Biochemical fertilizer raw material pretreatment equipment

Abstract

The utility model provides biological chemical fertilizer raw material pretreatment equipment, and relates to the field of chemical fertilizer production. The biological fertilizer raw material pretreatment equipment comprises a bottom plate, an adjusting mechanism and a replacing mechanism, the left side of the top of the bottom plate is fixedly connected with a loosening mechanism, the loosening mechanism comprises connecting rods and clamping plates, the connecting rods are arranged on the two sides of the upper portion of the bottom plate, and the tops of the clamping plates are fixedly connected with the bottoms of the connecting rods. According to the biological fertilizer raw material pretreatment equipment, the loosening mechanism is arranged, an output shaft of a second motor on the side face of a supporting column at the top of a left inclined plate rotates to drive a two-way screw to rotate, and the two-way screw rotates to drive a sliding rod at the top and a threaded ring slidably connected with a sliding groove formed in a top cover to move; the threaded ring moves to drive the clamping plates at the bottoms of the connecting rods to move oppositely to extrude the raw materials in a flat state to be in a loose state, the possibility of caking of the crushed raw materials is reduced, the raw material pretreatment effect and the effect when the crushed raw materials are put into production are guaranteed, and the cost performance of pretreatment equipment is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fertilizer production, and specifically to a biofertilizer raw material pretreatment device. Background Art

[0002] Biofertilizers are compound fertilizers containing a variety of microorganisms. They are made by artificially cultivating a variety of beneficial microorganisms. Aside from a few liquid fertilizers, solid biofertilizers are the most common type. Based on the raw materials and carriers, they are categorized as compound biofertilizers, active biofertilizers, and humic acid biofertilizers.

[0003] Patent No. CN207929294U discloses a pretreatment device for bagged fertilizer raw materials. This device crushes the bagged agglomerated fertilizer raw materials without unpacking them, facilitating feeding. The crushing process does not generate dust, and the device has the advantages of high crushing speed, low workload, and zero waste. However, while this device reduces the possibility of dust generation during fertilizer raw material pretreatment, it only crushes the raw materials by pressing them up and down. If the crushed raw materials are not put into production in a timely manner and are left for a long time, they will agglomerate, affecting the effectiveness of the subsequent raw materials when put into fertilizer production, thus reducing the effectiveness of the fertilizer raw material pretreatment process. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the present application provides a biofertilizer raw material pretreatment device to solve the problems mentioned in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present application is implemented through the following technical solutions: a biological fertilizer raw material pretreatment equipment, including a base plate, an adjustment mechanism for adjusting the distance to adapt to fertilizer raw materials of different thicknesses, and a replacement mechanism for fertilizer raw materials that is convenient for replacing different rollers to adapt to different crushing requirements. A loosening mechanism for clamping the crushed bagged fertilizer raw materials to keep them in a loose state is fixedly connected to the left side of the top of the base plate. The loosening mechanism includes a connecting rod and a splint. The connecting rod is arranged on both sides above the base plate. The top of the splint is fixedly connected to the bottom of the connecting rod, the bottom of the adjustment mechanism is fixedly connected to the middle of the top of the base plate, and the side of the replacement mechanism is fixedly connected to the side of the adjustment mechanism.

[0008] By adopting the above technical solution, the clamping plates at the bottom of the connecting rod can be moved toward each other to clamp and squeeze the flat bagged fertilizer raw materials, thereby preventing the raw materials pressed up and down from agglomerating and keeping them in a loose state.

[0009] Preferably, the loosening mechanism also includes a left inclined plate and a support column, the bottom of the left inclined plate is fixedly connected to the left side of the top of the base plate, the bottom of the support column is fixedly connected to the top of the left inclined plate, the front side of the support column is fixedly connected to a second motor, and the output shaft of the second motor is fixedly connected to a bidirectional screw.

[0010] By adopting the above technical solution, the left inclined plate can be used to facilitate the crushed bagged fertilizer raw materials to slide to both sides of the clamping plate under the influence of gravity, and the rotation of the second motor output shaft drives the bidirectional screw to rotate, providing power for the operation of the loosening mechanism.

