Straw screening device

Abstract

The utility model discloses a straw screening device which comprises an installation frame, a feeding port is formed in one side of the installation frame, a feeding roller is installed in the feeding port, a broken yeast separating screen is installed on the portion, on the lower side of the feeding roller, of the installation frame, a conveying channel is installed on the installation frame, and a straw screening mechanism is installed at the input end of the conveying channel. A straw screening roller is installed on the transition section of the conveying channel, a straw conveying roller is installed on the upper side of the conveying channel, an available straw outlet is further formed in the output end of the conveying channel, a waste outlet is formed in the position, at the bottom of the output end of the broken koji separating screen, of the mounting frame, and a power output mechanism is further installed on one side of the bottom of the mounting frame. And the power output mechanism is connected with the feeding roller, the broken yeast separating sieve, the straw screening mechanism, the straw screening roller and the straw conveying roller. According to the utility model, a mixture of broken yeast blocks and straw is mechanically screened, so that the effects of saving labor, improving the recovery rate of the yeast blocks and avoiding waste of raw materials are achieved, and the existing processing requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of rice straw screening, and particularly relates to a rice straw screening device. Background Art

[0002] The Maotai flavor is also known as the Maoxiang flavor, represented by the famous Maotai liquor at home and abroad, and belongs to the Daqu liquor category. In the koji-making stage of the traditional Maotai-flavor Baijiu production process, rice straw is required to separate koji embryos when entering the warehouse for fermentation and disassembling koji. When disassembling the koji, a small part of the koji blocks will break into small pieces and be mixed with the rice straw. At present, existing brewing enterprises mainly use manual selection by workers for screening, which not only results in low recovery efficiency of koji blocks, but also cannot meet the processing requirements, causing waste of raw materials and increasing production costs. Therefore, there is an urgent need for a rice straw screening device to solve the above problems. Content of the Utility Model

[0003] Aiming at the problems raised in the above background art, the purpose of the present utility model is to provide a rice straw screening device.

[0004] To achieve the above technical purpose, the technical solution adopted by the present utility model is as follows:

[0005] A rice straw screening device includes a mounting frame. One side of the mounting frame is provided with a feed inlet, and a feed roller is installed inside the feed inlet. The mounting frame is provided with a broken koji separation screen below the feed roller. One side of the top of the broken koji separation screen of the mounting frame is provided with a conveying channel. The input end of the conveying channel is provided with a rice straw screening mechanism. The transition section of the conveying channel is provided with a rice straw screening roller. The upper side of the conveying channel is provided with a rice straw conveying roller. The output end of the conveying channel is also provided with a usable straw outlet. The bottom of the output end of the broken koji separation screen of the mounting frame is provided with a waste outlet. One side of the bottom of the mounting frame is also provided with a power output mechanism, and the power output mechanism is connected to the feed roller, the broken koji separation screen, the rice straw screening mechanism, the rice straw screening roller, and the rice straw conveying roller.

[0006] Further defined, the feed roller includes a roller shaft, a roller frame is installed outside the roller shaft, several toothed plates are installed inside the roller frame, and the several toothed plates are evenly arranged inside the roller frame with the roller shaft as the center. Both sides of the roller shaft are provided with roller bearing seats, and the roller bearing seats are fixedly installed on the mounting frame. One side of the roller shaft is also connected with a roller transmission gear. Such a structural design is convenient for inputting the koji and straw, and preparing for screening the koji and straw.

[0007] Further defined, the broken koji separation sieve includes two sets of reciprocating staggered connecting rod groups. A number of separation sieve groups are installed between the two sets of reciprocating staggered connecting rod groups. Broken koji bearing seats are installed on both sides of the two sets of reciprocating staggered connecting rod groups. The broken koji bearing seats are fixedly installed on the mounting frame. A broken koji transmission gear is also connected to one side of the reciprocating staggered connecting rod group. Such a structural design facilitates the pulling and loosening of koji grass.

