Smoke exhaust fan with protective cover

Abstract

The utility model discloses a kind of smoke exhaust fan with protective cover, including transverse placement machine body, the upper end of the machine body and the left edge close place is equipped with vertical recess, the inner side wall of the recess is slidably inserted with semicircular connection plate, the upper end of the connection plate and the center position close fixed connection has n-shaped handle, the lower end of the connection plate is equipped with arc slot, the inner top of the arc slot is fixedly connected with support ring, the support ring is fixedly embedded with protective net, the lower end of the support ring is slidably extended into machine body, the lower end of the connection plate is fixedly connected with two connecting blocks, two The connecting block is located at the two sides of support ring, the inner bottom of the recess is equipped with the connecting groove corresponding with connecting block, the lower end of the connecting block is slidably extended into connecting groove. The utility model is designed with connecting plate and pull ring, creates pull-out type protective net, plays safety protection while, saves a lot of manpower and time for maintenance overhaul, improves efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and in particular to a smoke exhaust fan with a protective cover. Background Technology

[0002] A smoke exhaust fan is a device used to remove smoke and harmful gases from buildings in emergencies such as fires, providing a clear air environment for evacuation and fire rescue. It is typically cylindrical, a shape that facilitates smooth airflow, reduces resistance, and improves smoke extraction efficiency. Its outer casing is generally made of metal to ensure structural strength and high-temperature resistance. Internally, it contains components such as an impeller and motor; the motor drives the impeller to rotate, thus achieving the smoke extraction function.

[0003] Currently, to enhance the safety of the impeller inside exhaust fans, protective mesh covers are usually installed at their air inlets. However, these protective mesh covers are often fixed with multiple bolts, which causes great inconvenience for disassembly and assembly during subsequent maintenance and repair. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to provide a smoke exhaust fan with a protective cover.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A smoke exhaust fan with a protective cover includes a horizontally placed body. A vertically oriented groove is provided at the upper end of the body near its left edge. A semi-circular connecting plate is slidably inserted into the inner wall of the groove. An n-shaped handle is fixedly connected to the upper end of the connecting plate near its center. An arc-shaped groove is provided at the lower end of the connecting plate. A support ring is fixedly connected to the top inner part of the arc-shaped groove, and a protective mesh is fixedly embedded within the support ring. The lower end of the support ring slides into the body of the fan. Two connecting blocks are fixedly connected to the lower end of the connecting plate, located on opposite sides of the support ring. A connecting groove corresponding to the connecting blocks is provided at the bottom inner part of the groove. The lower end of each connecting block slides into the connecting groove. A slot is provided on the outer wall of each connecting block. A locking block is slidably inserted into the inner wall of the slot. A corresponding slot is provided on the inner wall of the connecting groove. One end of the locking block passes through the slot and extends slidably into the slot. A horizontally arranged guide rod is slidably inserted into the other end of the locking block. The end of the guide rod away from the locking block is fixedly connected to the inner wall of the slot. A pull rope is fixedly connected to the end of the locking block away from the slot. A wire ring is fixedly connected to the inner wall of the slot on the side away from the slot. A storage slot is provided at the upper end of the connecting plate. The storage slot is located directly below the handle. A pull ring is provided between the storage slot and the handle. A hollow groove communicating with the storage slot is provided at the inner top of the slot. The end of the pull rope away from the locking block slides through the hollow groove and the storage slot in sequence and is fixedly connected to the lower end of the pull ring.

[0007] Preferably, a fixing cylinder is fixedly sleeved at one end of the pull rope facing the locking block, and one end of the fixing cylinder is fixedly connected to the outer wall of the locking block.

[0008] Preferably, a second rubber pad and a rubber ring are fixedly connected to the inner sidewall and the inner bottom of the slot, respectively.

[0009] Preferably, a first rubber pad is fixedly connected to the lower side wall of the support ring.

[0010] Preferably, a third rubber pad is fixedly connected to the inner sidewall of the slot.

