An eoeg apparatus chloroethane feed system
By designing rust removal components and one-way air intake components in the EOEG unit, the problem of difficult rust removal in the storage tank was solved, achieving efficient rust removal and filter anti-clogging, ensuring stable operation of the unit and catalyst performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NINGBO FUND ENERGY CO LTD
- Filing Date
- 2023-12-29
- Publication Date
- 2026-07-14
AI Technical Summary
In the EOEG unit, rust on the inner wall of the ethane monochloro storage tank is difficult to clean, leading to system contamination and filter clogging, which affects the operation of the unit.
A rust removal assembly was designed, including a connecting hole, a cleaning chamber, and a sealing assembly. High-speed airflow carries rust into the cleaning chamber, and combined with a one-way air intake assembly and a drain pipe, it achieves rust removal and water drainage, preventing ethane monochloro leaks.
It effectively cleans rust from storage tanks, prevents filter clogging, ensures normal operation of the unit, and improves catalyst performance and system stability.
Smart Images
Figure CN117654370B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of ethane-chlorofeeding systems, and more specifically to a ethane-chlorofeeding system for an EOEG (Ethylene Chloroethane Extraction) unit. Background Technology
[0002] The EOEG unit is a chemical plant used to produce ethylene oxide. Ethylene and oxygen are reacted in a specific ratio, with nitrogen as the stabilizing gas, in the presence of a silver catalyst to synthesize ethylene oxide. To obtain optimal selectivity, a trace amount of monochloroethane is added as a catalyst modifier. The amount of monochloroethane injected is crucial to catalyst performance.
[0003] However, ethane monochloroethane contains water. With prolonged use of the feed tank, water can easily accumulate at the bottom, eventually entering the discharge pipe and flowing into the filter, causing blockage. Furthermore, ethane monochloroethane containers must be thoroughly cleaned before use; small particles or rust can contaminate the system and hinder operation. Even after polishing the ethane monochloroethane container (storage tank), rust powder inside is difficult to remove. Summary of the Invention
[0004] To address the aforementioned issues, an EOEG unit chloroethane feeding system is provided, which solves the problem of difficult rust removal after grinding the inner wall of the storage tank through a rust removal component.
[0005] To address the problems of existing technologies, this invention provides a chloroethane feeding system for an EOEG (Ethanol-Oxychloroethane) device, comprising a storage tank, a transport pump, and a feed tank. The storage tank includes a feed port, a discharge port, a grinding assembly, a rust removal assembly, and a one-way air intake assembly. The storage tank stores chloroethane, the feed port is used to add chloroethane to the storage tank, the grinding assembly is disposed within the tank body of the storage tank, and the grinding assembly is used to grind the inner wall of the storage tank. The rust removal assembly includes a connecting hole, a cleaning chamber, and a sealing assembly. The cleaning chamber is located at the bottom of the storage tank, the connecting hole connects the storage tank and the cleaning chamber, and the sealing assembly is used to block the connecting hole during normal use. The one-way air intake assembly is used for one-way air intake. The feed tank is provided with a first feed port, a second feed port, a discharge pipe, and a drain pipe. The drain pipe is used to discharge liquid accumulated at the bottom of the feed tank, and the discharge pipe is equipped with a pressure transmitter for detecting pressure. The transport pump is used to transport chloroethane from the storage tank to the feed tank.
[0006] Preferably, the cleaning chamber is provided with an air inlet and an air outlet; the air inlet and air outlet are respectively located on both sides of the cleaning chamber; the rust cleaning assembly is also provided with a fan, which is used to generate a high-speed airflow through the cleaning chamber; the fan is provided with a connecting cover.
[0007] Preferably, the sealing assembly includes a sealing chamber, a first mounting plate, an electric push rod, and a sealing post; the sealing chamber is located at the bottom of the cleaning chamber; the first mounting plate slides against the inner wall of the sealing chamber, the sealing post is located on the first mounting plate, and the sealing post is used to block the connecting hole; the electric push rod is used to control the up and down movement of the first mounting plate.
