Low-temperature extrusion device

Abstract

The utility model discloses a low temperature extrusion device relates to machinery technical field, including shell 1, shell 2 and feed pipe, shell 1 and shell 2 interiors respectively along respective length direction are equipped with rotating groove, shell 1 and shell 2 are both equipped with conveying mechanism, conveying mechanism includes: the rotating shaft, be horizontally provided in shell 1, be equipped with the rotating groove in shell 1, be equipped with the rotating groove in shell 2, be equipped with the rotating groove in shell 1, be equipped with the rotating groove in shell 2. The axial direction of the rotating shaft is consistent with the length direction of the shell I, the outer arc wall of the rotating shaft is sleeved with a conveying blade and a stirring blade, and the section of the conveying blade in the radial direction of the rotating shaft is spiral; according to the acorn extruding device, low-temperature nitrogen is injected into the second shell through the nitrogen making unit, due to the inertia and drying characteristics of the nitrogen, heat generated in the acorn extruding process can be effectively absorbed and taken away, direct cooling is achieved, acorns are prevented from going bad due to high temperature, and the nitrogen absorbing heat in the second shell returns into the first shell through the backflow pipe; and the preliminarily transported acorn is pre-cooled, so that the utilization rate of nitrogen is increased, the energy consumption is reduced, and meanwhile, the cyclic utilization of heat is realized.

Description

Low-temperature extrusion unit Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically to a low-temperature extrusion device. Background Technology

[0002] Acorns, also known as oak nuts or oak chestnuts, are the fruits of the oak tree. Rich in starch (55-60%), protein, and fat, they have a wide range of industrial uses, such as brewing, alcohol production, pastry making, tofu production, and animal feed. Their outer shells (rubber cups) can be processed into products like tannins and activated carbon, with broad applications.

[0003] In the traditional acorn material conveying and extrusion process, high temperatures are generated during material conveying and processing, which leads to a decline in material quality; it is impossible to achieve a low-temperature and efficient material conveying and extrusion environment. Summary of the Invention

[0004] The purpose of this invention is to provide a low-temperature extrusion device to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the low-temperature extrusion device provided by this utility model includes a housing 1, a housing 2, and a feeding pipe. Rotating grooves are respectively opened inside the housing 1 and housing 2 along their respective length directions. A conveying mechanism is provided inside both housing 1 and housing 2. The conveying mechanism includes: a rotating shaft, horizontally arranged inside housing 1, with its axial direction consistent with the length direction of housing 1; conveying blades and stirring blades are sleeved on the outer arc wall of the rotating shaft; the cross-section of the conveying blades along the radial direction of the rotating shaft is helical; the blades on the outer arc wall of the stirring blades can be spliced ​​together along the circumferential extension surface of the rotating shaft to form a complete helical surface; and the rotation directions of the conveying blades and the stirring blades are opposite. Four sliding grooves are arranged in a circular array about the axial direction of the rotating shaft on the inner arc wall of the rotating groove inside housing 1. A sealing mechanism is provided inside each sliding groove.

[0006] Furthermore, the same feeding pipe is fixed at one end of the housing 1 and the housing 2 that are close to each other. A pulley is fixed at the end of the rotating shaft in the housing 1 that is axially away from the feeding pipe. A motor is provided at the bottom of the housing 1. A pulley with the same structure is fixed at the output end of the motor. The same belt is sleeved in the groove of the two pulleys. A pulley is fixed at the end of the rotating shaft in the housing 2 that is axially close to the feeding pipe. An auger is provided in the feeding pipe. A feed hopper is fixed at the top of the housing 1 that is away from the feeding pipe. Sealing covers with the same structure are fixed at the end of the housing 1 that is close to the feeding pipe and the end of the housing 2 that is away from the feeding pipe. A storage channel is provided through the rotating shaft in the housing 2 and the pulley fixed coaxially with it along the axial direction.

