Kneading apparatus

Abstract

Provided in the present application is a kneading apparatus (1000). A kneading cylinder (10) is provided with a stirring cavity (11). A mounting seat (20) is provided with a first mounting hole (211) and first through holes (212). A first rotating shaft (31) is arranged in the first mounting hole (211) and is provided with a second mounting hole (311), and the first rotating shaft (31) is provided with second through holes (312) in communication with the first mounting hole (211) and the second mounting hole (311). A second rotating shaft (32) is arranged in the second mounting hole (311). A first sealing member (41), the mounting seat (20), and the first rotating shaft (31) form a first air channel. A second sealing member (42), the first rotating shaft (31), and the second rotating shaft (32) form a second air channel. An air supply apparatus supplies air to the first air channel and the second air channel, thereby preventing powder particles from entering the first air channel and the second air channel to damage the mounting seat (20), the first rotating shaft (31) and the second rotating shaft (32).

Description

Kneading equipment Technical Field

[0001] The present application relates to the technical field of kneading equipment, and in particular to a kneading equipment. Background Art

[0002] In existing kneading equipment, the rotating shaft and the shaft seal seat are sealed by a contact sealing ring. The powder particles in the stirring chamber can easily enter the gap between the shaft seal seat and the rotating shaft. The powder particles can easily cause wear of the sealing ring and the rotating shaft, resulting in failure of the seal between the rotating shaft and the shaft seal seat.

[0003] Summary of the Invention

[0004] The present application provides a kneading device to solve the problem that powder particles easily enter the gap between the shaft seal seat and the rotating shaft.

[0005] In a first aspect, the present application provides a kneading device, comprising a kneading cylinder, a mounting base, a first rotating shaft, a second rotating shaft, a first sealing member, and a second sealing member. A stirring chamber is provided within the kneading cylinder. The mounting base is connected to the kneading cylinder and defines a first mounting hole communicating with the stirring chamber. A first through-hole communicating with the first mounting hole is defined on a sidewall of the mounting base. The first rotating shaft rotatably extends through the first mounting hole and defines a second mounting hole communicating with the stirring chamber. A second through-hole communicating with the first and second mounting holes is defined on a sidewall of the first rotating shaft. The second rotating shaft rotatably extends through the second mounting hole and is coaxially disposed with the first rotating shaft. The first sealing member is disposed between the first rotating shaft and the mounting base and is located on the side of the first and second through-holes facing away from the stirring chamber. The first sealing member, the mounting base, and the first rotating shaft form a first air passage connecting the first through-hole and the stirring chamber. The second sealing member is sealingly connected between the second rotating shaft and the first rotating shaft and is located on the side of the second through-hole facing away from the stirring chamber. The second sealing member, the first rotating shaft and the second rotating shaft form a second air passage communicating with the second through hole and the stirring chamber.

[0006] In some embodiments, the first through hole extends from a side of the mounting base away from the first rotating shaft toward a direction close to the first rotating shaft, and is tilted toward the stirring chamber.

[0007] In some embodiments, the second through holes are provided in plurality, and the plurality of second through holes are arranged at intervals in the circumferential direction around the first rotating shaft.

[0008] In some embodiments, the kneading device further includes a first labyrinth member disposed between the mounting seat and the first rotating shaft, the first labyrinth member being disposed around the first rotating shaft and spaced apart from the first rotating shaft or the mounting seat to form a first gap connected to the first air duct, and the first labyrinth member being provided with at least one first annular groove on a side facing the first gap.

[0009] In some embodiments, the first rotating shaft includes a first shaft body and a first bushing sleeved on the first shaft body, and the first labyrinth piece and the first bushing are spaced apart to form the first gap.

[0010] In some embodiments, the first bushing includes a first segment and a second segment, the first segment is connected to a side of the second segment away from the stirring chamber, and a diameter of the first segment is larger than a diameter of the second segment.

[0011] In some embodiments, the second through hole is opened at an end of the second segment close to the first segment.

[0012] In some embodiments, the kneading device further includes a second labyrinth member disposed between the first rotating shaft and the second rotating shaft, the second labyrinth member being disposed around the second rotating shaft and spaced apart from the first rotating shaft or the second rotating shaft to form a second gap connected to the second air duct, and the second labyrinth member being provided with at least one second annular groove on a side facing the second gap.