[0008] Preferably, the one-way air intake assembly includes an air intake cylinder, a sealing plug, a receiving plate, and filter cotton; the air intake cylinder is disposed on the side wall of the storage tank, and the air intake cylinder includes a first channel and a second channel, the diameter of the first channel being smaller than that of the second channel; the sealing plug is provided with a first cylinder and a second cylinder, the first cylinder fitting against the inner wall of the first channel, and the diameter of the second cylinder being smaller than that of the second channel; the receiving plate is disposed in the second channel near the bottom, the center of the receiving plate is provided with a through hole, and a first spring for pushing the sealing plug is provided on the receiving plate; the filter cotton is disposed at the top of the air intake cylinder.
[0009] Preferably, a limiting groove is provided on the first channel; a limiting block is provided on the first cylinder; the limiting block and the limiting groove are in sliding fit.
[0010] Preferably, the bottom of the first channel is provided with a first inclined surface; the top of the second cylinder is provided with a second inclined surface; the second inclined surface can completely fit with the first inclined surface.
[0011] Preferably, the receiving plate is also provided with limit posts.
[0012] Preferably, the polishing assembly includes a rotating shaft, a servo motor, a polishing bracket, and a polishing disc; the rotating shaft is disposed in a storage tank, the polishing bracket is coaxially disposed with the rotating shaft, and the polishing bracket is fixedly connected to the rotating shaft; the polishing disc is disposed on the polishing bracket; the servo motor is used to drive the rotating shaft to rotate.
[0013] Preferably, the grinding bracket is provided with a second mounting plate and a sliding groove; the grinding disc is provided with a sliding rod and a second spring, the sliding rod is slidably engaged with the sliding groove, and the second spring is disposed between the second mounting plate and the grinding disc.
[0014] Preferably, the grinding disc has a curved surface.
[0015] The advantages of this invention compared to the prior art are:
[0016] 1. This invention is provided with a cleaning chamber and a connecting hole. The connecting hole extends vertically and connects the cleaning chamber and the storage tank. By injecting high-speed airflow into the cleaning chamber, the high-speed airflow flows from one end of the cleaning chamber to the other end. A one-way air intake component installed on the storage tank ensures that the air can only enter the storage tank from the outside when passing through the one-way air intake component. The airflow in the storage tank cannot flow out through the one-way air intake component. At this time, the gas at both ends of the connecting hole will generate a velocity difference, thereby generating a pressure difference. This causes the air near the connecting hole in the storage tank to carry the rust that has been polished off and be sucked into the cleaning chamber, and then flow out of the cleaning chamber with the high-speed airflow, thus cleaning the rust that has been polished off in the storage tank.
[0017] 2. The present invention is provided with a sealing component, which is used to seal the connecting hole during normal use of the storage tank to prevent ethane monochloro from leaking. The sealing chamber is located at the bottom of the cleaning chamber and is used to house the sealing column to avoid interfering with the airflow velocity in the cleaning chamber.
[0018] 3. The present invention provides a drain pipe at the bottom of the feed tank to drain the water accumulated at the bottom of the feed tank, and a pressure transmitter is installed on the discharge pipe so that the staff can easily detect when the filter is clogged. Attached Figure Description
[0019] Figure 1 A schematic diagram of the three-dimensional structure of an EOEG unit's chloroethane feeding system. Figure 1 .
[0020] Figure 2 A schematic diagram of the three-dimensional structure of an EOEG unit's chloroethane feeding system. Figure 2 .
[0021] Figure 3 A three-dimensional structural diagram of a storage tank in an EOEG (Ethylene Chloride-Coated Gas) unit's chloroethane feed system. Figure 1 .
[0022] Figure 4 A three-dimensional structural diagram of a storage tank in an EOEG (Ethylene Chloride-Coated Gas) unit's chloroethane feed system. Figure 2 .
[0023] Figure 5 A cross-section of a storage tank in an EOEG (Ethylene Chloride-Coated Gas) plant's chloroethane feed system. Figure 1 .