[0011] Preferably, the loosening mechanism also includes a threaded ring and a top cover, the threaded ring is threadedly connected to the surface of the bidirectional screw, the top of the threaded ring is fixedly connected to a sliding rod, the bottom of the threaded ring is fixedly connected to the top of the connecting rod, the side of the top cover is fixedly connected to the top of the support column, and a sliding groove is provided at the bottom of the top cover, and the sliding groove is slidably connected to the sliding rod.

[0012] By adopting the above technical solution, the sliding connection between the sliding rod at the top of the thread ring and the sliding groove opened in the top cover can be utilized to convert the rotation of the thread ring driven by the rotating bidirectional screw into horizontal movement, the horizontally moving thread ring drives the connecting rod to move, and the movement of the connecting rod drives the splint to move to disperse the crushed and flattened fertilizer raw materials.

[0013] Preferably, a right inclined plate is fixedly connected to the right side of the top of the bottom plate to facilitate the bagged fertilizer raw materials to slide to the left under the influence of their own gravity, and baffles are fixedly connected to the front and rear sides of the top of the right inclined plate to prevent the bagged fertilizer raw materials from sliding to the left from moving out of the right inclined plate.

[0014] By adopting the above technical solution, the right inclined plate connected with the baffle can be used to facilitate the bagged fertilizer raw materials to slide toward the crushing mechanism under the influence of gravity.

[0015] Preferably, the adjustment mechanism includes a support plate and a fixed plate, the bottom of the support plate is fixedly connected to the middle of the top of the base plate, the bottom of the fixed plate is fixedly connected to the top of the support plate, the top of the fixed plate is fixedly connected to an electric telescopic rod, the top of the electric telescopic rod is fixedly connected to a top plate, and the top of the top plate is fixedly connected to an upper plate. There are two adjustment mechanisms and they are symmetrically arranged.

[0016] By adopting the above technical solution, the electric telescopic rod on the top of the fixed plate on the top of the support plate can be used to extend and retract to drive the upper plate on the top of the top plate to rise and fall, thereby achieving the purpose of adjusting the distance between the upper pressing roller and the lower pressing roller, making the fertilizer raw material pretreatment equipment suitable for bagged fertilizer raw materials of different weights and thicknesses.

[0017] Preferably, the replacement mechanism includes an outer arc plate and an arc groove, the outer arc plate is fixedly connected to the support plate and the upper plate, the arc groove is opened on the side of the outer arc plate, the arc groove is slidably connected to the inner arc plate, and limiting holes are opened on one side of the inner arc plate and the outer arc plate, and a limiting rod is slidably connected in the limiting hole, the top of the limiting rod is fixedly connected to a spring, and the bottom of the spring is fixedly connected to the top left side of the inner arc plate. The number of the replacement mechanisms is four and they are symmetrically arranged.

[0018] By adopting the above technical solution, the limit rod can be moved upward to drive the spring to extend and disengage from the limit hole at the same time, and the inner arc plate located in the arc groove can be rotated, and the upper pressure roller and the lower pressure roller that are in contact with the inner wall of the outer arc plate can be taken out and replaced, thereby achieving the purpose of using different applicable pressure rollers for different fertilizer raw materials and improving the pretreatment effect of the fertilizer raw materials.

[0019] Preferably, a crushing mechanism for crushing the bagged fertilizer raw materials is fixedly connected to the front side of the upper plate, and the crushing mechanism includes a first motor and an upper pressing roller. The first motor is fixedly connected to the front side of the upper plate, and the output shaft of the first motor is fixedly connected to a clamping block. The side surfaces at both ends of the upper pressing roller are in contact with the inner wall of the outer arc-shaped plate, and a clamping groove is provided at the front end of the upper pressing roller, and the clamping groove is in contact with the side surface of the clamping block.

[0020] By adopting the above technical solution, the first motor output shaft can be used to rotate the clamping block, and the rotation of the clamping block drives the upper pressing roller with a clamping slot to rotate, thereby pressing the upper part of the bagged fertilizer raw material to crush it.

