A mixing device for processing biological organic fertilizer

Abstract

The present invention relates to the technical field of material mixing equipment, and in particular to a mixing device for processing biological organic fertilizer; it includes a shell, a transmission device and a motor device, two stirring shafts are arranged in the shell, spiral blades are fixed on the stirring shafts, the shell is composed of a frame body and a tank body which are connected from top to bottom, the inner wall of the tank body is a curved surface, and the frame body has four inner side walls distributed in a rectangular shape; a floating frame is defined above the shell, and four scrapers are fixed on the floating frame through a knife arm, and the floating frame is driven by the stirring shaft to drive the scrapers to move back and forth up and down to scrape off the materials adhered to the inner wall of the frame. The mixing device optimizes the structure of the shell and its matching mode with the stirring shaft and spiral blades, and specifically sets components such as scrapers, so that the mixing efficiency and working performance can be significantly improved, and the problem of material residue can be effectively solved; the scraper can achieve a good scraping effect by running at a lower reciprocating frequency, which can avoid unnecessary mechanical wear and reduce the energy consumption of equipment operation.

Description

Technical Field

[0001] The invention relates to the technical field of material mixing equipment, in particular to a mixing device for processing biological organic fertilizer. Background Art

[0002] As a core component in the production process of bio-organic fertilizer, mixing equipment runs through various links such as primary mixing of raw materials, deepening of fermentation, preparation for granulation and pre-packaging treatment. Among them, the biaxial stirring and mixing equipment has become the preferred equipment widely used in this field due to its efficient mixing ability, wide material adaptability, stable operating performance and continuous production capacity. However, in the face of the high moisture and high organic matter characteristics commonly found in bio-organic fertilizer raw materials, these components give the materials strong viscosity, which brings challenges to the mixing process. Specifically, under the strong stirring action of the biaxial stirring and mixing equipment, although the materials can be effectively mixed, a considerable part of the materials are also thrown up strongly and adhere to the inner wall of the shell due to the viscosity, especially in the inner wall area with a higher position and poor stirring force. Over time, these adhered materials gradually accumulate and solidify due to drying, forming residual materials that are difficult to peel off. This phenomenon not only forces the production process to be frequently interrupted for manual cleaning, but also greatly weakens the continuous operation capacity and overall efficiency of the production line. What is more important to note is that long-term accumulated residual materials may become a breeding ground for bacteria, posing a potential threat to product quality and increasing biosafety risks. At the same time, they may also cause corrosion or blockage to the equipment itself due to untimely or incomplete cleaning, further affecting the long-term stable operation of the equipment and processing results. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a mixing device for processing bio-organic fertilizer, which has high mixing efficiency, less material residue, lower energy consumption and good durability.

[0004] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0005] A mixing device for processing biological organic fertilizer, comprising a shell, a transmission device and a motor device supported and fixed by a frame, a discharge port is opened on the shell, two stirring shafts extending horizontally in the front and rear directions are arranged in the shell, the stirring shafts are rotatably matched with the front and rear ends of the shell, spiral blades are fixed on the stirring shafts, and the two stirring shafts are connected to the motor device through the transmission device; the characteristics are:

[0006] The shell is composed of a frame body and a tank body that are distributed and communicated with each other up and down; two stirring shafts and spiral blades are located in the tank body, and the inner wall of the tank body is a curved surface structure to match the stirring trajectory of the spiral blades; the frame body is located above the tank body, and has four inner side walls that are located in a vertical plane and distributed in a rectangular shape; a floating frame that can move vertically is defined above the shell, and an end pin is fixed at each of the front and rear ends of the floating frame. The floating frame is fixed with four scrapers through a number of knife arms, and the lower end of the scraper is a blade; when the floating frame moves up and down, the blades of the four scrapers are respectively attached to the four edges of the frame body. The inner wall moves up and down to scrape off the material adhered to the inner wall; a driven wheel and a driving wheel are rotatably fixed at the front and rear ends of the shell, and the driving wheel is connected to the corresponding driven wheel through a one-way driving mechanism; the two driving wheels are each connected to the same stirring shaft through a reduction mechanism; an eccentric pin is fixed on one side of the driven wheel, and the eccentric pin is connected to the corresponding end pin through a connecting rod; when the stirring shaft rotates to make the mixing device work, the driving wheel drives the driven wheel to rotate through the one-way driving mechanism, and the two driven wheels drive the floating frame to move back and forth up and down through the connecting rod.

