Estimated Feeding Device

Abstract

A push-type feeding device includes a rotor extending in the longitudinal direction and a stator capable of accommodating the rotor; the stator includes a material buffer bin, a feed port for conveying materials to the material buffer bin, and a buffer bin discharge channel for discharging materials in the material buffer bin; the rotor includes a front shaft section arranged in the material buffer bin, and the front shaft section can perform orbital motion; a pusher is also arranged in the material buffer bin, and the pusher can push the materials in the material buffer bin to move when rotating; beneficial technical effect: since from the cross-section, there is an offset between the central axis of the offset channel and the central axis of the pusher, and the front shaft section is inserted in the offset channel, thus, the technical effect that the orbital motion of the front shaft section and the rotation of the pusher can be performed simultaneously is achieved with a simple structure, which is conducive to simplifying the structure of the push-type feeding device. In actual applications, it is possible to directly use the front shaft section to drive other shaft sections or other components of the rotor to perform orbital motion.

Description

Technical Field

[0001] The invention relates to the field of material conveying, and in particular to a push-type feeding device which utilizes a rotatable rotor to cooperate with a stator to push materials in the stator. Background Art

[0002] At present, there are many kinds of equipment that can be used for conveying materials, among which there is a kind of polymer material plasticizing and conveying equipment based on extensional rheology in the prior art. For example, the invention patent of Chinese patent application No. 200810026054.X, entitled "Polymer material plasticizing and conveying method and equipment based on extensional rheology", discloses an equipment with the following structure: a hollow stator with a cylindrical inner cavity, a cylindrical rotor placed in the inner cavity of the stator and eccentrically arranged with the stator, a plurality of blades evenly distributed along the circumferential direction of the rotor arranged in the radial rectangular cross-section through hole of the rotor, and a retaining plate arranged on both sides of the stator and installed concentrically with the stator are used to form a blade plasticizing and conveying unit. The inner surface of the stator, the outer surface of the rotor, the blades and the retaining plate enclose a space with a certain geometric shape. During the rotation of the rotor, a pair of blades on the diameter of the rotor reciprocate in the radial rectangular cross-section through hole of the rotor due to the outer top surface being constrained by the inner surface of the stator, so that the volume of the above-mentioned space changes periodically from small to large and then from large to small. When the volume of the space changes from small to large, the material is gradually taken in. When the volume of the space changes from large to small, the material is ground, compacted, and exhausted under the main effect of the positive stress. At the same time, it is melted and plasticized and discharged under the auxiliary effect of external heating from the stator, so that the material completes the plasticization and transportation process in a very short thermomechanical process. This blade plasticizing and conveying unit mainly uses the positive stress of the rotor to push the material when conveying the material, which can reduce the friction formed between the material and the rotor and stator, and effectively solve the problem of high energy consumption in the process of pushing the material. However, the problem that follows is that in the front section of the material transportation, if the hardness of the material is relatively large, when the volume of the space changes from large to small, the hard material will produce a radial force on the rotor, causing the rotor to deform radially, and when a large piece of hard material cannot completely enter the volume of the space, it will also cause the rotor to be stuck.

[0003] The inventors also found that a method for pushing materials with a centering spiral barrel has been proposed in the prior art. For example, the utility model with Chinese patent number 201120512782.9 and the name "Pump body with centering spiral barrel" discloses a device with the following structure: including a pump body and a transmission shaft, a stator and a rotor are arranged in the pump body, the rotor and the transmission shaft are connected by a connecting rod, the connecting rod is eccentrically connected to the rotor, a spiral barrel is sleeved on the connecting rod, blades are spirally wound on the spiral barrel, the spiral barrel is concentrically arranged with the transmission shaft and fixed to the connector connecting the connecting rod and the transmission shaft. In this way, the spiral barrel always rotates in a centering manner, the distance between the spiral barrel and the inner wall of the pump body is always the same, and different gaps can be set according to the material to form a large propulsion force. Summary of the invention

