Non-pipe ventilation cabinet facilitating safe transfer of waste

Abstract

The utility model discloses a pipe-free ventilation cabinet convenient for waste safe transfer, which comprises a cabinet body, a gas purification device and a waste transfer device, the cabinet body comprises a base and an experiment box body, one side of the experiment box body is provided with protective glass, the other side of the experiment box body is provided with a waste transfer port, the gas purification device comprises a wiring frame and a filter frame, and the waste transfer port is provided with a waste discharge port. A first filter is arranged at the bottom of the filtering frame, a fan and a gas sensor are arranged in the middle of the filtering frame, a second filter is arranged at the top of the filtering frame, the waste transferring device comprises a sealing box and a feeding pipe, one end of the feeding pipe extends into the sealing box, and a waste bag is fixed to an end opening of the feeding pipe through a hoop. The non-pipe ventilation cabinet facilitating safe waste transfer is advanced in design, compact in structure, convenient to use and reliable in operation, harmful gas is effectively prevented from being volatilized into a laboratory, the working environment is improved, and the safety of workers is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of fume hoods, and in particular relates to a ductless fume hood which is convenient for safe transfer of wastes. Background Art

[0002] In order to prevent laboratory workers from inhaling or swallowing some toxic, pathogenic or unknown toxic chemicals and organisms, the laboratory should have good ventilation. Fume hoods are an indispensable part of laboratory ventilation design. Fume hoods are fully functional and tightly protected. They not only provide comprehensive protection for operators, but also withstand the corrosion of various chemical acids, alkalis and organic reagents, and do not contaminate the internal experimental samples. It ensures the smooth discharge of toxic, harmful and odorous gases, so that the experimental environment can achieve the safety effect specified by national standards. Traditional fume hoods use forced exhaust and ducts to discharge toxic gases outdoors, but the installation of ducts is large and will limit the location of the fume hood. In addition, the direct discharge of toxic and harmful gases without treatment will also pollute the environment. Therefore, ductless fume hoods that can treat exhaust gas and return the treated clean air to the room are widely used.

[0003] The current ductless fume hoods still have some areas that need improvement. For example, the waste generated in the experiment needs to be taken out of the cabinet before it can be put into the designated waste bin. Although the above operation takes a short time, some harmful gases will still evaporate into the laboratory. In the long run, the experimental environment will not meet the safety standards and endanger the safety of the operators. Therefore, it is urgent to design a ductless fume hood that is convenient for the safe transfer of waste to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a ductless fume hood which is convenient for the safe transfer of wastes, so as to solve the problems existing in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a ductless fume hood for facilitating safe transfer of waste, comprising:

[0006] A cabinet, the cabinet comprising a base and an experimental box fixed on the top of the base, one side of the experimental box is provided with a protective glass and the other side is provided with a waste transfer port;

[0007] A gas purification device, the gas purification device comprises a wiring rack fixed on the top of the experimental box and a filter rack fixed on the top of the wiring rack, a start switch and an alarm are provided on one side of the wiring rack, and a function panel is provided on the other side, a first filter is provided at the bottom of the filter rack, a fan and a gas sensor are provided in the middle of the filter rack, and a second filter is provided on the top of the filter rack;

[0008] A waste transfer device, the waste transfer device includes a sealed box fixedly sleeved on the outside of a waste transfer port and a feeding pipe nested in the waste transfer port, one end of the feeding pipe is fixedly connected to the experimental box through a flange, the other end of the feeding pipe extends into the sealed box, and a waste bag is fixed at the port through a clamp.

[0009] Furthermore, matching openings are provided at the top of the experimental box and at the center of the wiring rack and the filter rack.

[0010] Furthermore, universal wheels are fixed at the four corners of the bottom of the base, a waste water bucket connected to the experimental box is provided inside the base, and a plurality of sockets are provided on one side of the base.

[0011] Furthermore, there are three protective glasses in total, which are arranged from top to bottom, and two adjacent protective glasses are connected by a number of hinges. A surface wind speed sensor is provided on the top protective glass, and an operating port and a bayonet are provided on the bottom protective glass.

[0012] Furthermore, hooks matching the bayonet are fixed at two ends of one side of the wiring frame.

[0013] Furthermore, the cross-sectional dimensions of the first filter, the second filter and the filter frame are the same, and both the first filter and the second filter are activated carbon filters.

[0014] Furthermore, the top plate of the sealed box is hinged to the side plates, and a handle is fixed on the top of the sealed box.

