Liquid water-soluble fertilizer static mixer

Abstract

The utility model discloses a liquid water-soluble fertilizer static mixer which comprises a feeding pipe, a mixing pipe and a discharging pipe, a foaming pipe is arranged between the feeding pipe and the mixing pipe, the mixing pipe comprises a first pipe body and a mixing unit, the mixing unit is fixedly installed in the first pipe body, the discharging pipe is fixedly installed at the end, away from the feeding pipe, of the mixing pipe, and the foaming pipe is arranged between the feeding pipe and the mixing pipe. The discharging pipe comprises a second pipe body, a discharging opening and a thermometer, the discharging opening is fixedly installed on the lower end face of the second pipe body, the thermometer is fixedly installed on the side end face of the second pipe body, the foaming pipe comprises a Venturi pipe, an air inlet pipe and a valve plate, the air inlet pipe is fixedly installed on the upper end face of the throat portion of the Venturi pipe and is in through connection with the Venturi pipe, and the valve plate is movably installed in the air inlet pipe. The mixer has the advantages of high mixing efficiency, controllable bubbles, backflow prevention and convenience in operation, and solves the problems of low mixing efficiency, low dissolving speed and easiness in sedimentation and layering of a traditional mixer.

Description

Technical Field

[0001] This utility model relates to the field of static mixer technology, specifically a static mixer for liquid water-soluble fertilizer. Background Technology

[0002] With the development of modern agriculture, fertigation technology has gradually become an important means to improve crop yield and resource utilization efficiency. Liquid water-soluble fertilizers, due to their advantages such as good solubility, rapid nutrient release, and ease of application, have been widely used in agricultural production. In the production and use of liquid water-soluble fertilizers, it is often necessary to efficiently mix multiple fertilizer components to obtain a uniform and stable fertilizer solution. However, due to the significant differences in the dissolution rates and densities of different components, traditional static mixing devices often suffer from low mixing efficiency, slow dissolution speed, and easy sedimentation and stratification during the mixing process, leading to unstable final fertilizer solution quality and affecting fertilization effectiveness.

[0003] Currently, most common static mixers use mechanical flow-disrupting elements such as spiral blades to enhance the mixing effect. Although this type of structure can improve the mixing efficiency to a certain extent, it is still difficult to achieve rapid and uniform mixing when dealing with liquid fertilizers with high viscosity or containing insoluble components. Therefore, a static mixer for liquid water-soluble fertilizers is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a static mixer for liquid water-soluble fertilizer, which has the advantages of high-efficiency mixing, controllable bubbles, anti-backflow and convenient operation, and solves the problems of low mixing efficiency, slow dissolution speed and easy sedimentation and stratification of traditional mixers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a static mixer for liquid water-soluble fertilizer, comprising a feeding pipe, a mixing pipe and a discharging pipe, wherein a foaming pipe is provided between the feeding pipe and the mixing pipe;

[0006] The mixing pipe includes a first pipe body and a mixing unit. The mixing unit is fixedly installed inside the first pipe body. The discharge pipe is fixedly installed at the end of the mixing pipe away from the feeding pipe. The discharge pipe includes a second pipe body, a discharge port, and a thermometer. The discharge port is fixedly installed on the lower end face of the second pipe body, and the thermometer is fixedly installed on the side end face of the second pipe body. The foaming pipe includes a venturi tube, an air inlet pipe, and a valve plate. The air inlet pipe is fixedly installed on the upper end face of the throat of the venturi tube and is connected to it. The valve plate is movably installed inside the air inlet pipe.

[0007] As a preferred embodiment of the static mixer for liquid water-soluble fertilizer of this utility model, a movably connected limiting plate is provided inside the air inlet pipe, a spring is provided at the upper end of the limiting plate, the valve plate and the limiting plate are elastically slidably connected by the spring, and a limiting flange that cooperates with the valve plate is provided on the inner end face of the side wall of the air inlet pipe.

[0008] As a preferred embodiment of the static mixer for liquid water-soluble fertilizer of this utility model, the upper end face of the limiting plate is provided with a lead screw, and the upper end face of the air inlet pipe is provided with a screw hole that mates with the lead screw.

