Full-automatic preparation system for bentonite slurry

Abstract

The utility model discloses a full-automatic preparation system for bentonite slurry, which belongs to the field of slurry preparation and comprises a slurry stirring device, the slurry stirring device comprises a stirring barrel and a stirring motor, the stirring motor is arranged outside the stirring barrel, an output shaft of the stirring motor is connected with a stirring shaft extending into the stirring barrel, and the stirring shaft is connected with the stirring barrel. A stirrer is arranged on the stirring shaft, a flexible baffle is arranged on the periphery of the stirrer, and a flexible water baffle is arranged on the inner wall of the stirring barrel; the stirring barrel is connected with a water feeding system and a bentonite feeding system, the water feeding system is used for adding water into the stirring barrel, the bentonite feeding system is used for adding bentonite into the stirring barrel, and the stirring barrel is provided with a discharging system for discharging stirred bentonite slurry. According to the utility model, full-automatic intelligent preparation of bentonite slurry is realized, full stirring in the stirring barrel is realized, and a solid phase in the slurry is uniformly distributed.

Description

Technical Field

[0001] The utility model relates to the technical field of mud preparation, in particular to a full-automatic bentonite mud preparation system. Background Art

[0002] Bentonite mud is often used in bored cast-in-place piles, trenchless construction, diaphragm walls, and oil drilling operations. Bentonite, also known as montmorillonite, is a non-metallic mineral mainly composed of montmorillonite and is also a widely used natural mineral material. When bentonite encounters water, it swells. The main reason for this natural phenomenon is that the crystal layer spacing of bentonite minerals increases, and water molecules enter the crystal layers of the minerals. In addition, the cation exchange effect of bentonite minerals also causes bentonite to swell. Currently, existing mud preparation systems generally directly add bentonite to the slurry and then stir and mix it.

[0003] The existing bentonite mud preparation technology cannot fully mix and stir bentonite with water, resulting in uneven distribution of solids in the mud and unable to achieve full-automatic mud preparation. Summary of the Utility Model

[0004] The utility model provides a full-automatic bentonite mud preparation system, which realizes the full-automatic and intelligent preparation of bentonite mud, and fully stirs the inside of the stirring tank, so that the solids in the mud are evenly distributed.

[0005] The technical solution provided by the utility model is as follows:

[0006] A full-automatic bentonite mud preparation system includes a mud stirring device. The mud stirring device includes a stirring tank and a stirring motor. The stirring motor is arranged outside the stirring tank. The output shaft of the stirring motor is connected with a stirring shaft extending into the stirring tank. A stirrer is arranged on the stirring shaft. A flexible baffle is arranged on the periphery of the stirrer, and a flexible water baffle is arranged on the inner wall of the stirring tank.

[0007] The stirring tank is connected with a water supply system for adding water into the stirring tank and a bentonite feeding system for adding bentonite into the stirring tank. The stirring tank is provided with a discharging system for discharging the stirred bentonite mud.

[0008] Further, the stirrer includes a stirring support. The stirring support is detachably connected to the stirring shaft through a connecting structure. The flexible baffle is vertically arranged on the periphery of the stirring support. The flexible water baffle is vertically arranged on the inner wall of the stirring tank. A transverse mud scraping plate is arranged at the bottom of the stirring support.

[0009] Further, the full-automatic bentonite mud preparation system further includes a water storage tank and a bentonite storage bin. The input end of the water supply system is connected to the water storage tank, and the output end is connected to the mixing barrel. The input end of the bentonite feeding system is connected to the bentonite storage bin, and the output end is connected to the mixing barrel.

[0010] Further, the water supply system includes a water pump and a water supply pipe. The bentonite feeding system includes a first screw feeder. The mixing barrel has a top cover, and the mixing motor is arranged on the top cover. The mixing shaft extends downward into the mixing barrel.

[0011] An inlet and a feed inlet are formed in the top cover of the mixing barrel. The input end of the water supply pipe is connected to the water storage tank, and the output end is connected to the inlet. The input end of the first screw feeder is connected to the bentonite storage bin, and the output end is connected to the feed inlet.

