Fume hood for preventing contamination during the crushing of plant samples

Abstract

The utility model relates to the technical field of experimental equipment, and in particular to a fume hood for preventing pollution during the crushing process of plant samples, which can be used to prevent dust pollution during the crushing operation during the sample experiment. The fume hood includes a box, a fan and a dust collecting device. The box is surrounded by a left side plate, a right side plate, a top plate, a bottom plate, a front plate and a rear plate. The front plate is a transparent operating window, and an operating hole is arranged on the operating window. The operating window is suitable for switching between an open state and a closed state to form the opening and closing of the box; the fan is arranged on the box and is connected with the internal space of the box; the dust collecting device is connected to the fan through an exhaust pipe. The crushing process of the experimental sample is carried out in the box, and the dust generated by the crushing is sucked by the fan, and the dust enters the dust collecting device through the exhaust pipe for collection. The dust generated during the crushing process is finally collected in the dust collecting device, and the dust will not be discharged, so as to protect the experimenter and the equipment and environment in the laboratory from the harm of the crushing dust.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a fume hood used for preventing pollution in a plant sample crushing process. Background Art

[0002] In the process of analyzing samples in the laboratory, it is often necessary to crush the samples. Take plant samples as an example. In order to conduct in-depth analysis of plant samples, it is necessary to crush the dried plant samples to further determine the physical and chemical indicators of the samples. The crushing process is generally carried out indoors (laboratory). However, in the process of crushing plant samples, if there is no anti-pollution device and the grinder is exposed to the air, the dust generated will invade various precision instruments and equipment and the body of the experimenter without restraint and find gaps. It is very difficult to clean up, and long-term accumulation can easily affect the normal operation of instruments and equipment and damage the health of the experimenter. At the same time, dust floating in the air will pollute the environment and become a health-threatening allergen. Utility Model Content

[0003] The utility model provides a fume hood for preventing pollution in the process of crushing plant samples, which is used to solve the defect in the prior art that dust is easily generated when crushing samples in the laboratory, thereby endangering the health of equipment and instruments and experimenters, and can protect experimenters and the environment during convenient and efficient sample crushing work.

[0004] The utility model provides a fume hood for preventing pollution in a plant sample crushing process, comprising:

[0005] The box body is formed by a left side plate, a right side plate, a top plate, a bottom plate, a front plate and a rear plate. The front plate is a transparent operation window. An operation hole is provided on the operation window. The operation window is suitable for switching between an open state and a closed state to form the opening and closing of the box body.

[0006] A fan is disposed on the box body and communicated with the internal space of the box body;

[0007] A dust collecting device is connected to the fan through an exhaust pipe.

[0008] According to a fume hood for preventing pollution in a plant sample crushing process provided by the utility model, the operating window comprises:

[0009] A fixed window, fixedly installed between the left side plate and the right side plate of the box;

[0010] The sliding operation window is slidably installed between the left side plate and the right side plate of the box body, and is suitable for approaching or moving away from the fixed window to realize opening and closing of the box body; the sliding operation window is symmetrically provided with two operation holes.

[0011] According to a fume hood for preventing pollution during a plant sample crushing process provided by the utility model, the fixed window is located at the upper part between the left side plate and the right side plate of the box body, a hole groove is provided at the lower part of the fixed window, a locking shaft is provided on the sliding operation window, and it is suitable for achieving relative fixation of the sliding operation window and the fixed window through the cooperation of the locking shaft and the hole groove; a handle is also provided on the sliding operation window.

[0012] According to the utility model, a fume hood for preventing pollution in a plant sample crushing process is provided, wherein the dust collecting device is a flexible dust collecting bag.

[0013] According to a fume hood for preventing pollution in a plant sample crushing process provided by the utility model, a sealing ring is provided at the connection between the exhaust duct and the dust collecting device, and a cardboard cardboard is sleeved on the outer periphery of the interface where the exhaust duct connects to the dust collecting device.

