Fan capable of preventing leakage of harmful gas

Abstract

The utility model relates to the technical field of fans, and discloses a harmful gas leakage prevention fan which comprises a fan body, a cleaning assembly is arranged on the outer wall of the fan body, a frame is arranged on one side of the fan body, a dustproof net is fixedly connected in the frame, and a connecting assembly is arranged in the frame. The connecting assembly comprises a connecting column, the outer wall of the connecting column is fixedly connected to the interior of the frame, the connecting column is slidably connected to the interior of the fan, a clamping groove is formed in the fan, a connecting rod is slidably connected to the interior of the connecting column, and a conical column is fixedly connected to the outer wall of the connecting rod. The dustproof net is supported by the frame, the connecting column is inserted into the fan, the tension of the spring pushes the limiting plate to drive the connecting rod to reset, the conical column abuts against the ball in the connecting column to be embedded into the clamping groove to be locked, the effect that the filter net is convenient to disassemble and clean is achieved, and the problems that external dust is easily sucked into the filter net together, and the dust cannot be cleaned easily are solved. And therefore, the practicability of the fan is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially prevent harmful gas leak's fan. BACKGROUND

[0002] Fan is a kind of mechanical equipment for moving air or gas, usually by rotating impeller to produce airflow. Its main function is to realize the circulation flow of air by inhaling, compressing and discharging gas, for ventilation, pressurization, exhaust, gas delivery and other applications. The working principle of fan is that the impeller is rotated by motor drive, and the rotation of impeller produces airflow, inhales gas from one end and discharges it through the other end, so as to realize the flow of gas. In mine and some industrial sites, methane and other gases mixed with air are explosive. If there is no effective ventilation system, gas may accumulate and reach the explosion limit, triggering fire or explosion accident, so it is necessary to use fan to prevent harmful gas leakage.

[0003] Fan to prevent harmful gas leakage can be divided into various types, respectively axial fan, centrifugal fan and explosion-proof fan, etc. Different types of fan to prevent harmful gas leakage are suitable for different environments and needs, and the selection of appropriate fan type needs to be determined according to specific application scene, gas type, working environment and safety requirements. Among them, centrifugal fan produces centrifugal force through high-speed rotation of impeller, and then discharges gas from the center of fan. Compared with axial fan, centrifugal fan can usually produce higher pressure and is suitable for environments requiring higher wind pressure.

[0004] However, there is a major problem in the design of existing fan: during the air extraction process of fan, external dust is easily sucked into the interior of fan, resulting in dust accumulation in the interior of fan, which not only affects the working efficiency of fan, but also makes the later cleaning work more tedious. Especially when filter screen needs to be cleaned and maintained regularly, traditional fan often lacks convenient disassembly and cleaning mechanism, increasing the difficulty of manual operation. This not only reduces the practicability of fan, but also may cause fan to malfunction due to long-term dust accumulation, affecting overall working efficiency. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides fan to prevent harmful gas leakage, aiming at improving the problem that fan is easy to suck external dust into the interior during air extraction, resulting in dust accumulation in the interior which is not convenient to clean.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: fan to prevent harmful gas leakage, including fan, the fan outer wall is provided with cleaning assembly, the fan one side is provided with frame, the frame inside is fixedly connected with dust screen, the frame inside is provided with connecting assembly;

[0007] The connecting assembly comprises a connecting column, the outer wall of the connecting column is fixedly connected to the inside of the frame, the connecting column is slidingly connected to the inside of the fan, a clamping groove is formed in the inside of the fan, a connecting rod is slidingly connected to the inside of the connecting column, a conical column is fixedly connected to the outer wall of the connecting rod, a ball is slidingly connected to the inside of the connecting column, the ball is embedded in the clamping groove, the conical column abuts against the ball, and a reset assembly is arranged on the outer wall of the connecting rod.

[0008] As a further description of the above technical solution:

[0009] The reset assembly comprises a limiting plate, the limiting plate is fixedly connected to the outer wall of the connecting rod, a spring is sleeved on the outer wall of the connecting rod, one end of the spring is fixedly connected to one side of the limiting plate, and the other end of the spring is fixedly connected to the inside of the connecting column.

[0010] As a further description of the above technical solution:

[0011] The cleaning assembly comprises a motor, the outer wall of the motor is fixedly connected to the outer wall of the fan, a rotating shaft is fixedly connected to the output end of the motor, and a cleaning brush is fixedly connected to one end of the rotating shaft.

