Industrial water spraying and dust falling fan

By designing an adjustable atomized dust-reducing nozzle and a conical internally moving conical block, combined with the water tank partition structure and the water return system of the arc-shaped water-resistance plate, the problem of the existing water-spray dust-reducing fan is fixed, and the effect of flexibly adjusting the fog output range and improving the adaptability and stability of the equipment is achieved.

CN119801967AInactive Publication Date: 2025-04-11FOSHAN YUEGUI INTELLIGENT MANUFACTURING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510032364.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-09
Publication Date
2025-04-11
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing industrial water jet dust reduction fans have fixed fog output range, which is difficult to adapt to the dust reduction needs of different construction stages and spaces, resulting in too concentrated water mist and excessive local humidity in narrow spaces, affecting the working environment and equipment operation; in large sites, the fixed fog output range cannot cover a sufficient area, and the number of equipment needs to be increased, cost and management difficulty are increased.

Method used

An industrial water jet dust reduction fan is designed, using an adjustable atomized dust reduction nozzle and a conical internally moving conical block. The linear movement of the conical internally moving conical block is controlled through an electric push rod, and combined with the support and rotational ability of the elastic connector, the fog output range is flexibly adjusted. The water tank adopts a partitioned structure, and it is chosen to spray disinfectant water mist or clean water mist according to needs. The arc-shaped water-blocking plate prevents water droplets from splashing and recycles the dripping water in real time through the return hose.

Benefits of technology

It realizes flexible adjustment of the mist output range of the water-squirting dust-reducing fan, accurately dealing with complex and changeable industrial dust sources, avoiding dust-reduction blind spots and waste of resources, and enhancing the practicality and functionality of the equipment. The water tank partition structure and return water system improve the application adaptability of the equipment and the continuous operation time, reducing the cost of equipment and management difficulty.

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Abstract

The invention provides an industrial water spraying and dust falling fan which comprises a supporting steel stand column, an electric air outlet fan blade is fixedly connected to the upper end of the supporting steel stand column, a dense net surface outer cover plate is installed at the inner end of the electric air outlet fan blade, and an atomization water outlet disc is installed at the front end of the dense net surface outer cover plate. A plurality of atomizing dust-settling nozzles which are annularly arranged are arranged in the middle of the front end of the atomizing water outlet disc, a conical inner movable conical block is arranged among the atomizing dust-settling nozzles, and the conical inner movable conical block which is small in front and large in rear is controlled by an electric push rod to linearly move front and back; the atomizing dust-settling nozzle is firmly fixed on the inner side wall of the atomizing water outlet disc through the elastic connecting piece, the elastic connecting piece has supporting rigidity and elastic deformation capacity, the nozzle is guaranteed to be stable and allowed to rotate properly, and therefore the mist output range is flexibly expanded or adjusted, and complex and changeable industrial dust sources are accurately coped with; dust falling dead angles and resource waste are avoided, and the practicability and functionality of the equipment are enhanced.
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Description

Technical Field

[0001] The invention relates to an industrial water spray dust reduction fan, belonging to the technical field of dust reduction devices. Background Art

[0002] Industrial water spray dust suppression fan is a kind of equipment used in industrial environment, which is mainly composed of fan part and water spray part. The fan part usually includes components such as motor and fan blades. The motor drives the fan blades to rotate to generate strong airflow, the purpose of which is to make the air flow. The water spray part generally has components such as water storage container and nozzle. Water is transported to the nozzle through a certain power device (such as a water pump) so that the water is sprayed out in the form of mist.

