Foreign matter detection device for window of ventilation cabinet

Abstract

The utility model discloses a fume hood window foreign matter detection device which comprises a hood body and a movable window vertically moving on the front face of the hood body, the movable window comprises a base and a protection plate, the lower surface of the protection plate is fixedly connected with the upper surface of the base, a first pull wire is arranged on one side of the upper surface of the base, and a second pull wire is arranged on the other side of the upper surface of the base. One end of the first pull wire is fixedly connected with a sliding block, and the side, away from the first pull wire, of the sliding block is fixedly connected with a second pull wire. According to the utility model, the window of the cabinet body can be conveniently sealed through the arranged movable window, and meanwhile, the pull wire I and the pull wire II are arranged on the two sides of the base in the movable window, so that the movable window can be conveniently driven to transversely move through the pull wire I and the pull wire II when vertically moving, and then the sliding block can detect the falling position of the movable window; and the sliding blocks can also clean the sundries in the detection process, so that the window of the ventilation cabinet has the effect of detecting the foreign matters.

Description

Technical Field

[0001] The utility model relates to the technical field of fume hoods, in particular to a foreign body detection device for a fume hood window. Background Art

[0002] The working principle of the fume hood is mainly based on a negative pressure environment and an effective gas removal system. The interior of the fume hood is usually equipped with a powerful exhaust fan, which extracts the air in the inner cavity of the indoor terminal fume hood through the exhaust duct to form a negative pressure environment relative to the room air pressure. During operation, harmful gases or fumes are sucked away from the exhaust duct by the exhaust fan through the exhaust port on the top of the fume hood, thereby preventing these substances from escaping the fume hood and protecting the health and safety of the operator.

[0003] In addition, some fume hoods are equipped with HEPA filters or other types of filters to further purify the air and remove harmful substances such as microorganisms, dust, smoke and odors. In some cases, fume hoods may also contain conveniences such as sinks and electrical outlets to facilitate laboratory operations.

[0004] When some operators open the fume hood cabinet, some machine accessories and debris fall into the opening window slot, which hinders the normal lowering of the subsequent window cabinet door. In order not to affect the normal use of the fume hood, we designed a fume hood window foreign object detection device. Utility Model Content

[0005] The purpose of the utility model is to provide a foreign body detection device for a fume hood window to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a foreign object detection device for a fume hood window, comprising a cabinet body and a movable window that moves vertically on the front of the cabinet body, and the movable window comprises a base and a protective plate, the lower surface of the protective plate is fixedly connected to the upper surface of the base, a pull wire 1 is provided on one side of the upper surface of the base, one end of the pull wire 1 is fixedly connected to a slider, and the side of the slider away from the pull wire 1 is fixedly connected to a pull wire 2, an oblique square groove is opened on the side of the cabinet body, and a sealing plug is movably connected to the inner wall of the oblique square groove, a pull ring is provided on the bottom of the sealing plug, and a magnetic block is provided on the side of the sealing plug.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Preferably, concave grooves that move vertically with the base are provided on both sides and the bottom of the window on the front side of the cabinet, and a sliding groove that facilitates the lateral movement of the slider is provided on the inner bottom wall of the concave groove. By setting the base, the base can drive the protective plate to move vertically at the window on the front side of the cabinet. At the same time, the movable window is limited by the concave groove so that it can be raised and lowered smoothly.

[0009] Preferably, the shape of the slider is an inverted convex letter "Q", and the cross-sectional shape of the upper part of the slider is a square, and the cross-sectional shape of the lower part of the slider is an isosceles trapezoid. Semicircular rings are provided on both sides of the slider for fixing the pull wire one and the pull wire two. By setting the slider, it is convenient for the slider to detect the position below the base to prevent debris from being stuck under the base and affecting the normal use of the movable window.

[0010] Preferably, oblique square grooves are provided on both sides of the cabinet, and the inner top wall of the oblique square groove is connected to the bottom of the slide groove at the cabinet window. By providing the oblique square groove on the side of the cabinet, it is convenient to discharge the debris in the slide groove in the cabinet through the oblique square groove.

[0011] Preferably, there are two sealing plugs, and both sides of the two sealing plugs are fixedly connected with magnetic blocks. The inner two side walls of the oblique groove are provided with limit grooves that slide vertically with the magnetic blocks. By arranging magnetic blocks on the sides of the sealing plugs, the sealing plugs can be easily connected and magnetically fixed to the cabinet through the magnetic blocks.

