Hydrogen purification apparatus for improving hydrogen adsorption

Abstract

The application relates to the technical field of hydrogen purification, in particular to hydrogen purification equipment for improving hydrogen adsorption, which comprises a U-shaped supporting plate and a base fixedly connected to the upper surface of the U-shaped supporting plate, the upper surface of the base is provided with a purification assembly, the purification assembly comprises a filtering cylinder fixedly connected to the inside of a rectangular shell and a filter screen belt sleeved on the surface of the filtering cylinder; the filter screen belt rotates in conjunction with the filtering cylinder, cooperating with a conveying roller one and a conveying roller two driven by a motor, so that oil stains in hydrogen can be continuously filtered, 3A molecular sieve can first remove water in nitrogen in a deep way, a copper-based deoxidizer can reduce the oxygen content, nitrogen after double purification is heated by electric heating wires, is obliquely blown to the filter screen belt through an air guide nozzle, cooperates with a roller shaft to extrude and drip off cleaning liquid, reduces the water content of the filter screen belt after drying, meanwhile, nitrogen is an inert gas, can exclude air around the filter screen to form an inert atmosphere, and can avoid the mixing of hydrogen and air to generate a safety risk.

Description

Technical Field

[0001] This invention relates to the field of hydrogen purification technology, and in particular to a hydrogen purification device for improving hydrogen adsorption. Background Technology

[0002] As a clean energy carrier, the purity of hydrogen directly affects the efficiency and safety of downstream applications such as fuel cells and chemical synthesis. In particular, hydrogen used in adsorption processes must have its content of impurities such as oil, moisture, and oxygen strictly controlled. Therefore, efficient hydrogen purification equipment has become a key demand in the industry.

[0003] Currently, most hydrogen purification equipment uses fixed filter screen structures for oil filtration. After long-term use, these filters are prone to clogging due to oil, leading to a decrease in filtration efficiency. This requires frequent shutdowns for disassembly and cleaning, which not only affects production continuity but also increases labor maintenance costs. Although some equipment has attempted to add cleaning mechanisms, the cleaning fluid is not completely separated from the oil, which can easily cause secondary pollution of the filter screen. Furthermore, the residual moisture on the filter screen surface after cleaning is difficult to remove quickly. If the moisture enters the subsequent adsorption stage with the hydrogen, it will reduce the activity of the adsorbent and may even cause safety hazards. Summary of the Invention

[0004] To overcome the technical defects of existing technologies, this invention provides a hydrogen purification device for improving hydrogen adsorption.

[0005] The technical solution adopted in this invention is: a hydrogen purification device for improving hydrogen adsorption, comprising a U-shaped support plate and a base fixedly connected to the upper surface of the U-shaped support plate. A purification component is disposed on the upper surface of the base. The purification component includes a filter cylinder fixedly connected inside a rectangular shell and a filter screen belt sleeved on the surface of the filter cylinder. The filter screen belt, when rotating while adhering to the surface of the filter cylinder, filters oil contaminants from the hydrogen. An oxygen removal component is disposed above the U-shaped support plate. The oxygen removal component is used to dry the cleaned filter screen belt with nitrogen. The oxygen removal component includes components fixedly connected inside a circular shell. The hollow cylinder contains a copper-based deoxidizer and a 3A molecular sieve. The 3A molecular sieve removes moisture from the gas, and the copper-based deoxidizer removes oxygen. A rectangular shell contains two symmetrically arranged air guide nozzles that direct nitrogen gas at an angle towards the filter belt. A cleaning assembly is also located inside the rectangular shell, causing the air guide nozzles to reciprocate longitudinally as the filter belt rotates. Two brush rollers inside the rectangular shell automatically rotate with the filter belt to clean oil and grease from it.

[0006] Preferably, a rectangular shell is fixedly connected to a groove on the upper surface of the base. An exhaust channel is inserted into the upper surface of the rectangular shell, and an air inlet channel is inserted into one side of the rectangular shell. The air inlet channel communicates with the interior of the filter cylinder, and the exhaust channel communicates with the interior of the rectangular shell. Multiple filter holes are opened on the upper part of the surface of the filter cylinder. A second conveyor roller and a first conveyor roller are arranged inside the rectangular shell. The two ends of the shaft of the first conveyor roller are respectively inserted into the rotating holes opened on both sides of the rectangular shell. A motor is installed on one side of the rectangular shell, and the end of the motor output shaft is fixedly connected to one end of the shaft of the first conveyor roller. The filter mesh belt is attached to the surfaces of the first conveyor roller and the second conveyor roller.

[0007] Preferably, an upper sealing plate and a lower sealing plate are fixedly connected inside the rectangular shell. The filter belt is located in the sealing grooves opened on the surfaces of the upper and lower sealing plates, and a sealing gasket is provided in the sealing grooves opened inside the upper and lower sealing plates to seal the filter belt with the upper and lower sealing plates. A conical hopper is fixedly connected to the bottom of the rectangular shell, and a guide pipe is inserted into the bottom of the conical hopper. A valve is installed at the other end of the guide pipe.

[0008] Preferably, a circular shell is fixedly connected to a circular groove on the upper surface of the base, and a hollow cylinder is fixedly connected to a mounting hole at the bottom of the circular shell. Two filter screens are fixedly connected inside the hollow cylinder, and a copper-based deoxidizer and a 3A molecular sieve are disposed between the two filter screens. The copper-based deoxidizer is located above the 3A molecular sieve. A second filter screen is disposed between the copper-based deoxidizer and the 3A molecular sieve. The second filter screen is fixedly connected inside the hollow cylinder. The top of the hollow cylinder communicates with the interior of the circular shell, and a connecting pipe is fixedly connected to the bottom of the hollow cylinder. The other end of the connecting pipe is inserted into an air inlet hole on the surface of a rectangular shell, and the end of the connecting pipe connected to the rectangular shell is located between the upper sealing plate and the lower sealing plate.