[0007] In a preferred embodiment, a plurality of vertical guide holes are opened around the upper end of the shell, and a plurality of guide rods extending downward and corresponding to the guide holes are fixed on the floating frame. The guide rods are inserted into the corresponding guide holes and the two are slidably matched.

[0008] In a preferred embodiment, a plurality of hinge seats are fixed on the floating frame, and the upper end of the knife arm is rotatably connected to the hinge seat, so that the blade at the lower end of the scraper can move away from and approach the inner wall of the frame, and a spring sheet that applies elastic force to the knife arm is fixed on the hinge seat, so that the blade of the scraper keeps in contact with the inner wall of the frame;

[0009] Furthermore, a protrusion is provided on the inner side wall of the frame body, and when the scraper moves up to the highest position, the blade arm or the scraper abuts against the protrusion, so that the scraper is separated from the inner side wall of the frame body.

[0010] In a preferred embodiment, the deceleration mechanism includes an axle wheel, a first reduction wheel and a second reduction wheel, the axle wheel is fixed on the stirring shaft, the first reduction wheel and the second reduction wheel are coaxially fixedly connected and rotatably fixed on the shell, the axle wheel is transmission-connected to the first reduction wheel, the second reduction wheel is transmission-connected to the driving wheel, and the wheel diameters of the axle wheel and the second reduction wheel are smaller than the wheel diameter of the first reduction wheel.

[0011] In a preferred embodiment, the one-way drive mechanism includes ratchet teeth evenly distributed on the outer contour of the driven wheel, at least one first pawl rotatably fixed on the driving wheel and cooperating with the ratchet teeth, an elastic member driving the first pawl to reset is fixed on the driving wheel, and the ratchet teeth and the first pawl constitute a ratchet mechanism.

[0012] In a preferred embodiment, the speed reduction mechanism includes a cam, a push rod and a rack, the cam is fixed on a stirring shaft, the rack is slidably fixed to the outside of the shell and can slide within a range along the length direction, the driving wheel is a gear and meshes with the rack; one end of the rack is fixedly connected to the push rod and the push rod can be telescopically adjusted, the push rod is pushed by the profile of the cam, a thrust spring for driving the push rod to move in the direction of the cam is fixed outside the shell, and a non-return mechanism is installed between the shell and the driven wheel; when the cam pushes the push rod to move, the driving wheel can drive the driven wheel to rotate through the one-way driving mechanism, and at this time, the rotation direction of the driven wheel is not blocked by the non-return mechanism;

[0013] Furthermore, the anti-return mechanism is a ratchet mechanism, which is composed of a ratchet, a second pawl and an elastic member, the ratchet is fixedly connected to the driven wheel and the axes coincide with each other, the second pawl is rotatably fixed on the housing, and the elastic member drives the second pawl to reset;

[0014] Furthermore, a socket is provided at one end of the rack, the push rod is plugged into the socket, and a locking bolt for locking the push rod is installed on the rack;

[0015] Furthermore, a roller is rotatably fixed to one end of the push rod close to the cam, and the roller is used to contact and cooperate with the contour of the cam.

[0016] Compared with the prior art, the mixing device for processing bio-organic fertilizer in the present invention has the following beneficial technical effects:

