Limiting cabinet door of ventilation cabinet

Abstract

The utility model relates to the technical field of test equipment, and provides a fume hood limiting cabinet door which comprises a fume hood body, an opening is formed in the front side face of the fume hood body, a cabinet door is arranged at the position of the opening, the cabinet door comprises a door frame and a door plate fixed in the door frame, and an operation opening is formed in the door plate. The lacing ring can wrap an arm to reduce air passing, an operator can carry out experiment operation before the ventilation cabinet body, if the position needs to be moved, the operation plate can be pushed to horizontally slide in the limiting frame in the length direction of the guide rail, and then the operation position can be adjusted; and the organ blades can be correspondingly folded or unfolded along with the left-right sliding of the operating part, so that the mobility of the operating part is ensured, and the two sides of the operating part are sealed to reduce the outward dispersion of air in the air cabinet body, and the sealing performance of the air is improved while the flexible operability is ensured, so that the service life of the air cabinet body is prolonged. The problem that in the prior art, the cabinet door opening degree is small, and experiment operation is limited is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment, and in particular to a fume hood limit cabinet door. Background Art

[0002] Fume hoods are commonly used equipment in chemical laboratories. Various harmful gases and smoke are often produced during chemical experiments. In order to protect the safety of users and prevent the pollutants in the experiment from spreading to the laboratory, fume hoods are used to effectively exhaust smoke, provide a safer operating space for experimental staff, and reduce the possibility of experimental accidents.

[0003] After searching, the publication number 216305731U discloses a fume hood limited cabinet door, which includes a frame and a glass window installed in the frame, and the fume hood is vertically provided with slide grooves on both sides of the frame, and the cabinet door is slidably installed on the fume hood through the slide grooves, and a fixing mechanism is provided on the frame, and a fixing plate is installed on the fume hood and located in the slide groove along the length direction of the slide groove, and the fixing mechanism is used to fix the cabinet door at different positions on the fixing plate.

[0004] However, the above-mentioned fume hood limited door still has the following problems: in order to reduce air dispersion, the above-mentioned fume hood limited door is adjusted to a lower position so that the door opening is smaller. Therefore, the operation of the experimenter during the experiment will be restricted by the door. In addition, although the door opening is smaller, it is still not closed enough and air dispersion still occurs on the outside of the arm. Utility Model Content

[0005] The utility model provides a fume hood limited cabinet door, which solves the problem in the prior art that the cabinet door has a small opening degree and the experimental operation is restricted.

[0006] The technical solution of the utility model is as follows: a fume hood limited cabinet door, comprising a fume hood body, an opening formed on the front side of the fume hood body, a cabinet door arranged at the opening, the cabinet door comprising a door frame and a door panel fixed in the door frame, an operating opening formed on the door panel, a limited frame fixed in the operating opening, an operating component slidably arranged in the limited frame, two movable grooves symmetrically formed on the operating component, first closing components arranged in the two movable grooves, and second closing components symmetrically arranged on both sides of the operating component.

[0007] Preferably, the limiting frame comprises an outer frame, and upper and lower outer side surfaces of the outer frame are provided with card slots, and the outer frame is fixedly clamped in the operating port through the upper and lower card slots.

[0008] Preferably, guide rails are provided on the inner side surfaces of the upper and lower parts of the outer frame, and retaining edges are provided on the front and rear sides of the outer frame located on the guide rails.

[0009] Preferably, the operating component comprises an operating plate, and fixing plates are fixed to the upper and lower ends of the operating plate, and both ends of the fixing plate are provided with a clamping seat, and the clamping seat is slidably clamped on the outside of the guide rail.

[0010] Preferably, the first closing member comprises an elastic diaphragm, which is circular in shape, whose outer edge is sealed to the movable groove by glue, a circular hole is provided at the center of the elastic diaphragm, and a tightening ring is sealed and fixed in the circular hole by glue.

[0011] Preferably, the second closing member is specifically an accordion leaf, one end of the accordion leaf is fixed to the inner side wall of the outer frame, and the other end of the accordion leaf is fixed to the operating panel.

[0012] Preferably, the accordion blades are located between the front and rear ribs.

[0013] Preferably, the width of the accordion leaves is equal to the distance between the upper and lower inner walls of the outer frame.

[0014] Preferably, a fixing piece for fixing the operating panel is provided on the fixing plate located below.

[0015] Preferably, the fixing member comprises a knob, a threaded rod is fixed to the bottom end of the knob, and the threaded rod is threadedly connected to the knob and abuts against the rail surface of the lower guide rail.

