Diffusion furnace air inlet pipe for solar cell processing

Abstract

The utility model belongs to the technical field of solar cell production, and particularly relates to a diffusion furnace air inlet pipe for solar cell processing, which comprises a diffusion furnace, an air inlet pipe body and an exhaust pipe are fixed on one side of the diffusion furnace, and a connecting outer cylinder is fixed outside a connecting inner cylinder. Inserting ports are formed between the two ends of the outer connecting cylinder and the two ends of the inner connecting cylinder respectively, one end of the air inlet pipe body is inserted into the inserting port in one side, and a conveying pipe is inserted into the other inserting port. Exhaust holes are formed in the circumferential wall of the air inlet pipe body; in order to prevent the air inlet pipe from being sealed, the multiple exhaust holes are formed in the outer surface of the air inlet pipe body, air can be fed through the multiple exhaust holes, air feeding is more homogeneous, meanwhile, the situation that a single opening is blocked is avoided, impurities accumulated on the inner wall of the air inlet pipe body can be cleared away by rotating the auger, and generated dirt is cleared away; and the air inlet effect can be better ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of solar cell production, in particular to an air inlet pipe of a diffusion furnace used for processing solar cells. Background Art

[0002] A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect.

[0003] In the existing public documents, there is a silicon wafer diffusion furnace for solar cells with announcement number CN 103556228 A, which can reduce production costs. The silicon wafer diffusion furnace for solar cells includes a furnace body with a furnace door, a quartz boat is provided in the furnace body, silicon wafers are placed on the quartz boat, an air inlet pipe and an exhaust pipe are provided on the furnace body, an exhaust fan is connected to the exhaust pipe, a switch device is provided on the furnace body, and the switch device includes a hanging support frame, a movable bracket and a first drive device are hung on the hanging support frame, when the furnace door is rotated, the required force is small, and the load borne by the second drive device is small, so that the second drive device is not easily damaged, and does not need to be frequently replaced, thereby reducing the cost required to purchase the second drive device, which can greatly reduce the production cost and is suitable for promotion and application in the field of solar cell silicon wafer processing equipment.

[0004] During the air intake process of the diffusion furnace, particulate matter in the gas is easy to accumulate at the mouth of the air intake pipe, which can easily cause blockage of the air intake pipe, affect the diffusion effect, and further affect the quality of the battery silicon wafer. Therefore, in order to solve the above problem, a diffusion furnace air intake pipe for solar cell processing is proposed. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art, the particulate matter in the gas is easily accumulated at the mouth of the intake pipe, which easily causes the blockage of the intake pipe, affects the diffusion effect, and further affects the quality of the battery silicon wafer. The utility model proposes an intake pipe for a diffusion furnace for solar cell processing, which intakes air through multiple exhaust holes, so that the intake air is more homogeneous and avoids the blockage of a single port.

[0006] The utility model solves the technical problem by adopting a technical solution which is an air inlet pipe of a diffusion furnace used for processing solar cells. The air inlet pipe comprises a diffusion furnace, and an air inlet pipe body and an exhaust pipe are fixed on one side of the diffusion furnace.

[0007] A connecting inner tube is fixed with a connecting outer tube on the outside of the connecting inner tube, and plug-in ports are formed between the two ends of the connecting outer tube and the connecting inner tube, wherein one end of the air inlet pipe body is plugged into the plug-in port on one side, and a delivery pipe is plugged into the other plug-in port.

[0008] An exhaust hole is provided on the circumferential wall of the air inlet pipe body.

[0009] A rotating rod is supported and fixed on one end of the connecting inner tube, a rotating auger is fixed on the outer side of the rotating rod, and the rotating auger is located inside the air inlet pipe body.

[0010] Preferably, a slag discharge port is provided at the bottom side of the end of the air intake pipe body, and an external thread is provided on the outer side of the other end of the air intake pipe body. A threaded sleeve is screwed on the external thread, a cloth bag is connected to the threaded sleeve, and the cloth bag cover is arranged on the outer side of the air intake pipe body.

[0011] Preferably, a fixing plate is fixed on the outer wall of the diffusion furnace, a driving motor is installed on the fixing plate, a gear is installed on the output shaft of the driving motor, a gear ring is provided on the outer side of the connecting outer cylinder, the gear ring and the gear are meshed with each other, and while air is being taken in, the driving motor operates to drive the gear to rotate, and with the cooperation of the gear ring, the combination of the connecting outer cylinder and the connecting inner cylinder can rotate, and while ensuring air intake, the rotating rod can be driven to rotate, and the impurities accumulated on the inner wall of the intake pipe body can be cleaned by rotating the auger, and the dirt generated by the cleaning can be discharged through the slag discharge port at the end of the intake pipe body.