[0009] Preferably, a fan is installed on one side of the rectangular shell. An air inlet pipe is fixedly connected to the air inlet end of the fan, and a delivery air pipe is fixedly connected to the air outlet end of the fan. The other end of the air inlet pipe is inserted into the surface of the circular shell. A heating wire is installed inside the air inlet pipe and communicates with the interior of the circular shell. The other end of the delivery air pipe is inserted into a circular groove on the surface of the rectangular shell, and a T-junction is fixedly connected to the end of the delivery air pipe inside the rectangular shell. A spring tube is inserted into a circular hole on the upper surface of each air guide nozzle. The other two ends of the T-junction are fixedly connected to the spring tubes at corresponding positions. Both air guide nozzles are fixedly connected between two side plates. A connecting rod is fixedly connected to the bottom surface of the side plates. The connecting rod is inserted into a sealing groove opened on the upper surface of the lower sealing plate. The connecting rod and the lower sealing plate are slidably connected. A rectangular frame is fixedly connected to the bottom end of the connecting rod. An L-shaped rod is fixedly connected to the bottom surface of the rectangular frame. Two symmetrically arranged levers are fixedly connected to the surface of the conveyor roller shaft. The two air guide nozzles are located between the upper sealing plate and the lower sealing plate. A rubber sleeve is fixedly connected to the bottom surface of the upper sealing plate. The rubber sleeve is located between the two air guide nozzles and is fitted onto the surface of the filter belt.

[0010] Preferably, the rectangular frame is located on the side of the lower sealing plate away from the upper sealing plate. A U-shaped frame is inserted into the inner slot of the rectangular frame. A roller is rotatably connected inside the U-shaped frame. A first spring is fixedly connected to the two U-shaped frames on opposite sides. The two rollers are respectively in contact with the filter belt. A pressure sensor is installed inside the circular housing. An air inlet pipe is inserted into the upper surface of the circular housing. A one-way valve is installed inside the air inlet pipe. An automatic air replenishment valve is installed at the end of the air inlet pipe away from the circular housing.

[0011] Preferably, the two ends of the second conveyor roller are respectively inserted into the rotating holes opened on the surfaces of the two rectangular plates. The two rectangular plates are respectively located in the square grooves opened inside the rectangular shell. The rectangular plates and the rectangular shell are slidably connected. A middle connecting plate is fixedly connected between the two rectangular plates. A flat plate is provided below the middle connecting plate. Multiple springs are fixedly connected between the middle connecting plate and the flat plate. An inner rod is fixedly connected to the bottom surface of the flat plate. A sealing sleeve is fixedly fitted on the surface of the inner rod. The sealing sleeve is inserted into the inside of the cylindrical sleeve. The cylindrical sleeve is inserted into the fixing hole opened on the surface of the conical bucket. The sealing sleeve and the cylindrical sleeve are slidably connected in a sealing manner. A counterweight ball is fixedly connected to the bottom end of the inner rod. The counterweight ball is located outside the conical bucket.

[0012] Preferably, a brush roller 1 and a brush roller 2 are disposed between the two rectangular plates. The two ends of the rotating shafts of brush roller 1 and brush roller 2 are respectively inserted into rotating grooves 2 opened on adjacent sides of the two rectangular plates. A synchronous wheel 2 is fixedly sleeved on one end of the rotating shaft of brush roller 2, and a gear 2 is fixedly sleeved on the other end of the rotating shaft of brush roller 2. A gear 1 is meshed with the surface of gear 2. Gear 1 is fixedly sleeved on one end of the rotating shaft of brush roller 1. A synchronous wheel 1 is fixedly sleeved on the surface of one end of the rotating shaft of conveyor roller 2. A synchronous belt is sleeved on the surfaces of synchronous wheel 1 and synchronous wheel 2. Synchronous wheel 2 is connected to synchronous wheel 1 through synchronous belt. Brush roller 1 and brush roller 2 are located directly below the two air guide nozzles. Brush roller 1 and brush roller 2 are in contact with the surface of the filter screen belt. The bristles on the surfaces of brush roller 1 and brush roller 2 are all in contact with the filter screen belt.

[0013] Preferably, a liquid storage tank is fixedly connected to the groove two opened on the upper surface of the base, and a bent tube is fixedly inserted into the bottom end of the liquid storage tank. The other end of the bent tube is inserted into the surface of the rectangular shell, and the end of the bent tube connected to the rectangular shell is located below the lower sealing plate.

[0014] Preferably, the surface of the rectangular shell is provided with an oil removal assembly, which includes an inclined plate 1, an inclined plate 2, a three-way pipe 2, and a valve 2. Two symmetrically arranged inclined plates 1 are fixedly connected to the upper surface of the upper sealing plate. An inclined plate 2 is fixedly connected to the adjacent side of the two inclined plates 1. The adjacent side of the two inclined plates 2 is in contact with the surface of the filter belt. The two ends of the inclined plates 1 and 2 are respectively in contact with the inner wall of the rectangular shell. A three-way pipe 2 is inserted into the two side flow holes opened on the surface of the rectangular shell. A valve 2 is installed at the other end of the three-way pipe 2. The end of the three-way pipe 2 located inside the rectangular shell is located between the inclined plates 1 and 2.

[0015] The beneficial effects of this invention are as follows: In the purification component, the filter screen belt rotates in close contact with the filter cylinder, and together with the motor-driven conveyor roller one and conveyor roller two, it achieves continuous filtration of oil stains in hydrogen. At the same time, the inclined plate two of the oil removal component can scrape off some oil stains in advance. The brush roller one and brush roller two of the cleaning component rotate synchronously in opposite directions in the cleaning liquid to deeply clean the oil stains on the filter screen, avoid filter screen clogging, maintain a high-efficiency filtration state for a long time, and ensure that the oil stains in the hydrogen are completely removed.

[0016] Inside the hollow cylinder of the deoxygenation component, 3A molecular sieves first deeply remove moisture from the nitrogen, and copper-based deoxidizers then reduce the oxygen content to ≤10ppm. The double-purified nitrogen is heated by a heating wire and blown at an angle onto the filter belt through an air guide nozzle. The conveyor roller drives a lever to make the air guide nozzle move longitudinally back and forth, repeatedly blowing air onto the same area of ​​the filter screen. Combined with the roller squeezing to drain the cleaning liquid, the moisture content of the filter screen after drying is ≤0.5%. At the same time, nitrogen is an inert gas, which can eliminate the air around the filter screen to form an inert atmosphere, avoiding the safety risks caused by the mixing of hydrogen and air, meeting the explosion-proof requirements.