[0013] In some embodiments, the second rotating shaft includes a second shaft body and a second bushing sleeved on the second shaft body, and the second labyrinth piece and the second bushing are spaced apart to form the second gap.

[0014] In some embodiments, a guide surface is provided on a side of the first labyrinth and the second labyrinth away from the stirring chamber.

[0015] In the kneading device provided in the present application, a first through hole connecting to the first mounting cavity is opened on the side wall of the mounting seat, and a second through hole connecting to the first mounting hole and the second mounting hole is opened on the side wall of the first rotating shaft. The first seal, the mounting seat and the first rotating shaft form a first air channel connecting the first through hole and the stirring chamber, and the second seal, the first rotating shaft and the second rotating shaft form a second air channel connecting the second through hole and the stirring chamber. The air supply device can supply air to the first air channel through the first through hole. After the gas enters the first air channel, part of the gas enters the stirring chamber through the gap between the first rotating shaft and the mounting seat, and the other part of the gas enters the second air channel through the second through hole, and enters the stirring chamber through the gap between the first rotating shaft and the second rotating shaft. The powder particles in the stirring chamber are blocked by the airflow and will find it difficult to enter the first air channel and the second air channel, thereby preventing the powder particles from entering the position between the first rotating shaft and the mounting seat, and the position between the second rotating shaft and the first rotating shaft, preventing the powder particles from damaging the mounting seat, the first rotating shaft and the second rotating shaft, and improving the service life of the coating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] FIG1 is a cross-sectional view of a kneading device provided in an embodiment of the present application.

[0018] FIG2 is an enlarged view of point I in FIG1 .

[0019] FIG3 is a cross-sectional view of the kneading device provided in an embodiment of the present application with some structures removed.

[0020] FIG4 is an enlarged view of point II in FIG3 .

[0021] FIG5 is a structural block diagram of a kneading system provided in an embodiment of the present application.

[0022] Description of the main reference numerals: kneading device 1000; kneading cylinder 10; stirring chamber 11; first stirring paddle 121; second stirring paddle 122; mounting base 20; first mounting hole 211; first through hole 212; air pipe 22; fixing base 23; first rotating shaft 31; second mounting hole 311; second through hole 312; first shaft body 33; first part 33a; second part 33b; first bushing 331; first segment 3311; second segment 3312; third bushing 332; first bearing 333; first bearing 334; first bearing 335; first bearing 336; first bearing 337; first bearing 338; first bearing 339; first bearing 331; first bearing ...3; first bearing 334; first bearing 335; first bearing 336; first bearing 337; first bearing 338; first bearing 339; first bearing 331; first bearing 332; first bearing 333; first bearing 333; first bearing 334; first bearing 3 A connecting member 334; a first tensioning member 335; a first tensioning member 3351; a first matching member 3352; a second rotating shaft 32; a second shaft body 34; a second bushing 341; a second bearing 342; a second connecting member 343; a second tensioning member 344; a second tensioning member 3441; a second matching member 3442; a first sealing member 41; a second sealing member 42; a first labyrinth member 51; a first gap 501; a first annular groove 511; a second labyrinth member 52; a second gap 502; and a second annular groove 521.

[0023] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

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

[0025] References herein to "embodiments" or "implementations" mean that a particular feature, structure, or characteristic described in connection with the embodiments or implementations may be included in at least one embodiment of the present application. The appearance of such phrases in various places in the specification does not necessarily refer to the same embodiment, nor do they constitute independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] It should be noted that the terms in the specification and claims of this application and the accompanying drawings are intended only to describe specific embodiments and are not intended to limit this application. The terms "first," "second," and so on in the specification and claims of this application and the accompanying drawings are used to distinguish different objects, not to describe a specific order. The term "and / or" as used in the specification and claims of this application refers to any and all possible combinations of one or more of the associated listed items, including and including these combinations.