[0014] According to a fume hood for preventing pollution during a plant sample crushing process provided by the utility model, the fan is embedded in the top plate of the box body, and the exhaust pipe is a corrugated hose.

[0015] According to a fume hood for preventing pollution during a plant sample crushing process provided by the utility model, a storage cavity is provided above the top plate of the box body, which is suitable for storing the exhaust pipe and the dust collecting device.

[0016] According to a fume hood for preventing pollution in a plant sample crushing process provided by the utility model, a wire inlet hole and an air inlet hole are arranged at the bottom of the rear plate of the box body, and a hole cover is detachably installed at one end of the wire inlet hole and the air inlet hole facing the outside of the box body.

[0017] According to a fume hood for preventing pollution in a plant sample crushing process provided by the utility model, the left side plate and the right side plate of the box body are symmetrically provided with handle rings.

[0018] According to a fume hood for preventing pollution in a plant sample crushing process provided by the utility model, a plurality of universal wheels and hidden grooves for accommodating the universal wheels are arranged on the lower surface of the bottom plate of the box body, a rotating shaft is installed in the hidden groove, a universal wheel bracket is mounted on the rotating shaft, and the universal wheel is installed on the universal wheel bracket.

[0019] The utility model provides a fume hood for preventing pollution in the process of plant sample crushing. The crushing process of experimental samples is carried out in the box, and the sample crushing work can be completed more conveniently and efficiently through the operating hole of the operating window. The dust generated by the crushing is sucked by the fan, and the dust enters the dust collecting device through the exhaust pipe for collection. The dust generated in the crushing process is finally collected in the dust collecting device, and the dust will not be discharged outside, thereby protecting the experimenters and the equipment and environment in the laboratory from the harm of the crushing dust. The structure is simple and light, and the practicability and portability of the device are enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 The utility model is a schematic diagram of the structure of a fume hood for preventing pollution in a plant sample crushing process.

[0022] Reference numerals:

[0023] 1. Box body; 2. Operation window; 21. Fixed window; 22. Sliding operation window; 3. Operation hole; 4. Fan; 5. Dust collection device; 6. Exhaust duct; 7. Wire inlet hole; 8. Air inlet hole; 9. Handle ring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are 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.

[0025] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0026] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood in specific circumstances.

[0027] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0029] Combine the following Figure 1 The utility model describes the specific structure and use process of a fume hood for preventing pollution during a plant sample crushing process.

[0030] One embodiment of the utility model provides a fume hood for preventing pollution during the crushing process of plant samples, see Figure 1 As shown, it includes a box body 1, a fan 4 and a dust collecting device 5, wherein the box body 1 is surrounded by a left panel, a right panel, a top panel, a bottom panel, a front panel and a rear panel, the front panel is a transparent operation window 2, and an operation hole 3 is provided on the operation window 2, and the operation window 2 is suitable for switching between an open state and a closed state to form the opening and closing of the box body 1; the fan 4 is arranged on the box body 1 and is connected with the internal space of the box body 1; the dust collecting device 5 is connected to the fan 4 through an exhaust duct 6.

[0031] It can be understood that, in the fume hood for preventing pollution during the crushing process of plant samples of the present embodiment, when the sample crushing operation is performed in the laboratory, the crusher can be placed in the box 1, and the sample crushing work can be completed more conveniently and efficiently through the operation hole of the operation window. Specifically, the operation window 2 is in an open state, and the crusher can be placed in the box 1 from the operation window 2 of the box 1, and then the operation window 2 is closed. The experimenter operates the crusher and the sample from the operation hole 3 on the operation window 2. During the sample crushing process, the fan 4 is turned on, and the crushed dust is sucked by the fan 4. The dust enters the dust collecting device 5 through the exhaust pipe 6 for collection. The dust generated during the crushing process is finally collected in the dust collecting device 5, and the dust will not be discharged, protecting the experimenter and the equipment and environment in the laboratory from the harm of the crushing dust.