[0017] The liquid storage tank automatically replenishes cleaning fluid when oil sludge is discharged from the conical hopper via a bent pipe, eliminating the need for frequent manual replenishment. A pressure sensor inside the circular shell monitors the nitrogen pressure, and when it is insufficient, it automatically replenishes nitrogen through a gas replenishment valve linked to the PSA nitrogen generator. A one-way valve prevents backflow, and a pressure regulating valve stabilizes the pressure, ensuring a stable nitrogen supply. Furthermore, nitrogen can be recycled back to the circular shell via a connecting pipe, reducing the consumption of fresh nitrogen and lowering operating costs.

[0018] In the cleaning assembly, the counterweight ball pulls the spring two through the inner rod and the plate, causing the middle connecting plate to drive the rectangular plate to pull down the conveyor roller two, ensuring that the filter belt is always taut and avoiding slack that affects filtration. The sealing gaskets of the upper and lower sealing plates, as well as the sealing sleeve and the cylindrical sleeve, are connected in a sliding manner to prevent hydrogen leakage and cleaning fluid seepage, ensuring the equipment's airtight operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 Sectional view at point AA;

[0021] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0023] Figure 5 For the present invention Figure 2 Enlarged view of point C in the middle;

[0024] Figure 6 For the present invention Figure 2 Enlarged view at point D;

[0025] Figure 7 This is a schematic diagram of the structure of the filter cylinder and filter belt in this invention;

[0026] Figure 8 This is a schematic diagram of the structure of the motor and the rectangular housing in this invention;

[0027] Figure 9 This is a schematic diagram of the hollow cylinder and connecting pipe in this invention;

[0028] Figure 10 This is a schematic diagram of the structure of the air intake pipe and the circular shell in this invention;

[0029] Figure 11 This is a schematic diagram of the rectangular plate and the connecting plate in this invention;

[0030] Figure 12 This is a schematic diagram of the structure of gear one and gear two in this invention;

[0031] Figure 13 This is a schematic diagram of the structure of inclined plate one and inclined plate two in this invention;

[0032] Figure 14 This is a schematic diagram of the rectangular frame and air guide nozzle in this invention;

[0033] Figure 15 This is a schematic diagram of the roller and U-shaped frame in this invention.

[0034] In the picture:

[0035] 1. Base; 2. U-shaped frame; 3. Purification component; 31. Air inlet channel; 32. Exhaust channel; 33. Filter cylinder; 34. Filter mesh belt; 35. Filter holes; 36. Conveyor roller one; 37. Conveyor roller two; 38. Motor; 39. Upper sealing plate; 310. Lower sealing plate; 311. Conical hopper; 312. Guide pipe; 313. Valve one; 314. Rectangular shell; 4. Deoxygenation component; 41. Circular shell; 42. Filter mesh one; 43. Copper-based deoxidizer; 44. Filter mesh two; 45. 3A molecular sieve; 46. Hollow cylinder; 47. Connecting pipe; 48. Air inlet pipe; 49. One-way valve; 410. Automatic air replenishment valve; 411. Pressure sensor; 412. Fan; 413. Air inlet pipe; 414. Conveying air pipe; 415. Spring tube; 416. T-joint 417. Pipe 1; 418. Side plate; 419. Air guide nozzle; 420. Connecting rod; 421. Rectangular frame; 422. L-shaped rod; 423. Toggle lever; 424. Inner slot; 425. U-shaped frame; 426. Roller; 427. First spring; 428. Rubber sleeve; 5. Cleaning assembly; 51. Brush roller 1; 52. Brush roller 2; 53. Synchronous pulley 1; 54. Synchronous pulley 2; 55. Synchronous belt; 56. Gear 1; 57. Gear 2; 58. Rectangular plate; 59. Central connecting plate; 510. Spring 2; 511. Flat plate; 512. Cylindrical sleeve; 513. Inner rod; 514. Counterweight ball; 515. Sealing sleeve; 516. Liquid storage tank; 517. Bending pipe; 6. Oil removal assembly; 61. Inclined plate 1; 62. Inclined plate 2; 63. T-pipe 2; 64. Valve 2. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings:

[0037] like Figures 1 to 15 As shown, this embodiment provides a hydrogen purification device for improving hydrogen adsorption, including a U-shaped support plate 2 and a base 1 fixedly connected to the upper surface of the U-shaped support plate 2. A purification component 3 is provided on the upper surface of the base 1. The purification component 3 includes an inlet channel 31, an exhaust channel 32, a filter cylinder 33, a filter belt 34, filter holes 35, a first conveyor roller 36, a second conveyor roller 37, a motor 38, an upper sealing plate 39, a lower sealing plate 310, a conical hopper 311, a guide pipe 312, a first valve 313, and a rectangular shell 314. A filter cylinder 33 is fixedly connected inside the rectangular shell 314. A filter belt 34 is fitted onto the surface of the filter cylinder 33. When the filter belt 34 rotates while adhering to the surface of the filter cylinder 33, it filters oil stains from the hydrogen. The upper surface of the base 1... A rectangular housing 314 is fixedly connected to the groove. An exhaust channel 32 is inserted into the upper surface of the rectangular housing 314, and an air inlet channel 31 is inserted into one side of the rectangular housing 314. The air inlet channel 31 is connected to the interior of the filter cylinder 33, and the exhaust channel 32 is connected to the interior of the rectangular housing 314. Multiple filter holes 35 are opened on the upper part of the surface of the filter cylinder 33. A second conveyor roller 37 and a first conveyor roller 36 are arranged inside the rectangular housing 314. The two ends of the shaft of the first conveyor roller 36 are respectively inserted into the rotating holes opened on both sides of the rectangular housing 314. A motor 38 is installed on one side of the rectangular housing 314. The end of the output shaft of the motor 38 is fixedly connected to one end of the shaft of the first conveyor roller 36. The filter belt 34 is attached to the surface of the first conveyor roller 36 and the second conveyor roller 37.

[0038] The rectangular housing 314 has an upper sealing plate 39 and a lower sealing plate 310 fixedly connected inside. The filter belt 34 is located in the sealing grooves opened on the surfaces of the upper sealing plate 39 and the lower sealing plate 310. A sealing gasket is provided in the sealing grooves opened inside the upper sealing plate 39 and the lower sealing plate 310 to seal the filter belt 34 with the upper sealing plate 39 and the lower sealing plate 310. The bottom of the rectangular housing 314 has a conical hopper 311 fixedly connected. A guide pipe 312 is inserted into the bottom of the conical hopper 311. A valve 313 is installed at the other end of the guide pipe 312.