[0027] Please refer to Figures 1 and 2 together. Figure 1 is a cross-sectional view of a kneading device 1000 provided in an embodiment of the present application; Figure 2 is an enlarged view of point I in Figure 1; Figure 3 is a cross-sectional view of the kneading device 1000 provided in an embodiment of the present application with some structures removed; and Figure 4 is an enlarged view of point II in Figure 3. The kneading device 1000 includes a kneading cylinder 10, a mounting base 20, a first rotating shaft 31, a second rotating shaft 32, a first sealing member 41, and a second sealing member 42. A stirring chamber 11 for accommodating the material to be stirred is provided in the kneading cylinder 10. The mounting base 20 is fixedly connected to the kneading cylinder 10 and is provided with a first mounting hole 211 for communicating with the stirring chamber 11. A first through hole 212 communicating with the first mounting hole 211 is provided on the side wall of the mounting base 20. The first rotating shaft 31 is rotatably inserted into the first mounting hole 211. The first rotating shaft 31 is provided with a second mounting hole 311 in the axial direction for communicating with the stirring chamber 11. A second through hole 312 is provided on the side wall of the first rotating shaft 31, connecting the first mounting hole 211 and the second mounting hole 311. The second rotating shaft 32 is rotatably inserted into the second mounting hole 311 and is coaxially arranged with the first rotating shaft 31. The first sealing member 41 is arranged between the first rotating shaft 31 and the mounting seat 20, and is located on the side of the first through hole 212 and the second through hole 312 away from the stirring chamber 11. The first sealing member 41, the mounting seat 20 and the first rotating shaft 31 form a first air passage connecting the first through hole 212 and the stirring chamber 11. The second sealing member 42 is sealingly connected between the second rotating shaft 32 and the first rotating shaft 31, and is located on the side of the second through hole 312 away from the stirring chamber 11. The second sealing member 42, the first rotating shaft 31 and the second rotating shaft 32 form a second air passage connecting the second through hole 312 and the stirring chamber 11. The first seal 41 and the second seal 42 can be set in multiple numbers, and the multiple first seals 41 and the multiple seals 42 are arranged along the axial direction of the first rotating shaft 31 to increase the sealing between the mounting seat 20 and the first rotating shaft 31, allowing the gas to flow into the first air channel, and increase the sealing between the first rotating shaft 31 and the second rotating shaft 32, allowing the gas to flow into the second air channel.

[0028] Referring to Figure 5, the present application also provides a kneading system. The kneading system includes an air supply device 71, an air suction device 72 and a kneading device 1000. The air supply device 71 is used to supply air to the kneading device 1000 to transport gas to the stirring chamber 11 through the first air channel and the second air channel, so that an airtight connection is formed between the mounting base 20 and the first rotating shaft 31, and between the first rotating shaft 31 and the second rotating shaft 32. The air suction device 72 is used to evacuate the kneading device 1000 to extract the gas in the stirring chamber 11 through the first air channel and the second air channel, thereby cleaning the first air channel and the second air channel. In some embodiments, the kneading system also includes a reversing valve 73 connected to the air supply device 71, the air suction device 72 and the kneading device 1000 respectively. The reversing valve 73 is used to switch the kneading device 1000 to be connected to the air supply device 71 or the air suction device 72. For example, the reversing valve 73 includes a first working position and a second working position. When the reversing valve 73 is in the first working position, the air supply device 71 is connected to the kneading device 1000. When the reversing valve 73 is in the second working position, the air suction device 72 is connected to the kneading device 1000.

[0029] In the kneading device 1000 of this embodiment, based on the first through hole 212 connected to the first mounting hole 211 on the side wall of the mounting base 20, and the second through hole 312 connected to the first mounting hole 211 and the second mounting hole 311 on the side wall of the first rotating shaft 31, the first sealing member 41, the mounting base 20 and the first rotating shaft 31 form a first air channel connected to the first through hole 212 and the stirring chamber 11, and the second sealing member 42, the first rotating shaft 31 and the second rotating shaft 32 form a second air channel connected to the second through hole 312 and the stirring chamber 11. The gas supply device 71 can supply gas to the first air channel through the first through hole 212. After the gas enters the first air channel, a Part of the gas enters the stirring chamber 11 through the gap between the first rotating shaft 31 and the mounting seat 20, and the other part of the gas enters the second air channel through the second through hole 312, and enters the stirring chamber 11 through the gap between the first rotating shaft 31 and the second rotating shaft 32. The powder particles in the stirring chamber 11 are blocked by the airflow and will find it difficult to enter the first air channel and the second air channel, thereby preventing the powder particles from entering the position between the first rotating shaft 31 and the mounting seat 20, and the position between the second rotating shaft 32 and the first rotating shaft 31, preventing the powder particles from damaging the mounting seat 20, the first rotating shaft 31 and the second rotating shaft 32, and improving the service life of the kneading device 1000.

