CN219588691U - Liquid nitrogen storage tank installation base and control box - Google Patents

Abstract

The utility model discloses a liquid nitrogen storage tank mounting base and a control box, which comprise a liquid storage component, wherein the liquid storage component comprises a tank body, a connecting pipe and a mounting mechanism, the connecting pipe is arranged on the side wall of the tank body and is close to the top, the mounting mechanism comprises a mounting base, a mounting plate movably connected inside the mounting base, a threaded rod, a movable block and a lifting frame, the middle part of the bottom wall of the mounting base and the middle part of the lower surface of the mounting plate are close to a double-shaft servo motor, the threaded rod is in transmission connection with an output shaft of the double-shaft servo motor through a coupler, the movable block is in threaded connection with the outer surface of the threaded rod, the lifting frame is arranged between the eight movable blocks, when the liquid storage component is required to be moved and conveyed, the double-shaft servo motor can drive the threaded rod to rotate, the movable block can be driven to move through threads, and the mounting plate and the liquid storage component can be driven to rise by the lifting frame to facilitate the liquid storage component to be conveyed to a mobile vehicle for moving and conveying.

Description

Liquid nitrogen storage tank installation base and control box

Technical Field

The utility model relates to the technical field of liquid nitrogen cooling, in particular to a liquid nitrogen storage tank mounting base and a control box for cooling a cryogenic separation device.

Background

The hydrogen-carbon separation device utilizes different temperatures of carbon monoxide and hydrogen condensation to carry out rectification analysis, achieves separation and purification of carbon monoxide and hydrogen, and can realize gas liquefaction only in an ultralow temperature environment, the device utilizes liquid nitrogen to carry out cooling, the requirement on the liquid nitrogen is higher, the overlong cooling time is one of main factors influencing the starting progress of the hydrogen-carbon separation device, after the qualified liquid nitrogen is extracted by the air separation device in conventional design, the hydrogen-carbon separation cold box starts to lead the liquid nitrogen to carry out cooling, but because the hydrogen-carbon separation cold box cannot be cooled too quickly, the cooling time is long, the cooling time of the hydrogen-carbon separation cold box often cannot reach the technological requirement, and the normal running of the device is influenced.

The existing liquid nitrogen pipeline, low-temperature manual valve and liquid nitrogen pump and its return line cooperation that set up is used, can provide liquid nitrogen through the liquid nitrogen pump to the hydrogen carbon separation cold box when air separation device is driven but not produce qualified liquid nitrogen, make the liquid nitrogen storage tank normally supply nitrogen to the hydrogen carbon separation cold box, thereby reach the purpose that the hydrogen carbon separation cold box cooled down in advance, be favorable to shortening the time that the hydrogen carbon separation cold box got into cold and is equipped with, reduce the system temperature to-132 ℃ before air separation device does not produce qualified liquid nitrogen, whole driving time shortens 10 hours, improved the driving efficiency and the node of device and controlled, provide good basic condition for the safe steady driving of device.

In the use process of the existing liquid nitrogen storage tank, most of the liquid nitrogen storage tank is directly placed on the ground or fixed to the liquid nitrogen storage tank through a bolt fixing mode, when the liquid nitrogen storage tank needs to be moved or carried, the liquid nitrogen storage tank is heavier and the installed position is lower, so that the follow-up movement and carrying of the liquid nitrogen storage tank are affected, and therefore the liquid nitrogen storage tank installation base and the control box are provided.

Disclosure of Invention

This section is intended to summarize some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments, which may be simplified or omitted in this section, as well as the description abstract and the title of the utility model, to avoid obscuring the objects of this section, description abstract and the title of the utility model, which is not intended to limit the scope of this utility model.

The present utility model has been made in view of the above and/or problems occurring in the prior art.

Therefore, the technical problem to be solved by the utility model is that when the liquid nitrogen storage tank needs to be moved or carried, the liquid nitrogen storage tank is heavier and the installation position is lower, so that the movement and the carrying of the liquid nitrogen storage tank are influenced.

In order to solve the technical problems, the utility model provides the following technical scheme: a liquid nitrogen storage tank mounting base comprises a base body,

the liquid storage assembly comprises a tank body and a connecting pipe arranged on the side wall of the tank body and close to the top; the method comprises the steps of,

the mounting mechanism comprises a mounting base, a mounting plate movably connected inside the mounting base, a threaded rod which is arranged in the middle of the inner bottom wall of the mounting base and the middle of the lower surface of the mounting plate and is close to the double-shaft servo motor, and is in transmission connection with an output shaft of the double-shaft servo motor through a coupler, a moving block which is in threaded connection with the outer surface of the threaded rod, and a lifting frame which is arranged among the eight moving blocks; the bottom of stock solution subassembly sets up the upper surface at the mounting panel, and the bottom of stock solution subassembly is located the inside of installation base.

