Air supply structure for food plant purification
By introducing a limiting mechanism into the air purification equipment in the food workshop, the problem of inconvenient replacement of high-positioned filters has been solved, enabling quick disassembly and installation of filters and improving replacement efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JI NAN TIANFANG CLEAN ROOM ENG CO LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-06-26
AI Technical Summary
In existing technologies, the filters of air purification equipment in food processing workshops need to be replaced regularly. However, since the air outlets are installed at high locations, maintenance personnel need to climb up to replace them, which makes the replacement inconvenient.
A limiting mechanism was designed, including a limiting unit and a reset unit. Through the cooperation of a rotating wheel, a rotating rod, a limiting block and a spring, the filter frame can be quickly installed and disassembled, which facilitates the replacement of filters at high locations.
It enables efficient and convenient replacement of filters in air purification equipment in food processing workshops, improving work efficiency and reducing maintenance difficulty.
Smart Images

Figure CN224415307U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air purification, specifically an air supply structure for purification in a food processing workshop. Background Technology
[0002] The workshop routinely uses air purification equipment to filter and purify the air, and then discharges the purified air into the workshop through the air outlet, which has the effect of purifying and improving the air in the workshop.
[0003] In the prior art, when filtering air in a workshop, impurities in the air are filtered and blocked by the filter screen of the air outlet. In order to ensure filtration efficiency and avoid filter screen blockage, the filter screen needs to be replaced regularly. However, the air outlet is usually installed at a high place, and maintenance personnel need to climb to a certain height to replace and maintain it. Based on this, in order to facilitate the disassembly and replacement of the filter screen, this utility model proposes an air supply structure for purification in a food workshop. Utility Model Content
[0004] The purpose of this utility model is to provide an air supply structure for purification in food processing workshops in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an air supply structure for purification in a food workshop, including a pipe, a fan installed inside the pipe for supplying air, a filter frame for filtering the exhaust air installed at the end of the pipe, and a limiting mechanism for quick installation and disassembly of the filter frame provided on the pipe and the filter frame.
[0006] The limiting mechanism includes a limiting unit and a reset unit;
[0007] The limiting unit is used to provide limiting for the installation of pipes and fans;
[0008] The reset unit is used to provide reset power for the limit unit after rotation.
[0009] As a further embodiment of this utility model: the limiting unit includes a rotating wheel, a rotating rod, a transmission rod, a limiting block, a fixing block, and a docking block;
[0010] The rotating wheel is rotatably mounted on the outer wall of the pipe, and a rotating rod is fixed inside the pipe. The transmission rod is rotatably connected to the eccentric position of the two rotating wheels, and the transmission rod is used to drive the other rotating wheel to rotate synchronously.
[0011] The limiting block is fixed to the outer wall of the rotating rod. The limiting block matches the inner cavity of the docking block fixed to one side of the fixing block. The fixing block is fixed to the outer wall of the filter frame and is close to the air outlet of the pipe.
[0012] As a further improvement of this utility model: the reset unit includes a positioning rod and a spring;
[0013] The positioning rod is fixed to the inner wall of the pipe and passes through the protruding part of the outer wall of the rotating rod. The spring is wrapped around the outer wall of the positioning rod and its two ends are respectively engaged with the inner wall of the pipe and the protruding part of the outer wall of the rotating rod. The spring is used to provide a reset thrust for the rotating rod after rotation.
[0014] As a further embodiment of this utility model: the inner wall of the pipe is formed with a rotating groove for the outer wall protrusion of the rotating rod to rotate, and the rotating groove is distributed at ninety degrees.
[0015] As a further improvement of this utility model: the limiting block has an overall "L" shaped structure, the end of the limiting block is arc-shaped, and the axis of the arc-shaped groove in the inner cavity of the docking block is the same as the rotation axis of the limiting block.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] By setting a limiting mechanism, when it is necessary to clean the filter screen and activated carbon plate of the air outlet of the high-level duct, after the personnel climb to a certain height by climbing the ladder, they can rotate the wheel clockwise, thereby driving the four limiting blocks to rotate simultaneously, so that the limiting blocks disengage from the groove of the docking slot. This achieves the purpose of quickly disassembling the filter screen frame, making it convenient to replace and clean the filter screen and activated carbon plate inside the filter screen frame. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the limiting mechanism of this utility model;
[0020] Figure 3 This is a schematic diagram of the installation structure of the transmission rod of this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the docking block of this utility model.
[0022] In the diagram: 1. Pipe; 2. Fan; 3. Filter frame; 4. Limiting mechanism; 401. Rotating wheel; 402. Rotating rod; 403. Transmission rod; 404. Limiting block; 405. Fixing block; 406. Connecting block; 407. Positioning rod; 408. Spring. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1-4 In this embodiment of the present invention, a ventilation structure for purification in a food workshop includes a pipe 1, a fan 2 installed in the inner cavity of the pipe 1 for supplying air, a filter frame 3 for filtering the exhaust air installed at the end of the pipe 1, and a limiting mechanism 4 provided on the pipe 1 and the filter frame 3 for quick installation and disassembly of the filter frame 3.
[0025] The limiting mechanism 4 includes a limiting unit and a reset unit;
[0026] The limiting unit is used to provide limits for the installation of pipe 1 and fan 2;
[0027] The reset unit is used to provide reset power for the limit unit after rotation;
[0028] The limiting unit includes a rotating wheel 401, a rotating rod 402, a transmission rod 403, a limiting block 404, a fixing block 405, and a docking block 406;
[0029] The rotating wheel 401 is rotatably mounted on the outer wall of the pipe 1, and a rotating rod 402 is fixed inside the pipe 1. The transmission rod 403 is rotatably connected to the eccentric position of the two rotating wheels 401. The transmission rod 403 is used to drive the other rotating wheel 401 to rotate synchronously.