[0012] Further, the water storage tank is connected with a water tank water inlet device. The input end of the water tank water inlet device is communicated with a water source, and the output end is connected to the water tank. The bentonite storage bin is provided with a storage bin loading device.

[0013] Further, the storage bin loading device includes a loading crane mechanism or a conveyor belt mechanism. A puncture-type filling funnel is arranged above the bentonite storage bin, and a puncture structure is arranged in the puncture-type filling funnel.

[0014] Alternatively, the storage bin loading device includes a second screw feeder.

[0015] Further, the full-automatic bentonite mud preparation system further includes a mud storage device. The input end of the discharging system is connected to the mixing barrel, and the output end is connected to the mud storage device.

[0016] Further, the discharging system includes a discharging pipeline and a discharging valve arranged on the discharging pipeline. A liquid discharge port is arranged at the bottom end of the mixing barrel. The input end of the discharging pipeline is connected to the liquid discharge port, and the output end is connected to the mud storage device.

[0017] Further, an exhaust pipeline is arranged at the bottom of the mud storage device. A series of air holes are arranged on the exhaust pipeline, and the exhaust pipeline is connected to an external gas source.

[0018] Further, a flow meter is arranged on the water supply pipe, and a weighing sensor is arranged on the mixing barrel. The flow meter and the weighing sensor are connected to a PLC controller. The mixing motor, the water pump, the first screw feeder and the discharging valve are connected to the PLC controller and controlled by the PLC controller.

[0019] The utility model has the following beneficial effects:

[0020] When the utility model is in use, water and bentonite are automatically added into the mixing barrel through the water supply system and the bentonite feeding system, and are automatically stirred by the mud stirring device. After the automatic stirring is completed, the discharging is automatically carried out through the discharging system, which improves the traditional pulping mode, realizes the full-automatic intelligent preparation of bentonite mud, reduces the labor, improves the pulping efficiency and reduces the pulping cost. Moreover, the utility model is provided with a flexible water baffle on the inner wall of the mixing barrel to break up the unevenly stirred bentonite during the working process, so that the mud is stirred evenly; a flexible baffle is arranged outside the stirrer and collides with the flexible water baffle during the stirring process, so that the bentonite and water are fully mixed and stirred to achieve the expected stirring effect; the positions of the flexible baffle and the flexible water baffle are correspondingly inlaid and cooperate with each other, so that the inside of the mixing barrel is fully stirred and the solid phase in the mud is evenly distributed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional view of the full-automatic bentonite mud preparation system of the utility model;

[0022] Figure 2 is a side view of the full-automatic bentonite mud preparation system of the utility model;

[0023] Figure 3 is a schematic diagram of the water supply system;

[0024] Figure 4 is a plan sectional view of the mixing barrel;

[0025] Figure 5 is a three-dimensional sectional view of the mixing barrel;

[0026] Figure 6 is a schematic diagram of the puncture-type filling funnel;

[0027] Figure 7 is a schematic diagram of the storage bin loading device of the conveyor belt mechanism;

[0028] Figure 8 is a schematic diagram of the storage bin loading device of the second spiral feeder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0030] The utility model provides a full-automatic bentonite mud preparation system, as Figure 1-8As shown in the figure, it includes a mud stirring device 1, and the mud stirring device 1 includes a stirring barrel 2 and a stirring motor 3 (and its speed reducer). The stirring barrel 2 can be a large-capacity circular stirring barrel. The stirring motor 3 is arranged outside the stirring barrel 2, and the output shaft of the stirring motor 3 is connected with a stirring shaft 4 extending into the stirring barrel 2. A stirrer 5 is arranged on the stirring shaft 4, a flexible baffle 6 is arranged on the periphery of the stirrer 5, and a flexible water baffle 7 is arranged on the inner wall of the stirring barrel 2.

[0031] The stirring barrel 2 is connected with a water supply system 8 for adding water into the stirring barrel 2 and a bentonite feeding system 9 for adding bentonite into the stirring barrel 2. The stirring barrel 2 is provided with a discharging system 10 for discharging the stirred bentonite mud.