[0009] As a preferred embodiment of the liquid water-soluble fertilizer static mixer of this utility model, the top of the lead screw is provided with a knob that is fixedly connected thereto.

[0010] As a preferred embodiment of the static mixer for liquid water-soluble fertilizer of this utility model, the top of the side end face of the air inlet pipe is provided with air inlet holes evenly distributed, and a dustproof net is provided on the inner side of the air inlet holes.

[0011] As a preferred embodiment of the static mixer for liquid water-soluble fertilizer of this utility model, a microporous foaming plate is provided at the end of the Venturi tube near the mixing tube.

[0012] As a preferred embodiment of the static mixer for liquid water-soluble fertilizer of this utility model, the upper and lower ends of the feeding pipe are respectively provided with a first feeding port and a second feeding port.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model incorporates a foaming tube between the feeding pipe and the mixing pipe. When the fertilizer solution flows at high speed through the throat of the Venturi tube, a negative pressure is generated, automatically drawing in air through the air inlet pipe. After the air enters, a gas-liquid mixture is formed. Under the shear force in the high-speed flow field, the mixture deforms and breaks into microbubbles. This process releases energy and triggers strong local turbulence. At the same time, a large number of microbubbles significantly increase the gas-liquid mass transfer interface area. The Marangoni effect generated during the rise of the bubbles further accelerates the diffusion and dissolution of the fertilizer. Finally, the addition of the microporous foaming plate causes the gas-liquid mixture to impact its surface, further shearing and refining the gas. The bubbles are adsorbed onto the surface of the fertilizer particles, effectively preventing particle sedimentation by utilizing the air flotation effect. This series of structures work together to solve the problems of relatively low mixing efficiency, slow dissolution speed, and easy sedimentation and stratification caused by traditional static mixers that rely solely on laminar shear or diversion and merging. This achieves efficient, rapid, and uniform mixing and dissolution of the fertilizer solution.

[0015] 2. This utility model incorporates a precise airflow control and anti-backflow structure within the air inlet pipe of the foaming tube. Under the reset action of the spring, the valve plate normally presses tightly against the limiting flange on the inner wall of the air inlet pipe. This structure allows external air to push the valve plate open from top to bottom and enter the pipe under the negative pressure of the venturi throat. However, when the equipment tilts or the internal pressure is abnormal, the valve plate will be firmly closed under the pressure of the spring, effectively preventing fertilizer liquid from backflowing and leaking out through the air inlet pipe, ensuring operational safety and equipment cleanliness. By rotating the knob at the top of the screw, the height of the limiting plate can be adjusted, thereby changing the pre-compression force of the spring on the valve plate. This structure allows users to conveniently and tool-free precisely adjust the air intake, thereby controlling the amount of bubbles generated in the fertilizer liquid. This solves the problems of poor mixing effect due to insufficient bubbles and potential air resistance or foam overflow due to excessive bubbles, affecting mixing stability and discharge. It achieves flexible and precise control of bubble generation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a cross-sectional view of the foaming tube of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Feeding pipe; 101. First feeding port; 102. Second feeding port; 2. Mixing pipe; 201. First pipe body; 202. Mixing unit; 3. Discharge pipe; 301. Second pipe body; 302. Discharge port; 303. Thermometer; 4. Foaming pipe; 401. Venturi tube; 402. Air inlet pipe; 4021. Air inlet hole; 4022. Limiting flange; 4023. Dustproof net; 4024. Screw hole; 403. Valve plate; 404. Lead screw; 4041. Limiting plate; 4042. Knob; 405. Spring; 406. Microporous foaming board. Detailed Implementation

[0021] Please see Figures 1-4 A static mixer for liquid water-soluble fertilizer includes a feeding pipe 1, a mixing pipe 2 and a discharging pipe 3, with a foaming pipe 4 provided between the feeding pipe 1 and the mixing pipe 2;