[0004] Further research on the technical solution disclosed in Patent 201120512782.9 revealed that in order to achieve the centring rotation of the spiral barrel and the eccentric rotation of the rotor located behind the spiral barrel, it is necessary to set a connecting structure between the connecting rod and the rotor to achieve an eccentric connection, which will undoubtedly complicate the structure of the pump body. It can be seen that this solution still has shortcomings. In view of this, in order to reduce the radial force of the rotor performing orbital motion, the present invention proposes a new type of push-type feeding device, comprising a rotor extending longitudinally and a stator capable of accommodating the rotor; characterized in that the stator comprises a material buffer bin, a feed port for conveying materials to the material buffer bin and a buffer bin discharge channel for discharging materials in the material buffer bin, the rotor comprises a front axle section arranged in the material buffer bin, and the front axle section can perform orbital motion; a pusher is also arranged in the material buffer bin, and the pusher can push the material in the material buffer bin to move when it rotates; the pusher has a longitudinally extending offset channel, and from a cross-section, there is an offset between the central axis of the offset channel and the central axis of the pusher, and the front axle section is inserted in the offset channel.

[0005] The material buffer bin is a space for caching materials entering the stator.

[0006] The front shaft section is a shaft section on the rotor arranged in the material buffer bin, and the front shaft section may be a partial shaft section of the rotor or the entire shaft section. In addition, the front shaft section can perform orbital motion, and the above feature defines that the central axis of the front shaft section performs a circular motion along a certain track around the central axis of the pusher.

[0007] The pusher can push the material in the material buffer bin to move when it rotates. The above characteristics define that the pusher is a device that pushes the material in the material buffer bin to move, for example, it can push the material in the material buffer bin toward the direction of the buffer bin discharge channel. In addition, when the pusher rotates, the pusher is self-rotating but not revolving, that is, the central axis of the pusher does not circulate around the central axis of the material buffer bin.

[0008] The longitudinal extension direction of the rotor is defined as the longitudinal direction. Unless otherwise specified, the "longitudinal direction" mentioned below has the same meaning. The longitudinal extension of the offset channel means that the longitudinal direction of the offset channel is also longitudinal, which is consistent with the longitudinal direction of the rotor, so that the front shaft section of the rotor can be inserted into the offset channel along the longitudinal direction.

[0009] Wherein, from the cross section, there is an offset between the central axis of the offset channel and the central axis of the pusher. The above feature defines that the offset channel is offset on the pusher, and its central axis does not overlap with the central axis of the pusher. In this way, during the self-rotation movement of the pusher, the central axis of the offset channel performs a circular motion around the central axis of the pusher along a certain track. In addition, the cross section is a cross section obtained by cutting a specific feature in a vertical longitudinal direction.

[0010] The front axle segment is inserted into the offset channel, so that the revolution of the front axle segment and the rotation of the pusher can be coordinated with each other, and the revolution of the front axle segment and the rotation of the pusher can be carried out simultaneously. In addition, in terms of driving mode, the pusher can be driven to rotate by the revolution of the front axle segment; or the pusher drives the front axle segment to revolve through its own rotation; or two driving devices are set, one of which drives the pusher to rotate and the other drives the front axle segment to revolve.

[0011] According to the above technical scheme, compared with the prior art, the beneficial technical effect of the present invention is that: since there is an offset between the central axis of the offset channel and the central axis of the pusher in cross section, the front shaft section is inserted in the offset channel, so that the technical effect that the revolution of the front shaft section and the rotation of the pusher can be carried out simultaneously is achieved with a simple structure, which is conducive to simplifying the structure of the push-type feeding device. In practical applications, it is possible to directly use the front shaft section to drive other shaft sections or other components of the rotor to perform revolution. In addition, since the pusher can rotate without following the front shaft section to perform revolution, in the same cross section, the cross-sectional area of ​​the material channel between the pusher and the side wall of the material buffer bin remains basically unchanged during the rotation of the pusher, which can reduce the radial extrusion force of the material in the material channel, thereby helping to reduce the radial reaction force of the material on the pusher, and further helping to reduce the radial force borne by the front shaft section and slow down the radial deformation of the front shaft section.

