Fan with safety protection device

Abstract

The utility model discloses a draught fan with a safety protection device in the technical field of draught fans, which comprises a draught fan, a protection shell and a protection mechanism, an installation groove is arranged in the protection shell, the draught fan is fixedly connected in the installation groove, an air outlet grating is arranged on one side of the protection shell, an air inlet channel is arranged in the protection shell, and the protection mechanism is arranged in the air inlet channel. The air inlet channel communicates with the air inlet, and the protection mechanism is connected to the protection shell and used for controlling opening and closing of the air inlet channel. The fan has the advantages that opening and closing of the air inlet channel can be controlled by adjusting the protection plate in the protection mechanism, the air inlet channel is closed when the fan does not run, sundries are effectively prevented from entering the fan through the air inlet channel, and the dust is effectively prevented from entering the fan through the dustproof net in the detachable dustproof frame. And when the draught fan operates, sucked air can be filtered, dust is prevented from entering the draught fan during operation, and meanwhile, the dustproof frame can be detached and cleaned conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan with a safety protection device. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Fan is the abbreviation of gas compression and gas transportation machinery. Commonly referred to fans include ventilators, blowers, and wind turbines.

[0003] In the prior art, however, when the fan is in use, the air inlet is not protected, and the fan strengthens the flow of air, which easily drives dust in the air through the fan, causing the dust to adhere to the inner wall and blades of the fan, posing certain safety hazards. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing fans lack effective protection, so that dust and impurities are easily introduced into the fans, causing potential safety hazards.

[0005] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0006] A fan with a safety protection device comprises a fan, the fan comprising a shell, a motor is provided on one side of the shell, a connecting shaft is fixedly connected to the output end of the motor, an air inlet is provided on the other side of the shell, the air inlet is fixedly connected to a support frame, the connecting shaft rotates through the shell and is rotatably connected to the support frame, a fan blade is fixedly connected to the connecting shaft, and also comprises a protective shell and a protective mechanism, the motor is fixed to the outside of the protective shell, the connecting shaft rotates through the protective shell, a mounting groove is provided in the protective shell, the fan is fixed in the mounting groove, an air outlet pipe is fixedly connected to and connected to one side of the shell, an air outlet grille is provided on one side of the protective shell, the air outlet pipe is connected to the air outlet grille, an air inlet channel is provided in the protective shell, the air inlet channel is connected to the air inlet, and the protective mechanism is connected to the protective shell for controlling the opening and closing of the air inlet channel.

[0007] Furthermore, the protective mechanism includes a protective plate, a connecting groove is provided in the protective shell, the connecting groove is connected to one side of the air intake passage, the protective plate is slidably provided in the connecting groove, and the protective plate covers the air intake passage.

[0008] Furthermore, a connecting rod is fixedly connected to one side of the protective plate, a sliding rail groove is provided on one side of the connecting groove, the sliding rail groove passes through one side of the protective shell, the connecting rod is slidably arranged in the sliding rail groove, and a shift block is fixedly connected to the end of the connecting rod.

[0009] Furthermore, thread grooves are provided at both ends of the slide rail groove, a fastening ring is rotatably provided on the connecting rod, a connecting ring is fixedly connected to one side of the fastening ring, and the connecting ring is threadedly connected and adapted to the thread groove.

[0010] Furthermore, a limiting block is fixedly connected to the other side of the protective plate, and a limiting groove is provided on the other side of the connecting groove, and the limiting block is slidably adapted in the limiting groove.

[0011] Furthermore, the protection mechanism also includes a dustproof frame, which is threadedly connected to the air inlet channel, and a dustproof net is fixedly connected to the dustproof frame.

[0012] Furthermore, a limiting ring is fixed in the air intake passage, and the dustproof frame abuts against the limiting ring.

[0013] The beneficial effects achieved by the utility model using the above structure are as follows:

[0014] 1: By adjusting the protective plate in the protective mechanism, the opening and closing of the air intake channel can be controlled, and then the air intake channel can be closed when the fan is not running, effectively preventing debris from entering the fan through the air intake channel;

[0015] 2: Through the dust net in the detachable dust frame, the inhaled air can be filtered when the fan is running, thereby preventing dust from entering when the fan is running, and at the same time, the dust frame can be easily disassembled and cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional Figure 1 .

[0017] Figure 2 The three-dimensional Figure 2 .

