Coal water pump truck capable of continuously metering and conveying

Abstract

The invention discloses a coal water pump truck capable of continuously metering and conveying. The coal water pump truck comprises a workbench, a metering mechanism and a circulating feeding mechanism, a hydraulic control center is fixedly connected to the left side of the workbench, a controller is fixedly connected to the left side of the hydraulic control center, a temporary storage bin is fixedly connected to the right side of the upper surface of the workbench, a water supplementing tank is arranged on the front side of the workbench, a coal water pump is connected to the lower left side of the temporary storage bin in series, and a discharging port of the coal water pump is connected with a coal-water mixture discharging pipeline. A water supplementing pipe is arranged between the upper side of the water supplementing tank and the left side of the temporary storage bin, a floating ball valve is connected to the middle of the water supplementing pipe in series, and the right side of the water supplementing pipe is communicated with the left lower side of the interior of the temporary storage bin through a flow dividing pipe; a water inlet pipe is arranged on the left side of the upper surface; the uninterrupted metering and conveying coal water pump truck realizes uninterrupted work of the pump truck, and is good in continuity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal water supply, in particular to an uninterrupted metering and conveying coal water pump truck. BACKGROUND

[0002] The coal water car is a special vehicle connected to the rear of the steam locomotive, which bears the functions of loading coal, water, grease and other fuels, and storing locomotive tools and spare parts; In the prior art, the patent with the authorized publication number CN221506846U discloses a coal water conveying and coal residue metering pump truck, which comprises a water tank, a crushing mechanism, a liquid inlet pipeline and a liquid outlet pipeline. Because the concentration of coal water mixture fluctuates greatly, and coal particles are prone to sedimentation, the conventional use of concentration meters and flow meters is prone to distortion, and cannot measure continuously. On the other hand, the above-mentioned coal residue metering pump truck also has some problems during use, such as long-term operation, adhesion of materials on the inner wall, which may cause errors in the measurement of the concentration sensor, and manual disassembly and cleaning are required, which is not continuous, and the supply of materials is not timely, which may cause the slurry pump to idle, therefore, we propose an uninterrupted metering and conveying coal water pump truck. SUMMARY

[0003] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide an uninterrupted metering and conveying coal water pump truck, which realizes uninterrupted operation of the pump truck, has good continuity, and can effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an uninterrupted metering and conveying coal water pump truck, comprising a workbench, a metering mechanism and a circulating feeding mechanism. The left side of the workbench is fixedly connected with a hydraulic control center, the left side of the hydraulic control center is fixedly connected with a controller, the upper surface of the right side of the workbench is fixedly connected with a temporary storage bin, the front side of the workbench is provided with a water replenishing tank, the lower left side of the temporary storage bin is connected in series with a coal water pump, the discharge port of the coal water pump is connected with a coal water mixture discharge pipeline, the middle part of the coal water mixture discharge pipeline is provided with a backwater bypass, the right side of the backwater bypass is connected with the left side of the temporary storage bin, the upper surface of the left side of the water replenishing tank is provided with a water inlet pipe, the middle part of the water inlet pipe is connected in series with a pressure reducing valve, the left side of the water inlet pipe is externally connected with a coal mine water supply pipeline, the left side of the water replenishing tank is externally connected with a coal mine water supply pipeline, the upper side of the water replenishing tank and the left side of the temporary storage bin are connected with a water replenishing pipe, the middle part of the water replenishing pipe is connected in series with a float valve, the right side of the water replenishing pipe is connected with the left lower side of the inside of the temporary storage bin through a shunt pipe, the input ends of the float valve, the pressure reducing valve and the coal water pump are electrically connected with the output end of the controller, and the input end of the controller is electrically connected with an external power supply. The metering mechanism is symmetrically arranged on the right side of the workbench and is used for metering the coal content in the coal water mixture. The circulating feeding mechanism is arranged on the upper right side of the workbench and is used for circulating feeding of the symmetrically arranged metering mechanism, so that the pump truck can work continuously and has good continuity.

[0005] Further, the upper surface of the workbench is fixedly connected with an upper mounting frame, so as to realize the functions of fixedly mounting the metering device and the feeding device.

[0006] Further, the circulating feeding mechanism comprises a right mounting frame, a shunt feeding pipe, a shunt coal water mixture discharge pipeline, a fixed arm, a front rotating seat, a rotating frame, a rotating shaft, a turnover plate and a shunt cylinder, the right mounting frame is fixedly connected to the upper surface of the right side of the upper mounting frame, the upper surface of the right mounting frame is provided with the shunt feeding pipe, the right side of the shunt feeding pipe is externally connected with an external feeding device, the left side of the shunt feeding pipe is fixedly connected with the shunt coal water mixture discharge pipeline, the middle part of the shunt coal water mixture discharge pipeline is rotatably connected with the rotating shaft, the lower end of the rotating shaft is fixedly connected with the turnover plate, the upper end of the rotating shaft is fixedly connected with the rotating frame, the front end of the shunt coal water mixture discharge pipeline is fixedly connected with the fixed arm, the upper surface of the front side of the fixed arm is fixedly connected with the front rotating seat, the inside of the front rotating seat is rotatably connected with the shunt cylinder, the telescopic end of the shunt cylinder is rotatably connected with the front side of the rotating frame, the oil inlet and the oil outlet of the shunt cylinder are connected with the oil inlet and the oil outlet of the hydraulic control center through an oil conveying pipe, the input end of the reversing valve on the shunt cylinder is electrically connected with the output end of the controller, so as to realize the function of intermittent feeding between the two shunt ports.