[0012] As a further description of the above technical solution:

[0013] The inside of the fan is rotationally connected with a one-way valve, and the one-way valve is used for preventing gas backflow.

[0014] As a further description of the above technical solution:

[0015] The inside of the fan is provided with a connecting groove, and the inside of the fan is fixedly connected with a convex strip.

[0016] As a further description of the above technical solution:

[0017] The inside of the fan is provided with a connecting strip, and the connecting strip is embedded in the connecting groove.

[0018] As a further description of the above technical solution:

[0019] One side of the connecting strip is fixedly connected with a sealing ring, and a groove is formed in the inside of the sealing ring.

[0020] As a further description of the above technical solution:

[0021] The groove is embedded in the convex strip.

[0022] The utility model has the advantages of the following:

[0023] 1. In the utility model, first dust screen is supported through frame, connecting column is inserted into fan, the tension of spring pushes the limit board to drive the connecting rod reset, the spheroid in connecting column is locked by the conical column embedding into the clamping groove, reach convenient to disassemble filter screen and clean's effect, solve the problem that fan is easy to suck the external dust into the inside together when pumping, cause internal soot is inconvenient to clean, improve the practicability of fan.

[0024] 2. In the utility model, sealing ring is embedded into connecting groove with fan through connecting strip, then sealing ring is fixed with fan through the convex strip and the groove embedding in fan, reach the effect of improving the sealing, solve the problem that harmful gas overflows from the gap when fan is used, improve the sealing of fan. DRAWINGS

[0025] Figure 1 It is the perspective view of fan of preventing harmful gas leakage provided in the utility model;

[0026] Figure 2 It is the internal structure schematic view of connecting column of fan of preventing harmful gas leakage provided in the utility model;

[0027] Figure 3 It is the structure schematic view of one-way valve of fan of preventing harmful gas leakage provided in the utility model;

[0028] Figure 4 It is Figure 3 The local enlarged structure schematic view in A place in the utility model.

[0029] Legend:

[0030] 1, fan; 2, frame; 3, dust screen; 4, motor; 5, rotating shaft; 6, cleaning brush; 7, connecting column; 8, clamping groove; 9, connecting rod; 10, spring; 11, limit board; 12, conical column; 13, spheroid; 14, one-way valve; 15, connecting groove; 16, convex strip; 17, connecting strip; 18, sealing ring; 19, groove. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] Refer to Figure 1 And Figure 2The utility model provides an embodiment: fan of preventing harmful gas leakage, fan 1 is provided with cleaning assembly on the outer wall, is used for carrying out automatic cleaning to dust screen 3 in the process of fan 1 operation, avoids the working efficiency of fan 1 because of dust accumulation, fan 1 one side is provided with frame 2, is used for providing stable support to dust screen 3, and frame 2 is fixedly connected with dust screen 3 in the inside, and dust screen 3 can effectively filter dust and particulate matter in the airflow of fan 1, ensure the cleaning and stable operation of internal components,

[0033] The connecting assembly includes a connecting column 7 fixedly connected to the inside of the frame 2, which is used to firmly connect the frame 2 with the fan 1. The connecting column 7 is slidingly connected to the inside of the fan 1, facilitating the installation and fixation of the frame 2. The fan 1 is provided with a clamping groove 8 in the inside, and the cooperation between the clamping groove 8 and the connecting column 7 can realize the stable installation of the frame 2. The connecting column 7 is slidingly connected with a connecting rod 9 in the inside, which plays a role in transmitting actions in the connecting assembly. The outer wall of the connecting rod 9 is fixedly connected with a conical column 12, which is used to cooperate with a spherical body 13 to realize the locking and fixation of the connecting column 7. The connecting column 7 is slidingly connected with the spherical body 13 in the inside, which is embedded with the clamping groove 8 and realizes reliable locking effect under the pushing of the conical column 12, thereby ensuring the stability of the frame 2 and the high-efficiency filtering performance of the dust screen 3. The outer wall of the connecting rod 9 is provided with a reset assembly, which is used to automatically restore the initial position of the connecting assembly after the installation or dismounting of the frame 2. The reset assembly includes a limiting plate 11 fixedly connected to the outer wall of the connecting rod 9 in the inside, which plays a role in limiting the sliding range of the connecting rod 9. The outer wall of the connecting rod 9 is sleeved with a spring 10, one end of which is fixedly connected to one side of the limiting plate 11, and the other end is fixedly connected to the inside of the connecting column 7. Through the elastic tension of the spring 10, the limiting plate 11 drives the connecting rod 9 to reset, thereby ensuring that the connecting assembly can quickly return to the initial state. The cleaning assembly includes a motor 4 fixedly connected to the outer wall of the fan 1, which provides a power source for driving the cleaning device. The output end of the motor 4 is fixedly connected with a rotating shaft 5, one end of which is fixedly connected with a cleaning brush 6. Through the rotation of the cleaning brush 6, the outer wall of the dust screen 3 is cleaned, avoiding the accumulation of dust on the dust screen 3 to affect the ventilation effect, thereby ensuring the long-term and efficient operation of the fan 1.