[0022] The mixing pipe 2 includes a first pipe body 201 and a mixing unit 202, which consists of alternating left-handed and right-handed blades. Efficient mixing is achieved through flow diversion and reverse rotation. The mixing unit 202 is fixedly installed inside the first pipe body 201. The discharge pipe 3 is fixedly installed at the end of the mixing pipe 2 away from the feeding pipe 1. The discharge pipe 3 includes a second pipe body 301, a discharge port 302, and a thermometer 303. The discharge port 302 is fixedly installed on the lower end face of the second pipe body 301, and the thermometer 303 is fixedly installed on the side end face of the second pipe body 301. The foaming pipe 4 includes a venturi tube 401, an air inlet pipe 402, and a valve plate 403. The air inlet pipe 402 is fixedly installed on the upper end face of the throat of the venturi tube 401 and is connected to it. The valve plate 403 is movably installed inside the air inlet pipe 402.

[0023] A foaming pipe 4 is installed between the feeding pipe 1 and the mixing pipe 2. When the fertilizer solution flows through the Venturi throat at high speed, it generates negative pressure and automatically draws in air through the air intake hole. Microbubbles are generated and deformed and broken by shear force in the flow field, releasing energy and triggering local turbulence. A gas-liquid interface is formed on the bubble surface, which increases the mass transfer area. The rising process of the bubbles generates the Marangoni effect, which accelerates the diffusion of solute and effectively improves the mixing effect.

[0024] Furthermore, a movably connected limiting plate 4041 is provided inside the intake pipe 402, and a spring 405 is provided at the upper end of the limiting plate 4041. The valve plate 403 and the limiting plate 4041 are elastically slidably connected through the spring 405. A limiting flange 4022 that cooperates with the valve plate 403 is provided on the inner end face of the side wall of the intake pipe 402.

[0025] Under the reset action of the spring 405, the valve plate 403 presses against the lower end face of the limiting flange 4022, so that the airflow can be squeezed from top to bottom into the venturi tube 401 and cannot flow in reverse, thus preventing the fertilizer in the foaming tube 4 from flowing back through the air inlet pipe 402 when the equipment is tilted.

[0026] Furthermore, a lead screw 404 is provided on the upper end face of the limiting plate 4041, and a screw hole 4024 that mates with the lead screw 404 is provided on the upper end face of the air intake pipe 402.

[0027] By rotating the lead screw 404, the height of the limit plate 4041 is adjusted, thereby adjusting the compression stroke of the spring 405 and controlling the pressure of the spring 405 on the valve plate 403, thus achieving the purpose of adjusting the air intake flow of the air intake pipe 402, controlling the bubble content in the fertilizer, and avoiding excessive bubbles from affecting the mixing.

[0028] Furthermore, a knob 4042 is fixedly connected to the top of the lead screw 404.

[0029] The knob 4042 allows for convenient and quick rotation of the lead screw 404 without the need for external tools, thus improving the ease of flow regulation of the intake pipe 402.

[0030] Furthermore, air inlets 4021 are evenly provided on the top of the side end face of the air inlet pipe 402, and a dustproof mesh 4023 is provided on the inner side of the air inlets 4021.

[0031] By installing a dustproof net 4023 inside the air inlet, dust and insects are prevented from being sucked into the mixer, which could cause blockages in the mixer over time and affect the mixing effect.

[0032] Furthermore, a microporous foaming plate 406 is provided at the end of the venturi tube 401 near the mixing tube 2.

[0033] When the gas-liquid mixture impacts the microporous foaming plate 406, the gas is sheared into microbubbles. These microbubbles are adsorbed onto the surface of the fertilizer particles, preventing sedimentation through the air flotation effect, promoting dissolution, and enhancing mass transfer.

[0034] Furthermore, the upper and lower ends of the feeding pipe 1 are respectively provided with a first feeding port 101 and a second feeding port 102.

[0035] The two sets of opposing first feed ports 101 and second feed ports 102 collide and form turbulence when the two solutions are initially mixed, thereby improving the mixing efficiency.