[0032] When the utility model is in use, water and bentonite are automatically added into the stirring barrel through the water supply system and the bentonite feeding system, and are automatically stirred by the mud stirring device. After the automatic stirring is completed, the discharging is automatically carried out through the discharging system, improving the traditional pulp making mode, realizing the full-automatic intelligent preparation of bentonite mud, reducing the labor, improving the pulp making efficiency and reducing the pulp making cost. Moreover, the utility model is provided with a flexible water baffle on the inner wall of the stirring barrel to break up the unevenly stirred bentonite during the working process, making the mud stirred evenly; a flexible baffle is arranged on the periphery of the stirrer and collides with the flexible water baffle during the stirring process, enabling the bentonite and water to be fully fused and stirred to achieve the expected stirring effect; the flexible baffle and the flexible water baffle are correspondingly inlaid and cooperate with each other to fully stir the inside of the stirring barrel and make the solid phase in the mud evenly distributed.

[0033] The utility model does not limit the specific setting form of the stirrer. In one example, the stirrer 5 includes a stirring support 11. A specific setting mode of the stirring support 11 can be a support structure connected by a cross bar, a vertical bar and an inclined bar. The stirring support 11 is detachably connected to the stirring shaft 4 through a connecting structure 12 and fixing bolts, etc. The stirring support 11 itself can also be detachable and fixed by bolts, etc., which is convenient for later disassembly and maintenance. The structure of the connecting structure 12 can be set according to needs and is not limited thereto.

[0034] The aforementioned flexible baffle 6 is vertically arranged on the periphery of the stirring support 11, and the flexible water baffle 7 is vertically arranged on the inner wall of the stirring barrel 2. A horizontal mud scraping plate 13 is arranged at the bottom of the stirring support 11 to scrape up the solid phase substances deposited at the bottom during the stirring process and prevent precipitation.

[0035] As an improvement of the embodiment of the utility model, the full-automatic bentonite mud preparation system further includes a water storage tank 14 and a bentonite storage bin 15. The input end of the water supply system 8 is connected with the water storage tank 14, and the output end is connected with the stirring barrel 2. The input end of the bentonite feeding system 9 is connected with the bentonite storage bin 15, and the output end is connected with the stirring barrel 2.

[0036] Specifically, the mixing barrel 2 is provided with a top cover 18, the mixing motor 3 and the reducer are arranged on the top cover 18, and the mixing shaft 4 extends downward into the mixing barrel 2. The water supply system 8 includes a water pump 16 and a water supply pipe 17. An inlet 19 is opened on the top cover 18 of the mixing barrel 2. The input end of the water supply pipe 17 is connected to the water storage tank 14, and the output end is connected to the inlet 19.

[0037] The bentonite feeding system 9 includes a first screw feeder which is inclined at an angle of 45-60°. An inlet 20 is opened on the top cover 18 of the mixing barrel 2. The input end of the first screw feeder is connected to the bentonite storage bin 15, and the output end is connected to the inlet 20.

[0038] The water storage tank 14 is connected with a water tank water inlet device which is arranged between the water storage tank and the water source to replenish water for the water storage tank 14. Its input end is communicated with the water source, and the output end is connected to the water tank 14.

[0039] The bentonite storage bin 15 is provided with a storage bin loading device, where:

[0040] The storage bin loading device includes a loading crane mechanism 21 or a conveyor belt mechanism 22. A puncturing type loading funnel 23 is arranged above the bentonite storage bin 15, and a puncturing structure 24 is arranged inside the puncturing type loading funnel 23.

[0041] During loading, the bentonite bale is conveyed from the ground or the vehicle to the puncturing type loading funnel 23 through the loading crane (or winch, etc.) mechanism 21 or the conveyor belt mechanism 22, realizing remote control and remote feeding, which is convenient and fast and reduces labor. And during the feeding process, there is no need for manual opening of the bale. Using the self-weight of the bentonite bale, the puncturing structure 24 such as the blade inside the puncturing type loading funnel 23 punctures the bottom of the bentonite bale, and the bentonite automatically falls downward into the bentonite storage bin 15, thus realizing automatic loading.