[0007] Furthermore, a conveying pipe is rotatably installed on the placement channel on the pulley away from the opening of the housing two. A nitrogen generator is fixed to the end of the conveying pipe away from the pulley. A return pipe is fixed to the top of the housing two away from the feeding pipe. The return pipe is set towards the housing one. The end of the return pipe away from the housing two is fixed to the housing one and communicates with the interior of the housing one. The sealing mechanism in the slide groove one inside the housing one includes a sealing plate that slides on the inner side wall of the slide groove one. The length direction of the sealing plate is tangent to the circumference of the rotating groove, and the side wall of the sealing plate near the rotating groove is flush with the inner arc wall of the rotating groove. A nozzle is slidably connected in the slide groove one. The sealing plate and the nozzle are interlocked. A slider is fixed to the end of the nozzle away from the rotating groove. The slider slides on the inner wall of the slide groove one away from the rotating groove.

[0008] Furthermore, the slider of the nozzle away from the rotating groove has a threaded groove through the side wall along the axial direction of the rotating shaft. A reciprocating screw is threadedly connected in the threaded groove. The reciprocating screw is horizontally set, and a driven gear is fixed at one end of the reciprocating screw along its axial direction. The four driven gears are meshed with the same external gear ring on the side close to each other. The external gear ring is fixed on the outer arc wall of the rotating shaft. The external gear ring and the driven gears are both located inside the housing. The sealing plate has rotatably mounted traveling wheels on both sides of its length direction. A second sliding groove is opened on the inner side wall of the first sliding groove at the position corresponding to the traveling wheels. The cross section of the second sliding groove along the radial direction of the rotating shaft is "T" shaped. The traveling wheels slide in the second sliding groove. The nozzle near the rotating groove end has baffles with the same structure rotatably connected to both ends of the first sliding groove along its length direction. The baffles are flush with the opening of the first sliding groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. Low-temperature nitrogen is injected into the second shell through a nitrogen generator. Due to its inert and dry properties, nitrogen can effectively absorb and remove the heat generated during the acorn extrusion process, achieving direct cooling and preventing the acorns from deteriorating due to high temperature. The nitrogen that has absorbed heat in the second shell returns to the first shell through a return pipe to pre-cool the acorns during initial transportation, improving the utilization rate of nitrogen, reducing energy consumption, and realizing the recycling of heat.

[0011] 2. The unique design of the stirring blades, with their rotation direction opposite to that of the conveying blades, promotes the mixing of acorns within the shell, making the pre-cooling process more uniform. The outer arc wall blades of the stirring blades can be spliced ​​together along the circumferential extension surface of the rotating shaft to form a complete spiral surface, enhancing the stirring effect and improving cooling efficiency. A sealing mechanism prevents leakage and maintains a stable low-temperature environment. The sealing plate and the nozzle are interlocked, and the reciprocating motion of the nozzle is achieved by the reciprocating screw and external toothed ring, further improving the coverage area and cooling efficiency of nitrogen. Attached Figure Description

[0012] Figure 1 is a schematic diagram of the overall structure of the cryogenic extrusion device;

[0013] Figure 2 is a schematic diagram of the internal structure of shell one in the cryogenic extrusion device;

[0014] Figure 3 is a schematic diagram of the structure of the rotating shaft, conveying blades and stirring blades in the cryogenic extrusion device;

[0015] Figure 4 is a schematic diagram of the structure of the feed pipe and the second shell in the low-temperature extrusion device;

[0016] Figure 5 is a cross-sectional view of the internal structure of shell one in the cryogenic extrusion unit;

[0017] Figure 6 is a schematic diagram of the sealing mechanism in a cryogenic extrusion device.

[0018] Figure 7 is a schematic diagram of the sealing mechanism in a cryogenic extrusion device.

[0019] In the picture:

[0020] 10. Shell 1; 11. Shell 2; 12. Motor; 13. Pulley; 14. Feed hopper; 15. Feed pipe; 16. Nitrogen generator unit; 17. Return pipe;

[0021] 20. Rotating shaft; 21. Conveying blades; 22. Agitating blades; 23. Sealing cover;

[0022] 30. Sealing plate; 31. Nozzle; 32. Baffle; 33. Wheels; 34. Reciprocating screw. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please refer to Figures 1 to 7. The low-temperature extrusion device provided by this utility model includes a housing 10, a housing 21, and a feeding pipe 15. Rotating grooves are respectively opened inside the housing 10 and the housing 21 along their respective length directions. A conveying mechanism is provided inside the housing 10 and the housing 21. The conveying mechanism includes a rotating shaft 20, which is horizontally arranged inside the housing 10 and its axial direction is consistent with the length direction of the housing 10. A conveying blade 21 and a stirring blade 22 are sleeved on the outer arc wall of the rotating shaft 20. The cross section of the conveying blade 21 along the radial direction of the rotating shaft 20 is helical. The blades on the outer arc wall of the stirring blade 22 can be spliced ​​into a complete helical surface along the circumferential extension surface of the rotating shaft 20. The rotation directions of the conveying blade 21 and the stirring blade 22 are opposite. Four sliding grooves are arranged in a ring array about the axial direction of the rotating shaft 20 on the inner arc wall of the rotating groove inside the housing 10. A sealing mechanism is provided in the sliding groove.