[0008] Further defined, the rice straw screening mechanism includes two fixed rods. Bearing seats are installed at both ends of the two fixed rods. The bearing seats are fixedly installed on the mounting frame. The fixed rods are connected with a number of first connecting rods. The other side of the number of first connecting rods is connected with a first rice straw screening hook. A transmission connecting rod frame is connected to the lower side of the first rice straw screening hook. A second connecting rod is installed between the two adjacent first connecting rods on the fixed rod. The other side of the second connecting rod is connected with a second rice straw screening hook. The lower side of the second rice straw screening hook is installed on the transmission connecting rod frame. Link bearing seats are installed on both sides of the transmission connecting rod frame. The link bearing seats are fixedly installed on the mounting frame. A screening transmission gear is also installed on one side of the transmission connecting rod frame. Such a structural design facilitates the screening of koji grass.

[0009] Further defined, the rice straw screening drum includes a screening shaft. Mounting plates are installed on both sides of the screening shaft. A number of screening frames are installed between the two mounting plates on both sides. A number of screening grass hooks are locked and installed on the screening frames through screws. A screening bearing seat is installed on the outside of the mounting plate on one side of the screening shaft. The screening bearing seat is fixedly installed on the mounting frame. A screening drum transmission gear is also installed on one side of the screening shaft. A number of screening shaft sleeves are rotatably installed on both sides of the mounting plates. Both sides of the screening frame are installed in the screening shaft sleeves. Screening bumps are installed on the outside of the screening shaft sleeves. The other side of the screening bumps is connected with a screening guide block. A screening cam is also fixedly installed on the outside of the mounting plate on one side of the screening shaft. A first screening guide groove is provided on the screening cam. The screening guide block is slidably arranged in the first screening guide groove. Such a structural design facilitates the further screening of the screened koji grass.

[0010] Further defined, the straw conveying roller includes a conveying shaft, side plates are installed on both sides of the conveying shaft, several cross beam frames are installed between the two side plates, several conveying grass hooks are installed on the cross beam frames by screwing and locking, a conveying bearing seat is installed on the outside of the side plate of the conveying shaft, the conveying bearing seat is fixedly installed on the mounting frame, a conveying drive gear is also installed on one side of the conveying shaft, several conveying shaft sleeves are rotatably installed on the two side plates, both sides of the cross beam frame are installed in the conveying shaft sleeves, a conveying convex block is installed on the outside of the conveying shaft sleeve, the other side of the conveying convex block is connected with a conveying guide block, a conveying cam is also fixedly installed on the outside of the side plate of the conveying shaft, a second screening guide groove is arranged on the conveying cam, and the conveying guide block is slidably arranged in the second screening guide groove. Such a structural design has the effect of conveying the screened curved grass.

[0011] Further defined, the power output mechanism includes a driving motor, a driving wheel is connected to the power output end of the driving motor, the driving wheel is connected with a driving belt, the other side of the driving belt is connected with a transmission wheel, the transmission wheel is connected with one of the broken-curve transmission gears, the broken-curve transmission gear connected with the transmission wheel is connected with a transmission chain, and the transmission chain is connected with the roller transmission gear, the screening roller transmission gear, the conveying transmission gear, the screening transmission gear and the other broken-curve transmission gear. Such a structural design is convenient for providing stable power output for use.

[0012] Further defined, several auxiliary connection transmission gears are also installed on the mounting frame, several of the auxiliary connection transmission gears are all connected with the transmission chain, a protective housing is installed on the outside of the mounting frame, and the driving wheel, the driving belt, the transmission wheel, the broken-curve transmission gear, the transmission chain, the roller transmission gear, the screening roller transmission gear, the conveying transmission gear, the screening transmission gear and the auxiliary connection transmission gear are all arranged in the protective housing. Such a structural design improves the transmission effect and is protected by the protective housing.

[0013] Further defined, the conveying channel includes an inner layer plate and an outer layer plate, a conveying groove is formed between the inner layer plate and the outer layer plate, the conveying channel is provided with clearance grooves corresponding to the first straw screening hook, the second straw screening hook, the screening grass hook and the conveying grass hook, and the first straw screening hook, the second straw screening hook, the screening grass hook and the conveying grass hook are movably arranged in the clearance grooves. Such a structural design enables the first straw screening hook, the second straw screening hook, the screening grass hook and the conveying grass hook not to interfere and get stuck during movement, improving the effect of stable movement.

[0014] Further defined, a control box is also installed on one side of the bottom of the mounting frame, and the control box is connected with the power output mechanism. Such a structural design is convenient for control operation.

