CN218447247U - Drainage discharge assembly, radioactive substance-containing waste liquid collecting device and hot chamber - Google Patents

Abstract

The utility model discloses a solve the problem that has unrestrained risk when waste liquid emptys among the prior art, disclose a drainage emission subassembly, contain radioactive substance's waste liquid collection device and hot chamber. The drainage discharge assembly comprises a receiving cylinder, a sealing cover, a conical drainage funnel, a rubber plug and a drainage tube. The drainage funnel is positioned on the inner side of the receiving cylinder; the outer diameter of the drainage tube is consistent with the diameter of the narrow end of the drainage funnel; one end part of the drainage tube vertically penetrates through the bottom of the receiving cylinder and is connected and communicated with the narrow end of the drainage tube. The utility model discloses on the basis of original drainage tube, increased drainage funnel, receiving cylinder etc.. The drainage funnel enlarges the end part of the drainage tube, so that the waste liquid can be poured conveniently. The receiving cylinder is wrapped the drainage funnel in it, can receive the waste liquid outside the drainage funnel that unrestrained when the waste liquid is emptyd to can avoid unrestrained waste liquid that contains radioactive substance to the pollution phenomenon of environments such as table surface, instrument or room of hot room, thereby guarantee that the environment is in clean degree.

Description

Drainage discharge assembly, radioactive substance-containing waste liquid collecting device and hot chamber

Technical Field

The utility model relates to a waste liquid treatment technical field especially relates to a drainage discharges subassembly, contains radioactive substance's waste liquid collection device and hot chamber.

Background

With the rapid development of nuclear medicine, devices for radionuclide drug production and related operations are widely used, and a hot room is one of them. The hot chamber is a high radiation protection device which provides an effective protection place for corresponding operation or core equipment during production and subpackage of the radionuclide medicine, and is also a hotspot of current research. For example, the chinese utility model patent (CN 211695209U) discloses a radiopharmaceutical split charging hot chamber. Chinese utility model patent (CN 209357472U) discloses a hot chamber for radiopharmaceutical synthesis.

On the other hand, when radionuclide drugs are synthesized in a hot chamber, some waste liquid is inevitably generated. Because the waste liquid also contains a trace amount of radioactive substances, strict collection and treatment are also needed, for example, a tank similar to the novel radioactive waste liquid storage tank disclosed in the Chinese utility model (CN 216435476U) is adopted for collecting the waste liquid, and the waste liquid is drained into the tank through a flow guide pipe. However, because the radionuclide drug is synthesized in the hot chamber, an operator needs to perform related operations through a shielding window by using a glove or a sword-shaped manipulator, compared with the conventional operation by using hands directly, the convenience is greatly reduced, and meanwhile, the pipe diameter of the pipe orifice of the drainage pipe is usually smaller, so that in the process of dumping the waste liquid, the waste liquid is likely to fall outside the drainage pipe, the pollution of a working table surface, instruments and the like in the hot chamber is caused, the synthesis of the radionuclide drug is even affected, and the risk of leakage of the waste liquid exists.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that has unrestrained risk when waste liquid emptys among the prior art, provide a drainage emission subassembly, contain radioactive substance's waste liquid collection device and hot chamber. The utility model discloses on the basis of original drainage tube, increased drainage funnel, receiving cylinder, rubber buffer and sealed lid. The drainage funnel enlarges the end part of the drainage tube, so that the waste liquid can be poured conveniently. The rubber buffer can carry out the shutoff to drainage tube and drainage funnel. The receiving cylinder wraps the drainage funnel, can receive waste liquid outside the drainage funnel when the waste liquid is dumped, thereby avoiding the pollution phenomenon of the waste liquid containing radioactive substances to the working table surface, instruments and the like of a hot chamber, and ensuring that the inside of the hot chamber is in a clean degree.