[0015] The technical effects and advantages of the utility model are as follows: the ductless fume hood which is convenient for the safe transfer of waste is advanced in design, compact in structure, easy to use and reliable in operation. By arranging a waste transfer port, a sealing box, a feeding pipe and a waste bag, it is convenient to put the waste generated during the experiment from the experimental box directly into the waste bag in the sealed box. The sealed box is under negative pressure, and the waste gas generated by the waste can first enter the experimental box and then be filtered through the purification device. When the waste bag needs to be replaced, the bag mouth of the waste bag is tied tightly in the sealed box and taken out, which effectively avoids the volatilization of harmful gases into the laboratory, is beneficial to improving the working environment and ensuring the safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model in the vertical direction;

[0018] Figure 3 It is a vertical cross-sectional view of the filter frame of the utility model.

[0019] In the figure: 100, cabinet; 101, base; 102, experimental box; 103, universal wheel; 104, waste water bucket; 105, socket; 106, protective glass; 107, hinge; 108, operation port; 109, surface wind speed sensor; 110, bayonet; 111, waste transfer port; 200, air purification device; 201, wiring rack; 202, filter rack; 203, start switch; 204, alarm; 205, function panel; 206, first filter; 207, fan; 208, gas sensor; 209, second filter; 210, hook; 300, waste transfer device; 301, sealing box; 302, feeding pipe; 303, flange; 304, clamp; 305, waste bag; 306, handle. DETAILED DESCRIPTION

[0020] 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 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.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The utility model provides Figure 1-3 A ductless fume hood for safe waste transfer shown in FIG. 1 includes:

[0024] The cabinet 100 includes a base 101 and an experimental box 102 fixed on the top of the base 101, a protective glass 106 is provided on one side of the experimental box 102 and a waste transfer port 111 is provided on the other side;

[0025] The air purification device 200 includes a wiring rack 201 fixed on the top of the experimental box 102 and a filter rack 202 fixed on the top of the wiring rack 201. A start switch 203 and an alarm 204 are provided on one side of the wiring rack 201, and a function panel 205 is provided on the other side. A first filter 206 is provided at the bottom of the filter rack 202, a fan 207 and a gas sensor 208 are provided in the middle of the filter rack 202, and a second filter 209 is provided on the top of the filter rack 202;

[0026] The waste transfer device 300 includes a sealed box 301 fixedly sleeved on the outside of the waste transfer port 111 and a feed pipe 302 nested in the waste transfer port 111. One end of the feed pipe 302 is fixedly connected to the experimental box 102 through a flange 303, and the other end of the feed pipe 302 extends into the sealed box 301, and a waste bag 305 is fixed at the port through a clamp 304.

[0027] In addition, matching openings are provided at the top of the experimental box 102 and the center of the wiring rack 201 and the filter rack 202, ensuring that the fan 207 can suck the air in the experimental box 102 into the purification device 200, purify the harmful gas in the experimental box 102 and discharge it, and at the same time, form a negative pressure in the experimental box 102 to prevent harmful gas from escaping from the operation port 108.

[0028] Specifically, universal wheels 103 are fixed at the four corners of the bottom of the base 101 to facilitate the movement of the cabinet 100. A waste water bucket 104 connected to the experimental box 102 is provided inside the base 101 to facilitate the collection of waste water generated in the experiment. Several sockets 105 are provided on one side of the base 101 to facilitate the connection of external electrical appliances.

[0029] It is worth mentioning that there are three protective glasses 106 in total, which are arranged from top to bottom, and two adjacent protective glasses 106 are connected by a number of hinges 107, which is convenient for observing the interior of the experimental box 102 through the protective glass 106, thereby facilitating the experiment, and can block one side of the experimental box 102 to prevent harmful gases from escaping. A surface wind speed sensor 109 is provided on the protective glass 106 at the top, which is convenient for monitoring the flow speed of air entering the experimental box 102 to ensure that the wind speed is in a reasonable range of 0.4 to 0.6 m / s. An operating port 108 and a bayonet 110 are provided on the protective glass 106 at the bottom, so that the experimenter can conveniently put his hands into the experimental box 102 through the operating port 108 to perform experimental operations.

[0030] Specifically, hooks 210 matching the bayonet 110 are fixed at both ends of one side of the wiring rack 201. When the experimental box 102 needs to be cleaned, the bottom protective glass 106 is buckled onto the hooks 210 through the bayonet 110 for easy cleaning.

[0031] It should be noted that the cross-sectional dimensions of the first filter 206, the second filter 209 and the filter rack 202 are the same, ensuring that the gas in the experimental box 102 can pass through the first filter 206 and the second filter 209 when it moves upward through the filter rack 202, and can effectively filter the exhausted gas. The first filter 206 and the second filter 209 both use activated carbon filters, and the filtering effect is good.