[0024] Figure 6 This is a partial schematic diagram of point A in the chloroethane feed system of an EOEG unit.
[0025] Figure 7 This is a partial schematic diagram of point B in the ethane chloroform feed system of an EOEG unit.
[0026] Figure 8 A cross-section of a storage tank in an EOEG (Ethylene Chloride-Coated Gas) plant's chloroethane feed system. Figure 2 .
[0027] Figure 9 This is a partial schematic diagram of point C in the ethane chloroform feed system of an EOEG unit.
[0028] Figure 10 This is a three-dimensional structural diagram of the feed tank of an EOEG (Ethylene Chloroethane) feeding system.
[0029] The diagram is labeled as follows: 1. Storage tank; 11. Feed port; 12. Discharge port; 13. Grinding assembly; 131. Rotating shaft; 132. Servo motor; 133. Grinding bracket; 1331. Second mounting plate; 13311. Slide groove; 134. Grinding disc; 1341. Slide rod; 1342. Second spring; 1343. Arc surface; 14. Rust removal assembly; 141. Connecting hole; 142. Cleaning chamber; 1421. Air inlet; 1422. Air outlet; 143. Sealing assembly; 1431. Sealing chamber; 1432. First mounting plate; 1433. Electric push rod; 1434. Sealing column; 14 4. Fan; 1441. Connecting cover; 15. One-way air intake assembly; 151. Air intake cylinder; 1511. First channel; 15111. Limiting groove; 15112. First inclined surface; 1512. Second channel; 152. Sealing plug; 1521. First cylinder; 1522. Second cylinder; 15221. Second inclined surface; 1523. Limiting block; 153. Receiving plate; 1531. First spring; 1532. Limiting post; 154. Filter cotton; 2. Transport pump; 3. Feed tank; 31. First feed inlet; 32. Second feed inlet; 33. Discharge pipe; 331. Pressure transmitter; 34. Drainage pipe. Implementation
[0030] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
[0031] Reference Figures 1-10 :
[0032] An EOEG (Extractable Chloroethane) feeding system includes a storage tank 1, a transport pump 2, and a feed tank 3. The storage tank 1 includes a feed inlet 11, a discharge outlet 12, a grinding assembly 13, a rust removal assembly 14, and a one-way air inlet assembly 15. The storage tank 1 stores monochloroethane. The feed inlet 11 is used to add monochloroethane to the storage tank 1. The grinding assembly 13 is disposed within the tank body of the storage tank 1 and is used to grind the inner wall of the storage tank 1. The rust removal assembly 14 includes a connecting hole 141, a cleaning chamber 142, and a sealing assembly 143. Chamber 142 is located at the bottom of storage tank 1. A connecting hole 141 connects storage tank 1 and cleaning chamber 142. A sealing assembly 143 is used to block the connecting hole 141 during normal use. A one-way air intake assembly 15 is used for one-way air intake. The feed tank 3 is provided with a first feed port 31, a second feed port 32, a discharge pipe 33, and a drain pipe 34. The drain pipe 34 is used to discharge the liquid accumulated at the bottom of the feed tank 3. A pressure transmitter 331 is provided on the discharge pipe 33 for detecting pressure. A transport pump 2 is used to transport monochloroethane from storage tank 1 to feed tank 3.