[0030] Please refer to Figure 1. In this embodiment, the mounting base 20, the first rotating shaft 31 and the second rotating shaft 32 are arranged on the top of the kneading cylinder 10, that is, when the kneading device 1000 is placed on the ground, the mounting base 20, the first rotating shaft 31 and the second rotating shaft 32 are located on the side of the kneading cylinder 10 away from the ground.

[0031] The kneading apparatus 1000 also includes a first stirring paddle 121 and a second stirring paddle 122 disposed within the stirring chamber 11. The first stirring paddle 121 is connected to the first rotating shaft 31 and is driven by the first rotating shaft 31 to rotate and stir the material. The second stirring paddle 122 is connected to the second rotating shaft 32 and is driven by the second rotating shaft 32 to rotate and stir the material. The rotational speeds of the first rotating shaft 31 and the second rotating shaft 32 can be set to be different. For example, the rotational speed of the second rotating shaft 32 can be greater than the rotational speed of the first rotating shaft 31 to create a speed difference between the second stirring paddle 122 and the first stirring paddle 121, thereby better stirring the material, uniformly mixing the various components in the material, and improving stirring efficiency and stirring effect. The rotational directions of the first rotating shaft 31 and the second rotating shaft 32 can be the same or different. For example, the rotational direction of the first rotating shaft 31 and the rotational direction of the second rotating shaft 32 can be set to be different to uniformly mix the various components in the material, improving stirring efficiency and stirring effect. The first stirring paddle 121 can be configured as a wall scraping paddle, with the blades of the first stirring paddle 121 being in contact with the side walls of the stirring chamber 11 to prevent the material to be stirred from adhering to the walls of the stirring chamber 11. The second stirring paddle 122 is a dispersing paddle, which is provided with a dispersing column that can disperse the material to be stirred and refine it.

[0032] 2 , the kneading device 1000 further includes an air pipe 22. The air pipe 22 is used to connect the first through hole 212 to the air supply device 71. The first through hole 212 may be provided in plurality, and the plurality of first through holes 212 are spaced apart along the circumferential direction of the mounting base 20.

[0033] The first through hole 212 extends from the side of the mounting base 20 facing away from the first rotating shaft 31 toward the first rotating shaft 31 and is inclined toward the stirring chamber 11. The opening of the first through hole 212 on the side of the mounting base 20 facing the first rotating shaft 31 is closer to the stirring chamber 11 than the opening on the side of the mounting base 20 facing away from the first rotating shaft 31. The inclination of the first through hole 212 toward the stirring chamber 11 can reduce the curvature of the first air passage, reduce pressure loss of the gas when flowing through the first through hole 212, and increase the flow rate of the gas in the first air passage, thereby improving the airtight seal between the first rotating shaft 31 and the mounting base 20.

[0034] A plurality of second through holes 312 are provided, and the plurality of second through holes 312 are arranged at intervals around the circumference of the first rotating shaft 31. The plurality of second through holes 312 allows gas to enter the second airway from the first airway more quickly, thereby improving the airtight seal between the second rotating shaft 32 and the first rotating shaft 31. Exemplarily, the plurality of second through holes 312 are evenly spaced around the circumference of the first rotating shaft 31, allowing gas to enter the second airway evenly and better maintaining the spacing between the first rotating shaft 31 and the second rotating shaft 32.

[0035] The kneading device 1000 further includes a first labyrinth 51 disposed between the mounting base 20 and the first rotating shaft 31. The first labyrinth 51 is disposed around the first rotating shaft 31 and is spaced from the first rotating shaft 31 and / or the mounting base 20 to form a first gap 501 communicating with the first air passage.

