Radiation-proof negative pressure glove box

Abstract

The utility model relates to glove box technical field discloses a kind of anti-radiation negative pressure glove box, including glove box main body, box seat and first purification group, the glove box main body bottom is fixedly connected at the box seat top, the first purification group is located in the box seat inside, the first purification group includes prefiltering box, adsorption tank and anti-radiation filter box, the adsorption tank top is equipped with heating tank, the adsorption tank top integrally connected with ventilation pipe, the ventilation pipe top is fixedly connected in the heating tank bottom, the utility model is closed by control valve and air supply pipe, and then the second T-shaped pipe at the bottom of adsorption tank is closed, so that the inside of adsorption tank is closed, start heating tank, fan and heater run, fan runs and generates suction, external air is sucked into heating tank to form wind body, wind body passes through heater and drives heat to enter adsorption tank through ventilation pipe, and active carbon layer is dried.

Description

Technical Field

[0001] This utility model relates to the field of glove box technology, and in particular to a radiation-proof negative pressure glove box. Background Technology

[0002] A radiation-proof negative pressure glove box is a high-safety experimental device specifically designed for handling radioactive materials. It is primarily used in nuclear research, nuclear medicine, and nuclear waste disposal. The glove box uses special shielding materials (such as lead plates, lead glass windows, and tungsten gloves) to block the penetration of radioactive rays, ensuring that operators are protected from radiation damage. Its shielding performance keeps radiation doses within safe limits, making it particularly suitable for handling highly radioactive materials. The negative pressure glove box maintains a negative pressure state inside the box to prevent radioactive materials from leaking into the external environment.

[0003] An existing radiation-proof safety glove box (notification number: CN212553932U) has at least the following drawbacks: Radiation-proof glove boxes often handle radioactive materials, which may be accompanied by the release of volatile chemical substances. These substances are easily adsorbed on purification materials (such as activated carbon or molecular sieves), reducing the adsorption efficiency of the purification materials. If the activated carbon is not replaced in time, it is easy to cause the water oxygen content to exceed the standard. Moreover, frequent replacement of purification materials can easily lead to increased experimental costs. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a radiation-proof negative pressure glove box.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A radiation-proof negative pressure glove box includes a glove box body, a box base, and a first purification group. The bottom of the glove box body is fixedly connected to the top of the box base. The first purification group is located inside the box base and includes a pre-filter box, an adsorption box, and a radiation-proof filter box. A heating box is provided on the top of the adsorption box. A ventilation pipe is integrally connected to the top of the adsorption box. The top of the ventilation pipe is fixedly connected to the bottom of the heating box. A heater is fixedly connected inside the heating box. A fan is provided on the top of the heater and is fixedly installed on the heating box. Several air inlets are provided through the top of the heating box. A dustproof net is provided on the top of the air inlets and is fixedly connected to the top of the heating box by bolts. An activated carbon layer is provided at the bottom of the ventilation pipe and is located inside the adsorption box.

[0007] As a further embodiment of this utility model, a perforated plate is fixedly connected to the bottom of the inner wall of the adsorption box. The perforated plate divides the internal space of the adsorption box into an adsorption chamber and a drainage chamber. The activated carbon layer is placed on the top of the perforated plate. An air supply pipe and an air inlet pipe are fixedly connected to the outer sides of the adsorption box, respectively. Control valves are fixedly connected to the outside of the air inlet pipe, the air supply pipe, and the ventilation pipe.

[0008] As a further embodiment of this utility model, the end of the air inlet pipe away from the adsorption box is fixedly connected to one side of the pre-filter box, and one end of the air supply pipe is fixedly connected to the side of the radiation-proof filter box. A second purification group is provided on one side of the radiation-proof filter box. The second purification group is located on the back side of the first purification group. The structure of the second purification group is the same as that of the first purification group. A second T-shaped pipe is provided at the bottom of the adsorption box.

