Self-cleaning ventilation cabinet

Abstract

The utility model discloses a self-cleaning ventilation cabinet which comprises a ventilation cabinet body, a cabinet door is installed at the bottom of the ventilation cabinet body, and sockets are installed on the outer side of a cabinet frame of the ventilation cabinet body at equal intervals. The cleaning device further comprises a cleaning nozzle, the cleaning nozzle is fixedly installed on the inner side of the cabinet frame of the ventilation cabinet body, and the opening of the cleaning nozzle faces the glass protective door when the cleaning nozzle inclines by 45 degrees. According to the self-cleaning fume hood, when the fume hood body is closed, a handle is manually pulled, so that a glass protective door is driven to slide downwards along the inner side of an isolation plate, when the glass protective door slides downwards, an extrusion block at the bottom of the glass protective door can be inserted into the inner side of an extrusion groove in a penetrating mode, and the extrusion block continuously penetrates into the inner side of the extrusion groove; and the extrusion block extrudes the elastic air bag on the inner side of the extrusion groove, so that the elastic air bag is compressed, air on the inner side of the elastic air bag is conveyed to the inner side of the cleaning nozzle through the air guide pipe to be sprayed out, and dust on the outer surface of the glass protection door is cleaned through the air sprayed out of the cleaning nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, in particular to a self-cleaning fume hood. Background Art

[0002] Fume hoods, also known as cabinet exhaust hoods, are common equipment in laboratories, industrial production and some special working environments. Their main functions include controlling and regulating air circulation in these environments to avoid the accumulation of harmful gases or vapors, thereby reducing potential hazards to workers.

[0003] A self-cleaning fume hood with application number CN202021875276.1 comprises a fume hood body, a working room is provided on the front surface of the fume hood body, a sliding door is connected to the inner side of the working room through a slide groove, a glass plate is fixed on the inner side of the sliding door, an exhaust port is provided on the top of the fume hood body, a mounting seat is fixed on the front surface of the fume hood body, a connecting block is connected to the inner side of the mounting seat through a rotating rod, a tension spring is provided on one side surface of the connecting block, and the other end of the tension spring is fixed to the fume hood body; by providing a cleaning plate, a connecting block, a tension spring, a clamping plate, a clamping screw and a cleaning sponge, it is convenient to avoid inconvenience in cleaning the glass plate. When the surface of the glass plate is contaminated with dust or dirt, manual cleaning is required, and it is convenient to automatically clean the glass plate through a cleaning sponge; by providing a lifting ring, a fixing block and a rotating column, it is convenient to adjust the position of the lifting ring when the fume hood body is stored and placed.

[0004] The device wipes and cleans the glass plate with a sponge pad. Although this cleaning method can achieve the effect of automatic cleaning, the cleaning effect of the sponge pad will deteriorate after a long period of trial use and needs to be replaced. When replacing, not only the cost of use is increased, but also the replacement of the sponge pad is time-consuming and causes a waste of manpower.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original self-cleaning fume hood structure. Utility Model Content

[0006] The purpose of the utility model is to provide a self-cleaning fume hood to solve the problem that although the device mentioned in the above background technology can achieve the effect of automatic cleaning, the cleaning effect of the sponge pad will deteriorate after a long period of trial use and needs to be replaced, which not only increases the cost of use but also wastes time and manpower in replacing the sponge pad.

[0007] To achieve the above object, the utility model provides the following technical solutions: a self-cleaning fume hood, comprising a fume hood cabinet, a cabinet door is installed at the bottom of the fume hood cabinet, and sockets are installed at equal intervals on the outer side of the cabinet frame of the fume hood cabinet;

[0008] It also includes: a cleaning nozzle, which is fixedly installed on the inner side of the cabinet frame of the fume hood, and the cleaning nozzle is placed at an angle of 45° with the opening facing the glass protection door, and there are two groups of cleaning nozzles symmetrically arranged about the midpoint of the glass protection door; a limit block, the limit block has an arc-shaped structure when viewed from the front on its upper surface, and the limit block is arranged on the inner side of the through groove, and there are two groups of limit blocks symmetrically arranged about the midpoint of the glass protection door, and the limit block and the limit groove form a snap-fit ​​connection structure, and the limit groove is opened on both sides of the lower end of the extrusion block.

