Chemical plant oxygen isolation material receiving device

Abstract

The invention belongs to the technical field of chemical plant automatic control, and particularly relates to an oxygen isolation material receiving device for a chemical plant. The device is divided into an upper half part and a lower half part, the upper half part comprises two closed box bodies, the interior of each box body is filled with argon, oxygen is isolated, sealing doors are arranged at the front ends of the box bodies, and each sealing door is provided with two refrigeration rod channels; the lower half part comprises a control box and a material trolley assembly; a material transition bin assembly is arranged in the middle of the left side of the device in a welded mode, a booster pump is arranged at the bottom of the material transition bin assembly in a bolted connection mode, and the booster pump is connected with a positive-pressure air supplementing pipe to supply argon to the box. A cylindrical tail gas emission space is connected to the middle of the right side of the device in a welded mode and is hollow, and a stainless steel tail gas emission assembly is arranged on the right side of the tail gas emission space in a welded mode. A temperature and humidity sensor and a pressure sensor are arranged on the upper portion of the box. An oxygen-free environment can be created, and materials are condensed and collected through the refrigeration rods.

Description

Technical Field

[0001] The invention belongs to the technical field of automatic control of chemical plants, and in particular relates to an oxygen-isolating material collecting device for chemical plants. Background Art

[0002] When a chemical plant is producing its main product, it needs to condense and collect the main process materials. However, the product material will be oxidized quickly when in contact with air, so an oxygen-free environment must be created. On the other hand, material collection requires precise control of the collection speed and bottling volume. The current existing technologies mainly include a collection method that creates a closed isolation space, but lack the maintenance of an oxygen-free environment, control of the material collection speed, and control of the bottling volume. Therefore, it is necessary to design a device that continuously isolates oxygen and can precisely control the material collection speed and bottling volume. Summary of the invention

[0003] Technical problem solved by the present invention: The present invention provides an oxygen-isolating material collecting device for a chemical plant, which can create an oxygen-free environment and use a refrigeration rod to condense and collect materials.

[0004] The technical solution adopted by the present invention is:

[0005] An oxygen-isolating material collecting device for a chemical plant is divided into an upper part and a lower part. The upper part includes two closed boxes filled with argon to isolate oxygen. A sealing door is provided at the front end of the box, and two cooling rod channels are provided on each sealing door. The lower part includes a control box and a material cart assembly. A material transition bin assembly is welded in the middle of the left side of the device, and a booster pump is bolted at the bottom of the material transition bin assembly. The booster pump is connected to a positive pressure air supply pipe to supply argon to the box. A cylindrical exhaust gas discharge space is welded in the middle of the right side of the device, and the interior is hollow. A stainless steel exhaust gas discharge assembly is welded on the right side of the exhaust gas discharge space. A temperature and humidity sensor and a pressure sensor are provided on the upper part of the box.

[0006] The sealed door is a quick-opening glass door, an inflatable door hinge is arranged on the upper part of the sealed door, the refrigeration rod channel is fixed to the bottom of the sealed door by welding, and is sealed in the form of a refrigeration rod outer door assembly; the material cart assembly includes a mobile trolley and a material adding tank.

[0007] The material transition bin assembly includes an internally hollow material transition bin, a quick-opening door is provided on the left side of the material transition bin, the quick-opening door is provided with an object filter compartment door cover, a material transition bin handle is provided on the object filter compartment door cover, and a filter compartment outer door rod is provided on the material transition bin handle; the material transition bin handle connects a deep groove ball bearing to the material transition bin door cover by welding, and a positioning pin is provided on the upper part of the deep groove ball bearing.

[0008] The material transition compartment handle is connected to the middle material transition compartment door handle, and the material transition compartment door handle is connected to the material transition compartment rotating shaft in a right-hand rotation manner, and a type A elastic retaining ring for the shaft is arranged at the right-hand bottom of the material transition compartment rotating shaft; the outer door rod of the filter compartment is connected to the material transition compartment handle, and a copper sleeve is arranged on the outside of the outer door rod of the filter compartment, and a hexagon socket countersunk screw is welded on the material transition compartment cover plate, and the copper sleeve is connected to the material transition compartment cover plate through the hexagon socket countersunk screw.

