Agricultural cotton huller

Abstract

The invention belongs to the technical field of cotton processing, and relates to an agricultural cotton huller which comprises a machine shell, a hull breaking part is arranged on the upper side of one end of the machine shell and comprises a hull breaking shell, a feeding groove is formed in the upper half portion of the hull breaking shell, a discharging opening is formed in the groove bottom of the feeding groove, a mounting groove is formed in the lower half portion of the hull breaking shell, and a crushing device is arranged in the mounting groove. The crushing device comprises two upper extrusion plates, two lower extrusion plates and a driving assembly, extrusion blocks are arranged on the front portions of the upper extrusion plates and the front portions of the lower extrusion plates, an embedded groove is formed between every two adjacent extrusion blocks, a first discharging channel is formed between every two upper extrusion plates, and a second discharging channel is formed between every two lower extrusion plates. And a second blanking channel is formed between the two lower extrusion plates, a blanking opening is formed in the groove bottom of the mounting groove, and a discharging device for intermittently opening the discharging opening is further arranged at the top of the shell breaking shell. According to the cotton huller, the crushing effect on hulls of cotton with hulls is improved, that is, the hulling effect of cotton is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cotton processing, in particular to a cotton hulling machine for agriculture. Background Art

[0002] Cotton is one of the important economic crops in my country. There are three major cotton-growing areas in my country, namely the Yangtze River Basin, the Yellow River Basin and the Northwest Inland Area mainly in Xinjiang. The cotton flowers are milky white, turning deep red soon after blooming and then withering, leaving behind small green capsules called bolls. Inside the bolls are cotton seeds. The hairs on the cotton seeds grow from the cotton seed epidermis and fill the inside of the bolls. When the bolls are mature, they split open, revealing soft fibers.

[0003] After cotton is picked from the tree, it is with the shell, and the shell needs to be removed by a shelling machine. The Chinese patent application with the announcement number CN115491770B discloses a cotton shelling machine for agriculture, including a shell, a shell breaking part, a separation part, a shell discharge part and a cotton discharging part, the separation part and the cotton discharging part include a cotton hooking mechanism, and the cotton hooking mechanism includes a rotating shaft, an outer ring plate and a telescopic hook assembly; the patent designs the cotton hooking mechanism, and the elastic telescopic rod can automatically extend and retract during the rotation of the cotton hooking mechanism, the cotton hooking mechanism in the separation part rotates at a high speed, can hook the cotton and throw out the broken shell, and after throwing out the broken shell, it can retract and no longer hook the cotton, effectively separating the broken shell and cotton, and at the same time, the cotton hooking mechanism near the separation part in the cotton discharging part rotates at a low speed, can transport the cotton, and when the cotton is transported to the hooking mechanism on the side, it can retract and no longer hook the cotton, so that the two adjacent cotton hooking mechanisms can rotate and transport the cotton, and will not tear the cotton, so as to avoid the cotton being in a flocculent state when the cotton is discharged.

[0004] This patent has many advantages, but still has some shortcomings: this patent uses two crushing rollers to crush the cotton with shells. Cotton has strong softness. When the crushing rollers rotate and squeeze the cotton, the cotton itself will shrink, making it difficult to crush the cotton shell, resulting in a decrease in the cotton shelling effect. Summary of the invention

[0005] The technical problem to be solved by the present invention is: how to improve the crushing effect of the husk of cotton with husk.

[0006] The present invention provides an agricultural cotton shelling machine, comprising a casing, a shell breaking part is arranged on the upper side of one end of the casing, the shell breaking part comprises a shell breaking shell body, a feed trough is arranged on the upper half of the shell breaking shell body, the groove walls on both sides of the feed trough are arranged at an inclination, a discharge port is arranged on the bottom of the feed trough, a mounting groove is arranged on the lower half of the shell breaking shell body, a crushing device for crushing the hulled cotton discharged from the discharge port is arranged in the mounting groove, the crushing device comprises an upper squeezing plate, a lower squeezing plate and a driving assembly for driving the upper squeezing plate and the lower squeezing plate to intermittently reciprocate and translate, the upper squeezing plate is provided with two, the lower squeezing plate is provided with two, and the front of the upper squeezing plate and the lower squeezing plate The parts are each provided with an extrusion block with a triangular cross-section, and an embedded groove matching the extrusion block is formed between two adjacent extrusion blocks. The driving assembly is provided with two, the two upper extrusion plates are symmetrically arranged in the installation groove, and a first drop channel is formed between the two upper extrusion plates, the two lower extrusion plates are symmetrically arranged in the installation groove, and the bottom of the upper extrusion plate is slidably matched with the top of the lower extrusion plate, and a second drop channel is formed between the two lower extrusion plates, and the two driving assemblies are symmetrically arranged on the broken shell body, the upper extrusion plate and the lower extrusion plate on the same side are transmission connected with a driving assembly, the bottom of the installation groove is provided with a drop port, and the top of the broken shell body is also provided with a discharge device for intermittently opening the discharge port.