[0009] Preferably, the inner side of the fume hood cabinet is a hollow structure, and an isolation plate is fixedly installed on the inner side of the fume hood cabinet, and the inner side of the isolation plate is a hollow structure.

[0010] Preferably, a first telescopic spring is fixedly installed on the inner side of the isolation plate, and the tail end of the first telescopic spring is fixedly connected to a glass protection door, and the glass protection door is made of transparent glass, a handle is fixedly installed on the outer side of the glass protection door, and an extrusion block is fixedly installed on the bottom of the glass protection door; this structure can make the glass protection door reset itself through the elastic force of the first telescopic spring and slide upward along the inner side of the isolation plate.

[0011] Preferably, an extrusion groove is opened inside the fume hood cabinet, and an elastic airbag is fixedly installed inside the extrusion groove. The elastic airbag is connected to the cleaning nozzle through an air guide pipe, and the air guide pipe runs through the inside of the fume hood cabinet.

[0012] Preferably, the extrusion groove and the extrusion block are distributed in correspondence with each other up and down; in this structure, the extrusion groove and the extrusion block are distributed in correspondence with each other up and down, and the elastic airbag inside the extrusion groove can be squeezed by the downward movement of the extrusion block.

[0013] Preferably, a through groove is opened on the inside of the fume hood cabinet, and a sliding rod passes through the inside of the through groove, a fixing rod is fixedly installed on the tail end of the sliding rod, and a limiting block is fixedly installed on the head end of the sliding rod; this structure can adjust the position of the limiting block by sliding the sliding rod on the inside of the through groove.

[0014] Preferably, a second telescopic spring is connected between the through slot and the fixing rod; this structure can cause the limit block to reset itself through the elastic force of the second telescopic spring.

[0015] Compared with the prior art, the beneficial effect of the utility model is that the self-cleaning fume hood is provided with:

[0016] 1. Automatic cleaning structure. When closing the fume hood, the handle is manually pulled to drive the glass protection door to slide down along the inner side of the isolation plate. When the glass protection door slides down, the extrusion block at the bottom will be inserted into the inner side of the extrusion groove. As the extrusion block goes deeper, it will squeeze the elastic airbag inside the extrusion groove, so that the elastic airbag is compressed and the gas inside is transported to the inner side of the cleaning nozzle through the air duct and sprayed out. The dust on the outer surface of the glass protection door is cleaned by the gas sprayed from the cleaning nozzle, which improves the transparency of the glass protection door and facilitates the outside personnel to observe the situation inside the fume hood cabinet;

[0017] 2. Limiting structure. When the extrusion block slides downward along the inner side of the extrusion groove, the bottom of the extrusion block will contact the limiting block, and the limiting block with an arc-shaped upper surface will move outward through extrusion. When the limiting groove at the side end of the extrusion block is in a horizontal and flush state with the limiting block, the fixing rod is reset by the elastic force of the second telescopic spring, thereby pushing the sliding rod to slide along the inner side of the through groove, pushing the limiting block to the inner side of the limiting groove for engagement, and the extrusion block is fixed to the inner side of the through groove through the engagement of the limiting groove and the limiting block, so that the glass protection door is shielded on the outside of the fume hood cabinet for protection;

[0018] Furthermore, when the fume hood cabinet needs to be opened, the fixing rod can be manually pulled to enable the sliding rod to drive the limit block to slide outward along the inner side of the extrusion groove. After the limit block is separated from the limit groove, the extrusion block is in an active state. At this time, the glass protection door slides upward along the inner side of the isolation plate through the elastic force of the first telescopic spring, thereby causing the glass protection door to automatically rise, facilitating the use of the fume hood cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the utility model when viewed from above;

[0021] Figure 3 This is a schematic diagram of the top cross-sectional structure of the isolation plate of the utility model;

[0022] Figure 4 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 5 This is a schematic diagram of the connection structure between the elastic airbag and the cleaning nozzle of the utility model;

[0024] Figure 6 For this utility model Figure 2 The enlarged structural diagram at B in the middle;

[0025] Figure 7It is a schematic diagram of the three-dimensional structure of the sliding rod of the utility model.