[0009] The exhaust gas emission component includes a base, a bare rod, a butterfly nut, an adjustment mechanism connecting seat, an adjustment plate extension plate, an adjustment plate, a hinge connection, and a support rod. The base is connected to the external structure of the exhaust gas emission space by welding, and the adjustment plate is connected to the base by a hinge connection. The adjustment plate is hollow inside, and the adjustment plate extension plate is arranged inside the adjustment plate in a nested connection manner; the bare rod is fixed to the base by a movable bolt connection, and the inside is hollow. A butterfly nut is arranged on the bare rod, and the support rod is connected to the butterfly nut. The support rod is inserted into the bare rod and adjusted by the butterfly nut, and the support rod is connected to the adjustment plate by the adjustment mechanism connecting seat.

[0010] A material pipe is welded inside the box body, and a starting point of the material pipe is a feed interface, which is arranged in the material transition bin, and the feed interface is connected to a gas cylinder storing materials.

[0011] The material pipe enters the closed space behind the sealing surface through the material transition bin, and 4 closed branch pipes are extended, and the closed branch pipes are connected to the material receiving chamber; the material receiving chamber has a built-in refrigeration rod through the refrigeration rod outer door assembly, and a circle of semiconductor refrigeration plates is arranged at the lower end of the refrigeration rod; a layer of sealing gasket is arranged on the contact surface between the refrigeration rod outer door assembly and the material receiving chamber, and the sealing gasket is made of fluororubber; a conical micro liquid accumulation groove is arranged at the bottom center of the material receiving chamber.

[0012] The cold end of the refrigeration plate is exposed outside the refrigeration rod, and the hot end of the refrigeration plate is embedded inside the refrigeration rod.

[0013] The cooling rod outer door assembly includes a sealing groove, a sealing groove tenon, a handle, and a cooling rod tenon. The sealing groove is connected to the box body, and the sealing groove is hollow inside. A sealing groove tenon is provided at each of the left and right ends of the sealing groove; a cooling rod tenon is provided at each of the left and right ends of the upper part of the cooling rod by welding, which can be rotated with the cooling rod and connected with the cooling rod tenon through the sealing groove tenon to form a sealed connection between the upper part of the cooling rod and the sealing groove; the handle is fixed on the top of the cooling rod by welding, and the cooling rod can be rotated to make the sealing groove tenon and the cooling rod tenon misaligned, so that the cooling rod can be tightly buckled in the sealing groove, and a fluororubber gasket is provided between the sealing groove and the cooling rod.

[0014] Four liquid accumulation branch pipes are welded at the bottom of the material receiving chamber, and the other ends of the four liquid accumulation branch pipes are connected to the liquid accumulation tank. A pressure sensor is fixed on the top of the liquid accumulation tank, and the bottom of the pressure sensor is connected to a pure copper pressure-guiding pipe; a pre-valve material pipe is arranged at the bottom of the liquid accumulation tank, and a regulating valve is fixed at the other end of the pre-valve material pipe, and the regulating valve adjusts the material flow at the valve outlet through the valve handle; a post-valve material pipe is arranged at the regulating valve outlet in a flange-connected manner, and the post-valve material pipe is fixed on the material tank; a material evaporation port, a pressure sensor (127), a tank body purge port, and a temperature sensor are respectively arranged on both sides of the top of the material tank, which are used to measure the tank body pressure, temperature and humidity, and serve as an interface for material evaporation and tank body purge; a freely movable trolley is arranged under the material tank, and the trolley is fixed to the bottom of the material tank by bolts.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The present invention provides an oxygen-free material collecting device for a chemical plant, which can create an oxygen-free environment, automatically collect materials through a cooling rod in a material collecting chamber, and transfer the materials to a material tank through a regulating valve behind a liquid storage tank.

[0017] (2) The oxygen-proof material collecting device for a chemical plant provided by the present invention ensures that the material collecting speed is controllable and adjustable through four refrigeration structures and regulating valves distributed on the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An external schematic diagram of an oxygen-isolating material collecting device for a chemical plant provided by the present invention;

[0019] Figure 2 Schematic diagram of the quick-opening structure of the left side of the material transition bin;

[0020] Figure 3 Schematic diagram of the exhaust emission component structure;

[0021] Figure 4 Schematic diagram of the internal connection structure of the device;

[0022] Figure 5 Schematic diagram of the structure of the refrigeration rod outer door assembly.