[0021] Preferably, the crushing mechanism further comprises a lower pressing roller, and the side surfaces at both ends of the lower pressing roller are in contact with the inner wall of the outer arc-shaped plate on the side surface of the support plate.

[0022] By adopting the above technical solution, the lower pressing roller can be used to press the lower part of the bagged fertilizer raw material driven to the left by the rotation of the upper pressing roller, and the lower pressing roller and the upper pressing roller cooperate to crush the bagged fertilizer raw material.

[0023] (3) Beneficial effects

[0024] This application provides a biofertilizer raw material pretreatment device. The beneficial effects are as follows:

[0025] 1. The bio-fertilizer raw material pretreatment equipment is provided with a loosening mechanism. The second motor output shaft on the side of the support column at the top of the left inclined plate rotates to drive the bidirectional screw to rotate. The rotation of the bidirectional screw drives the thread ring that is slidably connected to the sliding groove of the top sliding rod and the top cover to move. The movement of the thread ring drives the clamping plates at the bottom of the connecting rod to move toward each other, thereby squeezing the flat raw materials into a loose state, reducing the possibility of agglomeration of the crushed raw materials, ensuring the effect of raw material pretreatment and the effect of the crushed raw materials when put into production, and improving the cost-effectiveness of using the pretreatment equipment.

[0026] 2. The bio-fertilizer raw material pretreatment equipment is provided with an adjustment mechanism. The electric telescopic rod on the top of the fixed plate on the top of the support rod is extended and retracted to drive the top plate to rise and fall. The lifting of the top plate drives the upper plate to rise and fall, and the distance between the upper pressing roller and the lower pressing roller is adjusted. This expands the thickness range of the bagged fertilizer raw materials that can be processed by the pretreatment equipment and improves the cost-effectiveness of the pretreatment equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation scheme of the present invention or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 This is a schematic diagram of the rear view and top view of the external structure of this application;

[0029] Figure 2 This is a schematic diagram of the external structure of this application when viewed from the left and upward;

[0030] Figure 3 This is an enlarged schematic diagram of the structure of Part A of this application;

[0031] Figure 4 This is an enlarged schematic diagram of the structure of Part B of this application;

[0032] Figure 5 This is a schematic diagram of the replacement mechanism structure from the rear and top view for this application;

[0033] Figure 6 This is an enlarged schematic diagram of the structure of Part C of this application;

[0034] Figure 7 This is a schematic diagram of the crushing mechanism part of the present application from the left side and top view.

[0035] In the figure: 1. bottom plate; 2. right inclined plate; 3. baffle; 4. adjusting mechanism; 401. support plate; 402. fixed plate; 403. electric telescopic rod; 404. top plate; 405. upper plate; 5. replacement mechanism; 501. outer arc plate; 502. arc groove; 503. inner arc plate; 504. limiting hole; 505. limiting rod; 506. spring; 6. crushing mechanism; 601. first motor; 602. block; 603. upper pressure roller; 604. slot; 605. lower pressure roller; 7. loosening mechanism; 701. left inclined plate; 702. support column; 703. second motor; 704. bidirectional screw; 705. thread ring; 706. slide rod; 707. fixed cover; 708. slide groove; 709. connecting rod; 710. splint. DETAILED DESCRIPTION

[0036] It should be noted that in the description of the embodiments of the present application, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are all based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present application. The terms "install", "connect", and "connected" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrally connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The present application will be further described in detail below through the accompanying drawings and examples.

