surface of the scraper 81, and a ventilation groove 812 is provided on the surface of the scraper 81. The number of cleaning brushes 811 and ventilation grooves 812 is multiple. The cleaning brushes 811 and ventilation grooves 812 are arranged alternately on the scraper 81. The cleaning brushes 811 are strip-shaped and the surface of the cleaning brushes 811 is provided with bristles.

[0043] During use, the cleaning brush 811 is used to clean the dust and impurities attached to the surface of the filter screen 72 to prevent the filter screen 72 from becoming clogged. The ventilation slot 812 is used to ensure air circulation and reduce the impact of cleaning the filter screen 72.

[0044] like Figure 4 , Figure 5 As shown, the elastic component 10 includes a fixing ring 101, which is disposed on one side of the filter component 7. An elastic bellows 102 is disposed on the surface of the fixing ring 101. A positioning ring 103 is disposed at the end of the elastic bellows 102 away from the fixing ring 101. A movable support plate 104 is disposed below the positioning ring 103. A movable groove is provided at the position where the bottom plate 43 is connected to the movable support plate 104. One end of the wedge frame 84 is fixedly connected to the fixing ring 101.

[0045] A limit ring 74 is provided at the end of the filter housing 71 away from the air inlet pipe 5, and an elastic spring 9 is provided at the end of the fixing ring 101 near the limit ring 74. The end of the elastic spring 9 away from the fixing ring 101 is fixedly connected to the filter housing 71.

[0046] In use, the flexible bellows 102 can act as a buffer when the filter assembly 7 is subjected to external force or internal pressure changes. The filter assembly 7 is elastically connected to the flexible bellows 102, thereby playing a role in shock absorption.

[0047] Existing blowers generate vibrations during operation. If these vibrations are directly transmitted to the piping system, they can lead to pipe fatigue damage, loose connections, and increased noise. During operation, the blower and its piping may experience relative displacement due to thermal expansion, contraction, or mechanical displacement, easily causing stress concentration and resulting in pipe damage. Over time, dust and impurities easily adhere to the surface of filter 72, causing blockage, reduced ventilation capacity, and difficult cleaning. To address this issue, the following measures are taken:

[0048] Due to construction requirements, some pipelines need to be connected to the air inlet pipe 5, extending the length of the air inlet pipe 5 and changing the position of the air inlet. However, the pipeline and the air inlet pipe 5 are generally rigidly connected, and the existing blower will generate vibration during operation, which will lead to pipeline fatigue damage, loosening of the connection, and increased noise. At this time, by setting up an elastic corrugated pipe 102, which is elastically connected to the pipeline through the positioning ring 103, the elastic corrugated pipe 102 has good flexibility and elasticity and can freely expand and contract within a certain range. The movable support plate 104 cooperates with the movable groove on the base plate 43 and can move within a certain range, that is, further buffering and shock absorption, improving its stability. By setting up the elastic corrugated pipe 102, the vibration generated by the airflow can be effectively absorbed and buffered, reducing the transmission of vibration, and at the same time reducing the noise generated by pipeline vibration. It effectively solves the problem that the relative displacement of the blower and its pipeline during operation due to thermal expansion, cold contraction or mechanical displacement can easily cause stress concentration and pipeline damage.

[0049] Meanwhile, the elastic component 10 is elastically connected to the filter housing 71 by the elastic spring 9. Under the action of the cylinder 85, the cylinder 85 pushes the fixing ring 101 in the elastic component 10 to move towards the filter housing 71. The elastic spring 9 is compressed. At this time, the fixing ring 101 enters the interior of the limiting ring 74. The fixing ring 101 and the limiting ring 74 are used to seal the connection and prevent air leakage at the connection.

[0050] When the blower starts, the motor 2 begins to run, driving the impeller inside the blower body 1 to rotate. The rotation of the impeller creates negative pressure at the air inlet pipe 5, and air enters through the elastic bellows 102. Then, it passes through the filter screen 72 in the filter assembly 7 to filter dust and impurities in the air. The filtered clean air is drawn in through the air inlet pipe 5, and after being compressed and accelerated inside the blower body 1, the air is discharged from the air outlet pipe 6, providing the high-pressure airflow required for mining machinery for various purposes such as ventilation, dust removal, and material conveying. During the above process, when the blower vibrates during operation, the spring in the spring damper 42 undergoes elastic deformation to absorb and buffer vibration energy, reducing the impact of vibration on the blower body 1 and surrounding equipment, thereby making the blower run more smoothly, reducing noise, and increasing service life.

[0051] It is worth noting that a pressure sensor is installed inside the fixed ring 101 to detect the pressure on the fixed ring 101 during blower operation. Under normal operating conditions, when external air passes through the elastic bellows 102, within a certain range, the larger the preset air intake volume, the greater the deformation of the elastic bellows 102 (the end of the elastic bellows 102 near the positioning ring 103 is not connected to a pipe). At this time, the elastic bellows 102 is compressed, and the positioning ring 103 drives the movable support plate 104 to move along the movable groove on the base plate 43 towards the elastic bellows 102. At this time, the pressure sensor detects an increase in the pressure value of the fixed ring 101. This pressure is recorded as the detected pressure, which is used to determine the actual air intake volume. By calculating the difference between the preset air intake volume and the actual air intake volume, it can be determined whether the blower is operating normally. Similarly, the pressure sensor detects the pressure of the fixed ring 101 at the preset air intake volume, which is recorded as the preset pressure. By calculating the difference between the detected pressure and the preset pressure, and comparing the difference between the detected pressure and the preset pressure with a standard threshold, it can be determined whether the blower is operating normally.