[0033] The storage tank 1 has its axis arranged horizontally. A feed port 11 and a discharge port 12 are located on the side wall of the storage tank 1, and flanges are provided on both the feed port 11 and the discharge port 12. A grinding assembly 13 is located inside the storage tank 1 and is used to grind the inner wall of the storage tank 1 to remove rust. A rust removal assembly 14 is used to remove the ground rust from the storage tank 1. A connecting hole 141 is located at the bottom of the storage tank 1 and extends vertically. Multiple connecting holes 141 are arranged at intervals. A cleaning chamber 142 is located at the bottom of the storage tank 1 and has openings at both ends. The connecting hole 141 connects the storage tank 1 and the cleaning chamber 142. During the grinding of the inner wall, the rust removed will fall along the cylinder wall under gravity until it reaches the perimeter of the connecting hole 141. Before cleaning the rust inside the tank, the feed port 11 and the discharge port 12 are sealed by the flange. Then, a high-speed airflow is injected into the cleaning chamber 142. The high-speed airflow flows from one end of the cleaning chamber 142 to the other end. The one-way air intake component 15 installed on the storage tank 1 ensures that the air can only enter the storage tank 1 from the outside when passing through the one-way air intake component 15. The airflow inside the storage tank 1 cannot flow out through the one-way air intake component 15. At this time, the gas at both ends of the connecting hole 141 will generate a velocity difference, thereby generating a pressure difference. This causes the air near the connecting hole 141 inside the storage tank 1 to carry the rust removed by the grinding process. The rust is drawn into the cleaning chamber 142 and flows out of the cleaning chamber 142 with the high-speed airflow, thus cleaning the rust polished off the storage tank 1. The sealing component 143 is used to block the flow hole to prevent ethane leakage when storing ethane in the storage tank 1. The axis of the feed tank 3 is arranged vertically. The first feed port 31 and the second feed port 32 are located on the side wall of the feed tank 3. Flanges are provided on the first feed port 31 and the second feed port 32. The first feed port 31 is used to inject ethylene, oxygen, nitrogen and silver into the feed tank 3 to synthesize ethylene oxide, where nitrogen is used as a stabilizing gas and silver is used as a catalyst. The second feed port 32 is used to inject ethane as a catalyst moderator, thereby improving the performance of the catalyst. The transport pump 2 is located in... Between storage tank 1 and feed tank 3, transport pump 2 is connected to the outlet 12 of storage tank 1 and the second inlet 32 of feed tank 3 via transport pipes, thereby transporting monochloroethane to feed tank 3. Feed tank 3 is equipped with a drain tank and a discharge pipe 33 at the bottom. A valve is installed on the drain pipe 34. The discharge pipe 33 is connected to a filter. Because monochloroethane contains water, with prolonged use of feed tank 3, water easily accumulates at the bottom of feed tank 3 and enters the discharge pipe 33 and flows into the filter, causing filter blockage. The water accumulated at the bottom of the feed pipe is discharged through the drain pipe 34. A pressure transmitter 331 is installed on the discharge pipe 33 to monitor the pressure in the discharge pipe 33. If the filter is blocked, the staff can detect it in time.
[0034] The cleaning chamber 142 is provided with an air inlet 1421 and an air outlet 1422; the air inlet 1421 and the air outlet 1422 are respectively located on both sides of the cleaning chamber 142; the rust cleaning assembly 14 is also provided with a fan 144, which is used to generate a high-speed airflow through the cleaning chamber 142; the fan 144 is provided with a connecting cover 1441.
[0035] The air inlet 1421 and the air outlet 1422 are respectively located on both sides of the cleaning chamber 142. The fan 144 and the connecting cover 1441 are located on the side closer to the air inlet 1421. One side of the connecting cover 1441 surrounds the output end of the fan 144, and the other side of the connecting cover 1441 surrounds the air inlet 1421. The diameter of the connecting cover 1441 is smaller the closer it is to the air inlet 1421. The connecting cover 1441 is used to guide the airflow generated by the fan 144.
[0036] The sealing assembly 143 includes a sealing chamber 1431, a first mounting plate 1432, an electric push rod 1433, and a sealing post 1434. The sealing chamber 1431 is located at the bottom of the cleaning chamber 142. The first mounting plate 1432 slides against the inner wall of the sealing chamber 1431. The sealing post 1434 is located on the first mounting plate 1432 and is used to block the connecting hole 141. The electric push rod 1433 is used to control the up and down movement of the first mounting plate 1432.
