Evaporation and concentration device for producing organic water-soluble fertilizer

Abstract

The utility model discloses an evaporation and concentration device for producing an organic water-soluble fertilizer, which comprises an evaporation and concentration bin, a plurality of heating pipes fixedly connected in the evaporation and concentration bin, a plurality of partition plates fixedly connected in the evaporation and concentration bin, and steam circulating mechanisms arranged at the top and the bottom of the evaporation and concentration bin, the concentrated solution treatment mechanisms are arranged at the top and the bottom of the heating pipe, and the ultrasonic cleaning mechanism is arranged in the evaporation concentration bin. The pre-concentrated liquid forms a film on the wall of the spiral heating pipe, so that the flowing stroke of the pre-concentrated liquid in the evaporation concentration bin is increased, the heat exchange efficiency is improved, heat of heating steam can be transferred to the pre-concentrated liquid in the heating pipe as much as possible, and the communication ports which are distributed in a left-right staggered manner are formed in the partition plate, so that the heat exchange efficiency is improved. The moving stroke of the heating steam in the evaporation concentration bin is increased, so that the contact time of the heating steam and the heating pipe is prolonged, the heating steam can fully concentrate and heat the heating pipe, and the utilization efficiency of the heating steam is improved.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer production technology, and in particular to an evaporation and concentration device for the production of organic water-soluble fertilizers. Background Technology

[0002] In the production of water-soluble fertilizers, evaporation and concentration are required to remove some of the solvent from the fertilizer solution, thereby increasing the proportion of solutes (i.e., nutrients, such as nitrogen, phosphorus, potassium, trace elements, amino acids, etc.) in the solution. This helps to achieve higher nutrient concentrations, creating conditions for subsequent processing (such as crystallization and drying), and making the fertilizer more in line with process requirements. However, the active ingredients (such as humic acid and amino acids) in organic water-soluble fertilizers are easily destroyed by high temperatures. Traditional evaporators have high operating temperatures (80-100℃), resulting in a product activity loss rate as high as 20%-30%. Therefore, the pre-concentrated liquid needs to be evenly distributed to the inner wall of vertical or inclined heating tubes through a distributor (such as a perforated plate or overflow weir). Under the action of gravity, a continuous liquid film is formed. Heating steam is introduced outside the tubes, and the steam outside the tubes heats the product, generating secondary steam through evaporation. The secondary steam from the first effect serves as the heat source for the second effect, recycling the heat energy and reducing steam consumption by more than 50%.

[0003] When existing evaporation and concentration devices use steam heating, the heat exchange efficiency is low, which affects the heat utilization rate.

[0004] A Chinese patent document with publication number CN219251659U discloses an evaporation and concentration device for water-soluble fertilizer production. This device includes a fixed platform, a steam recovery mechanism, and an evaporation and concentration tank, which is mounted in the middle of the fixed platform. In this device, through the coordinated use of a receiving tank, a scraper, a servo motor, and a threaded rod, when the device needs to output water-soluble fertilizer product from the receiving tank, the valve outside the receiving tank opens, and the water-soluble fertilizer product is discharged through the discharge port. During the discharge process, the servo motor drives the threaded rod to rotate via its drive shaft, which in turn pushes the scraper through the external thread of the threaded rod. This causes the scraper to push the water-soluble fertilizer product accumulated in the receiving tank out, reducing product residue and ensuring the product output effect of the evaporation and concentration device. However, this device uses high-temperature heating, and the active ingredients in the organic water-soluble fertilizer are easily destroyed by high temperatures, resulting in a loss of product activity.

[0005] To address the shortcomings of the existing technology, providing an evaporation and concentration device for the production of organic water-soluble fertilizers is a problem worthy of research. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing evaporation and concentration devices that use steam heating, which have low heat exchange efficiency and affect heat utilization. It provides an evaporation and concentration device for the production of organic water-soluble fertilizers, which achieves the technical effect of low-temperature, high-heat-exchange-rate evaporation and concentration.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] An evaporation and concentration device for producing organic water-soluble fertilizer includes an evaporation and concentration chamber, several heating pipes fixedly connected to the evaporation and concentration chamber, several partition plates fixedly connected to the evaporation and concentration chamber, a steam circulation mechanism set at the top and bottom of the evaporation and concentration chamber, a concentrate treatment mechanism set at the top and bottom of the heating pipes, and an ultrasonic cleaning mechanism set inside the evaporation and concentration chamber.

[0009] All heating tubes are spiral-shaped, and several of them are distributed in a ring at equal intervals inside the evaporation and concentration chamber, so that the pre-concentrated liquid and the heating steam can be in full contact, thereby improving the heat exchange efficiency.

