A process for preparing bio-organic fertilizer

Abstract

This invention relates to the field of fertilizer preparation technology, specifically a process for preparing bio-organic fertilizer, comprising the following steps: Step 1, selecting raw materials, specifically forage and livestock manure; Step 2, pulverizing the raw materials; Step 3, adding aerobic bacteria and a deodorizing agent to the pulverized raw materials; Step 4, introducing the raw materials into an oxygen supply device, and introducing dry oxygen into the device to obtain fertilizer. This process utilizes the aforementioned oxygen supply device. The threaded drive mechanism operates in both forward and reverse directions, driving the rotating shaft to rotate the horizontal plate. The horizontal plate then drives multiple columns to perform circular motion above the disc, which in turn rotates the raw materials in the disc, improving the contact between oxygen and the raw materials. This cycle repeats, significantly improving the efficiency of fertilizer formation and making it suitable for widespread use.

Description

Technical Field

[0001] This invention relates to the field of fertilizer preparation technology, specifically a process for preparing bio-organic fertilizer. Background Technology

[0002] Bio-organic fertilizer refers to a type of fertilizer that combines the effects of microbial fertilizer and organic fertilizer by combining specific functional microorganisms with organic materials mainly derived from animal and plant residues (such as livestock and poultry manure, crop straw, etc.) that have undergone harmless treatment and composting.

[0003] Chinese patent (CN113735643A) proposes a process for preparing bio-organic fertilizer, which includes the following steps: Step 1: Mixing and grinding grass and livestock manure into fine pieces to form preliminary processed material; Step 2: Spreading the preliminary processed material flat; Step 3: Gradually adding aerobic bacteria and deodorizing agent during the spreading process; Step 4: After spreading, introducing dry oxygen and vibrating the material while introducing oxygen to form fertilizer.

[0004] The aforementioned patent involves vibrating the raw materials during oxygenation. This treatment method tends to cover the middle layer of the raw materials, making it difficult for the middle layer to come into rapid contact with oxygen. This limits the fertilizer formation efficiency and makes it difficult to achieve the desired treatment effect. Summary of the Invention

[0005] The purpose of this invention is to provide a process for preparing bio-organic fertilizer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A process for preparing bio-organic fertilizer includes the following steps:

[0008] Step 1: Select raw materials, including hay and livestock manure.

[0009] Step two: Crush the raw materials.

[0010] Step 3: Add aerobic bacteria and deodorizer to the pulverized raw materials;

[0011] Step four: introduce the raw materials into the oxygen supply device and introduce dry oxygen into the device to obtain fertilizer.

[0012] As a further aspect of the present invention: the oxygen supply device includes a box and a tray fixed in the box, the tray being used to hold raw materials;

[0013] The oxygen supply device also includes:

[0014] A rotating shaft is rotatably installed inside the housing and rotatably connected to the disc body. The rotating shaft is also connected to a threaded drive mechanism installed inside the housing. The threaded drive mechanism can drive the rotating shaft to rotate, causing the horizontal plate fixedly installed on the rotating shaft to rotate.

[0015] Multiple columns are provided on the horizontal plate. When the threaded drive mechanism drives the rotating shaft to rotate, the multiple columns perform circumferential motion to perform a turning action on the raw material in the disc. The multiple columns are connected to a shifting mechanism provided on the horizontal plate.

[0016] A one-way triggering mechanism is installed inside the housing and connected to the shifting mechanism and the threaded drive mechanism. The one-way triggering mechanism can drive the shifting mechanism to move multiple columns radially along the disc body, so as to change the position of the columns relative to the raw material.

[0017] As a further embodiment of the present invention: the switching mechanism includes two sleeves slidably sleeved on the horizontal plate and a sleeve sleeved on the rotating shaft, the sleeve being connected to the two sleeves respectively by two connecting rods;

[0018] One end of the connecting rod is hinged to the sleeve, and the other end is hinged to the sleeve plate. The column is fixedly installed at the bottom of the sleeve plate, and the sleeve is connected to the one-way triggering mechanism.