[0025] The same feeding pipe 15 is fixed at one end of the housing 10 and the housing 21 that are close to each other. A pulley 13 is fixed at one end of the rotating shaft 20 provided inside the housing 10 along the axial direction away from the feeding pipe 15. A motor 12 is provided at the bottom of the housing 10. A pulley 13 with the same structure is fixed at the output end of the motor 12. The same belt is sleeved in the groove of the two pulleys 13. A pulley 13 is fixed at one end of the rotating shaft 20 provided inside the housing 21 along the axial direction close to the feeding pipe 15.

[0026] The feeding pipe 15 is equipped with an auger. The top of the housing 10 away from the feeding pipe 15 is fixed with a feeding hopper 14. The end of the housing 10 near the feeding pipe 15 and the end of the housing 21 away from the feeding pipe 15 are both fixed with a sealing cover 23 of the same structure. The rotating shaft 20 and the pulley 13 coaxially fixed with it in the housing 21 are both provided with a storage channel along the axial direction.

[0027] A conveying pipe is rotatably installed on the storage channel on the pulley 13 at the opening away from the housing 2 11. A nitrogen generator 16 is fixed to the end of the conveying pipe away from the pulley 13. A return pipe 17 is fixed to the top of the housing 2 11 away from the feeding pipe 15. The return pipe 17 is set towards the housing 10. The end of the return pipe 17 away from the housing 2 11 is fixed to the housing 10 and communicates with the interior of the housing 10.

[0028] It should be noted that: acorns enter the housing 10 through the feed hopper 14. Inside the housing 10, the rotating shaft 20 drives the conveying blades 21 to rotate, conveying the acorns axially to the feeding pipe 15. At the same time, the return pipe 17 returns the nitrogen gas that has absorbed heat in the housing 21 back to the housing 10 to pre-cool the acorns that have been initially transported. The auger in the feeding pipe 15 lifts the acorns into the housing 21. Inside the housing 21, the rotating shaft 20 continues to drive the conveying blades 21 to rotate, conveying the acorns axially to the processing area.

[0029] The conveying blade 21 is a complete spiral blade, and the stirring blade 22 is a number of small blades spaced apart. The extended surfaces of the curved surfaces of the multiple small blades can be spliced ​​together to form a complete spiral surface. During the conveying process, the stirring blade 22 rotates with the rotating shaft 20 to stir the acorns. Since the conveying blade 21 and the stirring blade 22 rotate in opposite directions, the stirring blade 22 can appropriately transport the acorns in the opposite direction to further enhance the stirring effect, increase the contact time between the acorns and the low-temperature nitrogen, and make the acorns contact the low-temperature nitrogen as evenly as possible, thereby improving the heat exchange efficiency and reducing energy waste.

[0030] In one possible embodiment, the nitrogen generator 16 adopts the Shunchuang / SCZD-5C model. Here, the nitrogen generator 16 discharges nitrogen at a constant low temperature of 10 degrees Celsius, and the flow rate is stable at 5 to 6 cubic meters per hour. The nitrogen generator 16 injects low-temperature nitrogen into the housing 21 through the delivery pipe. The low-temperature nitrogen flows through the storage channel in the rotating shaft 20, which lowers the temperature of the rotating shaft 20 itself. The acorns that have been cooled and stirred are extruded and shaped at the end of the housing 21. The nitrogen that has absorbed heat in the housing 21 returns to the housing 10 through the return pipe 17, realizing the recycling of nitrogen.