[0039] A deoxygenation assembly 4 is installed above the U-shaped support plate 2. The deoxygenation assembly 4 is used to dry the cleaned filter belt 34 with nitrogen. The deoxygenation assembly 4 includes a circular shell 41, filter screen 1 42, copper-based deoxidizer 43, filter screen 2 44, 3A molecular sieve 45, hollow cylinder 46, connecting pipe 47, air inlet pipe 48, one-way valve 49, automatic air replenishment valve 410, pressure sensor 411, fan 412, air inlet pipe 413, conveying air pipe 414, spring tube 415, and tee pipe 1 4. 16. Side plate 417, air guide nozzle 418, connecting rod 419, rectangular frame 420, L-shaped rod 421, lever 422, inner slot 423, U-shaped frame 424, roller 425, first spring 426, and rubber sleeve 427. A hollow cylinder 46 is fixedly connected inside the circular shell 41. The hollow cylinder 46 contains a copper-based deoxidizer 43 and a 3A molecular sieve 45. The 3A molecular sieve 45 is used to remove moisture from the gas, and the copper-based deoxidizer 43 is used to remove oxygen from the gas. The rectangular frame 420, L-shaped rod 421, lever 422, inner slot 423, U-shaped frame 424, roller 425, first spring 426, and rubber sleeve 427. The housing 314 has two symmetrically arranged air guide nozzles 418 inside, which are used to blow nitrogen gas at an angle toward the filter belt 34. A circular housing 41 is fixedly connected to a circular groove on the upper surface of the base 1. A hollow cylinder 46 is fixedly connected to a mounting hole at the bottom of the circular housing 41. Two filter screens 42 are fixedly connected inside the hollow cylinder 46. A copper-based deoxidizer 43 and a 3A molecular sieve 45 are disposed between the two filter screens 42. The copper-based deoxidizer 43 is located in... Above the 3A molecular sieve 45, between the copper-based deoxidizer 43 and the 3A molecular sieve 45, a filter screen 44 is provided. The filter screen 44 is fixedly connected to the inside of the hollow cylinder 46. The top of the hollow cylinder 46 is connected to the inside of the circular shell 41. The bottom end of the hollow cylinder 46 is fixedly connected to a connecting pipe 47. The other end of the connecting pipe 47 is inserted into the air inlet hole opened on the surface of the rectangular shell 314. The end of the connecting pipe 47 connected to the rectangular shell 314 is located between the upper sealing plate 39 and the lower sealing plate 310.

[0040] A fan 412 is installed on one side of a rectangular shell 314. An air inlet pipe 413 is fixedly connected to the air inlet end of the fan 412, and a delivery pipe 414 is fixedly connected to the air outlet end of the fan 412. The other end of the air inlet pipe 413 is inserted into the surface of a circular shell 41. An electric heating wire is installed inside the air inlet pipe 413 and communicates with the interior of the circular shell 41. The other end of the delivery pipe 414 is inserted into a circular groove on the surface of the rectangular shell 314. A three-way pipe 416 is fixedly connected to the end of the delivery pipe 414 inside the rectangular shell 314. A spring tube 415 is inserted into a circular hole 2 on the upper surface of each air guide nozzle 418. The other two ends of the three-way pipe 416 are fixedly connected to the spring tube 415 at corresponding positions. Two air guides... The nozzles 418 are fixedly connected between the two side plates 417. A connecting rod 419 is fixedly connected to the bottom surface of the side plate 417. The connecting rod 419 is inserted into the sealing groove opened on the upper surface of the lower sealing plate 310. The connecting rod 419 and the lower sealing plate 310 are in a sealed sliding connection. A rectangular frame 420 is fixedly connected to the bottom end of the connecting rod 419. An L-shaped rod 421 is fixedly connected to the bottom surface of the rectangular frame 420. Two symmetrically arranged levers 422 are fixedly connected to the surface of the conveyor roller 36 shaft. The two air guide nozzles 418 are located between the upper sealing plate 39 and the lower sealing plate 310. A rubber sleeve 427 is fixedly connected to the bottom surface of the upper sealing plate 39. The rubber sleeve 427 is located between the two air guide nozzles 418 and is fitted onto the surface of the filter belt 34.

[0041] The rectangular frame 420 is located on the side of the lower sealing plate 310 away from the upper sealing plate 39. A U-shaped frame 424 is inserted into the inner slot 423 inside the rectangular frame 420. A roller 425 is rotatably connected inside the U-shaped frame 424. A first spring 426 is fixedly connected to the side of the two U-shaped frames 424 that are away from each other. The two rollers 425 are respectively in contact with the filter belt 34. A pressure sensor 411 is installed inside the circular housing 41. An air inlet pipe 48 is inserted into the upper surface of the circular housing 41. A one-way valve 49 is installed inside the air inlet pipe 48. An automatic air replenishment valve 410 is installed at the end of the air inlet pipe 48 away from the circular housing 41.

[0042] The rectangular housing 314 houses a cleaning assembly 5, which causes the air guide nozzle 418 to reciprocate longitudinally as the filter belt 34 rotates. The cleaning assembly 5 includes a first brush roller 51, a second brush roller 52, a first synchronous pulley 53, a second synchronous pulley 54, a synchronous belt 55, a first gear 56, a second gear 57, a rectangular plate 58, a connecting plate 59, a second spring 510, a flat plate 511, a cylindrical sleeve 512, an inner rod 513, a counterweight ball 514, a sealing sleeve 515, a liquid storage tank 516, and a bent tube 517. The first brush roller 51 and the second brush roller 52 inside the rectangular housing 314 rotate automatically with the filter belt 34 to clean the oil stains in the filter belt 34. The two ends of the second conveyor roller 37 are respectively inserted into the rotating parts opened on the surfaces of the two rectangular plates 58. Inside the hole, two rectangular plates 58 are respectively located in square grooves opened inside the rectangular shell 314. The rectangular plates 58 and the rectangular shell 314 are slidably connected. A middle connecting plate 59 is fixedly connected between the two rectangular plates 58. A flat plate 511 is set below the middle connecting plate 59. Multiple springs 510 are fixedly connected between the middle connecting plate 59 and the flat plate 511. An inner rod 513 is fixedly connected to the bottom surface of the flat plate 511. A sealing sleeve 515 is fixedly sleeved on the surface of the inner rod 513. The sealing sleeve 515 is inserted into the inside of the cylindrical sleeve 512. The cylindrical sleeve 512 is inserted into the fixing hole opened on the surface of the conical bucket 311. The sealing sleeve 515 and the cylindrical sleeve 512 are slidably connected in a sealing manner. A counterweight ball 514 is fixedly connected to the bottom end of the inner rod 513. The counterweight ball 514 is located outside the conical bucket 311.