[0030] The limiting block 404 is fixed on the outer wall of the rotating rod 402. The limiting block 404 matches the inner cavity of the docking block 406 fixed on one side of the fixing block 405. The fixing block 405 is fixed on the outer wall of the filter frame 3 and is close to the air outlet of the pipe 1.
[0031] The reset unit includes a positioning rod 407 and a spring 408;
[0032] The positioning rod 407 is fixed to the inner wall of the pipe 1 and passes through the protrusion of the outer wall of the rotating rod 402. The spring 408 is wrapped around the outer wall of the positioning rod 407 and its two ends are respectively engaged with the inner wall of the pipe 1 and the protrusion of the outer wall of the rotating rod 402. The spring 408 is used to provide a reset thrust for the rotating rod 402 after rotation.
[0033] In this embodiment: when the filter frame 3 needs to be replaced, a person climbs a ladder to the port of pipe 1 and uses their hands to apply rotational power to the rotating wheel 401. The rotating wheel 401 synchronously drives the rotating rod 402 fixed at one end to rotate, and the end of the transmission rod 403, which is eccentrically connected to the other end of the rotating wheel 401, will also rotate circumferentially in sync. This drives the rotating wheel 401, which is eccentrically connected to the other end of the transmission rod 403, to rotate, so that the two rotating wheels 401 and the rotating rod 402 rotate in the same direction. The rotating rod 402 synchronously drives the limiting block 404 fixed to the outer wall to rotate, so that the arc-shaped end of the limiting block 404 moves out of the arc-shaped inner cavity of the docking block 406, thereby quickly releasing the connection and limiting of the limiting block 404 and the docking block 406, thereby disconnecting the pipe 1 and the filter frame 3. This facilitates the quick replacement of the filter and activated carbon plate set in the inner cavity of the filter frame 3, further improving work efficiency.
[0034] Please refer to this carefully. Figures 1-4 The inner wall of pipe 1 is formed with a rotating groove for the outer wall protrusion of rotating rod 402 to rotate. The rotating groove is distributed at ninety degrees. The limit block 404 has an overall "L" shaped structure. The end of the limit block 404 is arc-shaped. The axis of the arc-shaped groove in the inner cavity of the connecting block 406 is the same as the axis of rotation of the limit block 404.
[0035] In this embodiment: With this structure, when the rotating rod 402 rotates, the protrusion fixed on the outer wall of the rotating rod 402 will also rotate circumferentially around the axis of the rotating rod 402, so that the protrusion of the rotating rod 402 moves along the outer wall of the positioning rod 407. The moving protrusion will apply a squeezing force to the spring 408. When the pipe 1 and the filter frame 3 are separated, the rotating wheel 401 will no longer be given rotational force, so that the rotating wheel 401 and the rotating rod 402 will be reset under the elastic thrust of the spring 408.
[0036] 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 ventilation structure for purification in a food processing workshop, comprising a duct (1), characterized in that, It also includes a fan (2) for supplying air installed in the inner cavity of the pipe (1), and a filter frame (3) for filtering the exhaust air is installed at the end of the pipe (1). It also includes a limiting mechanism (4) for quick installation and disassembly of the filter frame (3) on the pipe (1) and the filter frame (3). The limiting mechanism (4) includes a limiting unit and a reset unit; The limiting unit is used to provide a limit for the installation of the pipe (1) and the fan (2); The reset unit is used to provide reset power for the limit unit after rotation.
2. The air supply structure for purification in a food processing workshop according to claim 1, characterized in that, The limiting unit includes a rotating wheel (401), a rotating rod (402), a transmission rod (403), a limiting block (404), a fixing block (405), and a docking block (406). The rotating wheel (401) is rotatably mounted on the outer wall of the pipe (1), and a rotating rod (402) is fixed inside the pipe (1). The transmission rod (403) is rotatably connected to the eccentric position of the two rotating wheels (401). The transmission rod (403) is used to drive the other rotating wheel (401) to rotate synchronously. The limiting block (404) is fixed on the outer wall of the rotating rod (402). The limiting block (404) matches the inner cavity of the docking block (406) fixed on one side of the fixing block (405). The fixing block (405) is fixed on the outer wall of the filter frame (3) and close to the air outlet of the pipe (1).
3. The air supply structure for purification in a food processing workshop according to claim 1, characterized in that, The reset unit includes a positioning rod (407) and a spring (408). The positioning rod (407) is fixed to the inner wall of the pipe (1) and passes through the protrusion of the outer wall of the rotating rod (402). The spring (408) is wrapped around the outer wall of the positioning rod (407) and its two ends are respectively engaged with the inner wall of the pipe (1) and the protrusion of the outer wall of the rotating rod (402). The spring (408) is used to provide a reset thrust for the rotating rod (402) after rotation.
4. The air supply structure for purification in a food processing workshop according to claim 2, characterized in that, The inner wall of the pipe (1) is formed with a rotating groove for the outer wall protrusion of the rotating rod (402) to rotate, and the rotating groove is distributed at ninety degrees.
5. The air supply structure for purification in a food processing workshop according to claim 2, characterized in that, The limiting block (404) has an overall "L" shaped structure, and the end of the limiting block (404) is arc-shaped. The axis of the arc-shaped groove in the inner cavity of the docking block (406) is the same as the rotation axis of the limiting block (404).