Combined weighing device of bentonite mixing plant

Abstract

The invention discloses a combined weighing device of a bentonite mixing plant, and belongs to the technical field of quantitative stirring of bentonite. A control chamber, a water tank and a stirring barrel are fixedly mounted in the support frame; a feeding door is installed on the storage bin in a hinged mode, and a discharging opening is formed in the bottom of the storage bin; the quantifying mechanism is arranged below the storage bin, and the quantifying mechanism is used for metering and weighing the bentonite in the storage bin and then conveying the bentonite into the stirring barrel; the stirring mechanism is arranged in the stirring barrel, the stirring mechanism is used for stirring and mixing bentonite and water which are introduced into the stirring barrel, through the arrangement of the metering hopper, the first weighing sensor, the second weighing sensor and the stirring pump, the bentonite and the water are independently metered, accuracy and reliability are achieved, and the bentonite and the water can be conveniently and rapidly metered; the large weighing error caused by high-speed impact of water flow is reduced, the proportioning accuracy is improved, and the economic benefit is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of quantitative mixing of bentonite, and particularly to a combined weighing device for a bentonite mixing station. Background Art

[0002] Bentonite is also called montmorillonite, saponite or bentonite rock. It has special water absorption, water plasticity, adhesiveness and strong ion exchangeability, etc. It is one of the clay minerals with the widest application range and relatively high economic value today. It has been widely used in various fields such as metallurgy, machinery, petroleum, chemical industry, polymer materials and environmental protection. It is an indispensable auxiliary material for industries such as national iron and steel smelting, casting, petroleum extraction, catalytic cracking, etc., and the consumption is very large.

[0003] During the processing of bentonite, due to the characteristics of bentonite itself, water must be involved in its processing. The quantitative mixing of bentonite and water can ensure that it can achieve the expected performance and effect when in use. However, the existing bentonite is prone to a large weighing error caused by the high-speed impact of water flow during mixing with water, and due to the high humidity of bentonite, some bentonite will agglomerate, affecting the mixing effect. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the existing bentonite is prone to a large weighing error caused by the high-speed impact of water flow during mixing with water, and due to the high humidity of bentonite, some bentonite will agglomerate, affecting the mixing effect, and to propose a combined weighing device for a bentonite mixing station.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] A combined weighing device for a bentonite mixing station, comprising: a support frame, in which a control room, a water tank and a mixing barrel are fixedly installed; a water outlet pipe is fixedly connected between the water tank and the mixing barrel; a discharging system is fixedly installed on the mixing barrel; a storage bin, which is fixedly installed above the support frame, and an inlet and an inlet door hinged to the inlet are provided on the storage bin, a discharge outlet is provided at the bottom of the storage bin, and a blanking bin that can be hermetically connected to the discharge outlet is welded on the support frame; a quantitative mechanism, which is arranged below the storage bin and is used for conveying the bentonite in the storage bin to the mixing barrel after metering and weighing; a mixing mechanism, which is arranged in the mixing barrel and is used for mixing the bentonite and water introduced into the mixing barrel.

[0007] To enable cyclic flow and increase the mixing of bentonite and water, preferably, the discharging system includes a stirring pump. A discharging pipe is fixedly connected between the input end of the stirring pump and the stirring barrel. The output end of the stirring pump is fixedly connected to a three-way pipe through a flange. A circulating pipe is fixedly connected between the three-way pipe and the stirring barrel. A first valve is fixedly installed on the circulating pipe. The other outlet end of the three-way pipe is fixedly connected to a feeding pipe, and a second valve is fixedly installed on the feeding pipe.

[0008] To separately measure the weight of bentonite, preferably, the metering mechanism includes: a metering hopper with openings at both ends. Through holes are provided at the four corners of the metering hopper. A support rod is slidably installed in any one of the through holes. One end of the support rod is fixedly connected to the bottom of the storage bin, and a first weighing sensor is fixedly installed at the other end of the support rod. A spring is movably installed on the support rod, and both ends of the spring are respectively fixedly connected to the bottom of the storage bin and the metering hopper. A cylinder is fixedly installed on the metering hopper, and a baffle is fixedly installed at the movable end of the cylinder. The baffle is used to block the lower opening of the metering hopper. A conveying auger, the feeding end of the conveying auger is hermetically connected to the discharging bin, and the discharging end of the conveying auger is located inside the metering hopper.