[0038] Reference Figure 2 and Figure 4 , the embodiment of the present application provides a bio-fertilizer raw material pretreatment device, including a base plate 1, an adjustment mechanism 4 for adjusting the distance to adapt to fertilizer raw materials of different thicknesses, and a replacement mechanism 5 for facilitating the replacement of different rollers to adapt to fertilizer raw materials with different crushing requirements. The top left side of the base plate 1 is fixedly connected to a loosening mechanism 7 for clamping the crushed bagged fertilizer raw materials to keep them in a loose state. The loosening mechanism 7 includes a connecting rod 709 and a clamping plate 710. The connecting rod 709 is arranged on both sides above the base plate 1. The top of the clamping plate 710 is fixedly connected to the bottom of the connecting rod 709. The left side of the top of the base plate 1 is fixedly connected to a left inclined plate 701. The top of the left inclined plate 701 is fixedly connected to a support column 702. The front side of the support column 702 is fixedly connected to a second motor 703. The output shaft of the second motor 703 is fixedly connected to a bidirectional screw 704. The surface of the bidirectional screw 704 has a thread. It is connected with a thread ring 705, and a sliding rod 706 is fixedly connected to the top of the thread ring 705. The bottom of the thread ring 705 is fixedly connected to the top of the connecting rod 709. The top of the support column 702 is fixedly connected with a top cover 707. A sliding groove 708 is provided at the bottom of the top cover 707. The sliding groove 708 is slidingly connected to the sliding rod 706. The bottom of the adjustment mechanism 4 is fixedly connected to the middle of the top of the base plate 1. The side of the replacement mechanism 5 is fixedly connected to the side of the adjustment mechanism 4. The output shaft of the second motor 703 on the side of the support column 702 at the top of the left inclined plate 701 rotates to drive the bidirectional screw 704 to rotate. The rotation of the bidirectional screw 704 drives the thread ring 705 that is slidably connected to the sliding rod 706 at the top and the sliding groove 708 opened in the top cover 707 to move. The movement of the thread ring 705 drives the splint 710 at the bottom of the connecting rod 709 to move toward each other to squeeze the flat raw materials and make them in a loose state.

[0039] Reference Figure 1 and Figure 2 In one aspect of this embodiment, a right inclined plate 2 is fixedly connected to the right side of the top of the bottom plate 1 to facilitate the bagged fertilizer raw materials to slide to the left under the influence of their own gravity. Baffles 3 are fixedly connected to the front and rear sides of the top of the right inclined plate 2 to prevent the bagged fertilizer raw materials from sliding to the left and moving out of the right inclined plate 2. The bagged fertilizer raw materials move toward the crushing mechanism 6 along the right inclined plate 2 with the baffles 3 fixed on the side under the influence of gravity.

[0040] Reference Figure 2 and Figure 3 In one aspect of this embodiment, the adjustment mechanism 4 includes a support plate 401 and a fixed plate 402. The bottom of the support plate 401 is fixedly connected to the middle of the top of the base plate 1, the bottom of the fixed plate 402 is fixedly connected to the top of the support plate 401, the top of the fixed plate 402 is fixedly connected to an electric telescopic rod 403, the top of the electric telescopic rod 403 is fixedly connected to a top plate 404, and the top of the top plate 404 is fixedly connected to an upper plate 405. There are two adjustment mechanisms 4 and they are symmetrically arranged. The electric telescopic rod 403 on the top of the fixed plate 402 on the top of the support plate 401 is extended and retracted to drive the top plate 404 to rise and fall, and the lifting of the top plate 404 drives the upper plate 405 to rise and fall, thereby adjusting the distance between the upper pressure roller 603 and the lower pressure roller 605.

[0041] Reference Figure 5 and Figure 6 In one aspect of this embodiment, the replacement mechanism 5 includes an outer arc plate 501 and an arc groove 502. The outer arc plate 501 is fixedly connected to the support plate 401 and the upper plate 405. The arc groove 502 is provided on the side of the outer arc plate 501. The arc groove 502 is slidably connected to the inner arc plate 503. A limiting hole 504 is provided on one side of the inner arc plate 503 and the outer arc plate 501. A limiting rod 505 is slidably connected in the limiting hole 504. A spring 506 is fixedly connected to the top of the limiting rod 505. The bottom of the spring 506 is fixed to the inner The top left side of the arc plate 503 is fixedly connected, and the number of replacement mechanisms 5 is four and symmetrically arranged. The upper pressure roller 603 and the lower pressure roller 605 are placed on the inner wall surface of the outer arc plate 501, and the limit rod 505 is moved up to drive the spring 506 to extend, and the inner arc plate 503 in the arc groove 502 is controlled to slide toward the limit hole 504 to the bottom and fit the top right side of the outer arc plate 501. Release the controlled limit rod 505 so that it passes through the limit hole 504 under the elastic force of the spring 506, and the upper pressure roller 603 and the lower pressure roller 605 are fixed in place.