[0012] A further technical solution may be that a first spiral groove in a spiral shape is provided on the outer peripheral wall of the pusher, and the first spiral groove is used to push the material in the material buffer bin to move. According to the above technical solution, the inner cavity of the first spiral groove forms a continuous extension and front and rear communication. Screw conveyor channel , the material can be Screw conveyor aisle In addition, compared with the variable space proposed in Patent 200810026054.X, the spiral material conveying channel can continuously accommodate large pieces of hard materials, thereby reducing the phenomenon of materials getting stuck in the pusher.

[0013] In order to strengthen the squeezing effect of the pusher on the material during the pushing process, a further technical solution may be that the groove depth of the first spiral groove gradually decreases along the material conveying direction. In this way, the volume of the groove cavity of the first spiral groove will gradually decrease along the material conveying direction, so that the material in the first spiral groove can withstand the squeezing force that gradually increases during the conveying process, thereby gradually compressing and refining the volume of the material.

[0014] A further technical solution may be that the offset channel includes a sealing cavity, and a sealing mechanism is arranged in the sealing cavity, and the sealing mechanism is used to seal the space between the cavity side wall of the sealing cavity and the outer peripheral wall of the front shaft section. In this way, the sealing mechanism can prevent material particles from entering the space between the channel side wall of the offset channel and the outer peripheral wall of the front shaft section, or intercept material particles entering the space between the channel side wall of the offset channel and the outer peripheral wall of the front shaft section, and prevent them from continuing to crawl longitudinally to other functional modules, such as the driving device that drives the front shaft section or the pusher to act, thereby destroying the service life of the driving device.

[0015] A further technical solution may be that the sealing mechanism is a sealing sleeve, which is sleeved on the front shaft section. In this way, the sealing sleeve can support the front shaft section, and if the front shaft section also performs self-rotational motion, the sealing sleeve can also be used to improve the stability of the rotational motion of the front shaft section.

[0016] A further technical solution may be that the offset channel further comprises a bearing installation cavity, the bearing installation cavity and the sealing cavity are arranged longitudinally in front and rear, a first bearing is further arranged in the bearing installation cavity, and the front shaft section is sleeved on the first bearing. In this way, if the front shaft section also performs self-rotational motion, the first bearing can be used to improve the stability of the rotational motion of the front shaft section.

[0017] A further technical solution may be that the rotor further includes a neck portion, the neck portion is arranged in the longitudinal front of the front section of the shaft, the neck portion is used for transmission connection with the power drive mechanism, the bearing installation cavity and the sealing cavity are arranged close to the neck portion, and the sealing cavity is located at a position farther away from the neck portion relative to the bearing installation cavity. According to the above technical solution, the sealing mechanism arranged in the sealing cavity can intercept the material particles entering the space between the channel side wall of the sealing channel and the outer peripheral wall of the front shaft section from continuing to crawl forward longitudinally and adhere to the first bearing arranged in the bearing installation cavity and the driving device that drives the front shaft section to move, thereby destroying the service life of the first bearing and the driving device.

[0018] A further technical solution may also include a second bearing, and the pusher is rotatably arranged on the stator via the second bearing. In this way, the second bearing can improve the rotation stability of the pusher.

[0019] A further technical solution may also include a heating device, which can make the internal temperature of the cavity of the material buffer bin close to the discharge channel of the buffer bin higher than the internal temperature of the cavity of the material buffer bin away from the discharge channel of the buffer bin. According to the above technical solution, along the conveying direction of the material, the internal temperature of the material buffer bin will gradually increase, so that the material in the material buffer bin can be prevented from melting under the high temperature before conveying and slipping, thereby affecting the pushing, and on the way after conveying, the material in the material buffer bin can be subjected to high-temperature heating treatment.

[0020] A further technical solution may be that the stator further includes a material processing main bin with a discharge port, the material processing main bin is located downstream of the material buffer bin, the buffer bin discharge channel is connected to the material processing main bin, the discharge port is used to discharge the material in the material processing main bin, and the rotor further includes a rear axle section arranged in the material processing main bin, the rear axle section and the front axle section are an integral structure, a second spiral groove is arranged on the rear axle section, and the second spiral groove can push the material entering the material processing main bin to move. According to the above technical solution, firstly, the rear axle section and the front axle section are an integral structure, which simplifies the connection structure between the rear axle section and the front axle section, and the rear axle section can perform orbital motion with the front axle section. In addition, at the same cross-sectional position, the cross-sectional area of ​​the material channel formed between the rear axle section and the inner wall of the bin of the material processing main bin will change cyclically from small to large and then to small with the orbital motion of the rear axle section, so that the material can be transported in a positive displacement volume.