[0003] A spray device for municipal dust reduction with Chinese patent number CN214486201U relates to the technical field of municipal dust reduction. The present invention comprises a support plate and an annular water pipe, the upper surface of the support plate is fixedly connected with a mounting column, the upper end of the mounting column is installed with a fan, the upper surface of the fan is fixedly connected with a plurality of evenly distributed water spray pipes, one end of the water spray pipe is fixedly connected with one side of the annular water pipe, and the lower part of the other side of the annular water pipe is fixedly connected with a water supply pipe, the present invention sprays water outward through the water spray pipe, and the sprayed water can be blown away when it falls on the front end of the fan, thereby increasing the spray range of the water and achieving a good dust reduction effect;

[0004] In an industrial environment, the location and range of dust sources are not fixed. If the mist output range of the water spray dust reduction fan cannot be adjusted, it will be difficult to meet the dust reduction needs of different construction stages at the same time. For some workshops with small spaces, if the mist output range cannot be adjusted, the water mist may be too concentrated in a limited space, resulting in excessive local humidity, affecting the workers' working environment and the normal operation of equipment. In large open industrial sites, the fixed mist output range may not cover a sufficient area, and more dust reduction equipment will be required to meet the needs, increasing equipment costs and management difficulties.

[0005] Therefore, an industrial water spray dust reduction fan is proposed. Summary of the invention

[0006] In view of this, the present invention provides an industrial water spray dust reduction fan to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the present invention is achieved as follows: an industrial water spray dust reduction fan comprises a reinforced external shell and a supporting steel body column, the upper end of the supporting steel body column is fixedly connected with an electric fan blade, the inner end of the electric fan blade is installed with a dense mesh outer cover plate, the front end of the dense mesh outer cover plate is installed with an atomizing water outlet disk, a plurality of annularly arranged atomizing dust reduction nozzles are arranged in the middle of the front end of the atomizing water outlet disk, a conical inner moving conical block is arranged between the plurality of atomizing dust reduction nozzles, one end of the atomizing dust reduction nozzle away from the conical inner moving conical block is fixedly connected with an elastic connecting piece, one end of the elastic connecting piece away from the conical inner moving conical block is fixedly connected with the inner side wall of the atomizing water outlet disk, an electric push rod is arranged at the rear end of the conical inner moving conical block, the conical inner moving conical block and the plurality of atomizing dust reduction nozzles are slidably connected, and the lower end of the supporting steel body column is fixedly connected with a water tank which cooperates with the atomizing water outlet disk.

[0008] Further preferably, a vertical inner column is fixedly connected to the inner end of the water tank, and the vertical inner column is located directly below the supporting steel body column.

[0009] Further preferably, both front and rear ends of the vertical inner column are fixedly connected with a sealing baffle plate interconnected with the inner wall of the water tank, and two first solenoid valve ports are provided at the upper end of the water tank.

[0010] Further preferably, the two first solenoid valve ports are respectively located on the left and right sides of the vertical inner column, and the upper ends of the first solenoid valve ports are fixedly connected with an infusion outer tube.

[0011] Further preferably, the upper end of the liquid infusion outer tube is interconnected with the atomization water outlet tray, and the liquid infusion outer tube is interconnected with a plurality of atomization dust suppression nozzles.

[0012] Further preferably, an arc-shaped water blocking plate is fixedly connected to the lower side of the front end of the atomizing water outlet disc, and two second solenoid valve ports are fixedly connected to the lower end of the arc-shaped water blocking plate.

[0013] Further preferably, the lower ends of the two second solenoid valve ports are fixedly connected with return hoses, and the lower ends of the two return hoses are interconnected with the water tank.

[0014] Further preferably, the two water return hoses extend to the left and right sides of the vertical inner column respectively, and the lower end of the water tank is fixedly connected to a bottom plate frame-type load-bearing frame.

[0015] Further preferably, movable self-locking wheels are installed at the triangular parts of the lower end of the base frame type load-bearing frame, and a pump is externally connected to the water tank.

[0016] Further preferably, the left side of the inner end of the water tank is filled with some disinfectant liquid, and the right side of the inner end of the water tank is filled with some clean water liquid.

