A planting soil mixing device
By designing a soil mixing device, using a mixing tank, centrifugal sieve, and granulation and crushing device, fertilizer and powder are efficiently mixed with soil, solving the problems of high stickiness and poor permeability of soil, forming loose soil suitable for plant growth, and reducing engineering costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU XINTIANKUN ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-02
AI Technical Summary
Existing planting soils have high cohesiveness, lack of air permeability and trace elements when mixed, making them difficult to use directly for plant growth. Furthermore, the soil formed during construction requires long-term sedimentation and improvement, resulting in high project costs.
Design a soil mixing device, including a mixing tank, a centrifugal screen, and a granulation and crushing device. The device uses a motor to drive mixing blades, pressure rollers, scrapers, and other components to mix and granulate fertilizers, powders, and soil, thereby improving soil permeability and reducing viscosity to form fine granular soil.
It improves soil permeability and fertility, reduces viscosity, and forms loose, fine-particle soil, which facilitates later cultivation and saves engineering costs.
Smart Images
Figure CN224308189U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soil improvement equipment, specifically to a soil mixing device for planting. Background Technology
[0002] Existing planting soils often have a certain degree of looseness in their base soil (usually garden soil) when mixed. By adding various additives (such as coconut fiber bricks, river sand, fertilizer, and bark), they are improved to form characteristics that are conducive to plant growth. However, the soil excavated during most engineering construction is sticky and lacks humus due to its deep burial, which is not conducive to plant growth. It often needs to be piled up and allowed to slowly become suitable for plant growth through long-term natural sedimentation. If such soils are utilized and artificially improved into planting soil suitable for planting in landscaping and other applications, engineering costs will be greatly reduced. Utility Model Content
[0003] Based on the above problems, the purpose of this utility model is to provide a planting soil mixing device that can be used for deep clay improvement to enhance soil permeability and trace elements.
[0004] To address the above problems, the following technical solution is provided: A planting soil mixing device includes a frame, a mixing drum mounted on the frame, a mixing paddle driven by a motor inside the mixing drum, a feed inlet and a discharge outlet at the top and bottom of the mixing drum, respectively, and a centrifugal screen and a granulation and crushing device mounted on the frame. The centrifugal screen has a first feed hopper and a second feed hopper, and a discharge outlet connected to the inner cavity of the mixing drum at the bottom of the centrifugal screen. The granulation and crushing device includes a granulation cylinder, a main shaft coaxially mounted and driven by a motor inside the granulation cylinder, a receiving port corresponding to the discharge outlet at the top of the granulation cylinder, a pressure plate inside the receiving port, a plurality of granulation holes evenly distributed on the surface of the pressure plate, the main shaft passing through the pressure plate from bottom to top and having a pressure roller in contact with the upper surface of the pressure plate, the axis of the pressure roller pointing towards the center of the main shaft, a scraper rotating with the main shaft and in contact with the lower surface of the pressure plate on the lower surface of the pressure plate, and an outlet corresponding to the position below the pressure plate on the granulation cylinder.
[0005] In the above structure, the first feed hopper is used to feed fertilizer, and the second feed hopper is used to feed powder (such as cinder, coarse river sand, pumice, or perlite). After being crushed by a centrifugal screen, the powder is fed into a mixing tank and mixed with the soil inside the tank. This process improves soil fertility, increases soil permeability, and reduces viscosity. The moisture content is adjusted by adding water or powder, creating conditions for the granulation and crushing device. After the fertilizer, powder, and soil are mixed, they are discharged into the receiving port through the discharge port. At this time, the pressure roller at the receiving port rotates with the main shaft, grinding the mixture on the upper surface of the pressure plate into the granulation hole and extruding it from the lower surface of the pressure plate. During this process, the temperature of the mixture increases, and the extruded mixture is cut and falls by a scraper to form fine particles. Evaporation further reduces moisture and prevents sticking, providing the necessary conditions for maintaining soil looseness and facilitating the creation of a looseness and permeability for later cultivation.
[0006] The present invention is further configured such that the first feed hopper is equipped with a material control valve.
[0007] In the above structure, the material control valve is used to control the flow rate of fertilizer supplied to the centrifugal screen from the first feed hopper.
[0008] The present invention is further configured such that the mixing tank is a horizontal mixing tank, the mixing blades are arranged in a spiral shape, the discharge port is located at the bottom of one end of the mixing tank, and the discharge outlet is located on the side wall or top of the mixing tank away from the discharge outlet in the axial direction.
[0009] The above structure ensures that the material is mixed and crushed during the propulsion process of the mixing blades.
[0010] The present invention is further configured such that there are several pressure rollers, which are evenly distributed along the circumferential direction of the main shaft.