The utility model adopts the technical proposal that:

a drainage discharge assembly, the drainage discharge assembly comprising:

the top of the receiving cylinder is open, and the bottom of the receiving cylinder is closed;

the sealing cover is arranged outside the open top of the receiving cylinder in a matching manner;

the diameter of the wide end of the conical drainage funnel is smaller than the inner diameter of the receiving cylinder, and the drainage funnel is positioned on the inner side of the receiving cylinder; the end surface position of the wide end of the drainage funnel is lower than the position of the open end surface of the receiving cylinder, and the narrow end of the drainage funnel faces the bottom of the receiving cylinder; the axial center of the receiving cylinder and the axial center of the drainage funnel are coincident or not coincident;

the rubber plug is arranged in the drainage funnel in a matching manner;

the outer diameter of the drainage tube is consistent with the diameter of the narrow end of the drainage funnel; the end part of one end of the drainage tube vertically penetrates through the bottom of the receiving cylinder and is connected and communicated with the narrow end of the drainage tube.

Further, the sealing cover is provided with a cover handle;

and/or the rubber plug is provided with a rubber plug handle;

and/or an annular groove is formed on the circumferential outer wall of the receiving cylinder, and a sealing ring is arranged in the annular groove in a matching manner.

Further, the sealing cover and the rubber plug are connected into a whole.

Furthermore, the outer wall of the drainage tube part in the receiving cylinder is provided with a through drainage hole.

Furthermore, the opening position of the drainage hole is positioned near the intersection of the inner side surface of the bottom of the receiving cylinder and the drainage tube, and the included angle alpha between the axial center direction of the drainage hole and the axial center direction of the end part of the drainage tube is less than or equal to 90 degrees; the lower edge of one end of the drainage hole, which faces the outside of the drainage pipe, is flush with the inner side surface of the bottom of the receiving cylinder or is lower than the inner side surface of the bottom of the receiving cylinder.

Further, the rubber stopper comprises a conical section and a cylindrical section; the shape of the conical section is matched with the shape of an inner cavity of the drainage funnel so as to seal the drainage funnel; the cylindrical section is matched with the shape of the inner cavity of the drainage tube from the end part of the drainage tube to the drainage hole so as to plug the drainage tube and the drainage hole.

Further, the bottom edge of the receiving cylinder is higher than the position where the receiving cylinder and the drainage tube intersect, and the smooth transition forms a funnel-like structure.

Based on the same inventive concept, the utility model also provides a waste liquid collection device who contains radioactive substance, waste liquid collection device includes:

the aforementioned drainage discharge assembly;

and the waste liquid tank is connected with the other end of the drainage tube, which is not connected with the drainage funnel.

Furthermore, the part near one end of the drainage tube connected with the waste liquid tank is bent in an S shape to form a submerged bend.

Based on the same inventive concept, the present invention also provides a hot cell, comprising:

the hot chamber comprises a hot chamber body, wherein a work table surface part in the hot chamber body is sunken to form an accommodating cavity; the accommodating cavity is provided with a sealing door in a matching way; after the sealing door closes the accommodating cavity, the surface of the sealing door is flush with the surface of the working table;

the aforementioned waste liquid collecting device containing radioactive substances; the receiving cylinder is arranged in the accommodating cavity; the waste liquid tank is arranged in the hot chamber body and is positioned below the working table surface.

The utility model has the advantages that:

1. the utility model discloses a solve the problem that has unrestrained risk when waste liquid emptys among the prior art, provide a drainage emission subassembly, contain radioactive substance's waste liquid collection device and hot chamber. The drainage discharging assembly comprises a drainage tube, a drainage funnel, a rubber plug, a receiving cylinder and a sealing cover. The utility model provides a drainage emission subassembly has increased drainage funnel, a receiving cylinder, rubber buffer and sealed lid on the basis of original drainage tube. The end part of the drainage tube is enlarged by the drainage funnel, so that waste liquid can be poured conveniently. The rubber buffer can carry out the shutoff to drainage tube and drainage funnel. The receiving cylinder is wrapped the drainage funnel in it, can receive the waste liquid outside the drainage funnel that unrestrained when the waste liquid is emptyd to can avoid unrestrained radioactive material-containing waste liquid to the pollution phenomenon of table surface, instrument etc. of hot room, thereby guarantee that hot indoor portion is in clean degree. The sealing cover is sealed for the second time to reduce the volatilization of the waste liquid.