[0043] A brush roller 1 51 and a brush roller 2 52 are disposed between two rectangular plates 58. The two ends of the rotating shafts of brush roller 1 51 and brush roller 2 52 are respectively inserted into rotating grooves 2 opened on adjacent sides of the two rectangular plates 58. A synchronous wheel 2 54 is fixedly sleeved on one end of the rotating shaft of brush roller 2 52, and a gear 2 57 is fixedly sleeved on the other end of the rotating shaft. A gear 1 56 is meshed with the surface of gear 2 57. Gear 1 56 is fixedly sleeved on one end of the rotating shaft of brush roller 1 51. A synchronous pulley 53 is fixedly sleeved on one end of the shaft of the second feeding roller 37. A synchronous belt 55 is sleeved on the surface of the first synchronous pulley 53 and the second synchronous pulley 54. The second synchronous pulley 54 is connected to the first synchronous pulley 53 through the synchronous belt 55. The first brush roller 51 and the second brush roller 52 are located directly below the two air guide nozzles 418. The first brush roller 51 and the second brush roller 52 are in contact with the surface of the filter screen belt 34. The bristles on the surface of the first brush roller 51 and the second brush roller 52 are in contact with the filter screen belt 34.

[0044] A liquid storage tank 516 is fixedly connected in the groove 2 opened on the upper surface of the base 1. A bent tube 517 is fixedly inserted into the bottom end of the liquid storage tank 516. The other end of the bent tube 517 is inserted into the surface of the rectangular shell 314. The end of the bent tube 517 connected to the rectangular shell 314 is located below the lower sealing plate 310.

[0045] An oil removal assembly 6 is provided on the surface of the rectangular housing 314. The oil removal assembly 6 includes an inclined plate 61, an inclined plate 62, a three-way pipe 63, and a valve 64. Two symmetrically arranged inclined plates 61 are fixedly connected to the upper surface of the upper sealing plate 39. An inclined plate 62 is fixedly connected to the adjacent side of the two inclined plates 61. The adjacent side of the two inclined plates 62 is in contact with the surface of the filter belt 34. The two ends of the inclined plates 61 and 62 are in contact with the inner wall of the rectangular housing 314. A three-way pipe 63 is inserted into the two side flow holes opened on the surface of the rectangular housing 314. A valve 64 is installed at the other end of the three-way pipe 63. The end of the three-way pipe 63 located inside the rectangular housing 314 is located between the inclined plates 61 and 62.

[0046] Working principle: Hydrogen flows into the filter cylinder 33 from the inside of the inlet channel 31, passes through the filter holes 35 and the filter belt 34 on the surface of the filter cylinder 33, and flows out from the inside of the exhaust channel 32. Under the action of the filter belt 34, the oil in the hydrogen can be filtered. Connect the device to an external power source and start the motor 38 through the controller. The operation of the motor 38 drives the first conveyor roller 36 to rotate. The surfaces of the first conveyor roller 36 and the second conveyor roller 37 are provided with sharp blocks to prevent the first conveyor roller 36 and the second conveyor roller 37 from slipping on the surface of the filter belt 34. When the first conveyor roller 36 rotates, it drives the filter belt 34 to slide on the surface of the filter cylinder 33, thereby driving the second conveyor roller 37 to rotate synchronously. The rotation of the first conveyor roller 36 drives the filter belt 34 to slide on the surface of the filter cylinder 33. As the filter belt 34 continues to slide on the surface of the filter cylinder 33, the effect of filtering oil in the hydrogen can be guaranteed.

[0047] A cleaning fluid is provided below the lower sealing plate 310. This cleaning fluid is solvent-based and has a lower density than the oil. As the filter belt 34 rotates, the cleaning fluid mixes the oil on the filter belt 34 with the oil, causing the oil to settle at the bottom of the conical section of the conical hopper 311. The storage tank 516 contains the same type of cleaning fluid. The lower sealing plate 310 creates a sealed space between it and the conical hopper 311. Although the storage tank 516 contains cleaning fluid, the air pressure below the lower sealing plate 310 prevents the oil from settling. The cleaning fluid inside the storage tank 516 will not flow down the inside of the bent pipe 517 to the bottom of the lower sealing plate 310. By opening the valve 313, the oil sludge settled at the bottom of the conical bucket 311 can be discharged down the inside of the guide pipe 312, avoiding secondary contamination of the filter cloth. During the discharge of the oil sludge from the inside of the guide pipe 312, the cleaning fluid inside the storage tank 516 flows down the inside of the bent pipe 517 to the bottom of the lower sealing plate 310. Thus, during the discharge of the oil sludge, the cleaning fluid is automatically replenished, avoiding the problem of insufficient cleaning fluid due to the discharge of the cleaning fluid inside the rectangular shell 314, resulting in poor cleaning effect of the oil sludge adhering to the surface of the filter belt 34.

[0048] The heating wire installed inside the air inlet duct 413 is powered on, and the fan 412 is started by the controller. The operation of the fan 412 causes the gas inside the circular housing 41 to flow into the air delivery duct 414 along the inside of the air inlet duct 413. The gas passes through the three-way pipe 416 and flows from the inside of the two spring tubes 415 to the air guide nozzles 418 at the corresponding positions. There is a suitable angle between the air guide nozzles 418 and the filter belt 34. The gas flowing out of the air guide nozzles 418 blows onto the filter belt 34, and the gas is heated by the heating wire, which can quickly dry the filter belt 34. As the filter belt 34 continues to rotate, the dried part of the filter belt 34 can slide into the inside of the rubber sleeve 427 to prevent the moisture generated between the upper sealing plate 39 and the lower sealing plate 310 during the drying process from adhering to the dried filter belt 34.

[0049] As the gas continues to flow out along the inside of the air guide nozzle 418, the gas pressure between the upper sealing plate 39 and the lower sealing plate 310 increases, allowing the gas to flow along the inside of the connecting pipe 47 into the inside of the hollow cylinder 46, and from the inside of the hollow cylinder 46 into the inside of the circular shell 41, thus facilitating the recycling of the gas.