[0015] The beneficial effects of the present utility model are as follows: The present utility model conducts mechanical automated feeding, pulling and loosening, screening, and conveying through a feeding roller, a broken koji separation sieve, a rice straw screening mechanism, a rice straw screening roller, and a rice straw conveying roller, and performs mechanized screening operations on the mixture of broken koji blocks and rice straw, thereby achieving the effects of saving labor, increasing the recovery rate of koji blocks, avoiding waste of raw materials, reducing production costs, and meeting existing processing requirements. Brief Description of the Drawings

[0016] The present utility model can be further illustrated by the non-limiting embodiments given in the drawings;

[0017] Figure 1 It is an axonometric structural schematic diagram of a rice straw screening device according to an embodiment of the present utility model;

[0018] Figure 2 It is a sectional structural schematic diagram of a rice straw screening device according to an embodiment of the present utility model;

[0019] Figure 3 It is a front structural schematic diagram of a rice straw screening device according to an embodiment of the present utility model;

[0020] Figure 4 It is a structural schematic diagram of a feeding roller of a rice straw screening device according to an embodiment of the present utility model;

[0021] Figure 5 It is a structural schematic diagram of a broken koji separation sieve of a rice straw screening device according to an embodiment of the present utility model;

[0022] Figure 6 It is a structural schematic diagram of a rice straw screening mechanism of a rice straw screening device according to an embodiment of the present utility model;

[0023] Figure 7 It is a structural schematic diagram of a rice straw screening roller of a rice straw screening device according to an embodiment of the present utility model;

[0024] Figure 8 It is a structural schematic diagram of a rice straw conveying roller of a rice straw screening device according to an embodiment of the present utility model;

[0025] Figure 9 It is a sectional structural schematic diagram of a conveying channel of a rice straw screening device according to an embodiment of the present utility model;

[0026] The main component symbols are explained as follows:

[0027] Mounting frame 1, feeding port 2;

[0028] Feeding roller 3, roller shaft 301, roller frame 302, toothed plate 303, roller bearing seat 304, roller transmission gear 305;

[0029] Crushed-curve separator screen 4, reciprocating and staggered connecting rod group 401, separator screen group 402, crushed-curve bearing seat 403, crushed-curve transmission gear 404;

[0030] Transport channel 5, inner layer plate 501, outer layer plate 502, transport trough 503;

[0031] Straw screening mechanism 6, fixed rod 601, bearing seat 602, first connecting rod 603, first straw screening hook 604, transmission connecting rod frame 605, second connecting rod 606, second straw screening hook 607, connecting rod bearing seat 608, screening transmission gear 609;

[0032] Straw screening drum 7, screening shaft 701, mounting plate 702, screening frame 703, screening straw hook 704, screening bearing seat 705, screening drum transmission gear 706, screening shaft sleeve 707, screening convex block 708, screening guide block 709, screening cam 710, first screening guide groove 711;

[0033] Straw transport drum 8, transport shaft 801, side plate 802, cross beam frame 803, transport straw hook 804, transport bearing seat 805, transport transmission gear 806, transport shaft sleeve 807, transport convex block 808, transport guide block 809, transport cam 810, second screening guide groove 811;

[0034] Usable straw outlet 9, waste outlet 10;

[0035] Power output mechanism 11, drive motor 1101, drive wheel 1102, transmission wheel 1103

[0036] Auxiliary connection transmission gear 12, protective housing 13, clearance groove 14, control box 15. Specific implementation mode

[0037] In order to enable those skilled in the art to better understand the present utility model, the technical solutions of the present utility model will be further described below with reference to the drawings and embodiments.

[0038] Example 1, as Figure 1 and Figure 2As shown, a straw screening device is provided, wherein a feed port 2 is provided on one side of a mounting frame 1, a feed roller 3 is provided in the feed port 2, a broken koji separation screen 4 is provided on the lower side of the feed roller 3 of the mounting frame 1, a conveying channel 5 is provided on the top side of the broken koji separation screen 4 of the mounting frame 1, a straw screening mechanism 6 is provided on the input end of the conveying channel 5, a straw screening roller 7 is provided on the transition section of the conveying channel 5, a straw conveying roller 8 is provided on the upper side of the conveying channel 5, a usable straw outlet 9 is also provided on the output end of the conveying channel 5, a waste outlet 10 is provided on the bottom of the output end of the broken koji separation screen 4 of the mounting frame 1, a power output mechanism 11 is also provided on the bottom side of the mounting frame 1, and the power output mechanism 11 is connected to the feed roller 3, the broken koji separation screen 4, the straw screening mechanism 6, the straw screening roller 7 and the straw conveying roller 8.