[0036] For example, in this embodiment, the first labyrinth member 51 is independently disposed relative to the mounting base 20 and the first rotating shaft 31. That is, the first labyrinth member 51 is separately disposed from the mounting base 20 and the first rotating shaft 31 to facilitate installation and maintenance of the first labyrinth member 51. The first labyrinth member 51 is disposed on the side of the mounting base 20 facing the first rotating shaft 31, and the first labyrinth member 51 and the first rotating shaft 31 are separated to form a first gap 501. In some embodiments, the first labyrinth member 51 can also be disposed on the first rotating shaft 31. For example, the first labyrinth member 51 can be sleeved onto the outer wall of the first rotating shaft 31. The first labyrinth member 51 and the inner wall of the mounting base 20 are separated to form the first gap 501. In some embodiments, the first labyrinth member 51 can also be separately separated from the first rotating shaft 31 and the mounting base 20 to form the first gap 501. For example, the first labyrinth member 51 can be fixed to the mounting base 20 or the first rotating shaft 31 via other connecting members, and the first labyrinth member 51 and the mounting base 20 are separated to form the first gap 501.

[0037] The first labyrinth 51 has at least one first annular groove 511 on the side facing the first gap 501. Multiple first annular grooves 511 may be provided. These multiple first annular grooves 511 are spaced apart along the axial direction of the first rotating shaft 31. The first labyrinth 51 forms an expansion space between the first rotating shaft 31 and the location corresponding to the first annular groove 511. A gap, i.e., a throttle, is formed between the locations corresponding to two adjacent first annular grooves 511 and the first rotating shaft 31. When the gas supplied by the gas supply device 71 passes through the gap between the first labyrinth 51 and the first rotating shaft 31, the flow area decreases and the gas pressure increases. This gas maintains a gap between the first labyrinth 51 and the first rotating shaft 31, thereby forming a non-contact airtight seal and reducing or preventing wear between the first labyrinth 51 and the mounting base 20. After flowing through the gap and into the expansion space, the gas expands, reducing its pressure, decreasing its density, increasing its flow rate, and increasing its velocity, thereby effectively blowing any powder particles that accidentally enter the first air passage back into the mixing chamber 11. The multiple first annular grooves 511 can form multiple gaps and multiple expansion spaces between the first labyrinth 51 and the first rotating shaft 31, thereby increasing the flow rate of the gas after flowing through the first gap 501, and further preventing powder particles from entering the first air channel.

[0038] The first rotating shaft 31 includes a first shaft body 33 and a first bushing 331. The first bushing 331 is sleeved on the first shaft body 33. The second mounting hole 311 is formed on the first shaft body 33 and extends along the axial direction of the first shaft body 33. The first labyrinth 51 is spaced apart from the first bushing 331. The first bushing 331 includes a first segment 3311 and a second segment 3312. The first segment 3311 is connected to the side of the second segment 3312 facing away from the stirring chamber 11. The diameter of the first segment 3311 is larger than the diameter of the second segment 3312, and the gap between the first segment 3311 and the mounting base 20 is smaller than the gap between the second segment 3312 and the mounting base 20. The junction between the first segment 3311 and the second segment 3312 is located opposite the opening of the first through hole 212 on the side of the mounting base 20 facing the first rotating shaft 31, or is located on the side of the opening of the first through hole 212 on the side of the mounting base 20 facing the first rotating shaft 31 facing away from the stirring chamber 11. The first through hole 212, located on the side of the mounting base 20 facing the first rotating shaft 31, is positioned opposite the end of the second segment 3312 near the first segment 3311. The second through hole 312 is located at the end of the second segment 3312 near the first segment 3311 to facilitate gas flow into the second through hole 312. The first segment 3311 and the second segment 3312 transition from each other in an inclined plane or arc. The junction of the first segment 3311 and the second segment 3312 forms a guide portion to direct gas into the first gap 501 and the second through hole 312.

[0039] The kneading device 1000 further includes a second labyrinth 52 disposed between the first rotating shaft 31 and the second rotating shaft 32. The second labyrinth 52 surrounds the second rotating shaft 32 and is spaced from the first rotating shaft 31 and / or the second rotating shaft 32 to form a second gap 502 communicating with the second air passage.

