Laboratory ventilation system

Abstract

The utility model discloses a laboratory ventilation system, which relates to the technical field of ventilation systems and comprises a communicating pipe and an exhaust port, an air suction port is arranged at one end of the communicating pipe, a telescopic hose is arranged at one end of the exhaust port, and an exhaust structure is arranged between the communicating pipe and the telescopic hose. Connecting structures are arranged at the ends, close to the exhaust structure, of the communicating pipe and the telescopic hose; by arranging an exhaust structure and a connecting structure, after a communicating pipe is preliminarily positioned, adsorption magnets on the surfaces of the communicating pipe, a telescopic hose and an exhaust channel can be adsorbed and fixed, so that internal communication is achieved; through double positioning and fixing, air leakage caused by a gap generated by separation of a joint due to shaking of the exhaust fan in the working process is prevented; the first positioning magnet and the first adsorption magnet at the end, close to the telescopic hose, of the connecting structure have larger magnetic force, one end of the connecting structure is connected with the telescopic hose and is separated from the communicating pipe, and the exhaust structure is prevented from falling off from a high place while a worker overhauls the exhaust structure conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation systems, in particular to a laboratory ventilation system. Background Art

[0002] A laboratory is a place where experiments are conducted. Laboratories are the cradle of science, the base of scientific research, and the source of technological development, playing a vital role in its development. Laboratories can be divided into three categories based on their ownership: the first category is affiliated with or managed by universities; the second category belongs to national institutions, some of which are even international; and the third category is directly under the jurisdiction of industrial enterprises, serving the development and research of industrial technologies. Laboratory categories are also differentiated by research discipline, and ventilation systems are a crucial component of each laboratory, in addition to laboratory equipment.

[0003] Current laboratory ventilation systems typically feature fixed fan assemblies, making disassembly and maintenance cumbersome in the event of a malfunction. One prior art ventilation system, such as one with publication number CN213001727U, offers ease of maintenance. This system includes a ventilation duct with a universal duct at one end, a suction hood fixedly mounted at the other end, a fan assembly at the other end, and an exhaust hood connected to the other end of the duct via a telescopic tube mechanism.

[0004] When this type of ventilation system is fixed, it is impossible to ensure that the inner cavity of the fan body is sealed and connected with the inner cavity of the ventilation duct expansion duct. At the same time, when the expansion duct is moved, the fan body at a high position, due to lack of fixation, can fall directly from the height, requiring personnel to assist in removing the fan from below. This brings trouble to the fan maintenance process. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems of the above-mentioned background technology and to provide a laboratory ventilation system.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A laboratory ventilation system includes a connecting pipe and an exhaust port, wherein one end of the connecting pipe is provided with an air intake port, one end of the exhaust port is provided with a telescopic hose, and an exhaust structure is provided between the connecting pipe and the telescopic hose, wherein the exhaust structure includes:

[0008] The exhaust channel is provided with an exhaust fan inside, and first adsorption magnets are provided at both ends of the exhaust channel:

[0009] A fixing frame is arranged outside the exhaust channel, and positioning grooves are provided at both ends of the exhaust channel, and first positioning magnets are provided in the positioning grooves;

[0010] A connecting structure is provided at one end of the connecting pipe and the telescopic hose close to the exhaust structure. The connecting disk of the connecting structure is sleeved on the surface of the connecting pipe and the telescopic hose. Positioning blocks are provided on the opposite sides of the connecting disks. A second positioning magnet is provided at one end of the positioning block; a second adsorption magnet is provided on the surface of the connecting pipe and the telescopic hose.

[0011] As a further solution of the present invention: the positioning block is in an arc shape, and the positioning groove has the same shape as the positioning block.

[0012] As a further solution of the utility model: the exhaust port is arranged in the laboratory wall, and a cylinder is fixedly arranged on the surface of the exhaust port; a connecting ring is provided at one end of the connecting hose, and the output end of the cylinder is connected to the connecting ring.

[0013] As a further solution of the present invention: a connecting hose is provided between the connecting pipe and the exhaust port.

[0014] As a further solution of the present invention: two positioning blocks on a connecting disk are symmetrically arranged with respect to the center plane.

[0015] As a further solution of the present invention, the magnetic force of the second positioning magnet and the second adsorption magnet of the connecting structure close to one end of the telescopic hose is greater than that of the other end.

[0016] Beneficial effects of the utility model:

[0017] (1) The utility model provides a laboratory ventilation system, which is provided with an exhaust structure and a connecting structure. The positioning block of the connecting structure can be extended into the positioning groove of the fixing ring, and then initially fixed by adsorption by the positioning magnet. At this time, after the connecting pipe is initially positioned, the adsorption magnets on the surface of the connecting pipe, the telescopic hose and the exhaust channel can be adsorbed and fixed, thereby guiding the connecting pipe, the telescopic hose and the exhaust channel to communicate with each other. The dual positioning and fixing by the adsorption magnet and the fixing magnet can prevent the exhaust fan from shaking during operation, causing the connection to be detached and a gap to form, resulting in air leakage.