[0011] In the above structure, there are preferably two pressure rollers. The outer cylindrical wall of the pressure roller is provided with several extrusion grooves that are evenly distributed along its circumferential direction and opened in its axial direction. The extrusion grooves can improve the squeezing effect on the material during the crushing process, causing it to heat up and improve the subsequent drying effect.
[0012] The present invention is further configured such that the scraper consists of several pieces, which are connected to the sliding key on the main shaft through a sliding sleeve; the main shaft is also provided with an axial stop and a pressing spring, one end of the pressing spring abuts against the axial stop and the other end abuts against the sliding sleeve to press the scraper against the lower surface of the pressure plate.
[0013] In the above structure, the scraper blade is preferably made of cemented carbide, and the compression spring can ensure that the scraper is always in contact with the lower surface of the pressure plate to cut the extruded material.
[0014] The present invention is further configured such that the main shaft is also provided with a centrifugal swirl plate located below the scraper, and the upper surface of the centrifugal swirl plate is flush with the lower side of the outlet.
[0015] In the above structure, when the material that has been cut and granulated by the scraper comes into contact with the centrifugal disc, it is thrown out of the outlet by the centrifugal disc to achieve discharge.
[0016] The present invention is further provided that the upper surface of the centrifugal spinning disc is provided with a plurality of striking ribs evenly distributed along its circumferential direction and opened in its radial direction.
[0017] In the above structure, the impact ribs collide with the material as it falls, crushing it into finer particles and further improving the drying effect.
[0018] The present invention is further configured such that the first contact line formed by the pressure roller and the pressure plate abutting against each other, and the second contact line formed by the scraper and the pressure plate abutting against each other, are staggered from each other on the horizontal projection plane.
[0019] In the above structure, the material at the first contact line formed when the pressure roller rolls over the pressure plate is not blocked by the scraper at the second contact line when it is extruded, thus affecting the material discharge.
[0020] The present invention is further configured such that the first contact line in the rotation direction of the main shaft is located in front of the second contact line.
[0021] In the above structure, the material is extruded in a certain amount and then immediately cut off.
[0022] The beneficial effects of this utility model are as follows: The first feed hopper is used to feed fertilizer, and the second feed hopper is used to feed powder (such as coal slag, coarse river sand, pumice, or perlite). After being crushed by a centrifugal screen, the powder is fed into a mixing tank and mixed with the soil inside the mixing tank. This improves the fertility, increases the soil's internal permeability, and reduces its viscosity. At the same time, the moisture content is adjusted by adding water or powder, creating conditions for the granulation and crushing device. After the fertilizer, powder, and soil are mixed, they are discharged into the receiving port through the discharge port. At this time, the pressure roller at the receiving port rotates with the main shaft, crushing the mixture on the upper surface of the pressure plate into the granulation hole and extruding it from the lower surface of the pressure plate. During this process, the temperature of the mixture increases, and the extruded mixture is cut and falls by a scraper to form fine particles. The moisture content is further reduced by evaporation to prevent sticking, providing the necessary conditions for maintaining soil looseness and facilitating the creation of a looseness and permeability for later cultivation. Attached Figure Description
[0023] Figure 1 This is a first three-dimensional structural diagram of the present invention.
[0024] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention.
[0025] Figure 3 This is a schematic diagram of the full cross-sectional structure of the granulation and pulverizing device of this utility model.
[0026] Figure 4 This utility model Figure 1 A magnified structural diagram of part A.
[0027] The labels in the diagram mean: 10-Frame; 20-Mixing tank; 21-Mixing blade; 22-Feed inlet; 23-Discharge outlet; 30-Centrifugal screen; 31-First feed hopper; 311-Control valve; 32-Second feed hopper; 33-Discharge outlet; 40-Pelletizing and crushing device; 41-Pelletizing cylinder; 411-Outlet; 42-Main shaft; 421-Slide key; 422-Axial stop; 423-Pressure spring; 43-Material inlet; 44-Pressure plate; 441-Pelletizing hole; 45-Pressure roller; 451-Extrusion groove; 46-Scraper; 461-Sliding sleeve; 47-Centrifugal disc; 471-Impact rib. Detailed Implementation
[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0029] refer to Figures 1 to 4 ,like Figures 1 to 4 The illustrated planting soil mixing device includes a frame 10, on which a mixing drum 20 is mounted. The mixing drum 20 contains a mixing paddle 21 driven by a motor. The top and bottom of the mixing drum 20 are respectively provided with a feed inlet 22 and a discharge outlet 23. The frame 10 also includes a centrifugal screen 30 and a granulation and crushing device 40. The centrifugal screen 30 has a first feed hopper 31 and a second feed hopper 32, and its bottom has a discharge outlet 33 connected to the inner cavity of the mixing drum 20. The granulation and crushing device 40 includes a granulation cylinder 41, inside which is a coaxial... A main shaft 42 driven by a motor is provided. The top of the granulation cylinder 41 is provided with a receiving port 43 corresponding to the discharge port 23. A pressure plate 44 is provided inside the receiving port 43. The surface of the pressure plate 44 is evenly distributed with a plurality of granulation holes 441. The main shaft 42 passes through the pressure plate 44 from bottom to top and is provided with a pressure roller 45 that abuts against the upper surface of the pressure plate 44. The axis of the pressure roller 45 points to the center of the main shaft 42. A scraper 46 is provided on the lower surface of the pressure plate 44 that rotates with the main shaft 42 and abuts against the lower surface of the pressure plate 44. The granulation cylinder 41 is provided with an outlet 411 corresponding to the position below the pressure plate 44.