[0036] In use, this device first adjusts the height of the limiting plate 4041 by rotating the knob 4042 on the top of the lead screw 404 according to actual needs, thereby adjusting the compression stroke of the spring 405. This controls the pressure of the spring 405 on the valve plate 403, setting a suitable air intake flow rate in the air intake pipe 402 and controlling the bubble content in the fertilizer. Then, the liquid water-soluble fertilizer to be mixed is injected into the first feeding port 101 and the second feeding port 102 of the feeding pipe 1. The two solutions collide with each other during the initial mixing, forming turbulence and initially improving the mixing efficiency. The fertilizer solution then flows at high speed through the throat of the Venturi tube 401 of the foaming tube 4. At this time, the change in flow velocity generates negative pressure, and air is automatically drawn through the air intake hole 4021, which is equipped with a dustproof net 4023 on the top of the side wall of the air intake pipe 402. Upon intake, the valve plate 403 opens under the pressure of the spring 405, allowing air to enter the venturi tube 401 and form a gas-liquid mixture with the fertilizer solution. The gas-liquid mixture impacts the microporous foaming plate 406 near the mixing pipe 2 end of the venturi tube 401, shearing the gas into microbubbles. These bubbles adhere to the surface of the fertilizer particles, preventing sedimentation through the air flotation effect, promoting dissolution, and enhancing mass transfer. The fertilizer solution containing microbubbles then enters the mixing pipe 2, where it is further mixed under the action of the mixing unit 202. During the mixing process, the microbubbles deform and break under shear force in the flow field, releasing energy and triggering local turbulence. The rising process of the bubbles generates the Marangoni effect, accelerating solute diffusion and effectively improving the mixing effect. Finally, the well-mixed liquid water-soluble fertilizer is discharged from the discharge port 302 of the discharge pipe 3.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A static mixer for liquid water-soluble fertilizer, comprising a feeding pipe (1), a mixing pipe (2), and a discharging pipe (3), characterized in that: A foaming pipe (4) is provided between the feeding pipe (1) and the mixing pipe (2); The mixing pipe (2) includes a first pipe body (201) and a mixing unit (202). The mixing unit (202) is fixedly installed inside the first pipe body (201). The discharge pipe (3) is fixedly installed at the end of the mixing pipe (2) away from the feeding pipe (1). The discharge pipe (3) includes a second pipe body (301), a discharge port (302), and a thermometer (303). The discharge port (302) is fixedly installed on the lower end face of the second pipe body (301). The thermometer (303) is fixedly installed on the side end face of the second pipe body (301). The foaming pipe (4) includes a venturi tube (401), an air inlet pipe (402), and a valve plate (403). The air inlet pipe (402) is fixedly installed on the upper end face of the throat of the venturi tube (401) and is connected to it. The valve plate (403) is movably installed inside the air inlet pipe (402).

2. The static mixer for liquid water-soluble fertilizer as described in claim 1, characterized in that: The intake pipe (402) is provided with a movable limiting plate (4041), and a spring (405) is provided at the upper end of the limiting plate (4041). The valve plate (403) and the limiting plate (4041) are elastically slidably connected by the spring (405). The inner end face of the side wall of the intake pipe (402) is provided with a limiting flange (4022) that cooperates with the valve plate (403).

3. The static mixer for liquid water-soluble fertilizer as described in claim 2, characterized in that: The upper end face of the limiting plate (4041) is provided with a lead screw (404), and the upper end face of the air intake pipe (402) is provided with a screw hole (4024) that cooperates with the lead screw (404).

4. The static mixer for liquid water-soluble fertilizer as described in claim 3, characterized in that: The top of the lead screw (404) is provided with a knob (4042) that is fixedly connected to it.

5. A static mixer for liquid water-soluble fertilizer as described in claim 1, characterized in that: The top of the side end face of the air intake pipe (402) is uniformly provided with air intake holes (4021), and a dustproof net (4023) is provided on the inner side of the air intake hole (4021).

6. The static mixer for liquid water-soluble fertilizer as described in claim 1, characterized in that: A microporous foaming plate (406) is provided at the end of the venturi tube (401) near the mixing tube (2).

7. A static mixer for liquid water-soluble fertilizer as described in claim 1, characterized in that: The feeding pipe (1) is provided with a first feeding port (101) and a second feeding port (102) at its upper and lower ends, respectively.

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