[0009] To separately measure the weight of water, further, positioning seats are fixedly installed on the opposite surfaces of the support frame and the stirring barrel, and a second weighing sensor is fixedly installed between the opposite positioning seats.

[0010] To convey the bentonite in the metering hopper into the stirring barrel, further, an L-shaped conveying box is fixedly installed at one end of the metering hopper close to the stirring barrel. The vertical section provided on the L-shaped conveying box extends into the stirring barrel, and a first belt conveyor mechanism is fixedly installed in the vertical section provided on the L-shaped conveying box.

[0011] To accelerate the mixing of bentonite and water and improve the mixing efficiency, furthermore, the stirring mechanism includes: a guide plate, an air chamber is fixedly installed at the center of the guide plate. Inclined tubes and openings are arranged along the circumference on the plate surface of the guide plate. The inclined tubes are communicated with the air chamber, and the inclined tubes and the openings are arranged alternately. A double-layer grid, a first connecting shaft is coaxially and fixedly installed inside the double-layer grid. The first connecting shaft is rotationally connected to the guide plate. A ring groove is provided on the surface of the double-layer grid close to the guide plate, and a guide rod is slidably installed in the ring groove. The guide rod is fixedly connected to the guide plate.

[0012] To disperse the bentonite, increase the contact with water, and reduce caking, furthermore, an air compressor is fixedly installed on the support frame. The output end of the air compressor is fixedly connected to an air pipe. The end of the air pipe far from the air compressor extends into the L-shaped conveying box and the air chamber. Air outlets are provided on the pipe wall of the air pipe located inside the L-shaped conveying box.

[0013] To achieve feeding, preferably, it further includes: a moving frame, which is slidably installed on the storage bin through a sliding mechanism; a hoisting arm, on one side of the hoisting arm close to the moving frame, a second connecting shaft is fixedly installed, and the second connecting shaft is rotationally connected to the moving frame, and a winch is fixedly installed on the hoisting arm; a bag-breaking rod, which is fixedly installed on the storage bin, and a blade is fixedly installed on the bag-breaking rod.

[0014] In order to perform 360° hoisting operations, which greatly facilitates the powder loading operation on site. Further, a first motor is fixedly installed on the moving frame, a worm is fixedly installed at the output end of the first motor, a worm gear is fixedly installed on the second connecting shaft, and the worm is meshed with the worm gear.

[0015] In order to separate bentonite from the packaging bag, even further, a second belt conveyor and a third belt conveyor are rotationally installed in the storage bin. The conveying distance of the second belt conveyor is half of that of the third belt conveyor, and the driving directions of the second belt conveyor and the third belt conveyor are opposite. An outlet for the bag is opened on the side wall of one side of the storage bin, and the outlet for the bag is flush with the third belt conveyor.

[0016] Compared with the prior art, the present invention provides a combined weighing device for a bentonite mixing station, which has the following beneficial effects:

[0017] 1. For the combined weighing device of the bentonite mixing station, through the settings of the metering hopper, the first weighing sensor, the second weighing sensor, and the mixing pump, the bentonite and water will be separately metered, which is accurate and reliable, reducing the error of over-large weighing caused by the high-speed impact of water flow, being beneficial to improving the accuracy of the ratio, and increasing the economic benefits; on the other hand, affected by the mixing pump, the bentonite and water circulate and flow between the discharging system and the mixing barrel, increasing the uniformity of the mixture of the bentonite and water;

[0018] 2. For the combined weighing device of the bentonite mixing station, through the settings of the guide plate, the double-layer grid, and the air compressor, the fed bentonite will be blown and dispersed into a powder mist and fall into the water, reducing the problem of easy caking when mixing with water; secondly, another part of the gas drives the guide plate to rotate in a floating manner up and down, increasing the contact with the object and improving the mixing performance of the bentonite and water; at the same time, the gas ejected from the inclined tube forms high-speed flowing bubbles in the mixture of the bentonite and water, and the bubbles can break up the caked bentonite, increasing the uniformity of the slurry and greatly reducing the number of agglomerated powder particles;