2. The utility model provides a waste liquid collection device who contains radioactive substance discharges the subassembly through the drainage and guides the waste liquid, can realize containing radioactive substance's waste liquid and collect completely, avoids secondary pollution.

3. The utility model provides a hot room adjusts original waste liquid collection device, has increased the drainage and has discharged the subassembly, reduces the unrestrained influence of waste liquid, sets up simultaneously and holds chamber and sealing door and restrict the position that sets up of drainage emission subassembly to it is sealed to form in step, guarantees the clean degree in the hot room.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view of the drainage discharge assembly of example 1.

FIG. 2 is a schematic three-dimensional structure of the drainage discharge assembly of example 1.

Fig. 3 is an exploded view of the drainage discharge assembly in embodiment 1.

Fig. 4 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1.

Fig. 5 is a partially enlarged view of a portion B in fig. 4.

FIG. 6 is a schematic three-dimensional view of the radioactive substance-containing waste liquid collecting apparatus in example 2.

FIG. 7 is a schematic view of the structure of the hot chamber in example 3.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

In order to solve the problem that waste liquid is spilled in the process of pouring due to low operation convenience in the process of synthesizing radionuclide drugs in a hot chamber, the inventor designs and develops a drainage discharge assembly, and the structure of the drainage discharge assembly is shown in attached drawings 1 and 2. The drainage discharge assembly includes a drainage tube 1, a drainage funnel 2, a rubber stopper 3, a receiving cylinder 4 and a sealing cover 5.

Specifically, one end of the drainage tube 1 is connected with the waste liquid tank 6, and the other end is connected with the drainage funnel 2. The waste liquid containing radioactive substances is collected into a waste liquid tank 6 through a drainage tube 1 and waits for subsequent centralized treatment.

Further, the vicinity of one end of the draft tube 1 connected to the waste liquid tank 6 is bent in an S-shape to form a submerged bend 11. A small amount of waste liquid trapped in the submerged elbow 11 forms a liquid seal.

As shown in FIGS. 3 and 4, the drainage funnel 2 is tapered with a narrow end diameter corresponding to the outer diameter of the drainage tube 1. The narrow end of the drainage funnel 2 is connected with one end of the drainage tube 1, and the narrow end and the one end are communicated with each other. From this, waste liquid can be transferred from the drainage funnel 2 into the drainage tube 1. Because the wide end diameter of drainage funnel 2 is far greater than the diameter of drainage tube 1, enlarge the processing to the end of drainage tube 2 in other words to can enter into drainage tube 1 when being favorable to the waste liquid to empty, reduce the phenomenon outside dribbling area drainage tube 1.

And the rubber plug 3 is arranged in the drainage funnel 2 in a matching way. When the waste liquid is dumped, the rubber plug 3 is taken off. After the waste liquid is poured, a rubber plug 3 is plugged, and the drainage funnel 2 and the drainage tube 1 are plugged.

In order to facilitate the pulling of the rubber plug 3, a rubber plug handle 33 is formed on one surface of the rubber plug 3 facing the outside of the drainage funnel 2.

And the receiving cylinder 4 is closed at the bottom and is open at the top. The inner diameter of the receiving cylinder 4 is greater than the diameter of the wide end of the drainage funnel 2, for example, the inner diameter of the receiving cylinder 4 is 3 times the diameter of the wide end of the drainage funnel 2. The drainage funnel 2 is positioned on the inner side of the receiving cylinder 4, the end face position of the wide end of the drainage funnel 2 is lower than the open end face position of the receiving cylinder 4, and the receiving cylinder 4 wraps the drainage funnel 2 inside. One end part of the drainage tube 1 vertically penetrates through the bottom of the receiving cylinder 4 and is connected with the drainage funnel 2. An annular receiving region is thereby formed between the drainage funnel 2 and the receiving cylinder 4. When the waste liquid is emptyd, even there is a small amount of waste liquid unrestrained outside drainage funnel 2, also can fall into annular receiving area, is accepted by receiving cylinder 4, avoids the pollution phenomenon of unrestrained waste liquid to the table surface of hot room, instrument etc to guarantee that hot indoor portion is in clean degree.