[0011] Preferably, the pull cord is made of nylon.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, the connecting plate, the support ring and the protective net work together to build a safety protective cover at the air inlet of the machine body, effectively blocking the intrusion of debris and preventing damage to the impeller. At the same time, the use of the first rubber pad, the second rubber pad and the rubber ring significantly improves the sealing between the connecting plate and the support ring and the machine body, preventing debris from entering the machine body through gaps.

[0014] 2. This utility model is equipped with a locking block, a locking groove, a guide rod, a spring, a pull rope, a wire ring, a pull ring, and a handle. With this ingenious combination, users can conveniently and quickly insert and remove the protective net, achieving easy disassembly and assembly, and greatly improving the convenience of maintenance and repair work.

[0015] 3. This utility model adopts a connecting plate and pull ring design to create a plug-in protective net, which not only provides safety protection, but also saves a lot of manpower and time for maintenance and repair, and improves efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a smoke exhaust fan with a protective cover proposed in this utility model;

[0017] Figure 2 This is a side sectional view of a smoke exhaust fan with a protective cover proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the structure at point A of a smoke exhaust fan with a protective cover proposed in this utility model.

[0019] In the diagram: 1-body, 2-support ring, 3-first rubber pad, 4-protective net, 5-connecting block, 6-pull rope, 7-connecting plate, 8-handle, 9-pull ring, 10-wire ring, 11-guide rod, 12-spring, 13-clamping block, 14-rubber ring, 15-second rubber pad. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-3 A smoke exhaust fan with a protective cover includes a horizontally placed body 1. The left end of the body 1 is an air inlet. The upper end of the body 1 and near the left edge are provided with a vertically arranged groove. The inner side wall and the inner bottom of the groove are respectively fixedly connected with a second rubber pad 15 and a rubber ring 14 to improve the sealing between the connecting plate 7 and the groove. A semi-circular connecting plate 7 is slidably inserted into the inner side wall of the groove to support the support ring 2. An n-shaped handle 8 is fixedly connected to the upper end of the connecting plate 7 and near the center position to facilitate the user to lift the connecting plate 7. The lower end of the connecting plate 7 is provided with an arc-shaped groove. The inner top of the arc-shaped groove is fixedly connected with the support ring 2 to support the protective net 4. The protective net 4 is fixedly embedded in the support ring 2 to prevent debris from entering the body 1. The lower end of the support ring 2 slides into the body 1. A first rubber pad 3 is fixedly connected to the lower side wall of the support ring 2 to improve the sealing between the support ring 2 and the body 1.

[0022] In this embodiment, two connecting blocks 5 are fixedly connected to the lower end of the connecting plate 7 to support the connecting plate 7. The two connecting blocks 5 are located on both sides of the support ring 2. The bottom of the groove is provided with a connecting groove corresponding to the connecting block 5. The lower end of the connecting block 5 slides into the connecting groove. A slot is provided on the outer side wall of the connecting block 5. A locking block 13 is slidably inserted on the inner side wall of the slot to lock the position of the connecting block 5 in cooperation with the locking groove. A locking groove corresponding to the locking block 13 is provided on the inner side wall of the connecting groove. One end of the locking block 13 passes through the slot and slides into the locking groove. A third rubber pad is fixedly connected on the inner side wall of the locking groove to prevent wear between the locking block 13 and the locking groove.

[0023] In this embodiment, a horizontally arranged guide rod 11 is slidably inserted into the other end of the locking block 13 to guide the movement of the locking block 13. The end of the guide rod 11 away from the locking block 13 is fixedly connected to the inner wall of the slot. A pull rope 6 is fixedly connected to the end of the locking block 13 away from the slot to drive the locking block 13 to move. A wire ring 10 is fixedly connected to the inner wall of the slot away from the slot to guide the movement of the pull rope 6. A storage slot is provided at the upper end of the connecting plate 7, and the storage slot is located at the handle 8. Below, a pull ring 9 is provided between the storage slot and the handle 8 to drive the pull rope 6 to move. The inner top of the slot is provided with a hollow groove that communicates with the storage slot. The end of the pull rope 6 away from the locking block 13 slides through the hollow groove and the storage slot in sequence and is fixedly connected to the lower end of the pull ring 9. A fixing sleeve is fixedly sleeved on the end of the pull rope 6 facing the locking block 13 to improve the firmness between the pull rope 6 and the locking block 13. One end of the fixing sleeve is fixedly connected to the outer wall of the locking block 13. The pull rope 6 is made of nylon material to extend its service life.