[0019] 3. The combined weighing device of the bentonite mixing station, through the setting of the lifting arm, bag breaking rod, second belt conveyor mechanism, and third belt conveyor mechanism, will greatly increase the unloading efficiency of bentonite. Secondly, the bentonite falls into the unloading hopper through the second belt conveyor mechanism and the third belt conveyor mechanism, while the broken bags are transported out from the bag outlet under the third belt conveyor mechanism, realizing material separation, improving the intelligence of powder loading operation, and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a combined weighing device for a bentonite mixing station proposed by the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of a combined weighing device for a bentonite mixing station proposed by the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the structure of a combined weighing device for a bentonite mixing station proposed by the present invention. Figure 3 ;

[0023] Figure 4 This is a schematic diagram of the structure of the discharging system of the combined weighing device of the bentonite mixing station proposed by the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of a combined weighing device for a bentonite mixing station proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of a metering bucket of a combined weighing device for a bentonite mixing station proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the L-shaped conveying box structure of a combined weighing device for a bentonite mixing plant proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the mixing mechanism structure of a combined weighing device for a bentonite mixing station proposed by the present invention;

[0028] Figure 9 This is a schematic diagram of the bag breaking rod structure of the combined weighing device of the bentonite mixing station proposed by the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of a mobile frame of a combined weighing device for a bentonite mixing station proposed by the present invention;

[0030] Figure 11 The invention proposes a combined weighing device for a bentonite mixing station. Figure 1 A magnified schematic diagram of the structure in the middle.

[0031] In the figure: 1, support frame; 2, control room; 3, water tank; 4, mixing barrel; 5, water outlet pipe; 6, discharging system; 601, mixing pump; 602, discharging pipe; 603, three-way pipe; 604, circulating pipe; 605, first valve; 606, feeding pipe; 607, second valve; 7, storage bin; 7-01, feeding port; 7-02, discharging port; 7-03, bag outlet; 8, feeding door; 9, blanking bin; 10, metering hopper; 1001, through hole; 11, support rod; 12, first weighing sensor; 13, spring; 14, conveying auger; 15, air cylinder; 16, baffle; 17, L-shaped conveying box; 18, first belt conveyor; 19, positioning seat; 20, second weighing sensor; 21, air compressor; 22, air pipe; 2201, air outlet; 23, double-layer grille; 2301, annular groove; 24, first connecting shaft; 25, guide plate; 2501, inclined pipe; 2502, opening; 2503, air chamber; 26, guide rod; 27, moving frame; 28, hoisting arm; 2801, second connecting shaft; 29, winch; 30, bag-breaking rod; 3001, blade; 31, first motor; 32, worm gear; 33, worm; 34, second belt conveyor; 35, third belt conveyor; 36, guide rail; 37, roller; 38, transmission shaft; 39, sprocket; 40, second motor. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] Embodiment 1:

[0035] Refer to Figures 1 - 3, A combined weighing device for a bentonite mixing station, comprising: a support frame 1, inside which a control room 2, a water tank 3 and a mixing barrel 4 are fixedly installed. A water outlet pipe 5 is fixedly connected between the water tank 3 and the mixing barrel 4, and a water pump for pressurized transportation is fixedly installed on the water outlet pipe 5. A discharging system 6 is fixedly installed on the mixing barrel 4; a storage bin 7, which is fixedly installed above the support frame 1. An inlet 701 and a feed door 8 hinged to the inlet 701 are provided on the storage bin 7. A discharge outlet 702 is provided at the bottom of the storage bin 7, and a blanking bin 9 that can be hermetically connected to the discharge outlet 702 is welded on the support frame 1; a metering mechanism, which is arranged below the storage bin 7 and is used to convey the bentonite in the storage bin 7 into the mixing barrel 4 after metering and weighing; a mixing mechanism, which is arranged inside the mixing barrel 4 and is used to mix the bentonite and water introduced into the mixing barrel 4.