As a preferable scheme of the liquid nitrogen storage tank installation base, the liquid nitrogen storage tank installation base comprises the following components: the lower surface of mounting panel and the interior bottom wall of installation base all are provided with the installation piece, and the installation piece is equipped with eight, eight the threaded rod rotates respectively and connects in eight the inside of installation piece.

As a preferable scheme of the liquid nitrogen storage tank installation base, the liquid nitrogen storage tank installation base comprises the following components: the four corners department of mounting panel lower surface and the four corners department of diapire all are provided with the fixed block in the installation base, and the fixed block is equipped with eight, eight the one end that biax servo motor was kept away from to the threaded rod is connected with eight respectively the fixed block is close to biax servo motor's surface rotation.

As a preferable scheme of the liquid nitrogen storage tank installation base, the liquid nitrogen storage tank installation base comprises the following components: eight the surface of threaded rod all overlaps and is equipped with the organ cover, and the organ cover is equipped with sixteen the both ends of organ cover set up respectively in eight the surface of movable block, installation piece and fixed block.

As a preferable scheme of the liquid nitrogen storage tank installation base, the liquid nitrogen storage tank installation base comprises the following components: the top of installation base inside wall all is provided with the installation telescopic link, and the installation telescopic link is equipped with eight, every four the one end that the installation telescopic link is close to the stock solution subassembly is provided with the clamping plate, two the clamping plate is close to the surface of stock solution subassembly all is provided with the blotter, and blotter and the surface in close contact with of jar body.

As a preferable scheme of the liquid nitrogen storage tank installation base, the liquid nitrogen storage tank installation base comprises the following components: the middle part of installation base inside wall all rotates and is connected with "V" type pole, two the inside of "V" type pole is all swing joint has short extension pole and long extension pole, two the one end that "V" type pole was kept away from to short extension pole is rotated with the lateral wall of mounting panel respectively and is connected, two the one end that "V" type pole was kept away from to long extension pole respectively with two the clamping plate is kept away from the surface rotation of stock solution subassembly.

The utility model has the beneficial effects that: when the liquid storage assembly needs to be moved and carried, the double-shaft servo motor can be used for driving the threaded rod to rotate, the movable block can be driven to move through threads, the matched lifting frame can drive the mounting plate and the liquid storage assembly to ascend, the liquid storage assembly is conveniently carried on the movable vehicle to move and carry, the liquid storage assembly is placed on the upper surface of the mounting plate, the mounting plate is lowered, the bottom of the liquid storage assembly is moved to the inside of the mounting base, when the mounting plate is lowered, the clamping plate is driven to move through the V-shaped rod matched with the short extension rod and the long extension rod, the liquid storage assembly can be clamped and fixed, and the stability of the liquid storage assembly in the use process is increased.

In view of the fact that the liquid nitrogen storage tank mounting base is controlled by the control device in the working process, most of the control device is mounted on the outer surface of the liquid nitrogen storage tank and affects the dismounting and the overhauling of the control device, the control box is provided.

In order to solve the technical problems, the utility model also provides the following technical scheme: a control box, its characterized in that: the liquid nitrogen storage tank mounting base comprises the liquid nitrogen storage tank mounting base; the method comprises the steps of,

the control assembly comprises a supporting plate, a control box, control equipment, sliding blocks and a sliding chute, wherein the supporting plate is rotatably connected to the middle part of the side wall of the liquid storage assembly through a torsion spring; the sliding grooves are formed in two, and the two sliding blocks are respectively and slidably connected to the inner parts of the two sliding grooves.

As a preferred embodiment of the control box according to the present utility model, wherein: the inside locating lever that is provided with of backup pad, the surface swing joint of locating lever has the locating piece, one side cover of locating lever surface is equipped with the positioning spring, and the both ends of positioning spring set up respectively at the inside lateral wall of backup pad and the lateral wall of locating piece, the lateral wall of locating piece and the bottom in close contact with of control box lateral wall.

As a preferred embodiment of the control box according to the present utility model, wherein: the top of stock solution subassembly lateral wall is provided with the limiting plate, limiting plate lower surface is provided with spacing telescopic link and spacing spring, and two spacing springs overlap respectively and establish the surface at two spacing telescopic links, two spacing telescopic link and spacing spring's lower extreme is provided with the stopper, and the lower surface and the upper surface in close contact of control box of stopper.

