Brushless booster fan for dust removal and pressurization

Abstract

The brushless booster fan comprises a positioning seat, a booster fan body is fixed to the right side of the top of the positioning seat in a clamped mode, an air inlet and an air outlet are formed in the center of the right side of the booster fan body and the rear side of the top of the booster fan body respectively, and an inner clamping ring is fixed to the inner side of the air inlet in a clamped mode; the right side of the inner clamping ring is fixedly connected with a corrugated air guide cylinder in a communicating mode, the right side of the corrugated air guide cylinder is fixedly connected with an annular frame, electric push rods are symmetrically fixed to the bottom of the annular frame front and back, the output ends of the bottoms of the electric push rods are rotationally connected with rotating rings, and the outer sides of the rotating rings are fixedly connected with wheel carriers; limiting rings are fixed to the outer edges of the front side and the rear side of the wheel frame in a surrounding mode, rolling wheels are rotationally matched with the outer sides of the limiting rings, the negative pressure air inlet point position of the device can be freely adjusted in a certain area or the device can be more conveniently communicated and in butt joint with a smoke exhaust pipeline, targeted suction operation is conducted, and the butt joint flexibility of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of dust removal fan technology, specifically a brushless booster fan for dust removal and pressurization. Background Technology

[0002] A blower is a common abbreviation for gas compression and gas conveying machinery. Typically, a blower consists of three parts: an impeller, a motor, and a casing. The motor rotates, driving the impeller to rotate, converting mechanical energy into gas pressure energy and kinetic energy. The gas is then conveyed out through ducts in the casing. A booster blower, also known as a desulfurization blower, is a key piece of equipment used to overcome the flue gas resistance of flue gas desulfurization devices, introducing raw flue gas into the desulfurization system, and stabilizing the outlet pressure of the boiler induced draft fan. Booster blowers are characterized by low head, high flow rate, and low speed operation, and include structures such as fan blades and a motor. A booster blower using a brushless motor is called a brushless booster blower.

[0003] The air inlets of existing brushless booster fans mostly adopt a fixed flange structure, and the negative pressure air inlet point is fixedly set inside the flange. This results in a small and singular range when it comes to external flue gas dust collection, poor suction effect, and poor flexibility. When connecting to the boiler exhaust pipe, it is also necessary to first align the entire fan and its flange coaxially before connecting with screws. If there is a height difference, the fan also needs to be raised as an auxiliary. The connection method is relatively simple and troublesome. Utility Model Content

[0004] The purpose of this utility model is to provide a brushless booster fan for dust removal and pressurization, which can freely adjust its negative pressure air inlet point within a certain area or more conveniently connect and connect with the smoke exhaust pipe to perform targeted suction operations and improve its connection flexibility. In addition, it can ensure the smooth flow of the air duct inside the corrugated air guide tube and avoid the occurrence of bends that affect the negative pressure suction intensity.

[0005] To achieve the above objectives, a brushless booster fan for dust removal and pressurization is provided, comprising a positioning base. A brushless motor is fixedly engaged on the top left side of the positioning base, and a booster fan is fixedly engaged on the top right side of the positioning base. A bearing bracket is mounted in the middle of the side opposite to the booster fan and the brushless motor. The right output end of the brushless motor passes through the bearing bracket and is inserted into the booster fan and fixedly connected to its impeller. An air inlet and an air outlet are respectively provided at the center of the right side and the rear of the top of the booster fan. An inner retaining ring is fixedly engaged on the inner side of the air inlet. A corrugated air guide tube is fixedly connected to the right side of the inner retaining ring. A ring frame is fixedly connected to the right side of the corrugated air guide tube. An outer retaining sleeve is fixedly connected to the right side of the ring frame. The inner side of the outer retaining sleeve is fixedly engaged with and connected to the exhaust pipe of the boiler. Electric push rods are symmetrically fixed at the bottom of the ring frame. A rotating ring is rotatably connected to the bottom output end of each electric push rod. A wheel frame is fixedly connected to the outer side of the rotating ring. Limiting rings are fixedly around the outer edges of the front and rear sides of the wheel frame. Rollers are rotatably fitted around the outer sides of the limiting rings. A base pad is installed directly below the positioning seat. A lifting cylinder is fixedly connected to the top center of the base pad. The top output end of the lifting cylinder is fixedly connected to the positioning seat. By threading the corrugated air guide tube inside the air inlet of the booster fan and using double electric push rods and rollers, the corrugated air guide tube can be freely positioned within its corrugated extension range. This allows the negative pressure air inlet point to be freely adjusted within a certain area or to be more conveniently connected to the exhaust pipe for targeted suction operations and improved docking flexibility. In addition, the base pad installed directly below the positioning seat and the lifting cylinder can be used to adjust the height range so that the air inlet of the booster fan can be flush with the ring frame, thereby ensuring the unobstructed airflow inside the corrugated air guide tube and avoiding angles that would affect the negative pressure suction intensity.

