A TMR feed mixer

Abstract

The present invention belongs to the technical field of mixers, and particularly to a TMR feed mixer, comprising a mixing barrel and a plurality of supporting legs for supporting the mixing barrel, a feeding module is arranged on the side of the mixing barrel, a first bearing is arranged at the center of the bottom surface of the mixing barrel, an outer ring of the first bearing is fixedly arranged at the center of the bottom surface of the mixing barrel, an inner ring of the first bearing is fixedly arranged with a rotating shaft with a hollow interior, a plurality of mixing shaft holes are arranged on the circumferential surface of the rotating shaft, a second bearing is arranged in the plurality of mixing shaft holes, a mixing shaft is fixedly arranged on the inner ring of the second bearing, a plurality of first mixing rollers are fixedly arranged on the mixing shaft, a plurality of mixing shafts are rotatably arranged on one side close to the inner wall of the mixing barrel, a plurality of worm gears are rotatably arranged on the mixing shaft, and second stirring rollers are symmetrically fixedly arranged on both sides of the worm gears. The feed can be prevented from remaining on the barrel wall during mixing, thereby causing poor mixing effect, and the feed residue inside the machine body can be reduced, which is convenient for cleaning.

Description

Technical Field

[0001] The invention relates to the technical field of mixers, and in particular to a TMR feed mixer. Background Art

[0002] The existing TMR feed mixer directly puts roughage and concentrated feed into the mixer for mixing when it is working, but the roughage contains impurities such as dust, which is not good for the health of livestock; the whole-day mixed diet also needs to add artificial additives such as trace elements, most of which are in powder form, and the feed contains water. Directly adding trace elements can easily cause caking, which is not good for livestock absorption and has poor palatability; due to the appearance of caking, roughage, concentrated feed and caking are often attached to the inner wall and mixing roller of the mixer after it finishes working. Long-term retention will cause certain corrosion to the equipment and it is difficult to clean. Summary of the invention

[0003] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a TMR feed mixer, which can avoid feed residue on the barrel wall during the mixing process, thereby causing poor mixing effect, and can reduce feed residue inside the machine body for easy cleaning.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a TMR feed mixer, comprising a mixing barrel and a plurality of supporting legs for supporting the mixing barrel, a feeding module is provided on the side of the mixing barrel, a first bearing is arranged at the center of the bottom surface of the mixing barrel, an outer ring of the first bearing is fixedly arranged at the center position of the bottom surface of the mixing barrel, an inner ring of the first bearing is fixedly arranged with a rotating shaft with a hollow interior, a plurality of groups of first stirring shaft hole groups are arranged on the circumferential surface of the rotating shaft, the stirring holes of the same group are on the same radial surface of the rotating shaft, the first stirring shaft hole group has at least one stirring shaft hole, a second bearing is arranged in the plurality of stirring shaft holes, and the outer ring of the second bearing is fixedly arranged with the stirring shaft hole , a plurality of stirring shafts are fixedly arranged on the inner rings of the second bearings, a plurality of first stirring rollers are fixedly arranged on the stirring shafts, the smaller the distance between the plurality of first stirring rollers and the inner wall of the stirring barrel, the longer the length, a plurality of agitating shafts are rotatably arranged on the side close to the inner wall of the stirring barrel, the side of the agitating shafts away from the inner wall of the stirring barrel is in contact with the inner wall of the stirring barrel, a plurality of worm gears are rotatably arranged on the stirring shafts, the axial direction of the worm gears is perpendicular to the axial direction of the stirring shaft, a second torsion spring is arranged between the worm gears and the stirring shaft, the second stirring rollers are symmetrically fixedly arranged on both sides of the worm gears, a worm is provided on the circumferential surface of the end of the agitating shaft away from the inner wall of the stirring barrel, the worm is meshed with the worm gear for transmission. When the stirring shafts rotate, the worm gears are driven to rotate on the worm gears, so that the horizontal second stirring rollers are fitted to the inner wall of the stirring barrel.