As a preferred embodiment of the control box according to the present utility model, wherein: the lateral wall rotation of control box is connected with the chamber door, and the chamber door is equipped with two, and the lateral wall of two case doors all is provided with the handle.

The utility model has another beneficial effect: the control box is placed on the upper surface of the supporting plate, the supporting plate can be supported through the supporting rod matched sliding block and the sliding groove, the strength of the supporting plate and the stability of the control box in the use process are increased, the positioning block and the limiting block can be driven to move through the elastic force of the positioning spring and the limiting spring, the control box is fixed, the stability of the control box in the use process is increased, and the control box is convenient to disassemble, assemble and overhaul by subsequent staff.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a front cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of the structure of FIG. 2A in accordance with the present utility model;

fig. 4 is a right side view of the present utility model.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

In the following detailed description of the embodiments of the present utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration only, and in which is shown by way of illustration only, and in which the scope of the utility model is not limited for ease of illustration. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

Further still, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1-4, in a first embodiment of the present utility model, a liquid nitrogen storage tank mounting base is provided, a dual-shaft servo motor 203 is started, a threaded rod 204 can be driven to rotate, a moving block 205 can be driven to move through threads, and a lifting frame 206 can be matched to drive a mounting plate 202 and a liquid storage assembly 100 to lift, so that the liquid storage assembly 100 can be conveniently carried to a moving vehicle for moving and carrying.

Specifically, the liquid storage assembly 100 includes a tank body and a connecting pipe disposed on the left side wall of the tank body near the top; the mounting mechanism 200 comprises a mounting base 201, a mounting plate 202 movably connected inside the mounting base 201, a double-shaft servo motor 203 arranged in the middle of the bottom in the mounting base 201 and the middle of the lower surface of the mounting plate 202 and close to the front side and the rear side, a threaded rod 204 in transmission connection with the output shaft of the double-shaft servo motor 203 through a coupler, a moving block 205 in threaded connection with the outer surface of the threaded rod 204 and a lifting frame 206 arranged among the eight moving blocks 205; the bottom of stock solution subassembly 100 sets up the upper surface at mounting panel 202, and the bottom of stock solution subassembly 100 is located the inside of installation base 201, the lower surface of mounting panel 202 and the interior diapire of installation base 201 all are provided with installation piece 207, and installation piece 207 is equipped with eight, eight threaded rods 204 rotate respectively and connect the inside at eight installation pieces 207, the four corners department of mounting panel 202 lower surface and the four corners department of the interior diapire of installation base 201 all are provided with fixed block 208, and fixed block 208 is equipped with eight, the one end that biax servo motor 203 was kept away from to eight threaded rods 204 is close to the surface rotation connection of biax servo motor 203 with eight fixed block 208 respectively, the surface of eight threaded rods 204 all overlaps and is equipped with organ cover 209, and organ cover 209 is equipped with sixteen, sixteen organ cover 209's both ends set up the surface at eight movable block 205 respectively, installation piece 207 and fixed block 208.

Wherein, when the liquid storage assembly 100 needs to be moved and carried, the double-shaft servo motor 203 can be operated to drive the threaded rod 204 to rotate, the moving block 205 can be driven to move through threads, the matching lifting frame 206 can drive the mounting plate 202 and the liquid storage assembly 100 to rise, and the liquid storage assembly 100 is convenient to be carried on a moving vehicle for moving and carrying.

To sum up, when threaded rod 204 rotates, can restrict the position of threaded rod 204 through installation piece 207 and fixed block 208, increase the stability of threaded rod 204 in the rotation in-process, when movable block 205 removes, can drive organ cover 209 and stretch out and draw back, can block the dust through organ cover 209, avoid the dust to adhere to the outward surface of threaded rod 204 and cause the influence to the removal of movable block 205.

Example 2

Referring to fig. 1-4, in a second embodiment of the present utility model, the embodiment is based on the previous embodiment, except that when the mounting plate 202 descends, the V-shaped rod 212 cooperates with the short extension rod 213 and the long extension rod 214 to drive the clamping plate 211 to move, so as to clamp and fix the liquid storage assembly 100, and increase the stability of the liquid storage assembly 100 during use.