[0007] Preferably, the driving assembly comprises a driving motor, a rotating shaft, a resistance block, a driving wheel and a first spring, a first gear is installed on the output end of the driving motor, a second gear is installed on one end of the rotating shaft, two resistance blocks are provided, a first resistance arc surface is provided at the end of the resistance block, four convex heads are symmetrically arranged in pairs and are in resistance with the resistance block on the driving wheel, a second resistance arc surface is provided on the convex head, a plurality of the first springs are provided, a plurality of guide rods are provided on the back of the upper extrusion plate and the lower extrusion plate, and a There are multiple guide seats that cooperate with the guide rods, a suspension is provided on the outer wall of the shell breaking shell, the drive motor is arranged on the suspension, the rotating shaft is rotatably arranged in the shell breaking shell, and the axis of the rotating shaft is located on the same horizontal plane as the bottom of the upper extrusion plate, the first gear is meshed with the second gear, two abutment blocks are respectively arranged on the back of the upper extrusion plate and the lower extrusion plate, the driving wheel is arranged on the rotating shaft, the first spring is sleeved on the guide rod, one end of the first spring is connected to the back of the upper extrusion plate or the back of the lower extrusion plate, and the other end of the first spring is connected to the guide seat.

[0008] Preferably, the extrusion blocks on the two upper extrusion plates are arranged opposite to each other, and the two lower extrusion plates have the same structure as the two upper extrusion plates.

[0009] Preferably, the extrusion block on one of the upper extrusion plates corresponds to the inner groove on the other upper extrusion plate, and the two lower extrusion plates have the same structure as the two upper extrusion plates.

[0010] Preferably, the discharge device comprises a carrying plate, a rotating motor, a plum blossom-shaped interference wheel and a blocking block for blocking the discharge port, the carrying plate is provided with a guide sleeve, the inner wall of the guide sleeve is provided with a guide groove, the top of the blocking block is provided with a slide rod matching with the guide sleeve, the outer wall of the slide rod is provided with a guide strip matching with the guide groove, the top of the slide rod is provided with a driven plate, the carrying plate is arranged on the top of the shell breaking shell, the rotating motor is arranged on the top of the carrying plate, the interference wheel is installed on the output end of the rotating motor, and the interference wheel conflicts with the bottom of the driven plate.

[0011] Preferably, the bottom of the blocking block is provided with two fitting surfaces which fit with the two side walls of the feed trough.

[0012] Preferably, the top of the blocking block is provided with two symmetrically arranged outer chamfers.

[0013] Preferably, mounting holes are arranged at equal intervals on the blocking block, connecting columns are arranged in the mounting holes, telescopic grooves are opened at both ends of the connecting columns, a telescopic rod is arranged in the telescopic groove and is slidably arranged therewith, the head end of the telescopic rod is provided with an arc surface, and the tail end of the telescopic rod is provided with a second spring.

[0014] The beneficial effects of the present invention are:

[0015] First, the present invention is an agricultural cotton shelling machine, which drives two upper extrusion plates to move relative to each other through two driving components to squeeze and crush the hulled cotton in the first drop channel, and drives two lower extrusion plates to move relative to each other through two driving components to squeeze and crush the hulled cotton in the second drop channel, and uses the tip of the extrusion block to squeeze the hulled cotton, so as to stably crush the shell, and the hulled cotton in the feed trough can be passed into the first drop channel through the discharge device, so as to realize automatic feeding. In summary, the present invention improves the crushing effect of the hull of hulled cotton.

[0016] Secondly, the present invention is an agricultural cotton shelling machine, which can make the upper extrusion plate or the lower extrusion plate perform stable reciprocating translation through the cooperation between the driving motor, the rotating shaft, the resistance block, the driving wheel and the first spring, and then the shelled cotton located in the first drop channel or the second drop channel can be squeezed and crushed, and the shell of the shelled cotton after two squeezes can be stably crushed.