[0010] The concentrate processing mechanism includes branch pipes connected to the top and bottom of the heating tube respectively. The bottom branch pipe is connected to the fertilizer concentrate recovery equipment, and the top branch pipe is connected to the pre-concentrated liquid storage equipment. The pre-concentrated liquid undergoes heat exchange evaporation and concentration in the heating tube, and then is collected from the bottom branch pipe and discharged into the concentrate recovery equipment to complete the evaporation and concentration processing of organic water-soluble fertilizer.

[0011] The partition plates are vertically and equidistantly distributed inside the evaporation and concentration chamber. Each side of the partition plate has a connecting port. The connecting ports on adjacent partition plates are staggered to increase the travel distance of the heating steam in the evaporation and concentration chamber, thereby increasing the contact time with the heating tube and enabling the heating steam to fully concentrate and heat the heating tube, thus improving the utilization efficiency of the heating steam.

[0012] The steam circulation mechanism includes a steam filling pipe fixedly connected to the bottom of the evaporation and concentration chamber, and a steam discharge pipe fixedly connected to the top of the evaporation and concentration chamber. The steam filling pipe is connected to the steam generating equipment, and both the steam filling pipe and the steam discharge pipe are connected to the evaporation and concentration chamber.

[0013] The ultrasonic cleaning mechanism includes a through slot opened on the partition plate, a lifting column fixedly connected to the center of the evaporation and concentration chamber, electric slide rails set on both sides of the lifting column, a lifting plate fixedly connected to the outside of the lifting column, and several ultrasonic transducers fixedly connected to the outside of the lifting plate.

[0014] The shape of the through groove is adapted to the combined shape of the lifting plate and the ultrasonic transducer. The ultrasonic transducer uses the cavitation effect to destroy the scale nuclei on the inner wall of the heating tube, preventing organic matter (such as sugars and colloids) from adhering to the inner wall of the heating tube.

[0015] The ultrasonic transducers are arranged in a ring on the outside of the lifting plate, with the ultrasonic generating end of the ultrasonic transducer facing the inside of the heating tube, and the ultrasonic frequency of the ultrasonic transducer is 20-40kHz.

[0016] Positive and beneficial effects:

[0017] 1. In this evaporation and concentration device for producing organic water-soluble fertilizer, the pre-concentrated liquid forms a thin film on the wall of the spiral heating tube, which increases the flow path of the pre-concentrated liquid inside the evaporation and concentration chamber, thereby enabling the pre-concentrated liquid to fully contact the heating steam, improving the heat exchange efficiency, and allowing as much heat as possible to be transferred from the heating steam to the pre-concentrated liquid inside the heating tube, thus achieving full evaporation and concentration of the organic water-soluble fertilizer.

[0018] 2. The evaporation and concentration device for producing organic water-soluble fertilizer has staggered connecting ports on the partition plate, which increases the travel distance of the heating steam in the evaporation and concentration chamber, thereby increasing the contact time with the heating tubes. This allows the heating steam to fully concentrate and heat the heating tubes, improving the utilization efficiency of the heating steam.

[0019] 3. The evaporation and concentration device for producing organic water-soluble fertilizer uses an ultrasonic transducer to destroy the scale nuclei on the inner wall of the heating tube by utilizing the cavitation effect, preventing organic matter (such as sugars and colloids) from adhering to the inner wall of the heating tube. During the process, the ultrasonic transducer continuously adjusts its height to achieve efficient descaling treatment of the inner wall of the heating tube. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0023] Figure 4 This is a schematic diagram of the structure of the present invention without its outer casing;

[0024] Figure 5 This is a bottom view of the structure of the present invention without its outer casing.

[0025] Figure 6 This is a cross-sectional structural diagram of the present invention without its outer casing.

[0026] Figure 7 This utility model Figure 6 Enlarged structural diagram at point B;

[0027] Figure 8 This is a schematic diagram of the ultrasonic transducer of this utility model.

[0028] In the diagram: 1-Evaporation and concentration chamber, 2-Heating tube, 3-Divider plate, 4-Branch pipe, 5-Steam filling pipe, 6-Steam exhaust pipe, 7-Through trough, 8-Lifting column, 9-Electric slide rail, 10-Lifting plate, 11-Ultrasonic transducer, 12-Connecting port. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] Example 1

[0031] like Figures 1 to 8 As shown, an evaporation and concentration device for producing organic water-soluble fertilizer includes an evaporation and concentration chamber 1, several heating pipes 2 fixedly connected to the evaporation and concentration chamber 1, several partition plates 3 fixedly connected to the evaporation and concentration chamber 1, a steam circulation mechanism set at the top and bottom of the evaporation and concentration chamber 1, a concentrate treatment mechanism set at the top and bottom of the heating pipes 2, and an ultrasonic cleaning mechanism set inside the evaporation and concentration chamber 1.