[0018] (2) The utility model provides a laboratory ventilation system, which is provided with a first positioning magnet and a first adsorption magnet. The first positioning magnet and the first adsorption magnet of the connecting structure near one end of the telescopic hose have a greater magnetic force, so that when the cylinder drives the telescopic hose to move, one end of the connecting structure is connected to the telescopic hose and is separated from the connecting pipe, which is convenient for staff to inspect and repair it while preventing the exhaust structure from falling from a height. Subsequently, the cylinder drives the exhaust structure to move and quickly position and install it between the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a structural diagram of a laboratory ventilation system of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the exhaust structure and the connection structure of the utility model;

[0022] Figure 3 It is a cross-sectional schematic diagram of the exhaust structure of the utility model;

[0023] Figure 4 It is a cross-sectional schematic diagram of the connection structure of the utility model.

[0024] In the figure: 1. connecting pipe; 2. connecting hose; 3. air intake port; 4. exhaust structure; 41. exhaust duct; 42. exhaust fan; 43. positioning groove; 44. first positioning magnet; 45. fixing bracket; 46. first adsorption magnet; 5. telescopic hose; 6. connecting structure; 61. connecting plate; 62. positioning block; 63. second positioning magnet; 64. second adsorption magnet; 7. mounting plate; 8. cylinder; 9. connecting ring; 10. exhaust port. DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-4As shown, the present invention is a laboratory ventilation system comprising a connecting pipe 1, with a connecting hose 2 disposed at one end. An air inlet 3 is disposed at the end of the connecting hose 2 remote from the connecting pipe 1. The air inlet 3 is fixed relative to the outside area, and the flexibility of the connecting hose 2 facilitates placement of the air inlet 3 in various locations. An exhaust port 10 is fixed relative to the outside area, located outside the laboratory, and fixed relative to the laboratory wall. An expandable hose 5 is disposed at the end of the exhaust port 10 facing the interior of the laboratory. A connecting ring 9 is mounted on the surface of the expandable hose 5. A mounting plate 7 is mounted on the surface of the exhaust port 10. Two cylinders 8 are fixedly mounted on the surface of the mounting plate 7. The output ends of the two cylinders 8 are fixedly connected to one side of the connecting ring 9. A connecting structure 6 is disposed between the expandable hose 5 and one end of the connecting pipe 1. A connecting plate 61 of the connecting structure 6 is mounted on the surfaces of the connecting pipe 1 and the expandable hose 5. Two arc-shaped positioning blocks 62 are disposed on the adjacent sides of the connecting plates 61. The two positioning blocks 62 on each connecting plate 61 are symmetrically arranged about the central axis of the connecting plate. A second positioning magnet 63 can be provided at one end of each positioning block 62 , and a second adsorption magnet 64 is provided on the opposite surface of the telescopic hose 5 of the communicating pipe 1 .

[0027] An exhaust structure 4 is provided between the telescopic hose 5 and the connecting pipe, and the exhaust structure 4 is fixedly connected to the connecting structure 6 on the surface. An exhaust fan is rotatably provided inside the exhaust channel of the exhaust structure 4, and first adsorption magnets 46 are provided on both sides of the exhaust channel. The position of the first adsorption magnet 46 is adapted to the position of the second adsorption magnets 64 on both sides, wherein the magnetic force of the first adsorption magnet 46 on one end of the exhaust channel close to the telescopic hose 5 is greater than that on the other side. A fixing frame 45 is provided on the outside of the exhaust channel, and positioning grooves 43 are provided on both sides of the fixing frame 45. The positioning grooves 43 are in the shape of a circular arc, and the shape of the positioning grooves 43 is the same as the cross-sectional shape of the positioning block 62. A first positioning magnet 44 is provided inside the positioning grooves 43 on both sides, wherein the magnetic force of the first positioning magnet 44 close to the telescopic hose 5 is greater than that on the other side.