[0030] In the above structure, the first feed hopper 31 is used to feed fertilizer, and the second feed hopper 32 is used to feed powder (such as coal slag, coarse river sand, pumice, or perlite). After being crushed by the centrifugal screen 30, the powder is fed into the mixing tank 20 and mixed with the soil inside the mixing tank 20. This process improves the soil's internal permeability and reduces its viscosity while enhancing its fertility. At the same time, the moisture content is adjusted by adding water or powder, creating conditions for the granulation and crushing device 40. After the fertilizer, powder, and soil are mixed, they are discharged into the receiving port 43 through the discharge port 23. At this time, the pressure roller 45 of the receiving port 43 rotates with the main shaft 42, grinding the mixture on the upper surface of the pressure plate 44 into the granulation hole 441 and extruding it from the lower surface of the pressure plate 44. During this process, the temperature of the mixture increases, and the extruded mixture is cut and falls by the scraper 46 to form fine particles. The moisture content is further reduced by evaporation to prevent sticking, providing the necessary conditions for maintaining soil looseness and facilitating the creation of a virtual looseness and permeability for later cultivation.
[0031] In this embodiment, the first feed hopper 31 is equipped with a material control valve 311.
[0032] In the above structure, the material control valve 311 is used to control the flow rate of fertilizer supplied to the centrifugal screen 30 by the first feed hopper 31.
[0033] In this embodiment, the mixing tank 20 is a horizontal mixing tank, the mixing blade 21 is arranged in a spiral shape, the discharge port 23 is located at the bottom of one end of the mixing tank 20, and the discharge port 33 is located on the side wall or top of the mixing tank 20 away from the discharge port 23 in the axial direction.
[0034] The above structure ensures that the material is mixed and crushed during the propulsion process of the mixing blade 21.
[0035] In this embodiment, there are several pressure rollers 45, which are evenly distributed along the circumferential direction of the main shaft 42.
[0036] In the above structure, there are preferably two pressure rollers 45. The outer cylindrical wall of the pressure roller 45 is provided with a number of extrusion grooves 451 that are evenly distributed along its circumferential direction and opened in its axial direction. The extrusion grooves 451 can improve the squeezing effect on the material during the crushing process, causing it to heat up and improve the subsequent drying effect.
[0037] In this embodiment, the scraper 46 consists of several pieces, which are connected to the slide key 421 on the main shaft 42 via the sliding sleeve 461; the main shaft 42 is also provided with an axial stop 422 and a pressing spring 423, one end of the pressing spring 423 abuts against the axial stop 422, and the other end abuts against the sliding sleeve 461 to press the scraper 46 against the lower surface of the pressure plate 44.
[0038] In the above structure, the cutting edge of the scraper 46 is preferably made of cemented carbide, and the compression spring 423 can ensure that the scraper 46 is always in contact with the lower surface of the pressure plate 44 to cut off the extruded material.
[0039] In this embodiment, the main shaft 42 is also provided with a centrifugal swirl plate 47 located below the scraper 46, and the upper surface of the centrifugal swirl plate 47 is flush with the lower side of the outlet 411.
[0040] In the above structure, when the material cut and granulated by the scraper 46 comes into contact with the centrifugal throwing disc 47, it is thrown out from the outlet 411 by the centrifugal throwing disc 47 to achieve discharge.
[0041] In this embodiment, the upper surface of the centrifugal spinning disc 47 is provided with a plurality of striking ribs 471 that are evenly distributed along its circumferential direction and opened in its radial direction.
[0042] In the above structure, the impact rib 471 impacts the material as it falls, crushing it into finer particles and further improving the drying effect.