[0017] Thirdly, the agricultural cotton hulling machine of the present invention can make the blocking block rise and fall by the mutual cooperation among the rotating motor, the resistance wheel, the guide sleeve, the slide rod and the driven plate, so that the objects can intermittently enter the discharge port, that is, realize the intermittent feeding into the first drop channel.

[0018] Fourthly, the agricultural cotton shelling machine of the present invention can automatically extend the telescopic rod by utilizing the cooperation of the telescopic rod and the second spring, and the telescopic rod can play a role in clearing the block when it is synchronously raised and lowered with the blocking block, thereby avoiding blockage of the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the present invention will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the agricultural cotton hulling machine of the present invention;

[0021] Figure 2 A cross-sectional view of a hull breaking portion of an agricultural cotton hulling machine according to the present invention;

[0022] Figure 3 The local structure of the shell breaking part is shown in Fig. Figure 1 ;

[0023] Figure 4 The local structure of the shell breaking part is shown in Fig. Figure 2 ;

[0024] Figure 5 It is a partial cross-sectional view of the shell breaking part.

[0025] Figure numerals: 1, casing; 2, shell breaking shell; 21, feed trough; 211, discharge port; 22, mounting slot; 221, discharge port; 23, guide seat; 24, suspension; 3, crushing device; 31, upper extrusion plate; 311, guide rod; 32, lower extrusion plate; 33, driving assembly; 331, driving motor; 332, rotating shaft; 333, resistance block; 334, driving wheel; 335, first spring; 336, first gear; 337, second gear; 338, first resistance arc surface; 339, convex head ; 330, second contact arc surface; 34, extrusion block; 35, embedded groove; 36, first drop channel; 37, second drop channel; 4, discharge device; 41, load-bearing plate; 411, guide sleeve; 412, slide rod; 413, guide strip; 414, driven plate; 42, rotating motor; 43, contact wheel; 44, blocking block; 441, fitting surface; 442, external chamfer; 443, mounting hole; 444, connecting column; 445, telescopic groove; 446, telescopic rod; 447, arc surface; 448, second spring. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] like Figures 1 to 5 As shown, a cotton shelling machine for agriculture includes a casing 1, a shell breaking part is provided on the upper side of one end of the casing 1, and the shell breaking part includes a shell breaking shell body 2, a feed trough 21 is provided on the upper half of the shell breaking shell body 2, and the groove walls on both sides of the feed trough 21 are inclined, and a discharge port 211 is provided at the bottom of the feed trough 21, and a mounting groove 22 is provided on the lower half of the shell breaking shell body 2, and a crushing device 3 for crushing the hulled cotton discharged from the discharge port 211 is provided in the mounting groove 22, and the crushing device 3 includes an upper squeezing plate 31, a lower squeezing plate 32 and a driving assembly 33 for driving the upper squeezing plate 31 and the lower squeezing plate 32 to intermittently reciprocate, two upper squeezing plates 31 are provided, and two lower squeezing plates 32 are provided, and the front parts of the upper squeezing plates 31 and the lower squeezing plates 32 are each provided with a squeezing plate with a triangular cross section. A pressing block 34, an embedded groove 35 matching the extrusion block 34 is formed between two adjacent extrusion blocks 34, two driving components 33 are provided, two upper extrusion plates 31 are symmetrically arranged in the installation groove 22, a first drop channel 36 is formed between the two upper extrusion plates 31, two lower extrusion plates 32 are symmetrically arranged in the installation groove 22, and the bottom of the upper extrusion plate 31 is slidably matched with the top of the lower extrusion plate 32, a second drop channel 37 is formed between the two lower extrusion plates 32, two driving components 33 are symmetrically arranged on the broken shell body 2, the upper extrusion plate 31 and the lower extrusion plate 32 on the same side are transmission connected with one driving component 33, a drop port 221 is provided at the bottom of the installation groove 22, and a discharge device 4 for intermittently opening the discharge port 211 is also provided on the top of the broken shell body 2.

[0028] The present invention also includes a separation part, a shell discharge part and a cotton discharge part. The cotton discharge part is arranged at the lower side of the other end of the casing 1, the separation part is arranged between the cotton discharge part and the shell breaking part, and the shell discharge part and the separation part are arranged in parallel and located above the cotton discharge part. The separation part, shell discharge part and cotton discharge part have the same structure as the separation part, shell discharge part and cotton discharge part of the prior art, and the principle is not explained here.