[0016] The beneficial effects of the utility model are:

[0017] The outer edge of the elastic diaphragm in the utility model is evenly stressed, while the inner side is tightened toward the center by the tightening ring, so that the elastic diaphragm is in a tensioned state. When in use, the arm can be passed through the tightening ring, and the tightening ring can be wrapped around the outside of the arm to reduce air passing through. The operator can perform experimental operations in front of the fume hood. If the position needs to be moved, the operating panel can be pushed to slide horizontally along the length direction of the guide rail in the limit frame, and then the operating position can be adjusted. The accordion leaves are folded or unfolded accordingly as the operating component slides left and right, thereby ensuring the mobility of the operating component while closing both sides of the operating component to reduce the outward dispersion of air in the air cabinet. The utility model can improve the air sealing while ensuring flexible operability, and solves the problem of limited experimental operations due to the small opening degree of the cabinet door in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a schematic diagram of a fume hood;

[0020] Figure 2 This is a schematic diagram of a fume hood limited door structure proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the limit frame structure proposed by the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the limiting frame proposed by the utility model;

[0023] Figure 5 This is a schematic diagram of the operating components and accordion leaf structure proposed by the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the operating components proposed by the utility model;

[0025] In the figure: 1. ventilation cabinet body; 2. opening; 3. cabinet door; 31. door frame; 32. door panel; 33. operating port; 34. limit frame; 341. outer frame; 342. slot; 343. retaining edge; 344. guide rail; 35. operating component; 351. operating panel; 352. fixing plate; 353. holder; 354. movable slot; 355. elastic diaphragm; 356. tightening ring; 357. knob; 358. threaded rod; 36. accordion leaf. DETAILED DESCRIPTION

[0026] The following will be combined with 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 of 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.

[0027] See also Figure 1 and Figure 2 The utility model provides a technical solution: a fume hood limited door, comprising a fume hood body 1, an opening 2 is provided on the front side of the fume hood body 1, a cabinet door 3 is arranged at the opening 2, the cabinet door 3 and the fume hood body 1 are slidably arranged, and can move up and down at the opening 2. For details, please refer to the referenced documents. The cabinet door 3 comprises a door frame 31 and a door panel 32 fixed in the door frame 31. The door panel 32 adopts transparent tempered glass. An operation opening 33 is provided on the door panel 32. A limited position frame 34 is fixed in the operation opening 33. The limited position frame 34 comprises an outer frame 341. The upper and lower outer sides of the outer frame 341 are both provided with card grooves 342. The outer frame 341 is fixedly clamped in the operation opening 33 through the upper and lower card grooves 342, and the operation opening 33 on the door panel 32 is covered to avoid scratching the arm when moving left and right.

[0028] See also Figure 3 and Figure 4An operating component 35 is slidably arranged in the limit frame 34, and the operating component 35 includes an operating plate 351. Fixed plates 352 are fixed to the upper and lower ends of the operating plate 351, and sockets 353 are provided at both ends of the fixed plate 352. Guide rails 344 are provided on the upper and lower inner sides of the outer frame 341. The sockets 353 are slidably arranged on the outside of the guide rails 344, so that the operating plate 351 can slide horizontally along the length direction of the guide rails 344 in the limit frame 34, thereby adjusting the operating position.

[0029] See also Figure 5 and Figure 6 Two movable grooves 354 are symmetrically provided on the operating component 35, and a first closing member is arranged in the two movable grooves 354. The first closing member includes an elastic diaphragm 355, which is circular. The outer edge of the elastic diaphragm 355 is sealed and connected to the movable groove 354 by glue. A circular hole is provided at the center of the elastic diaphragm 355, and a tightening ring 356 is sealed and fixed in the circular hole by glue. The outer edge of the elastic diaphragm 355 is evenly stressed, while the inner side is tightened toward the center by the tightening ring 356, so that the elastic diaphragm 355 is in a tensioned state. When the arm is passed through the tightening ring 356, the tightening ring 356 can be wrapped around the arm to reduce the passage of air.