[0019] As a further embodiment of the present invention: the threaded drive mechanism includes a lead screw rotatably mounted in the housing, a drive motor mounted on the inner wall of the housing, and a threaded sleeve sleeved on the lead screw and threadedly connected to the lead screw. One end of the lead screw is connected to the output end of the drive motor, and the other end is connected to the rotating shaft through a first bevel gear set. The threaded sleeve is connected to the one-way triggering mechanism.

[0020] As a further embodiment of the present invention: a vertical plate is fixedly installed inside the box, and a lifting plate is slidably provided in the vertical plate. The lifting plate is arranged in an "L" shape and is rotatably connected to the sleeve. The one-way triggering mechanism includes a sliding engagement component installed on the vertical plate and an intermittent triggering structure connected to the sliding engagement component. The lifting plate is also connected to two sets of positioning structures.

[0021] As a further embodiment of the present invention: the intermittent triggering structure includes a guide plate fixed to the side of the vertical plate, a slider slidably disposed on the guide plate and fixedly connected to the threaded sleeve, a transmission plate fixedly mounted on the slider, and a ratchet rotatably mounted on the vertical plate.

[0022] The ratchet's rotation shaft is connected to a transmission shaft rotatably mounted on the vertical plate via a second bevel gear set. The transmission shaft is connected to the sliding engagement assembly. The transmission plate is provided with multiple inclined slots at equal intervals along its length, and each inclined slot is hinged with a pawl that engages with the ratchet. The pawl is also connected to a torsion spring located in the inclined slot.

[0023] As a further embodiment of the present invention: the sliding fit assembly includes a disc rotatably mounted on the side of the vertical plate and a drive column fixedly disposed at the eccentric position of the disc, and the rotation shaft of the disc is connected to the drive shaft via a transmission belt;

[0024] The lifting plate is also fixedly provided with two limiting rods on its side, and a gap is reserved between the two limiting rods. The driving column extends into the gap and is slidably connected to the two limiting rods.

[0025] As a further embodiment of the present invention: the positioning structure includes two horizontal bars fixedly connected to the lifting plate via a connecting arm, a sliding plate slidably connected to the two horizontal bars, and two cylindrical springs respectively sleeved on the outer periphery of the two horizontal bars, wherein one end of the cylindrical spring is connected to the sliding plate and the other end is connected to the connecting arm;

[0026] The box body is also fixed with a vertical plate, which abuts against a pulley on the sliding plate. The vertical plate is provided with two limiting grooves, which are adapted to the pulley.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention has a novel design. The process adopts the aforementioned oxygen supply device. When the threaded drive mechanism works in both forward and reverse directions, it drives the rotating shaft to rotate the horizontal plate. As a result, the horizontal plate drives multiple columns to move in a circular motion above the disc. The multiple columns then move the raw material in the disc in a circular motion, improving the sufficiency of oxygen contact with the raw material and increasing the efficiency of fertilizer formation. Each time the threaded drive mechanism completes one forward and reverse operation, the one-way triggering mechanism is triggered. The one-way triggering mechanism then drives the shifting mechanism to move, causing the shifting mechanism to drive the multiple columns to move radially along the disc, thereby changing the position of the columns moving the raw material and further improving the sufficiency of oxygen contact with the raw material. This cycle repeats, which can significantly improve the efficiency of fertilizer formation and is suitable for widespread use. Attached Figure Description

[0028] Figure 1 This is a schematic flowchart of one embodiment of the bio-organic fertilizer preparation process.

[0029] Figure 2This is a schematic diagram of one embodiment of the bio-organic fertilizer preparation process.

[0030] Figure 3 This is a schematic diagram of the internal structure of the box in one embodiment of the bio-organic fertilizer preparation process.

[0031] Figure 4 This is a schematic diagram of the internal structure of the box from another angle in one embodiment of the bio-organic fertilizer preparation process.

[0032] Figure 5 for Figure 3 Enlarged view of the structure at point A in the middle.

[0033] Figure 6 for Figure 4 Enlarged view of the structure at point B.