[0036] In order to increase the safety of the device and the protection of workers, a guardrail is fixedly installed on the top of the storage bin 7.

[0037] In order to ensure the sufficiency of the water source and the safety of the water pump during the mixing of bentonite, a liquid level alarm is fixedly installed in the water tank 3.

[0038] Refer to Figure 4 , where the discharging system 6 includes a mixing pump 601. A discharging pipe 602 is fixedly connected between the input end of the mixing pump 601 and the mixing barrel 4. The output end of the mixing pump 601 is fixedly connected to a three-way pipe 603 through a flange. A circulating pipe 604 is fixedly connected between the three-way pipe 603 and the mixing barrel 4. A first valve 605 is fixedly installed on the circulating pipe 604. The other outlet end of the three-way pipe 603 is fixedly connected to a conveying pipe 606, and a second valve 607 is fixedly installed on the conveying pipe 606.

[0039] Among them, the model of the water pump is 150QJ10-50\7, and the model of the mixing pump 601 is HBT60.13.90SG. Both of these are existing mature technologies, so no further description will be given; and the water pump and the mixing pump 601 are effectively electrically connected to the control room 2 through an existing technology controller;

[0040] With the above structure set up, the bentonite in the storage bin 7 enters the metering mechanism. After being weighed, when the set weight is reached, the conveying stops. At the same time, the first valve 605 and the second valve 607 at the outlet of the mixing pump 601 are closed, and the water pump pressurizes and conveys the water in the water tank 3 into the mixing barrel 4. When the set weight is reached, the water pump stops working. After the water and bentonite are metered, the first valve 605 is opened and the second valve 607 is closed. The mixing pump 601 is started. At the same time, the bentonite in the metering mechanism enters the mixing barrel 4 and is stirred and mixed with the high-speed circulating water; after the stirring is completed, the first valve 605 is closed and the second valve 607 is opened, and the material is discharged from the conveying pipe 606.

[0041] Refer to Figures 5 - 6 , where the metering mechanism includes: a metering hopper 10 with openings at both ends. Through holes 1001 are provided at the four corners of the metering hopper 10. A support rod 11 is slidably installed in any one of the through holes 1001. One end of the support rod 11 is fixedly connected to the bottom of the storage bin 7, and the other end of the support rod 11 is fixedly installed with a first weighing sensor 12; a spring 13 is movably installed on the support rod 11, and both ends of the spring 13 are fixedly connected to the bottom of the storage bin 7 and the metering hopper 10 respectively; a cylinder 15 is fixedly installed on the metering hopper 10, and a baffle 16 is fixedly installed at the movable end of the cylinder 15. The baffle 16 is used to block the lower opening of the metering hopper 10; a conveying auger 14, the feeding end of the conveying auger 14 is hermetically connected to the discharging bin 9, and the discharging end of the conveying auger 14 is located inside the metering hopper 10.

[0042] Positioning seats 19 are fixedly installed on the opposite surfaces of the support frame 1 and the mixing barrel 4, and a second weighing sensor 20 is fixedly installed between the opposite positioning seats 19.

[0043] One end of the metering hopper 10 close to the mixing barrel 4 is fixedly installed with an L-shaped conveying box 17. The vertical section provided on the L-shaped conveying box 17 extends into the mixing barrel 4, and a first belt conveyor mechanism 18 is fixedly installed in the vertical section provided on the L-shaped conveying box 17.

[0044] Among them, the conveying auger 14 includes a housing, an internal screw, and a motor. The transmission shaft of the screw is fixedly connected to the output end of the motor through a coupling. The material is pushed out by the rotation of the screw. A vibrator is fixedly installed on the outer wall of the discharging bin 9, and the bentonite in the discharging bin 9 is affected by the vibrator so as to be evenly discharged into the conveying auger 14.

[0045] Among them, the model of the cylinder 15 is SMC CDJ2B32-500B, and the models of the first weighing sensor 12 and the second weighing sensor 20 are QS-5t. These three are all existing mature technologies, so no further description will be given; and the cylinder 15, the first weighing sensor 12, and the second weighing sensor 20 are effectively electrically connected to the control room 2 through an existing technology controller.