[0017] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0018] 1. The present invention cleverly arranges the atomizing water outlet tray in the middle of the front end of the dense mesh outer cover plate. When the electric fan blades are running, the built-in pumping system is driven to synchronously open multiple atomizing dust reduction nozzles distributed in an array in the atomizing water outlet tray, and the liquid in the water tank is sucked into a fine and uniform mist for discharge. At the same time, the airflow output by the electric fan blades carries the atomized gas to diffuse to the target area of ​​the industrial space to achieve dust reduction. At the same time, the electric push rod controls the front small and rear large conical inner moving conical block to move linearly back and forth. It interacts closely with the atomizing dust reduction nozzle fixed to the inner wall of the atomizing water outlet tray by an elastic connector. The elastic connector has both supporting rigidity and elastic deformation capacity, which ensures the stability of the nozzle and allows it to rotate moderately, thereby flexibly expanding or adjusting the mist output range, accurately responding to complex and changeable industrial dust sources, avoiding dust reduction blind spots and resource waste, and enhancing the practicality and functionality of the equipment.

[0019] 2. The present invention sets the water tank as a partitioned structure, with two independent water storage tanks on the left and right separated by vertical inner columns. According to the requirements of different application scenarios, operators can fill the water storage tanks with a certain amount of disinfectant liquid or clean water liquid respectively. In areas where there is a risk of microbial contamination, disinfectant water mist can be sprayed, and clean water mist can be used when only physical dust reduction is required. This flexible choice greatly broadens the application field and adaptability of the equipment and meets the diverse industrial dust reduction needs.

[0020] 3. The present invention achieves multiple functions through the arc-shaped water blocking plate under the atomizing water outlet tray. On the one hand, it can effectively block the splashing of water droplets caused by air flow disturbance and uneven spraying of the nozzle, and keep the surrounding area of ​​the equipment dry and tidy. On the other hand, the two second solenoid valve ports thereon are connected to the corresponding water storage tank by means of a return hose, and the dripping water is recovered in real time to avoid waste of water resources, thereby improving the continuous operation time and stability of the equipment and ensuring that the dust reduction operation can be carried out sustainably and efficiently.

[0021] Fourth, the present invention provides the equipment with easy-to-move functionality through the movable self-locking wheels provided under the bottom frame type load-bearing frame. In the industrial site, the operator can manually push the equipment to the designated location easily according to the real-time changes of the dust source, and the self-locking function ensures the stability during operation.

[0022] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the shaft side structure of the water spray dust reduction fan of the present invention;

[0025] Figure 2 This is a schematic diagram of the explosion structure of the reinforced external shell of the present invention;

[0026] Figure 3 It is a schematic diagram of the enlarged structure of the atomizing water outlet disk of the present invention;

[0027] Figure 4 It is an enlarged structural schematic diagram of the atomizing dust suppression nozzle of the present invention;

[0028] Figure 5 It is a schematic diagram of the explosion structure of the atomizing water outlet disk of the present invention;

[0029] Figure 6 It is a schematic diagram of the internal structure of the water tank of the present invention;

[0030] Figure 7 It is a schematic diagram of the partially truncated and enlarged structure of the lower part of the supporting steel column of the present invention.

[0031] Figure numerals: 1. Reinforced external shell; 2. Electric fan blades; 3. Dense mesh outer cover plate; 4. Atomizing water outlet tray; 5. Conical inner moving conical block; 6. Elastic connecting piece; 7. Atomizing dust suppression nozzle; 8. Arc-shaped water blocking plate; 9. Water tank; 10. First solenoid valve port; 11. Infusion outer tube; 12. Supporting steel column; 13. Bottom plate frame-type load-bearing frame; 14. Movable self-locking wheel body; 15. Return hose; 16. Second solenoid valve port; 17. Electric push rod; 18. Vertical inner column; 19. Sealing baffle. DETAILED DESCRIPTION