[0034] Figure 7 This is a schematic diagram of the transposition mechanism in one embodiment of the bio-organic fertilizer preparation process.

[0035] Figure 8 This is a schematic diagram of the unidirectional triggering mechanism in one embodiment of the bio-organic fertilizer preparation process.

[0036] Figure 9 This is a schematic diagram of the positioning structure in one embodiment of the bio-organic fertilizer preparation process.

[0037] In the diagram: 1. Housing; 2. Disc; 3. Rotating shaft; 4. Drive motor; 5. Lead screw; 6. First bevel gear set; 7. Horizontal plate; 8. Sleeve plate; 9. Connecting rod; 10. Sleeve; 11. Lifting plate; 12. Vertical plate; 13. Column; 14. Threaded sleeve; 15. Slider; 16. Guide plate; 17. Transmission plate; 18. Ratchet; 19. Transmission shaft; 20. Second bevel gear set; 21. Transmission belt; 22. Disc; 23. Drive column; 24. Limiting rod; 25. Connecting arm; 26. Horizontal bar; 27. Sliding plate; 28. Columnar spring; 29. ​​Pulley; 30. Vertical plate; 3001. Limiting groove. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0040] Please see Figure 1 In this embodiment of the invention, a bio-organic fertilizer preparation process includes the following steps:

[0041] Step 1: Select raw materials, including hay and livestock manure.

[0042] Step two: Crush the raw materials.

[0043] Step 3: Add aerobic bacteria and deodorizer to the pulverized raw materials;

[0044] Step four: introduce the raw materials into the oxygen supply device and introduce dry oxygen into the device to obtain fertilizer.

[0045] Please refer to it again. Figures 2-9 The oxygen supply device includes a box 1 and a tray 2 fixed in the box 1, the tray 2 being used to hold raw materials;

[0046] The oxygen supply device also includes:

[0047] A rotating shaft 3 is rotatably installed inside the housing 1 and rotatably connected to the disc 2. The rotating shaft 3 is also connected to a threaded drive mechanism installed inside the housing 1. The threaded drive mechanism can drive the rotating shaft 3 to rotate, causing the horizontal plate 7 fixedly installed on the rotating shaft 3 to rotate.

[0048] Multiple columns 13 are provided on the horizontal plate 7. When the threaded drive mechanism drives the rotating shaft 3 to rotate, the multiple columns 13 perform circumferential motion to perform a turning action on the raw material in the disc 2. The multiple columns 13 are connected to the shifting mechanism provided on the horizontal plate 7.

[0049] A one-way triggering mechanism is installed inside the housing 1 and connected to the shifting mechanism and the threaded drive mechanism. The one-way triggering mechanism can drive the shifting mechanism to move multiple columns 13 radially along the disc 2, so as to change the position of the columns 13 on the raw material.

[0050] It should also be noted that the box 1 is provided with a corresponding channel for introducing dry oxygen into the box 1 to facilitate fertilizer formation.

[0051] Specifically, when the threaded drive mechanism operates in both forward and reverse directions, it drives the rotating shaft 3 to rotate the horizontal plate 7. The horizontal plate 7 then causes multiple columns 13 to move in a circular motion above the disc 2. These columns 13 then rotate the raw material in the disc 2, improving the contact between oxygen and the raw material and increasing fertilizer formation efficiency. Each time the threaded drive mechanism completes one forward and reverse operation, the one-way triggering mechanism is triggered, causing the shifting mechanism to move. This causes the shifting mechanism to drive the multiple columns 13 to move radially along the disc 2, thereby changing the position of the columns 13 relative to the raw material and further improving the contact between oxygen and the raw material. This cycle repeats continuously, significantly improving fertilizer formation efficiency and making it suitable for widespread use.

[0052] Please refer to it again. Figure 7 The switching mechanism includes two sleeve plates 8 slidably sleeved on the horizontal plate 7 and a sleeve 10 sleeved on the rotating shaft 3. The sleeve 10 is connected to the two sleeve plates 8 respectively by two connecting rods 9. One end of the connecting rod 9 is hinged to the sleeve 10 and the other end is hinged to the sleeve plate 8. The column 13 is fixedly installed at the bottom of the sleeve plate 8, and the sleeve 10 is connected to the one-way triggering mechanism.