[0009] As a further embodiment of this utility model, one end of the second T-shaped tube has two pipe sections fixedly connected to the bottom of the adsorption boxes of the first purification group and the second purification group, respectively. One end of the second T-shaped tube is connected through to one side of the box base. A third T-shaped tube is provided on one side of the second purification group. The two pipe sections at the bottom of the third T-shaped tube are fixedly connected to one side of the radiation-proof filter box of the second purification group and the first purification group, respectively.

[0010] As a further embodiment of this utility model, a first T-shaped tube is provided on the side of the second purification group away from the third T-shaped tube. The two bottom ends of the first T-shaped tube are respectively fixedly connected to one side of the pre-filtration box of the first purification group and the second purification group. An electric control valve is fixedly connected to the outside of the pipes of the third T-shaped tube, the second T-shaped tube and the first T-shaped tube near the first purification group and the second purification group. Several bases are provided inside the box base, and the adsorption boxes of the first purification group and the second purification group are located on the top of the base.

[0011] As a further embodiment of this utility model, a box door is fixedly installed on both the front and rear sides of the box base, and several universal wheels are fixedly connected to the bottom of the box base. A glove box body is provided between the first T-shaped tube and the third T-shaped tube. An exhaust assembly is connected inside the top of the glove box body. The top pipes of the first T-shaped tube and the third T-shaped tube pass through the glove box body and are fixedly connected to both sides of the exhaust assembly.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. When the adsorption efficiency of the activated carbon layer inside the adsorption box decreases, the operator activates the control valve to close the air supply pipe and the air supply duct, and then closes the second T-shaped pipe at the bottom of the adsorption box to seal the inside of the adsorption box. The heating box is then activated, and the fan and heater operate. The fan generates suction, drawing outside air into the heating box to form a wind. The wind passes through the heater, carrying heat through the ventilation pipe into the adsorption box to dry the activated carbon layer. This prevents the water and oxygen content of the activated carbon layer from exceeding the standard, thus reducing the adsorption effect. It also avoids frequent replacement of the activated carbon layer, which would affect the purification of radioactive gases inside the glove box.

[0014] 2. When the filter media load of the first purification group is large, the operator closes the pipes connecting the first T-tube, the second T-tube and the third T-tube to the first purification group through the electric control valve, and at the same time opens the corresponding pipes of the second purification group, so that the first purification group and the second purification group can operate alternately. This allows the first purification group to stop operating and dry the activated carbon layer inside, and avoids affecting the use of the glove box body when replacing the filter media. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a radiation-proof negative pressure glove box proposed in this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of a radiation-proof negative pressure glove box proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the first purification unit of a radiation-proof negative pressure glove box proposed in this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the first purification unit of a radiation-proof negative pressure glove box proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the adsorption box structure of a radiation-proof negative pressure glove box proposed in this utility model.

[0020] In the diagram: 1. Glove box body; 101. Exhaust assembly; 2. First T-tube; 3. Box base; 301. Box door; 302. Base; 303. Casters; 4. First purification group; 401. Pre-filter box; 402. Air inlet duct; 403. Adsorption box; 4031. Heating box; 4032. Dustproof net; 4033. Fan; 4034. Heater; 4035. Ventilation duct; 4036. Activated carbon layer; 4037. Strain plate; 4038. Drain chamber; 404. Air supply duct; 405. Control valve; 406. Radiation-proof filter box; 5. Second purification group; 6. Second T-tube; 7. Third T-tube; 8. Electrically controlled valve. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figures 1-5 A radiation-proof negative pressure glove box includes a glove box body 1, a box base 3, and a first purification group 4. The bottom of the glove box body 1 is fixedly connected to the top of the box base 3. The first purification group 4 is located inside the box base 3 and includes a pre-filter box 401, an adsorption box 403, and a radiation-proof filter box 406. A heating box 4031 is provided on the top of the adsorption box 403. A ventilation pipe 4035 is integrally connected to the top of the adsorption box 403, and the top of the ventilation pipe 4035 is fixedly connected to the bottom of the heating box 4031. A heater 4034 is fixedly connected inside the heating box 4031. A fan 4033 is provided on the top of the heater 4034. The fan 4033 is fixedly installed on the heating box 4031. Several air inlets are opened through the top of the heating box 4031. A dustproof net 4032 is provided on the top of the air inlet. The dustproof net 4032 is fixedly connected to the top of the heating box 4031 by bolts. An activated carbon layer 4036 is provided at the bottom of the ventilation pipe 4035. The activated carbon layer 4036 is located inside the adsorption box 403.