[0039] In this embodiment, when in use, the power output mechanism 11 is started, so that the power output mechanism 11 drives the feed roller 3, the broken koji separation screen 4, the straw screening mechanism 6, the straw screening roller 7 and the straw conveying roller 8 to move, and then the koji grass to be screened is put into the feed port 2, the feed speed is controlled by the feed roller 3, and the koji grass is input into the broken koji separation screen 4 to prepare for koji grass screening. The input koji grass enters the broken koji separation screen 4, and the broken koji separation screen 4 performs a pulling and loosening action on the koji grass, so as to achieve the effects of shaking off the koji blocks mixed between the koji grasses, combing the koji grasses loose and conveying the koji grasses, and then the koji grasses are put into the feed port 2. The loosened straw is screened by the broken straw separation screen 4 and transported to the straw screening mechanism 6. The straw screening mechanism 6 screens the straw, and the screened straw enters the transport channel 5, while the unusable straw enters the waste outlet 10 through the straw screening mechanism 6 for output. The usable straw is selected by the straw screening mechanism 6 and enters the straw screening drum 7. The straw is further screened by the straw screening drum 7 to ensure that the screening is more accurate, and the usable straw is transported to the straw screening drum 7, which is output by the straw screening drum 7 to the usable straw outlet 9, and then the usable straw is discharged to complete the straw screening work.

[0040] Embodiment 2, as Figure 4 As shown, this embodiment adds the following structure on the basis of embodiment 1, the feed roller 3 includes a roller shaft 301, a roller frame 302 is installed on the outer side of the roller shaft 301, a plurality of tooth plates 303 are installed in the roller frame 302, the plurality of tooth plates 303 are evenly arranged in the roller frame 302 with the roller shaft 301 as the center, roller bearing seats 304 are installed on both sides of the roller shaft 301, the roller bearing seats 304 are fixedly installed on the mounting frame 1, and a roller transmission gear 305 is also connected to one side of the roller shaft 301.

[0041] In this embodiment, when in use, the roller transmission gear 305 drives the roller shaft 301 to rotate in the roller bearing seat 304, so that the roller shaft 301 drives the roller frame 302, and the roller frame 302 drives the tooth plate 303 to rotate, so that the tooth plate 303 can input the koji in the feed port 2 into the crushed koji separation screen 4.

[0042] Embodiment 3, as Figure 5 As shown, this embodiment adds the following structure on the basis of embodiment 1, the broken bead separation screen 4 includes two groups of reciprocating staggered connecting rod groups 401, and a plurality of separation screen groups 402 are installed between the two groups of reciprocating staggered connecting rod groups 401. Broken bead bearing seats 403 are installed on both sides of the two groups of reciprocating staggered connecting rod groups 401, and the broken bead bearing seats 403 are fixedly installed on the mounting frame 1. One side of the reciprocating staggered connecting rod group 401 is also connected to a broken bead transmission gear 404.

[0043] In this embodiment, when in use, the respective reciprocating staggered connecting rod groups 401 are driven by the crushing gear 404 to rotate in the crushing bearing seat 403, so that the reciprocating staggered connecting rod group 401 drives the separation screen group 402 to perform a cyclic reciprocating staggered motion, thereby pulling and loosening the curved grass, thereby shaking off the curved blocks mixed among the curved grass, loosening the curved grass and conveying the curved grass.

[0044] Embodiment 4, as Figure 6 As shown, this embodiment adds the following structure on the basis of embodiment 1, the straw screening mechanism 6 includes two groups of fixed rods 601, bearing seats 602 are installed at both ends of the two groups of fixed rods 601, the bearing seats 602 are fixedly installed on the mounting frame 1, the fixed rods 601 are connected to a plurality of first connecting rods 603, the other side of the plurality of first connecting rods 603 is connected to a first straw screening hook 604, the lower side of the first straw screening hook 604 is connected to a transmission connecting rod frame 605, the fixed rod 601 is provided with a second connecting rod 606 between two adjacent first connecting rods 603, the other side of the second connecting rod 606 is connected to a second straw screening hook 607, the lower side of the second straw screening hook 607 is installed on the transmission connecting rod frame 605, connecting rod bearing seats 608 are installed on both sides of the transmission connecting rod frame 605, the connecting rod bearing seats 608 are fixedly installed on the mounting frame 1, and a screening transmission gear 609 is also installed on one side of the transmission connecting rod frame 605.