[0042] Or, the storage bin loading device includes a second screw feeder 25. The bentonite piled on the ground or placed in a ground container is conveyed into the bentonite storage bin 15 through the second screw feeder 25 to realize automatic loading. At this time, a funnel can be arranged above the bentonite storage bin 15 or not. When a funnel is arranged, it can be an ordinary funnel or a puncturing type loading funnel.

[0043] Both the aforementioned puncturing type loading funnel and ordinary funnel can be circular, square or other shapes.

[0044] Both the aforementioned first screw feeder and second screw feeder include a conveying cylinder, a conveying shaft rotatably arranged in the conveying cylinder, screw blades arranged on the conveying shaft, a driving motor for driving the conveying shaft to rotate, an output port arranged at the top end of the conveying cylinder, and an input port arranged at the bottom end of the conveying cylinder.

[0045] As another improvement of the present utility model, the full-automatic bentonite mud preparation system further includes a mud storage device 26, which can be a mud pit or a mud tank, etc., for storing the prepared mud. The input end of the discharging system 10 is connected to the mixing barrel 2, and the output end is connected to the mud storage device 26.

[0046] Specifically, the discharging system 10 includes a discharging pipeline 27 and a discharging valve 28 (such as a discharging butterfly valve, etc. and its electric actuator) arranged on the discharging pipeline 27. A liquid discharging port is arranged at the bottom end of the mixing barrel 2. The input end of the discharging pipeline 27 is connected to the liquid discharging port, and the output end is connected to the mud storage device 26.

[0047] To prevent the mud in the mud storage device 26 from settling, an exhaust pipeline 29 is arranged at the bottom of the mud storage device 26. A series of air holes are arranged on the exhaust pipeline 29, and the exhaust pipeline 29 is connected to an external air source (such as an air compressor or an air storage tank, etc.).

[0048] The exhaust pipeline 29 uses aerodynamic force to continuously discharge gas through the air holes, so that the solid phase can be fully and evenly distributed in the mud to prevent the mud from settling. The exhaust pipeline 29 can be one, or a combination of multiple ones. It can be arranged in multiple rows side by side in the mud storage device 26, or one can be arranged reciprocally or spirally, and it is preferably evenly laid at the bottom of the mud storage device 26.

[0049] A vibration device can be arranged on the aforementioned bentonite storage bin 15 to continuously or intermittently vibrate the bentonite storage bin 15 to prevent the bentonite from adhering to the side wall of the bentonite storage bin 15. Each of the aforementioned components can be fixedly arranged on a support seat.

[0050] To achieve automatic control, a flow meter 30 is arranged on the aforementioned water supply pipe 8, a weighing sensor is arranged on the mixing barrel 2, the flow meter 30 and the weighing sensor are connected to a PLC controller, and the aforementioned mixing motor 3, water pump 16, first screw feeder, and discharging valve 28 are connected to the PLC controller and controlled by the PLC controller.

[0051] The water pump 16 is controlled by a PLC. When the water pump 16 is started, water is pumped from the water storage tank 14 and conveyed into the mixing barrel 2. During the pumping process, it is detected by the flowmeter 30 and automatically starts and stops when the set amount is reached. A weighing sensor is used to measure the input amount of solid-phase materials, and a flowmeter is used to measure the added amount of water, making the preparation of bentonite mud more refined and facilitating adjustment and control according to the specific gravity of the mud.

[0052] The automatic control process of the present utility model is as follows:

[0053] 1. One-key startup when powering on. 2. Set the mud specific gravity. 3. Start. 4. Start the water pump motor and start water supply, and the flowmeter starts to measure. 5. After 10 seconds of water supply, start the first spiral feeder to feed bentonite, and at the same time, start the mixing motor to mix. 6. When the flowmeter detects that the added water reaches the set amount, stop water intake. 7. When the weighing sensor detects that the total weight reaches the preset value, stop the first spiral feeder. 8. The mixing motor continues to mix for 20 seconds until the mud reaches the expected effect, and then stop mixing. 9. After mixing is completed, the electric butterfly valve automatically opens for discharging. 10. After discharging is completed, close the electric butterfly valve, and repeat the above process for cyclic operation.