[0040] For example, in this embodiment, the second labyrinth 52 is independently arranged relative to the first rotating shaft 31 and the second rotating shaft 32, that is, the second labyrinth 52 is separately arranged from the first rotating shaft 31 and the second rotating shaft 32, so as to facilitate the installation and maintenance of the second labyrinth 52. The second labyrinth 52 can be arranged on the first rotating shaft 31 and separated from the second rotating shaft 32 to form a second gap 502. When the gas enters the stirring chamber 11 from the second gap 502, it can also blow away the powder adhering to the outer wall of the second rotating shaft 32 to prevent excessive powder from adhering to the second rotating shaft 32, thereby making the various components of the material to be stirred in the stirring chamber 11 uniformly mixed according to a preset ratio, and reducing the climbing phenomenon of the material to be stirred, thereby preventing powder particles from entering the second gap 502. In some embodiments, the second labyrinth 52 can also be arranged on the second rotating shaft 32 and separated from the first rotating shaft 31 to form a second gap 502. In some embodiments, the second labyrinth 52 may be fixed relative to the first rotating shaft 31 or the second rotating shaft 32 via other connecting members, and form a second gap 502 with the first rotating shaft 31 and the second rotating shaft 32 respectively.

[0041] The second labyrinth 52 has at least one second annular groove 521 defined on the side facing the second gap 502. Multiple second annular grooves 521 may be provided. These multiple second annular grooves 521 are spaced apart along the axial direction of the first rotating shaft 31. The second labyrinth 52 forms an expansion space between the second rotating shaft 32 and the corresponding second annular groove 521. A gap, i.e., a throttle, is formed between the positions corresponding to two adjacent second annular grooves 521 and the second rotating shaft 32. When the gas supplied by the gas supply device 71 passes through the gap between the second labyrinth 52 and the second rotating shaft 32, the flow area decreases and the gas pressure increases. This creates a non-contact airtight seal between the second labyrinth 52 and the second rotating shaft 32, minimizing or preventing wear between the second labyrinth 52 and the second rotating shaft 32. After flowing through the gap and into the expansion space, the gas expands, reducing its pressure, decreasing its density, increasing its flow rate, and increasing its velocity, thereby effectively blowing any powder particles that accidentally enter the second air passage back into the mixing chamber 11. The multiple second annular grooves 521 can form multiple gaps and multiple expansion spaces between the second labyrinth 52 and the second rotating shaft 32, thereby increasing the flow rate of the gas after flowing through the second gap 502, and further preventing powder particles from entering the second air channel.

[0042] The second rotating shaft 32 includes a second shaft body 34 and a second bushing 341 sleeved on the second shaft body 34. The second bushing 341 protects the second shaft body 34 from wear, thereby improving the stability and service life of the second rotating shaft 32. If the second bushing 341 becomes excessively worn, it can be replaced, eliminating the need to replace the entire second rotating shaft 32 and reducing maintenance costs for the kneading apparatus 1000. A second seal 42 is disposed between the second bushing 341 and the first shaft body 33. Multiple second bushings 341 may be provided, arranged along the axial direction of the second shaft body 34.

[0043] The first rotating shaft 31 also includes a third bushing 332. The third bushing 332 is disposed on the inner wall of the first shaft body 33. The second labyrinth 52 is disposed on the third bushing 332 and located between the third bushing 332 and the second bushing 341. The third bushing 332 protects the inner wall of the first shaft body 33, preventing wear and tear on the first shaft body 33, thereby improving the stability and service life of the first rotating shaft 31.

[0044] A guide surface 53 is provided on the side of the first labyrinth 51 and / or the second labyrinth 52 away from the stirring chamber 11. In this embodiment, a guide surface 53 is provided on the side of the first labyrinth 51 and the second labyrinth 52 away from the stirring chamber 11 to guide the gas in the first air channel and the second air channel, reduce the pressure loss of the gas, allow the gas to better enter the first gap 501 and the second gap 502, and facilitate the installation of the first labyrinth 51 and the second labyrinth 52 with other structures. Among them, the first labyrinth 51 away from the end of the stirring chamber 11 and close to the first rotating shaft 31 can be provided with a chamfer, and the chamfered slope forms the guide surface 53. The second labyrinth 52 away from the end of the stirring chamber 11 and close to the second rotating shaft 32 can be provided with a chamfer, and the chamfered slope forms the guide surface 53. In some embodiments, a guide surface 53 is provided on the side of one of the first labyrinth 51 and the second labyrinth 52 away from the stirring chamber 11.