[0037] A sealed chamber 1431 is located at the bottom of the cleaning chamber 142. A sealing post 1434 extends vertically, corresponding one-to-one with a connecting hole 141. The sealing post 1434 is mounted on the first mounting plate 1432, with its top penetrating the bottom plate of the cleaning chamber 142. The first mounting plate 1432 slides against the inner wall of the sealed chamber 1431. An electric push rod 1433 is located at the bottom of the sealed chamber 1431. During normal use of the storage tank 1, the electric push rod 1433 controls the first mounting plate 1432 to rise, causing the first... The mounting plate 1432 contacts the bottom of the cleaning chamber 142, and the sealing post 1434 is inserted into the connecting hole 141 to seal the connecting hole 141. When cleaning the rust polished off the storage tank 1, the electric push rod 1433 controls the first mounting plate 1432 to fall, so that the first mounting plate 1432 contacts the inner wall of the sealing chamber 1431, and the sealing post 1434 is retracted into the sealing chamber 1431. The top of the sealing post 1434 is flush with the bottom of the cleaning chamber 142, thereby avoiding the sealing post 1434 from interfering with the airflow velocity flowing through the cleaning chamber 142.
[0038] The one-way air intake assembly 15 includes an air intake cylinder 151, a sealing plug 152, a receiving plate 153, and a filter cotton 154. The air intake cylinder 151 is disposed on the side wall of the storage tank 1 and includes a first channel 1511 and a second channel 1512. The diameter of the first channel 1511 is smaller than that of the second channel 1512. The sealing plug 152 is provided with a first cylinder 1521 and a second cylinder 1522. The first cylinder 1521 fits against the inner wall of the first channel 1511, and the diameter of the second cylinder 1522 is smaller than that of the second channel 1512. The receiving plate 153 is disposed in the second channel 1512 near the bottom. The center of the receiving plate 153 is provided with a through hole, and a first spring 1531 for pushing the sealing plug 152 is provided on the receiving plate 153. The filter cotton 154 is disposed on the top of the air intake cylinder 151.
[0039] The first channel 1511 and the second channel 1512 extend vertically, allowing air to enter the storage tank 1 through them. A first cylinder 1521 can slide relative to the first channel 1511. The second cylinder 1522 has a larger diameter than the first cylinder 1521. A receiving plate 153 is located near the bottom of the second channel 1512. A first spring 1531 is positioned between the receiving plate 153 and the sealing plug 152. The top of the first spring 1531 is fixedly connected to the second cylinder 1522. The first spring 1531 pushes the sealing plug 152 upwards until the second cylinder 1522 contacts the bottom of the first channel 1511, thus ensuring proper airflow in the storage tank 1. During normal use, the storage tank 1 is kept sealed. When cleaning the rust that has been polished off inside the storage tank 1, the air near the connecting hole 141 is drawn into the cleaning chamber 142 and flows out of the cleaning chamber 142 with the high-speed airflow, thereby forming a negative pressure chamber inside the storage tank 1. A pressure difference is generated on both sides of the sealing plug 152. The sealing plug 152 moves downward, the spring contracts, and the first cylinder 1521 disengages from the first channel 1511. Air enters the storage tank 1 through the through hole in the center of the first channel 1511, the second channel 1512, and the receiving plate 153. Air continuously flows into the storage tank 1. The filter cotton 154 is set at the top of the first channel 1511 and is used to filter the air entering the storage tank 1.
[0040] A limiting groove 15111 is provided on the first channel 1511; a limiting block 1523 is provided on the first cylinder 1521; the limiting block 1523 slides in conjunction with the limiting groove 15111.
[0041] The limiting block 1523 and the limiting groove 15111 are rectangular. The limiting block 1523 is higher than the first cylinder 1521. After the first cylinder 1521 is disengaged from the first channel 1511, the limiting block 1523 still slides with the limiting groove 15111, so that after the rust cleaning in the storage tank 1 is completed, the first spring 1531 can push the sealing plug 152 to reset.
[0042] The bottom of the first channel 1511 is provided with a first inclined surface 15112; the top of the second cylinder 1522 is provided with a second inclined surface 15221; the second inclined surface 15221 can be completely fitted with the first inclined surface 15112.