[0017] The present mixing device inherits the technical advantages of the traditional double-shaft stirring and mixing equipment, and has the technical advantages of high mixing efficiency, wide applicability, and sustainable production; the structure of the shell is optimized, and it is reasonably divided into two parts, a frame and a tank body, with different shape characteristics. The tank body can be better matched with the stirring shaft and the spiral blade. The scraper and other components are set based on the characteristics of the frame, which effectively solves the problem of material residue and significantly improves the mixing efficiency and working performance. In the driving structure of the scraper, a one-way driving mechanism and a speed reduction mechanism are reasonably set, and while reducing the reciprocating frequency of the floating frame, it is ensured that the scraper has a good scraping effect on the adhered material during operation, thereby avoiding unnecessary mechanical wear, extending the working life of the present mixing device, and reducing the overall operating energy consumption of the equipment; the operation of the floating frame and the scraper is powered by the stirring shaft, and no additional power source is required, which realizes the compactness of the structure and the optimization of the cost. In summary, the biological organic fertilizer processing mixing device of the present invention not only realizes efficient mixing and low residue through a series of innovative designs, but also takes into account energy consumption control, durability improvement and equipment cost optimization. The equipment has a compact structure and is easy to implement, showing excellent comprehensive technical performance and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] Figure 1 This is a schematic diagram of the structure of a mixing device for processing bio-organic fertilizer.

[0020] Figure 2 It is a schematic diagram of the structure of a mixing device for processing bio-organic fertilizer in another direction.

[0021] Figure 3 This is a schematic diagram of the internal structure of a mixing device for processing bio-organic fertilizer.

[0022] Figure 4 It is a schematic diagram of the structure of the floating frame and the scraper.

[0023] Figure 5 This is a schematic diagram of the working status of a mixing device for processing bio-organic fertilizer.

[0024] Figure 6 It is a schematic diagram of a specific implementation structure of a one-way drive mechanism and a speed reduction mechanism.

[0025] Figure 7 Based on Figure 6 A schematic diagram showing the principle of the driven wheel of the one-way drive mechanism overtaking the driving wheel.

[0026] Figure 8 Schematic diagram of the coordination of the floating frame, knife arm and scraper.

[0027] Fig. 9 It is a schematic diagram of the cooperation state between the scraper and the raised part when the scraper moves to the highest position.

[0028] Fig.10 It is another specific structural schematic diagram of the speed reduction mechanism.

[0029] Fig.11 It is a schematic diagram of the coordination between the driven wheel and the anti-return mechanism.

[0030] Fig.12 for Fig.10 Schematic diagram of the working principle of the reduction mechanism is shown.

[0031] Fig.13 for Fig.10 The schematic diagram shows the state in which the reduction mechanism cuts off the power.

[0032] In the figure: 1, frame, 2, trough body, 3, frame, 4, driven wheel, 5, motor device, 6, transmission device, 7, eccentric pin, 8, connecting rod, 9, driving wheel, 10, end pin, 11, raised part, 12, knife arm, 13, stirring shaft, 14, scraper, 15, spiral blade, 16, floating frame, 17, guide rod, 18, discharge port, 19, guide hole, 20, trough body, 21, end cover, 22, shaft wheel, 23, second reduction wheel, 24, first reduction wheel, 25, first pawl, 26, ratchet, 27, spring, 28, hinge seat, 29, cam, 30, roller, 31, push rod, 32, thrust spring, 33, rack, 34, locking bolt, 35, ratchet, 36, second pawl. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] See also Figure 1 , Figure 2 , Figure 3As shown, this embodiment shows a specific structural design of a mixing device for processing biological organic fertilizer in the present invention, which includes a motor device 5, a transmission device 6 and a shell supported and fixed by a frame 3 and distributed sequentially from front to back; the upper end of the shell is open for materials to be put into the shell, and a discharge port 18 is provided on the shell to discharge the mixed materials, and the discharge port 18 is usually arranged on one side or the bottom of the rear part of the shell; two stirring shafts 13 extending horizontally in the front and rear directions are provided in the shell, and the stirring shaft 13 is rotatably matched with the front and rear ends of the shell, and a plurality of evenly distributed spiral blades 15 are fixed on the stirring shaft 13, and the spiral blades 15 on the two stirring shafts 13 are usually staggered, and the two stirring shafts 13 are connected to the motor device 5 through the transmission device 6;