[0032] In some specific examples, the top plate and front plate (operation window 2) of the box body 1 can be made of tempered glass, and the left plate, right plate, back plate and bottom plate can be made of stainless steel, and the box body 1 formed is 100 cm long, 60 cm wide and 100 cm high. The box body 1 is the main structure of the fume hood, which is simple and light. It should be understood that the existing fume hoods are generally desktop fume hoods, which have high requirements on the size, flatness and position of the table top, and the position of the exhaust duct, and have poor mobility, which greatly limits the operating area of ​​the experiment and reduces the work efficiency. Moreover, the fume hood has no dust collection device. Using this type of fume hood for crushing experiments will cause a large amount of dust generated during the experiment to pollute the atmospheric environment and become an allergen that endangers the health of humans and animals. The fume hood for anti-pollution in the process of crushing plant samples in this example has a simple and light structure, which enhances the practicality and mobility of the device, and the dust after crushing is finally collected by the dust collecting device 5, which will not harm human health and cause environmental pollution. While the crushing work is carried out efficiently and conveniently through the operating hole 3, it can effectively protect the experimenter, the environment and the equipment.

[0033] The operating window 2 of the utility model can be in the form of a traditional double-leaf door or door shaft, or can be other structures suitable for opening and closing, which are not particularly limited here. In some embodiments of the utility model, see again Figure 1 As shown, the operating window 2 includes a fixed window 21 and a sliding operating window 22, wherein the fixed window 21 is fixedly installed between the left and right panels of the box body 1; the sliding operating window 22 is slidably installed between the left and right panels of the box body 1, and is suitable for approaching or moving away from the fixed window 21 to realize the opening and closing of the box body 1; two operating holes 3 (with a diameter of 10 cm and a distance of 20 cm between the two holes) are symmetrically opened at the center position 50 cm away from the bottom edge of the sliding operating window 22.

[0034] It can be understood that the positions of the fixed window 21 and the sliding operation window 22 in this embodiment are not particularly limited, that is, the front plate (operation window 2) of the box body 1 is composed of a fixed fixed window 21 and a movable sliding operation window 22, and the fixed window 21 and the sliding operation window 22 can be Figure 1 The box body 1 can be arranged up and down or left and right, and the box body 1 can be opened and closed by sliding the operating window 22 toward or away from the fixed window 21.

[0035] In some specific examples, such as Figure 1 As shown, the fixed window 21 is located at the upper part between the left and right panels of the box body 1, and the sliding operation window 22 is located at the lower part between the left and right panels of the box body 1. The fixed window 21 and the sliding operation window 22 are both made of tempered glass and wrapped with aluminum frames at the edge. The aluminum frame of the fixed window 21 is fixed to the left and right panels of the box body 1. The left and right panels of the box body 1 are provided with relative slide grooves. The aluminum frame of the sliding operation window 22 is installed in the slide groove, so that the sliding operation window 22 can move up and down along the slide groove. A hole groove is provided at the lower part of the fixed window 21, and a locking shaft is provided on the sliding operation window 22, which is suitable for realizing the relative fixation of the sliding operation window 22 and the fixed window 21 through the cooperation of the locking shaft and the hole groove.

[0036] Specifically, the sliding operation window 22 and the fixed window 21 are staggered in the vertical direction. The sliding operation window 22 is located below the outer side of the fixed window 21 on the box body 1. The locking shaft on the sliding operation window 22 can be a movable pin shaft, which can be inserted and matched with the hole groove. When the sliding operation window 22 moves upward, the box body 1 is opened. When the locking shaft of the sliding operation window 22 moves to the hole groove position at the lower part of the fixed window 21 along with the sliding operation window 22, the locking shaft can be pushed inward into the hole groove. At this time, the sliding operation window 22 and the fixed window 21 are fixed by the locking shaft and the hole groove. The box body 1 is fully opened and the crusher can be placed. After the crusher is placed, the locking shaft and the hole groove are opened, the sliding operation window 22 is separated from the fixed window 21, and the sliding operation window 22 slides downward to close the box body 1. In order to facilitate the operation of the sliding operation window 22, a handle is provided at the bottom of the sliding operation window 22 to facilitate the movement of the sliding operation window 22 by the experimenter.