[0043] The first inclined surface 15112 and the second inclined surface 15221 extend around the axis of the first cylinder 1521. The diameter of the first inclined surface 15112 and the second inclined surface 15221 is smaller on the side closer to the first channel 1511. After the first cylinder 1521 is separated from the first channel 1511, when the air flows through the first channel 1511, the air first comes into contact with the second inclined surface 15221. The second inclined surface 15221 is used to guide the air, so that the air can enter the storage tank 1 through the first channel 1511 and the second channel 1512.
[0044] Limiting posts 1532 are also provided on the receiving plate 153.
[0045] The limiting post 1532 extends vertically and is used to limit the descent distance of the sealing plug 152 to prevent the bottom of the sealing plug 152 from contacting the receiving plate 153, thereby preventing air from flowing.
[0046] The polishing assembly 13 includes a rotating shaft 131, a servo motor 132, a polishing bracket 133, and a polishing disc 134. The rotating shaft 131 is disposed in the storage tank 1, and the polishing bracket 133 is coaxially disposed with the rotating shaft 131 and fixedly connected to the rotating shaft 131. The polishing disc 134 is disposed on the polishing bracket 133. The servo motor 132 is used to drive the rotating shaft 131 to rotate.
[0047] The rotating shaft 131 and the polishing bracket 133 are coaxially arranged with the storage tank 1. The rotating shaft 131 is rotatably connected to the storage tank 1, and the polishing bracket 133 is fixedly connected to the rotating shaft 131. One side of the rotating shaft 131 passes through the side wall of the storage tank 1. The servo motor 132 is set on the side wall of the storage tank 1. The motor shaft of the servo motor 132 is fixedly connected to the rotating shaft 131. The servo motor 132 is used to drive the rotating shaft 131 to rotate. The polishing disc 134 is set on the polishing bracket 133. The servo motor 132 drives the rotating shaft 131 to rotate. The rotating shaft 131 drives the polishing bracket 133, and the polishing bracket 133 drives the polishing disc 134, thereby polishing the inner wall of the storage tank 1.
[0048] The grinding bracket 133 is provided with a second mounting plate 1331 and a sliding groove 13311; the grinding disc 134 is provided with a sliding rod 1341 and a second spring 1342, the sliding rod 1341 is slidably engaged with the sliding groove 13311, and the second spring 1342 is disposed between the second mounting plate 1331 and the grinding disc 134.
[0049] The two sides of the second spring 1342 are fixedly connected to the grinding disc 134 and the second mounting plate 1331, respectively. There are three slide grooves 13311 and the number of slide rods 1341 is the same as that of the slide grooves 13311. The slide rods 1341 slide in cooperation with the slide grooves 13311. The spring is used to push the grinding disc 134. During the grinding process, the contact between the grinding disc 134 and the inner wall of the storage tank 1 is closer, which improves the grinding effect of the grinding disc 134.
[0050] The grinding disc 134 has an arc surface 1343.
[0051] The arc surface 1343 is set on the side of the grinding disc 134 near the inner wall of the storage tank 1. The arc surface 1343 can increase the contact area between the grinding disc 134 and the storage tank 1, thereby improving the grinding effect of the grinding disc 134.
[0052] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims
1. A chloroethane feeding system for an EOEG unit, comprising a storage tank (1), a transport pump (2), and a feed tank (3), characterized in that, The storage tank (1) includes a feed port (11), a discharge port (12), a grinding assembly (13), a rust removal assembly (14), and a one-way air intake assembly (15). Storage tank (1) is used to store monochloroethane, feed port (11) is used to add monochloroethane to storage tank (1), grinding assembly (13) is installed in the tank body of storage tank (1), grinding assembly (13) is used to grind the inner wall of storage tank (1); The rust removal assembly (14) includes a connecting hole (141), a cleaning chamber (142), and a sealing assembly (143). The cleaning chamber (142) is located at the bottom of the storage tank (1). The connecting hole (141) connects the storage tank (1) and the cleaning chamber (142). The sealing assembly (143) is used to block the connecting hole (141) during normal use. The one-way air intake assembly (15) is used for one-way air intake; The feed tank (3) is provided with a first feed inlet (31), a second feed inlet (32), a discharge pipe (33) and a drain pipe (34). The drain pipe (34) is used to discharge the liquid accumulated at the bottom of the feed tank (3). The discharge pipe (33) is provided with a pressure transmitter (331) for detecting pressure. The transport pump (2) is used to transport ethane monochloro from the storage tank (1) to the feed tank (3); The cleaning chamber (142) is provided with an air inlet (1421) and an air outlet (1422). The air inlet (1421) and air outlet (1422) are respectively located on both sides of the cleaning chamber (142); The rust removal assembly (14) is also equipped with a fan (144), which is used to generate a high-speed airflow through the cleaning chamber (142). A connecting cover (1441) is provided on the fan (144).