[0021] A further technical solution may be that the pitch of the first spiral groove is greater than the pitch of the second spiral groove. In this way, the first spiral groove can be used to roughly extrude and stretch the material, and then the second spiral groove can be used to finely extrude and stretch the material.

[0022] A further technical solution may be that, viewed from a cross section, the feed port extends vertically, and there is a distance between the central axis of the feed port and the central axis of the pusher. That is, viewed from a cross section, the feed port is offset to one side of the pusher, so that the materials entering the material buffer bin from the feed port can enter the same side of the pusher as much as possible, so that the materials just entering the material buffer bin can be processed uniformly and synchronously.

[0023] A further technical solution may be that the rotor also includes a journal portion, which is arranged longitudinally in front of the front section of the shaft, and also includes a power drive mechanism, which is transmission-connected to the journal portion so as to drive the front shaft section to rotate and revolve.

[0024] Since the present invention has the above characteristics and advantages, it can be applied to a push-type feeding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of a push-type feeding device using the technical solution of the present invention;

[0026] Figure 2 It is a front structural schematic diagram of a push-type feeding device using the technical solution of the present invention;

[0027] Figure 3 yes Figure 2 A schematic cross-sectional structure diagram in the AA direction in FIG. 1 , showing the cross-sectional structure of the push-type feeding device;

[0028] Figure 4 yes Figure 3 A schematic diagram of a cross-sectional structure in the BB direction, showing the cross-sectional structure of the feed port;

[0029] Figure 5 is a schematic cross-sectional structural diagram of the stator 200;

[0030] Figure 6 is a schematic diagram of the three-dimensional structure of the pusher 300;

[0031] Figure 7 is a schematic cross-sectional structural diagram of the pusher 300, showing the cross-sectional structure of the pusher 300;

[0032] Figure 8 yes Figure 7 A schematic diagram of the cross-sectional structure in the CC direction shows the cross-sectional structure of the pusher. DETAILED DESCRIPTION

[0033] The structure of the push-type feeding device using the technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0034] As attached Figures 1 to 8As shown, the push-type feeding device includes a rotor 100 extending in the longitudinal direction and a stator 200 capable of accommodating the rotor 100, and the stator 200 includes a material buffer bin 210, a feed port 212 for conveying materials to the material buffer bin 210, and a buffer bin discharge channel 211 for discharging materials in the material buffer bin 210. The rotor 100 includes a front shaft section 120 arranged in the material buffer bin 210, and the front shaft section 120 can perform orbital motion. A pusher 300 is also arranged in the material buffer bin 210, and the pusher 300 can push the materials in the material buffer bin 210 to move when rotating. The pusher 300 has a longitudinally extending offset channel 30. From a cross-section, there is an offset distance e between the central axis a of the offset channel 30 and the central axis b of the pusher 300, and the front shaft section 120 is inserted in the offset channel 30.

[0035] The above technical solution will be further described below in conjunction with the accompanying drawings. Figure 3 and Figure 5 As shown, the stator 200 extends longitudinally, and includes a material buffer bin 210 arranged in front and rear, and a material processing main bin 220 having a discharge port 221, wherein the material processing main bin 220 is located downstream of the material buffer bin 210, and the discharge port 221 is used to discharge the material in the material processing main bin 220. A buffer bin discharge channel 211 is provided between the material buffer bin 210 and the material processing main bin 220, and the material buffer bin 210 is connected to the material processing main bin 220 through the buffer bin discharge channel 211. The stator 200 also includes a feed port 212 for conveying materials to the material buffer bin 210 inside the stator 200. The rotor 100 extends longitudinally and is accommodated in the material buffer bin 210 and the material processing main bin 220 of the stator 200.