[0042] Reference Figure 3 、 Figure 5 and Figure 7In one aspect of this embodiment, a crushing mechanism 6 for crushing the bagged fertilizer raw materials is fixedly connected to the front side of the upper plate 405. The crushing mechanism 6 includes a first motor 601 and an upper pressing roller 603. The first motor 601 is fixedly connected to the front side of the upper plate 405. The output shaft of the first motor 601 is fixedly connected to a clamping block 602. The side surfaces of both ends of the upper pressing roller 603 are in contact with the inner wall of the outer arc-shaped plate 501. A clamping slot 604 is provided at the front end of the upper pressing roller 603. The clamping slot 604 is in contact with the side surface of the clamping block 602. A lower pressing roller 605 is provided in contact with the inner wall of the outer arc-shaped plate 501 on the side of the support plate 401. The output shaft of the first motor 601 rotates to drive the clamping block 602 to rotate. The rotation of the clamping block 602 drives the upper pressing roller 603 with the clamping slot 604 to rotate. The upper pressing roller 603 rotates to crush the bagged fertilizer raw materials and drives them to move left. The bagged fertilizer raw materials move left, driving the lower pressing roller 605 to crush the raw materials while rotating.

[0043] All electrical equipment in this solution are powered by external power supplies.

[0044] Working principle: When in use, place the upper pressing roller 603 and the lower pressing roller 605 on the inner wall surface of the outer arc plate 501, move the limit rod 505 upward to drive the spring 506 to extend, control the inner arc plate 503 in the arc groove 502 to slide toward the limit hole 504 to the bottom and fit the top right side of the outer arc plate 501, release the controlled limit rod 505 to make it pass through the limit hole 504 under the elastic force of the spring 506, fix the upper pressing roller 603 and the lower pressing roller 605 in place, and the bagged fertilizer raw materials move toward the crushing mechanism 6 along the right inclined plate 2 with the baffle 3 fixed on the side under the influence of gravity, and the output shaft of the first motor 601 rotates to drive the block 602 to rotate, and the block 602 The rotation drives the upper pressure roller 603 with a slot 604 to rotate, and the upper pressure roller 603 rotates to crush the bagged fertilizer raw materials and drives them to move to the left. The bagged fertilizer raw materials move to the left and drive the lower pressure roller 605 to crush the raw materials while rotating. The output shaft of the second motor 703 on the side of the support column 702 at the top of the left inclined plate 701 rotates to drive the bidirectional screw 704 to rotate. The rotation of the bidirectional screw 704 drives the thread ring 705 that is slidably connected to the sliding groove 708 provided on the top slide 706 and the top cover 707 to move. The movement of the thread ring 705 drives the splint 710 at the bottom of the connecting rod 709 to move toward each other to squeeze the flat raw materials and make them loose.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A biofertilizer raw material pretreatment device, comprising a base plate (1), an adjusting mechanism (4) for adjusting the distance to adapt to fertilizer raw materials of different thicknesses, and a fertilizer raw material replacement mechanism (5) for facilitating replacement of different rollers to adapt to different crushing requirements, characterized in that: A loosening mechanism (7) for clamping the crushed bagged fertilizer raw material to keep it in a loose state is fixedly connected to the left side of the top of the bottom plate (1). The loosening mechanism (7) includes a connecting rod (709) and a clamping plate (710). The connecting rod (709) is arranged on both sides above the bottom plate (1). The top of the clamping plate (710) is fixedly connected to the bottom of the connecting rod (709). The bottom of the adjusting mechanism (4) is fixedly connected to the middle of the top of the bottom plate (1). The side of the replacing mechanism (5) is fixedly connected to the side of the adjusting mechanism (4).