[0029] The shell of the shelled cotton can be automatically crushed by the crushing device 3. The two driving components 33 work simultaneously to drive the two upper squeezing plates 31 to move relative to each other, thereby changing the size of the first drop channel 36. The two driving components 33 work simultaneously and can also drive the two lower squeezing plates 32 to move relative to each other. Therefore, the size of the second drop channel 37 can also be changed. The driving component 33 includes a driving motor 331, a rotating shaft 332, a resistance block 333, a driving wheel 334 and a first spring 335. A first gear 336 is installed on the output end of the driving motor 331, and a second gear 337 is installed at one end of the rotating shaft 332. Two resistance blocks 333 are provided, and a first resistance arc surface 338 is provided at the end of the resistance block 333. Four convex heads 339 are symmetrically arranged in pairs and are in resistance with the resistance block 333 on the driving wheel 334. The convex head 339 is provided with a second The first spring 335 is provided with a plurality of the first springs 335, and the backs of the upper extrusion plate 31 and the lower extrusion plate 32 are provided with a plurality of guide rods 311. The groove wall of the mounting groove 22 is provided with a plurality of guide seats 23 cooperating with the guide rods 311. A suspension 24 is provided on the outer wall of the broken shell body 2. The driving motor 331 is arranged on the suspension 24. The rotating shaft 332 is rotatably arranged in the broken shell body 2, and the axis of the rotating shaft 332 is located on the same horizontal plane as the bottom of the upper extrusion plate 31. The first gear 336 is meshed with the second gear 337. The two friction blocks 333 are respectively arranged on the backs of the upper extrusion plate 31 and the lower extrusion plate 32. The driving wheel 334 is arranged on the rotating shaft 332. The first spring 335 is sleeved on the guide rod 311. One end of the first spring 335 is connected to the back of the upper extrusion plate 31 or the back of the lower extrusion plate 32, and the other end of the first spring 335 is connected to the guide seat 23.

[0030] One driving motor 331 cooperates with the first gear 336 and the second gear 337 to make the corresponding rotating shaft 332 rotate clockwise, and the other driving motor 331 cooperates with the first gear 336 and the second gear 337 to make the corresponding rotating shaft 332 rotate counterclockwise, and the rotating shaft 332 drives the driving wheel 334 to rotate synchronously, and a convex head 339 on the driving wheel 334 conflicts with the abutment block 333 on the back of the upper extrusion plate 31, and then the upper extrusion plate 31 can translate, and the first dropping channel 36 gradually shrinks, and the tip of the extrusion block 34 can squeeze the outer shell of the cotton and crush the outer shell, thereby improving the crushing effect. When the upper extrusion plate 31 translates, the guide rod 311 and the guide seat 23 are used to maintain balance, and the first abutment arc surface 338 and the second abutment arc surface 330 can make the convex head The convex head 339 can more smoothly rotate around the axis of the rotating shaft 332 while abutting against it. After the convex head 339 is separated from the abutment block 333 on the back of the upper extrusion plate 31, the elastic force of the first spring 335 can drive the upper extrusion plate 31 to return to its original position. During the recovery process, the cotton in the first drop channel 36 will fall into the second drop channel 37. After the first drop channel 36 returns to its original size, the convex head 339 gradually abuts against the abutment block 333 on the back of the lower extrusion plate 32. Then the lower extrusion plate 32 can also translate, and the second drop channel 37 gradually shrinks. During the shrinkage of the second drop channel 37, the next convex head 339 can abut against the abutment block 333 on the back of the upper extrusion plate 31, and the first drop channel 36 starts to shrink again. This cycle can be repeated until the shell of the cotton with shell can be completely crushed.

[0031] Furthermore, the extrusion blocks 34 on the two upper extrusion plates 31 are arranged opposite to each other, and the two lower extrusion plates 32 have the same structure as the two upper extrusion plates 31. When the shelled cotton enters the first drop channel 36 or the second drop channel 37, the tips of the two extrusion blocks 34 are located in the same horizontal plane, and the extrusion force on both sides of the shell is evenly distributed along the vertical line, and then the shell can be stably crushed.

[0032] Furthermore, the extrusion block 34 on one of the upper extrusion plates 31 corresponds to the inner groove on the other upper extrusion plate 31, and the two lower extrusion plates 32 have the same structure as the two upper extrusion plates 31. When the shelled cotton enters the first drop channel 36 or the second drop channel 37, the tip of one extrusion block 34 hits one side of the outer shell, and the other side of the outer shell hits the inner groove. The extrusion forces on both sides of the outer shell are arranged alternately along a vertical line, and then the outer shell can be stably crushed.