[0053] The threaded drive mechanism includes a lead screw 5 rotatably mounted in the housing 1, a drive motor 4 mounted on the inner wall of the housing 1, and a threaded sleeve 14 sleeved on the lead screw 5 and threadedly connected to the lead screw 5. One end of the lead screw 5 is connected to the output end of the drive motor 4, and the other end is connected to the rotating shaft 3 through a first bevel gear set 6. The threaded sleeve 14 is connected to the one-way triggering mechanism.

[0054] In detail, the first bevel gear set 6 includes a first bevel gear fixedly installed on the end of the lead screw 5 away from the drive motor 4 and a second bevel gear fixedly installed on the rotating shaft 3, and the second bevel gear meshes with the first bevel gear;

[0055] Secondly, the drive motor 4 should be a servo motor with bidirectional drive capability at the output end. This application does not specify the specific model, and it can be selected according to actual needs.

[0056] When the drive motor 4 drives the lead screw 5 to rotate, the lead screw 5, together with the first bevel gear set 6, drives the rotating shaft 3 to rotate. Then, the rotating shaft 3 drives the horizontal plate 7 to rotate, causing the horizontal plate 7 to drive multiple columns 13 to perform circular motion on the disc 2. The columns 13 then rotate the raw material in the disc 2, improving the sufficiency of oxygen contact with the raw material.

[0057] Please refer to it again. Figure 5 , Figure 7 as well as Figure 8 A vertical plate 12 is fixedly installed inside the housing 1. A lifting plate 11 is slidably provided in the vertical plate 12. The lifting plate 11 is L-shaped and rotatably connected to the sleeve 10. The one-way triggering mechanism includes a sliding engagement component installed on the vertical plate 12 and an intermittent triggering structure connected to the sliding engagement component. The lifting plate 11 is also connected to two sets of positioning structures.

[0058] Whenever the drive motor 4 drives the lead screw 5 to complete one forward and reverse rotation, that is, during the process of the threaded sleeve 14 and the lead screw 5 completing one reciprocating movement through threaded engagement, the intermittent triggering structure is triggered once, and drives the sliding engagement assembly to move. Thus, the sliding engagement assembly will drive the lifting plate 11 to rise or fall in the vertical plate 12, and correspondingly, the sleeve 10 will rise or fall on the rotating shaft 3.

[0059] When the sleeve 10 descends on the rotating shaft 3, the sleeve 10 will drive the sleeve plate 8 to slide away from the rotating shaft 3 on the horizontal plate 7 via the connecting rod 9. Conversely, when the sleeve 10 rises on the rotating shaft 3, it will drive the sleeve plate 8 to slide towards the rotating shaft 3 on the horizontal plate 7 via the connecting rod 9. Therefore, the position of the column 13 in the radial direction of the disc 2 is changed, which can effectively improve the sufficiency of the column 13 in moving the raw materials.

[0060] The intermittent triggering structure includes a guide plate 16 fixed to the side of the vertical plate 12, a slider 15 slidably disposed on the guide plate 16 and fixedly connected to the threaded sleeve 14, a transmission plate 17 fixedly mounted on the slider 15, and a ratchet 18 rotatably mounted on the vertical plate 12.

[0061] The ratchet 18 is connected to the transmission shaft 19, which is rotatably mounted on the vertical plate 12, via the second bevel gear set 20. The transmission shaft 19 is connected to the sliding engagement assembly. The transmission plate 17 is provided with a plurality of inclined grooves at equal intervals along its length, and each inclined groove is hinged with a pawl that engages with the ratchet 18. The pawl is also connected to a torsion spring located in the inclined groove.