[0006] According to the aforementioned brushless booster fan for dust removal and pressurization, a tight-fitting flange is fixed around the outer side of the exhaust port to facilitate its sealed connection with the exhaust duct.

[0007] According to the aforementioned brushless booster fan for dust removal and pressurization, each roller has a rubber ring nested in the middle of its outer side, and the bottom of each rubber ring is in contact with the ground to maintain stability during transfer.

[0008] According to the aforementioned brushless booster fan for dust removal and pressurization, several telescopic bushings are symmetrically fixed to the top of the base pad in a cross shape, and the top ends of each telescopic bushing are fixedly connected to the positioning seat. This provides relative horizontal limitation for the positioning seat and the base pad.

[0009] According to the aforementioned brushless booster fan for dust removal and pressurization, buffer pads are nested and fixed on the outer side of each telescopic bushing, and the top side of each buffer pad is pressed and fitted against the positioning seat. This provides buffer protection between the positioning seat and the telescopic bushing when the lifting cylinder retracts.

[0010] According to the aforementioned brushless booster fan for dust removal and pressurization, handles are symmetrically fixed on both the front and rear sides of the ring frame, and anti-slip rubber sleeves are fitted onto the middle of the opposite side of each handle. This facilitates the free movement of the ring frame's outer clamping sleeve by the flexible hose control.

[0011] According to the aforementioned brushless booster fan for dust removal and pressurization, several sets of filter screens are equidistantly fitted onto the inner side of the corrugated air guide duct, with the mesh size of the filter screens decreasing sequentially from right to left. This provides multi-stage dust removal and isolation.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, a corrugated air guide tube is threaded onto the inner side of the air inlet of the booster fan and then equipped with dual electric push rods and rollers to allow for free positioning within the corrugated extension range. This allows for free adjustment of the negative pressure air inlet point within a certain area or easier connection and docking with the exhaust pipe for targeted suction operations and improved docking flexibility. In addition, a base pad is installed directly below the positioning seat and adjusted in the range of height using a lifting cylinder, ensuring that the air inlet of the booster fan is flush with the ring frame. This guarantees unobstructed airflow within the corrugated air guide tube and prevents angles from affecting the negative pressure suction intensity.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the connection structure of the corrugated air guide tube in a brushless booster fan for dust removal and pressurization according to the present invention.

[0017] Figure 2 This is a schematic diagram of the connection structure between the electric push rod and the wheel frame in a brushless booster fan for dust removal and pressurization according to this utility model;

[0018] Figure 3 This is a schematic diagram showing the distribution of the lifting cylinder and telescopic bushing in a brushless booster fan for dust removal and pressurization according to this utility model.

[0019] Figure 4 This is a schematic diagram of a brushless booster fan for dust removal and pressurization according to the present invention.

[0020] In the diagram: 1. Positioning seat; 2. Brushless motor; 3. Bearing bracket; 4. Booster fan; 5. Sealing flange; 6. Inner retaining ring; 7. Corrugated air guide tube; 8. Ring frame; 9. Outer retaining sleeve; 10. Electric push rod; 11. Rotary ring; 12. Wheel frame; 13. Limiting ring; 14. Roller; 15. Base pad; 16. Lifting cylinder; 17. Telescopic bushing; 18. Buffer pad ring; 19. Handle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a brushless booster fan for dust removal and pressurization, including a positioning base 1, a brushless motor 2 fixedly engaged on the top left side of the positioning base 1, and a booster fan 4 fixedly engaged on the top right side of the positioning base 1. A bearing bracket 3 is mounted on the middle of the side opposite to the booster fan 4 and the brushless motor 2. The right output end of the brushless motor 2 passes through the bearing bracket 3 and is inserted into the booster fan 4 and fixedly connected to its impeller. An air inlet and an air outlet are respectively provided at the center of the right side and the rear of the top of the booster fan 4. A tight-fitting flange 5 is fixedly surrounding the outer side of the air outlet; thus performing a basic negative pressure suction function.

[0023] An inner retaining ring 6 is fixedly engaged on the inner side of the air inlet. A corrugated air guide duct 7 is fixedly connected to the right side of the inner retaining ring 6. Several sets of filter screens are equidistantly engaged on the inner side of the corrugated air guide duct 7, with the mesh size of the filter screens decreasing from right to left. A ring frame 8 is fixedly connected to the right side of the corrugated air guide duct 7, and an outer retaining sleeve 9 is fixedly connected to the right side of the ring frame 8. The inner side of the outer retaining sleeve 9 is engaged and fixedly connected to the exhaust pipe of the boiler. Electric push rods 10 are symmetrically fixed at the bottom of the ring frame 8. The bottom output end of each device is rotatably connected to a rotating ring 11. A wheel frame 12 is fixedly connected to the outer side of the rotating ring 11. Limiting rings 13 are fixedly wrapped around the outer edges of the front and rear sides of the wheel frame 12. Rollers 14 are rotatably fitted to the outer side of the limiting rings 13. A rubber ring is nested in the middle of the outer side of each roller 14. The bottom of the rubber ring is pressed against the ground, which allows for free adjustment of the negative pressure air intake point within a certain area or more convenient connection and docking with the smoke exhaust pipe for targeted suction operations and improved docking flexibility.