[0028] When using this laboratory ventilation system, the air intake 3 is installed in a designated location. The inherent bending properties of the connecting hose 2 extend the installation range and applicable scenarios of the air intake 3. The exhaust port 10 is installed in the laboratory wall, with the output end of the exhaust port 10 facing outward. The output end of the cylinder 8 on the surface of the exhaust port 10 then drives one end of the telescopic hose 5 to extend and retract, exposing one end of the telescopic hose 5 and the connecting pipe 1. An exhaust structure 4 is placed within the system, with its mounting bracket 45 positioned and connected to the connecting plate 61. The positioning block 62 on the surface of the connecting plate 61 extends into the positioning groove 43 of the mounting bracket 45. The first positioning magnet 44 and the second positioning magnet 63 then perform a preliminary adsorption and fixation. Simultaneously, the internal exhaust duct contacts one end of the connecting pipe 1. The first adsorption magnet 46 on the surface of the exhaust duct attracts the second adsorption magnet 64 on the end of the connecting pipe 1, connecting them and thus connecting the connecting pipe 1 to the interior of the exhaust duct. The air cylinder 8 on the other side is then activated. The output end of the cylinder 8 drives the telescopic hose 5 to move, causing the connecting structure 6 on the end of the telescopic hose 5 to repeat the above connection method and connect with the exhaust structure 4. The exhaust passage is connected to the inner cavity of the connecting pipe 1 and the telescopic hose 5, and is doubly positioned and fixed by an adsorption magnet and a fixed magnet to prevent the exhaust fan 42 from shaking during operation, causing the connection to detach and a gap to form, resulting in air leakage. When the exhaust fan 42 needs to be cleaned regularly, the cylinder 8 is started, and the output end of the cylinder 8 drives the telescopic hose 5 to extend and retract. Since the magnetic force of the first cleaning magnet and the first adsorption magnet 46 near the telescopic hose 5 is greater than the magnetic force near one end of the connecting pipe 1, the exhaust structure 4 and the connecting pipe 1 are disconnected, while the exhaust structure 4 and one end of the telescopic hose 5 remain fixed. This prevents the exhaust fan at a high place from falling from a high place when it is uninstalled, and facilitates the staff to inspect and repair it. After the inspection is completed, the cylinder 8 drives the telescopic hose 5 to move, so that the exhaust structure 4 and one side of the connecting pipe 1 can be quickly positioned and installed.

[0029] Working principle of the present invention: A laboratory ventilation system of the present invention is provided with an exhaust structure 4 and a connecting structure 6. The positioning block 62 of the connecting structure 6 can be extended into the positioning groove 43 of the fixing ring, and then is initially adsorbed and fixed by the positioning magnet; at this time, after the connecting pipe 1 is initially positioned, the adsorption magnets on the surface of the connecting pipe 1, the telescopic hose 5 and the exhaust channel can be adsorbed and fixed, thereby guiding the connecting pipe 1, the telescopic hose 5 and the interior of the exhaust channel to be connected; double positioning and fixation are performed by the adsorption magnet and the fixed magnet to prevent the exhaust fan 42 from shaking during operation and causing the connection to be detached and gaps to form, resulting in air leakage; by providing a first positioning magnet 44 and a first adsorption magnet 46, the first positioning magnet 44 and the first adsorption magnet 46 of the connecting structure 6 near one end of the telescopic hose 5 have greater magnetic force, so that when the cylinder 8 drives the telescopic hose 5 to move, one end of the connecting structure 6 is connected to the telescopic hose 5 and detached from the connecting pipe 1, which is convenient for the staff to inspect and repair it while preventing the exhaust structure 4 from falling from a high place. Subsequently, the cylinder 8 drives the exhaust structure 4 to move and quickly position and install it between the connecting pipe 1.

[0030] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A laboratory ventilation system, characterized in that: The invention comprises a connecting pipe (1) and an exhaust port (10), wherein one end of the connecting pipe (1) is provided with an air inlet (3), one end of the exhaust port (10) is provided with a telescopic hose (5), and an exhaust structure (4) is provided between the connecting pipe (1) and the telescopic hose (5), wherein the exhaust structure (4) comprises: The exhaust channel (41) is provided with an exhaust fan (42) therein, and first adsorption magnets (46) are provided at both ends of the exhaust channel (41): A fixing frame (45) is arranged outside the exhaust channel (41), and positioning grooves (43) are provided at both ends of the exhaust channel (41), and a first positioning magnet (44) is provided in the positioning groove (43); A connecting structure (6) is provided at one end of the connecting pipe (1) and the telescopic hose (5) close to the exhaust structure (4); a connecting disk (61) of the connecting structure (6) is sleeved on the surface of the connecting pipe (1) and the telescopic hose (5); positioning blocks (62) are provided on opposite sides of the connecting disks (61); a second positioning magnet (63) is provided at one end of the positioning block (62); and a second adsorption magnet (64) is provided on the surface of the connecting pipe (1) and the telescopic hose (5).

2. A laboratory ventilation system according to claim 1, characterized in that: The positioning block (62) is in the shape of an arc, and the positioning groove (43) has the same shape as that of the positioning block (62).

3. A laboratory ventilation system according to claim 2, characterized in that: An exhaust port (10) is arranged in the laboratory wall, and a cylinder (8) is fixedly arranged on the surface of the exhaust port (10); a connecting ring (9) is arranged at one end of the connecting hose, and the output end of the cylinder (8) is connected to the connecting ring (9).

4. A laboratory ventilation system according to claim 1, characterized in that: A connecting hose is provided between the connecting pipe (1) and the exhaust port (10).

5. A laboratory ventilation system according to claim 1, characterized in that: Two positioning blocks (62) on a connecting disk (61) are symmetrically arranged with respect to a central plane.

6. A laboratory ventilation system according to claim 1, characterized in that: The magnetic force of the second positioning magnet (63) and the second adsorption magnet (64) at one end of the connecting structure (6) close to the telescopic hose (5) is greater than that at the other end.

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