[0062] Furthermore, the second bevel gear set 20 includes a third bevel gear fixedly mounted coaxially with the ratchet 18 and a fourth bevel gear fixedly mounted on the transmission shaft 19 at one end facing the ratchet 18, and the fourth bevel gear meshes with the third bevel gear;

[0063] When the drive motor 4 drives the lead screw 5 to rotate in both directions, the guide plate 16 and the slider 15 act as guides, causing the threaded sleeve 14 to engage with the lead screw 5. During the initial stroke of the threaded sleeve 14 in moving the slider 15 away from the vertical plate 12, the pawl on the transmission plate 17 passes the ratchet 18. At this time, the pawl rotates in the inclined groove, causing the torsion spring in the inclined groove to deform, and the ratchet 18 does not rotate. However, during the later stroke of the threaded sleeve 14 in moving the slider 15 towards the vertical plate 12, the pawl on the transmission plate 17 cannot rotate when passing the ratchet 18, thus causing the ratchet 18 to rotate. Correspondingly, the rotation shaft of the ratchet 18 drives the transmission shaft 19 to rotate through the second bevel gear set 20, and then the transmission shaft 19 drives the sliding engagement assembly to move, causing the sleeve 10 to slide on the rotating shaft 3.

[0064] The sliding fit assembly includes a disc 22 rotatably mounted on the side of the vertical plate 12 and a drive column 23 fixedly disposed at the eccentric position of the disc 22. The rotation axis of the disc 22 is connected to the drive shaft 19 via a transmission belt 21.

[0065] The lifting plate 11 is also fixedly provided with two limiting rods 24 on its side, and a gap is reserved between the two limiting rods 24. The driving column 23 extends into the gap and is slidably connected to the two limiting rods 24.

[0066] Whenever the ratchet 18 rotates, its rotating shaft drives the disc 22 to rotate half a revolution through the second bevel gear set 20, the transmission shaft 19, and the transmission belt 21. Correspondingly, the disc 22 drives the drive column 23 to perform a circular motion, and the drive column 23 slides with the two limit rods 24 during the movement, thereby causing the lifting plate 11 to rise or fall in the vertical plate 12. The lifting plate 11 then drives the sleeve 10 to rise or fall on the rotating shaft 3.

[0067] Please refer to it again. Figure 6 and Figure 9 The positioning structure includes two crossbars 26 fixedly connected to the lifting plate 11 via a connecting arm 25, a sliding plate 27 slidably connected to the two crossbars 26, and two cylindrical springs 28 respectively sleeved on the outer periphery of the two crossbars 26, wherein one end of the cylindrical spring 28 is connected to the sliding plate 27 and the other end is connected to the connecting arm 25.

[0068] The box 1 is also fixed with a vertical plate 30, which abuts against the pulley 29 on the sliding plate 27. The vertical plate 30 is provided with two limiting grooves 3001, which are adapted to the pulley 29.

[0069] Whenever the disc 22 rotates, causing the lifting plate 11 to rise or fall within the vertical plate 12, the connecting arm 25 moves along with the lifting plate 11. Consequently, the pulley 29 rolls along the vertical plate 30. After the disc 22 finishes rotating, the pulley 29 enters the corresponding limiting groove 3001. This stabilizes the current state of the lifting plate 11, preventing the column 13 from failing to maintain its proper position due to instability of the lifting plate 11 after the pawl disengages from the ratchet 18.