[0032] like Figures 2 to 7 As shown, the heating tubes 2 are all spiral-shaped, and several heating tubes 2 are distributed in a ring at equal intervals inside the evaporation and concentration chamber 1. By setting several spiral heating tubes 2 inside the evaporation and concentration chamber 1, a thin film is formed on the wall of the spiral heating tubes, which increases the flow path of the pre-concentrated liquid inside the evaporation and concentration chamber 1, so that the pre-concentrated liquid can fully contact the heating steam, improve the heat exchange efficiency, and allow as much heat as possible to be transferred to the pre-concentrated liquid inside the heating tubes 2, thereby realizing the full evaporation and concentration processing of organic aqueous fertilizer.

[0033] like Figures 1 to 6As shown, the concentrate treatment mechanism includes branch pipes 4 that are connected to the top and bottom of the heating pipe 2 respectively. The bottom branch pipe 4 is connected to the fertilizer concentrate recovery equipment, and the top branch pipe 4 is connected to the pre-concentrated liquid storage equipment. By setting branch pipes 4 at the top and bottom of the heating pipe 2, it can be uniformly connected to the pre-concentrated liquid storage equipment, so that it can provide the heating pipe 2 with a continuous supply of pre-concentrated liquid. The pre-concentrated liquid is then heat-exchanged, evaporated, and concentrated in the heating pipe 2, and then discharged from the bottom branch pipe 4 into the concentrate recovery equipment to complete the evaporation and concentration processing of organic water-soluble fertilizer.

[0034] Furthermore, the branch pipe 4 above the heating tube 2 is replaced with a porous disc, which continuously supplies pre-concentrated liquid to the heating tube 2. The porous disc enables the pre-concentrated liquid to adhere to the inner wall of the heating tube 2 to form a thin film, thereby accelerating the heat exchange efficiency between the pre-concentrated liquid and the heating steam and optimizing the concentration effect.

[0035] Furthermore, an exhaust port with a one-way valve is provided on one side of the upper branch pipe 4 so that the steam generated during the evaporation and concentration process of the pre-concentrated liquid can be discharged in a timely manner, while the one-way valve can prevent the pre-concentrated liquid from leaking and causing losses.

[0036] Example 2

[0037] like Figures 4 to 5 As shown, the partition plates 3 are vertically and equidistantly distributed inside the evaporation and concentration chamber 1. Each side of the partition plate 3 has a connecting port 12. The connecting ports 12 on adjacent partition plates 3 are staggered. By setting the connecting ports 12 that are staggered on the partition plates 3, the movement of the heating steam in the evaporation and concentration chamber 1 is increased, thereby increasing the contact time with the heating tube 2. This allows the heating steam to fully concentrate and heat the heating tube 2, improving the utilization efficiency of the heating steam.

[0038] like Figures 1 to 7 As shown, the steam circulation mechanism includes a steam filling pipe 5 fixedly connected to the bottom of the evaporation and concentration chamber 1, and a steam discharge pipe 6 fixedly connected to the top of the evaporation and concentration chamber 1. The steam filling pipe 5 is connected to the steam generating equipment, and both the steam filling pipe 5 and the steam discharge pipe 6 are connected to the evaporation and concentration chamber 1. By setting the steam filling pipe 5 and the steam discharge pipe 6 on the evaporation and concentration chamber 1, heating steam is continuously supplied to the evaporation and concentration chamber 1, so that the pre-concentrated liquid in the heating pipe can be heated and concentrated. At the same time, a steam recovery device is set at the end of the steam discharge pipe 6 to recover and reuse the discharged steam, or a purification device is set at the end of the steam discharge pipe 6 to purify the discharged steam before it is discharged into the atmosphere.

[0039] Example 3

[0040] like Figures 2 to 8As shown, the ultrasonic cleaning mechanism includes a through groove 7 opened on the partition plate 3, a lifting column 8 fixedly connected to the center of the evaporation and concentration chamber 1, electric slide rails 9 set on both sides of the lifting column 8, a lifting plate 10 fixedly connected to the outside of the lifting column 8, and several ultrasonic transducers 11 fixedly connected to the outside of the lifting plate 10.

[0041] like Figures 2 to 7 As shown, the shape of the through groove 7 is adapted to the combined shape of the lifting plate 10 and the ultrasonic transducer 11. By opening the through groove 7 on the partition plate 3, the lifting plate 10 and the ultrasonic transducer 11 can adjust their height along the lifting column 8. The ultrasonic transducer 11 uses the cavitation effect to destroy the scale crystal nuclei on the inner wall of the heating tube, preventing organic matter (such as sugars and colloids) from adhering to the inner wall of the heating tube. During the process, the ultrasonic transducer 11 continuously adjusts its height to achieve efficient descaling treatment of the inner wall of the heating tube 2.