[0046] With the above - mentioned structure, bentonite is transferred from the blanking bin 9 to the metering hopper 10 by the conveying auger 14. As the bentonite increases, the weight of the metering hopper 10 gradually becomes heavier, and the spring 13 is compressed by the force, causing the metering hopper 10 to contact the first weighing sensor 12. When the set weight is reached, the conveying auger 14 stops conveying. At the same time, the water pump pressurizes and conveys the water in the water tank 3 into the mixing barrel ④, and at the same time, the second weighing sensor 20 at the bottom of the mixing barrel 4 measures. When the set weight is reached, the water pump stops working. After the water and bentonite are metered, the first valve 605 is opened, the second valve 607 is closed, and the mixing pump 601 is started. At the same time, the air cylinder 15 pushes the baffle 16 to expose the lower opening of the metering hopper 10, and the bentonite in the metering hopper 10 falls onto the first belt conveyor 18 and then is sent into the mixing barrel 4, and then is mixed with the high - speed circulating water. On the one hand, the bentonite and water are circulated between the discharge system 6 and the mixing barrel 4 under the influence of the mixing pump 601, increasing the uniformity of the mixing of bentonite and water. On the other hand, the separate metering of bentonite and water is accurate and reliable, reducing the error of over - weighing caused by the high - speed impact of water flow. It is beneficial to improve the accuracy of the ratio and improve economic benefits.

[0047] Refer to Figures 7 - 8 , in which the mixing mechanism includes: a deflector 25, a gas chamber 2503 is fixedly installed at the axis of the deflector 25, inclined tubes 2501 and openings 2502 are arranged along the circumference on the plate surface of the deflector 25, the inclined tubes 2501 are communicated with the gas chamber 2503, and the inclined tubes 2501 and the openings 2502 are arranged alternately; a double - layer grille 23, a first connecting shaft 24 is coaxially and fixedly installed inside the double - layer grille 23, the first connecting shaft 24 is rotationally connected with the deflector 25, a ring groove 2301 is opened on one side of the double - layer grille 23 close to the deflector 25, a guide rod 26 is slidably installed in the ring groove 2301, and the guide rod 26 is fixedly connected with the deflector 25.

[0048] An air compressor 21 is fixedly installed on the support frame 1, the output end of the air compressor 21 is fixedly connected with an air pipe 22, and one end of the air pipe 22 far from the air compressor 21 extends into the L - shaped conveying box 17 and the gas chamber 2503; an air outlet 2201 is opened on the pipe wall of the air pipe 22 located in the L - shaped conveying box 17.

[0049] Among them, the inner bottom surface of the groove of the ring groove 2301 is wavy, so that the deflector 25 swings up and down under the push of the guide rod 26 when rotating.

[0050] Among them, the connection point of the deflector 25 and the first connecting shaft 24 is connected together through a ball seat and a universal ball, so as not to limit the up - and - down amplitude generated when the deflector 25 rotates.

[0051] With the above structure set, during stirring, part of the compressed gas generated in the air compressor 21 is ejected through the air outlet 2201 on the air pipe 22 to disperse the bentonite in the L-shaped conveying box 17, making it fall into the water in a powder mist state. At the same time, another part of the gas enters the air chamber 2503 and is dispersed into each inclined plane pipe 2501 and then ejected. The guide plate 25 rotates due to the recoil force of the inclined plane pipe 2501. The inner bottom surface of the groove of the annular groove 2301 is wavy. Thus, when the guide plate 25 rotates, it is pushed up and down by the guide rod 26, further increasing the contact with the object and improving the mixing performance of bentonite and water. Secondly, the gas ejected from the inclined plane pipe 2501 forms high-speed flowing bubbles in the mixture of bentonite and water. The bubbles can break up the agglomerated bentonite, increasing the uniformity of the slurry and greatly reducing the number of agglomerated powder particles.

[0052] Embodiment 2:

[0053] Refer to Figures 1 - 11 , which is basically the same as Embodiment 1. On the basis of Embodiment 1, the entire technical solution is further optimized.