[0036] The rotor 100 includes a front shaft section 120 arranged in the material buffer bin 210 and a rear shaft section 110 arranged in the material processing main bin 220. The rear shaft section 110 and the front shaft section 120 are an integral structure. A second spiral groove 111 is provided on the rear shaft section 110. The second spiral groove 111 can push the material entering the material processing main bin 220 to move. The rotor 100 also includes a journal 130, which is arranged in the longitudinal front of the shaft front section 120, and a power drive mechanism 400. The power drive mechanism 400 is connected to the journal 130 in a transmission manner so as to drive the front shaft section 120 to rotate and revolve. When the front shaft section 120 revolves, the central axis c of the front shaft section 120 performs a circular motion along a certain track around the central axis b of the pusher 300.

[0037] like Figure 6 to Figure 8 As shown, a pusher 300 is also arranged in the material buffer bin 210. The pusher 300 has a longitudinally extending offset channel 30. There is an offset distance e between the central axis a of the offset channel 30 and the central axis b of the pusher 300. The front shaft section 120 is inserted in the offset channel 30. When the power drive mechanism 400 drives the front shaft section 120 to rotate and revolve, the front shaft section 120 of the revolving motion is used to drive the pusher 300 to rotate. When the pusher 300 rotates, the pusher 300 is self-rotating motion, but does not revolve, that is, the central axis b of the pusher 300 does not circulate around the central axis of the material buffer bin 210. In this way, the revolving motion of the front shaft section 120 and the rotation of the pusher 300 are coordinated with each other, and the revolving motion of the front shaft section 120 and the rotation of the pusher 300 can be carried out simultaneously. Of course, in other embodiments, the pusher 300 can also drive the front shaft section 120 to revolve by rotating itself; or two driving devices are set, one of which drives the pusher 300 to rotate, and the other drives the front shaft section 120 to revolve. According to the above technical solution, it can be found that the material entering from the feed port 212 is pushed by the rotating pusher 300, and on the same cross section, the cross-sectional area of ​​the material channel between the pusher 300 and the side wall of the material buffer bin 210 is basically maintained unchanged during the rotation of the pusher 300, which can reduce the radial extrusion force of the material in the material channel, thereby helping to reduce the radial reaction force of the material on the pusher 300, and further helping to reduce the radial force borne by the front shaft section 120, and slow down the radial deformation of the front shaft section 120.

[0038] like Figure 4 As shown, from the cross section, the feed port 212 extends vertically, and there is a spacing L between the central axis d of the feed port 212 and the central axis b of the pusher 300. That is, from the cross section, the feed port 212 is offset to one side of the pusher 300, so that the materials entering the material buffer bin 210 from the feed port 212 can enter the same side of the pusher 300 as much as possible, so that the materials just entering the material buffer bin 210 can be processed uniformly and synchronously.

[0039] like Figure 6 and Figure 7As shown, a first spiral groove 32 in a spiral shape is provided on the outer peripheral wall of the pusher 300, and the first spiral groove 32 is used to push the material in the material buffer bin 210 to move. In this way, the groove cavity 320 of the first spiral groove 32 forms a spiral material conveying channel that extends continuously and is connected to the front and rear, and the material entering the groove cavity 320 can be dragged by friction to spiral forward in the spiral material conveying channel. The rotation radius size of the first spiral groove 32 is equivalent to the inner diameter size of the front section bin inner wall 2101 of the material buffer bin 210, so that when the pusher 300 rotates, the groove top wall 321 of the first spiral groove 32 can scrape off the residual material adhering to the front section bin inner wall 2101, thereby reducing the residual material. Furthermore, the groove depth of the first spiral groove 32 gradually decreases along the material conveying direction. In this embodiment, the groove depth of the first spiral groove 32 gradually decreases from the head end to the tail end of the pusher 300. The beneficial effects are as follows: firstly, the groove depth of the first spiral groove 32 near the feed port 212 is relatively large, which is conducive to the continuous accommodating of large pieces of hard materials by the groove cavity 320, thereby reducing the occurrence of the phenomenon that the materials are stuck in the pusher 300. Secondly, the volume of the groove cavity 320 will gradually decrease along the conveying direction of the materials, so that the materials in the first spiral groove 32 can withstand the extrusion force that gradually increases from small to large during the conveying process, thereby gradually compressing and refining the volume of the materials. Furthermore, the groove pitch of the first spiral groove 32 is greater than the groove pitch of the second spiral groove 111 of the rear shaft section 110. In this way, the first spiral groove 32 can be used to perform rough extrusion and stretching of the materials, and then the second spiral groove 111 can be used to perform fine extrusion and stretching of the materials, thereby performing secondary extrusion and stretching of the materials.