[0026] In the figure: 1. Fume hood body; 2. Cabinet door; 3. Socket; 4. Isolation plate; 5. First telescopic spring; 6. Glass protection door; 7. Handle; 8. Extrusion block; 9. Extrusion groove; 10. Elastic airbag; 11. Air duct; 12. Cleaning nozzle; 13. Through groove; 14. Sliding rod; 15. Fixed rod; 16. Second telescopic spring; 17. Limit block; 18. Limit groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 7 The utility model provides a technical solution: a self-cleaning fume hood, comprising: Embodiment 1: Figure 1-Figure 5 The technical solution shown in the figure, the present invention provides a technical solution: a self-cleaning fume hood, which discloses: a fume hood cabinet 1, a cabinet door 2 is installed at the bottom of the fume hood cabinet 1, and sockets 3 are installed at equal distances on the outer side of the cabinet frame of the fume hood cabinet 1;

[0029] It also includes: a cleaning nozzle 12, which is fixedly mounted on the inner side of the cabinet frame of the fume hood cabinet body 1, and the cleaning nozzle 12 is placed at an angle of 45 degrees with the opening facing the glass protection door 6, and the cleaning nozzle 12 is symmetrically arranged in two groups about the midpoint of the glass protection door 6; a limit block 17, the limit block 17 has an arc-shaped structure when viewed from the front on its upper surface, and the limit block 17 is arranged on the inner side of the through groove 13, and the limit block 17 is symmetrically arranged in two groups about the midpoint of the glass protection door 6, and the limit block 17 and the limit groove 18 form a snap-fit ​​connection structure, and the limit groove 18 is opened at both sides of the lower end of the extrusion block 8;

[0030] The inner side of the fume hood cabinet body 1 is a hollow structure, and an isolation plate 4 is fixedly installed on the inner side of the fume hood cabinet body 1, and the inner side of the isolation plate 4 is a hollow structure; a first telescopic spring 5 is fixedly installed on the inner side of the isolation plate 4, and a glass protection door 6 is fixedly connected to the tail end of the first telescopic spring 5, and the glass protection door 6 is made of transparent glass, a handle 7 is fixedly installed on the outer side of the glass protection door 6, and an extrusion block 8 is fixedly installed on the bottom of the glass protection door 6; an extrusion groove 9 is opened on the inner side of the fume hood cabinet body 1, and an elastic airbag 10 is fixedly installed on the inner side of the extrusion groove 9, and the elastic airbag 10 is connected to the cleaning nozzle 12 through an air guide tube 11, and the air guide tube 11 runs through the inner side of the fume hood cabinet body 1; the extrusion groove 9 and the extrusion block 8 are distributed correspondingly up and down;

[0031] When the fume hood body 1 is closed, this structure manually pulls the handle 7 to drive the glass protection door 6 to slide downward along the inner side of the isolation plate 4. When the glass protection door 6 slides downward, the extrusion block 8 at the bottom thereof will be inserted into the inner side of the extrusion groove 9. As the extrusion block 8 goes deeper, the extrusion block 8 will squeeze the elastic air bag 10 inside the extrusion groove 9, so that the elastic air bag 10 is compressed and the gas inside is transported to the inner side of the cleaning nozzle 12 through the air duct 11 and ejected. Therefore, the dust on the outer surface of the glass protection door 6 is cleaned by the gas ejected from the cleaning nozzle 12, thereby improving the transparency of the glass protection door 6 and facilitating outside personnel to observe the situation inside the fume hood body 1.

