A cadmium-increasing selenium conditioning agent chelating device

Abstract

The utility model discloses a kind of cadmium-inhibiting selenium-increasing conditioner chelation devices, it is related to chelation equipment technical field, the cadmium-inhibiting selenium-increasing conditioner chelation device includes: mixed cylinder subassembly, including first cylinder body and first stirring shaft, first stirring shaft is set to the inside of first cylinder body;Reaction cylinder subassembly, including second cylinder body, heating assembly and second stirring shaft;Stable cylinder subassembly, including third cylinder body, cooling unit, cooling unit is set to the bottom of third cylinder body;Blending bin subassembly, including bin body and third stirring subassembly, bin body is connected with second cylinder body, and third stirring subassembly is rotatably connected with bin body.The utility model is sequentially connected by mixed cylinder subassembly, reaction cylinder subassembly, stable cylinder subassembly and blending bin subassembly, in device, additional blending area of selenium source and cadmium adsorption material, by chelation reaction fixed cadmium ion, simultaneously release active selenium element, satisfy cadmium-inhibiting selenium-increasing, while realizing that cadmium-inhibiting selenium-increasing conditioner has stable product quality of product.

Description

Technical Field

[0001] This utility model relates to the field of chelation equipment technology, and in particular to a chelation device for cadmium-inhibiting and selenium-enhancing conditioners. Background Technology

[0002] Cadmium-inhibiting and selenium-enhancing conditioners are functional formulations used to reduce cadmium content in soil or crops while increasing selenium content. They fix cadmium ions and release active selenium through chemical chelation, adsorption, or antagonism, thereby reducing the risk of cadmium transmission through the food chain and enhancing the nutritional value and safety of agricultural products. These conditioners require chelation preparation using a chelation device.

[0003] Existing chelation devices mostly adopt a single reaction chamber structure, which promotes the chelation reaction through stirring and heating. Although they can achieve basic mixing functions, they still have significant drawbacks, such as difficulty in controlling key parameters such as temperature and pH value in stages, making it difficult to achieve cadmium inhibition and selenium enhancement. Furthermore, integrated reactors are prone to problems such as material sticking to the walls and uneven mixing, and they still need to rely on manual inspection, which can easily lead to raw material waste and product quality fluctuations.

[0004] Therefore, there is a need for a chelation device that can improve the chelation effect of cadmium-inhibiting and selenium-enriching conditioners. Utility Model Content

[0005] The main purpose of this invention is to provide a chelating device for cadmium-inhibiting and selenium-enhancing conditioners, which aims to solve the problems that existing chelating devices are difficult to achieve cadmium-inhibiting and selenium-enhancing during chelation and are prone to causing raw material waste and product quality fluctuations.

[0006] To achieve the above objectives, the present invention proposes a chelating device for cadmium-inhibiting and selenium-enhancing conditioners, comprising:

[0007] A mixing cylinder assembly, the mixing cylinder assembly including a first cylinder body and a first stirring shaft, the first stirring shaft being disposed inside the first cylinder body and rotatably connected to the first cylinder body;

[0008] A reaction cylinder assembly, comprising a second cylinder, a heating assembly, and a second stirring shaft, wherein one end of the second cylinder is connected to the first cylinder, the second stirring shaft is rotatably connected to the second cylinder, and the heating assembly is disposed within the second cylinder and spaced apart from the second stirring shaft;

[0009] A stabilizing cylinder assembly, one end of which is connected to the reaction cylinder, the stabilizing cylinder assembly including a third cylinder and a cooling unit, the third cylinder being connected to the second cylinder, and the cooling unit being disposed at the bottom of the third cylinder;

[0010] A blending chamber assembly, comprising a chamber body and a third stirring assembly, wherein the chamber body is connected to a second cylindrical body and the third stirring assembly is rotatably connected to the chamber body;

[0011] The mixing cylinder assembly, the reaction cylinder assembly, and the stabilizing cylinder assembly are connected in sequence.