[0032] Specifically, the top plate of the sealed box 301 is hinged to the side plate, and a handle 306 is fixed on the top of the sealed box 301, so that the top plate of the sealed box 301 can be opened conveniently through the handle 306, thereby facilitating the replacement of the waste bag 305.

[0033] Working principle: When using the ductless fume hood which is convenient for the safe transfer of waste, first turn on the start switch 203, the fan 207 starts to run, and the fan 207 draws out the air in the experimental box 102, so that a negative pressure is formed in the experimental box 102, and then the staff puts both hands into the experimental box 102 through the operation port 108 to perform experimental operations, and the waste liquid generated in the experiment enters the waste water bucket 104 through the sealing tube, and the waste generated in the experiment is put into the waste bag 305 through the feeding pipe 302, and the waste gas generated in the experiment enters the first filter 206 and the second filter 209 through the fan 207. The ductless fume hood for facilitating safe transfer of waste has an advanced design, compact structure, easy use and reliable operation. By arranging a waste transfer port 111, a sealed box 301, a feeding pipe 302 and a waste bag 305, it is convenient to put the waste generated during the experiment from the experimental box 102 directly into the waste bag 305 in the sealed box 301. The sealed box 301 is under negative pressure, and the waste gas generated by the waste can first enter the experimental box 102 and then be filtered by the purification device 200. When the waste bag 305 needs to be replaced, the bag mouth of the waste bag 305 is tied up and taken out in the sealed box 301, which effectively prevents the volatilization of harmful gases into the laboratory, is beneficial to improving the working environment and ensuring the safety of the staff.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A ductless fume hood for facilitating safe transfer of waste, characterized in that: include: A cabinet (100), the cabinet (100) comprising a base (101) and an experimental box (102) fixed on the top of the base (101), a protective glass (106) being provided on one side of the experimental box (102) and a waste transfer port (111) being provided on the other side; A gas purification device (200), the gas purification device (200) comprising a wiring rack (201) fixed on the top of an experimental box (102) and a filter rack (202) fixed on the top of the wiring rack (201), a start switch (203) and an alarm (204) being provided on one side of the wiring rack (201), and a function panel (205) being provided on the other side, a first filter (206) being provided at the bottom of the filter rack (202), a fan (207) and a gas sensor (208) being provided in the middle of the filter rack (202), and a second filter (209) being provided at the top of the filter rack (202); A waste transfer device (300), the waste transfer device (300) comprising a sealed box (301) fixedly sleeved on the outside of a waste transfer port (111) and a feed pipe (302) nested in the waste transfer port (111), one end of the feed pipe (302) being fixedly connected to the experimental box (102) via a flange (303), the other end of the feed pipe (302) extending into the sealed box (301), and a waste bag (305) being fixed at the port via a clamp (304).

2. The ductless fume hood for facilitating safe transfer of waste according to claim 1, characterized in that: Matching openings are provided at the top of the experimental box (102) and at the center of the wiring rack (201) and the filter rack (202).

3. The ductless fume hood for facilitating safe transfer of waste according to claim 1, characterized in that: Universal wheels (103) are fixed at the four corners of the bottom of the base (101), a waste water bucket (104) connected to the experimental box (102) is provided inside the base (101), and a plurality of sockets (105) are provided on one side of the base (101).

4. The ductless fume hood for facilitating safe transfer of waste according to claim 1, characterized in that: There are three pieces of protective glass (106) in total. The three pieces of protective glass (106) are arranged from top to bottom, and two adjacent pieces of protective glass (106) are connected via a plurality of hinges (107). A surface wind speed sensor (109) is provided on the protective glass (106) at the top, and an operating port (108) and a bayonet (110) are provided on the protective glass (106) at the bottom.

5. The ductless fume hood for facilitating safe transfer of waste according to claim 1, characterized in that: Hooks (210) matching the bayonet (110) are fixed at two ends of one side of the wiring frame (201).

6. The ductless fume hood for facilitating safe transfer of waste according to claim 1, characterized in that: The cross-sectional dimensions of the first filter (206), the second filter (209) and the filter frame (202) are the same, and both the first filter (206) and the second filter (209) are activated carbon filters.

7. The ductless fume hood for facilitating safe transfer of waste according to claim 1, characterized in that: The top plate of the sealed box (301) is hinged to the side plates, and a handle (306) is fixed to the top of the sealed box (301).

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