[0054] Refer to Figure 9 and Figure 11 , a specific implementation scheme for improving the feeding efficiency of bentonite is added, and it also includes: a moving frame 27, the moving frame 27 is slidably installed on the storage bin 7 through a sliding mechanism; a hoisting arm 28, a second connecting shaft 2801 is fixedly installed on one side of the hoisting arm 28 close to the moving frame 27, the second connecting shaft 2801 is rotatably connected to the moving frame 27, and a winch 29 is fixedly installed on the hoisting arm 28; a bag-breaking rod 30, the bag-breaking rod 30 is fixedly installed on the storage bin 7, and a blade 3001 is fixedly installed on the bag-breaking rod 30.

[0055] In this embodiment, the type of the sliding mechanism is not limited. It can be an electric telescopic rod, a pneumatic telescopic rod, and a crank-slider mechanism, etc., which can meet the linear reciprocating motion mechanism. Preferably, the sliding mechanism includes a second motor 40, a transmission shaft 38, and two symmetrically arranged guide rails 36. A roller 37 adapted to the guide rail 36 is rotatably installed on the moving frame 27. Sprockets 39 are rotatably connected to both ends of the opposite surfaces of the two guide rails 36. A chain is tensioned between the sprockets 39 at both ends. Both ends of the transmission shaft 38 are fixedly connected to the corresponding sprockets 39 on both sides. The second motor 40 is used to drive the transmission shaft 38 to rotate, and the moving direction of the moving frame 27 between the two guide rails 36 is controlled by the forward and reverse rotation of the second motor 40.

[0056] A first motor 31 is fixedly installed on the moving frame 27. A worm 33 is fixedly installed at the output end of the first motor 31. A worm gear 32 is fixedly installed on the second connecting shaft 2801. The worm 33 is meshed with the worm gear 32.

[0057] A second belt conveyor mechanism 34 and a third belt conveyor mechanism 35 are rotatably installed in the storage bin 7. The conveying distance of the second belt conveyor mechanism 34 is half of that of the third belt conveyor mechanism 35. The driving directions of the second belt conveyor mechanism 34 and the third belt conveyor mechanism 35 are opposite. A bag outlet 703 is provided on the side wall of one side of the storage bin 7, and the bag outlet 703 is flush with the third belt conveyor mechanism 35.

[0058] With the above structure, the bagged bentonite is lifted by the hoist 29 and moved onto the storage bin 7. The hoisting arm 28 can rotate 360° and move under the drive of the first motor 31 and the second motor 40 to meet the feeding direction of the bagged bentonite, which greatly facilitates the powder loading operation on site. Therefore, in order to cooperate with the mobile frame 27, two feeding ports 701 are provided, which improves the feeding efficiency. At the same time, when the bagged bentonite passes through the bag-breaking rod 30, it is cut by the blade 3001. When the internal bentonite falls through the feeding port 701 close to the second belt conveyor mechanism 34, the bentonite and the broken bag first fall on the second belt conveyor mechanism 34. Since the conveying distance of the second belt conveyor mechanism 34 is half of that of the third belt conveyor mechanism 35, part of the bentonite and the broken bag fall on the third belt conveyor mechanism 35, and then the bentonite falls into the feeding bin 9, while the damaged bag is transported out from the bag outlet 703 under the third belt conveyor mechanism 35, realizing the separation of materials, improving the intelligence of the powder loading operation, and reducing the labor cost.

[0059] It should be noted that the structures of the first belt conveyor mechanism 18, the second belt conveyor mechanism 34 and the third belt conveyor mechanism 35 are the same, and each includes two rollers, a belt tensioned between the two rollers, and a motor for driving the rollers to do work. However, the difference is that the belts in the second belt conveyor mechanism 34 and the third belt conveyor mechanism 35 are provided with mesh holes through which the bentonite can flow, thereby realizing the separation between the material and the packaging bag.