[0045] In this embodiment, during use, the screening drive gear 609 drives the drive link frame 605 to rotate along the link bearing seat 608, causing the drive link frame 605 to drive the first straw screening hooks 604 and the second straw screening hooks 607 on both sides to move. Under the action of the first link 603 and the second link 606, the first straw screening hooks 604 and the second straw screening hooks 607 simulate the action of manually screening straw to screen the curved straw. Moreover, the gap between the first link 603 and the second link 606 can be adjusted to select straws of different lengths for screening. The available straws are longer and enter the conveying channel 5 after being screened, while the unavailable straws are shorter and flow into the waste outlet 10 through the gap between the first straw screening hook 604 and the second straw screening hook 607.

[0046] Embodiment 5, as Figure 7 shown, on the basis of Embodiment 1, the following structure is added to this embodiment. The straw screening drum 7 includes a screening shaft 701. Installation plates 702 are installed on both sides of the screening shaft 701. A number of screening frames 703 are installed between the installation plates 702 on both sides. A number of screening straw hooks 704 are installed on the screening frames 703 by screwing. A screening bearing seat 705 is installed outside the installation plate 702 on the screening shaft 701. The screening bearing seat 705 is fixedly installed on the installation frame 1. A screening drum drive gear 706 is also installed on one side of the screening shaft 701. A number of screening shaft sleeves 707 are rotatably installed on both sides of the installation plates 702. Both sides of the screening frame 703 are installed in the screening shaft sleeves 707. A screening convex block 708 is installed outside the screening shaft sleeve 707. The other side of the screening convex block 708 is connected to a screening guide block 709. A screening cam 710 is fixedly installed outside the installation plate 702 on the screening shaft 701. A first screening guide groove 711 is provided on the screening cam 710. The screening guide block 709 is slidably arranged in the first screening guide groove 711.

[0047] In this embodiment, during use, the screening shaft 701 is driven to rotate on the screening bearing block 705 by the screening roller drive gear 706. The screening shaft 701 drives the mounting plates 702 on both sides, the mounting plates 702 drive the screening shaft sleeves 707, the screening shaft sleeves 707 drive the inner screening frames 703, and the screening frames 703 drive the screening straw hooks 704 to screen and convey the rice straw. At the same time, the screening shaft sleeves 707 drive the outer screening bumps 708, and the screening bumps 708 drive the screening guide blocks 709 to slide along the first screening guide groove 711 in the screening cam 710. As a result, when the screening frame 703 drives the screening straw hook 704 to rotate to a specific position, the screening straw hook 704 extends and retracts. The retraction of the screening straw hook 704 is to cooperate with the first screening guide groove 711 on the screening cam 710 to retract the screening straw hook 704 at a specific angle after completing the screening and straw conveying function, facilitating screening and straw separation. At the same time, retracting the screening straw hook 704 can also effectively reduce the space occupied by the rice straw screening roller 7.

[0048] Embodiment 6, as Figure 8 shown, on the basis of Embodiment 1, the following structure is added to this embodiment. The rice straw conveying roller 8 includes a conveying shaft 801. On both sides of the conveying shaft 801, side plates 802 are installed. Between the two side plates 802, a number of cross beam frames 803 are installed. A number of conveying straw hooks 804 are installed on the cross beam frames 803 by screwing. On the outer side of the side plates 802 of the conveying shaft 801, a conveying bearing block 805 is installed. The conveying bearing block 805 is fixedly installed on the mounting frame 1. On one side of the conveying shaft 801, a conveying drive gear 806 is also installed. A number of conveying shaft sleeves 807 are rotatably installed on both side plates 802. Both sides of the cross beam frame 803 are installed inside the conveying shaft sleeves 807. On the outer side of the conveying shaft sleeves 807, a conveying bump 808 is installed. On the other side of the conveying bump 808, a conveying guide block 809 is connected. On the outer side of the side plates 802 of the conveying shaft 801, a conveying cam 810 is fixedly installed. The conveying cam 810 is provided with a second screening guide groove 811. The conveying guide block 809 is slidably arranged in the second screening guide groove 811.