[0036] See also Figure 1-Figure 5 As shown, the shell is composed of a frame body 1 and a tank body 2 which are distributed up and down and communicate with each other, two stirring shafts 13 and a spiral blade 15 are located in the tank body 2, and the inner wall of the tank body 2 is a curved structure to match the stirring trajectory of the spiral blade 15; the frame body 1 is located above the tank body 2, and the frame body 1 has four inner walls distributed in a rectangular shape, and the inner walls are all located in a vertical plane; a floating frame 16 is provided above the shell, and the floating frame 16 can and can only be lifted and moved along the vertical direction, and a horizontally extending end pin 10 is fixed at each of the front and rear ends of the floating frame 16, and the floating frame 16 is fixed with four long strip-shaped scrapers 14 through a number of downwardly extending knife arms 12, and the lower end of the scraper 14 is a blade, and the scraper 14 is located in the frame body 1 and the blade is in contact with the four inner walls of the frame body 1 respectively; the floating frame 16 is provided with a plurality of blade arms 12 extending downward. When moving downward, the blades of the four scrapers 14 move up and down respectively along the four inner walls of the frame 1 to scrape off the materials adhered to the inner walls; a driven wheel 4 and a driving wheel 9 are rotatably fixed at the front and rear ends of the shell, and the driving wheel 9 is connected to the corresponding driven wheel 4 through a one-way driving mechanism, that is, when the driving wheel 9 rotates in one direction, it can drive the driven wheel 4 to rotate through the one-way driving mechanism, and when the driving wheel 9 rotates in the other direction, it cannot drive the driven wheel 4 to rotate; the two driving wheels 9 are each connected to the same stirring shaft 13 outside the shell through a reduction mechanism; an eccentric pin 7 is fixed on one side of the two driven wheels 4, and the eccentric pin 7 is connected to the corresponding end pin 10 through a connecting rod 8. In other words, the eccentric pin 7 and the end pin 10 on the same side of the shell are connected through a connecting rod 8;

[0037] When the mixing device is working, the motor device provides power to drive the two stirring shafts to rotate, and the spiral blades perform multiple functions such as stirring, cutting, and throwing the materials in the shell, so that the materials are quickly mixed and evenly transported from front to back; at the same time, Figure 5As shown, during the operation of the mixing device, the stirring shaft 13 drives the two driving wheels 9 to rotate through the reduction mechanism, and the driving wheels 9 can drive the corresponding driven wheels 4 to rotate through the one-way driving mechanism. The two driven wheels 4 drive the floating frame 16 to move back and forth up and down through the connecting rod 8. During the reciprocating movement of the four scrapers 14 with the floating frame 16, the materials adhered to the inner wall of the frame 1 can be scraped off, and the scraped materials fall back into the tank body 2 to continue to participate in mixing.

[0038] In the mixing device for processing bio-organic fertilizer, the motor device, transmission device, shell, stirring shaft and spiral blades substantially constitute a double-axis stirring and mixing equipment, thereby inheriting the technical advantages of high mixing efficiency, wide applicability, sustainable production and other technical advantages commonly possessed by previous double-axis stirring and mixing equipment; the rotation direction of the two stirring shafts and the specific shape and distribution position of the spiral blades can be set according to actual design requirements and application scenarios, referring to the commonly used methods in existing similar products.

[0039] like Figure 3 As shown, in the mixing device for processing biological organic fertilizer, the tank body 2 adopts a curved surface design, which can better cooperate with the stirring shaft 13 and the spiral blade 15 arranged therein to optimize the material flow path, enhance the shear force and extrusion effect and promote the efficient transfer of energy. The frame 1 is extended as the upper part of the tank body 2, and the upper side space of the tank body 2 is expanded to ensure that the material has sufficient movement space during the mixing process. Based on the above, the mixing efficiency and working performance of the mixing device are significantly improved compared with existing similar products.

[0040] like Figure 3 , Figure 5 As shown, in the mixing device for processing biological organic fertilizer, the shell is composed of a trough body 2 and a frame body 1 with different shape characteristics. The trough body 2 adopts a curved surface design that matches the stirring trajectory of the spiral blade 15. The spiral blade 15 can strongly act on the material close to the inner wall of the trough body 2 during rotation, thereby preventing the material from remaining on the inner wall of the trough body 2; a scraper 14 and related driving components are provided for the frame 1, which can effectively scrape off the adhered material on the inner wall of the frame 1; thereby, it is ensured that the inner walls of the trough body 2 and the frame 1 are not prone to produce material residues, thereby achieving the expected technical effect of the present invention.