[0012] Preferably, the blending chamber assembly further includes a spraying device, which includes a selenium source pipe and a nozzle. The selenium source pipe is disposed on one side of the chamber body and at least one end of the selenium source pipe passes through the chamber body. The nozzle is disposed at the top of the interior of the chamber body and the opening direction of the nozzle is vertically downward. The nozzle is connected to the selenium source pipe.

[0013] Preferably, the silo further includes a feed inlet and a feed screen. The feed inlet is located at the top of the silo, and the interior of the silo is connected to the first cylinder through the feed inlet. The feed screen is located at one end of the feed inlet near the silo, and the feed screen is detachably connected to the feed inlet.

[0014] Preferably, the blending chamber assembly further includes a pneumatic valve and a connecting pipe, one end of the connecting pipe being connected to the chamber body and the other end being connected to the second cylinder body, and the pneumatic valve being disposed on the connecting pipe.

[0015] Preferably, the heating assembly includes a heating jacket and temperature sensors. The heating jacket is arranged along the circumference of the second cylinder. There are multiple temperature sensors, which are evenly spaced inside the second cylinder and are all connected to the heating jacket.

[0016] Preferably, the stabilizing cylinder assembly further includes a discharge pipe, a flow sensor, and a discharge valve. The discharge pipe is disposed at the bottom of the third cylinder and spaced apart from the cooling unit. The flow sensor is disposed on the discharge pipe at one end near the third cylinder and is signal-connected to the discharge valve. The discharge valve is disposed on the discharge pipe at one end away from the third cylinder.

[0017] Preferably, the stabilizing cylinder assembly further includes a stabilizing screen, which is disposed inside the third cylinder and spaced apart from the cooling unit.

[0018] This invention utilizes a mixing cylinder assembly, a reaction cylinder assembly, a stabilizing cylinder assembly, and a blending chamber assembly connected in sequence. Through these sequentially connected individual mixing chambers, each chamber can independently control production parameters such as temperature and stirring speed. Furthermore, a blending zone for selenium source and cadmium adsorbent material is added to the device. Cadmium ions are fixed through a chelation reaction, while active selenium elements are released, thus achieving stable product quality of conditioner while simultaneously inhibiting cadmium and increasing selenium. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the chelating device for cadmium-inhibiting and selenium-enhancing conditioners according to an embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional structural schematic diagram of a blending chamber assembly according to an embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional structural schematic diagram of a reaction cylinder assembly according to an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional structural diagram of a stabilizing cylinder assembly according to an embodiment of the present invention.

[0024] Explanation of icon numbers:

[0025]

[0026]

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that all directional indicators in this embodiment are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0031] This utility model proposes a chelating device 1000 for a cadmium-inhibiting and selenium-enriching conditioner, comprising: a mixing cylinder assembly 100, which includes a first cylinder 110 and a first stirring shaft 120, the first stirring shaft 120 being disposed inside the first cylinder 110 and rotatably connected to the first cylinder 110; and a reaction cylinder assembly 200, which includes a second cylinder 210, a heating assembly 220, and a second stirring shaft 230, one end of the second cylinder 210 being connected to the first cylinder 110, the second stirring shaft 230 being rotatably connected to the second cylinder 210, and the heating assembly 220 being disposed in the second cylinder 210. The mixing cylinder assembly 100, the reaction cylinder assembly 200, and the stabilizing cylinder assembly 300 are arranged at intervals between the mixing cylinder assembly 100 and the second stirring shaft 230; the stabilizing cylinder assembly 300 is connected at one end to the reaction cylinder, and includes a third cylinder 310 and a cooling unit 320. The third cylinder 310 is connected to the second cylinder 210, and the cooling unit 320 is disposed at the bottom of the third cylinder 310; the mixing chamber assembly 400 includes a chamber body 410 and a third stirring assembly. The chamber body 410 is connected to the second cylinder 210, and the third stirring assembly is rotatably connected to the chamber body 410; wherein, the mixing cylinder assembly 100, the reaction cylinder assembly 200, and the stabilizing cylinder assembly 300 are connected in sequence.