[0032] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0033] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] like Figure 1-Figure 7As shown, an embodiment of the present invention provides an industrial water spray dust reduction fan, comprising a reinforced external shell 1 and a supporting steel column 12, the upper end of the supporting steel column 12 is fixedly connected to an electric fan blade 2, the inner end of the electric fan blade 2 is installed with a dense mesh outer cover plate 3, the front end of the dense mesh outer cover plate 3 is installed with an atomizing water outlet plate 4, the front end middle of the atomizing water outlet plate 4 is provided with a plurality of annularly arranged atomizing dust reduction nozzles 7, and a plurality of atomizing dust reduction nozzles 7 are provided between the plurality of atomizing dust reduction nozzles 7. The conical inner moving conical block 5 and the atomizing dust reduction nozzle 7 are fixedly connected with an elastic connecting piece 6 at one end away from the conical inner moving conical block 5. The elastic connecting piece 6 is fixedly connected with the inner wall of the atomizing water outlet tray 4 at one end away from the conical inner moving conical block 5. An electric push rod 17 is arranged at the rear end of the conical inner moving conical block 5. The conical inner moving conical block 5 and the multiple atomizing dust reduction nozzles 7 are slidingly connected. The lower end of the supporting steel body column 12 is fixedly connected with a water tank 9 which cooperates with the atomizing water outlet tray 4.

[0036] By cleverly placing the atomizing water outlet tray 4 in the middle of the front end of the dense mesh outer cover plate 3, when the electric fan blades 2 are running, the built-in pumping system is driven, so that the multiple atomizing dust reduction nozzles 7 distributed in an array in the atomizing water outlet tray 4 are opened synchronously, and the liquid in the water tank 9 is sucked into a fine and uniform mist and discharged. At the same time, the airflow output by the electric fan blades 2 carries the atomized gas to the target area of ​​the industrial space to achieve dust reduction. At the same time, the electric push rod 17 controls the front small and rear large conical inner moving conical block 5 to move linearly back and forth. It interacts closely with the atomizing dust reduction nozzle 7 fixed to the inner wall of the atomizing water outlet tray 4 by the elastic connecting member 6. The elastic connecting member 6 has both supporting rigidity and elastic deformation ability, which ensures the stability of the nozzle and allows it to rotate moderately, thereby flexibly expanding or adjusting the mist output range, accurately responding to complex and changeable industrial dust sources, avoiding dust reduction blind spots and resource waste, and enhancing the practicality and functionality of the equipment.

[0037] The inner end of the water tank 9 is fixedly connected to a vertical inner column 18, and the vertical inner column 18 is located directly below the supporting steel body column 12. The upper end of the water tank 9 is provided with two first solenoid valve ports 10, and the two first solenoid valve ports 10 are respectively located on the left and right sides of the vertical inner column 18. The upper end of the first solenoid valve port 10 is fixedly connected to an infusion outer tube 11, and the upper end of the infusion outer tube 11 is interconnected with the atomizing water outlet tray 4, and the infusion outer tube 11 is interconnected with multiple atomizing dust suppression nozzles 7. The lower end of the water tank 9 is fixedly connected to a base frame type load-bearing frame 13, and movable self-locking wheels 14 are installed at the lower triangle of the base frame type load-bearing frame 13. The water tank 9 is externally connected to a pump.

[0038] The movable self-locking wheel body 14 provided under the bottom frame type load-bearing frame 13 gives the equipment the functionality of easy mobility. In the industrial site, the operator can easily manually push the equipment to the designated location according to the real-time changes of the dust source, and the self-locking function ensures the stability during operation.

[0039] Example 2

[0040] like Figure 1 , Figure 6-Figure 7 As shown, in one embodiment, the front and rear ends of the vertical inner column 18 are fixedly connected with a sealing baffle 19 interconnected with the inner wall of the water tank 9, the front end lower side of the atomizing water outlet tray 4 is fixedly connected with an arc-shaped water blocking plate 8, the lower end of the arc-shaped water blocking plate 8 is fixedly connected with two second solenoid valve ports 16, the lower ends of the two second solenoid valve ports 16 are fixedly connected with a return hose 15, the lower ends of the two return hoses 15 are interconnected with the water tank 9, and the two return hoses 15 extend to the left and right sides of the vertical inner column 18 respectively, the inner end left side of the water tank 9 is filled with a number of disinfectant liquid, and the inner end right side of the water tank 9 is filled with a number of clean water liquid.