[0041] In addition, if Figure 3-Figure 5 As shown, the frame 1 adopts a vertical inner wall design, which lays a convenient foundation for subsequent cleaning work. The scraper 14 cooperates with the frame 1 through simple up and down reciprocating movement, which can not only achieve a good scraping effect, but also significantly reduce the difficulty of setting the scraper 14 and related driving components, thereby improving the ease of implementation of the present invention.

[0042] like Figure 3As shown, in the mixing device for processing bio-organic fertilizer, the frame body 1 and the trough body 2 are actually two parts on the shell with different morphological characteristics, not specifically two independent parts. Therefore, the shell can be made in a flexible and diverse manner. For example, the shell includes a trough-shaped main body 20, which is formed by bending a piece of metal sheet or a plurality of metal sheets after being assembled, and has a bottom and two side parts. Both ends of the trough-shaped main body 20 are blocked by end covers 21 that are fixedly connected.

[0043] In the mixing device for processing bio-organic fertilizer, the floating frame is located above the shell and can only move in the vertical direction. The above-mentioned matching requirements between the floating frame and the shell can be achieved by setting a guide mechanism; for example, Figure 2 , Figure 3 , Figure 4 As shown, a plurality of vertical guide holes 19 are formed around the upper end of the shell, and a plurality of guide rods 17 extending downward and corresponding to the guide holes 19 are fixed on the floating frame 16. The guide rods 17 penetrate into the corresponding guide holes 19 and the two are slidably matched.

[0044] In the mixing device for processing bio-organic fertilizer, the speed reduction mechanism is arranged between the stirring shaft and the driving wheel, and its function is to reduce the speed of the stirring shaft and the driving wheel. Thus, when the stirring shaft performs mixing operation at a higher speed, the speed of the driving wheel is relatively low, thereby reducing the reciprocating movement frequency of the scraper, reducing unnecessary mechanical wear while ensuring the necessary scraping effect, and reducing the comprehensive operating energy consumption of the equipment.

[0045] Based on the above-mentioned setting intention of the speed reduction mechanism, it can be realized based on the commonly used transmission mechanisms such as gear transmission, worm gear transmission, belt transmission and chain transmission in the prior art, and after conventional adjustment, it is set between the stirring shaft and the driving wheel, which can meet the technical requirements for the speed reduction transmission in the present invention; for example, Figure 6 The specific implementation structure of a reduction mechanism is shown, and the reduction mechanism includes a shaft wheel 22, a first reduction wheel 24 and a second reduction wheel 23. The shaft wheel 22 is fixed on the stirring shaft 13, the first reduction wheel 24 and the second reduction wheel 23 are coaxially fixedly connected and rotatably fixed on the shell, the shaft wheel 22 is transmission-connected with the first reduction wheel 24, and the second reduction wheel 23 is transmission-connected with the driving wheel 9, and the wheel diameters of the shaft wheel 22 and the second reduction wheel 23 are smaller than the wheel diameter of the first reduction wheel 24; the transmission connection methods between the shaft wheel 22 and the first reduction wheel 24, and the second reduction wheel 23 and the driving wheel 9 include but are not limited to tooth transmission, belt transmission and chain transmission.

[0046] See also Figure 6 , Figure 7As shown in the figure, in the mixing device for processing biological organic fertilizer, the one-way driving mechanism is arranged between the driving wheel 9 and the driven wheel 4, and its function is to ensure that during the mixing process, the driving wheel 9 can drive the driven wheel 4 to rotate, so as to drive the floating frame 16 to operate with the help of the power of the stirring shaft 13, and at the same time, the driven wheel 4 can generate relative rotation with the driving wheel 9 under the drive of other external forces, so as to achieve overtaking of the driving wheel 9; for a more vivid understanding, the matching characteristics and working principles of the driving wheel 9, the driven wheel 4 and the one-way driving mechanism are similar to those of the prior art. The flywheel device of the rear axle of a bicycle in the prior art is consistent; as a result, the driving wheel 9 drives the driven wheel 4 to rotate through the one-way driving mechanism, which can drive the floating frame 16 to move upward, and when the floating frame 16 is descending, the driven wheel 4 can surpass the driving wheel 9, so that the floating frame 16 and the scraper 14 can obtain a faster downward movement speed based on the gravitational potential energy, that is, when the scraper 14 reciprocates at a low frequency, it still has a high downward movement speed to ensure the scraping effect of the adhered material, and helps to drive the scraped material to fall into the central area of ​​the trough body 2.