[0012] Preferably, the bottom of the two side walls of the concave groove on the front side of the cabinet are provided with slots compatible with the slider, and wire holes compatible with pull wire one and pull wire two are respectively provided on both sides of the concave groove and the facing surfaces of the two slots. By setting the slots on the two side walls inside the concave groove, it is convenient to store the slider to make room for the lowered base.

[0013] Preferably, one end of the pull wire 2 away from the slider is fixedly connected to one side of the lower surface of the base, and a triangular groove is provided on one side of the upper surface and the lower surface of the base. By arranging the pull wire 1 and the pull wire 2, it is convenient to drive the slider to move horizontally when the movable window moves vertically, so that the slider can detect the bottom of the movable window to prevent debris from affecting the normal downward movement of the movable window.

[0014] Beneficial Effects

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0016] The utility model facilitates closing the window of the cabinet through the movable window. At the same time, by arranging a pull wire one and a pull wire two on both sides of the base of the movable window, the movable window can be driven to slide horizontally by the pull wire one and the pull wire two when moving vertically, so that the slider can detect the falling position of the movable window to prevent debris from affecting the normal downward movement of the movable window. The slider can also clean up the debris during the detection process, so that the window of the fume hood has the effect of detecting foreign matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front section structure of the utility model;

[0018] Figure 2 This is an enlarged structural diagram of the slider of the utility model;

[0019] Figure 3 for Figure 1 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1, cabinet; 2, movable window; 201, base; 202, protective plate; 3, pull wire 1; 4, slider; 5, pull wire 2; 6, oblique square groove; 7, sealing plug; 8, pull ring; 9, magnetic block; 10, concave groove; 11, slide groove; 12, card slot; 13, wire hole. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-3 The utility model provides a technical solution: a foreign body detection device for a fume hood window, comprising a cabinet body 1 and a movable window 2 that moves vertically on the front of the cabinet body 1, and the movable window 2 comprises a base 201 and a protective plate 202, the lower surface of the protective plate 202 is fixedly connected to the upper surface of the base 201, and the inner sides and bottom of the window on the front of the cabinet body 1 are provided with concave grooves 10 that move vertically with the base 201, and the inner bottom wall of the concave groove 10 is provided with a sliding groove 11 that facilitates the lateral movement of a slider 4. By setting the base 201, it is convenient for the base 201 to drive the protective plate 202 to move vertically at the window on the front of the cabinet body 1, and at the same time, the movable window 2 is limited by the concave groove 10 so that it can be smoothly raised and lowered.

[0023] A pull wire 1 3 is provided on one side of the upper surface of the base 201, one end of the pull wire 1 3 is fixedly connected to a slider 4, and a side of the slider 4 away from the pull wire 1 3 is fixedly connected to a pull wire 2 5, and one end of the pull wire 2 5 away from the slider 4 is fixedly connected to one side of the lower surface of the base 201, and one side of the upper surface and the lower surface of the base 201 are both provided with triangular grooves. By arranging the pull wire 1 3 and the pull wire 2 5, it is convenient to drive the slider 4 to move horizontally when the movable window 2 moves vertically, so that the slider 4 can detect the bottom of the movable window 2 to prevent debris from affecting the normal downward movement of the movable window 2.

[0024] The shape of the slider 4 is an inverted convex letter "U", and the cross-sectional shape of the upper part of the slider 4 is a square, and the cross-sectional shape of the lower part of the slider 4 is an isosceles trapezoid. Semicircular rings are provided on both sides of the slider 4 for fixing the pull wire 1 3 and the pull wire 2 5. By providing the slider 4, it is convenient for the slider 4 to detect the position below the base 201 to prevent debris from being stuck under the base 201 and affecting the normal use of the movable window 2.

[0025] Furthermore, the bottom of the two side walls of the concave groove 10 on the front side of the cabinet 1 are provided with card slots 12 compatible with the slider 4, and the two sides of the concave groove 10 and the facing surfaces of the two card slots 12 are respectively provided with wire holes 13 compatible with the pull wire 1 3 and the pull wire 2 5. By arranging the card slots 12 on the two side walls of the concave groove 10, it is convenient to store the slider 4 so as to make room for the lowered base 201.