[0050] During the rotation of conveyor roller 36, the lever 422 rotates synchronously. When lever 422 is in contact with the bottom surface of L-shaped rod 421, its rotation causes L-shaped rod 421 to move upwards, allowing connecting rod 419 to slide inside lower sealing plate 310. This movement of connecting rod 419 causes rectangular frame 420 and side plate 417 to move upwards synchronously. The movement of side plate 417 causes two air guide nozzles 418 to move upwards synchronously. Furthermore, the rotation of conveyor roller 36 causes filter belt 34 to rotate. The distance is less than the rising distance of the air guide nozzle 418. When the lever 422 slides off the surface of the L-shaped rod 421, the air guide nozzle 418 can slowly descend under the gravity of the air guide nozzle 418 and the rectangular frame 420. When the air guide nozzle 418 descends to the appropriate position, the other lever 422 is in contact with the bottom of the L-shaped rod 421, which causes the conveying roller 36 to rotate once and the air guide nozzle 418 to move longitudinally back and forth twice. This allows nitrogen to be repeatedly and continuously blown onto the same area of ​​the filter belt 34 surface to ensure the drying effect of the filter belt 34 surface.

[0051] The rectangular frame 420 is symmetrically equipped with a first spring 426, a U-shaped frame 424 and rollers 425. Under the action of the first spring 426, the filter belt 34 can be squeezed by the two rollers 425. By squeezing the filter belt 34, the cleaning fluid on the filter belt 34 flows downward, reducing the amount of cleaning fluid carried by the filter belt 34 when it rotates. As the rectangular frame 420 moves longitudinally back and forth, it ensures the effect of squeezing the cleaning fluid in the filter belt 34 and avoids the problem of incomplete drying by nitrogen.

[0052] When conveyor roller 2 37 rotates, it drives synchronous pulley 1 53 to rotate synchronously. The rotation of synchronous pulley 1 53 drives synchronous pulley 2 54 to rotate via synchronous belt 55, which in turn drives brush roller 2 52 to rotate. The rotation of brush roller 2 52 drives gear 2 57 to rotate. The rotation of gear 2 57 drives gear 1 56 to rotate, which in turn allows brush roller 2 52 and brush roller 1 51 to rotate synchronously in opposite directions. The bristles on the surface of brush roller 1 51 and brush roller 2 52 are in contact with the filter screen belt 34. Both brush roller 1 51 and brush roller 2 52 are located in the cleaning liquid inside the rectangular housing 314. As brush roller 1 51 and brush roller 2 52 rotate, the oil stains filtered on the surface of the filter screen belt 34 can be effectively removed, thus ensuring the effect of the filter screen belt 34 in filtering oil stains in hydrogen after cleaning.

[0053] Under the influence of the counterweight ball 514, the inner rod 513 pulls the plate 511, which in turn pulls the spring 510, so that the connecting plate 59 always has a downward force. The connecting plate 59 pulls the conveyor roller 37 through the two rectangular plates 58, so that the filter belt 34 is always in a taut state, avoiding the problem that the filter belt 34 will become loose after long-term use, resulting in poor hydrogen purification effect. The two rectangular plates 58 are located in the square grooves opened inside the rectangular shell 314. Under the restriction of the two square grooves, the two rectangular plates 58 can only move longitudinally, thus ensuring the effect of the filter belt 34. Under the restriction of the sealing sleeve 515, the inner rod 513 and the cylindrical sleeve 512 are sealed and slidably connected to prevent the cleaning fluid inside the rectangular shell 314 from leaking.

[0054] Two inclined plates 62 have adjacent sides that are in contact with the surface of the filter belt 34, and the two ends of inclined plates 61 and 62 are respectively in contact with the inner wall of the rectangular housing 314. The inclined plates 62 in contact with the surface of the filter belt 34 can scrape off some of the oil on the filter belt 34. The oil flows along the surface of the inclined plates 62 to the space between the inclined plates 61 and 62 for storage, thereby reducing the amount of oil contamination on the cleaning fluid. Hydrogen flows from the inside of the air inlet channel 31 into the inside of the filter cylinder 33, passes through the filter holes 35 on the surface of the filter cylinder 33 and the filter belt 34 on the surface of the filter cylinder 33, and then from... The exhaust passage 32 flows out, and there is a suitable pressure above the upper sealing plate 39. The three-way pipe 63 can be made of glass. By observing the three-way pipe 63, when a suitable amount of oil is stored between the first inclined plate 61 and the second inclined plate 62, the oil between the first inclined plate 61 and the second inclined plate 62 can be allowed to flow out from the inside of the valve 64 by opening the valve. At this time, the external gas will not flow into the inside of the rectangular shell 314. By observing the oil condition inside the three-way pipe 63, when the oil inside the three-way pipe 63 is about to flow out, the valve 64 is closed to prevent the hydrogen inside the rectangular shell 314 from flowing out.

[0055] The circular housing 41 stores nitrogen gas. The end of the automatic gas replenishment valve 410 away from the inlet pipe 48 is connected to the output pipe of the PSA nitrogen generator. The pressure sensor 411 monitors the pressure inside the circular housing 41 in real time. When the pressure is lower than the set value of the pressure sensor 411, the front-end PSA nitrogen generator is automatically opened to replenish the nitrogen gas, ensuring a stable nitrogen supply. The core function of the automatic gas replenishment valve 410 is to open the channel to allow high-purity nitrogen gas generated by the external PSA nitrogen generator to be injected into the circular housing 41 when the pressure sensor 411 detects that the nitrogen pressure inside the circular housing 41 is insufficient. A pressure regulating valve is set between the automatic gas replenishment valve 410 and the PSA nitrogen generator to ensure the stability and safety of the replenishment. The one-way valve 49 can prevent the nitrogen gas inside the circular housing 41 from flowing back into the PSA nitrogen generator to avoid contaminating the nitrogen generation system. The pressure regulating valve reduces the output pressure of the PSA nitrogen generator to a pressure that is compatible with the circular housing 41, preventing high-pressure gas replenishment from damaging the circular housing 41 or the corresponding pipes.

[0056] A filter screen 44 is installed between the 3A molecular sieve 45 filled at the bottom of the hollow cylinder 46 and the copper-based deoxidizer 43 filled at the top. The filter screen 44 can effectively separate the two materials to avoid mixing and affecting the purification efficiency. At the same time, it guides the gas to pass evenly through the packing layer to prevent incomplete purification caused by short circuits and further ensures the purity of nitrogen. The gas passes through the 3A molecular sieve 45 from bottom to top to remove water, and then passes through the copper-based deoxidizer 43 to remove oxygen. The dual purification can achieve the standard simultaneously. The setting of two filter screens 42 can restrict the copper-based deoxidizer 43 and the 3A molecular sieve 45, thereby ensuring the effectiveness of the copper-based deoxidizer 43 and the 3A molecular sieve 45 in removing water and oxygen.