[0049] In this embodiment, during use, the conveying drive gear 806 drives the conveying shaft 801 to rotate within the conveying bearing block 805, causing the conveying shaft 801 to drive the side plates 802 on both sides. The side plates 802 drive the conveying shaft sleeve 807, the conveying shaft sleeve 807 drives the crossbeam frame 803 inside, and the crossbeam frame 803 drives the conveying straw hooks 804 to convey the rice straw. At the same time, the conveying shaft sleeve 807 drives the conveying convex block 808 on the outside, and the conveying convex block 808 drives the conveying guide block 809 to slide along the second screening guide groove 811 inside the conveying cam 810. As a result, when the crossbeam frame 803 drives the conveying straw hooks 804 to rotate to a specific position, the conveying straw hooks 804 extend and contract. The contraction of the conveying straw hooks 804 is to cooperate with the second screening guide groove 811 on the conveying cam 810 in terms of stroke after completing the straw conveying function, so as to retract the conveying straw hooks 804 at a specific angle, which is convenient for straw threshing. At the same time, contracting the conveying straw hooks 804 can also effectively reduce the space occupied by the rice straw conveying drum 8. The output rice straw is discharged from the straw outlet 9.

[0050] Embodiment 7, as Figure 3 and Figure 5 shown, on the basis of Embodiment 1, the following structure is added to this embodiment. The power output mechanism 11 includes a driving motor 1101. The power output end of the driving motor 1101 is connected with a driving wheel 1102. The driving wheel 1102 is connected with a driving belt. The other side of the driving belt is connected with a transmission wheel 1103. The transmission wheel 1103 is connected with one of the crushing and bending transmission gears 404. The crushing and bending transmission gear 404 connected with the transmission wheel 1103 is connected with a transmission chain. The transmission chain is connected with the drum transmission gear 305, the screening drum transmission gear 706, the conveying drive gear 806, the screening drive gear 609, and the other crushing and bending transmission gear 404.

[0051] In this embodiment, during use, by starting the driving motor 1101, the driving motor 1101 drives the driving wheel 1102, the driving wheel 1102 drives the driving belt, the driving belt drives the transmission wheel 1103, and the transmission wheel 1103 drives one of the crushing and bending transmission gears 404 to rotate, causing the crushing and bending transmission gear 404 to drive the transmission chain. The transmission chain drives the drum transmission gear 305, the screening drum transmission gear 706, the conveying drive gear 806, the screening drive gear 609, and the other crushing and bending transmission gear 404 to perform rotational motion work in sequence.

[0052] Embodiment 8, as Figure 1 and Figure 3As shown in the figure, the following structure is added to this embodiment on the basis of Embodiment 1. A number of auxiliary connection drive gears 12 are also installed on the mounting frame 1. All the auxiliary connection drive gears 12 are connected to the drive chain. A protective housing 13 is installed on the outer side of the mounting frame 1. The drive wheel 1102, the drive belt, the drive gear 1103, the broken-curve drive gear 404, the drive chain, the roller drive gear 305, the screening roller drive gear 706, the conveying drive gear 806, the screening drive gear 609, and the auxiliary connection drive gears 12 are all arranged inside the protective housing 13.

[0053] In this embodiment, during use, the transmission effect of the drive chain is improved by the auxiliary connection drive gears 12, and the drive wheel 1102, the drive belt, the drive gear 1103, the broken-curve drive gear 404, the drive chain, the roller drive gear 305, the screening roller drive gear 706, the conveying drive gear 806, the screening drive gear 609, and the auxiliary connection drive gears 12 are protected by the protective housing 13, extending their service life.

[0054] Embodiment 9, as Figure 9 As shown in the figure, the following structure is added to this embodiment on the basis of Embodiment 1. The conveying channel 5 includes an inner layer plate 501 and an outer layer plate 502. A conveying groove 503 is formed between the inner layer plate 501 and the outer layer plate 502. The conveying channel 5 is provided with clearance grooves 14 corresponding to the first straw screening hook 604, the second straw screening hook 607, the screening straw hook 704, and the conveying straw hook 804. The first straw screening hook 604, the second straw screening hook 607, the screening straw hook 704, and the conveying straw hook 804 are movably arranged in the clearance grooves 14.

