An integrated processing device for microbial mineralization of modified rubber particles

Abstract

The utility model discloses a kind of integrated processing device of microorganism mineralization modified rubber particles, it is related to microorganism mineralization technology and solid waste resource utilization technical field.The main body reaction tank is provided with feed unit, modified reaction unit, discharge unit and monitoring unit on the main body reaction tank;Feed unit includes rubber particle feed inlet and liquid feed inlet, liquid feed inlet is connected with liquid inlet pipe, liquid inlet valve and liquid inlet pump are set on liquid inlet pipe, liquid inlet pipe is used for external connection bacteria liquid container, mineralization liquid container or water container;Modified reaction unit includes stirring arm and motor;Discharge unit includes filter screen, bottom cover, liquid discharge port, liquid discharge valve, liquid discharge pump and liquid collector;Monitoring unit includes thermometer and timer.The utility model integrates pretreatment, reaction, monitoring in a set of device, realizes the continuous processing from raw material to modified finished product, greatly improves modified efficiency, reduces manual intervention and site occupation.

Description

Technical Field

[0001] This utility model relates to the fields of microbial mineralization technology and solid waste resource utilization technology, and in particular to an integrated treatment device for microbial mineralization modified rubber particles. Background Technology

[0002] Rubber concrete is a new type of concrete material with excellent performance, with good energy absorption, sound insulation and heat insulation, and has great application potential in many fields. However, when rubber particles are added to concrete, the concrete strength decreases due to poor adhesion and poor hydrophilicity at the interface with the cement matrix. Microbial mineralization technology (MICP) can form a calcium carbonate coating on the surface of rubber particles, improve their hydrophilicity, and thus improve the strength of rubber concrete. At present, the modification of rubber particles by microbial mineralization technology mostly adopts the "stepwise method" or "batch processing method", that is, the rubber particles are first soaked and adsorbed in the bacterial solution, and then taken out and transferred to another reactor to add mineralization solution (urea and calcium salt solution) for reaction. After the reaction is completed, they need to be taken out again for cleaning and drying. This method has the following disadvantages: (1) low efficiency, the stepwise processing procedure is cumbersome, and multiple material transfers are required, which is time-consuming and labor-intensive; (2) uneven effect, during the batch processing, the rubber particles are prone to agglomeration, resulting in some particles being over-mineralized and some being under-mineralized, resulting in poor consistency of modification effect. Therefore, a device that can achieve continuous and integrated processing is needed to solve the above problems. Utility Model Content

[0003] The main purpose of this invention is to provide an integrated processing device for microbial mineralization modified rubber particles to solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides an integrated processing device for microbial mineralization modified rubber particles, including a main reaction tank, which is equipped with a feeding unit, a modification reaction unit, a discharge unit and a monitoring unit. The feeding unit includes a rubber particle inlet and a liquid inlet located at the top of the main reaction tank. The liquid inlet is connected to an inlet pipe, which is equipped with an inlet valve and an inlet pump. The inlet pipe is used to connect to an external bacterial liquid container, a mineralized liquid container, or a clean water container. The modified reaction unit includes a stirring arm disposed inside the main reaction vessel and an electric motor installed on the top of the main reaction vessel, wherein the output shaft of the electric motor is poweredly connected to the stirring arm; The discharge unit includes a filter screen, a bottom cover, a discharge port, a discharge valve, a discharge pump, and a collector. The bottom of the main reaction tank is provided with a discharge pipe. The filter screen is installed at the top of the discharge pipe, the bottom cover is installed at the bottom of the discharge pipe, the discharge port is opened on the side wall of the discharge pipe and located below the filter screen, the discharge port is connected to the collector through the discharge pipe, and the discharge valve and the discharge pump are provided on the discharge pipe. The monitoring unit includes a thermometer for monitoring the temperature of the reaction liquid and a timer for measuring the reaction time.

[0005] Furthermore, a protective cover is provided on the rubber granule inlet.

[0006] Furthermore, the main reaction vessel is made of plexiglass or ceramic.