[0023] In the figure: 1- material transition chamber assembly; 2- sealing door; 3- refrigeration rod outer door assembly; 4- positive pressure air supply pipe; 5- booster pump; 6- temperature and humidity sensor; 7- pressure sensor; 8- exhaust emission assembly; 9- control box; 10- material car assembly; 11- inflation door hinge; 12- object filter cabin door cover; 13- material transition chamber handle; 14- filter cabin outer door rod; 15- material transition chamber door plate handle; 16- shaft elastic retaining ring type A; 17- deep groove ball bearing; 18- positioning pin; 19- right-hand thread sleeve; 20- material transition chamber shaft right-hand; 21- hexagon socket countersunk screw; 22- copper sleeve; 23- material transition chamber cover; 24- base; 25- polished rod; 26- butterfly nut; 27- adjustment mechanism connection seat; 28- adjustment Section plate extension plate; 29-adjustment plate; 30-hinge connection; 31-support rod; 32-sealing groove; 33-sealing groove mortise and tenon; 34-handle; 35-refrigeration rod tenon; 111-feeding interface; 112-material receiving chamber; 113-refrigeration rod outer door assembly; 114-sealing gasket; 115-refrigeration rod; 116-refrigeration plate; 117-micro liquid accumulation tank; 118-liquid accumulation branch pipe; 119-liquid accumulation tank; 120-pressure sensor; 121-material pipe before valve; 122-regulating valve; 123-material pipe after valve; 124-material tank; 125-trolley; 126-material evaporation port; 127-pressure sensor; 128-tank body purge port; 129-temperature sensor; 130-material pipe; 131-sealed branch pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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.

[0027] like Figure 1-5 As shown, the present invention provides an oxygen-isolating material collecting device for a chemical plant, which has a rectangular structure and is divided into an upper half and a lower half. The upper half includes two closed boxes, which are filled with argon to isolate oxygen. A sealed door 2 is provided at the front end of the box, and two refrigeration rod channels are provided on each sealed door; the lower half includes a control box 9 and a material cart assembly 10; the sealed door 2 is a quick-opening door glass, which can observe the internal working conditions from the outside under sealed conditions, and two air-filled door hinges 11 are provided on the upper part of the sealed door, and a circle of sealing gaskets are provided on the inner side of the sealed door 2 in an adhesive manner, and the refrigeration rod channel is made of stainless steel and is fixed to the bottom of the sealed door by welding, and is sealed in the form of a refrigeration rod outer door assembly 3; the material The material cart assembly 10 is designed in the form of a mobile cart plus a material tank, and has detachable and movable functions; the control box 9 is fixed to the lower left part of the device body by bolt connection, and is used to place the tools required for tank transportation; a material transition bin assembly 1 is welded in the middle left side of the device, and a booster pump 5 is bolted at the bottom of the material transition bin assembly 1, and the booster pump 5 is connected to the positive pressure air supply pipe 4 to supply argon to the box; a cylindrical exhaust gas discharge space is welded in the middle right side of the device, and the interior is hollow, and a stainless steel exhaust gas discharge assembly 8 is welded on the right side of the exhaust gas discharge space; a temperature and humidity sensor 6 and a pressure sensor 7 are provided on the upper part of the box.

[0028] The material transition bin assembly 1 is a stainless steel rectangular parallelepiped structure, hollow inside, sealed design, hollow on the right side, connected to the main frame behind the right sealed door by welding, the material transition bin is connected to the enclosed space behind the sealed door, sealed design. The left side of the material transition bin is designed in a quick-opening manner, such as Figure 2As shown, the quick-open door is provided with a stainless steel round object filter compartment door cover 12, a material transition compartment handle 13 is provided on the object filter compartment door cover 12, and a filter compartment outer door rod 14 is provided on the material transition compartment handle 13; the material transition compartment handle 13 connects the deep groove ball bearing 17 to the material transition compartment door cover 12 by welding, and a positioning pin 18 is provided on the upper part of the deep groove ball bearing 17 by welding. The material transition compartment door handle 15 is connected to the right-handed material transition compartment rotating shaft 20 by welding, and a shaft elastic retaining ring A type 16 is provided at the bottom of the right-handed material transition compartment rotating shaft 20; the filter compartment outer door rod 14 is connected to the material transition compartment handle 13 by welding, and a copper sleeve 22 is provided on the outside of the filter compartment outer door rod 14 by welding, and a hexagon socket countersunk screw 21 is welded on the material transition compartment cover plate 23. The copper sleeve 22 is connected to the material transition compartment cover plate 23 by the hexagon socket countersunk screw 21.