[0031] Please refer to Figures 1 to 7. This utility model provides a technical solution: The sealing mechanism in the slide groove 1 inside the housing 10 includes a sealing plate 30 that slides on the inner side wall of the slide groove 1. The length direction of the sealing plate 30 is tangent to the circumferential direction of the rotating groove, and the side wall of the sealing plate 30 near the rotating groove is flush with the inner arc wall of the rotating groove. A nozzle 31 is slidably connected in the slide groove 1. The sealing plate 30 and the nozzle 31 are interlocked. A slider is fixed at the end of the nozzle 31 away from the rotating groove. The slider slides on the inner wall of the slide groove 1 away from the rotating groove.

[0032] The slider of the nozzle 31 away from the rotating groove has a threaded groove through the side wall along the axial direction of the rotating shaft 20. A reciprocating screw 34 is threadedly connected in the threaded groove. The reciprocating screw 34 is horizontally set. A driven gear is fixed at one end of the reciprocating screw 34 along its axial direction. The same external gear ring is meshed on the side of the four driven gears that are close to each other. The external gear ring is fixed on the outer arc wall of the rotating shaft 20. The external gear ring and the driven gears are both located inside the housing 10.

[0033] The sealing plate 30 is rotatably provided with two side walls along its own length direction, and a second slide groove is provided on the inner side wall of the first slide groove at the position corresponding to the position of the walking wheel 33. The cross section of the second slide groove along the radial direction of the rotating shaft 20 is "T" shaped, and the walking wheel 33 slides in the second slide groove.

[0034] The nozzle 31 is rotatably connected to two ends of the slide groove along the length of the slide groove, and the baffles 32 are flush with the opening of the slide groove.

[0035] It should be noted that: the sealing mechanism ensures the uniform distribution and effective utilization of nitrogen gas in the housing; the sealing plate 30 and the nozzle 31 are interlocked; the reciprocating motion of the nozzle 31 is achieved by the reciprocating screw 34 and the external gear ring, thereby expanding the nitrogen gas injection range; the baffle 32 prevents acorns from getting stuck at the interlocking point between the sealing plate 30 and the nozzle 31; and the traveling wheel 33 ensures the smooth sliding of the sealing plate 30 in the first slide groove.

[0036] When the pulley 13 rotates, it drives the external gear ring to rotate. The external gear ring drives the four driven gears to rotate, which in turn drives the reciprocating screw 34 to rotate. The reciprocating screw 34 drives the slider to reciprocate along the axis of the reciprocating screw 34, which in turn drives the nozzle 31 to reciprocate. On the one hand, this makes the acorns pre-cooled evenly, and on the other hand, the sealing plate 30 slides along the inner arc wall of the rotating groove to prevent the acorns from clogging at the conveying blade 21 and the stirring blade 22, thus providing auxiliary unblocking.

[0037] Working principle:

[0038] Acorns enter shell 10 through hopper 14. The rotating shaft 20 drives the conveying blades 21 to push them to the feeding pipe 15. At the same time, the return pipe 17 guides the nitrogen gas absorbed by shell 21 back to shell 10 to pre-cool the acorns. The auger in the feeding pipe 15 lifts the acorns to shell 21. The rotating shaft 20 continues to drive the conveying blades 21 to send them to the processing area. The stirring blades 22 rotate with the rotating shaft 20. Their reverse rotation design causes the acorns to move in the opposite direction, which enhances the stirring effect. Combined with low temperature nitrogen gas, uniform cooling is achieved.

[0039] The nitrogen generator 16 injects low-temperature nitrogen into the housing 11 through the delivery pipe. The nitrogen reduces the temperature of the equipment through the internal channel of the rotating shaft 20. After absorbing heat, it returns to the housing 10 through the return pipe 17 for recycling. In the sealing mechanism, the rotating shaft 20 drives the reciprocating screw 34 to rotate through the external gear ring, which drives the nozzle 31 to reciprocate along the slide groove 1 to expand the nitrogen injection range. The sealing plate 30 slides smoothly in the slide groove 2 through the traveling wheel 33 to prevent acorn blockage. The baffle 32 prevents materials from getting stuck in the sealing gap and ensures the nitrogen sealing performance.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A low-temperature extrusion apparatus, comprising a first housing (10), a second housing (11), and a feeding pipe (15), wherein the first housing (10) and the second housing (11) are respectively provided with rotating grooves along their respective length directions, characterized in that: Both housing one (10) and housing two (11) are provided with a conveying mechanism. The conveying mechanism includes: a rotating shaft (20), which is horizontally set in housing one (10) and its axial direction is consistent with the length direction of housing one (10). A conveying blade (21) and a stirring blade (22) are sleeved on the outer arc wall of the rotating shaft (20). The cross section of the conveying blade (21) along the radial direction of the rotating shaft (20) is helical. The blades on the outer arc wall of the stirring blade (22) can be spliced ​​into a complete helical surface along the circumferential extension surface of the rotating shaft (20). The rotation direction of the conveying blade (21) and the stirring blade (22) are opposite. Four sliding grooves are provided on the inner arc wall of the rotating groove in housing one (10) in a ring array about the axial direction of the rotating shaft (20). A sealing mechanism is provided in the sliding groove one.