[0012] Preferably, a fixed disk is fixed inside the conveying pipe, a push switch is fixed in the middle position of one side of the fixed disk, a spring is fixed to one side of the fixed disk, a windward cap is fixed to the other end of the spring, a pressing rod is fixed to one side of the windward cap, the pressing rod is arranged corresponding to the pressing direction of the press switch, the press switch is connected to a power supply, and the press switch is electrically connected to the gear. When air is taken in, the wind resistance on the windward cap becomes larger, so that the spring is pressed and contracted, and with the cooperation of the press rod, the press switch can be pressed. After the press switch is pressed, the gear is energized and turned on, driving the rotating component composed of a connected outer cylinder and a connected inner cylinder, so as to realize the driving of the internal rotating auger, thereby achieving the effect of cleaning the intake pipe body, and can better cooperate with the intake operation, while achieving the purpose of energy saving and emission reduction.

[0013] Preferably, the connecting inner cylinder has a hollow structure, and the two ends of the connecting inner cylinder are respectively connected to the air intake pipe body and the delivery pipe. Sealing rings are respectively provided on the outer wall of the connecting inner cylinder and the inner wall of the connecting outer cylinder. The internal rotating auger can be driven by a rotating component composed of the connecting outer cylinder and the connecting inner cylinder, thereby achieving the effect of cleaning the air intake pipe body.

[0014] The utility model is beneficial in that:

[0015] In order to avoid the closure of the intake pipe, a plurality of exhaust holes are opened on the outer surface of the intake pipe body, through which air can be taken in, the intake air is more homogeneous, and the blockage of a single port can be avoided. While taking in air, the driving motor operates to drive the gear to rotate, and with the cooperation of the ring gear, the combination of the outer cylinder and the inner cylinder can rotate, and the rotating rod can be driven to rotate while ensuring the air intake. By rotating the auger, the impurities accumulated on the inner wall of the intake pipe body can be cleaned, and the dirt generated by cleaning can better ensure the intake effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0017] Figure 1 It is a schematic diagram of the overall first-person perspective structure.

[0018] Figure 2 This is a schematic diagram of the installation position of the air intake structure.

[0019] Figure 3 This is a schematic diagram of the overall air intake structure.

[0020] Figure 4 Schematic diagram of the internal air intake structure.

[0021] Figure 5 It is a schematic diagram of the intake pipe body structure.

[0022] Figure 6 for Figure 4 Schematic diagram of the A area structure.

[0023] In the figure: 1. diffusion furnace, 2. connecting outer cylinder, 3. conveying pipe, 4. gear ring, 5. exhaust pipe, 6. driving motor, 7. fixing plate, 8. gear, 9. cloth bag, 10. threaded sleeve, 11. air inlet pipe body, 12. external thread, 13. connecting inner cylinder, 14. exhaust hole, 15. rotating rod, 16. rotating auger, 17. spring, 18. push switch, 19. fixing plate, 20. push rod, 21. windward cap. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5As shown, an air inlet pipe of a diffusion furnace used for processing solar cells comprises a diffusion furnace 1 , and an air inlet pipe body 11 and an exhaust pipe 5 are fixed to one side of the diffusion furnace 1 .

[0026] The connecting inner tube 13 has a connecting outer tube 2 fixed to its exterior, and plug-in ports are formed between the connecting outer tube 2 and both ends of the connecting inner tube 13, wherein one end of the air inlet pipe body 11 is plugged into the plug-in port on one side, and the delivery pipe 3 is plugged into the other plug-in port.

[0027] An exhaust hole 14 is formed on the circumferential wall of the air inlet pipe body 11 .

[0028] A rotating rod 15 is supported and fixed at one end of the connecting inner tube 13 , and a rotating auger 16 is fixed on the outer side of the rotating rod 15 . The rotating auger 16 is located inside the air intake pipe body 11 .

[0029] A slag discharge port is provided at the bottom side of the end of the air intake pipe body 11, and an external thread 12 is provided on the outer side of the other end of the air intake pipe body 11. A threaded sleeve 10 is screwed on the external thread 12, and a cloth bag 9 is connected to the threaded sleeve 10. The cloth bag 9 is covered on the outer side of the air intake pipe body 11.

[0030] A fixing plate 7 is fixed on the outer wall of the diffusion furnace 1, a driving motor 6 is installed on the fixing plate 7, a gear 8 is installed on the output shaft of the driving motor 6, a gear ring 4 is arranged on the outer side of the connecting outer cylinder 2, the gear ring 4 and the gear 8 are meshed with each other, when the diffusion furnace is taking in air, various particulate matter mixed in the gas is easy to accumulate at the pipe mouth of the intake pipe, which is easy to cause the intake pipe to be blocked, in order to avoid the closure of the intake pipe, a plurality of exhaust holes 14 are opened on the outer surface of the intake pipe body 11, and air can be taken in through the plurality of exhaust holes 14, the intake air is more homogeneous, and the blockage of a single port is avoided at the same time.

[0031] While air is being taken in, the driving motor 6 operates, driving the gear 8 to rotate. With the cooperation of the ring gear 4, the assembly connected to the outer cylinder 2 and the inner cylinder 13 can rotate, and the rotating rod 15 can be driven to rotate while ensuring air intake. By rotating the auger 16, the impurities accumulated on the inner wall of the intake pipe body 11 can be cleaned, and the dirt generated by cleaning can be discharged through the slag discharge port at the end of the intake pipe body 11, and the waste slag can be discharged into the cloth bag 9.