[0041] By setting the water tank 9 as a partitioned structure, two independent water storage tanks on the left and right are separated by the vertical inner column 18. According to the requirements of different application scenarios, the operator can fill a certain amount of disinfectant liquid or clean water into the water storage tank respectively. In areas where there is a risk of microbial contamination, choose to spray disinfectant water mist, and use clean water mist when only physical dust reduction is required. This flexible choice greatly broadens the application field and adaptability of the equipment and meets the diversified industrial dust reduction needs. At the same time, the arc-shaped water blocking plate 8 under the atomizing water outlet plate 4 plays multiple functions. On the one hand, it can effectively block the splashing of water droplets caused by air flow disturbance and uneven spraying of the nozzle, and keep the surrounding area of ​​the equipment dry and tidy. On the other hand, the two second solenoid valve ports 16 thereon are connected to the corresponding water storage tank by means of the return hose 15, and the dripping water is recovered in real time to avoid waste of water resources, thereby improving the continuous operation time and stability of the equipment and ensuring that the dust reduction operation can be carried out sustainably and efficiently.

[0042] When the present invention is working: the present invention sets the atomizing water outlet tray 4 at the front middle position of the dense mesh outer cover plate 3, and when the electric fan blade 2 is in operation, the multiple atomizing dust reduction nozzles 7 distributed in an array inside the atomizing water outlet tray 4 are started synchronously, and the liquid in the water tank 9 is sucked and discharged outward in a fine and uniform mist through the external bungee, and the airflow output by the electric fan blade 2 cooperates with the atomized gas to diffuse and spread to the target area of ​​the industrial space, thereby playing a role in dust reduction, and when the atomizing dust reduction nozzle 7 is started synchronously, the electric push rod 17 drives the conical inner moving conical block 5 with a small front and a large back shape to move linearly forward and backward, and in this process, it is closely attached to and slidably contacted with the atomizing dust reduction nozzle 7 which is firmly connected to the inner wall of the atomizing water outlet tray 4 through the elastic connecting piece 6, This enables the spraying angles of multiple atomizing dust reduction nozzles 7 to change synchronously according to actual dust reduction needs. The atomizing dust reduction nozzle 7 is firmly connected to the inner wall of the atomizing water outlet plate 4 via an elastic connector 6. The elastic connector 6 can provide a certain supporting rigidity to ensure the normal stability of the nozzle, and has good elastic deformation ability, allowing the nozzle to rotate moderately under force. At this time, as the conical inner moving conical block 5 continues to move forward, its contact area with the atomizing dust reduction nozzle 7 gradually increases, and its own shape is used to apply an oblique thrust to the nozzle, so that the mist output range is expanded. Conversely, the above multi-angle flexible adjustment of the mist output range of the atomizing water outlet plate 4 not only significantly enhances the ability to accurately handle complex and changeable industrial dust sources, but also has It effectively avoids the dust-reduction dead angle and resource waste problems caused by the fixed spraying range, and improves the practicality and functionality of the equipment under different working conditions. In addition, the water tank 9 adopts a partitioned structure, and is divided into two independent water storage tanks corresponding to the left and right by the vertical inner column 18. The two water storage tanks can be filled with a number of disinfectant liquids and a number of clean water liquids according to the differentiated needs of the actual application scenarios. The operator can conveniently and flexibly select the type of mist to be sprayed according to the specific requirements of the on-site operation, such as areas with risks of microbial contamination or places that only require physical dust reduction, which greatly expands the application field and adaptability of the equipment. In addition, during the mist spraying process, the arc-shaped water-blocking plate 8 arranged below the atomizing water outlet plate 4 can effectively block the Water droplets splash due to air flow disturbance or uneven spraying of the nozzle. On the other hand, the two second solenoid valve ports 16 on the arc-shaped water-blocking plate 8 are respectively connected to the water storage tanks at the corresponding positions through the return hose 15 adapted to be connected thereto, so that the dripping water can be recycled and reused in real time, avoiding the risk of waste of water resources and improving the continuous operation time and stability of the equipment. Finally, in the industrial site, the operator can use the movable self-locking wheel body 14 firmly installed under the bottom plate frame-type load-bearing frame 13 to manually move the equipment to the specified position according to the real-time changes of the dust source, the transfer of the operation area or the needs of equipment maintenance, and ensure the stability of the equipment during the operation through the self-locking function, which provides strong support for the efficient development of industrial dust reduction operations.

