Laboratory ventilation device

Abstract

The utility model discloses a laboratory ventilation device which comprises a ventilation cabinet, the ventilation cabinet comprises a ventilation cabinet body and a fixed window, and the fixed window is fixed to the upper section of the side edge of the ventilation cabinet body; the positioning assembly comprises a supporting plate, a movable hole, an identification plate, a limiting ring, a supporting ring, a T-shaped movable rod and a spring, the supporting plate is fixed to the side edge of the ventilation cabinet body, the movable hole is formed in one end of the supporting plate, the identification plate is fixed to the supporting plate, and the limiting ring and the supporting ring are movably connected to the two sides of the supporting plate; the T-shaped movable rod is inserted into the middle of the limiting ring and the middle of the supporting ring, the T-shaped movable rod is sleeved with the spring, one end of the spring is fixed to the side edge of the supporting ring, and the other end of the spring is fixed to the T-shaped movable rod. The problems that due to different heights of experimenters, the position of a movable window needs to be adjusted in each experiment so as to achieve the best effect of avoiding harmful gas, and time and labor are wasted are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ventilation equipment technical field, especially a laboratory ventilation device. BACKGROUND

[0002] The laboratory ventilation device is an important equipment for removing harmful gas and protecting the safety of experimental environment. The laboratory ventilation device mainly includes a fume hood, an air suction cover and an exhaust fan. The existing fume hood needs to pull the lower end of the movable window to the nose of the experimental personnel to ensure that harmful gas is not inhaled during use.

[0003] Because of the different heights of the experimental personnel, the position of the movable window needs to be adjusted every time to achieve the best effect of avoiding harmful gas, which is time-consuming and laborious. Therefore, a laboratory ventilation device is needed to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a laboratory ventilation device to solve the problem of different heights of experimental personnel, which needs to adjust the position of the movable window every time to achieve the best effect of avoiding harmful gas.

[0005] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0006] The utility model relates to a laboratory ventilation device, which comprises:

[0007] The fume hood comprises a fume hood cabinet and a fixed window, and the fixed window is fixed on the side edge of the upper section of the fume hood cabinet.

[0008] The positioning assembly comprises a support plate, a movable hole, an identification plate, a limiting ring, a supporting ring, a T-shaped movable rod and a spring. The support plate is fixed on the side edge of the fume hood cabinet, the movable hole is arranged at one end of the support plate, the identification plate is fixed on the support plate, the limiting ring and the supporting ring are movably connected to the two sides of the support plate, the T-shaped movable rod is inserted into the middle part of the limiting ring and the supporting ring, the spring is sleeved on the T-shaped movable rod, one end of the spring is fixed on the side edge of the supporting ring, and the other end of the spring is fixed on the T-shaped movable rod.

[0009] Further, the positioning assembly further comprises a connecting rod and a first through hole. The connecting rod is fixed on the side edge of the supporting ring, and the connecting rod is screwed on the inner side of the limiting ring. The first through hole is arranged in the middle part of the supporting ring and the connecting rod, and the T-shaped movable rod is inserted into the first through hole.

[0010] Further, the connecting rod and the T-shaped movable rod are movably connected to the movable hole.

[0011] Further, the fume hood further comprises a movable window, which is movably connected to the side of the fume hood cabinet and is attached to the side of the fixed window.

[0012] Further, the fume hood further comprises a movable window, which is movably connected to the side of the fume hood cabinet and is attached to the side of the fixed window.

[0013] Further, the fume hood further comprises a movable window, which is movably connected to the side of the fume hood cabinet and is attached to the side of the fixed window.

[0014] Compared with the prior art, the fume hood has the following advantages:

[0015] Firstly, the positioning assembly is arranged, the connecting rod is inserted into the movable hole, the limiting ring is screwed on the connecting rod from the other side of the supporting plate, the height of the movable window suitable for each experimental personnel is marked on the identification plate, before the experiment, the T-shaped movable rod is pulled to drive the supporting ring and the limiting ring to move along the movable hole, when the T-shaped movable rod moves to the position marked on the identification plate, the T-shaped movable rod is stopped, the T-shaped movable rod is pressed to move along the first through hole, the other end of the T-shaped movable rod moves below the movable window, the movable window is pulled to make the lower end of the movable window attached to the T-shaped movable rod, then the T-shaped movable rod is released, and under the action of the spring, the T-shaped movable rod is reset, so that the movable window can be quickly moved to the appropriate position during the experiment, and the experimental efficiency is improved.