[0032] Embodiment 2: Figure 1-Figure 2 , Figure 6-Figure 7 The technical solution shown in the figure, the present invention provides a technical solution: a self-cleaning fume hood, disclosed: a through slot 13 is opened inside the fume hood cabinet 1, and a sliding rod 14 runs through the inside of the through slot 13, a fixed rod 15 is fixedly installed at the tail end of the sliding rod 14, and a limited block 17 is fixedly installed at the head end of the sliding rod 14; a second telescopic spring 16 is connected between the through slot 13 and the fixed rod 15;

[0033] In this structure, when the extrusion block 8 slides downward along the inner side of the extrusion groove 9, the bottom of the extrusion block 8 will contact the limit block 17, and the limit block 17 with an arc-shaped upper surface will move outward through extrusion. When the limit groove 18 at the side end of the extrusion block 8 is in a horizontal and flush state with the limit block 17, the fixed rod 15 is reset by the elastic force of the second telescopic spring 16, thereby pushing the sliding rod 14 to slide along the inner side of the through groove 13, pushing the limit block 17 to the inner side of the limit groove 18 for engagement, and the engagement of the limit groove 18 with the limit block 17 causes the fixed rod 15 to be reset by the elastic force of the second telescopic spring 16. The extrusion block 8 is fixed on the inner side of the through groove 13, so that the glass protection door 6 is blocked on the outside of the fume hood cabinet 1 for protection. When the fume hood cabinet 1 needs to be opened, the fixing rod 15 is manually pulled to make the sliding rod 14 drive the limit block 17 to slide outward along the inner side of the extrusion groove 9. After the limit block 17 is separated from the limit groove 18, the extrusion block 8 is in an active state. At this time, the glass protection door 6 slides upward along the inner side of the isolation plate 4 through the elastic force of the first telescopic spring 5, so that the glass protection door 6 is automatically raised, which is convenient for the use of the fume hood cabinet 1.

[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-cleaning fume hood, comprising a fume hood cabinet (1), wherein a cabinet door (2) is installed at the bottom of the fume hood cabinet (1), and sockets (3) are installed at equal intervals on the outer side of the cabinet frame of the fume hood cabinet (1); Features: Also includes: A cleaning nozzle (12), wherein the cleaning nozzle (12) is fixedly mounted on the inner side of a cabinet frame of the fume hood body (1), and the cleaning nozzle (12) is placed at an angle of 45 degrees with the opening facing the glass protection door (6), and two groups of the cleaning nozzles (12) are arranged symmetrically about the midpoint of the glass protection door (6); A limit block (17), wherein the upper surface of the limit block (17) is in an arc-shaped structure when viewed from the front, and the limit block (17) is arranged on the inner side of the through groove (13), and two groups of the limit blocks (17) are arranged symmetrically about the midpoint of the glass protection door (6), and the limit blocks (17) and the limit grooves (18) form a snap-fit ​​connection structure, and the limit grooves (18) are arranged at both sides of the lower end of the extrusion block (8).

2. A self-cleaning fume hood according to claim 1, characterized in that: The inner side of the fume hood body (1) is a hollow structure, and an isolation plate (4) is fixedly installed on the inner side of the fume hood body (1), and the inner side of the isolation plate (4) is a hollow structure.

3. A self-cleaning fume hood according to claim 2, characterized in that: A first telescopic spring (5) is fixedly mounted on the inner side of the isolation plate (4), and a glass protection door (6) is fixedly connected to the tail end of the first telescopic spring (5), and the glass protection door (6) is made of transparent glass. A handle (7) is fixedly mounted on the outer side of the glass protection door (6), and an extrusion block (8) is fixedly mounted on the bottom of the glass protection door (6).

4. A self-cleaning fume hood according to claim 1, characterized in that: An extrusion groove (9) is provided on the inner side of the fume hood body (1), and an elastic airbag (10) is fixedly installed on the inner side of the extrusion groove (9); the elastic airbag (10) is connected to the cleaning nozzle (12) via an air guide tube (11), and the air guide tube (11) runs through the inner side of the fume hood body (1).

5. A self-cleaning fume hood according to claim 4, characterized in that: The extrusion groove (9) and the extrusion block (8) are distributed in a corresponding manner up and down.

6. A self-cleaning fume hood according to claim 1, characterized in that: A through slot (13) is provided on the inner side of the fume hood body (1), and a sliding rod (14) passes through the inner side of the through slot (13). A fixing rod (15) is fixedly mounted on the rear end of the sliding rod (14), and a limiting block (17) is fixedly mounted on the front end of the sliding rod (14).

7. A self-cleaning fume hood according to claim 6, characterized in that: A second telescopic spring (16) is connected between the through slot (13) and the fixing rod (15).

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