[0037] The utility model is used for the fume hood for preventing pollution during the crushing process of plant samples. During the crushing operation, the dust generated by the crushing is collected by the dust collecting device 5. The dust collecting device 5 can be a flexible dust collecting bag. The flexible dust collecting bag can expand with the intake air to collect more dust. When not in use, the flexible dust collecting bag is shrunken and does not take up space. In some examples, the flexible dust collecting bag of the dust collecting device 5 can be a double-layer thickened kraft paper material or a non-woven fabric material. The open dust collecting bag is 20cm long, 20cm wide, and 30cm high. The flexible dust collecting bag filters and collects dust. A sealing ring is provided at the connection between the exhaust pipe 6 and the dust collecting bag, and a cardboard cardboard is provided at the outer periphery of the interface where the exhaust pipe 6 is connected to the dust collecting bag. The sealing ring and the cardboard cardboard can enhance the sealing of the interface between the exhaust pipe 6 and the dust collecting bag to prevent dust leakage.

[0038] In other embodiments of the utility model of the fume hood for preventing pollution in the process of plant sample crushing, the top plate of the box body 1 is made of tempered glass, the fan 4 is embedded in the center of the top plate of the box body 1, and a centrifugal fan can be used. The exhaust pipe 6 is a corrugated hose with a diameter of 10 cm. The corrugated hose can be easily folded and moved to provide suction air and dust flow in any direction.

[0039] Furthermore, a storage cavity is provided above the top plate of the box body 1, which is suitable for storing the exhaust duct 6 and the dust collecting device 5. Specifically, the upper ends of the left side plate, the right side plate and the rear plate of the box body 1 can be set to be higher than the top plate. At this time, a storage cavity can be formed above the top plate by the left side plate, the right side plate and the rear plate. When the fume hood for preventing pollution in the plant sample crushing process of this embodiment is idle or moved, the exhaust duct 6 (corrugated hose) can be folded, and the dust collecting device 5 can also be placed in the storage cavity, which does not take up space and is convenient to move.

[0040] In some embodiments of the fume hood for preventing pollution during the crushing process of plant samples of the utility model, a wire inlet hole 7 and an air inlet hole 8 are provided at the bottom of the rear plate of the box body 1, and a hole cover is detachably installed at one end of the wire inlet hole 7 and the air inlet hole 8 facing the outside of the box body 1. When the crusher or other equipment is in the box body 1 and needs to be connected to the outside, the external connection of the line can be realized through the wire inlet hole 7. During the operation of the crusher, with the suction of the fan 4, a negative pressure will be formed in the box body 1, affecting the operation of the equipment. Opening the air inlet hole 8 to intake air can balance the pressure inside and outside the box body 1 and ensure the normal operation of the equipment. After use, the hole cover can be used to cover the wire inlet hole 7 and the air inlet hole 8 to ensure that no foreign matter or flying insects will enter the box body 1 through the wire inlet hole 7 and the air inlet hole 8 when the box body 1 is idle. In other embodiments, the rear plate of the box body 1 can only be provided with a wire inlet hole 7 without the air inlet hole 8. In addition to providing a threading channel, the wire inlet hole 7 also has an air intake function.