[0043] In this embodiment, the first contact line formed by the pressure roller 45 and the pressure plate 44 abutting each other, and the second contact line formed by the scraper 46 and the pressure plate 44 abutting each other, are offset from each other on the horizontal projection plane.
[0044] In the above structure, the material at the first contact line formed when the pressure roller 45 rolls over the pressure plate 44 is blocked by the scraper 46 at the second contact line position during extrusion, which affects the material discharge.
[0045] In this embodiment, the first contact line in the rotation direction of the main shaft 42 is located in front of the second contact line.
[0046] In the above structure, the material is extruded in a certain amount and then immediately cut off.
[0047] The beneficial effects of this utility model are as follows: The first feed hopper 31 is used to feed fertilizer, and the second feed hopper 32 is used to feed powder (such as coal slag, coarse river sand, pumice, or perlite). After being crushed by the centrifugal sieve 30, the powder is fed into the mixing tank 20 and mixed with the soil in the mixing tank 20. This improves the fertility, increases the internal permeability of the soil, and reduces the viscosity. At the same time, the humidity is adjusted by adding water or powder, which creates conditions for the granulation and crushing device 40. After the fertilizer, powder and soil are mixed, they are discharged into the receiving port 43 through the discharge port 23. At this time, the pressure roller 45 of the receiving port 43 rotates with the main shaft 42, which crushes the mixture on the upper surface of the pressure plate 44 into the granulation hole 441 and squeezes it out from the lower surface of the pressure plate 44. During this process, the temperature of the mixture increases, and the squeezed mixture is cut and falls by the scraper 46 to form fine particles. The moisture is further reduced by evaporation to avoid sticking, which provides the necessary conditions for maintaining the looseness of the soil and facilitates the creation of a virtual looseness and permeability for later cultivation.
[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.
Claims
1. A soil mixing device, comprising a frame, a mixing drum mounted on the frame, a mixing paddle driven by a motor inside the mixing drum, and an inlet and an outlet respectively located at the top and bottom of the mixing drum, characterized in that: The frame is also equipped with a centrifugal screen and a granulation and pulverizing device. The centrifugal screen is provided with a first feed hopper and a second feed hopper. The bottom of the centrifugal screen is provided with a discharge port connected to the inner cavity of the mixing tank. The granulation and pulverizing device includes a granulation cylinder. The granulation cylinder is provided with a main shaft that is coaxially arranged with it and driven by a motor. The top of the granulation cylinder is provided with a receiving port corresponding to the discharge port. The receiving port is provided with a pressure plate. The surface of the pressure plate is evenly distributed with a plurality of granulation holes. The main shaft passes through the pressure plate from bottom to top and is provided with a pressure roller that abuts against the upper surface of the pressure plate. The axis of the pressure roller points to the center of the main shaft. The lower surface of the pressure plate is provided with a scraper that rotates with the main shaft and abuts against the lower surface of the pressure plate. The granulation cylinder is provided with an outlet corresponding to the position below the pressure plate.
2. The planting soil mixing device according to claim 1, characterized in that: The first feed hopper is equipped with a material control valve.
3. The planting soil mixing device according to claim 1, characterized in that: The mixing tank is a horizontal mixing tank, the mixing blades are arranged in a spiral shape, the discharge port is located at the bottom of one end of the mixing tank; the discharge port is located on the side wall or top of the mixing tank away from the discharge port in the axial direction.
4. The planting soil mixing device according to claim 1, characterized in that: The pressure rollers are a number of rollers, which are evenly distributed along the circumferential direction of the main shaft.
5. The planting soil mixing device according to claim 1, characterized in that: The scraper consists of several blades, which are connected to the sliding key on the main shaft via a sliding sleeve. The main shaft is also equipped with an axial stop and a pressure spring. One end of the pressure spring abuts against the axial stop, and the other end abuts against the sliding sleeve to press the scraper against the lower surface of the pressure plate.
6. The planting soil mixing device according to claim 1, characterized in that: The main shaft is also equipped with a centrifugal swivel disc located below the scraper, and the upper surface of the centrifugal swivel disc is flush with the lower side of the outlet.
7. A planting soil mixing device according to claim 6, characterized in that: The upper surface of the centrifugal disc is provided with several impact ribs that are evenly distributed along its circumferential direction and open in its radial direction.
8. The planting soil mixing device according to claim 1, characterized in that: The first contact line formed by the pressure roller and the pressure plate, and the second contact line formed by the scraper and the pressure plate, are offset from each other on the horizontal projection plane.
9. A planting soil mixing device according to claim 1, characterized in that: The first contact line is located in front of the second contact line in the direction of spindle rotation.