In order to ensure the uniformity (distance between the wide end edge of the drainage funnel 2 and the inner wall of the receiving cylinder 4) at each position of the annular receiving area between the drainage funnel 2 and the receiving cylinder 4, namely, waste liquid which is sprinkled in different pouring directions can all fall into the receiving cylinder 4, the axial center of the receiving cylinder 4 and the axial center of the drainage funnel 2 coincide. The distances between the wide end edge of the drainage funnel 2 and the inner wall of the receiving cylinder 4 are the same, so that the influence of the direction of the waste liquid does not have to be taken into account.

As shown in FIG. 5, a through-hole 12 is opened in the outer wall of the portion of the draft tube 1 located in the receiving cylinder 4 so that the waste liquid scattered in the receiving cylinder 4 can flow into the waste liquid tank 6. From this, the waste liquid in the receiving cylinder 4 can enter into drainage tube 1 through drainage hole 12 in, finally collects in the waste liquid jar 1 to reduce the waste liquid volume in the receiving cylinder 4, and save the subsequent processing procedure to receiving cylinder 4, also can reduce the waste liquid volume of volatilizing in the receiving cylinder 4.

Further, in order to allow the waste liquid in the receiving cylinder 4 to completely flow into the drainage tube 1, the opening position of the drainage hole 12 is located at the intersection of the bottom inner side surface of the receiving cylinder 4 and the drainage tube 1. The included angle alpha between the axial center direction of the drainage hole 12 and the axial center direction of the end part of the drainage tube 1 is less than or equal to 90 degrees. The lower edge of the drainage hole 12 facing the outer wall of the drainage tube 1 is flush with the bottom inner side surface of the receiving cylinder 4 or slightly lower than the bottom inner side surface of the receiving cylinder 4. Thus, the waste liquid in the receiving cylinder 4 can be completely discharged, and the waste liquid poured from the drainage funnel 2 does not flow back into the receiving cylinder 4 through the drainage holes 12.

Further, in order to collect the waste liquid in the receiving cylinder 4 at the position of the drainage hole 12, the bottom edge of the receiving cylinder 4 is higher than the position where the receiving cylinder 4 and the drainage tube 1 intersect, and is smoothly transited. Thus, a funnel-like structure is formed at the bottom of the receiving cylinder 4, and the waste liquid can be automatically collected in the drainage holes 12 under the condition of the height difference of the bottom of the receiving cylinder 4.

Further, in order to match and make the rubber stopper 3 simultaneously block the drainage hole 12, the rubber stopper 3 is processed with a conical section 31 and a cylindrical section 32. The conical section 31 and the cylindrical section 32 are connected as one body. Wherein the shape of the conical section 31 matches the shape of the inner cavity of the drainage funnel 2. Cylindrical section 32 is form-fit with the end of draft tube 1 to the interior cavity of draft tube 1 at draft hole 12. From this, when rubber buffer 3 was plugged in, the cooperation of toper section 31 was plugged in drainage funnel 2 in, the cooperation of cylindricality section 32 was plugged in drainage tube 1 in, shutoff drainage funnel 2, drainage tube 1 and drainage hole 12 simultaneously.

A sealing cap 5, which is arranged outside the open top of the receiving cylinder 4 in a matching manner, for example, the open top of the receiving cylinder 4 is directly snapped into the sealing cap 5. The sealing cover 5 forms a seal after being combined with the receiving cylinder 4, and the drainage funnel 2 is sealed in the combined structure of the sealing cover 5 and the receiving cylinder 4.

In order to improve the sealing performance between the sealing cover 5 and the receiving cylinder 4, an annular groove 41 is formed on the circumferential outer wall near the open top end of the receiving cylinder 4, and a sealing ring 42 is arranged in the annular groove 41 in a matching mode. For example, as shown in the present embodiment, two annular grooves 41 are provided, and a seal ring 42 is provided in each annular groove 41. The pressing when the sealing cap 5 is closed deforms the sealing ring 42, thereby improving the sealing effect when the sealing cap 5 is combined with the receiving cylinder 4.