[0005] Preferably, the anti-rotation baffle is made of a wear-resistant hard material, the anti-rotation baffle is convex and the bottom surface is an arc with the same radius as the inner wall of the mixing barrel, the bottom surface of the anti-rotation baffle is tightly fitted with the inner wall of the mixing barrel, and the worm wheel has only one quarter of its teeth. One quarter of the worm wheel has teeth to ensure that the worm wheel and the worm are too meshed, resulting in excessive force on the inner wall of the mixing barrel by the second stirring roller, causing hardware damage.

[0006] Preferably, the feeding module includes an inclined main beam, baffles perpendicular to the main beam are fixed downward at both ends of the main beam, a number of evenly spaced semicircular support rings are fixedly connected below the two main beams, a semicircular arc screen is fixedly connected to the inner side of the main beam and the support ring, a plurality of columns are fixedly arranged on the outer side of the main beam, a vibrator is fixedly arranged at the lower end of the column, a support frame into which the vibrator can be inserted is fixedly arranged below the vibrator, and a spring is arranged between the vibrator and the support frame. The roughage is shaken during the feeding process to shake the dust out of the feed, and the setting of the spring can reduce the vibration of the column.

[0007] Preferably, a second driven gear is fixedly provided at the lower end of the rotating shaft, a second driving motor is provided below the mixing barrel, a second driving gear is fixedly provided at the output end of the second driving motor, the second driving gear is meshed with the second driven gear for transmission, a base is fixedly provided below the mixing barrel, the base is sealed with the inner ring of the rotating shaft, a feeding pipe is fixedly provided on the base, the feeding pipe is located inside the rotating shaft, the end of the mixing shaft close to the rotating shaft is inside the inner ring of the rotating shaft and does not contact the feeding pipe, a plurality of first bevel gears are fixedly provided at one end of the mixing shaft close to the rotating shaft, a plurality of second bevel gears are fixedly provided on the feeding pipe, the number of the second bevel gears is consistent with the number of the mixing shaft hole group, the second bevel gears are meshed with the first bevel gear for transmission.

[0008] Preferably, a fourth bearing is arranged at the upward end of the material spreading pipe, the outer ring of the fourth bearing is fixed to the rotating shaft, the inner ring of the fourth bearing is fixed to the material spreading pipe, the material spreading pipe, the fourth bearing, the base and the inner ring of the rotating shaft are sealed to form a first air channel, the part of the material spreading pipe extending out of the rotating shaft is provided with material spreading holes evenly distributed radially around, and a third air channel is arranged inside the material spreading pipe, and the third air channel is communicated with the material spreading holes.

[0009] Preferably, the symmetrical second stirring roller is provided with a plurality of opposite blowing holes, a first air hole is provided at one end of the second stirring roller close to the stirring shaft, the first air hole is communicated with the blowing hole, a second air duct is provided in the stirring shaft, the second air duct is communicated with the first air duct, and the first air hole is communicated with the second air duct through a hose.

[0010] Preferably, a hot air hole is provided on the base, and the hot air hole is communicated with the first air channel. A feed hole is provided on the base, and the feed hole is directly communicated with the third air channel. The hot air hole is externally connected to a hot air blowing device, and the feed hole is externally connected to a pumping device that can pump materials into the spreading pipe and pump the materials out from the outlet hole at the upper end of the spreading pipe.

[0011] Preferably, the second stirring roller is made of elastic material.

[0012] Preferably, a plurality of stirring blades are provided at the bottom of the rotating shaft, which can scoop the material at the bottom of the stirring barrel to the first stirring roller.

[0013] Preferably, a detachable discharge plate is provided on the side wall of the mixing barrel close to the bottom surface, and a discharge port is provided on one side of the circumferential surface of the mixing barrel close to the discharge plate, and the area of ​​the discharge port is smaller than that of the discharge plate.

[0014] Beneficial effects:

[0015] The present invention realizes preliminary dust removal of feed through a feeding module pair, so that the product is healthier and more beneficial to livestock; artificial additives are evenly sprinkled into the stirred material through the uppermost spreading hole, so as to reduce the possibility of agglomeration; the second stirring roller can bring the residue on the inner wall of the stirring barrel into the stirred material, and the residue on the first stirring roller can be scraped off for easy cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front view of the present invention;

[0017] Figure 2 A top view of the present invention;

[0018] Figure 3 for Figure 2 The mixing barrel part of the cross-sectional view at AA;

[0019] Figure 4 for Figure 3 The enlarged view of B in the middle;

[0020] Figure 5 for Figure 4 Sectional view at CC;

[0021] Figure 6 Parts drawing of the anti-rotation baffle.