[0018] Figure 3 It is an exploded view of the utility model.

[0019] Figure 4 This is a cross-sectional view of the fan of the present utility model.

[0020] Figure 5 This is a cross-sectional view of the protective shell of the utility model Figure 1 .

[0021] Figure 6 This is a cross-sectional view of the protective shell of the utility model Figure 2 .

[0022] Figure 7 It is a schematic diagram of the protection mechanism of the utility model.

[0023] Description of reference numerals:

[0024] 1. Protective shell, 101. Mounting slot, 102. Air inlet channel, 103. Limiting ring, 104. Connecting slot, 105. Limiting slot, 106. Slide rail slot, 107. Threaded slot, 108. Air outlet grille, 2. Protective mechanism, 201. Protective plate, 202. Limiting block, 203. Connecting rod, 204. Diverter block, 205. Fastening ring, 206. Connecting ring, 207. Dustproof frame, 208. Dustproof net, 3. Fan, 301. Shell, 302. Air outlet pipe, 303. Air inlet, 304. Support frame, 305. Motor, 306. Connecting shaft, 307. Fan blades. DETAILED DESCRIPTION

[0025] like Figure 1-7 As shown, a fan 3 with a safety protection device includes a fan 3, the fan 3 includes a shell 301, a motor 305 is provided on one side of the shell 301, a connecting shaft 306 is fixedly connected to the output end of the motor 305, an air inlet 303 is provided on the other side of the shell 301, the air inlet 303 is fixedly connected to a support frame 304, the connecting shaft 306 rotates through the shell 301 and is rotatably connected to the support frame 304, a fan blade 307 is fixedly connected to the connecting shaft 306, and also includes a protective shell 1 and a protective mechanism 2, the motor 305 is fixedly connected to the output end of the motor 305, and an air inlet 303 is provided on the other side of the shell 301. On the outside of the protective shell 1, the connecting shaft 306 rotates and passes through the protective shell 1. The protective shell 1 is provided with a mounting groove 101. The fan 3 is fixedly connected to the mounting groove 101. One side of the shell 301 is fixedly connected and connected with an air outlet pipe 302. One side of the protective shell 1 is provided with an air outlet grille 108. The air outlet pipe 302 is connected to the air outlet grille 108. An air intake channel 102 is provided in the protective shell 1. The air intake channel 102 is connected to the air inlet 303. The protective mechanism 2 is connected to the protective shell 1 for controlling the opening and closing of the air intake channel 102.

[0026] like Figure 5-7As shown, in order to adjust the sliding of the protective plate 201 and thus control the opening and closing of the air inlet passage 102 to prevent impurities from entering the fan 3 when the fan 3 is not in use, the protective mechanism 2 includes a protective plate 201, a connecting groove 104 is provided in the protective shell 1, and the connecting groove 104 is connected to one side of the air inlet passage 102, the protective plate 201 is slidably arranged in the connecting groove 104, the protective plate 201 covers the air inlet passage 102, a connecting rod 203 is fixedly connected to one side of the protective plate 201, a slide rail groove 106 is provided on one side of the connecting groove 104, the slide rail groove 106 runs through one side of the protective shell 1, the connecting rod 203 is slidably arranged in the slide rail groove 106, and the connecting rod 2 A shift block 204 is fixedly connected to the end of 03, and threaded grooves 107 are provided at both ends of the slide rail groove 106. A fastening ring 205 is rotatably provided on the connecting rod 203, and a connecting ring 206 is fixedly connected to one side of the fastening ring 205. The connecting ring 206 is threadedly connected and adapted to the threaded groove 107. The connection between the connecting ring 206 and the threaded rings at both ends of the slide rail groove 106 is used to fix the protective plate 201 when the air intake channel 102 is closed and opened. A limiting block 202 is fixedly connected to the other side of the protective plate 201, and a limiting groove 105 is provided on the other side of the connecting groove 104. The limiting block 202 is slidably adapted in the limiting groove 105, thereby improving the sliding stability of the protective plate 201.

[0027] like Figure 3 As shown, in order to filter and remove impurities from the gas entering the fan 3 when the fan 3 is running, the protective mechanism 2 also includes a dustproof frame 207, and the dustproof frame 207 is threadedly connected to the air inlet channel 102. A dustproof net 208 is fixedly connected to the dustproof frame 207, and a limiting ring 103 is fixedly connected to the air inlet channel 102, and the dustproof frame 207 abuts against the limiting ring 103.