[0040] like Figure 3 , Figure 6 and Figure 7As shown, a shovel-shaped scraper 31 is provided at the rear end of the pusher 300, and the scraper cavity 310 of the scraper 31 is connected to the groove cavity 320 of the first spiral groove 32 and the buffer bin discharge channel 211. The rear end bin inner wall 2102 of the material buffer bin 210 near the buffer bin discharge channel 211 is horn-shaped. When the pusher 300 rotates, the scraper 31 rotates with the pusher 300 and rotates against the rear end bin inner wall 2102, and scrapes off the material adhering to the rear end bin inner wall 2102 during the rotation and pushes the scraped material into the scraper cavity 310, so as to reduce the material from being agglomerated due to long-term adhesion to the rear end bin inner wall 2102, and ensure that the material in the material buffer bin 210 can be discharged smoothly. The scraped front material in the shoveling cavity 310 can be pushed by the rear material entering the shoveling cavity 310 from the groove cavity 320 of the first spiral groove 32 to move out of the shoveling cavity 310, and discharged through the buffer bin discharge channel 211 and enter the material processing main bin 220. In addition, since the shoveling cavity 310 of the scraping shovel 31 is connected to the first spiral groove 32, the material in the shoveling cavity 310 is pushed out of the shoveling cavity 310 by the rear material entering the shoveling cavity 310. Groove cavity 320 Therefore, even if the inner wall 2101 of the front bin is close to the top wall of the first spiral groove 32 or a very small gap is reserved between them, making it difficult for most materials to enter the gap between them, the materials in the first spiral groove 32 can still smoothly enter the shoveling cavity 310 of the scraper 32, so that the materials can be normally transported. Such a structure expands the application scope of the pusher 300. Furthermore, an inclined discharge inclined surface 311 is arranged on the bottom wall of the shoveling cavity 310, so that the materials entering the shoveling cavity 310 can be guided to leave the scraper 31. In this way, under the guidance of the discharge inclined surface 311, the materials entering the shoveling cavity 310 can smoothly leave the shoveling cavity 310, and it is not easy for a large amount of materials to remain in the shoveling cavity 310.

[0041] like Figure 3 and Figure 7As shown, the offset channel 30 includes a sealing cavity 301, in which a sealing mechanism 6 is arranged, and the sealing mechanism 6 is used to seal the space between the channel side wall of the offset channel 30 and the outer peripheral wall of the front shaft section 120. In this embodiment, the sealing mechanism 6 is a sealing sleeve, and the sealing sleeve is sleeved on the front shaft section 120. In this way, the sealing mechanism 6 can intercept the material particles entering the space between the channel side wall of the offset channel 30 and the outer peripheral wall of the front shaft section 120, and prevent them from continuing to crawl longitudinally to other functional modules such as the power drive mechanism 400 and destroying the service life of the power drive mechanism 400. The offset channel 30 also includes a bearing installation cavity 302, and the bearing installation cavity 302 and the sealing cavity 301 are arranged longitudinally in front and back, and the bearing installation cavity 302 and the sealing cavity 301 are arranged close to the shaft neck 130, and the sealing cavity 301 is located at a position farther away from the shaft neck 130 relative to the bearing installation cavity 302. A first bearing 7 is also provided in the bearing mounting cavity 302 , and the front axle 120 section is sleeved on the first bearing 7 . The first bearing 7 is utilized to reduce the friction resistance between the front axle section 120 and the offset channel 30 , thereby improving the stability of the rotational movement of the front axle section 120 .

[0042] like Figure 3 As shown, a second bearing 8 is further included, and the pusher 300 is rotatably arranged on the stator 200 through the second bearing 8. In this way, the second bearing 8 can improve the rotation stability of the pusher 300.