[0033] The discharge port 211 can be opened by the discharge device 4 so that the shelled cotton in the feed trough 21 can enter the first discharge channel 36. The discharge device 4 includes a supporting plate 41, a rotating motor 42, a plum blossom-shaped conflicting wheel 43 and a blocking block 44 for blocking the discharge port 211. A guide sleeve 411 is provided on the supporting plate 41, a guide slot is provided on the inner wall of the guiding sleeve 411, a slide rod 412 cooperating with the guiding sleeve 411 is provided on the top of the blocking block 44, a guide strip 413 cooperating with the guide slot is provided on the outer wall of the slide rod 412, a driven plate 414 is provided on the top of the slide rod 412, the supporting plate 41 is arranged on the top of the shell breaking shell 2, the rotating motor 42 is arranged on the top of the supporting plate 41, the conflicting wheel 43 is installed on the output end of the rotating motor 42, and the conflicting wheel 43 conflicts with the bottom of the driven plate 414.

[0034] The rotating motor 42 drives the contact wheel 43 to rotate, and the contact wheel 43 contacts the driven plate 414. After being contacted by the contact wheel 43, the driven plate 414 gradually rises, and the driven plate 414 drives the slide bar 412 to move up synchronously. The cooperation of the guide groove and the guide slide groove can prevent the slide bar 412 from deflecting. Then the slide bar 412 drives the blocking block 44 to move up, and the bottom end of the blocking block 44 and the feed trough 21 form a guiding channel that can introduce the shelled cotton into the discharge port 211. As the contact wheel 43 rotates, the blocking block 44 will use its own gravity to pull the driven plate 414 downward again, that is, the blocking block 44 blocks the discharge port 211 again, thus forming intermittent feeding into the first drop channel 36. Of course, when the discharge port 211 is opened, the first drop channel 36 is in an unreduced state.

[0035] Furthermore, the bottom of the blocking block 44 is provided with two fitting surfaces 441 that fit with the two side walls of the feed trough 21 , so as to limit the blocking position of the blocking block 44 .

[0036] Furthermore, two symmetrically arranged outer chamfers 442 are provided on the top of the blocking block 44, and the outer chamfers 442 are used to guide the shelled cotton to the two side walls of the feed trough 21, so as to facilitate the shelled cotton to enter the guide channel.

[0037] Furthermore, mounting holes 443 are arranged at equal intervals on the blocking block 44, and connecting columns 444 are arranged in the mounting holes 443. Telescopic grooves 445 are opened at both ends of the connecting columns 444, and a telescopic rod 446 is arranged in the telescopic groove 445 to be slidably arranged therewith, and a circular arc surface 447 is provided at the head end of the telescopic rod 446, and a second spring 448 is provided at the tail end of the telescopic rod 446. When the blocking block 44 rises, the second spring 448 can use the elastic force to resist the telescopic rod 446, so that the head end of the telescopic rod 446 can always resist the groove wall of the feed trough 21. When the blocking block 44 moves downward, the telescopic rod 446 can smoothly enter the telescopic groove 445 by using the contact between the circular arc surface 447 and the groove wall of the feed trough 21. All telescopic rods 446 can play a role in clearing the block 44 synchronously up and down to avoid blockage of the discharge port 211.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cotton hulling machine for agricultural use, comprising a casing (1), wherein a hull breaking portion is provided on the upper side of one end of the casing (1), characterized in that: The shell breaking part comprises a shell breaking shell (2), the upper half of the shell breaking shell (2) is provided with a feed trough (21), the two side walls of the feed trough (21) are inclined, the bottom of the feed trough (21) is provided with a discharge port (211), the lower half of the shell breaking shell (2) is provided with a mounting groove (22), a crushing device (3) for crushing the shelled cotton discharged from the discharge port (211) is arranged in the mounting groove (22), the crushing device (3) comprises an upper extrusion plate (31), a lower extrusion plate (32) and a driving assembly (33) for driving the upper extrusion plate (31) and the lower extrusion plate (32) to intermittently reciprocate, two upper extrusion plates (31) are provided, two lower extrusion plates (32) are provided, the front parts of the upper extrusion plates (31) and the lower extrusion plates (32) are each provided with an extrusion block (34) with a triangular cross section, and two adjacent extrusion blocks (34), an embedded groove (35) matching the extrusion block (34) is formed between the two upper extrusion plates (31) and the mounting groove (22), and two drive assemblies (33) are provided, the two upper extrusion plates (31) are symmetrically arranged in the mounting groove (22), a first drop channel (36) is formed between the two upper extrusion plates (31), the two lower extrusion plates (32) are symmetrically arranged in the mounting groove (22), and the bottom of the upper extrusion plate (31) is slidably matched with the top of the lower extrusion plate (32), and a second drop channel (37) is formed between the two lower extrusion plates (32), the two drive assemblies (33) are symmetrically arranged on the shell breaking shell (2), the upper extrusion plate (31) and the lower extrusion plate (32) on the same side are transmission-connected to one drive assembly (33), the bottom of the mounting groove (22) is provided with a drop port (221), and the top of the shell breaking shell (2) is also provided with a discharge device (4) for intermittently opening a discharge port (211).