[0041] The utility model is a fume hood for preventing pollution in the process of crushing plant samples. It has a simple structure and is light and easy to move. In some examples, handle rings 9 are symmetrically arranged at the center of the left and right panels 50 cm from the bottom. The two handle rings 9 facilitate the easy movement of the box 1 by hand. Furthermore, a plurality of universal wheels and a hidden groove for accommodating the universal wheels are arranged on the lower surface of the bottom plate of the box 1. A rotating shaft is installed in the hidden groove. A universal wheel bracket is mounted on the rotating shaft, and the universal wheel is installed on the universal wheel bracket. When the fume hood is in the working process, the universal wheel can be rotated and hidden in the hidden groove to keep the lower surface of the bottom plate smooth. When the box 1 needs to be moved, the rotating shaft in the hidden groove is rotated so that the universal wheel is turned out from the hidden groove to support the box 1 for movement.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A fume hood for preventing pollution during the crushing of plant samples, characterized in that: include: The box body (1) is formed by a left side plate, a right side plate, a top plate, a bottom plate, a front plate and a rear plate, the front plate being a transparent operating window (2), the operating window (2) being provided with an operating hole (3), the operating window (2) being suitable for switching between an open state and a closed state, so as to open and close the box body (1); A fan (4) is arranged on the box (1) and is connected to the internal space of the box (1); A dust collecting device (5), wherein the dust collecting device (5) is connected to the fan (4) via an exhaust pipe (6), and the dust collecting device (5) is a flexible dust collecting bag made of non-woven fabric, which expands with the intake of air to collect dust, and the flexible dust collecting bag is deflated when not in use.

2. The fume hood for preventing pollution during the crushing of plant samples according to claim 1, characterized in that: The operating window (2) comprises: A fixed window (21) is fixedly installed between the left side plate and the right side plate of the box body (1); A sliding operation window (22) is slidably mounted between the left side plate and the right side plate of the box body (1), and is suitable for approaching and moving away from the fixed window (21) to realize opening and closing of the box body (1); two operating holes (3) are symmetrically arranged on the sliding operation window (22).

3. The fume hood for preventing pollution during the crushing of plant samples according to claim 2, characterized in that: The fixed window (21) is located at the upper part between the left side plate and the right side plate of the box body (1); a hole groove is provided at the lower part of the fixed window (21); a locking shaft is provided on the sliding operation window (22), which is suitable for achieving relative fixation of the sliding operation window (22) and the fixed window (21) through the cooperation of the locking shaft and the hole groove; and a handle is also provided on the sliding operation window (22).

4. The fume hood for preventing pollution during the crushing of plant samples according to claim 1, characterized in that: A sealing ring is provided at the connection between the exhaust pipe (6) and the dust collecting device (5), and a cardboard cardboard is sleeved on the outer periphery of the interface where the exhaust pipe (6) is connected to the dust collecting device (5).

5. The fume hood for preventing pollution during the plant sample crushing process according to claim 1, characterized in that: The fan (4) is embedded in the top plate of the box body (1), and the exhaust pipe (6) is a corrugated hose.

6. The fume hood for preventing pollution during the crushing of plant samples according to claim 5, characterized in that: A storage cavity is provided above the top plate of the box body (1), which is suitable for storing the exhaust pipe (6) and the dust collecting device (5).

7. The fume hood for preventing pollution during the crushing of plant samples according to any one of claims 1 to 6, characterized in that: A wire inlet hole (7) and an air inlet hole (8) are provided at the bottom of the rear plate of the box body (1), and a hole cover is detachably installed at one end of the wire inlet hole (7) and the air inlet hole (8) facing the outside of the box body (1).

8. The fume hood for preventing pollution during the crushing of plant samples according to any one of claims 1 to 6, characterized in that: The left side plate and the right side plate of the box body (1) are symmetrically provided with handle rings (9).

9. The fume hood for preventing pollution during the crushing of plant samples according to any one of claims 1 to 6, characterized in that: The lower surface of the bottom plate of the box body (1) is provided with a plurality of universal wheels and a hidden groove for accommodating the universal wheels, a rotating shaft is installed in the hidden groove, a universal wheel bracket is mounted on the rotating shaft, and the universal wheel is installed on the universal wheel bracket.

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