2. The cryogenic extrusion apparatus as described in claim 1, characterized in that: The same feeding pipe (15) is fixed at one end of the housing 1 (10) and housing 2 (11) close to each other. A pulley (13) is fixed at one end of the rotating shaft (20) provided in housing 1 (10) away from the feeding pipe (15) along the axial direction. A motor (12) is provided at the bottom of housing 1 (10). A pulley (13) with the same structure is fixed at the output end of the motor (12). The same belt is sleeved in the groove of the two pulleys (13). A pulley (13) is fixed at one end of the rotating shaft (20) provided in housing 2 (11) close to the feeding pipe (15) along the axial direction.

3. The cryogenic extrusion apparatus of claim 2, wherein: The feeding pipe (15) is equipped with an auger. The top of the first housing (10) away from the feeding pipe (15) is fixed with a feeding hopper (14). The end of the first housing (10) near the feeding pipe (15) and the end of the second housing (11) away from the feeding pipe (15) are both fixed with a sealing cover (23) of the same structure. The rotating shaft (20) set in the second housing (11) and the pulley (13) fixed to it on the same axis are both provided with a storage channel along the axial direction.

4. The cryogenic extrusion apparatus of claim 3, wherein: A conveying pipe is rotatably installed at the opening of the storage channel on the pulley (13) away from the housing two (11). A nitrogen generator unit (16) is fixed at one end of the conveying pipe away from the pulley (13). A return pipe (17) is fixed at one end of the top of the housing two (11) away from the feeding pipe (15). The return pipe (17) is set towards the housing one (10). The end of the return pipe (17) away from the housing two (11) is fixed on the housing one (10) and communicates with the interior of the housing one (10).

5. The cryogenic extrusion apparatus of claim 4, wherein: The sealing mechanism in the slide groove of the housing (10) includes a sealing plate (30) that slides on the inner side wall of the slide groove. The length direction of the sealing plate (30) is tangent to the circumferential direction of the rotating groove, and the side wall of the sealing plate (30) near the rotating groove is flush with the inner arc wall of the rotating groove. A nozzle (31) is slidably connected in the slide groove. The sealing plate (30) and the nozzle (31) are interlocked. A slider is fixed at the end of the nozzle (31) away from the rotating groove. The slider slides on the inner wall of the slide groove away from the rotating groove.

6. The cryogenic extrusion apparatus as described in claim 5, characterized in that: The nozzle (31) has a threaded groove through the side wall of the rotating shaft (20) along the axial direction of the slider away from the rotating groove. A reciprocating screw (34) is threaded in the threaded groove. The reciprocating screw (34) is set horizontally. A driven gear is fixed at one end of the reciprocating screw (34) along its axial direction. The four driven gears are meshed with the same external gear ring on the side that is close to each other. The external gear ring is fixed on the outer arc wall of the rotating shaft (20). The external gear ring and the driven gear are both located in the housing (10).

7. The cryogenic extrusion apparatus of claim 5, wherein: The sealing plate (30) has a traveling wheel (33) rotatably mounted on both sides of its length direction. A second sliding groove is provided on the inner side wall of the first sliding groove at the position corresponding to the traveling wheel (33). The cross section of the second sliding groove along the radial direction of the rotating shaft (20) is "T" shaped, and the traveling wheel (33) slides in the second sliding groove.

8. The cryogenic extrusion apparatus of claim 5, wherein: The nozzle (31) is rotatably connected to two ends of the slide along the length of the slide at one end near the rotating groove, and the baffles (32) are flush with the opening of the slide.

Images