[0030] The second closing parts are symmetrically arranged on both sides of the operating part 35, and the second closing parts are specifically accordion leaves 36. One end of the accordion leaves 36 is fixed to the inner wall of the outer frame 341, and the other end of the accordion leaves 36 is fixed to the operating panel 351. The outer frame 341 is located on the front and rear sides of the guide rail 344 and is provided with ribs 343. The accordion leaves 36 are located between the front and rear ribs 343. The width of the accordion leaves 36 is equal to the distance between the upper and lower inner walls of the outer frame 341. The upper and lower parts of the accordion leaves 36 are in contact with the inner wall of the outer frame 341. The accordion leaves 36 can be folded or unfolded accordingly as the operating part 35 slides left and right, thereby ensuring the mobility of the operating part 35 while closing both sides of the operating part 35 to reduce the outward dispersion of air in the air cabinet.

[0031] A fixing part for fixing the operating panel 351 is provided on the fixing plate 352 located below, and the fixing part includes a knob 357, and a threaded rod 358 is fixed to the bottom end of the knob 357. The threaded rod 358 is threadedly connected to the knob 357 and abuts against the rail surface of the lower guide rail 344. The operating panel 351 can be fixed or loosened by turning the knob 357.

[0032] The working principle and use process of the utility model are as follows: the outer edge of the elastic diaphragm 355 of the utility model is evenly stressed, and the inner side is tightened toward the center by the tightening ring 356, so that the elastic diaphragm 355 is in a tensioned state. When in use, the arm can be passed through the tightening ring 356, and the tightening ring 356 can be wrapped around the outside of the arm to reduce the passage of air. The operator can perform experimental operations in front of the fume hood 1. If the position needs to be moved, the operating plate 351 can be pushed to slide horizontally along the length direction of the guide rail 344 in the limit frame 34, so as to adjust the operating position, and the accordion leaves 36 can be folded or unfolded accordingly as the operating component 35 slides left and right, thereby ensuring the mobility of the operating component 35 while closing both sides of the operating component 35 to reduce the outward dispersion of air in the air cabinet, which can improve the air sealing while ensuring flexible operability.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fume hood limited door, comprising a fume hood body (1), the front side of the fume hood body (1) is provided with an opening (2), the opening (2) is provided with a door (3), characterized in that: The cabinet door (3) comprises a door frame (31), a door panel (32) fixed in the door frame (31), an operating opening (33) is provided on the door panel (32), a limit frame (34) is fixed in the operating opening (33), an operating component (35) is slidably arranged in the limit frame (34), two movable grooves (354) are symmetrically provided on the operating component (35), a first closing component is arranged in the two movable grooves (354), and second closing components are symmetrically arranged on both sides of the operating component (35).

2. A fume hood limit door according to claim 1, characterized in that: The limiting frame (34) comprises an outer frame (341), the upper and lower outer side surfaces of the outer frame (341) are both provided with clamping grooves (342), and the outer frame (341) is fixedly clamped in the operating port (33) through the upper and lower clamping grooves (342).

3. A fume hood limit door according to claim 2, characterized in that: The upper and lower inner side surfaces of the outer frame (341) are both provided with guide rails (344), and the front and rear sides of the outer frame (341) located on the guide rails (344) are both provided with retaining edges (343).

4. A fume hood limit door according to claim 3, characterized in that: The operating component (35) comprises an operating plate (351), the upper and lower ends of the operating plate (351) are fixed with fixing plates (352), both ends of the fixing plate (352) are provided with a clamping seat (353), and the clamping seat (353) is slidably clamped on the outside of the guide rail (344).

5. A fume hood limit door according to claim 4, characterized in that: The first closing member comprises an elastic diaphragm (355), the elastic diaphragm (355) is circular, the outer edge of the elastic diaphragm (355) is sealed and connected to the movable groove (354) by glue, a circular hole is opened at the center of the elastic diaphragm (355), and a tightening ring (356) is sealed and fixed in the circular hole by glue.

6. A fume hood limit door according to claim 4, characterized in that: The second closing member is specifically an accordion leaf (36), one end of the accordion leaf (36) is fixed to the inner wall of the outer frame (341), and the other end of the accordion leaf (36) is fixed to the operating panel (351).

7. A fume hood limit door according to claim 6, characterized in that: The accordion blade (36) is located between the front and rear ribs (343).

8. The fume hood limit door according to claim 7, characterized in that: The width of the accordion leaves (36) is equal to the distance between the upper and lower inner walls of the outer frame (341).

9. The fume hood limit door according to claim 4, characterized in that: The fixing plate (352) located below is provided with a fixing piece for fixing the operating plate (351).

10. A fume hood limit door according to claim 9, characterized in that: The fixing member comprises a knob (357), a threaded rod (358) is fixed to the bottom end of the knob (357), and the threaded rod (358) is threadedly connected to the knob (357) and abuts against the rail surface of the lower guide rail (344).

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