Specifically, the top of left side wall and right side wall all is provided with installation telescopic link 210 in the installation base 201, and installation telescopic link 210 is equipped with eight, every four one end that installation telescopic link 210 is close to stock solution subassembly 100 is provided with clamping plate 211, two clamping plates 211 are close to the surface of stock solution subassembly 100 all is provided with the blotter, and blotter and the surface in close contact with of jar body, the middle part of the left side wall and right side wall in the installation base 201 all rotates and is connected with "V" type pole 212, the inside of two "V" type poles 212 all swing joint has short extension pole 213 and long extension pole 214, the one end that "V" type pole 212 was kept away from to two short extension poles 213 is connected with the left side wall and the right side wall rotation of mounting panel 202 respectively, the one end that "V" type pole 212 was kept away from to two long extension poles 214 is kept away from the surface rotation that stock solution subassembly 100 with two clamping plate 211 respectively.

Wherein, place the upper surface of mounting panel 202 with stock solution subassembly 100, make mounting panel 202 decline remove the bottom of stock solution subassembly 100 to the inside of installation base 201, when mounting panel 202 descends, drive clamping plate 211 through "V" type pole 212 cooperation short extension rod 213 and long extension rod 214 and remove, can press from both sides tight fixedly to stock solution subassembly 100, increase the stability of stock solution subassembly 100 in the use.

In summary, when the clamping plate 211 moves, the position of the clamping plate 211 can be limited by installing the telescopic rod 210, and the stability of the clamping plate 211 during the moving and using processes is increased.

Example 3

Referring to fig. 1-4, in a third embodiment of the present utility model, a control box is provided, where a control box 302 is placed on an upper surface of a supporting plate 301, and the supporting plate 301 can be supported by a supporting rod 306 in cooperation with a sliding block 307 and a sliding groove 308, so as to increase the strength of the supporting plate 301 and the stability of the control box 302 during use.

Specifically, the control assembly 300 includes a support plate 301 rotatably connected to the middle of the right side wall of the liquid storage assembly 100 through a torsion spring, a control box 302 disposed on the upper surface of the support plate 301, a control device disposed inside the control box 302, support rods 306 rotatably connected to the right side of the lower surface of the support plate 301 near the front end and the rear end, sliding blocks 307 rotatably connected to the lower ends of the two support rods 306, and a sliding chute 308 opened on the right side wall of the liquid storage assembly 100; the chute 308 is equipped with two, two sliders 307 are sliding connection respectively in the inside of two spouts 308, the inside right side of backup pad 301 is provided with locating lever 303, the surface swing joint of locating lever 303 has locating piece 305, the left side cover of locating lever 303 surface is equipped with locating spring 304, and the both ends of locating spring 304 set up the left side wall in backup pad 301 inside and the left side wall of locating piece 305 respectively, the left side wall of locating piece 305 and the bottom in close contact with of control box 302 right side wall, the top of stock solution subassembly 100 right side wall is provided with limiting plate 309, limiting plate 309 lower extreme front end and rear end all are provided with spacing telescopic link 310 and spacing spring 312, and two spacing spring 312 cover are established respectively at the surface of two spacing telescopic link 310, the lower extreme of two spacing telescopic link 310 and spacing spring 312 is provided with stopper 311, and the lower surface and the upper surface in close contact of control box 302, the right side wall of control box 302 rotates and is connected with the chamber door, and the chamber door is equipped with two, the right side wall of two chamber doors all is provided with the handle.

Wherein, place control box 302 at the upper surface of backup pad 301, can support backup pad 301 through bracing piece 306 cooperation slider 307 and spout 308, increase the intensity of backup pad 301 and the stability of control box 302 in the use, can drive locating piece 305 and stopper 311 through the elasticity of locating spring 304 and spacing spring 312 and remove, press from both sides tightly fixedly control box 302, increase control box 302 stability in the use, and be convenient for follow-up staff to control box 302 dismouting and maintenance.

To sum up, after the control box 302 is disassembled, the supporting plate 301 can be driven to rotate by the elasticity of the torsion spring, the supporting plate 301 is retracted, the volume of the liquid storage assembly 100 is reduced, and the liquid storage assembly 100 is convenient for a worker to carry.