[0029] The exhaust gas emission component 8 is made of stainless steel. Figure 3 As shown, it includes a base 24, a bare rod 25, a butterfly nut 26, an adjustment mechanism connecting seat 27, an adjustment plate extension plate 28, an adjustment plate 29, a hinge connection 30, and a support rod 31. The base 24 is made of stainless steel and is connected to the external structure of the exhaust gas emission space by welding. An adjustment plate 29 is arranged on the base 24 by means of a hinge connection 30. The adjustment plate 29 is made of stainless steel and is hollow inside. An adjustment plate extension plate 28 is arranged inside the adjustment plate 29 by means of a nested connection and can extend outward; a bare rod 25 is fixed to the base 24 by means of a movable bolt connection, and the inside is hollow. A butterfly nut 26 is arranged on the bare rod 25, and the connection method is welding and punching. A support rod 31 is connected to the butterfly nut 26. The support rod 31 is inserted into the bare rod 25 and can be adjusted by the butterfly nut 26. The support rod 31 is connected to the adjustment plate 29 by means of an adjustment mechanism connecting seat 27.

[0030] The internal structure of the box is as follows Figure 4 As shown, a stainless steel material pipe 130 is welded in the box body, and the starting point of the material pipe 130 is a feed interface 111, which is arranged in the material transition bin. The feed interface 111 is a KF16 standard interface. When in use, it is connected to a gas cylinder for storing materials and placed in the material transition bin;

[0031] The material pipe 130 enters the enclosed space behind the sealing surface through the material transition bin, and extends 4 enclosed branch pipes 131, which are connected to the material receiving chamber 112 by welding; the material receiving chamber 112 is made of stainless steel, and is connected to a cooling rod outer door assembly 113 by a built-in cooling rod 115, and the cooling rod 115 is made of pure copper and hollow inside; a circle of semiconductor cooling plates 116 are arranged at the lower end of the cooling rod 115, which are connected by welding, and the cold end of the cooling plate 116 is exposed outside the cooling rod 115, and the hot end of the cooling plate 116 is embedded inside the cooling rod 115; a layer of sealing gasket 114 is arranged on the contact surface between the cooling rod outer door assembly 113 and the material receiving chamber 112, and the sealing gasket 114 is made of fluororubber; a conical micro liquid accumulation groove 117 is arranged at the bottom center of the material receiving chamber 112, and the micro liquid accumulation groove 117 is hollow inside and made of pure copper;

[0032] The refrigeration rod outer door assembly 113, such as Figure 5 As shown, it includes a sealing groove 32, a sealing groove tenon 33, a handle 34, and a cooling rod tenon 35. The sealing groove 32 is connected to the box body by welding. The sealing groove 32 is hollow and circular inside. A sealing groove tenon 33 is set at each of the left and right ends of the sealing groove 32; a cooling rod tenon 35 is set at each of the left and right ends of the upper part of the cooling rod 115 by welding, which can be rotated with the cooling rod 35 and docked with the cooling rod tenon 35 through the sealing groove tenon 33 to seal the upper part of the cooling rod 115 and the sealing groove 32; a handle 34 is fixed on the top of the cooling rod 115 by welding, and the cooling rod 115 can be rotated to make the sealing groove tenon 33 and the cooling rod tenon 35 misaligned, so that the cooling rod 115 can be tightly buckled in the sealing groove 32, and a fluororubber gasket is set between the sealing groove 32 and the cooling rod 115 to ensure air tightness.