[0034] Specifically, when installing the dust screen 3, the dust screen 3 is firmly supported by the frame 2, and the design of the frame 2 ensures the stability and durability of the dust screen 3 inside the fan 1. The frame 2 is installed inside the fan 1 through the connecting column 7, which is firmly inserted into the specific installation position of the fan 1, ensuring that the dust screen 3 does not shift or loosen during the operation of the fan 1. The insertion structure of the connecting column 7 makes the installation of the dust screen 3 more simple and stable, and the ball 13 inside the connecting column 7 plays an important locking role. After the dust screen 3 is installed in place, the tension of the spring 10 is pushed by the limiting plate 11, which drives the connecting rod 9 to reset. The connecting rod 9 is tightly matched with the conical column 12, so that the ball 13 is pushed into the clamping groove 8, thereby firmly locking the dust screen 3 inside the fan 1, avoiding any shedding caused by vibration or improper operation. During the operation of the fan 1, in order to maintain the cleanliness of the dust screen 3, especially in places with more dust or complex working environment, it is necessary to clean the dust screen 3 regularly. When the dust screen 3 needs to be cleaned, the output end of the motor 4 drives the rotating shaft 5 to rotate, and the rotating shaft 5 is connected with the cleaning brush 6 to start a systematic cleaning of the outer wall of the dust screen 3. The rotation of the cleaning brush 6 can efficiently remove dust, impurities and other contaminants attached to the surface of the dust screen 3, ensuring that the dust screen 3 maintains good air permeability and filtering effect. This structure design not only makes the disassembly and cleaning of the dust screen 3 more convenient, but also improves the working efficiency of the fan 1 in long-term operation and the convenience of equipment maintenance.

[0035] Referring to Figure 3 and Figure 4, the fan 1 is internally rotatably connected with a one-way valve 14, the main function of the one-way valve 14 is to prevent the backflow of gas after the fan 1 stops running, ensure that the gas only flows in one direction, prevent harmful gas from entering the fan 1, and maintain the safety and stability of the system. The working principle of the one-way valve 14 is to automatically open under the pressure of the valve flap in the direction of the gas flow, and when the gas flow is reversed, the valve flap will be closed, thereby effectively preventing the backflow of gas and ensuring the operating efficiency of the fan 1. The fan 1 is internally provided with a connecting groove 15 for installing and connecting various components inside the fan 1. The fan 1 is fixedly connected with a protrusion 16 inside, which cooperates with a groove 19 on the sealing ring 18 to realize the sealing function and prevent gas leakage. The fan 1 is provided with a connecting strip 17, which is stably fixed together with multiple internal components through the embedded design with the connecting groove 15. The cooperation of the connecting strip 17 and the connecting groove 15 can firmly connect each part of the fan 1, ensure that the fan 1 does not loosen or shift during operation, and the connecting strip 17 is fixedly connected with a sealing ring 18 on one side. The sealing ring 18 plays a sealing role to prevent harmful gas from leaking through the connecting part during the operation of the fan 1. The sealing ring 18 is internally provided with a groove 19, which is embedded with the protrusion 16 inside the fan 1. When the connecting strip 17 is connected with the connecting groove 15, the sealing ring 18 is tightly attached to the inner wall of the fan 1, forming an effective airtight seal to ensure that the gas inside the fan 1 does not leak to the external environment, and improve the sealing performance and air tightness of the fan 1;