[0028] When the utility model is in use, when the fan 3 is running, the connecting rod 203 is located at the right end of the slide rail groove 106, and the fastening ring 205 on the connecting rod 203 is rotated to make the connecting ring 206 threadedly connected to the thread groove 107 at the right end of the slide rail groove 106, so as to fix the protective plate 201, so that the air inlet channel 102 is opened, and then the fan 3 can be operated by exhausting air through the air inlet channel 102. When air enters from the air inlet channel 102, it is filtered and impurities are removed through the dustproof net 208 on the dustproof frame 207. After long-term use, the dustproof frame 207 can be disassembled to clean the dustproof net 208, and the fan 3 is not in operation. When operating, the connecting ring 206 is rotated to be pulled out of the threaded groove 107 at the right end of the slide groove 106, and the connecting rod 203 is pushed to slide in the slide groove 106 to the left end of the slide groove 106 through the shift block 204, thereby driving the protective plate 201 to slide and close the air inlet channel 102. At the same time, the limit block 202 slides in the limit groove 105 to improve the sliding stability of the protective plate 201. The fastening ring 205 is rotated to drive the connecting ring 206 to be threadedly connected to the threaded groove 107 at the left end of the slide groove 106, thereby fixing the connecting rod 203, and then fixing the protective plate 201, so that the air inlet channel 102 remains closed.

[0029] In summary: In the embodiment of the utility model, by adjusting the protective plate 201 in the protective mechanism 2, the opening and closing of the air intake channel 102 can be controlled, and then the air intake channel 102 can be closed when the fan 3 is not running, effectively preventing debris from entering the fan 3 through the air intake channel 102, and through the dustproof net 208 in the detachable dustproof frame 207, the inhaled air can be filtered when the fan 3 is running, thereby preventing dust from entering when the fan 3 is running, and at the same time, it is convenient to disassemble and clean the dustproof frame 207.

[0030] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A fan with a safety protection device, comprising a fan, the fan comprising a housing, a motor is provided on one side of the housing, a connecting shaft is fixedly connected to the output end of the motor, an air inlet is provided on the other side of the housing, a support frame is fixedly connected to the air inlet, the connecting shaft rotates through the housing and is rotatably connected to the support frame, a fan blade is fixedly connected to the connecting shaft, and the fan blade is characterized in that: It also includes a protective shell and a protective mechanism, the motor is fixedly connected to the outside of the protective shell, the connecting shaft rotates and passes through the protective shell, the protective shell is provided with a mounting slot, the fan is fixedly connected to the mounting slot, one side of the shell is fixedly connected to and connected with an air outlet pipe, one side of the protective shell is provided with an air outlet grille, the air outlet pipe is connected to the air outlet grille, an air inlet channel is provided in the protective shell, the air inlet channel is connected to the air inlet, the protective mechanism is connected to the protective shell for controlling the opening and closing of the air inlet channel, the protective mechanism includes a protective plate, a connecting slot is provided in the protective shell, the connecting slot is connected to one side of the air inlet channel, the protective plate is slidably arranged in the connecting slot, the protective plate covers the air inlet channel, the protective mechanism also includes a dustproof frame, the dustproof frame is threadedly connected to the air inlet channel, and a dustproof net is fixedly connected to the dustproof frame.

2. A fan with a safety protection device according to claim 1, characterized in that: A connecting rod is fixedly connected to one side of the protective plate, a slide rail groove is provided on one side of the connecting groove, the slide rail groove passes through one side of the protective shell, the connecting rod is slidably arranged in the slide rail groove, and a shift block is fixedly connected to the end of the connecting rod.

3. A fan with a safety protection device according to claim 2, characterized in that: Thread grooves are arranged at both ends of the slide rail groove, a fastening ring is rotatably arranged on the connecting rod, a connecting ring is fixedly connected to one side of the fastening ring, and the connecting ring is threadedly connected and adapted to the thread groove.

4. The fan with a safety protection device according to claim 3, characterized in that: The other side of the protective plate is fixedly connected to a limiting block, and the other side of the connecting groove is provided with a limiting groove, and the limiting block is slidably adapted in the limiting groove.

5. The fan with a safety protection device according to claim 4, characterized in that: A limiting ring is fixedly connected in the air intake passage, and the dustproof frame abuts against the limiting ring.

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