[0032] A detachable cloth bag 9 is mounted on the outside of the air intake pipe body 11, which can filter and purify the intake air and collect solid waste in the intake air, thereby better ensuring the intake effect.

[0033] The connecting inner tube 13 has a hollow structure, and the two ends of the connecting inner tube 13 are respectively connected to the air intake pipe body 11 and the delivery pipe 3. Sealing rings are respectively provided on the outer wall of the connecting inner tube 13 and the inner wall of the connecting outer tube 2. In order to ensure that the inner wall of the air intake pipe body 11 is cleaned during the air intake process, the internal rotating auger 16 can be driven by a rotating component composed of the connecting outer tube 2 and the connecting inner tube 13, thereby achieving the effect of cleaning the air intake pipe body 11.

[0034] See also Figure 6 As shown, a fixed plate 19 is fixed inside the conveying pipe 3, a push switch 18 is fixed at the middle position of one side of the fixed plate 19, a spring 17 is fixed to one side of the fixed plate 19, a windward cap 21 is fixed to the other end of the spring 17, a pressing rod 20 is fixed to one side of the windward cap 21, and the pressing rod 20 is set corresponding to the pressing direction of the press switch 18.

[0035] The push switch 18 is connected to a power source, and the push switch 18 is electrically connected to the gear 8. In order to better cooperate with the diffusion operation, when air is taken in, the wind resistance of the windward cap 21 becomes larger, and the spring 17 is pressed and contracted. With the cooperation of the push rod 20, the push switch 18 can be pressed. After the push switch 18 is pressed, the gear 8 is energized and turned on, driving the rotating component composed of the connected outer cylinder 2 and the connected inner cylinder 13, which can realize the driving of the internal rotating auger 16, thereby achieving the effect of cleaning the intake pipe body 11, which can better cooperate with the intake operation and achieve the purpose of energy saving and emission reduction.

[0036] In the description of this specification, the basic principles, main features and advantages of the utility model are shown and described above. For those skilled in the art, they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model shall fall within the scope of the utility model claimed for protection.

Claims

1. An air inlet pipe for a diffusion furnace used in processing solar cells, characterized in that: include: A diffusion furnace (1), wherein an air inlet pipe body (11) and an exhaust pipe (5) are fixed on one side of the diffusion furnace (1); A connecting inner cylinder (13), wherein a connecting outer cylinder (2) is fixed to the outside of the connecting inner cylinder (13), and plug-in ports are respectively formed between the two ends of the connecting outer cylinder (2) and the connecting inner cylinder (13), wherein one end of the air inlet pipe body (11) is plugged into the plug-in port on one side, and a delivery pipe (3) is plugged into the other plug-in port; An exhaust hole (14), wherein the exhaust hole (14) is provided on the circumferential wall of the air inlet pipe body (11); A rotating rod (15) is supported and fixed on one end of the connecting inner cylinder (13), a rotating auger (16) is fixed on the outer side of the rotating rod (15), and the rotating auger (16) is located inside the air intake pipe body (11).

2. The diffusion furnace air inlet pipe for solar cell processing according to claim 1, characterized in that: A slag discharge port is provided at the bottom side of the end of the air intake pipe body (11), and an external thread (12) is provided on the outer side of the other end of the air intake pipe body (11). A threaded sleeve (10) is screwed on the external thread (12), and a cloth bag (9) is connected to the threaded sleeve (10). The cloth bag (9) is covered on the outer side of the air intake pipe body (11).

3. The diffusion furnace air inlet pipe for solar cell processing according to claim 2, characterized in that: A fixing plate (7) is fixed on the outer wall of the diffusion furnace (1), a driving motor (6) is mounted on the fixing plate (7), a gear (8) is mounted on the output shaft of the driving motor (6), a gear ring (4) is arranged on the outer side of the connecting outer cylinder (2), and the gear ring (4) and the gear (8) are meshed with each other.

4. The diffusion furnace air inlet pipe for solar cell processing according to claim 3, characterized in that: A fixed disk (19) is fixed inside the conveying pipe (3), a push switch (18) is fixed at the middle position of one side of the fixed disk (19), a spring (17) is fixed to one side of the fixed disk (19), a windward cap (21) is fixed to the other end of the spring (17), a pressing rod (20) is fixed to one side of the windward cap (21), and the pressing rod (20) is arranged corresponding to the pressing direction of the push switch (18).

5. The diffusion furnace air inlet pipe for solar cell processing according to claim 4, characterized in that: The push switch (18) is connected to a power source, and the push switch (18) is electrically connected to the gear (8).

6. The diffusion furnace air inlet pipe for solar cell processing according to claim 4, characterized in that: The connecting inner tube (13) has a hollow structure, and the two ends of the connecting inner tube (13) are respectively connected to the air intake pipe body (11) and the delivery pipe (3), and sealing rings are respectively provided on the outer wall of the connecting inner tube (13) and the inner wall of the connecting outer tube (2).

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