[0022] In the figure: a mixing barrel 1, a supporting leg 12, a feeding module 4, a first bearing 14, a rotating shaft 13, a rotating shaft 13, a mixing shaft hole 18, a second bearing 19, a mixing shaft 17, a first mixing roller 37, a stop baffle 40, a worm gear 42, a second torsion spring 41, a second mixing roller 43, a worm 45, a main beam 5, a support ring 24, a screen 25, a column 27, a vibrating body 28, a support frame 23, a spring 30, a second driven gear 15, a second drive motor 31, a second drive gear 16, a base 36, a spreading pipe 35, a first bevel gear 38, a second bevel gear 39, a fourth bearing 50, a first air duct 51, a third air duct 52, an air hole 46, a first air hole 47, a second air duct 49, a hot air hole 53, a feed hole 54, a mixing blade 55, and a discharge plate 44. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0024] In the description of the present invention, it should be noted that the terms "inside", "below", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] Combined with Figure 1-6A TMR feed mixer comprises a mixing barrel 1 and a plurality of supporting legs 12 for supporting the mixing barrel 1, a feeding module 4 is arranged on the side of the mixing barrel 1, a first bearing 14 is arranged at the center of the bottom surface of the mixing barrel 1, an outer ring of the first bearing 14 is fixedly arranged at the center of the bottom surface of the mixing barrel 1, an inner ring of the first bearing 14 is fixedly arranged at a rotating shaft 13 with a hollow interior, a plurality of groups of first mixing shaft hole groups are arranged on the circumferential surface of the rotating shaft 13, the mixing holes of the same group are on the same radial surface of the rotating shaft 13, the first mixing shaft hole group has at least one mixing shaft hole 18, a plurality of second bearings 19 are arranged in the mixing shaft holes 18, an outer ring of the second bearing 19 is fixedly arranged with the mixing shaft hole 18, a plurality of second bearings 19 inner rings are fixedly arranged with mixing shafts A mixing shaft 17, on which a plurality of first stirring rollers 37 are fixedly arranged, the smaller the distance between the plurality of first stirring rollers 37 and the inner wall of the mixing barrel 1 is, the longer the length is; a stop baffle 40 is rotatably arranged on one side of the plurality of stirring shafts 17 close to the inner wall of the mixing barrel 1, the side of the stop baffle 40 away from the stirring shaft 17 is in contact with the inner wall of the mixing barrel 1, a plurality of worm gears 42 are rotatably arranged on the stirring shaft 17, the axial direction of the worm gear 42 is perpendicular to the axial direction of the stirring shaft 17, a second torsion spring 41 is arranged between the worm gear 42 and the stirring shaft 17, second stirring rollers 43 are symmetrically fixed on both sides of the worm gear 42, a worm 45 is provided on the circumferential surface of the end of the stop baffle 40 away from the inner wall of the mixing barrel, and the worm 45 is meshed with the worm gear 42 for transmission.

[0026] Furthermore, the loading module 4 includes an inclined main beam 5, and baffles perpendicular to the main beam 5 are fixedly arranged downward at both ends of the main beam 5. A plurality of evenly spaced semicircular support rings 24 are fixedly connected below the two main beams 5, and a semicircular arc-shaped screen 25 is fixedly connected to the inner side of the main beam 5 and the support ring 24. A plurality of columns 27 are fixedly arranged on the outer side of the main beam 5, and a vibrator 28 is fixedly arranged at the lower end of the column 27. A support frame 23 into which the vibrator 28 can be inserted is fixedly arranged below the vibrator 28, and a spring 30 is arranged between the vibrator 28 and the support frame 23.

