Liquid fertilizer applicator
By designing a multi-stage mixing and dilution process for the liquid fertilizer application device, the problems of sedimentation and clumping of polypeptide concentrate and uneven mixing were solved, thereby improving the fertilization effect and utilization rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI GUOLIAN ENVIRONMENTAL SCI & TECH
- Filing Date
- 2025-04-28
- Publication Date
- 2026-06-12
Smart Images

Figure CN224343835U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of novel liquid fertilizer applications and relates to a liquid fertilizer application device. Background Technology
[0002] Plants need nutrients such as nitrogen, phosphorus, potassium, organic matter, and minerals to grow, especially nitrogen, phosphorus, and potassium. Chemical fertilizers have been widely used due to their mature production processes, controllable costs, ease of application, and significant fertilizer effects. However, the excessive application of chemical fertilizers to arable land can lead to problems such as soil compaction and reduced permeability.
[0003] Against this backdrop, fertilizer manufacturers both domestically and internationally are actively developing new types of fertilizers that supplement soil nitrogen, phosphorus, and potassium while also replenishing organic matter, thus overcoming the various drawbacks of traditional inorganic fertilizers.
[0004] Municipal sewage sludge contains a large amount of organic matter and nutrients such as nitrogen, phosphorus, and potassium. By adding alkaline agents to municipal sewage sludge and heating and hydrolyzing it, the proteins in the sludge can be decomposed into polypeptides, dipeptides, and amino acids. After solid-liquid separation and concentration, the proteins in municipal sewage sludge are transformed into a polypeptide concentrate rich in organic nitrogen, becoming a new type of liquid fertilizer.
[0005] Polypeptide concentrate is a novel type of liquid fertilizer. It is viscous and has a high density (approximately 1.2 g / cm³). 3 -1.3g / cm 3 It is rich in polypeptides, amino acids and organic matter. When mixed with water, it tends to sink due to its high density. Therefore, it needs to be diluted with water many times before use. Existing dilution methods have problems such as fertilizer settling and clumping, and uneven mixing, which affect the fertilization effect. Summary of the Invention
[0006] To address the aforementioned technical problems, this utility model provides a liquid fertilizer application device that enables uniform mixing of polypeptide concentrate and water, preventing sedimentation and clumping, thereby improving the fertilization effect.
[0007] The technical solution is as follows: A liquid fertilizer application device, characterized in that it includes a mixing tank, which is divided into a secondary mixing zone, a buffer zone, a tertiary mixing zone, and a fertilizer storage zone by a partition. The secondary mixing zone is provided with a mixing tank with a top opening, and a first stirring device is provided in the mixing tank. The mixing tank is provided with a preliminary dilution water inlet pipe and a polypeptide concentrate inlet pipe corresponding to the opening of the mixing tank. The tertiary mixing zone is provided with a second stirring device, and a deep dilution water inlet pipe corresponding to the tertiary mixing zone is provided in the mixing tank. The fertilizer storage zone is provided with a fertilizer discharge port.
[0008] A further feature is that a first one-way valve is provided at the bottom of the partition between the secondary mixing zone and the buffer zone, an overflow gap is left between the upper end of the partition between the buffer zone and the tertiary mixing zone and the top inner wall of the mixing box, and a second one-way valve is provided at the bottom of the partition between the tertiary mixing zone and the fertilizer storage zone.
[0009] The first check valve and the second check valve are equipped with a stirring mechanism connected to a micro motor;
[0010] A return pipe is provided between the three mixing zone and the two mixing zone;
[0011] The first stirring device includes a first drive motor installed outside the housing and a stirring shaft extending into the mixing tank;
[0012] The second stirring device includes a second drive motor installed outside the mixing chamber and a stirring shaft extending into the three mixing zones;
[0013] The mixing zone is equipped with a support frame to support the mixing tank.
[0014] By adopting this invention, the polypeptide concentrate is gradually mixed and diluted through mixing tank, secondary mixing zone, and tertiary mixing zone. By increasing the mixing time in the buffer zone, the viscosity is gradually reduced, which solves the problems of sedimentation and clumping and uneven mixing, and improves the utilization rate of polypeptide concentrate. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the first one-way valve structure. Detailed Implementation
[0017] See Figure 1As shown, a liquid fertilizer application device includes a mixing tank 1. The mixing tank 1 is divided into a secondary mixing zone 3, a buffer zone 4, a tertiary mixing zone 5, and a fertilizer storage zone 6 by a partition 2. A mixing tank 7 with a top opening is installed in the secondary mixing zone 3. The mixing tank 7 is supported by a bottom bracket 8. A first stirring device is installed inside the mixing tank 7. The first stirring device includes a first drive motor 9 installed outside the mixing tank 1 and a first stirring shaft 10 extending into the mixing tank 7. Corresponding mixing tanks 7 are mounted on the mixing tank 1. The mixing chamber 1 has an opening for a preliminary dilution water inlet pipe 11 and a polypeptide concentrate inlet pipe 12. A second stirring device is provided in the three-mixing zone 5. The second stirring device includes a second drive motor 13 installed outside the mixing chamber 1 and a second stirring shaft 14 extending into the three-mixing zone 5. A deep dilution water inlet pipe 15 corresponding to the three-mixing zone 5 is provided on the mixing chamber 1. A return pipe 16 is provided between the three-mixing zone 5 and the two-mixing zone 3. The return power is provided by a pump. A fertilizer discharge port 17 is provided at the bottom of the side wall of the fertilizer storage area 6.