[0043] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An industrial water spray dust suppression fan, comprising a reinforced outer shell (1) and a supporting steel column (12), characterized in that: The upper end of the supporting steel column (12) is fixedly connected to an electric fan blade (2), the inner end of the electric fan blade (2) is installed with a dense mesh outer cover plate (3), the front end of the dense mesh outer cover plate (3) is installed with an atomizing water outlet disk (4), a plurality of annularly arranged atomizing dust reduction nozzles (7) are arranged in the middle of the front end of the atomizing water outlet disk (4), a conical inner moving conical block (5) is arranged between the plurality of atomizing dust reduction nozzles (7), and the atomizing dust reduction nozzles (7) are away from the conical inner moving conical block (5). One end of the moving cone block (5) is fixedly connected to an elastic connecting piece (6), and the end of the elastic connecting piece (6) away from the conical inner moving cone block (5) is fixedly connected to the inner wall of the atomizing water outlet plate (4). The rear end of the conical inner moving cone block (5) is provided with an electric push rod (17). The conical inner moving cone block (5) and a plurality of atomizing dust suppression nozzles (7) are slidably connected. The lower end of the supporting steel body column (12) is fixedly connected to a water tank (9) that cooperates with the atomizing water outlet plate (4).

2. An industrial water spray dust reduction fan according to claim 1, characterized in that: The inner end of the water tank (9) is fixedly connected to a vertical inner column (18), and the vertical inner column (18) is located directly below the supporting steel column (12).

3. An industrial water spray dust reduction fan according to claim 2, characterized in that: The front and rear ends of the vertical inner column (18) are fixedly connected to a sealing baffle (19) interconnected with the inner wall of the water tank (9), and the upper end of the water tank (9) is provided with two first solenoid valve ports (10).

4. An industrial water spray dust reduction fan according to claim 3, characterized in that: The two first electromagnetic valve ports (10) are respectively located on the left and right sides of the vertical inner column (18), and the upper end of the first electromagnetic valve port (10) is fixedly connected to an external infusion tube (11).

5. An industrial water spray dust reduction fan according to claim 4, characterized in that: The upper end of the liquid infusion outer tube (11) is interconnected with the atomization water outlet tray (4), and the liquid infusion outer tube (11) is interconnected with a plurality of atomization dust reduction nozzles (7).

6. The industrial water spray dust reduction fan according to claim 1, characterized in that: An arc-shaped water blocking plate (8) is fixedly connected to the lower side of the front end of the atomizing water outlet disc (4), and two second solenoid valve ports (16) are fixedly connected to the lower end of the arc-shaped water blocking plate (8).

7. An industrial water spray dust reduction fan according to claim 6, characterized in that: The lower ends of the two second solenoid valve ports (16) are fixedly connected to a water return hose (15), and the lower ends of the two water return hoses (15) are communicated with the water tank (9).

8. An industrial water spray dust reduction fan according to claim 7, characterized in that: The two water return hoses (15) extend to the left and right sides of the vertical inner column (18) respectively, and the lower end of the water tank (9) is fixedly connected to a bottom plate frame-type load-bearing frame (13).

9. An industrial water spray dust reduction fan according to claim 8, characterized in that: The bottom triangle of the bottom plate frame type load-bearing frame (13) is equipped with movable self-locking wheels (14), and the water tank (9) is externally connected to a pump.

10. The industrial water spray dust reduction fan according to claim 1, characterized in that: The left side of the inner end of the water tank (9) is filled with a certain amount of disinfectant liquid, and the right side of the inner end of the water tank (9) is filled with a certain amount of clean water.

Citation Information

Patent Citations

  • Spraying device for municipal dust fall

    CN214486201U