In order to facilitate the taking of the sealing cap 5, a cap handle 51 is provided on the top surface of the sealing cap.

In order to facilitate the closing of the sealing cap 5 onto the receiving cylinder 4, the inner edge of the open end of the sealing cap 5 is chamfered.

In order to save the working process, the sealing cap 5 and the rubber stopper 3 may be integrally connected. Thereby, the rubber stopper 3 can be synchronously inserted when the sealing cap 5 is closed.

The drainage in this embodiment discharges the subassembly, on the basis of original drainage tube, has increased drainage funnel, has received a section of thick bamboo, rubber buffer and sealed lid. The drainage funnel enlarges the end part of the drainage tube, so that the waste liquid can be poured conveniently. The rubber buffer can carry out the shutoff to drainage tube and drainage funnel. The receiving cylinder wraps the drainage funnel, can receive waste liquid outside the drainage funnel when the waste liquid is dumped, thereby avoiding the pollution phenomenon of the waste liquid containing radioactive substances to the working table surface, instruments and the like of a hot chamber, and ensuring that the inside of the hot chamber is in a clean degree. The sealing cover is sealed for the second time to reduce the volatilization of the waste liquid.

Example 2

A radioactive material-containing waste liquid collection apparatus comprising a drain and drain assembly and a waste liquid tank 6, as shown in figure 6.

Wherein, drainage discharges the subassembly and includes drainage tube 1, drainage funnel 2, rubber buffer 3, receiving cylinder 4 and sealed lid 5. The connection relationship and arrangement of the drainage tube 1, the drainage funnel 2, the rubber stopper 3, the receiving cylinder 4 and the sealing cover 5 are the same as those described in example 1.

And a waste liquid tank 6 which is a waste liquid storage container containing radioactive substances. Radioactive substances contained in the waste liquid tank 6 are relatively concentrated, so that radiation protection treatment needs to be performed according to protection requirements, such as addition of a lead shielding layer and the like.

The waste liquid collection device who contains radioactive substance in this embodiment discharges the subassembly through the drainage and guides the waste liquid, can realize containing radioactive substance's waste liquid and collect completely, avoids secondary pollution.

Example 3

A hot chamber including a hot chamber body 7, and a waste liquid collecting device and the like, as shown in fig. 7.

The hot chamber body 7 has the same or similar structure as the prior hot chamber, and is composed of a box body, a shielding window, a shielding door, gloves, a mechanical arm, a ventilation system, an exhaust system and the like, and the hot chamber body is not improved in the embodiment. The only adjustment is that the hot chamber body 7 is recessed at a location of the countertop 71 to form a receiving cavity 72 and to accommodate the sealing door 73. After the sealing door 73 closes the accommodating cavity 72, the surface of the sealing door is flush with the work table 71, so that the area of the work table 71 is not occupied.

The waste liquid collecting device comprises a drainage discharge assembly and a waste liquid tank 6.

And a waste liquid tank 6 which is provided inside the hot chamber body 7 and is located below the work table 71.

The drainage and discharge assembly comprises a drainage tube 1, a drainage funnel 2, a rubber plug 3, a receiving cylinder 4 and a sealing cover 5. The connection relationship and arrangement of the drainage tube 1, the drainage funnel 2, the rubber stopper 3, the receiving cylinder 4 and the sealing cover 5 are the same as those described in example 1. Meanwhile, the receiving cylinder 4 is disposed in the accommodating chamber 72. The drainage tube 1 passes through the containing cavity 72 and the receiving cylinder 4 and then is connected with the drainage funnel 2. The seal cover 5 is covered on the receiving cylinder 4 and then sealed again by the seal door 73.

The hot room in this embodiment adjusts original waste liquid collection device, has increased the drainage and has discharged the subassembly, reduces the unrestrained influence of waste liquid, sets up simultaneously and holds chamber and sealing door and discharge the position that sets up of subassembly and restrict to the drainage to it is sealed to form in step, guarantees the clean degree in the hot room.