[0018] A first one-way valve 18 is installed at the bottom of the partition between the secondary mixing zone 3 and the buffer zone 4. An overflow gap is left between the upper end of the partition between the buffer zone 4 and the tertiary mixing zone 5 and the top inner wall of the mixing chamber 1. A second one-way valve 19 is installed at the bottom of the partition between the tertiary mixing zone 5 and the fertilizer storage zone 6. The first one-way valve 18 and the second one-way valve 19 have a stirring function, which can realize simultaneous conveying and mixing. The first one-way valve 18 and the second one-way valve 19 have the same structure. Taking the first one-way valve 18 as an example, the specific structure is as follows: Figure 2 As shown, the device includes a valve body 181, with a liquid inlet 182 and a liquid outlet 183 at both ends. A valve core 185 with two springs 184 is installed inside the valve body 181. A stirring mechanism 186 is installed at the liquid outlet 183. The stirring mechanism 186 is connected to a micro motor 187 installed on the outer wall of the valve body 181. A protective cover 188 is installed on the outside of the micro motor to prevent it from contacting the material.
[0019] The mixing principle is as follows: The polypeptide concentrate and the initial dilution water enter the mixing tank 7 through the polypeptide concentrate inlet pipe 12 and the initial dilution water inlet pipe 11, respectively. Under the stirring action of the first stirring device, the polypeptide concentrate settled at the bottom of the mixing tank 7 is initially mixed with the water. The initially diluted polypeptide concentrate overflows from the mixing tank 7 and enters the secondary mixing zone 3, where it mixes with the liquid from the tertiary mixing zone 5 in the return pipe 16. The liquid level in the secondary mixing zone 3 is always lower than the highest point of the mixing tank 7 and the outlet position of the return pipe 16 in the secondary mixing zone 3. The mixture in the secondary mixing zone 3 is transported to the buffer zone 4 via the first one-way valve 18, where it is further mixed under the action of the stirring mechanism within the first one-way valve.
[0020] After the liquid level in buffer zone 4 rises, it automatically overflows into the three-stage mixing zone 5. Simultaneously, deep dilution water enters the three-stage mixing zone 5 from the deep dilution water inlet pipe 15 at the top of the zone, mixing with the overflowing liquid. Under the action of the second stirring device, the liquid undergoes three stages of mixing and dilution. The liquid in the three-stage mixing zone 5 is then transported to the fertilizer storage zone 6, where the diluted liquid is stored, via the second one-way valve 19. The second one-way valve 19 performs final stirring during the transport process. The completely diluted polypeptide solution is stored in the fertilizer storage zone 6. During application, it can be used for flood irrigation, drip irrigation, or emptying of the tank after fertilization via the fertilizer discharge port 17.
Claims
1. A liquid fertilizer application device, characterized in that, It includes a mixing chamber, which is divided into a secondary mixing zone, a buffer zone, a tertiary mixing zone, and a fertilizer storage zone by partitions. The secondary mixing zone is equipped with a mixing tank with a top opening and a first stirring device inside the mixing tank. The mixing chamber is equipped with a preliminary dilution water inlet pipe and a polypeptide concentrate inlet pipe corresponding to the opening of the mixing tank. The tertiary mixing zone is equipped with a second stirring device and a deep dilution water inlet pipe corresponding to the tertiary mixing zone. The fertilizer storage zone is equipped with a fertilizer discharge port.
2. The liquid fertilizer application device according to claim 1, characterized in that, A first one-way valve is provided at the bottom of the partition between the secondary mixing zone and the buffer zone. An overflow gap is left between the upper end of the partition between the buffer zone and the tertiary mixing zone and the top inner wall of the mixing box. A second one-way valve is provided at the bottom of the partition between the tertiary mixing zone and the fertilizer storage zone.
3. The liquid fertilizer application device according to claim 2, characterized in that, The first check valve and the second check valve are equipped with a stirring mechanism connected to a micro motor.
4. The liquid fertilizer application device according to claim 1, characterized in that, A return pipe is provided between the three mixing zone and the two mixing zone.
5. A liquid fertilizer application device according to claim 1, characterized in that, The first stirring device includes a first drive motor installed outside the housing and a stirring shaft extending into the mixing tank.
6. A liquid fertilizer application device according to claim 1, characterized in that, The second stirring device includes a second drive motor installed outside the mixing chamber and a stirring shaft extending into the three mixing zones.
7. A liquid fertilizer application device according to claim 1, characterized in that, The mixing zone is equipped with a support frame to support the mixing tank.