[0057] The end of the output shaft of motor 38 is connected to the rectangular housing 314 through a rotary seal ring to avoid gas leakage.

[0058] The 3A molecular sieve 45 has a microporous structure with a pore size of about 0.3 nm, which can only adsorb water molecules with a diameter of about 0.28 nm. Nitrogen molecules with a diameter of about 0.36 nm cannot enter the micropores. When nitrogen passes through from bottom to top, water molecules are firmly adsorbed inside the molecular sieve, which can reduce the nitrogen dew point to ≤-60℃. The dried nitrogen can also prevent moisture from affecting the stability of subsequent deoxygenation reactions. The dried nitrogen continues to pass upward through the copper-based deoxidizer 43. At room temperature, copper reacts with oxygen in the nitrogen to generate stable copper oxide 2Cu + O2 = 2CuO, reducing the oxygen content to ≤10ppm. This reaction does not require additional heating, which fits the "low energy consumption" design of the equipment. Finally, the output nitrogen meets the purity requirements.

[0059] Heated nitrogen can quickly replace the cleaning fluid on the surface and in the pores of the filter cloth, and nitrogen does not react with the cleaning fluid, which can prevent moisture residue from causing the filter to mold or become clogged. After drying, the moisture content of the filter belt 34 can be reduced to ≤0.5%, which meets the requirements for filter dryness in the subsequent hydrogen purification process.

[0060] The filter belt 34 is dried by heating with nitrogen. Nitrogen is an inert gas and will not carry oil or impurities to contaminate the filter like compressed air, nor will it oxidize the filter material. This extends the service life of the filter and avoids the effect of subsequent precision filtration due to residual impurities. In the hydrogen purification equipment, nitrogen drying can simultaneously remove the air around the filter, forming an inert atmosphere, which indirectly improves the safety of equipment operation and ensures explosion-proof and low-risk operation during the hydrogen purification process.

[0061] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen purification device for improving hydrogen adsorption, comprising a U-shaped support plate (2) and a base (1) fixedly connected to the upper surface of the U-shaped support plate (2), characterized in that: The upper surface of the base (1) is provided with a purification component (3). The purification component (3) includes a filter cylinder (33) fixedly connected inside the rectangular shell (314) and a filter mesh belt (34) sleeved on the surface of the filter cylinder (33). The filter mesh belt (34) is used to filter oil stains in hydrogen when it rotates in contact with the surface of the filter cylinder (33). A deoxygenation assembly (4) is provided above the U-shaped support plate (2). The deoxygenation assembly (4) is used to dry the cleaned filter belt (34) with nitrogen. The deoxygenation assembly (4) includes a hollow cylinder (46) fixedly connected inside the circular shell (41). The hollow cylinder (46) is provided with a copper-based deoxidizer (43) and a 3A molecular sieve (45). The 3A molecular sieve (45) is used to remove moisture from the gas, and the copper-based deoxidizer (43) is used to remove oxygen from the gas. The rectangular shell (314) is provided with two symmetrically arranged air guide nozzles (418). The air guide nozzles (418) are arranged to make nitrogen blow towards the filter belt (34) at an angle. The rectangular housing (314) is provided with a cleaning component (5). The cleaning component (5) is used to make the air guide nozzle (418) move longitudinally back and forth when the filter belt (34) rotates. The brush roller one (51) and brush roller two (52) provided inside the rectangular housing (314) rotate automatically with the rotation of the filter belt (34) to clean the oil stains in the filter belt (34). A rectangular shell (314) is fixedly connected to a groove on the upper surface of the base (1). An exhaust channel (32) is inserted into the upper surface of the rectangular shell (314). An air inlet channel (31) is inserted into one side of the rectangular shell (314). The air inlet channel (31) is connected to the interior of the filter cylinder (33). The exhaust channel (32) is connected to the interior of the rectangular shell (314). A plurality of filter holes (35) are opened on the upper part of the surface of the filter cylinder (33). A second conveyor roller (37) and a first conveyor roller (36) are arranged inside the rectangular shell (314). The two ends of the shaft of the first conveyor roller (36) are respectively inserted into the rotating holes opened on both sides of the rectangular shell (314). A motor (38) is installed on one side of the 14), and the end of the output shaft of the motor (38) is fixedly connected to one end of the shaft of the first conveyor roller (36). The filter belt (34) is attached to the surface of the first conveyor roller (36) and the second conveyor roller (37). A fan (412) is installed on one side of the rectangular shell (314). An air inlet pipe (413) is fixedly connected to the air inlet end of the fan (412), and a conveying air pipe (414) is fixedly connected to the exhaust end of the fan (412). The other end of the air inlet pipe (413) is inserted into the surface of the circular shell (41). An electric heating wire is installed inside the air inlet pipe (413) and communicates with the inside of the circular shell (41). The other end of the conveying air pipe (414) is inserted into the rectangular shell (314). A circular groove is opened on the surface of the rectangular shell (314), and one end of the conveying air duct (414) located inside the rectangular shell (314) is fixedly connected to a three-way pipe (416). A spring tube (415) is inserted into a circular hole opened on the upper surface of each air guide nozzle (418). The other two ends of the three-way pipe (416) are fixedly connected to the spring tube (415) at the corresponding positions. The two air guide nozzles (418) are fixedly connected between two side plates (417). A connecting rod (419) is fixedly connected to the bottom surface of the side plate (417). The connecting rod (419) is inserted into a sealing groove opened on the upper surface of the lower sealing plate (310). The connecting rod (419) and the lower sealing plate (310) are connected together. 0) Sealed sliding connection, the bottom end of the connecting rod (419) is fixedly connected to a rectangular frame (420), the bottom surface of the rectangular frame (420) is fixedly connected to an L-shaped rod (421), the surface of the conveying roller (36) shaft is fixedly connected to two symmetrically arranged levers (422), the two air guides (418) are located between the upper sealing plate (39) and the lower sealing plate (310), the bottom surface of the upper sealing plate (39) is fixedly connected to a rubber sleeve (427), the rubber sleeve (427) is located between the two air guides (418), the rubber sleeve (427) is fitted on the surface of the filter belt (34), the rectangular frame (420) is located on the side of the lower sealing plate (310) away from the upper sealing plate (39),A U-shaped frame (424) is inserted into the inner slot (423) inside the rectangular frame (420). A roller (425) is rotatably connected inside the U-shaped frame (424). A first spring (426) is fixedly connected to the two U-shaped frames (424) on their opposite sides. The two rollers (425) are respectively attached to the filter belt (34). A pressure sensor (411) is installed inside the circular housing (41). An air inlet pipe (48) is inserted into the upper surface of the circular housing (41). A one-way valve (49) is installed inside the air inlet pipe (48). An automatic air replenishment valve (410) is installed at the end of the air inlet pipe (48) away from the circular housing (41). The two ends of the conveyor roller (37) Two rectangular plates (58) are respectively inserted into the rotating holes on their surfaces. The two rectangular plates (58) are respectively located in the square grooves opened inside the rectangular shell (314). The rectangular plates (58) and the rectangular shell (314) are slidably connected. A middle connecting plate (59) is fixedly connected between the two rectangular plates (58). A flat plate (511) is provided below the middle connecting plate (59). Multiple springs (510) are fixedly connected between the middle connecting plate (59) and the flat plate (511). An inner rod (513) is fixedly connected to the bottom surface of the flat plate (511). A sealing sleeve (515) is fixedly fitted on the surface of the inner rod (513). The sealing sleeve (515) is inserted into the inside of the cylindrical sleeve (512). 2) Inserted into the fixing hole opened on the surface of the conical bucket (311), the sealing sleeve (515) and the cylindrical sleeve (512) are sealed and slidably connected, the bottom end of the inner rod (513) is fixedly connected to the counterweight ball (514), the counterweight ball (514) is located outside the conical bucket (311), and a brush roller one (51) and a brush roller two (52) are arranged between the two rectangular plates (58). The two ends of the rotating shafts of the brush roller one (51) and the brush roller two (52) are respectively inserted into the rotating groove two opened on the adjacent side of the two rectangular plates (58). One end of the rotating shaft of the brush roller two (52) is fixedly fitted with a synchronous wheel two (54), and the other end of the rotating shaft of the brush roller two (52) is fixedly fitted with a gear two (57). The surface of the conveyor roller 2 (37) is meshed with a gear 1 (56), which is fixedly sleeved on one end of the shaft of the brush roller 1 (51). A synchronous pulley 1 (53) is fixedly sleeved on one end of the shaft of the conveyor roller 2 (37). A synchronous belt (55) is sleeved on the surfaces of the synchronous pulley 1 (53) and the synchronous pulley 2 (54). The synchronous pulley 2 (54) is connected to the synchronous pulley 1 (53) via the synchronous belt (55). The brush roller 1 (51) and the brush roller 2 (52) are located directly below the two air guide nozzles (418). The brush roller 1 (51) and the brush roller 2 (52) are in contact with the surface of the filter screen belt (34), and the bristles on the surfaces of the brush roller 1 (51) and the brush roller 2 (52) are in contact with the filter screen belt (34).