[0025] During use, when the adsorption efficiency of the activated carbon layer 4036 inside the adsorption box 403 decreases, the operator activates the control valve 405 to close the air supply pipe 404 and then closes the second T-shaped pipe 6 at the bottom of the adsorption box 403, making the inside of the adsorption box 403 sealed. The heating box 4031 is then activated, and the fan 4033 and heater 4034 operate. The fan 4033 generates suction, drawing outside air into the heating box 4031 to form a wind. The wind passes through the heater 4034, carrying heat through the ventilation pipe 4035 into the adsorption box 403 to dry the activated carbon layer 4036, preventing the water and oxygen content of the activated carbon layer 4036 from exceeding the standard and thus reducing the adsorption effect. At the same time, it avoids frequent replacement of the activated carbon layer 4036, which would affect the purification of radioactive gases inside the glove box body 1.

[0026] In this embodiment, a perforated plate 4037 is fixedly connected to the bottom of the inner wall of the adsorption box 403. The perforated plate 4037 divides the internal space of the adsorption box 403 into an adsorption chamber and a drainage chamber 4038. An activated carbon layer 4036 is placed on the top of the perforated plate 4037. An air supply pipe 404 and an air inlet pipe 402 are fixedly connected to the outer sides of the adsorption box 403, respectively. A control valve 405 is fixedly connected to the outside of the air inlet pipe 402, the air supply pipe 404, and the ventilation pipe 4035.

[0027] In use, the radioactive gas inside the glove box body 1 is transported to the first purification group 4 through the first T-tube 2 via the exhaust assembly 101. The pre-filter box 401 is equipped with a pre-filter layer to remove large particulate impurities such as dust or aerosols inside the gas, thus protecting the subsequent purification components.

[0028] In this embodiment, the end of the air inlet pipe 402 away from the adsorption box 403 is fixedly connected to one side of the pre-filter box 401, and one end of the air supply pipe 404 is fixedly connected to the side of the radiation shielding filter box 406. A second purification group 5 is provided on one side of the radiation shielding filter box 406. The second purification group 5 is located on the back side of the first purification group 4. The structure of the second purification group 5 is the same as that of the first purification group 4. A second T-shaped pipe 6 is provided at the bottom of the adsorption box 403.

[0029] When in use, when the filter media load of the first purification group 4 is large, the operator closes the pipes connecting the first T-tube 2, the second T-tube 6 and the third T-tube 7 to the first purification group 4 through the electric control valve 8, and at the same time opens the corresponding pipes of the second purification group 5, so that the first purification group 4 and the second purification group 5 operate alternately. This allows the first purification group 4 to stop operating and dry the activated carbon layer 4036 inside, and avoids affecting the use of the glove box body 1 when the filter media is replaced.

[0030] In this embodiment, one end of the second T-shaped tube 6 has two pipe sections that are fixedly connected to the bottom of the adsorption box 403 of the first purification group 4 and the second purification group 5, respectively. One end of the second T-shaped tube 6 is connected through to one side of the box base 3. A third T-shaped tube 7 is provided on one side of the second purification group 5. The two pipe sections at the bottom of the third T-shaped tube 7 are fixedly connected to one side of the radiation-proof filter box 406 of the second purification group 5 and the first purification group 4, respectively.