[0045] Referring to Figures 1 and 3 , the kneading apparatus 1000 further includes a fixed base 23 fixedly connected to the side of the mounting base 20 facing away from the stirring chamber 11. The fixed base 23 is a hollow structure, and a first rotating shaft 31 is disposed within the fixed base 23. The first shaft 33 includes a first portion 33a and a second portion 33b fixedly connected to the side of the first portion 33a facing away from the stirring chamber 11. The first portion 33a is positioned between the mounting base 20 and the second rotating shaft 32. The second portion 33b is positioned between the fixed base 23 and the second rotating shaft 32. A first bearing 333 is disposed between the second portion 33b and the fixed base 23. The first bearing 333 is used to limit the second portion 33b and enable the second portion 33b to rotate relative to the fixed base 23. A first seal 41 and a first labyrinth 51 are disposed between the first portion 33a and the mounting base 20, and a second seal 42 and a second labyrinth 52 are disposed between the second rotating shaft 32 and the first portion 33a.

[0046] A second bearing 342 is provided between the second portion 33b and the second rotating shaft 32. The second bearing 342 is used to limit the second rotating shaft 32 and enable the second rotating shaft 32 to rotate relative to the second portion 33b. The rotation speed of the second rotating shaft 32 can be greater than the rotation speed of the second portion 33b.

[0047] The first rotating shaft 31 also includes a first connector 334 disposed at the end of the second portion 33b away from the first portion 33a. The first connector 334 is in driving connection with a driver, which drives the second portion 33b and the first portion 33a to rotate relative to the mounting base 20 via the first connector 334. The first connector 334 is hollow, with the second portion 33b extending through the first connector 334. A first tensioning member 335 is disposed between the first connector 334 and the second portion 33b. The first tensioning member 335 abuts against the first connector 334 and the second portion 33b, respectively, securing the first connector 334 relative to the second portion 33b.

[0048] Specifically, the first tensioning component 335 includes a first tensioning member 3351 and a first mating member 3352. The first tensioning member 3351 has an inclined surface on one side facing the first mating member 3352, which is arranged at an angle to the axial direction of the first rotating shaft 31. The first mating member 3352 is provided with a mating surface that mates with the inclined surface. The first tensioning member 3355 also includes a first connecting bolt, which is used to apply pressure along the axial direction of the first rotating shaft 31 to the first tensioning member 3351 and the first mating member 3352. Under pressure, the first tensioning member 3351 tends to move along the axial direction of the first rotating shaft 31 relative to the first mating member 3352. Due to the interaction between the inclined surface and the mating surface, the first tensioning member 3351 tends to move along the radial direction of the first rotating shaft 31 relative to the first mating member 3352, thereby applying lateral pressure to the first connecting member 334 and the second portion 33b, thereby securing the first connecting member 334 relative to the second portion 33b. In some embodiments, the first connecting member 334 may also be fixedly connected to the second portion 33b by means of snap connection, welding, bonding, screw connection, etc.

[0049] The second rotating shaft 32 also includes a second connecting member 343 disposed at the end of the second shaft 34 away from the stirring chamber 11. The second connecting member 343 is configured for transmission connection with a driver, which drives the second shaft 34 to rotate via the second connecting member 343. The second connecting member 343 is constructed as a hollow structure, and the second rotating shaft 32 is disposed therein. A second tensioning member 344 is disposed between the second connecting member 343 and the second rotating shaft 32. The second tensioning member 344 abuts against the second connecting member 343 and the second rotating shaft 32, respectively, to secure the second connecting member 343 relative to the second rotating shaft 32.