[0024] A base pad 15 is mounted directly below the positioning seat 1. A lifting cylinder 16 is fixedly connected to the top center of the base pad 15. The top output end of the lifting cylinder 16 is fixedly connected to the positioning seat 1. Several telescopic bushings 17 are symmetrically fixed to the top of the base pad 15. The top of each telescopic bushing 17 is fixedly connected to the positioning seat 1. A buffer pad ring 18 is nested and fixed to the outside of each telescopic bushing 17. The top side of the buffer pad ring 18 is pressed and fitted against the positioning seat 1 to adjust the height range so that the air inlet of the booster fan can be flush with the ring frame, thereby ensuring the smooth flow of the air duct inside the corrugated air guide and avoiding the occurrence of bends that affect the negative pressure suction intensity.

[0025] Working principle: In this utility model, the corrugated air guide duct 7 is threadedly connected to the inner side of the air inlet of the booster fan 4 and is equipped with double electric push rods 10 and rollers 14 to freely position it within the corrugated extension range. This allows it to freely adjust its negative pressure air inlet point within a certain area or more conveniently connect and connect with the smoke exhaust pipe for targeted suction operations and improves its connection flexibility. In addition, a base pad 15 is installed directly below the positioning seat 1 and is used in conjunction with the lifting cylinder 16 to adjust the height range so that the air inlet of the booster fan 4 can be kept flush with the ring frame 8, thereby ensuring the smooth flow of the air duct inside the corrugated air guide duct 7 and avoiding the occurrence of bends that affect the negative pressure suction intensity.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A brushless booster fan for dust removal and pressurization, comprising a positioning base (1), characterized in that, A brushless motor (2) is fixedly engaged on the top left side of the positioning seat (1), and a booster fan (4) is fixedly engaged on the top right side of the positioning seat (1). A bearing bracket (3) is mounted on the middle of the side opposite to the booster fan (4) and the brushless motor (2). The right output end of the brushless motor (2) passes through the bearing bracket (3) and is inserted into the booster fan (4) and fixedly connected to its impeller. An air inlet and an air outlet are respectively provided at the center of the right side and the rear of the top of the booster fan (4). An inner retaining ring (6) is fixedly engaged on the inner side of the air inlet. A corrugated air guide duct (7) is fixedly connected to the right side of the inner retaining ring (6). A ring frame (8) is fixedly connected to the right side of the corrugated air guide duct (7). A ring frame (8) is fixedly connected to the right side of the ring frame (8). The outer sleeve (9) is connected and fixed to the exhaust pipe of the boiler. The bottom of the ring frame (8) is symmetrically fixed with electric push rods (10). The bottom output end of the electric push rods (10) is rotatably connected with a rotating ring (11). The outer side of the rotating ring (11) is fixedly connected with a wheel frame (12). The outer edges of the front and rear sides of the wheel frame (12) are fixedly surrounded by a limit ring (13). The outer side of the limit ring (13) is rotatably fitted with a roller (14). A base pad (15) is set directly below the positioning seat (1). A lifting cylinder (16) is fixedly connected to the top center of the base pad (15). The top output end of the lifting cylinder (16) is fixedly connected to the positioning seat (1).

2. The brushless booster fan for dust removal and pressurization as described in claim 1, characterized in that: A tight-fitting flange (5) is fixed around the outside of the exhaust port.

3. The brushless booster fan for dust removal and pressurization as described in claim 1, characterized in that: Each roller (14) has a rubber ring nested in the middle of its outer side, and the bottom of each rubber ring is in contact with the ground.

4. The brushless booster fan for dust removal and pressurization as described in claim 1, characterized in that: The top of the base pad (15) is symmetrically fixed with several telescopic bushings (17), and the top of each telescopic bushing (17) is fixedly connected to the positioning seat (1).

5. The brushless booster fan for dust removal and pressurization as described in claim 4, characterized in that: Each of the telescopic bushings (17) has a buffer pad ring (18) nested and fixed on its outer side, and the top side of the buffer pad ring (18) is pressed and fitted against the positioning seat (1).

6. The brushless booster fan for dust removal and pressurization as described in claim 1, characterized in that: The ring frame (8) is symmetrically fixed with handles (19) on the front and back sides, and anti-slip rubber sleeves are fitted on the middle of the opposite side of each handle (19).

7. The brushless booster fan for dust removal and pressurization as described in claim 1, characterized in that: The inner side of the corrugated air guide tube (7) is fitted with several sets of filter screens at equal intervals on the left and right, and the mesh size of the filter screens decreases from right to left.

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