2. The chloroethane feeding system for an EOEG unit according to claim 1, characterized in that, The sealing assembly (143) includes a sealing chamber (1431), a first mounting plate (1432), an electric push rod (1433), and a sealing post (1434). A sealed chamber (1431) is located at the bottom of the cleaning chamber (142); The first mounting plate (1432) slides in contact with the inner wall of the sealing chamber (1431), and the sealing post (1434) is set on the first mounting plate (1432) to block the connecting hole (141). The electric actuator (1433) is used to control the up and down movement of the first mounting plate (1432).
3. The chloroethane feeding system for an EOEG unit according to claim 1, characterized in that, The one-way air intake assembly (15) includes an air intake cylinder (151), a sealing plug (152), a receiving plate (153), and a filter cotton (154). An air inlet (151) is installed on the side wall of the storage tank (1). The air inlet (151) includes a first channel (1511) and a second channel (1512). The diameter of the first channel (1511) is smaller than that of the second channel (1512). The sealing plug (152) is provided with a first cylinder (1521) and a second cylinder (1522). The first cylinder (1521) fits against the inner wall of the first channel (1511), and the diameter of the second cylinder (1522) is smaller than that of the second channel (1512). The receiving plate (153) is located near the bottom in the second channel (1512). A through hole is provided in the center of the receiving plate (153). A first spring (1531) is provided on the receiving plate (153) to push the sealing plug (152). The filter cotton (154) is positioned on top of the air intake cylinder (151).
4. The chloroethane feeding system for an EOEG unit according to claim 3, characterized in that, A limiting groove (15111) is provided on the first channel (1511); A limit block (1523) is provided on the first cylinder (1521); The limiting block (1523) and the limiting groove (15111) slide together.
5. The chloroethane feeding system for an EOEG unit according to claim 3, characterized in that, The bottom of the first channel (1511) is provided with a first inclined surface (15112); The second cylinder (1522) has a second inclined surface (15221) at its top; The second inclined plane (15221) can fit perfectly with the first inclined plane (15112).
6. The chloroethane feeding system for an EOEG unit according to claim 3, characterized in that, Limiting posts (1532) are also provided on the receiving plate (153).
7. The chloroethane feeding system for an EOEG unit according to claim 1, characterized in that, The polishing assembly (13) includes a rotating shaft (131), a servo motor (132), a polishing bracket (133), and a polishing disc (134). The rotating shaft (131) is set in the storage tank (1), and the grinding bracket (133) is coaxially set with the rotating shaft (131). The grinding bracket (133) is fixedly connected to the rotating shaft (131). The grinding disc (134) is mounted on the grinding support (133); The servo motor (132) is used to drive the rotating shaft (131) to rotate.
8. The chloroethane feeding system for an EOEG unit according to claim 7, characterized in that, The grinding bracket (133) is provided with a second mounting plate (1331) and a slide groove (13311). The grinding disc (134) is provided with a slide rod (1341) and a second spring (1342). The slide rod (1341) is slidably engaged with the slide groove (13311), and the second spring (1342) is located between the second mounting plate (1331) and the grinding disc (134).
9. The chloroethane feeding system for an EOEG unit according to claim 8, characterized in that, The grinding disc (134) has an arc surface (1343).