[0050] Specifically, the second tensioning component 344 includes a second tensioning member 3441 and a second mating member 3442. The second tensioning member 3441 has an inclined surface on one side facing the second mating member 3442, which is arranged at an angle to the axial direction of the second rotating shaft 32. The second mating member 3442 is provided with a mating surface that mates with the inclined surface. The second tensioning member 3444 also includes a second connecting bolt, which is used to apply pressure along the axial direction of the second rotating shaft 32 to the second tensioning member 3441 and the second mating member 3442. Under pressure, the second tensioning member 3441 tends to move along the axial direction of the second rotating shaft 32 relative to the second mating member 3442. Due to the interaction between the inclined surface and the mating surface, the second tensioning member 3441 tends to move along the radial direction of the second rotating shaft 32 relative to the second mating member 3442, thereby applying lateral pressure to the second connecting member 343 and the second rotating shaft 32, thereby securing the second connecting member 343 relative to the second rotating shaft 32. In some embodiments, the second connecting member 343 may also be fixedly connected to the second rotating shaft 32 by means of clamping, welding, bonding, screwing, etc.

[0051] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0052] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A kneading device, characterized in that: include: A kneading cylinder, wherein a stirring chamber is provided in the kneading cylinder; A mounting seat connected to the kneading cylinder, the mounting seat is provided with a first mounting hole connected to the stirring chamber, and a first through hole connected to the first mounting hole is provided on a side wall of the mounting seat; A first rotating shaft is rotatably disposed in the first mounting hole, the first rotating shaft is provided with a second mounting hole connected to the stirring chamber, and a second through hole connected to the first mounting hole and the second mounting hole is provided on a side wall of the first rotating shaft; A second rotating shaft is rotatably disposed in the second mounting hole and is coaxially disposed with the first rotating shaft; A first sealing member is disposed between the first rotating shaft and the mounting seat and is located on a side of the first through hole and the second through hole away from the stirring chamber; the first sealing member, the mounting seat and the first rotating shaft form a first air passage connecting the first through hole and the stirring chamber; as well as The second sealing member is sealingly connected between the second rotating shaft and the first rotating shaft and is located on the side of the second through hole away from the stirring chamber; the second sealing member, the first rotating shaft and the second rotating shaft form a second air passage connecting the second through hole and the stirring chamber.

2. The kneading device according to claim 1, characterized in that The first through hole is extended from a side of the mounting base away from the first rotating shaft toward a direction close to the first rotating shaft, and is inclined toward the stirring chamber.

3. The kneading device according to claim 1, characterized in that The second through holes are provided in plurality, and the plurality of second through holes are arranged at intervals in the circumferential direction around the first rotating shaft.

4. The kneading device according to claim 1, characterized in that The kneading device also includes a first labyrinth member arranged between the mounting seat and the first rotating shaft, the first labyrinth member is arranged around the first rotating shaft, and is spaced from the first rotating shaft or the mounting seat to form a first gap connected to the first airway, and the first labyrinth member is provided with at least one first annular groove on one side facing the first gap.

5. The kneading device according to claim 4, characterized in that The first rotating shaft includes a first shaft body and a first bushing sleeved on the first shaft body, and the first labyrinth piece and the first bushing are spaced apart to form the first gap.

6. The kneading device according to claim 5, characterized in that The first bushing includes a first segment and a second segment, the first segment is connected to a side of the second segment away from the stirring chamber, and a diameter of the first segment is greater than a diameter of the second segment.

7. The kneading device according to claim 6, characterized in that The second through hole is opened at an end of the second segment close to the first segment.

8. The kneading device according to claim 4, characterized in that The kneading device also includes a second labyrinth piece arranged between the first rotating shaft and the second rotating shaft, the second labyrinth piece is arranged around the second rotating shaft, and is spaced from the first rotating shaft or the second rotating shaft to form a second gap connected to the second airway, and the second labyrinth piece is provided with at least one second annular groove on one side facing the second gap.

9. The kneading device according to claim 8, characterized in that The second rotating shaft includes a second shaft body and a second bushing sleeved on the second shaft body, and the second labyrinth piece and the second bushing are spaced apart to form the second gap.

10. The kneading device according to claim 8, characterized in that A guide surface is provided on one side of the first labyrinth member and the second labyrinth member away from the stirring chamber.

Images