[0060] Here, the working principle of the above device is further summarized;

[0061] First, the bagged bentonite is lifted by the hoist 29 and moved onto the storage bin 7. When it passes through the bag-breaking rod 30, it is cut by the blade 3001. The internal bentonite falls into the feeding bin 9 through the second belt conveyor mechanism 34 and the third belt conveyor mechanism 35, while the damaged bag is transported out from the bag outlet 703 under the third belt conveyor mechanism 35;

[0062] Secondly, the bentonite in the blanking bin 9 is transferred into the metering hopper 10 through the conveying auger 14. As the bentonite increases, the weight of the metering hopper 10 gradually becomes heavier. The spring 13 is compressed by the force, causing the metering hopper 10 to contact the first weighing sensor 12. When the set weight is reached, the conveying auger 14 stops conveying. At the same time, the water pump pressurizes and conveys the water in the water tank 3 into the mixing barrel 4, and the second weighing sensor 20 at the bottom of the mixing barrel 4 measures the weight. When the set weight is reached, the water pump stops working.

[0063] Next, the first valve 605 is opened, the second valve 607 is closed, and the mixing pump 601 is started. At the same time, the air cylinder 15 pushes the baffle 16 to expose the lower end opening of the metering hopper 10. The bentonite in the metering hopper 10 falls onto the first belt conveyor 18. A part of the compressed gas generated in the air compressor 21 is ejected through the air outlet 2201 on the air pipe 22 to blow the bentonite in the L-shaped conveying box 17 into a powder mist and make it fall into the water, and then be stirred and mixed with the high-speed circulating water.

[0064] Then, a part of the gas enters the air chamber 2503 and is dispersed into each inclined tube 2501 and ejected. The guide plate 25 rotates under the recoil force of the inclined tube 2501. The inner bottom surface of the groove of the annular groove 2301 is wavy. Therefore, when the guide plate 25 rotates, it is pushed up and down by the guide rod 26, further increasing the contact with the object and improving the mixing performance of the bentonite and water. Secondly, the gas ejected from the inclined tube 2501 forms high-speed flowing bubbles in the mixture of bentonite and water. The bubbles can break up the agglomerated bentonite and increase the uniformity of the slurry.

[0065] Finally, the uniformly mixed material is discharged from the feed pipe 606.

[0066] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A combined weighing device for a bentonite mixing station, characterized in that: include: A support frame (1), wherein a control room (2), a water tank (3) and a stirring barrel (4) are fixedly installed in the support frame (1), a water outlet pipe (5) is fixedly connected between the water tank (3) and the stirring barrel (4), and a discharge system (6) is fixedly installed on the stirring barrel (4); A material storage bin (7), the material storage bin (7) is fixedly mounted above the support frame (1), the material storage bin (7) is provided with a feed port (701) and a feed door (8) hingedly mounted to the feed port (701), a discharge port (702) is provided at the bottom of the material storage bin (7), and a lower material bin (9) is welded to the support frame (1) and can be sealed with the discharge port (702); A quantitative mechanism is provided below the storage bin (7) and is used to transport the bentonite in the storage bin (7) into the mixing barrel (4) after being weighed; A stirring mechanism is provided in the stirring barrel (4), and is used for stirring and mixing the bentonite and water introduced into the stirring barrel (4).

2. The combined weighing device of a bentonite mixing station according to claim 1, characterized in that: The discharging system (6) comprises a stirring pump (601), a discharging pipe (602) is fixedly connected between the input end of the stirring pump (601) and the stirring barrel (4), a tee pipe (603) is fixedly connected to the output end of the stirring pump (601) via a flange, a circulation pipe (604) is fixedly connected between the tee pipe (603) and the stirring barrel (4), a first valve (605) is fixedly installed on the circulation pipe (604), and the other outlet end of the tee pipe (603) is fixedly connected to a delivery pipe (606), and a second valve (607) is fixedly installed on the delivery pipe (606).