[0007] Furthermore, the main reaction vessel is shaped like an inverted funnel.

[0008] Furthermore, the main reaction vessel is provided with supporting feet at the bottom.

[0009] Furthermore, the filter screen has a detachable structure, and the pore size of the filter screen is smaller than the particle size of the rubber particles to be modified.

[0010] This utility model has the following beneficial effects: 1. This utility model adopts an integrated design, which integrates pretreatment, reaction and monitoring into one device, realizing continuous processing from raw materials to modified finished products. It eliminates the need for multiple material transfers, simplifies the operation process, greatly improves the modification efficiency, and reduces manual intervention and site occupation.

[0011] 2. This utility model effectively prevents rubber particles from clumping by using the stirring action of the stirring arm, ensuring that each rubber particle can be evenly contacted by the bacterial solution and mineralization solution, thus improving the consistency of the modification effect and making it easier to obtain a calcium carbonate coating with uniform thickness, resulting in more stable product quality.

[0012] 3. This utility model integrates a monitoring unit, which can monitor the reaction temperature and duration in real time, facilitating precise control of the reaction process and ensuring the quality of modification.

[0013] 4. This utility model has a simple structure, reasonable design, and convenient operation, making it suitable for large-scale production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an integrated treatment device for microbial mineralization modified rubber particles according to the present invention.

[0015] Among them, 1-main reaction vessel; 2-support leg; 3-rubber granule inlet; 4-liquid inlet; 5-liquid inlet valve; 6-small pump; 7-stirring arm; 8-motor; 9-filter screen; 10-bottom cover; 11-drain outlet; 12-valve; 13-drain pump; 14-liquid collector; 15-thermometer; 16-timer. Detailed Implementation

[0016] To achieve the above objectives and effects, the technical means and structure adopted by this utility model are described in detail with reference to the accompanying drawings, focusing on the features and functions of the preferred embodiments of this utility model.

[0017] like Figure 1 As shown, this utility model provides an integrated processing device for microbial mineralization modification of rubber particles, including a main reaction tank 1. The main reaction tank 1 is made of materials such as plexiglass or ceramic, which are not prone to chemical reactions. The main reaction tank 1 is shaped like an inverted funnel, which facilitates the downward discharge of internal materials. Supporting feet 2 are provided at the bottom of the main reaction tank 1 to support the entire main reaction tank 1 on a flat surface. A feeding unit, a modification reaction unit, a discharge unit, and a monitoring unit are arranged on the main reaction tank 1.

[0018] The feeding unit mainly includes a rubber granule inlet 3 and a liquid inlet 4 located at the top of the main reaction tank 1. The rubber granule inlet 3 is used to add rubber granules to the main reaction tank 1 and is equipped with a protective cover to prevent material leakage during the reaction. The liquid inlet 4 is used to inject the bacterial solution, mineralization solution, or clean water required for the mineralization reaction into the main reaction tank 1. An inlet pipe is connected to the liquid inlet 4, and an inlet valve 5 and an inlet pump 6 are installed on the inlet pipe. The liquid inlet 4 is connected to the bacterial solution container, mineralization solution container, or clean water container via the inlet pipe. The required liquid is injected into the main reaction tank 1 via the inlet pump 6, and the liquid entry is controlled by the inlet valve 5.

[0019] The modification reaction unit includes a stirring arm 7 installed inside the main reaction tank 1 and a motor 8 installed inside the main reaction tank 1. The output shaft of the motor 8 is poweredly connected to the stirring arm 7. During the reaction, the stirring arm 7, driven by the motor 8, stirs the rubber particles inside the main reaction tank 1 to increase the contact between the reaction liquid and the rubber particles, thereby improving the uniformity of the mineralization reaction.