[0032] The cadmium adsorbent involved in this invention is one of a cadmium inhibitor (cadmium metal scavenger), mercapto-modified zeolite, or nano-hydroxyapatite. The selenium source can be one of sodium selenite or nano-selenium particles. The cadmium ion fixation rate refers to the efficiency of the conditioner in adsorbing, chelating, or chemically transforming free cadmium ions in the soil, converting biotoxic and migratory cadmium ions in the soil into a stable form. This invention obtains a cadmium-inhibiting and selenium-enriching conditioner by chelating the cadmium adsorbent, selenium source, and chelating agent (the chelating agent can be at least one of humic acid and EDTA, including but not limited to). This cadmium-inhibiting and selenium-enriching conditioner is commonly used in soil remediation and other fields.

[0033] In this embodiment, as Figures 1 to 4 As shown, the first cylinder 110 is equipped with a multi-channel feed inlet 411 to separate the liquid and solid materials, avoid cross-contamination, and perform preliminary mixing. After passing through the first cylinder 110, the operator can choose to let the material first enter the mixing chamber and then pass it into the second cylinder 210 for chelation, or directly enter the second cylinder 210 for chelation under heating conditions. After the reaction in the second cylinder, the material enters the third cylinder 310. The material in the third cylinder 310 can be quickly cooled by the cooling coil to prevent the components from decomposing or the selenium from volatilizing due to high temperature.

[0034] In detail, the first stirring shaft 120 is a propeller-type stirring shaft, which ensures that the materials required for the preparation of the cadmium-inhibiting and selenium-enriching conditioner are uniformly dispersed, avoiding material agglomeration or stratification, and initially activating the chelating agent through mechanical stirring for preliminary mixing of materials. The third stirring shaft 420 is a composite stirring element composed of a paddle-type stirring component and a wall-scraping stirring component, which further mixes the selenium source and cadmium adsorbent material, promoting the reaction of the selenium source, cadmium adsorbent material and chelating agent to obtain a pre-product of the cadmium-inhibiting and selenium-enriching conditioner. The second stirring shaft 230 is a paddle-type stirring shaft combined with a heating component 220, which further promotes the chelation of the chelating agent with the cadmium adsorbent material and the selenium source under temperature control, to obtain the cadmium-inhibiting and selenium-enriching conditioner product.

[0035] More specifically, the inner walls of each stage of the cylinder are equipped with removable polytetrafluoroethylene (PTFE) liners. The surface of the liner can have honeycomb-shaped grooves; this groove design increases material turbulence to enhance mixing. It is understood that this invention, through its modular cavity design, facilitates segmented maintenance and process adjustments, solving the problems of difficult cleaning and uneven temperature control inherent in traditional integrated reactors. In this embodiment, the cylinders are connected via quick-connect flanges, each embedded with a sealing ring to prevent leakage.

[0036] In one embodiment, the blending chamber assembly 400 further includes a spraying device 430, which includes a selenium source pipe 431 and a nozzle 432. The selenium source pipe 431 is disposed on one side of the chamber body 410 and at least one end of the selenium source pipe 431 passes through the chamber body 410. The nozzle 432 is disposed at the top inside the chamber body 410 and the opening direction of the nozzle 432 is vertically downward. The nozzle 432 is connected to the selenium source pipe 431.

[0037] In this embodiment, one end of the selenium source pipe 431 is horizontally inserted into the chamber 410, and the nozzle 432 is located at the top of the chamber 410 and spaced apart from the third stirring shaft 420. The operator can pump the selenium source through the selenium source pipe 431 to the nozzle 432 using a liquid pump. The nozzle 432 then sprays the selenium source onto the material premixed in the first cylinder 110, achieving precise control and preventing material loss. It is understood that the selenium source pipe 431 can also be replaced with other external liquid sources, such as chelating agents or pH additives, as needed.