[0026] An oblique groove 6 is provided on the side of the cabinet 1, and an oblique groove 6 is provided on both sides of the cabinet 1, and the inner top wall of the oblique groove 6 is connected to the bottom of the slide groove 11 at the window of the cabinet 1. By providing the oblique groove 6 on the side of the cabinet 1, it is convenient to discharge the debris in the slide groove 11 in the cabinet 1 through the oblique groove 6.

[0027] A sealing plug 7 is movably connected to the inner wall of the oblique groove 6, a pull ring 8 is provided at the bottom of the sealing plug 7, a magnetic block 9 is provided on the side of the sealing plug 7, there are two sealing plugs 7, and both sides of the two sealing plugs 7 are fixedly connected with magnetic blocks 9, and the inner side walls of the oblique groove 6 are provided with limit grooves that slide vertically with the magnetic blocks 9. By arranging the magnetic blocks 9 on the sides of the sealing plug 7, it is convenient to clamp and fix the sealing plug 7 to the cabinet 1 through the magnetic blocks 9.

[0028] In this embodiment, the movable window 2 is provided to facilitate closing the window of the cabinet 1. At the same time, by arranging a pull wire 1 3 and a pull wire 2 5 on both sides of the base 201 in the movable window 2, the movable window 2 can be driven to slide horizontally by the pull wire 1 3 and the pull wire 2 5 when moving vertically, so that the slider 4 can detect the falling position of the movable window 2 to prevent debris from affecting the normal downward movement of the movable window 2. The slider 4 can also clean up the debris during the detection process, so that the window of the fume hood has the effect of detecting foreign objects.

[0029] 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 fume hood window foreign body detection device, characterized in that: The invention comprises a cabinet (1) and a movable window (2) which moves vertically on the front of the cabinet (1), wherein the movable window (2) comprises a base (201) and a protective plate (202), wherein the lower surface of the protective plate (202) is fixedly connected to the upper surface of the base (201), a pull wire (3) is arranged on one side of the upper surface of the base (201), one end of the pull wire (3) is fixedly connected to a slider (4), and a side of the slider (4) away from the pull wire (3) is fixedly connected to a pull wire (5), an oblique square groove (6) is provided on the side of the cabinet (1), and a sealing plug (7) is movably connected to the inner wall of the oblique square groove (6), a pull ring (8) is arranged on the bottom of the sealing plug (7), and a magnetic block (9) is arranged on the side of the sealing plug (7).

2. A fume hood window foreign body detection device according to claim 1, characterized in that: The window on the front side of the cabinet (1) is provided with concave grooves (10) on both sides and the bottom thereof, which can move vertically with the base (201), and the inner bottom wall of the concave groove (10) is provided with sliding grooves (11) which facilitate the lateral movement of the slider (4).

3. A fume hood window foreign body detection device according to claim 1, characterized in that: The shape of the slider (4) is an inverted convex letter, and the cross-sectional shape of the upper part of the slider (4) is a square, and the cross-sectional shape of the lower part of the slider (4) is an isosceles trapezoid. Semicircular rings are provided on both sides of the slider (4) to facilitate the fixing of the first pull wire (3) and the second pull wire (5).

4. A fume hood window foreign body detection device according to claim 1, characterized in that: Oblique square grooves (6) are provided on both sides of the cabinet (1), and the inner top wall of the oblique square groove (6) is connected to the bottom of the sliding groove (11) at the window of the cabinet (1).

5. The fume hood window foreign body detection device according to claim 1, characterized in that: There are two sealing plugs (7), and both sides of the two sealing plugs (7) are fixedly connected to magnetic blocks (9), and both inner side walls of the oblique square groove (6) are provided with limiting grooves that slide vertically with the magnetic blocks (9).

6. A fume hood window foreign body detection device according to claim 1, characterized in that: The bottom of both side walls of the concave groove (10) on the front of the cabinet (1) are provided with slots (12) adapted to the slider (4), and both sides of the concave groove (10) and the facing surfaces of the two slots (12) are provided with wire holes (13) adapted to the first pull wire (3) and the second pull wire (5).

7. A fume hood window foreign body detection device according to claim 1, characterized in that: One end of the second pull wire (5) away from the slider (4) is fixedly connected to one side of the base (201), and one side of the upper surface and the lower surface of the base (201) are both provided with triangular grooves.

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