[0047] Based on the above-mentioned setting intention of the one-way drive mechanism, it can be realized based on the commonly used one-way drive mechanisms such as the ratchet mechanism and the one-way clutch in the prior art, and after conventional adjustment, it is set between the driving wheel and the driven wheel to meet the technical requirements of the one-way drive; for example, Figure 6 , Figure 7 A specific implementation structure of the one-way drive mechanism is shown, the driving wheel 9 is sleeved outside the driven wheel 4 and the axes of the two coincide, the one-way drive mechanism includes ratchet teeth 26 evenly distributed on the outer contour of the driven wheel 4, at least one first pawl 25 rotatably fixed on the driving wheel 9 and cooperating with the ratchet teeth 26, and an elastic member is fixed on the driving wheel 9 to drive the first pawl 25 to reset; thus, the ratchet teeth 26 and the first pawl 25 constitute a ratchet mechanism, which can achieve the technical requirements of one-way drive.

[0048] In summary, the bio-organic fertilizer processing and mixing device in the present invention has the technical advantages of high mixing efficiency, wide applicability, sustainable production, etc.; by improving the structure of the shell, the mixing efficiency is further improved, and the problem of material residue is effectively solved; by the matching arrangement of the speed reduction mechanism and the one-way drive mechanism, the scraper can achieve a good scraping effect through low-frequency reciprocating motion, effectively reducing the overall operating energy consumption of the equipment and improving the durability of the equipment; the operation of the floating frame and the scraper is powered by the stirring shaft, and there is no need to set up an additional power source, so that the equipment structure is more compact and the cost is reduced; therefore, based on the above advantages, the present bio-organic fertilizer processing and mixing device shows excellent comprehensive technical performance and economic benefits.

[0049] In addition, in order to make the mixing device for processing biological organic fertilizer in the present invention have better working performance, the following optional or preferred technical features are also included:

[0050] Optional, such as Figure 8 As shown, a plurality of hinge seats 28 are fixed on the floating frame 16, and the upper end of the knife arm 12 is rotatably connected to the hinge seat 28, so that the blade of the lower end of the scraper 14 can move away from and approach the inner wall of the frame 1, and a spring 27 that applies elastic force to the knife arm 12 is fixed on the hinge seat 28, so that the blade of the scraper 14 keeps in contact with the inner wall of the frame 1; thereby, the matching stability and tightness of the scraper 14 and the inner wall of the frame 1 can be improved; further, as Figure 1 , Fig. 9 As shown, a protrusion 11 is provided on the inner wall of the frame 1. When the scraper 14 moves to the highest position, the blade arm 12 or the scraper 14 abuts against the protrusion 11, so that the scraper 14 is separated from the inner wall of the frame 1, that is, a gap is formed between the scraper 14 and the inner wall of the frame 1, so that the material retained between the scraper 14 and the inner wall of the frame 1 can be moved out and fall into the trough body 2.

[0051] Optionally, the upper end of the shell is covered with a cover plate (not shown), and the cover plate should be provided with a through hole for the knife arm to pass through and move up and down; thereby, the cover plate can prevent the material from splashing out of the upper end of the shell when the mixing device is working. Since the knife arm can move up and down through the hole, the setting of the cover plate will not hinder the normal operation of the scraper and the floating frame.

[0052] Preferably, see Figure 10-12 As shown, the deceleration mechanism includes a cam 29, a push rod 31 and a rack 33. The cam 29 is fixed on a stirring shaft 13. The rack 33 is slidably fixed to the outside of the shell and can slide within a range along the length direction. The driving wheel 9 is a gear and meshes with the rack 33; one end of the rack 33 is fixedly connected to the push rod 31 and the push rod 31 can be telescopically adjusted. The push rod 31 is pushed by the contour of the cam 29. A thrust spring 32 is fixed outside the shell to drive the push rod 31 to move in the direction of the cam 29. A non-return mechanism is installed between the shell and the driven wheel 4; when the cam 29 pushes the push rod 31 to move, the driving wheel 9 can drive the driven wheel 4 to rotate through the one-way drive mechanism, and at this time, the rotation direction of the driven wheel 4 is not blocked by the non-return mechanism.