[0038] In one embodiment, the silo body 410 further includes a feed inlet 411 and a feed screen 412. The feed inlet 411 is located at the top of the silo body 410, and the interior of the silo body 410 is connected to the first cylinder 110 through the feed inlet 411. The feed screen 412 is located on the feed inlet 411 near one end of the silo body 410, and the feed screen 412 is detachably connected to the feed inlet 411.

[0039] In this embodiment, the material entering the silo 410 is screened by the feed screen 412. The operator can pre-mix the material in the mixing drum assembly 100 and then add supplementary material through the feed inlet 411, which is then fed into the silo 410. The feed screen 412 is detachably connected to the top of the silo 410. The operator can adjust the mesh size of the feed screen 412 to screen different solid materials. In another embodiment, a vibration motor connected to the feed screen 412 can be added. The vibration motor is located on the outer wall of the silo 410 and at least one end is connected to the feed screen 412. When the operator starts the motor, it can drive the feed screen 412 to vibrate, improving the screening capacity.

[0040] In one embodiment, the blending chamber assembly 400 further includes a pneumatic valve 440 and a connecting pipe 450. One end of the connecting pipe 450 is connected to the chamber body 410, and the other end of the connecting pipe 450 is connected to the second cylinder 210. The pneumatic valve 440 is disposed on the connecting pipe 450.

[0041] In this embodiment, the connecting pipe 450 is horizontally disposed between the silo 410 and the second cylinder 210 to connect the silo 410 and the second cylinder 210. A gas valve is disposed on the connecting pipe 450 near the end of the silo 410 to control the rate at which the material in the silo 410 flows to the second cylinder 210.

[0042] In one embodiment, the heating assembly 220 includes a heating jacket 221 and temperature sensors 222. The heating jacket 221 is arranged along the circumference of the second cylinder 210. There are multiple temperature sensors 222, which are evenly spaced inside the second cylinder 210 and are all connected to the heating jacket 221.

[0043] In this embodiment, there are two temperature sensors 222, which are spaced apart on the inner side of the second cylinder 210. Both temperature sensors 222 are connected to the heating jacket 221. It is understood that this utility model also includes a PIC controller, which is connected to the temperature sensors 222 and the heating jacket 221. By receiving the temperature signal emitted by the temperature sensor 222, the PIC controller converts it into a temperature control signal for the heating jacket 221, thereby achieving accurate temperature rise inside the second cylinder 210, ensuring uniform temperature inside the second cylinder 210, and improving the product quality of the cadmium-inhibiting selenium-enriched conditioner.

[0044] In one embodiment, the stabilizing cylinder assembly 300 further includes a discharge pipe 330, a flow sensor 340, and a discharge valve 350. The discharge pipe 330 is disposed at the bottom of the third cylinder 310 and spaced apart from the cooling unit 320. The flow sensor 340 is disposed on the discharge pipe 330 near the third cylinder 310 and is signal-connected to the discharge valve 350. The discharge valve 350 is disposed on the discharge pipe 330 away from the third cylinder 310.

[0045] In this embodiment, the flow sensor 340 is signal-connected to the discharge valve 350. The discharge valve 350 is located on the discharge pipe 330 at one end away from the third cylinder 310. The discharge valve 350 is used to control the discharge of the cadmium-inhibiting selenium-enriching conditioner. The discharge pipe 330 is located at the bottom of the third cylinder 310 and spaced apart from the cooling unit 320, and discharges the rapidly cooled cadmium-inhibiting selenium-enriching conditioner.

[0046] In one embodiment, the stabilizing cylinder assembly 300 further includes a stabilizing screen 360 disposed inside the third cylinder 310, with the stabilizing screen 360 and the cooling unit 320 spaced apart.

[0047] In this embodiment, a stabilizing screen 360 is disposed at the top of the third cylinder 310 to filter unreacted solid products flowing out of the second cylinder 210. A cooling unit 320 is disposed at the bottom of the third cylinder 310, and the material is cooled vertically downward through the cooling unit 320 after screening.