[0052] If the difference between the detected pressure and the preset pressure exceeds the standard threshold, it indicates that the filter 72 is clogged. This increases the resistance of airflow through the filter 72, causing the elastic bellows 102 to deform. At this point, the controller controls the cylinder 85 to contract, which in turn moves the wedge frame 84 away from the wedge seat 83. Under the combined action of the wedge frame 84 and the wedge seat 83, the wedge seat 83 moves downwards vertically. The connecting rod 82 rotates with the wedge seat 83, pulling the scraper 81 along the slide rail 73. This causes the two scrapers 81 to move towards each other, shortening the distance between them and extending the compression spring. During this process, the cleaning brush 811 on the scraper 81 cleans the filter 72, and the bristles on the cleaning brush 811 adhere to the filter 72. Dust and impurities on the screen 2 are brushed off, while the ventilation slot 812 ensures that air can still pass through normally during the cleaning process of the scraper 81, without affecting the air intake of the blower. Then, the controller controls the cylinder 85 to extend, and the cylinder 85 drives the wedge frame 84 to move towards the wedge seat 83. Under the joint action of the wedge frame 84 and the wedge seat 83, the wedge seat 83 moves upward in the vertical direction. The connecting rod 82 rotates with the moving angle of the wedge seat 83. Under the action of the connecting rod 82, the connecting rod 82 pulls the scraper 81 to move along the slide rail 73, so that the two scrapers 81 move towards each other, the compression spring is compressed, and the distance between the two scrapers 81 increases. During this process, the cleaning brush 811 on the scraper 81 cleans the filter screen 72, and the bristles on the cleaning brush 811 brush off the dust and impurities attached to the filter screen 72.

[0053] Repeating the above operation will cause the cleaning brush 811 on the scraper 81 to move back and forth, so as to thoroughly clean the filter screen 72, remove the dust and impurities on the filter screen 72, restore the filtration performance of the filter screen 72, and ensure the smooth air intake of the air inlet pipe 5.

[0054] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," which indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0055] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A blower for mining machinery, characterized in that: A blower for mining machinery, characterized in that: it includes a blower body (1), an air inlet pipe (5) and an air outlet pipe (6) are provided on the blower body (1), a filter assembly (7) is provided at the end of the air inlet pipe (5) away from the blower body (1), a cleaning assembly (8) is provided inside the filter assembly (7), and an elastic assembly (10) is provided at the end of the filter assembly (7) away from the air inlet pipe (5); The filter assembly (7) includes a filter housing (71), which is disposed at one end of the air inlet pipe (5), and a filter screen (72) is disposed inside the filter housing (71); The cleaning assembly (8) includes two scrapers (81), each of which is respectively disposed at both ends of the filter screen (72). A compression spring is provided on the side of the scraper (81) near the filter housing (71). The elastic component (10) includes a fixing ring (101) disposed on one side of the filter component (7). An elastic bellows (102) is disposed on the surface of the fixing ring (101). A positioning ring (103) is disposed at the end of the elastic bellows (102) away from the fixing ring (101). A movable support plate (104) is disposed below the positioning ring (103).

2. A blower for mining machinery according to claim 1, characterized in that: A motor (2) is provided on one side of the blower body (1), and a mounting frame (3) is provided below the blower body (1). A base (4) is provided at the end of the mounting frame (3) away from the blower body (1). The base (4) includes a mounting plate (41), which is located below the mounting frame (3). A spring shock absorber (42) is provided at one end of the mounting plate (41) away from the mounting frame (3), and a base plate (43) is provided at the other end of the spring shock absorber (42) away from the mounting plate (41). A moving groove is provided at the position where the base plate (43) connects with the movable support plate (104).

3. A blower for mining machinery according to claim 2, characterized in that: There are four spring shock absorbers (42), and the four spring shock absorbers (42) are respectively set at the four corners of the surface of the mounting plate (41). The mounting plate (41) is fixedly connected to the mounting bracket (3) by bolts.

4. A blower for mining machinery according to claim 1, characterized in that: The filter housing (71) has an internal movable cavity, the scraper (81) is disposed inside the movable cavity, the movable cavity is provided with a slide rail (73), and a limiting groove is provided at the position where the scraper (81) connects with the slide rail (73); The scraper (81) is provided with a cleaning brush (811) on its surface, and ventilation grooves (812) are provided on its surface.

5. A blower for mining machinery according to claim 4, characterized in that: The number of cleaning brushes (811) and ventilation slots (812) is multiple. The cleaning brushes (811) and ventilation slots (812) are spaced apart on the scraper (81). The cleaning brushes (811) are strip-shaped and the surface of the cleaning brushes (811) is provided with bristles.

6. A blower for mining machinery according to claim 1, characterized in that: A connecting rod (82) is provided on the surface of the scraper (81). A wedge seat (83) is provided at the end of the connecting rod (82) away from the scraper (81). A wedge frame (84) is provided on one side of the wedge seat (83). A cylinder (85) is provided at the end of the wedge frame (84) away from the wedge seat (83). A fixing frame (86) is provided at the end of the cylinder (85) away from the wedge frame (84). One end of the wedge frame (84) is fixedly connected to a fixing ring (101).

7. A blower for mining machinery according to claim 1, characterized in that: The filter housing (71) is provided with a limiting ring (74) at the end away from the air inlet pipe (5), and the fixed ring (101) is provided with an elastic spring (9) at the end near the limiting ring (74). The end of the elastic spring (9) away from the fixed ring (101) is fixedly connected to the filter housing (71).

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