[0053] Based on the above structure, when the mixing device performs mixing work, Fig.12As shown, the cam 29 rotates synchronously with the stirring shaft 13, and the cam 29 cooperates with the thrust spring 32 to drive the rack 33 to move back and forth. When the rack 33 is away from the cam 29, the driving wheel 9 drives the driven wheel 4 to rotate synchronously through the one-way drive mechanism. When the rack 33 is close to the cam 29, the driving wheel 9 is driven by the rack 33 to rotate alone, and the driven wheel 4 does not rotate in the same direction as the driving wheel 9 under the action of the anti-return mechanism. Therefore, the continuous rotation of the cam 29 can drive the driven wheel 4 to rotate intermittently in one direction, thereby achieving the purpose of driving the floating frame to move reciprocatingly up and down.

[0054] When the deceleration mechanism adopts the above structure, on the one hand, the transmission function between the cam and the rack is not affected by the direction of the cam. Therefore, even in a mixing device with different mixing modes, the direction of the stirring shaft is different in different mixing modes, but it does not affect the normal operation of the scraper and its driving components, so that the technical solution of the present invention can be better compatible with the functional expansion of the mixing device; on the other hand, by adjusting the extension and contraction amount of the push rod on the rack, the stroke length of the rack during the rotation of the cam can be adjusted, thereby realizing the regulation of the reciprocating frequency of the floating frame. Specifically, Fig.12 As shown in FIG. 1 , when the ejector rod 31 extends a large distance relative to the rack 33, the ejector rod 31 can be in contact with the rack 33 throughout the rotation of the cam 29. Then, when the cam 29 rotates, the travel of the rack 33 is large. At this time, the reciprocating frequency of the floating frame 16 is high. Otherwise, the reciprocating frequency of the floating frame 16 is low. In particular, Fig.13 As shown, when the material to be mixed is relatively dry and not easy to adhere to the inner wall of the frame, the extension of the push rod 31 relative to the rack 33 can be adjusted to a minimum, so that the cam 29 will not be in a mating state with the push rod 31 during the rotation process, thereby cutting off the power between the stirring shaft 13 and the rack 33, so that the floating frame, the scraper and related transmission components are all kept stationary, so as to avoid the scraper and other components running under unnecessary circumstances and generating energy waste; in addition, the above structure can obtain a higher reduction ratio, has a higher transmission efficiency, and has a relatively simple structure and is easy to implement.

[0055] Furthermore, if Fig.11 As shown, the anti-return mechanism is a ratchet mechanism, which is composed of a ratchet 35, a second pawl 36 and an elastic member. The ratchet 35 is fixedly connected to the driven wheel 4 and the axes coincide with each other. The second pawl 36 is rotatably fixed on the housing, and the elastic member drives the second pawl 36 to reset.

[0056] Furthermore, if Fig.10 As shown, a socket is provided at one end of the rack 33 , and the push rod 31 is plugged into the socket. A locking bolt 34 for locking the push rod 31 is installed on the rack 33 .

[0057] Furthermore, if Fig.10As shown, a roller 30 is rotatably fixed to one end of the push rod 31 close to the cam 29 , and the roller 30 is used to contact and cooperate with the contour of the cam 29 .