It is important to note that the construction and arrangement of the utility model as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present utility model. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility models. Therefore, the utility model is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in order to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the utility model, or those not associated with practicing the utility model).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (10)

1. The utility model provides a liquid nitrogen storage tank installs base which characterized in that: comprising the steps of (a) a step of,

the liquid storage assembly (100) comprises a tank body and a connecting pipe arranged on the side wall of the tank body and close to the top; the method comprises the steps of,

the mounting mechanism (200) comprises a mounting base (201), a mounting plate (202) movably connected inside the mounting base (201), a double-shaft servo motor (203) arranged in the middle of the inner bottom wall of the mounting base (201) and the middle of the lower surface of the mounting plate (202), a threaded rod (204) in transmission connection with the output shaft of the double-shaft servo motor (203) through a coupler, a moving block (205) in threaded connection with the outer surface of the threaded rod (204) and a lifting frame (206) arranged among the eight moving blocks (205); the bottom of stock solution subassembly (100) sets up the upper surface at mounting panel (202), and the bottom of stock solution subassembly (100) is located the inside of installation base (201).

2. The liquid nitrogen tank mounting base of claim 1, wherein: the lower surface of mounting panel (202) and the interior bottom wall of installation base (201) all are provided with installation piece (207), and installation piece (207) are equipped with eight, eight threaded rod (204) rotate respectively and connect in eight the inside of installation piece (207).

3. The liquid nitrogen tank mounting base of claim 1 or 2, wherein: four corners of mounting panel (202) lower surface and the four corners department of diapire all are provided with fixed block (208) in mounting base (201), and fixed block (208) are equipped with eight, eight threaded rod (204) keep away from the one end of biax servo motor (203) respectively with eight fixed block (208) are close to the surface rotation connection of biax servo motor (203).

4. A liquid nitrogen tank mounting base as claimed in claim 3, wherein: eight the surface of threaded rod (204) all overlaps is equipped with organ cover (209), and organ cover (209) are equipped with sixteen, sixteen the both ends of organ cover (209) set up respectively eight the surface of movable block (205), installation piece (207) and fixed block (208).

5. The liquid nitrogen tank mounting base of claim 1, wherein: the top of installation base (201) inside wall all is provided with installation telescopic link (210), and installation telescopic link (210) are equipped with eight, every four the one end that installation telescopic link (210) is close to stock solution subassembly (100) is provided with clamping plate (211), two the surface that clamping plate (211) is close to stock solution subassembly (100) all is provided with the blotter, and blotter and the surface in close contact with of jar body.

6. The liquid nitrogen tank mounting base of claim 5, wherein: the middle part of installation base (201) inside wall all rotates and is connected with "V" type pole (212), two the inside of "V" type pole (212) is all swing joint has short extension pole (213) and long extension pole (214), two the one end that "V" type pole (212) was kept away from to short extension pole (213) is rotated with the lateral wall of mounting panel (202) respectively and is connected, two the one end that "V" type pole (212) was kept away from to long extension pole (214) respectively with two the surface rotation that stock solution subassembly (100) was kept away from to clamp plate (211).

7. A control box, its characterized in that: a liquid nitrogen storage tank mounting base comprising any one of claims 1 to 6; the method comprises the steps of,

the control assembly (300) comprises a supporting plate (301) connected to the middle part of the side wall of the liquid storage assembly (100) in a rotating way through a torsion spring, a control box (302) arranged on the upper surface of the supporting plate (301), control equipment arranged in the control box (302), a sliding block (307) connected to the lower surface side of the supporting plate (301) close to the supporting rods (306) in a rotating way, and sliding grooves (308) arranged on the side walls of the liquid storage assembly (100), wherein the sliding block (307) is connected to the lower ends of the two supporting rods (306) in a rotating way; the two sliding grooves (308) are arranged, and the two sliding blocks (307) are respectively and slidably connected inside the two sliding grooves (308).

8. The control box of claim 7, wherein: the inside locating lever (303) that is provided with of backup pad (301), the surface swing joint of locating lever (303) has locating piece (305), the side cover of locating lever (303) surface is equipped with positioning spring (304), and the both ends of positioning spring (304) set up the lateral wall in backup pad (301) inside and the lateral wall of locating piece (305) respectively, the lateral wall of locating piece (305) and the bottom in close contact with of control box (302) lateral wall.

9. The control box of claim 7, wherein: the top of stock solution subassembly (100) lateral wall is provided with limiting plate (309), limiting plate (309) lower surface be provided with spacing telescopic link (310) and spacing spring (312), and two spacing springs (312) are overlapped respectively and are established at the surface of two spacing telescopic links (310), two the lower extreme of spacing telescopic link (310) and spacing spring (312) is provided with stopper (311), and the lower surface and the upper surface in close contact with of control box (302) of stopper (311).

10. The control box of claim 7, wherein: the lateral wall rotation of control box (302) is connected with the chamber door, and the chamber door is equipped with two, and the lateral wall of two chamber doors all is provided with the handle.