[0033] The bottom of the receiving chamber 112 is provided with four liquid accumulation branch pipes 118 made of pure copper by welding, and the other ends of the four liquid accumulation branch pipes 118 are connected to a liquid accumulation tank 119 by welding, and the liquid accumulation tank 119 is made of stainless steel. A pressure sensor 120 is fixed on the top of the liquid accumulation tank 119 by bolt connection, and the bottom of the pressure sensor 120 is connected to a pure copper pressure-inducing pipe, and the length of the pressure-inducing pipe is a fixed value, which is used to measure the pressure change of the material inside the liquid accumulation tank;

[0034] A pre-valve material pipe 121 is welded at the bottom of the liquid accumulation tank 119, and the pre-valve material pipe 121 is made of stainless steel. A regulating valve 122 is fixed at the other end of the pre-valve material pipe 121 by flange connection, and the regulating valve 122 can adjust the material flow rate of the valve outlet through the valve handle; a post-valve material pipe 123 is flange-connected at the regulating valve outlet, and the post-valve material pipe 123 is fixed to the material tank 124 by flange connection; the material tank 124 is made of stainless steel and is used for collecting the final material. A material evaporation port 126, a pressure sensor 127, a tank body washing port 128, and a temperature sensor 129 are respectively arranged on both sides of the top of the material tank 124, which are used to measure the tank body pressure, temperature and humidity, and serve as an interface for material evaporation and tank body washing; a freely movable trolley 125 is arranged under the material tank 124, and the trolley 125 is fixed to the bottom of the material tank 124 by bolts.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A chemical plant oxygen isolation material collecting device, characterized in that: The device is divided into an upper part and a lower part. The upper part includes two closed boxes filled with argon to isolate oxygen. A sealing door (2) is provided at the front end of the box, and two cooling rod channels are provided on each sealing door. The lower part includes a control box (9) and a material vehicle assembly (10). A material transition bin assembly (1) is provided in the middle of the left side of the device by welding. A booster pump (5) is provided at the bottom of the material transition bin assembly (1) by bolt connection. The booster pump (5) is connected to a positive pressure air supply pipe (4) to supply argon to the box. A cylindrical exhaust gas discharge space is connected in the middle of the right side of the device by welding. The space is hollow inside. A stainless steel exhaust gas discharge assembly (8) is provided on the right side of the exhaust gas discharge space by welding. A temperature and humidity sensor (6) and a pressure sensor (7) are provided on the upper part of the box.

2. The oxygen-isolating material collecting device for a chemical plant according to claim 1, characterized in that: The sealed door (2) is a quick-opening glass door, an air-filled door hinge (11) is arranged on the upper part of the sealed door, the refrigeration rod channel is fixed to the bottom of the sealed door by welding, and is sealed in the form of a refrigeration rod outer door assembly (3); the material cart assembly (10) includes a mobile trolley and a material adding tank.

3. The oxygen-isolating material collecting device for a chemical plant according to claim 1, characterized in that: The material transition bin assembly (1) comprises an internally hollow material transition bin, a quick-opening door is provided on the left side of the material transition bin, the quick-opening door is provided with an object filter compartment door cover (12), a material transition bin handle (13) is provided on the object filter compartment door cover (12), and a filter compartment outer door rod (14) is provided on the material transition bin handle (13); the material transition bin handle (13) connects a deep groove ball bearing (17) to the material transition bin door cover (12) by welding, and a positioning pin (18) is provided on the upper part of the deep groove ball bearing (17).

4. The oxygen-isolating material collecting device for a chemical plant according to claim 3, characterized in that: The material transition compartment handle (13) is connected to the middle material transition compartment door handle (15), and the material transition compartment door handle (15) is connected to the right-handed material transition compartment shaft (20), and a shaft elastic retaining ring A type (16) is arranged at the bottom of the right-handed material transition compartment shaft (20); the filter compartment outer door rod (14) is connected to the material transition compartment handle (13), a copper sleeve (22) is arranged outside the filter compartment outer door rod (14), a hexagon socket countersunk screw (21) is welded on the material transition compartment cover plate (23), and the copper sleeve (22) is connected to the material transition compartment cover plate (23) through the hexagon socket countersunk screw (21).