It will be appreciated that the drain assembly of example 1 or the radioactive material-containing waste collection device of example 2 may also be used in non-hot-room settings, such as in a typical laboratory environment. Because the waste liquid containing radioactive substances still needs an operator to wear a necessary protective device for operation, the operation convenience is also reduced, namely, the risk of spilling exists. Therefore, the drainage and drainage assembly in embodiment 1 or the radioactive substance-containing waste liquid collecting device in embodiment 2 can also reduce the risk of spilling waste liquid when the waste liquid is poured.

Claims (10)

1. Drainage discharges subassembly, its characterized in that, drainage discharges the subassembly and includes:

the top of the receiving cylinder is open, and the bottom of the receiving cylinder is closed;

the sealing cover is arranged outside the open top of the receiving cylinder in a matching manner;

the diameter of the wide end of the conical drainage funnel is smaller than the inner diameter of the receiving cylinder, and the drainage funnel is positioned on the inner side of the receiving cylinder; the end surface position of the wide end of the drainage funnel is lower than the position of the open end surface of the receiving cylinder, and the narrow end of the drainage funnel faces the bottom of the receiving cylinder; the axial center of the receiving cylinder and the axial center of the drainage funnel are coincident or not coincident;

the rubber plug is arranged in the drainage funnel in a matching manner;

the outer diameter of the drainage tube is consistent with the diameter of the narrow end of the drainage funnel; the end part of one end of the drainage tube vertically penetrates through the bottom of the receiving cylinder and is connected and communicated with the narrow end of the drainage tube.

2. The drain assembly of claim 1, wherein the sealing cover has a cover handle thereon;

and/or the rubber plug is provided with a rubber plug handle;

and/or an annular groove is formed on the circumferential outer wall of the receiving cylinder, and a sealing ring is arranged in the annular groove in a matching manner.

3. The drain assembly of claim 1, wherein the sealing cap and the rubber stopper are connectable as a single piece.

4. The drain and drain assembly of claim 5363 of any of claims 1~3 wherein the outer wall of the portion of the drain tube located within the receiving cylinder has a through drain opening.

5. The drainage discharge assembly of claim 4 wherein the drainage holes are formed near the intersection of the inner surface of the bottom of the receiving cylinder and the drainage tube, and the included angle α between the axial center direction of the drainage holes and the axial center direction of the end of the drainage tube is less than or equal to 90 °; the lower edge of one end of the drainage hole, which faces the outside of the drainage pipe, is flush with the inner side surface of the bottom of the receiving cylinder or is lower than the inner side surface of the bottom of the receiving cylinder.

6. The drain assembly according to claim 4, wherein the rubber stopper includes a tapered section and a cylindrical section; the shape of the conical section is matched with the shape of an inner cavity of the drainage funnel so as to seal the drainage funnel; the cylindrical section is matched with the shape of the inner cavity of the drainage tube from the end part of the drainage tube to the drainage hole so as to plug the drainage tube and the drainage hole.

7. The draft discharge assembly of any of claims 1~3 wherein the bottom edge of said receiving drum is located higher than where said receiving drum intersects said draft tube and the smooth transition forms a funnel like structure.

8. A radioactive-substance-containing waste liquid collecting apparatus, comprising:

the drain and drain assembly of any one of claims 1~7;

and the waste liquid tank is connected with the other end of the drainage tube, which is not connected with the drainage funnel.

9. The radioactive substance-containing waste liquid collecting apparatus as claimed in claim 8, wherein a portion of the drainage tube near an end connected to the waste liquid tank is bent in an S-shape to form a submerged bend.

10. A thermal chamber, characterized in that the thermal chamber comprises:

the hot chamber comprises a hot chamber body, wherein a work table surface part in the hot chamber body is sunken to form an accommodating cavity; the accommodating cavity is provided with a sealing door in a matching way; after the sealing door closes the accommodating cavity, the surface of the sealing door is flush with the surface of the working table;

a radioactive substance-containing waste liquid collecting apparatus according to claim 8 or 9; the receiving cylinder is arranged in the accommodating cavity; the waste liquid tank is arranged in the hot chamber body and is positioned below the working table surface.

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