[0016] Secondly, the convenient assembly is arranged, when the fume hood needs to be cleaned and maintained, the supporting plate is rotated to drive the upper end of the Z-shaped plate to rotate around the rotating shaft in the second through hole, the lower end of the Z-shaped plate is away from the limiting rod, and the supporting plate is rotated out of the inner side of the fume hood cabinet, so that the fume hood cabinet is convenient to maintain and clean. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0019] Figure 2 It is a schematic diagram of the overall structure of the present application; Figure 1 It is an enlarged view of A in the middle;

[0020] Figure 3The utility model discloses a positioning assembly part structure schematic view.

[0021] Figure 4 The utility model discloses a convenient assembly structure schematic view.

[0022] In the drawing, the component list that each sign represents is as follows:

[0023] 10, fume chamber cabinet body, 11, fixed window, 12, mobile window, 20, support plate, 21, movable hole, 22, mark plate, 23, limiting ring, 24, support ring, 25, connecting rod, 26, first through -hole, 27, T type movable rod, 28, spring, 30, Z type plate, 31, second through -hole, 32, groove, 33, pivot, 34, limiting rod. DETAILED DESCRIPTION

[0024] In order to make the above -mentioned purpose, feature and advantage of the utility model more obvious and easy to understand, the specific embodiment of the utility model is explained in detail below with the accompanying drawings.

[0025] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description, and the person skilled in the art can make similar extension without violating the connotation of the utility model, therefore the utility model is not limited to the following disclosed specific embodiment.

[0026] In order to make the purpose, technical scheme and advantage of the utility model more clear, the embodiment of the utility model will be further described in detail below with the accompanying drawings.

[0027] Please refer to Figures 1-3 The utility model discloses a laboratory ventilation device, including:

[0028] Fume chamber, the fume chamber includes fume chamber cabinet body 10 and fixed window 11, and the fixed window 11 is fixed on the side edge upper section of fume chamber cabinet body 10.

[0029] The fume chamber still includes mobile window 12, and the mobile window 12 is movably connected on the side edge of fume chamber cabinet body 10 and is attached to the side edge of fixed window 11.

[0030] Fume chamber cabinet body 10 can be used as experiment, and the top is provided with fan and suction pipe, is used for discharging harmful gas, and fixed window 11 and mobile window 12 can avoid gas diffusion to the outside, and mobile window 12 has self -locking function, through sensor and control system, when the sliding door reaches the specified position, the sensor will trigger locking device, and automatically lock the sliding door in the current position.

[0031] The positioning assembly includes a support plate 20, a movable hole 21, an identification plate 22, a limiting ring 23, a support ring 24, a T-shaped movable rod 27, and a spring 28. The support plate 20 is fixed to the side of the fume hood body 10. The movable hole 21 is opened at one end of the support plate 20. The identification plate 22 is fixed on the support plate 20. The limiting ring 23 and the support ring 24 are movably connected to both sides of the support plate 20. The T-shaped movable rod 27 is inserted into the middle of the limiting ring 23 and the support ring 24. The spring 28 is sleeved on the T-shaped movable rod 27, with one end of the spring 28 fixed to the side of the support ring 24 and the other end fixed to the T-shaped movable rod 27.

[0032] The positioning assembly also includes a connecting rod 25 and a first through hole 26. The connecting rod 25 is fixed to the side of the support ring 24 and screwed into the inner side of the limiting ring 23. The first through hole 26 is opened in the middle of the support ring 24 and the connecting rod 25, and the T-shaped movable rod 27 is inserted into the first through hole 26.

[0033] The connecting rod 25 and the T-shaped movable rod 27 are movably connected within the movable hole 21;

[0034] The support plate 20 provides support, the movable hole 21 provides adjustment, the marking plate 22 provides recording, the limiting ring 23 and the support ring 24 work together to limit movement, the connecting rod 25 provides connection, the first through hole 26 facilitates the movement of the T-shaped movable rod 27, the T-shaped movable rod 27 provides positioning, and the spring 28 has a reset function.