[0042] Furthermore, the ultrasonic transducer 11 adopts a high-temperature resistant and waterproof shell, which enables it to maintain normal operation for a long time in a high-temperature steam environment.

[0043] like Figures 2 to 8 As shown, the ultrasonic transducers 11 are arranged in a ring on the outside of the lifting plate 10, and the ultrasonic generating end of the ultrasonic transducers 11 faces the inside of the heating tube 2. The ultrasonic frequency of the ultrasonic transducers 11 is 20 to 40 kHz.

[0044] The working principle of this utility model is as follows:

[0045] S1. The pre-concentrated liquid forms a thin film on the spiral heating tube wall, increasing the flow path of the pre-concentrated liquid inside the evaporation and concentration chamber 1, thereby allowing the pre-concentrated liquid to fully contact the heating steam, improving the heat exchange efficiency, and enabling the heat of the heating steam to be transferred to the pre-concentrated liquid in the heating tube 2 as much as possible, thus achieving full evaporation and concentration processing of organic aqueous fertilizer.

[0046] S2, heating tube 2 is connected to the pre-concentrated liquid storage equipment, so that it provides a continuous supply of pre-concentrated liquid to heating tube 2, so that the pre-concentrated liquid undergoes heat exchange, evaporation and concentration in heating tube 2, and then is discharged from the branch pipe 4 below into the concentrate recovery equipment to complete the evaporation and concentration processing of organic water-soluble fertilizer.

[0047] S3. The ultrasonic transducer 11 uses the cavitation effect to destroy the scale crystal nuclei on the inner wall of the heating tube, preventing organic matter (such as sugars and colloids) from adhering to the inner wall of the heating tube. During the process, the ultrasonic transducer 11 continuously adjusts its height to achieve efficient descaling treatment of the inner wall of the heating tube 2.

[0048] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. An evaporation and concentration device for producing organic water-soluble fertilizer, comprising an evaporation and concentration chamber (1), characterized in that: It also includes several heating tubes (2) fixedly connected to the evaporation and concentration chamber (1), several partition plates (3) fixedly connected to the evaporation and concentration chamber (1), a steam circulation mechanism set at the top and bottom of the evaporation and concentration chamber (1), a concentrate treatment mechanism set at the top and bottom of the heating tubes (2), and an ultrasonic cleaning mechanism set inside the evaporation and concentration chamber (1).

2. The evaporation and concentration device for producing organic water-soluble fertilizer according to claim 1, characterized in that: The heating tubes (2) are all spiral-shaped, and several of the heating tubes (2) are distributed in a ring at equal intervals inside the evaporation and concentration chamber (1).

3. The evaporation and concentration device for producing organic water-soluble fertilizer according to claim 1, characterized in that: The concentrate processing mechanism includes branch pipes (4) that are respectively connected to the top and bottom of the heating pipe (2). The bottom branch pipe (4) is connected to the fertilizer concentrate recovery device, and the top branch pipe (4) is connected to the pre-concentrated liquid storage device.

4. The evaporation and concentration device for producing organic water-soluble fertilizer according to claim 1, characterized in that: The partition plates (3) are vertically and equidistantly distributed inside the evaporation and concentration chamber (1). Each side of the partition plate (3) has a connecting port (12). The connecting ports (12) on adjacent partition plates (3) are staggered.

5. The evaporation and concentration device for producing organic water-soluble fertilizer according to claim 1, characterized in that: The steam circulation mechanism includes a steam filling pipe (5) fixedly connected to the bottom of the evaporation and concentration chamber (1) and a steam discharge pipe (6) fixedly connected to the top of the evaporation and concentration chamber (1). The steam filling pipe (5) is connected to the steam generating equipment, and both the steam filling pipe (5) and the steam discharge pipe (6) are connected to the evaporation and concentration chamber (1).

6. The evaporation and concentration device for producing organic water-soluble fertilizer according to claim 1, characterized in that: The ultrasonic cleaning mechanism includes a through slot (7) opened on the partition plate (3), a lifting column (8) fixedly connected to the center of the evaporation and concentration chamber (1), electric slide rails (9) set on both sides of the lifting column (8), a lifting plate (10) fixedly connected to the outside of the lifting column (8), and several ultrasonic transducers (11) fixedly connected to the outside of the lifting plate (10).

7. The evaporation and concentration device for producing organic water-soluble fertilizer according to claim 6, characterized in that: The shape of the through slot (7) is adapted to the combined shape of the lifting plate (10) and the ultrasonic transducer (11).

8. The evaporation and concentration device for producing organic water-soluble fertilizer according to claim 7, characterized in that: The ultrasonic transducers (11) are arranged in a ring on the outside of the lifting plate (10). The ultrasonic generating end of the ultrasonic transducers (11) faces the inside of the heating tube (2). The ultrasonic frequency of the ultrasonic transducers (11) is 20 to 40 kHz.

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