[0031] In use, the gas enters the adsorption box 403 through the air inlet pipe 402. The activated carbon inside the adsorption box 403 removes moisture and volatile organic compounds from the gas. When the activated carbon is full of water, the excess water sinks and enters the drain chamber 4038 through the drain plate 4037. It waits for the second T-shaped pipe 6 to open and discharge the gas from the adsorption box 403. The gas then enters the radiation-proof filter box 406 through the air supply pipe 404. The radiation-proof filter box 406 is equipped with special adsorption materials to filter and degrade radioactive gases and prevent radiation leakage. After purification, the gas is discharged into the glove box body 1 through the third T-shaped pipe 7 to circulate and purify the radioactive gases inside the glove box body 1.

[0032] In this embodiment, a first T-tube 2 is provided on the side of the second purification group 5 away from the third T-tube 7. The two bottom ends of the first T-tube 2 are respectively fixedly connected to the side of the pre-filter box 401 of the first purification group 4 and the second purification group 5. An electric control valve 8 is fixedly connected to the outside of the section of the pipe of the third T-tube 7, the second T-tube 6 and the first T-tube 2 near the first purification group 4 and the second purification group 5. Several bases 302 are provided inside the box base 3. The adsorption boxes 403 of the first purification group 4 and the second purification group 5 are both located on the top of the base 302.

[0033] When in use, the staff pushes the glove box body 1, and the casters 303 move under the force, which drives the overall structure of the glove box body 1 to move, making it easy for the glove box body 1 to move. The box base 3 is equipped with boxes 301 on the front and rear sides, which makes it easy for the staff to open the boxes 301 to replace the filter media and perform maintenance and testing on the first purification group 4 and the second purification group 5.

[0034] In this embodiment, a box door 301 is fixedly installed on both the front and rear sides of the box base 3. Several universal wheels 303 are fixedly connected to the bottom of the box base 3. A glove box body 1 is provided between the first T-shaped tube 2 and the third T-shaped tube 7. An exhaust assembly 101 is connected inside the top of the glove box body 1. The top pipes of the first T-shaped tube 2 and the third T-shaped tube 7 pass through the glove box body 1 and are fixedly connected to both sides of the exhaust assembly 101.

[0035] In use, the exhaust port of the exhaust assembly 101 is located at the top inside the glove box body 1, and the air inlet of the exhaust assembly 101 is located on one side of the inner wall of the glove box body 1. The pipes of the first T-shaped pipe 2 and the second T-shaped pipe 6 are respectively connected to the air inlet and exhaust port of the exhaust assembly 101, which facilitates the extraction and discharge of gas inside the glove box and makes the gas inside the glove box circulate and purify.

[0036] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: When the adsorption efficiency of the activated carbon layer 4036 inside the adsorption box 403 decreases, the operator activates the control valve 405 to close the air supply pipe 404 and the air supply pipe 404, and then closes the second T-shaped pipe 6 at the bottom of the adsorption box 403, so that the inside of the adsorption box 403 is sealed. The heating box 4031 is activated, and the fan 4033 and the heater 4034 operate. The fan 4033 generates suction, drawing outside air into the heating box 4031 to form a wind body. The wind body passes through the heater 4034, carrying heat through the ventilation pipe 4035 into the adsorption box 403, which in turn affects the activated carbon. The activated carbon layer 4036 is dried to prevent the water and oxygen content of the activated carbon layer 4036 from exceeding the standard, which would reduce the adsorption effect. At the same time, it avoids frequent replacement of the activated carbon layer 4036, which would affect the purification of radioactive gases inside the glove box body 1. When the filter material load of the first purification group 4 is high, the operator closes the pipes connecting the first T-tube 2, the second T-tube 6 and the third T-tube 7 to the first purification group 4 through the electric control valve 8, and at the same time opens the corresponding pipes of the second purification group 5, so that the first purification group 4 and the second purification group 5 operate alternately. This allows the first purification group 4 to stop operating and dry the activated carbon layer 4036 inside, and avoids affecting the use of the glove box body 1 when replacing the filter material.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A radiation-proof negative pressure glove box, comprising a glove box body (1), a box base (3), and a first purification unit (4), characterized in that, The glove box body (1) is fixedly connected to the top of the box base (3) at the bottom. The first purification group (4) is located inside the box base (3). The first purification group (4) includes a pre-filter box (401), an adsorption box (403), and a radiation-proof filter box (406). A heating box (4031) is provided on the top of the adsorption box (403). A ventilation pipe (4035) is integrally connected to the top of the adsorption box (403). The top of the ventilation pipe (4035) is fixedly connected to the bottom of the heating box (4031). The heating box (4031) is fixedly connected inside. There is a heater (4034), and a fan (4033) is provided on the top of the heater (4034). The fan (4033) is fixedly installed on the heating box (4031). Several air inlets are provided through the top of the heating box (4031). A dustproof net (4032) is provided on the top of the air inlet. The dustproof net (4032) is fixedly connected to the top of the heating box (4031) by bolts. An activated carbon layer (4036) is provided at the bottom of the ventilation pipe (4035). The activated carbon layer (4036) is located inside the adsorption box (403).