2. The agricultural cotton hulling machine according to claim 1, characterized in that: The driving assembly (33) comprises a driving motor (331), a rotating shaft (332), a contact block (333), a driving wheel (334) and a first spring (335). A first gear (336) is installed on the output end of the driving motor (331). A second gear (337) is installed on one end of the rotating shaft (332). Two contact blocks (333) are provided. The end of the contact block (333) is provided with a first contact arc surface (338). The driving wheel (334) is provided with four convex heads (339) which are symmetrically arranged in pairs and contact with the contact blocks (333). The convex heads (339) are provided with a second contact arc surface (330). A plurality of first springs (335) are provided. The backs of the upper extrusion plate (31) and the lower extrusion plate (32) are both provided with a plurality of guide rods (311). The groove wall of the installation groove (22) is provided with a A plurality of guide seats (23) are provided to cooperate with the guide rod (311); a suspension (24) is provided on the outer wall of the shell breaking shell (2); the driving motor (331) is arranged on the suspension (24); the rotating shaft (332) is rotatably arranged in the shell breaking shell (2); the axis of the rotating shaft (332) and the bottom of the upper extrusion plate (31) are located on the same horizontal plane; the first gear (336) is meshed with the second gear (337); two abutment blocks (333) are respectively arranged on the back of the upper extrusion plate (31) and the lower extrusion plate (32); the driving wheel (334) is arranged on the rotating shaft (332); the first spring (335) is sleeved on the guide rod (311); one end of the first spring (335) is connected to the back of the upper extrusion plate (31) or the back of the lower extrusion plate (32); and the other end of the first spring (335) is connected to the guide seat (23).

3. The agricultural cotton hulling machine according to claim 2, characterized in that: The extrusion blocks (34) on the two upper extrusion plates (31) are arranged opposite to each other, and the two lower extrusion plates (32) have the same structure as the two upper extrusion plates (31).

4. The agricultural cotton hulling machine according to claim 2, characterized in that: The extrusion block (34) on one of the upper extrusion plates (31) corresponds to the inner groove on the other upper extrusion plate (31), and the two lower extrusion plates (32) have the same structure as the two upper extrusion plates (31).

5. The agricultural cotton hulling machine according to claim 1, characterized in that: The discharge device (4) comprises a bearing plate (41), a rotating motor (42), a plum blossom-shaped abutment wheel (43) and a blocking block (44) for blocking the discharge port (211). The bearing plate (41) is provided with a guide sleeve (411), the inner wall of the guide sleeve (411) is provided with a guide groove, the top of the blocking block (44) is provided with a slide bar (412) matched with the guide sleeve (411), the outer wall of the slide bar (412) is provided with a guide strip (413) matched with the guide groove, the top of the slide bar (412) is provided with a driven plate (414), the bearing plate (41) is arranged on the top of the shell breaking shell (2), the rotating motor (42) is arranged on the top of the bearing plate (41), the abutment wheel (43) is installed on the output end of the rotating motor (42), and the abutment wheel (43) abuts against the bottom of the driven plate (414).

6. The agricultural cotton hulling machine according to claim 5, characterized in that: The bottom of the blocking block (44) is provided with two fitting surfaces (441) that fit with the two side walls of the feed trough (21).

7. The agricultural cotton hulling machine according to claim 6, characterized in that: The top of the blocking block (44) is provided with two symmetrically arranged outer chamfers (442).

8. The agricultural cotton hulling machine according to claim 7, characterized in that: The blocking block (44) is provided with mounting holes (443) at equal intervals, a connecting column (444) is provided in the mounting hole (443), both ends of the connecting column (444) are provided with telescopic grooves (445), a telescopic rod (446) slidably arranged therein is provided in the telescopic groove (445), a circular arc surface (447) is provided at the head end of the telescopic rod (446), and a second spring (448) is provided at the tail end of the telescopic rod (446).

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