[0027] Furthermore, a second driven gear 15 is fixedly provided at the downward end of the rotating shaft 13, a second drive motor 31 is provided below the mixing barrel 1, a second drive gear 16 is fixedly provided at the output end of the second drive motor 31, the second drive gear 16 is meshed with the second driven gear 15 for transmission, a base 36 is fixedly provided below the mixing barrel 1, the base 36 is sealed with the inner ring of the rotating shaft 13, a feeding pipe 35 is fixedly provided on the base 36, the feeding pipe 35 is located inside the rotating shaft 13, one end of the stirring shaft 17 close to the rotating shaft 13 is inside the inner ring of the rotating shaft 13 and does not contact the feeding pipe 35, a plurality of first bevel gears 38 are fixedly provided at one end of the stirring shafts 17 close to the rotating shaft, a plurality of second bevel gears 39 are fixedly provided on the feeding pipe 35, the number of the second bevel gears 39 is consistent with the number of the stirring shaft hole group, and the second bevel gears 39 are meshed with the first bevel gear 38 for transmission.

[0028] Furthermore, a fourth bearing 50 is arranged at the upward end of the material spreading pipe 35, the outer ring of the fourth bearing 50 is fixed to the rotating shaft 13, the inner ring of the fourth bearing 50 is fixed to the material spreading pipe 35, the material spreading pipe 35 and the fourth bearing 50 and the base 36 are sealed with the inner ring of the rotating shaft 13 to form a first air channel 51, the part of the material spreading pipe 35 extending out of the rotating shaft 13 is provided with material spreading holes uniformly distributed radially around, and a third air channel 52 is arranged inside the material spreading pipe 35, and the third air channel 52 is communicated with the material spreading holes.

[0029] Furthermore, the symmetrical second stirring roller 43 is provided with a plurality of opposite blowing holes 46, a first air hole 47 is provided at one end of the second stirring roller 43 close to the stirring shaft 17, the first air hole 47 is communicated with the blowing hole 46, a second air channel 49 is provided in the stirring shaft 17, the second air channel 49 is communicated with the first air channel 51, and the first air hole 47 is communicated with the second air channel 49 through a hose 48.

[0030] Furthermore, a hot air hole 53 is provided on the base 36, which is communicated with the first air duct 51. A feed hole 54 is provided on the base 36, which is directly communicated with the third air duct 52. The hot air hole 53 is externally connected to a hot air blowing device, and the feed hole 54 is externally connected to a pumping device that can pump materials into the spreading pipe 35 and pump the materials out from the discharge hole at the upper end of the spreading pipe 35.

[0031] Furthermore, the second stirring roller 43 is made of elastic material.

[0032] Furthermore, a plurality of stirring blades 55 are provided at the bottom of the rotating shaft 13 for shoveling the material at the bottom of the stirring barrel 1 to the first stirring roller 37 .

[0033] Furthermore, a detachable discharge plate 44 is provided on the side wall of the mixing barrel 1 close to the bottom surface, and a discharge port is provided on one side of the circumferential surface of the mixing barrel 1 close to the discharge plate 44, and the area of ​​the discharge port is smaller than that of the discharge plate 44.

[0034] How it works

[0035] Initially, the feeding module starts, the vibrator 28 starts to vibrate, and the roughage and concentrated feed are put between the main beam 5 and the screen 25. Under the action of the vibrator 28, impurities such as dust in the roughage can be removed, and the roughage and concentrated feed are preliminarily mixed and finally sent into the mixing barrel 1 by the feeding module 4.

[0036] When the mixing operation starts, the second mixing roller 43 is in a horizontal state, the second driving motor 31 drives the rotating shaft 13 to rotate, the rotating shaft 13 drives the mixing shaft 17 to rotate, the second bevel gear 39 drives the first bevel gear 38 to make the mixing shaft 17 rotate, and the mixing shaft 17 drives the first mixing roller 37 to rotate to mix the feed. Because the anti-rotation baffle 40 cannot rotate, the worm 45 forces the worm wheel 42 to rotate during the process, so that the second mixing roller 43 becomes vertically close to the inner wall of the mixing barrel 1, and then the worm wheel 42 reaches the part without teeth, and the worm wheel 42 and the worm 45 are always in a state of meshing and separation.