2. The anti-radiation negative pressure glove box according to claim 1, characterized in that, A perforated plate (4037) is fixedly connected to the bottom of the inner wall of the adsorption box (403). The perforated plate (4037) divides the internal space of the adsorption box (403) into an adsorption chamber and a drainage chamber (4038). The activated carbon layer (4036) is placed on the top of the perforated plate (4037). An air supply pipe (404) and an air inlet pipe (402) are fixedly connected to the outer sides of the adsorption box (403) respectively. A control valve (405) is fixedly connected to the outside of the air inlet pipe (402), the air supply pipe (404), and the ventilation pipe (4035).

3. The anti-radiation negative pressure glove box according to claim 2, characterized in that, The end of the air inlet pipe (402) away from the adsorption box (403) is fixedly connected to the side of the pre-filter box (401), and the end of the air supply pipe (404) is fixedly connected to the side of the radiation shielding filter box (406). A second purification group (5) is provided on one side of the radiation shielding filter box (406). The second purification group (5) is located on the back side of the first purification group (4). The structure of the second purification group (5) is the same as that of the first purification group (4). A second T-shaped pipe (6) is provided at the bottom of the adsorption box (403).

4. The anti-radiation negative pressure glove box according to claim 3, characterized in that, The two sections of the second T-tube (6) are fixedly connected to the bottom of the adsorption box (403) of the first purification group (4) and the second purification group (5), respectively. One end of the second T-tube (6) is connected to one side of the box base (3). A third T-tube (7) is provided on one side of the second purification group (5). The two sections of the bottom end of the third T-tube (7) are fixedly connected to one side of the radiation-proof filter box (406) of the second purification group (5) and the first purification group (4), respectively.

5. A radiation-proof negative pressure glove box according to claim 4, characterized in that, The second purification group (5) has a first T-tube (2) on the side away from the third T-tube (7). The two bottom ends of the first T-tube (2) are fixedly connected to the pre-filter box (401) of the first purification group (4) and the second purification group (5). The third T-tube (7), the second T-tube (6) and the first T-tube (2) are all fixedly connected to an electric control valve (8) on the outside of a section of pipe close to the first purification group (4) and the second purification group (5). The box base (3) has several bases (302) inside. The adsorption boxes (403) of the first purification group (4) and the second purification group (5) are located on the top of the base (302).

6. The anti-radiation negative pressure glove box according to claim 5, characterized in that, The box base (3) is fixedly installed with box doors (301) on both the front and rear sides. Several universal wheels (303) are fixedly connected to the bottom of the box base (3). A glove box body (1) is provided between the first T-shaped tube (2) and the third T-shaped tube (7). An exhaust assembly (101) is connected inside the top of the glove box body (1). The top pipes of the first T-shaped tube (2) and the third T-shaped tube (7) pass through the glove box body (1) and are fixedly connected to both sides of the exhaust assembly (101).

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