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0059] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A mixing device for processing biological organic fertilizer, comprising a housing, a transmission device and a motor device, wherein two stirring shafts extending horizontally in the front-rear direction are arranged in the housing, the stirring shafts are rotationally matched with the front and rear ends of the housing, a spiral blade is fixed on the stirring shaft, and the two stirring shafts are connected to the motor device through the transmission device; wherein the stirring shafts are characterized in that: The shell is composed of a frame body and a tank body that are distributed and communicated with each other up and down; two stirring shafts and spiral blades are located in the tank body, and the inner wall of the tank body is a curved structure to match the stirring trajectory of the spiral blade; the frame body is located above the tank body and has four inner side walls located in a vertical plane and distributed in a rectangular shape; a floating frame that can move vertically is defined above the shell, and an end pin is fixed at each of the front and rear ends of the floating frame, and four scrapers are fixed to the floating frame through a number of knife arms, and the lower ends of the scrapers are blades; when the floating frame moves up and down, the blades of the four scrapers move up and down respectively against the four inner side walls of the frame body; a driven wheel and a driving wheel are rotatably fixed at each of the front and rear ends of the shell, and the driving wheel is connected to the corresponding driven wheel through a one-way driving mechanism; the two driving wheels are each connected to the same stirring shaft through a reduction mechanism; an eccentric pin is fixed on one side of the driven wheel, and the eccentric pin is connected to the corresponding end pin through a connecting rod; when the mixing device is working, the driving wheel drives the driven wheel to rotate through the one-way driving mechanism, and the two driven wheels drive the floating frame to move back and forth up and down through the connecting rod; The deceleration mechanism comprises a cam, a push rod and a rack; the cam is fixed on a stirring shaft; the rack is slidably fixed to the outside of the shell and can slide within a range along the length direction; the driving wheel is a gear and meshes with the rack; one end of the rack is fixedly connected to the push rod and the push rod can be telescopically adjusted; the push rod is pushed by the profile of the cam; a thrust spring for driving the push rod to move in the direction of the cam is fixed outside the shell; a non-return mechanism is installed between the shell and the driven wheel; when the cam pushes the push rod to move, the driving wheel can drive the driven wheel to rotate through the one-way driving mechanism, and at this time, the rotation direction of the driven wheel is not blocked by the non-return mechanism; A plurality of hinge seats are fixed on the floating frame, and the upper end of the knife arm is rotatably connected to the hinge seat, so that the blade at the lower end of the scraper can move away from and approach the inner wall of the frame body. A spring sheet that applies elastic force to the knife arm is fixed on the hinge seat, so that the blade of the scraper keeps in contact with the inner wall of the frame body; a protrusion is provided on the inner wall of the frame body, and when the scraper moves to the highest position, the knife arm or the scraper abuts against the protrusion, so that the scraper is separated from the inner wall of the frame body; the deceleration mechanism includes a shaft wheel, a first deceleration wheel and a second deceleration wheel, and the shaft wheel is fixed On the stirring shaft, the first reduction wheel is coaxially fixedly connected with the second reduction wheel and rotatably fixed on the shell, the shaft wheel is transmission-connected with the first reduction wheel, the second reduction wheel is transmission-connected with the driving wheel, and the wheel diameters of the shaft wheel and the second reduction wheel are smaller than the wheel diameter of the first reduction wheel; the one-way driving mechanism includes ratchets evenly distributed on the outer contour of the driven wheel, at least one first pawl rotatably fixed on the driving wheel and cooperating with the ratchet, an elastic member for driving the first pawl to reset is fixed on the driving wheel, and the ratchet and the first pawl constitute a ratchet mechanism.

2. The bio-organic fertilizer processing mixing device according to claim 1, characterized in that: A plurality of vertical guide holes are formed around the upper end of the shell, and a plurality of guide rods extending downward and corresponding to the guide holes are fixed on the floating frame. The guide rods penetrate into the corresponding guide holes and the two are slidably matched.

3. The bio-organic fertilizer processing mixing device according to claim 1, characterized in that: The anti-return mechanism is a ratchet mechanism, which is composed of a ratchet, a second pawl and an elastic member. The ratchet is fixedly connected to the driven wheel and their axes coincide with each other. The second pawl is rotatably fixed on the housing, and the elastic member drives the second pawl to reset.

4. The bio-organic fertilizer processing mixing device according to claim 1, characterized in that: A socket is provided at one end of the rack, the push rod is plugged into the socket, and a locking bolt for locking the push rod is installed on the rack.

5. The bio-organic fertilizer processing mixing device according to claim 1, characterized in that: A roller is rotatably fixed on one end of the push rod close to the cam, and the roller is used for contacting and cooperating with the profile of the cam.

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