[0037] During the subsequent stirring process, while rotating together with the rotating shaft 13 , the second stirring roller 43 can rotate along with the stirring shaft 17 in contact with the inner wall of the stirring barrel 1 to scrape off the feed mixture adhering to the inner wall.

[0038] At the same time, after stirring for a certain period of time, the hot air blowing mechanism is started, and the hot air enters the first air channel 51 through the second air channel 49, and is blown out from the multiple blowing holes 46. The hot air passes through the second air channel 49 to heat the spreading pipe 35, and the pumping equipment starts pumping. The artificial additive is pumped into the spreading pipe 35, and is pumped out from the discharge hole at the upper end of the spreading pipe 35, and is evenly sprinkled on the feed being stirred, and then is evenly mixed with the feed through the first stirring roller 37; the spreading pipe 35 heated by hot air can prevent the artificial additive from being blocked inside the spreading pipe.

[0039] During this process, if there is hard residue that cannot be scraped off, under the action of the second torsion spring 41, the second stirring roller 43 can rotate to overcome the obstacle to avoid being stuck.

[0040] Moreover, during this process, when hot air is blown from the air holes 46 , the residue on the barrel wall can be dried, so that the adhesion of the residue is reduced and it is easier to be scraped off by the second stirring roller 43 .

[0041] When the stirring work is finished, the horizontal state and the vertical state switching of the second stirring roller 43 are realized by controlling the reverse rotation of the second drive motor 31, and the two second stirring rollers 43 are reset against the wall of the first stirring roller 37. During the process, the hot air mechanism is started, and the hot air is blown out through the blowing holes 46 on the second stirring roller 43, which can make it easy to scrape off the lumps on the first stirring roller 37, avoid excessive feed residue on the first stirring roller 37, and make it more convenient to flush and clean it later.

[0042] The above descriptions are merely embodiments of the present invention, and are not intended to limit the patent protection scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A TMR feed mixer, comprising a mixing barrel (1) and a plurality of supporting legs (12) for supporting the mixing barrel (1), wherein a feeding module (4) is provided on the side of the mixing barrel (1), characterized in that: A first bearing (14) is arranged at the center of the bottom surface of the mixing barrel; the outer ring of the first bearing (14) is fixedly arranged at the center position of the bottom surface of the mixing barrel (1); the inner ring of the first bearing (14) is fixedly arranged on a rotating shaft (13) with a hollow interior; a plurality of first stirring shaft hole groups are arranged on the circumferential surface of the rotating shaft (13); each of the first stirring shaft hole groups comprises a plurality of stirring shaft holes (18) evenly distributed on the rotating shaft (13) along the circumferential direction; a second bearing (19) is arranged in each of the stirring shaft holes (18); the outer ring of the second bearing (19) is fixedly arranged on the stirring shaft hole (18); a stirring shaft (17) is fixedly arranged on the inner ring of each of the second bearings (19); and at least one first stirring roller group is fixedly arranged on each of the stirring shafts (17) along the circumferential direction; each of the first stirring roller groups comprises a plurality of stirring shaft holes evenly distributed along the axial direction. a first stirring roller (37), wherein the closer the distance between each first stirring roller (37) and the inner wall of the stirring barrel (1) is, the longer the length is; a stop baffle (40) is rotatably arranged on the side of each stirring shaft (17) close to the inner wall of the stirring barrel (1); the side of the stop baffle (40) away from the stirring shaft (17) contacts the inner wall of the stirring barrel (1); a worm gear (42) is rotatably arranged on the stirring shaft (17) and close to the stop baffle (40) in the same straight line as the stirring shaft (17); second stirring rollers (43) are symmetrically rotatably arranged on both sides of the worm gear (42); a second torsion spring (41) is provided at the rotation connection between the worm gear (42) and the second stirring roller (43); a worm (45) is provided on the circumferential surface of the end of the stop baffle (40) away from the inner wall of the stirring barrel; the worm gear (45) is meshed with the worm gear (42) for transmission; A second driven gear (15) is fixedly arranged at the lower end of the rotating shaft (13); a second driving motor (31) is arranged below the mixing barrel (1); a second driving gear (16) is fixedly arranged at the output end of the second driving motor (31); the second driving gear (16) is meshed with the second driven gear (15) for transmission; a base (36) is fixedly arranged below the mixing barrel (1); the base (36) is sealed with the inner ring of the rotating shaft (13); a material spreading pipe (35) is fixedly arranged on the base (36); ), the material spreading tube (35) is located inside the rotating shaft (13), the end of the stirring shaft (17) close to the rotating shaft (13) is inside the inner circle of the rotating shaft (13) and does not contact the material spreading tube (35), a first bevel gear (38) is fixedly provided at the end of each stirring shaft (17) close to the rotating shaft, a plurality of second bevel gears (39) are fixedly provided on the material spreading tube (35), the number of the second bevel gears (39) is consistent with the number of the stirring shaft hole group, and the second bevel gears (39) are meshed with the first bevel gears (38) for transmission; A fourth bearing (50) is arranged at the upward end of the material spreading pipe (35), the outer ring of the fourth bearing (50) is fixedly arranged with the rotating shaft (13), the inner ring of the fourth bearing (50) is fixedly arranged with the material spreading pipe (35), the material spreading pipe (35) and the fourth bearing (50) and the base (36) are sealed with the inner ring of the rotating shaft (13) to form a first air passage (51), the portion of the material spreading pipe (35) extending out of the rotating shaft (13) is provided with material spreading holes uniformly distributed radially in all directions, and a third air passage (52) is arranged inside the material spreading pipe (35), and the third air passage (52) is communicated with the material spreading holes; The two symmetrical second stirring rollers (43) are provided with a plurality of opposite blowing holes (46); a first air hole (47) is provided at one end of the second stirring roller (43) close to the stirring shaft (17); the first air hole (47) is communicated with the blowing hole (46); a second air channel (49) is provided in the stirring shaft (17); the second air channel (49) is communicated with the first air channel (51); the first air hole (47) is communicated with the second air channel (49) through a hose (48); The base (36) is provided with a hot air hole (53), the hot air hole being in communication with the first air channel (51); the base (36) is provided with a feed hole (54), the feed hole (54) being in direct communication with the third air channel (52); the hot air hole (53) is externally connected to a hot air blowing device, and the feed hole (54) is externally connected to a pumping device that can pump materials into the material spreading pipe (35) and can pump the materials out from the discharge hole at the upper end of the material spreading pipe (35).