[0036] Specifically, when the fan 1 is installed with the equipment, in order to ensure the airtightness of gas circulation, the fan 1 and the equipment are reliably sealed and connected through the sealing ring 18. The sealing ring 18 is precisely embedded in the connecting groove 15 through the connecting strip 17, and is firmly connected with the fan 1, forming a first layer of sealing structure. The fitting design of the connecting strip 17 and the connecting groove 15 not only enhances the stability of the sealing ring 18, but also prevents loosening or falling caused by vibration or pressure change. In order to further improve the overall sealing effect, a precise fitting structure is provided between the sealing ring 18 and the fan 1. Specifically, the protrusion 16 inside the fan 1 is tightly embedded with the groove 19 on the sealing ring 18, and through this meticulous mechanical cooperation, a second layer of sealing protection is formed, further preventing the possibility of gas leakage. Such multi-level sealing design effectively enhances the safety and reliability of the fan 1 during operation, while avoiding energy loss and equipment performance degradation caused by gas leakage, significantly improving the overall working efficiency and operating stability of the fan 1 and the equipment.

[0037] Working principle: when using the fan of preventing harmful gas leakage, install the dust screen 3, the dust screen 3 is supported by the frame 2, the frame 2 is installed in the fan 1 by the connecting column 7, the connecting column 7 is inserted into the fan 1, then the tension of the spring 10 pushes the limiting plate 11 to drive the connecting rod 9 to reset, the connecting rod 9 drives the ball 13 in the connecting column 7 to stop by the conical column 12, the ball 13 is embedded in the clamping groove 8 to lock it, then when cleaning the dust screen 3 during the operation of the fan 1, the output end of the motor 4 drives the rotating shaft 5 to rotate, the rotating shaft 5 cleans the outer wall of the dust screen 3 by the cleaning brush 6, which achieves the effect of convenient disassembly and cleaning of the dust screen 3.

[0038] When the fan 1 is installed with the equipment, the fan 1 and the equipment are sealed by the sealing ring 18, the sealing ring 18 is embedded in the connecting groove 15 by the connecting strip 17 to connect with the fan 1, then the sealing ring 18 and the fan 1 are fixed by the convex strip 16 and the concave groove 19 in the fan 1, which achieves the effect of improving the sealing performance.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the person skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A fan for preventing harmful gas leakage, comprising a fan (1), characterized in that: The outer wall of the fan (1) is provided with a cleaning component, a frame (2) is provided on one side of the fan (1), a dustproof net (3) is fixedly connected to the inside of the frame (2), and a connecting component is provided inside the frame (2); The connecting assembly comprises a connecting column (7), the outer wall of the connecting column (7) is fixedly connected to the inside of the frame (2), the connecting column (7) is slidably connected to the inside of the fan (1), a slot (8) is provided inside the fan (1), a connecting rod (9) is slidably connected to the inside of the connecting column (7), a conical column (12) is fixedly connected to the outer wall of the connecting rod (9), a sphere (13) is slidably connected to the inside of the connecting column (7), the sphere (13) is engaged with the slot (8), the conical column (12) and the sphere (13) are abutted against each other, and a reset assembly is provided on the outer wall of the connecting rod (9).

2. The blower for preventing harmful gas leakage according to claim 1, characterized in that: The reset assembly includes a limit plate (11), the limit plate (11) is fixedly connected to the outer wall of the connecting rod (9), the outer wall of the connecting rod (9) is sleeved with a spring (10), one end of the spring (10) is fixedly connected to one side of the limit plate (11), and the other end of the spring (10) is fixedly connected to the inside of the connecting column (7).

3. The blower for preventing harmful gas leakage according to claim 1, characterized in that: The cleaning assembly comprises a motor (4), the outer wall of the motor (4) is fixedly connected to the outer wall of the fan (1), the output end of the motor (4) is fixedly connected to a rotating shaft (5), and one end of the rotating shaft (5) is fixedly connected to a cleaning brush (6).

4. The blower for preventing harmful gas leakage according to claim 1, characterized in that: A one-way valve (14) is rotatably connected inside the blower (1), and the one-way valve (14) is used to prevent gas from flowing back.

5. The blower for preventing harmful gas leakage according to claim 1, characterized in that: A connecting groove (15) is provided inside the fan (1), and a convex strip (16) is fixedly connected inside the fan (1).

6. The blower for preventing harmful gas leakage according to claim 1, characterized in that: A connecting strip (17) is provided inside the fan (1), and the connecting strip (17) is engaged with the connecting groove (15).

7. The blower for preventing harmful gas leakage according to claim 6, characterized in that: A sealing ring (18) is fixedly connected to one side of the connecting strip (17), and a groove (19) is provided inside the sealing ring (18).

8. The blower for preventing harmful gas leakage according to claim 7, characterized in that: The groove (19) is engaged with the convex strip (16).

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