[0035] Working principle:

[0036] The connecting rod 25 is inserted into the movable hole 21, and the limiting ring 23 is screwed onto the connecting rod 25 from the other side of the support plate 20. The appropriate height of the movable window 12 for each experimenter is marked on the label plate 22. Before the experiment, the T-shaped movable rod 27 is pulled, which moves the support ring 24 and the limiting ring 23 along the movable hole 21. When the T-shaped movable rod 27 moves to the position marked on the label plate 22, it stops. The T-shaped movable rod 27 is then pressed to move along the first through hole 26. The other end of the T-shaped movable rod 27 moves to the bottom of the movable window 12. The movable window 12 is then pulled so that its lower end fits against the T-shaped movable rod 27. Then the T-shaped movable rod 27 is released, and under the action of the spring 28, the T-shaped movable rod 27 returns to its original position.

[0037] This step allows the movable window 12 to be quickly moved to the appropriate position required for the experiment, improving experimental efficiency.

[0038] Please see Figure 4 This embodiment, based on the above embodiments, further includes:

[0039] The convenient assembly comprises a Z-shaped plate 30, a second through hole 31 and a rotating shaft 33, one end of the rotating shaft 33 is fixed to the side of the fume chamber cabinet 10, the second through hole 31 is arranged on the upper end of the Z-shaped plate 30, and the second through hole 31 is sleeved on the rotating shaft 33;

[0040] The convenient assembly further comprises a slot 32 and a limiting rod 34, one end of the limiting rod 34 is fixed to the side of the fume chamber cabinet 10, and the slot 32 is arranged on the lower end of the Z-shaped plate 30 and movably connected to the limiting rod 34;

[0041] The Z-shaped plate 30 serves as a connecting function, the second through hole 31 serves as a connecting function, the rotating shaft 33 serves as a supporting function, and the slot 32 and the limiting rod 34 serve as a limiting function.

[0042] Working principle:

[0043] When the fume chamber needs to be cleaned and maintained, the supporting plate 20 is rotated to drive the upper end of the Z-shaped plate 30 to rotate around the rotating shaft 33 in the second through hole 31, the lower end of the Z-shaped plate 30 is rotated away from the limiting rod 34, and the supporting plate 20 is rotated out of the inside of the fume chamber cabinet 10.

[0044] This step facilitates the later maintenance and cleaning of the fume chamber cabinet 10.

[0045] In the description of the present application, it should be further pointed out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Finally, it should be pointed out that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A laboratory ventilation device, characterized in that, include: The fume hood includes a fume hood body (10) and a fixed window (11), wherein the fixed window (11) is fixed to the upper side of the fume hood body (10); The positioning assembly includes a support plate (20), a movable hole (21), an identification plate (22), a limiting ring (23), a support ring (24), a T-shaped movable rod (27), and a spring (28). The support plate (20) is fixed to the side of the fume hood cabinet (10). The movable hole (21) is opened at one end of the support plate (20). The identification plate (22) is fixed on the support plate (20). The limiting ring (23) and the support ring (24) are movably connected to both sides of the support plate (20). The T-shaped movable rod (27) is inserted into the middle of the limiting ring (23) and the support ring (24). The spring (28) is sleeved on the T-shaped movable rod (27), and one end of the spring (28) is fixed to the side of the support ring (24), and the other end is fixed to the T-shaped movable rod (27).

2. A laboratory ventilation device according to claim 1, characterized in that, The positioning assembly also includes a connecting rod (25) and a first through hole (26). The connecting rod (25) is fixed to the side of the support ring (24) and screwed into the inner side of the limiting ring (23). The first through hole (26) is opened in the middle of the support ring (24) and the connecting rod (25), and the T-shaped movable rod (27) is inserted into the first through hole (26).

3. A laboratory ventilation device according to claim 2, characterized in that, The connecting rod (25) and the T-shaped movable rod (27) are movably connected in the movable hole (21).

4. A laboratory ventilation device according to claim 1, characterized in that, The fume hood also includes a movable window (12), which is movably connected to the side of the fume hood body (10) and fits against the side of the fixed window (11).

5. A laboratory ventilation device according to claim 1, characterized in that, It also includes a convenient component, which includes a Z-shaped plate (30), a second through hole (31) and a pivot (33). One end of the pivot (33) is fixed to the side of the fume hood cabinet (10), and the second through hole (31) is opened at the upper end of the Z-shaped plate (30) and is sleeved on the pivot (33).

6. A laboratory ventilation device according to claim 5, characterized in that, The convenient component also includes a slot (32) and a limiting rod (34). One end of the limiting rod (34) is fixed to the side of the fume hood cabinet (10), and the slot (32) is opened at the lower end of the Z-shaped plate (30) and is movably connected to the limiting rod (34).

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