2. A Tmr feed mixer according to claim 1, characterized in that: The anti-rotation baffle (40) is made of a wear-resistant hard material. The anti-rotation baffle (40) is convex and its bottom surface is an arc that fits the radius of the inner wall of the mixing barrel (1). The bottom surface of the anti-rotation baffle (40) fits tightly against the inner wall of the mixing barrel. Only one quarter of the worm wheel (42) has teeth.

3. A TMR feed mixer according to claim 1, characterized in that: The feeding module (4) comprises a main beam (5) arranged obliquely, baffles perpendicular to the main beam (5) being fixedly arranged downwardly at both ends of the main beam (5), a plurality of evenly spaced semicircular support rings (24) being fixedly connected below the two main beams (5), a semicircular arc-shaped screen (25) being fixedly connected to the inner side of the main beam (5) and the support rings (24), a plurality of columns (27) being fixedly arranged outside the main beam (5), a vibrating body (28) being fixedly arranged at the lower end of the column (27), a support frame (23) into which the vibrating body (28) can be inserted being fixedly arranged below the vibrating body (28), and a spring (30) being arranged between the vibrating body (28) and the support frame (23).

4. A TMR feed mixer according to claim 1, characterized in that: The second stirring roller (43) is made of elastic material.

5. A TMR feed mixer according to claim 1, characterized in that: A plurality of stirring blades (55) are arranged at the bottom of the rotating shaft (13) and can scoop up the material at the bottom of the stirring barrel (1) to the first stirring roller (37).

6. A TMR feed mixer according to claim 1, characterized in that: A detachable discharge plate (44) is provided on the side wall of the mixing barrel (1) close to the bottom surface, and a discharge port is provided on the side of the circumferential surface of the mixing barrel (1) close to the discharge plate (44), wherein the area of ​​the discharge port is smaller than that of the discharge plate (44).

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