[0055] In this embodiment, during use, the clearance grooves 14 limit the movement of the first straw screening hook 604, the second straw screening hook 607, the screening straw hook 704, and the conveying straw hook 804, preventing interference and jamming during movement and improving the effect of stable movement.

[0056] Embodiment 10, as shown in 1, the following structure is added to this embodiment on the basis of Embodiment 1. A control box 15 is also installed on one side of the bottom of the mounting frame 1. The control box 15 is connected to the power output mechanism 11.

[0057] In this embodiment, during use, the output power of the power output mechanism 11 can be controlled through the control box 15 to facilitate the control of the subsequent working speed.

[0058] The above embodiments are only used to exemplarily illustrate the principles and effects of the present utility model, rather than to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A straw screening device, characterized in that: The invention comprises a mounting frame (1), a feed port (2) being mounted on one side of the mounting frame (1), a feed roller (3) being mounted in the feed port (2), a broken koji separation screen (4) being mounted on the lower side of the feed roller (3) of the mounting frame (1), a conveying channel (5) being mounted on the top side of the broken koji separation screen (4) of the mounting frame (1), a straw screening mechanism (6) being mounted on the input end of the conveying channel (5), a straw screening roller (7) being mounted on the transition section of the conveying channel (5), and a straw screening mechanism (6) being mounted on the input end of the conveying channel (5). A straw conveying roller (8) is installed on the upper side of the conveying channel (5), and a straw outlet (9) is also provided at the output end of the conveying channel (5). A waste outlet (10) is installed at the bottom of the output end of the broken koji separation screen (4) on the mounting frame (1), and a power output mechanism (11) is also installed on one side of the bottom of the mounting frame (1). The power output mechanism (11) is connected to the feed roller (3), the broken koji separation screen (4), the straw screening mechanism (6), the straw screening roller (7) and the straw conveying roller (8).

2. A straw screening device according to claim 1, characterized in that: The feeding roller (3) comprises a roller shaft (301), a roller frame (302) is installed on the outer side of the roller shaft (301), a plurality of tooth plates (303) are installed in the roller frame (302), and the plurality of tooth plates (303) are evenly arranged in the roller frame (302) with the roller shaft (301) as the center of the circle, roller bearing seats (304) are installed on both sides of the roller shaft (301), and the roller bearing seats (304) are fixedly installed on the mounting frame (1), and a roller transmission gear (305) is also connected to one side of the roller shaft (301).

3. A straw screening device according to claim 2, characterized in that: The crushed bead separation screen (4) comprises two groups of reciprocating staggered connecting rod groups (401), a plurality of separation screen groups (402) are installed between the two groups of the reciprocating staggered connecting rod groups (401), crushed bead bearing seats (403) are installed on both sides of the two groups of the reciprocating staggered connecting rod groups (401), the crushed bead bearing seats (403) are fixedly installed on the mounting frame (1), and one side of the reciprocating staggered connecting rod group (401) is also connected to a crushed bead transmission gear (404).

4. A straw screening device according to claim 3, characterized in that: The straw screening mechanism (6) comprises two groups of fixed rods (601), bearing seats (602) are installed at both ends of the two groups of fixed rods (601), the bearing seats (602) are fixedly installed on the mounting frame (1), the fixed rods (601) are connected to a plurality of first connecting rods (603), the other side of the plurality of first connecting rods (603) are connected to a first straw screening hook (604), the lower side of the first straw screening hook (604) is connected to a transmission connecting rod frame (605), and the fixed rods (601) are connected to the two A second connecting rod (606) is installed between adjacent first connecting rods (603); the other side of the second connecting rod (606) is connected to a second straw screening hook (607); the lower side of the second straw screening hook (607) is installed on a transmission connecting rod frame (605); connecting rod bearing seats (608) are installed on both sides of the transmission connecting rod frame (605); the connecting rod bearing seats (608) are fixedly installed on the mounting frame (1); and a screening transmission gear (609) is also installed on one side of the transmission connecting rod frame (605).