[0020] The discharge unit is used for discharging waste liquid and modified rubber particles, and includes a filter screen 9, a bottom cover 10, a drain port 11, a drain valve 12, a drain pump 13, and a collector 14. A discharge pipe is installed at the bottom of the main reaction tank 1. The filter screen 9 is installed at the top of the discharge pipe, the bottom cover 10 is installed at the bottom of the discharge pipe, and the drain port 11 is located on the side wall of the discharge pipe below the filter screen 9. The drain port 11 is connected to the collector 14 through the drain pipe. The drain valve 12 and the drain pump 13 are located on the drain pipe. During the mineralization modification process, the bottom cover 10 and the drain valve 12 are both closed, and no material is discharged. When it is necessary to discharge the liquid from the main reaction tank 1, the drain valve 12 is opened, the bottom cover 10 is kept closed, and the liquid in the main reaction tank 1 is discharged into the collector 14 by the drain pump 13. At this time, the filter screen 9 is closed, and the rubber particles can be supported inside the main reaction tank 1 without being discharged. After the mineralization modification is completed, the liquid in the main reaction tank 1 is first discharged, and then the bottom cover 10 and filter screen 9 are opened. At the same time, the stirring arm 7 is slowly started to discharge the modified rubber particles from the bottom of the main reaction tank 1 for the preparation of rubber concrete.

[0021] The monitoring unit includes a thermometer 15 installed inside the main reaction vessel 1 and a timer 16 installed on the outer side wall of the main reaction vessel 1. The thermometer 15 is used to monitor the temperature of the liquid during the mineralization reaction to indicate whether the mineralization reaction is within a suitable reaction temperature range. The timer 16 is used to measure the adsorption time and reaction time of the bacterial solution during the mineralization reaction to indicate when to replace the liquid or when the reaction is complete.

[0022] The parameters for microbial mineralization modification of rubber particles are designed as follows: 10 kg of rubber particles to be modified require 20 L of bacterial solution and 40 L of mineralization solution for one treatment. The adsorption time of the bacterial solution is 8 hours, and the reaction time of the mineralization solution is 48 hours. The modification method using this device is as follows: Step 1: Weigh 10kg of rubber granules to be modified, open the protective cover on the rubber granule inlet 3, pour the rubber granules from the rubber granule inlet 3 into the main reaction tank 1, and close the protective cover on the rubber granule inlet 3.

[0023] Step 2: Connect the liquid inlet 4 to a clean water container, open the liquid inlet valve 5 and the liquid inlet pump 6, and inject an appropriate amount of clean water into the main reaction tank 1; turn on the motor 8 to rotate the stirring arm 7 to stir and clean the rubber particles in the main reaction tank 1 to remove dust, impurities, etc. from the surface of the rubber particles; after cleaning, turn off the motor 8, keep the filter screen 9 and the bottom cover 10 closed, open the drain valve 12, and discharge the waste liquid after cleaning into the collector 14 through the drain pump 13 for appropriate post-treatment.

[0024] Step 3: After the cleaning water in the main reaction tank 1 has been completely drained, close the drain valve 12 and the drain pump 13. Connect the inlet pipe of the liquid inlet 4 to the bacterial solution container and inject 20L of bacterial solution into the main reaction tank 1 in the same manner as injecting clean water. Turn on the motor 8 to rotate the stirring arm 7 and continuously stir the rubber particles in the main reaction tank 1 for 10 minutes. Then turn off the motor 8 to stop stirring and allow the bacteria to fully adsorb onto the surface of the rubber particles. Turn on the timer 16 and set a countdown of 8 hours. After the countdown ends, completely drain the bacterial solution from the main reaction tank 1 using the method in Step 2.

[0025] Step 4: After the bacterial solution in the main reaction tank 1 is completely drained, close the drain valve 12 and drain pump 13. Connect the inlet pipe of the liquid inlet 4 to the mineralization solution container and inject 40L of mineralization solution into the main reaction tank 1 in the same manner as injecting clean water. Turn on the motor 8 to rotate the stirring arm 7 and continuously stir the rubber particles in the main reaction tank 1 for 10 minutes. Then turn off the motor 8 to stop stirring and allow the mineralization reaction to fully occur on the surface of the rubber particles. Turn on the timer 16 and set a countdown of 48 hours. During the mineralization reaction, monitor the temperature in the main reaction tank 1 in real time using the thermometer 15, and stir the rubber particles for 10 minutes every 6 hours to ensure that the mineralization reaction occurs evenly. After the countdown ends, completely drain the liquid in the main reaction tank 1 according to the method in Step 2.