[0054] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle described in the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A fully automatic bentonite slurry preparation system, characterized in that: The invention comprises a mud stirring device, wherein the mud stirring device comprises a stirring barrel and a stirring motor, wherein the stirring motor is arranged outside the stirring barrel, wherein the output shaft of the stirring motor is connected to a stirring shaft extending into the stirring barrel, wherein an agitator is arranged on the stirring shaft, wherein a flexible baffle is arranged on the outer periphery of the agitator, and a flexible water baffle is arranged on the inner wall of the stirring barrel; The stirring barrel is connected to a water supply system for adding water into the stirring barrel and a bentonite feeding system for adding bentonite into the stirring barrel. The stirring barrel is provided with a discharging system for discharging the bentonite slurry after stirring.

2. The fully automatic bentonite slurry preparation system according to claim 1, characterized in that: The agitator includes a stirring bracket, which is detachably connected to the stirring shaft through a connecting structure, the flexible baffle is vertically arranged on the periphery of the stirring bracket, the flexible water baffle is vertically arranged on the inner wall of the stirring barrel, and a horizontal scraper is arranged at the bottom of the stirring bracket.

3. The fully automatic bentonite slurry preparation system according to claim 1, characterized in that: The fully automatic bentonite slurry preparation system also includes a water tank and a bentonite storage bin. The input end of the water supply system is connected to the water tank, and the output end is connected to the stirring barrel. The input end of the bentonite feeding system is connected to the bentonite storage bin, and the output end is connected to the stirring barrel.

4. The fully automatic bentonite slurry preparation system according to claim 3, characterized in that: The water supply system includes a water pump and a water supply pipe, and the bentonite feeding system includes a first screw feeder; the mixing barrel has a top cover, the mixing motor is arranged on the top cover, and the mixing shaft extends downward into the mixing barrel; A water inlet and a feed port are provided on the top cover of the mixing barrel, the input end of the water supply pipe is connected to the water storage tank, and the output end is connected to the water inlet, the input end of the first screw feeder is connected to the bentonite storage bin, and the output end is connected to the feed port.

5. The fully automatic bentonite slurry preparation system according to claim 4, characterized in that: The water storage tank is connected to a water tank water inlet device, the input end of the water tank water inlet device is connected to a water source, and the output end is connected to the water tank; the bentonite storage bin is provided with a storage bin loading device.

6. The fully automatic bentonite slurry preparation system according to claim 5, characterized in that: The storage bin loading device includes a loading crane mechanism or a conveyor belt mechanism, a puncture-type filling funnel is arranged above the bentonite storage bin, and a puncture structure is arranged inside the puncture-type filling funnel; Alternatively, the storage bin charging device includes a second screw loader.

7. The fully automatic bentonite slurry preparation system according to claim 4, characterized in that: The fully automatic bentonite slurry preparation system also includes a slurry storage device. The input end of the unloading system is connected to the stirring barrel, and the output end is connected to the slurry storage device.

8. The fully automatic bentonite slurry preparation system according to claim 7, characterized in that: The unloading system comprises a unloading pipe and a unloading valve arranged on the unloading pipe. A liquid discharge port is arranged at the bottom of the mixing barrel. The input end of the unloading pipe is connected to the liquid discharge port, and the output end is connected to the mud storage device.

9. The fully automatic bentonite slurry preparation system according to claim 8, characterized in that: An exhaust pipe is arranged at the bottom of the mud storage device, a series of air outlet holes are arranged on the exhaust pipe, and the exhaust pipe is connected to an external air source.

10. The fully automatic bentonite slurry preparation system according to claim 8, characterized in that: The water supply pipe is provided with a flow meter, the mixing barrel is provided with a weighing sensor, the flow meter and the weighing sensor are connected to a PLC controller, and the mixing motor, water pump, first screw feeder and discharge valve are connected to and controlled by the PLC controller.

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