[0024] In this embodiment, the protective net 4 first prevents debris from being sucked into the machine body 1, thereby preventing damage to the impeller inside the machine body 1. During maintenance and repair, hold the handle 8 and pull the pull ring 9 with your fingers. The pull ring 9 drives the pull rope 6 to move, and the pull rope 6 drives the locking block 13 to move out of the slot. At this time, lift the handle 8 upward to raise the connecting plate 7, and the connecting plate 7 can drive the support ring 2 and the protective net 4 to be removed from the machine body 1. After maintenance and repair, insert the connecting plate 7 and the support ring 2 back into their original positions. At this time, release the pull ring 9, and the elasticity of the spring 12 pushes the locking block 13 to move back to the slot, thereby locking the position of the connecting block 5 and preventing the connecting plate 7 and the support ring 2 from loosening.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A smoke exhaust fan with a protective cover, comprising a horizontally placed body (1), characterized in that: The upper end of the body (1) and near the left edge is provided with a vertically arranged groove. A semi-circular connecting plate (7) is slidably inserted into the inner wall of the groove. An n-shaped handle (8) is fixedly connected to the upper end of the connecting plate (7) and near the center. The lower end of the connecting plate (7) is provided with an arc-shaped groove. A support ring (2) is fixedly connected to the top of the arc-shaped groove. A protective net (4) is fixedly embedded in the support ring (2). The lower end of the support ring (2) slides into the body (1). The lower end of the connecting plate (7) is fixedly connected with two connecting blocks (5). The two connecting blocks (5) are located on both sides of the support ring (2). The bottom of the groove is provided with a connecting groove corresponding to the connecting block (5). The lower end of the connecting block (5) slides into the connecting groove. A slot is provided on the outer wall of the connecting block (5). A card is slidably inserted into the inner wall of the slot. Block (13), the inner wall of the connecting groove is provided with a slot corresponding to the block (13), one end of the block (13) passes through the slot and slides into the slot, the other end of the block (13) is slidably inserted with a horizontally arranged guide rod (11), the end of the guide rod (11) away from the block (13) is fixedly connected to the inner wall of the slot, the end of the block (13) away from the slot is fixedly connected with a pull rope (6), the inner wall of the slot and the side away from the slot is fixedly connected with a wire ring (10), the upper end of the connecting plate (7) is provided with a storage slot, the storage slot is located directly below the handle (8), the storage slot and the handle (8) are provided with a pull ring (9), the inner top of the slot is provided with a hollow slot communicating with the storage slot, the end of the pull rope (6) away from the block (13) slides through the hollow slot and the storage slot in sequence and is fixedly connected to the lower end of the pull ring (9).

2. The smoke exhaust fan with a protective cover according to claim 1, characterized in that: The end of the pull rope (6) facing the locking block (13) is fixedly sleeved with a fixing cylinder, and one end of the fixing cylinder is fixedly connected to the outer wall of the locking block (13).

3. The smoke exhaust fan with a protective cover according to claim 1, characterized in that: The inner wall and the bottom of the slot are respectively fixedly connected to a second rubber pad (15) and a rubber ring (14).

4. A smoke exhaust fan with a protective cover according to claim 1, characterized in that: The lower side wall of the support ring (2) is fixedly connected to the first rubber pad (3).

5. A smoke exhaust fan with a protective cover according to claim 1, characterized in that: A third rubber pad is fixedly connected to the inner wall of the slot.

6. A smoke exhaust fan with a protective cover according to claim 1, characterized in that: The pull rope (6) is made of nylon.

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