2. The biofertilizer raw material pretreatment equipment according to claim 1, characterized in that: The loosening mechanism (7) further comprises a left inclined plate (701) and a support column (702), wherein the bottom of the left inclined plate (701) is fixedly connected to the left side of the top of the base plate (1), the bottom of the support column (702) is fixedly connected to the top of the left inclined plate (701), the front side of the support column (702) is fixedly connected to a second motor (703), and the output shaft of the second motor (703) is fixedly connected to a bidirectional screw (704).

3. The biofertilizer raw material pretreatment equipment according to claim 2, characterized in that: The loosening mechanism (7) further comprises a threaded ring (705) and a top cover (707), wherein the threaded ring (705) is threadedly connected to the surface of the bidirectional screw (704), the top of the threaded ring (705) is fixedly connected to a slide rod (706), the bottom of the threaded ring (705) is fixedly connected to the top of the connecting rod (709), the side of the top cover (707) is fixedly connected to the top of the support column (702), and a slide groove (708) is provided at the bottom of the top cover (707), and the slide groove (708) is slidably connected to the slide rod (706).

4. The biofertilizer raw material pretreatment equipment according to claim 1, characterized in that: A right inclined plate (2) is fixedly connected to the right side of the top of the bottom plate (1) to facilitate the bagged fertilizer raw materials to slide to the left under the influence of their own gravity, and baffles (3) are fixedly connected to the front and rear sides of the top of the right inclined plate (2) to prevent the bagged fertilizer raw materials from sliding to the left from moving out of the right inclined plate (2).

5. The biofertilizer raw material pretreatment equipment according to claim 1, characterized in that: The adjustment mechanism (4) comprises a support plate (401) and a fixed plate (402); the bottom of the support plate (401) is fixedly connected to the middle of the top of the bottom plate (1); the bottom of the fixed plate (402) is fixedly connected to the top of the support plate (401); the top of the fixed plate (402) is fixedly connected to an electric telescopic rod (403); the top of the electric telescopic rod (403) is fixedly connected to a top plate (404); the top of the top plate (404) is fixedly connected to an upper plate (405); and the number of the adjustment mechanisms (4) is two and they are symmetrically arranged.

6. The biofertilizer raw material pretreatment equipment according to claim 1, characterized in that: The replacement mechanism (5) comprises an outer arc plate (501) and an arc groove (502), wherein the outer arc plate (501) is fixedly connected to the support plate (401) and the upper plate (405), the arc groove (502) is provided on the side of the outer arc plate (501), the arc groove (502) is slidably connected to the inner arc plate (503), a limiting hole (504) is provided on one side of the inner arc plate (503) and the outer arc plate (501), a limiting rod (505) is slidably connected in the limiting hole (504), a spring (506) is fixedly connected to the top of the limiting rod (505), and the bottom of the spring (506) is fixedly connected to the top of the left side of the inner arc plate (503), and the number of the replacement mechanism (5) is four and they are symmetrically arranged.

7. The biofertilizer raw material pretreatment equipment according to claim 6, characterized in that: The front side of the upper plate (405) is fixedly connected to a crushing mechanism (6) for crushing the bagged fertilizer raw materials. The crushing mechanism (6) comprises a first motor (601) and an upper pressing roller (603). The first motor (601) is fixedly connected to the front side of the upper plate (405). The output shaft of the first motor (601) is fixedly connected to a clamping block (602). The side surfaces of both ends of the upper pressing roller (603) are in contact with the inner wall of the outer arc-shaped plate (501). A clamping groove (604) is provided at the front end of the upper pressing roller (603). The clamping groove (604) is in contact with the side surface of the clamping block (602).

8. The biofertilizer raw material pretreatment equipment according to claim 7, characterized in that: The crushing mechanism (6) further comprises a lower pressing roller (605), and the side surfaces at both ends of the lower pressing roller (605) are in contact with the inner wall of the outer arc-shaped plate (501) on the side of the support plate (401).

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