[0026] Step 5: After the bacterial solution in the main reaction tank 1 is completely discharged, open the bottom cover 10 and the filter screen 9, and at the same time rotate the stirring arm 7 to discharge the mineralized and modified rubber particles from the discharge pipe at the bottom of the main reaction tank 1. Then, the rubber particles are subjected to subsequent drying treatment for the preparation of rubber concrete.

[0027] Step Six: After the mineralization modification is completed, close the filter screen 9, the bottom cover 10, and the drain valve 12. Connect the inlet pipe of the liquid inlet 4 to the cleaning liquid container, open the inlet valve 5 and the inlet pump 6, inject a certain amount of cleaning liquid into the main reaction tank 1, rotate the stirring arm 7 to clean the inside of the main reaction tank 1, and then discharge the cleaned liquid from the discharge pipe at the bottom of the main reaction tank 1.

[0028] Step 7: Close all valves and inlets / outlets of the device for future use.

[0029] The above description is only a preferred embodiment of the present utility model and not all embodiments. Anyone should know that structural changes made under the guidance of the present utility model are protected by the present utility model. All technical solutions that are the same as or similar to the present utility model are within the scope of protection of the present utility model.

Claims

1. An integrated processing device for microbial mineralization modified rubber particles, characterized in that, It includes a main reaction vessel (1), which is equipped with a feeding unit, a modification reaction unit, a discharge unit and a monitoring unit; The feeding unit includes a rubber particle inlet (3) and a liquid inlet (4) located at the top of the main reaction tank (1). The liquid inlet (4) is connected to a liquid inlet pipe, and the liquid inlet pipe is equipped with a liquid inlet valve (5) and a liquid inlet pump (6). The liquid inlet pipe is used to connect to an external bacterial liquid container, a mineralized liquid container, or a clean water container. The modified reaction unit includes a stirring arm (7) disposed inside the main reaction vessel (1) and a motor (8) installed on the top of the main reaction vessel (1), wherein the output shaft of the motor (8) is poweredly connected to the stirring arm (7); The discharge unit includes a filter screen (9), a bottom cover (10), a discharge port (11), a discharge valve (12), a discharge pump (13), and a collector (14). The main reaction tank (1) is provided with a discharge pipe at the bottom. The filter screen (9) is installed at the top of the discharge pipe, the bottom cover (10) is installed at the bottom of the discharge pipe, the discharge port (11) is opened on the side wall of the discharge pipe and located below the filter screen (9), the discharge port (11) is connected to the collector (14) through the discharge pipe, and the discharge valve (12) and the discharge pump (13) are set on the discharge pipe. The monitoring unit includes a thermometer (15) for monitoring the temperature of the reaction liquid and a timer (16) for measuring the reaction time.

2. The integrated processing device for microbial mineralization modified rubber particles as described in claim 1, characterized in that, The rubber granule inlet (3) is equipped with a protective cover.

3. An integrated processing device for microbial mineralization modified rubber particles as described in claim 1 or 2, characterized in that, The main reaction vessel (1) is made of plexiglass or ceramic.

4. The integrated processing device for microbial mineralization modified rubber particles as described in claim 3, characterized in that, The main reaction vessel (1) is shaped like an inverted funnel.

5. An integrated processing device for microbial mineralization modified rubber particles as described in claim 1 or 4, characterized in that, The main reaction vessel (1) is provided with supporting feet (2) at the bottom.

6. The integrated processing device for microbial mineralization modified rubber particles as described in claim 5, characterized in that, The filter screen (9) is a detachable structure, and the pore size of the filter screen (9) is smaller than the particle size of the rubber particles to be modified.

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