[0043] like Figure 3 As shown, a heating device 9 is also included, and the heating device 9 can make the internal temperature of the chamber of the material buffer bin 210 close to the buffer bin discharge channel 211 higher than the internal temperature of the chamber of the material buffer bin 210 away from the buffer bin discharge channel 211. Along the conveying direction of the material, the internal temperature of the material buffer bin 210 will gradually increase, so that the internal material of the material buffer bin 210 can be preheated and softened in the front section of the conveying channel, and in the rear section of the conveying channel, the material in the material buffer bin 210 can be heated at a higher temperature to reach a molten state.

Claims

1. A push-type feeding device, comprising a rotor extending in a longitudinal direction and a stator capable of accommodating the rotor; characterized in that: The stator includes a material buffer bin, a feed port for conveying materials to the material buffer bin, and a buffer bin discharge channel for discharging materials in the material buffer bin; the rotor includes a front shaft section arranged in the material buffer bin, and the front shaft section can perform orbital motion; a pusher is also arranged in the material buffer bin, and the pusher can push the materials in the material buffer bin to move when rotating; the pusher has a longitudinally extending offset channel, and from a cross-section, there is an offset between the central axis of the offset channel and the central axis of the pusher, and the front shaft section is inserted in the offset channel; A first spiral groove in a spiral shape is provided on the outer peripheral wall of the pusher, and the first spiral groove is used to push the material in the material buffer bin to move; The stator also includes a material processing main bin with a discharge port, the material processing main bin is located downstream of the material buffer bin, the buffer bin discharge channel is connected to the material processing main bin, the discharge port is used to discharge the material in the material processing main bin, the rotor also includes a rear shaft section arranged in the material processing main bin, the rear shaft section and the front shaft section are an integral structure, a second spiral groove is provided on the rear shaft section, and the second spiral groove can push the material entering the material processing main bin to move; The groove pitch of the first spiral groove is greater than the groove pitch of the second spiral groove.

2. The push-type feeding device according to claim 1, characterized in that: The groove depth of the first spiral groove gradually decreases along the conveying direction of the material.

3. The push-feeding device according to claim 1 or 2, characterized in that: The offset channel comprises a sealing cavity, in which a sealing mechanism is arranged, and the sealing mechanism is used to seal the space between the cavity side wall of the sealing cavity and the outer peripheral wall of the front shaft segment.

4. The push-feeding device according to claim 3, characterized in that: The sealing mechanism is a sealing sleeve, and the sealing sleeve is sleeved on the front shaft section.

5. The push-type feeding device according to claim 3, characterized in that: The offset channel further comprises a bearing installation cavity, which is arranged longitudinally in front of and behind the sealing cavity. A first bearing is also arranged in the bearing installation cavity, and the front shaft section is sleeved on the first bearing.

6. The push-feeding device according to claim 5, characterized in that: The rotor also includes a neck portion, which is arranged in the longitudinal front of the front shaft section. The neck portion is used for transmission connection with a power drive mechanism. The bearing mounting cavity and the sealing cavity are arranged close to the neck portion, and the sealing cavity is located at a position farther away from the neck portion relative to the bearing mounting cavity.

7. The push-feeding device according to claim 1 or 2, characterized in that: A second bearing is also included, and the pusher is rotatably arranged on the stator via the second bearing.

8. The push-feeding device according to claim 1 or 2, characterized in that: A heating device is also included, which can make the internal temperature of the warehouse cavity on the material cache warehouse close to the cache warehouse discharge channel higher than the internal temperature of the warehouse cavity on the material cache warehouse away from the cache warehouse discharge channel.

9. The push-feeding device according to claim 1 or 2, characterized in that: From the cross section, the feed port extends vertically, and there is a distance between the central axis of the feed port and the central axis of the pusher.

10. The push-feeding device according to claim 1 or 2, characterized in that: The rotor further includes a journal portion, which is arranged in the longitudinal front of the front shaft section, and a power drive mechanism, which is drivingly connected to the journal portion so as to drive the front shaft section to rotate and revolve.

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