3. The combined weighing device of a bentonite mixing station according to claim 1, characterized in that: The quantitative mechanism includes: A measuring hopper (10) with openings at both ends, wherein through holes (1001) are provided at the four corners of the measuring hopper (10), a support rod (11) is slidably installed in any of the through holes (1001), one end of the support rod (11) is fixedly connected to the bottom of the storage bin (7), and the other end of the support rod (11) is fixedly installed with a first weighing sensor (12); A spring (13) is movably mounted on the support rod (11), and both ends of the spring (13) are fixedly connected to the bottom of the storage bin (7) and the metering hopper (10) respectively; A cylinder (15) is fixedly mounted on the measuring hopper (10), and a baffle (16) is fixedly mounted on the movable end of the cylinder (15), and the baffle (16) is used to block the lower end opening of the measuring hopper (10); A conveying auger (14), wherein the feeding end of the conveying auger (14) is sealedly connected to the lower bin (9), and the discharging end of the conveying auger (14) is located in the metering hopper (10).

4. The combined weighing device of a bentonite mixing station according to claim 3, characterized in that: Positioning seats (19) are fixedly mounted on the opposing surfaces of the support frame (1) and the mixing barrel (4), and a second weighing sensor (20) is fixedly mounted between the positioning seats (19).

5. The combined weighing device of a bentonite mixing station according to claim 3, characterized in that: An L-shaped conveying box (17) is fixedly installed on one end of the measuring hopper (10) close to the mixing barrel (4), a vertical section provided on the L-shaped conveying box (17) extends into the mixing barrel (4), and a first belt conveying mechanism (18) is fixedly installed in the vertical section provided on the L-shaped conveying box (17).

6. The combined weighing device of a bentonite mixing station according to claim 5, characterized in that: The stirring mechanism comprises: A guide plate (25), wherein an air chamber (2503) is fixedly installed at the axis of the guide plate (25), and a bevel tube (2501) and an opening (2502) are arranged along the circumference of the plate surface of the guide plate (25), the bevel tube (2501) is connected to the air chamber (2503), and the bevel tube (2501) and the opening (2502) are alternately arranged; A double-layer grille (23) is coaxially fixedly installed with a first connecting shaft (24) in the double-layer grille (23), the first connecting shaft (24) is rotatably connected to the guide plate (25), and a ring groove (2301) is provided on a side of the double-layer grille (23) close to the guide plate (25), a guide rod (26) is slidably installed in the ring groove (2301), and the guide rod (26) is fixedly connected to the guide plate (25).

7. The combined weighing device of a bentonite mixing station according to claim 6, characterized in that: An air compressor (21) is fixedly mounted on the support frame (1), an output end of the air compressor (21) is fixedly connected to an air pipe (22), and an end of the air pipe (22) away from the air compressor (21) extends to the L-shaped delivery box (17) and the air chamber (2503); The air pipe (22) is located in the L-shaped delivery box (17) and is provided with an air outlet (2201) on its wall.

8. The combined weighing device of a bentonite mixing station according to claim 1, characterized in that: Also includes: A movable frame (27), wherein the movable frame (27) is slidably mounted on the storage bin (7) via a sliding mechanism; A hoisting arm (28), wherein a second connecting shaft (2801) is fixedly mounted on a side of the hoisting arm (28) close to the movable frame (27), the second connecting shaft (2801) is rotatably connected to the movable frame (27), and a winch (29) is fixedly mounted on the hoisting arm (28); A bag-breaking rod (30) is fixedly mounted on the storage bin (7), and a blade (3001) is fixedly mounted on the bag-breaking rod (30).

9. The combined weighing device of a bentonite mixing station according to claim 8, characterized in that: A first motor (31) is fixedly mounted on the movable frame (27), a worm (33) is fixedly mounted on the output end of the first motor (31), a worm wheel (32) is fixedly mounted on the second connecting shaft (2801), and the worm (33) is meshedly connected with the worm wheel (32).

10. The combined weighing device of a bentonite mixing station according to claim 9, characterized in that: A second belt conveyor mechanism (34) and a third belt conveyor mechanism (35) are rotatably installed in the storage bin (7). The conveying distance of the second belt conveyor mechanism (34) is half of that of the third belt conveyor mechanism (35). The transmission directions of the second belt conveyor mechanism (34) and the third belt conveyor mechanism (35) are opposite. A bag outlet (703) is provided on a side wall of one side of the storage bin (7). The bag outlet (703) is flush with the third belt conveyor mechanism (35).

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