[0048] This invention employs a multi-stage structural design comprising a mixing cylinder assembly, a reaction cylinder assembly, a blending chamber, and a stabilizing cylinder assembly. This design achieves a segmented temperature gradient control from room temperature to heated temperature and back to room temperature, improving reaction efficiency and ensuring product stability. Furthermore, the multi-stage design allows for control of feed ratio errors, avoiding human error and facilitating resource recycling. The invention also incorporates a blending zone for a selenium source and cadmium adsorbent material. This chelation reaction fixes cadmium ions and releases active selenium, achieving both cadmium inhibition and selenium enhancement while maintaining stable product quality.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A chelating device for cadmium-inhibiting and selenium-enhancing conditioners, characterized in that, include: A mixing cylinder assembly, the mixing cylinder assembly including a first cylinder body and a first stirring shaft, the first stirring shaft being disposed inside the first cylinder body and rotatably connected to the first cylinder body; A reaction cylinder assembly, comprising a second cylinder, a heating assembly, and a second stirring shaft, wherein one end of the second cylinder is connected to the first cylinder, the second stirring shaft is rotatably connected to the second cylinder, and the heating assembly is disposed within the second cylinder and spaced apart from the second stirring shaft; A stabilizing cylinder assembly, one end of which is connected to the reaction cylinder, the stabilizing cylinder assembly including a third cylinder and a cooling unit, the third cylinder being connected to the second cylinder, and the cooling unit being disposed at the bottom of the third cylinder; A blending chamber assembly is connected to the reaction cylinder assembly. The blending chamber assembly includes a chamber body and a third stirring assembly. The chamber body is connected to the second cylinder body, and the third stirring assembly is rotatably connected to the chamber body. The mixing cylinder assembly, the reaction cylinder assembly, and the stabilizing cylinder assembly are connected in sequence.

2. The chelating device for cadmium-inhibiting and selenium-enriching conditioners as described in claim 1, characterized in that, The blending chamber assembly also includes a spraying device, which includes a selenium source pipe and a nozzle. The selenium source pipe is disposed on one side of the chamber body and at least one end of the selenium source pipe passes through the chamber body. The nozzle is disposed at the top of the interior of the chamber body and the opening direction of the nozzle is vertically downward. The nozzle is connected to the selenium source pipe.

3. The chelating device for cadmium-inhibiting and selenium-enriching conditioners as described in claim 2, characterized in that, The silo also includes a feed inlet and a feed screen. The feed inlet is located at the top of the silo, and the interior of the silo is connected to the first cylinder through the feed inlet. The feed screen is located at one end of the feed inlet near the silo, and the feed screen is detachably connected to the feed inlet.

4. The chelating device for cadmium-inhibiting and selenium-enriching conditioners as described in claim 3, characterized in that, The blending chamber assembly also includes a pneumatic valve and a connecting pipe. One end of the connecting pipe is connected to the chamber body, and the other end of the connecting pipe is connected to the second cylinder body. The pneumatic valve is located on the connecting pipe.

5. The chelating device for cadmium-inhibiting and selenium-enriching conditioners as described in claim 1, characterized in that, The heating assembly includes a heating jacket and temperature sensors. The heating jacket is arranged along the circumference of the second cylinder. There are multiple temperature sensors, which are evenly spaced inside the second cylinder and are all connected to the heating jacket.

6. The chelating device for cadmium-inhibiting and selenium-enriching conditioners as described in claim 1, characterized in that, The stabilizing cylinder assembly also includes a discharge pipe, a flow sensor, and a discharge valve. The discharge pipe is located at the bottom of the third cylinder and is spaced apart from the cooling unit. The flow sensor is located on the discharge pipe at one end near the third cylinder and is signal-connected to the discharge valve. The discharge valve is located on the discharge pipe at one end away from the third cylinder.

7. The chelating device for cadmium-inhibiting and selenium-enriching conditioners as described in claim 6, characterized in that, The stabilizing cylinder assembly also includes a stabilizing screen, which is disposed inside the third cylinder and spaced apart from the cooling unit.

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