5. A straw screening device according to claim 4, characterized in that: The straw screening drum (7) comprises a screening shaft (701), mounting plates (702) are mounted on both sides of the screening shaft (701), a plurality of screening frames (703) are mounted between the mounting plates (702) on both sides, a plurality of straw screening hooks (704) are mounted on the screening frames (703) by means of screw locking, a screening bearing seat (705) is mounted on the outer side of the mounting plate (702) of the screening shaft (701), the screening bearing seat (705) is fixedly mounted on the mounting frame (1), a screening drum transmission gear (706) is also mounted on one side of the screening shaft (701), and the mounting plates (702) on both sides are mounted on the screening frames (703). The mounting plate (702) is also rotatably mounted with a plurality of screening sleeves (707). Both sides of the screening frame (703) are mounted in the screening sleeves (707). A screening protrusion (708) is mounted on the outer side of the screening sleeve (707). The other side of the screening protrusion (708) is connected with a screening guide block (709). The screening shaft (701) is also fixedly mounted with a screening cam (710) on the outer side of the mounting plate (702). The screening cam (710) is provided with a first screening guide groove (711). The screening guide block (709) is slidably arranged in the first screening guide groove (711).

6. A straw screening device according to claim 5, characterized in that: The straw conveying roller (8) comprises a conveying shaft (801), side plates (802) are installed on both sides of the conveying shaft (801), a plurality of crossbeam frames (803) are installed between the side plates (802) on both sides, a plurality of straw conveying hooks (804) are installed on the crossbeam frames (803) by screw locking, a conveying bearing seat (805) is installed on the outer side of the side plates (802) of the conveying shaft (801), the conveying bearing seat (805) is fixedly installed on the mounting frame (1), a conveying transmission gear (806) is also installed on one side of the conveying shaft (801), and the side plates (802) on both sides are installed on the conveying shaft (801). The side plate (802) is also rotatably mounted with a plurality of conveying sleeves (807), the two sides of the crossbeam frame (803) are mounted in the conveying sleeves (807), the outer side of the conveying sleeves (807) is mounted with a conveying protrusion (808), the other side of the conveying protrusion (808) is connected with a conveying guide block (809), the conveying shaft (801) is also fixedly mounted with a conveying cam (810) on the outer side of the side plate (802), the conveying cam (810) is provided with a second screening guide groove (811), and the conveying guide block (809) is slidably arranged in the second screening guide groove (811).

7. A straw screening device according to claim 6, characterized in that: The power output mechanism (11) comprises a driving motor (1101), the power output end of the driving motor (1101) is connected to a driving wheel (1102), the driving wheel (1102) is connected to a driving belt, the other side of the driving belt is connected to a transmission wheel (1103), the transmission wheel (1103) is connected to the broken bead transmission gear (404) on one side, the broken bead transmission gear (404) connected to the transmission wheel (1103) is connected to a transmission chain, and the transmission chain is connected to a drum transmission gear (305), a screening drum transmission gear (706), a conveying transmission gear (806), a screening transmission gear (609) and the broken bead transmission gear (404) on the other side.

8. The straw screening device according to claim 7, characterized in that: A plurality of auxiliary connecting transmission gears (12) are also installed on the mounting frame (1), and the plurality of auxiliary connecting transmission gears (12) are all connected to the transmission chain. A protective shell (13) is installed on the outer side of the mounting frame (1), and the driving wheel (1102), the driving belt, the transmission wheel (1103), the crushing transmission gear (404), the transmission chain, the drum transmission gear (305), the screening drum transmission gear (706), the conveying transmission gear (806), the screening transmission gear (609) and the auxiliary connecting transmission gears (12) are all arranged in the protective shell (13).

9. A straw screening device according to claim 8, characterized in that: The conveying channel (5) comprises an inner plate (501) and an outer plate (502), a conveying groove (503) is formed between the inner plate (501) and the outer plate (502), and the conveying channel (5) is provided with an air-avoiding groove (14) at positions corresponding to the first straw screening hook (604), the second straw screening hook (607), the screening grass hook (704) and the conveying grass hook (804), and the first straw screening hook (604), the second straw screening hook (607), the screening grass hook (704) and the conveying grass hook (804) are movably arranged in the air-avoiding groove (14).

10. A straw screening device according to claim 9, characterized in that: A control box (15) is also installed on one side of the bottom of the mounting frame (1), and the control box (15) is connected to the power output mechanism (11).

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