5. The oxygen-isolating material collecting device for a chemical plant according to claim 1, characterized in that: The exhaust gas emission assembly (8) comprises a base (24), a bare rod (25), a butterfly nut (26), an adjustment mechanism connecting seat (27), an adjustment plate extension plate (28), an adjustment plate (29), a hinge connection (30), and a support rod (31). The base (24) is connected to the external structure of the exhaust gas emission space by welding, and the adjustment plate (29) is connected to the base (24) by a hinge connection (30). The adjustment plate (29) is hollow inside, and the adjustment plate extension plate (28) is arranged inside the adjustment plate (29) in a nested connection manner; the bare rod (25) is fixed to the base (24) by a movable bolt connection, and the inside is hollow. A butterfly nut (26) is arranged on the bare rod (25), and the support rod (31) is connected to the butterfly nut (26). The support rod (31) is inserted into the bare rod (25) and adjusted by the butterfly nut (26). The support rod (31) is connected to the adjustment plate (29) by the adjustment mechanism connecting seat (27).

6. The oxygen-isolating material collecting device for a chemical plant according to claim 1, characterized in that: A material pipe (130) is welded inside the box body, and the starting point of the material pipe (130) is a feed interface (111) which is arranged in the material transition bin, and the feed interface (111) is connected to a gas cylinder storing materials.

7. The oxygen-isolating material collecting device for a chemical plant according to claim 6, characterized in that: The material pipe (130) enters the enclosed space behind the sealing surface through the material transition bin, and extends four enclosed branch pipes (131), and the enclosed branch pipes (131) are connected to the material receiving chamber (112); the material receiving chamber (112) has a built-in cooling rod (115) through a cooling rod outer door assembly (113), and a circle of semiconductor cooling plates (116) is arranged at the lower end of the cooling rod (115); a layer of sealing gasket (114) is arranged on the contact surface between the cooling rod outer door assembly (113) and the material of the material receiving chamber (112), and the sealing gasket (114) is made of fluororubber; a conical micro liquid accumulation groove (117) is arranged at the bottom center of the material receiving chamber (112).

8. The oxygen-isolating material collecting device for a chemical plant according to claim 7, characterized in that: The cold end of the refrigeration plate (116) is exposed outside the refrigeration rod (115), and the hot end of the refrigeration plate (116) is embedded inside the refrigeration rod (115).

9. The oxygen-isolating material collecting device for a chemical plant according to claim 8, characterized in that: The cooling rod outer door assembly (113) comprises a sealing groove (32), a sealing groove tenon (33), a handle (34), and a cooling rod tenon (35). The sealing groove (32) is connected to the box body, the sealing groove (32) is hollow inside, and a sealing groove tenon (33) is respectively arranged at the left and right ends of the sealing groove (32); a cooling rod tenon (35) is respectively arranged at the left and right ends of the upper part of the cooling rod (115) by welding, and can rotate with the cooling rod (35) through the sealing The mortise and tenon groove (33) is butted against the tenon (35) of the cooling rod, and the upper part of the cooling rod (115) is tightly connected with the sealing groove (32); a handle (34) is fixed on the top of the cooling rod (115) by welding, and the cooling rod (115) can be rotated to make the sealing mortise and tenon groove (33) and the cooling rod tenon (35) misaligned, so that the cooling rod (115) is tightly buckled in the sealing groove (32), and a fluororubber gasket is arranged between the sealing groove (32) and the cooling rod (115).

10. The oxygen-isolating material collecting device for a chemical plant according to claim 9, characterized in that: Four liquid accumulation branch pipes (118) are welded at the bottom of the material receiving chamber (112), and the other ends of the four liquid accumulation branch pipes (118) are connected to a liquid accumulation tank (119). A pressure sensor (120) is fixed on the top of the liquid accumulation tank (119), and a pure copper pressure-guiding pipe is connected to the bottom of the pressure sensor (120); a pre-valve material pipe (121) is arranged at the bottom of the liquid accumulation tank (119), and a regulating valve (122) is fixed at the other end of the pre-valve material pipe (121), and the regulating valve (122) regulates the material flow at the valve outlet through the valve handle; the regulating valve outlet is provided in a flange connection manner. A material pipe (123) is arranged behind the valve, and the material pipe (123) behind the valve is fixed on the material tank (124); a material evaporation port (126), a pressure sensor (127), a tank body purge port (128), and a temperature sensor (129) are arranged on both sides of the top of the material tank (124) for measuring the tank body pressure, temperature and humidity, and serving as an interface for material evaporation and tank body purge; a freely movable trolley (125) is arranged under the material tank (124), and the trolley (125) and the bottom of the material tank (124) are fixed by bolts.

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