2. The hydrogen purification equipment for improving hydrogen adsorption according to claim 1, characterized in that: The rectangular shell (314) is internally fixedly connected to an upper sealing plate (39) and a lower sealing plate (310). The filter belt (34) is located in the sealing grooves opened on the surfaces of the upper sealing plate (39) and the lower sealing plate (310). A sealing gasket is provided in the sealing grooves opened inside the upper sealing plate (39) and the lower sealing plate (310) to seal the filter belt (34) with the upper sealing plate (39) and the lower sealing plate (310). A conical bucket (311) is fixedly connected to the bottom of the rectangular shell (314). A guide pipe (312) is inserted into the bottom of the conical bucket (311). A valve (313) is installed at the other end of the guide pipe (312).

3. The hydrogen purification equipment for improving hydrogen adsorption according to claim 1, characterized in that: A circular shell (41) is fixedly connected to a circular groove on the upper surface of the base (1). A hollow cylinder (46) is fixedly connected to a mounting hole at the bottom of the circular shell (41). Two filter screens (42) are fixedly connected inside the hollow cylinder (46). A copper-based deoxidizer (43) and a 3A molecular sieve (45) are disposed between the two filter screens (42). The copper-based deoxidizer (43) is located above the 3A molecular sieve (45). A filter screen (44) is provided between the two parts. The filter screen (44) is fixedly connected to the inside of the hollow cylinder (46). The top of the hollow cylinder (46) is connected to the inside of the circular shell (41). A connecting pipe (47) is fixedly connected to the bottom of the hollow cylinder (46). The other end of the connecting pipe (47) is inserted into the air inlet hole opened on the surface of the rectangular shell (314). The end of the connecting pipe (47) connected to the rectangular shell (314) is located between the upper sealing plate (39) and the lower sealing plate (310).

4. The hydrogen purification equipment for improving hydrogen adsorption according to claim 1, characterized in that: A liquid storage tank (516) is fixedly connected in the groove 2 opened on the upper surface of the base (1). A bent tube (517) is fixedly inserted at the bottom end of the liquid storage tank (516). The other end of the bent tube (517) is inserted into the surface of the rectangular shell (314). The end of the bent tube (517) and the rectangular shell (314) is located below the lower sealing plate (310).

5. The hydrogen purification equipment for improving hydrogen adsorption according to claim 2, characterized in that: The surface of the rectangular shell (314) is provided with an oil removal assembly (6). The oil removal assembly (6) includes an inclined plate one (61), an inclined plate two (62), a three-way pipe two (63), and a valve two (64). The upper surface of the upper sealing plate (39) is fixedly connected to two symmetrically arranged inclined plates one (61). The two adjacent sides of the two inclined plates one (61) are respectively fixedly connected to the inclined plate two (62). The adjacent sides of the two inclined plates two (62) are respectively attached to the surface of the filter belt (34). The two ends of the inclined plates one (61) and two inclined plates two (62) are respectively attached to the inner wall of the rectangular shell (314). The two side flow holes opened on the surface of the rectangular shell (314) are provided with a three-way pipe two (63). The other end of the three-way pipe two (63) is installed with a valve two (64). The end of the three-way pipe two (63) located inside the rectangular shell (314) is located between the inclined plates one (61) and the inclined plates two (62).

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