[0070] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0071] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A process for preparing bio-organic fertilizer, characterized in that, Includes the following steps: Step 1: Select raw materials, including hay and livestock manure. Step two: Crush the raw materials. Step 3: Add aerobic bacteria and deodorizer to the pulverized raw materials; Step 4: The raw materials are introduced into the oxygen supply device, and dry oxygen is introduced into the device to obtain fertilizer. The oxygen supply device includes a box (1) and a tray (2) fixed in the box (1), the tray (2) being used to hold raw materials; The oxygen supply device also includes: A rotating shaft (3) is rotatably installed inside the housing (1) and rotatably connected to the disc (2). The rotating shaft (3) is also connected to a threaded drive mechanism installed inside the housing (1). The threaded drive mechanism can drive the rotating shaft (3) to rotate, causing the horizontal plate (7) fixedly installed on the rotating shaft (3) to rotate. Multiple columns (13) are provided on the horizontal plate (7). When the threaded drive mechanism drives the rotating shaft (3) to rotate, the multiple columns (13) make circular motion to perform a turning action on the raw material in the disc (2). The multiple columns (13) are connected to the shifting mechanism provided on the horizontal plate (7). A one-way triggering mechanism is installed inside the housing (1) and connected to the shifting mechanism and the threaded drive mechanism. The one-way triggering mechanism can drive the shifting mechanism to move multiple columns (13) radially along the disc (2) so that the position of the columns (13) relative to the raw material changes. The switching mechanism includes two sleeves (8) slidably sleeved on the horizontal plate (7) and a sleeve (10) sleeved on the rotating shaft (3). The sleeve (10) is connected to the two sleeves (8) respectively through two connecting rods (9). Wherein, one end of the connecting rod (9) is hinged to the sleeve (10), and the other end is hinged to the sleeve plate (8). The column (13) is fixedly installed at the bottom of the sleeve plate (8), and the sleeve (10) is connected to the one-way triggering mechanism. The threaded drive mechanism includes a lead screw (5) rotatably mounted in the housing (1), a drive motor (4) mounted on the inner wall of the housing (1), and a threaded sleeve (14) sleeved on the lead screw (5) and threadedly connected to the lead screw (5). One end of the lead screw (5) is connected to the output end of the drive motor (4), and the other end is connected to the rotating shaft (3) through a first bevel gear set (6). The threaded sleeve (14) is connected to the one-way triggering mechanism. A vertical plate (12) is fixedly installed inside the box (1). A lifting plate (11) is slidably provided in the vertical plate (12). The lifting plate (11) is arranged in an "L" shape and is rotatably connected to the sleeve (10). The one-way triggering mechanism includes a sliding engagement component installed on the vertical plate (12) and an intermittent triggering structure connected to the sliding engagement component. The lifting plate (11) is also connected to two sets of positioning structures. The intermittent triggering structure includes a guide plate (16) fixed to the side of the vertical plate (12), a slider (15) slidably disposed on the guide plate (16) and fixedly connected to the threaded sleeve (14), a transmission plate (17) fixedly installed on the slider (15), and a ratchet (18) rotatably installed on the vertical plate (12). The rotating shaft of the ratchet (18) is connected to the transmission shaft (19) rotatably mounted on the vertical plate (12) through the second bevel gear set (20). The transmission shaft (19) is connected to the sliding fit assembly. The transmission plate (17) is provided with a plurality of inclined grooves at equal intervals along the length direction. Each inclined groove is hinged with a pawl that engages with the ratchet (18). The pawl is also connected to a torsion spring provided in the inclined groove.

2. The bio-organic fertilizer preparation process according to claim 1, characterized in that, The positioning structure includes two crossbars (26) fixedly connected to the lifting plate (11) via a connecting arm (25), a sliding plate (27) slidably connected to the two crossbars (26), and two cylindrical springs (28) respectively sleeved on the outer periphery of the two crossbars (26).

3. The bio-organic fertilizer preparation process according to claim 2, characterized in that, One end of the cylindrical spring (28) is connected to the sliding plate (27), and the other end is connected to the connecting arm (25).

4. The bio-organic fertilizer preparation process according to claim 3, characterized in that, The sliding fit assembly includes a disc (22) rotatably mounted on the side of the vertical plate (12) and a drive column (23) fixedly disposed at the eccentric position of the disc (22).

5. The bio-organic fertilizer preparation process according to claim 4, characterized in that, The rotating shaft of the disc (22) is connected to the transmission shaft (19) via the transmission belt (21); wherein, the side of the lifting plate (11) is also fixedly provided with two limiting rods (24), and a gap is reserved between the two limiting rods (24), and the driving column (23) extends into the gap and slides in connection with the two limiting rods (24).

6. The bio-organic fertilizer preparation process according to claim 3, characterized in that, The box (1) is also fixed with a vertical plate (30), which abuts against the pulley (29) on the sliding plate (27). The vertical plate (30) is provided with two limiting grooves (3001), which are adapted to the pulley (29).

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