[0007] Furthermore, the front side and the rear side of the workbench are respectively symmetrically fixedly connected with jacking hydraulic cylinders, and the telescopic ends of the jacking hydraulic cylinders are fixedly connected with rubber feet. The oil inlets and oil outlets of the four jacking hydraulic cylinders are also respectively connected to the oil inlet and oil outlet of the hydraulic control center through oil pipes. The input ends of the reversing valves on the four jacking hydraulic cylinders are respectively electrically connected to the output ends of the controller to realize the function of jacking and fixing the pump truck.

[0008] Furthermore, it also includes a metering mechanism, which includes a weighing box, an opening and closing drive cylinder and a lower side plate. The weighing box is fixedly connected to the inner right side of the upper mounting frame through a weighing mounting frame in a front-to-back symmetrical manner. The lower ends of the two weighing boxes are hinged to the lower side plates through hinges, and dehydration holes are provided on the lower side plates. The upper sides of the left and right sides of the two weighing boxes are respectively connected to the opening and closing drive cylinders in a front-to-back symmetrical manner. The telescopic ends of the eight opening and closing drive cylinders are respectively connected to the middle part of the lower side plate corresponding to the vertical position. The air inlets and air outlets of the eight opening and closing drive cylinders are respectively connected to external air pumps to realize the weighing function.

[0009] Furthermore, a hollow skeleton bin is connected to the weighing box through a shock-absorbing base, a carbon steel screen is provided on the hollow skeleton bin, a vibration pump is connected to the hollow skeleton bin through a mounting frame, and a weighing sensor is fixedly connected to the weighing box.

[0010] Furthermore, a hydraulically driven crawler is fixedly connected to the upper surface of the workbench, and the oil inlet and oil outlet of the hydraulic motor inside the hydraulically driven crawler are respectively connected to the oil inlet and oil outlet of the hydraulic control center through oil pipelines to control the movement of the pump truck.

[0011] Furthermore, the flip plate is a semicircular plate, and a fixed semicircular plate is provided in the middle of the diversion feed pipe. The semicircular plate and the fixed semicircular plate can form a complete circular plate to achieve the function of sealing and opening the coal-water mixture discharge pipe.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the coal-water pump truck with uninterrupted metering and delivery has the following advantages: 1. When the coal and water materials in the temporary storage bin reach the preset remaining threshold, water can be added to the temporary storage bin to prevent the coal and water pump from idling and burning dry. At the same time, the water supply mechanism also has the function of stirring and flushing. The water supply mechanism supplies water to the temporary storage bin through high pressure. The high pressure of the water can stir the materials inside the temporary storage bin and flush the temporary storage bin at the same time, achieving multiple goals at one stroke.

[0013] 2, coal water material through the feed end into one of the distribution pipeline into the corresponding metering bin, when the metering bin material reaches the predetermined threshold, the metering bin opens the material into the temporary storage bin, the cylinder pushes a turnover push plate inside the feed end to move, so that the push plate turns and the material enters another distribution pipeline, the cylinder pushes the turnover push plate to realize the circulation of two metering bins, realizes the uninterrupted work of the pump truck, the continuity is good. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic view of the structure of the present application; Figure 2 is a schematic view of the structure of the present application; Figure 3 is a schematic view of the structure of the present application; Figure 4 is a schematic view of the structure of the present application; Figure 5 is a schematic view of the structure of the present application; Figure 6 is a schematic view of the structure of the present application;

[0015] In the figure: 1 workbench, 2 hydraulic drive caterpillar, 3 temporary storage bin, 4 water supplement tank, 5 floating ball valve, 6 upper mounting bracket, 7 pressure reducing valve, 8 circulation feeding mechanism, 81 right mounting bracket, 82 shunt feeding pipe, 83 shunt coal water mixture discharge pipeline, 84 fixed arm, 85 front side rotating seat, 86 rotating frame, 87 rotating shaft, 88 turnover plate, 89 shunt cylinder, 9 metering mechanism, 91 weighing box, 92 opening and closing driving cylinder, 93 lower side plate, 10 coal water mixture discharge pipeline, 11 water supplement pipe, 12 hydraulic control center, 13 jacking hydraulic cylinder, 14 controller, 15 backwater bypass. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0017] Please refer to Figures 1-6 The present embodiment provides a technical solution: a coal water pump truck for uninterrupted metering and conveying, comprising a workbench 1 and a circulation feeding mechanism 8. The workbench 1 is fixedly connected with a hydraulic control center 12 on the left side, and the left side of the hydraulic control center 12 is fixedly connected with a controller 14. The upper surface of the workbench 1 is fixedly connected with a temporary storage bin 3 on the right side. The front side of the workbench 1 is provided with a water supplement tank 4. The lower left side of the temporary storage bin 3 is connected in series with a coal-water pump. The discharge port of the coal-water pump is connected with a coal-water mixture discharge pipeline 10. The middle part of the coal-water mixture discharge pipeline 10 is provided with a backwater bypass 15. The backwater bypass 15 is used to stabilize the discharge flow of the coal-water mixture, to ensure that the total flow flowing into the temporary storage bin 3 is always not less than the “minimum safety flow”, and to fundamentally protect the coal-water pump. The right side of the backwater bypass 15 is in communication with the left side of the temporary storage bin 3. The upper surface of the water supplement tank 4 is provided with an inlet pipe on the left side. The middle part of the inlet pipe is connected in series with a pressure reducing valve 7. The left side of the inlet pipe is externally connected with a coal mine water supply pipeline. The upper side of the water supplement tank 4 is provided with a water supplement pipe 11 between the left side of the temporary storage bin 3. The middle part of the water supplement pipe 11 is connected in series with a float valve 5. The right side of the water supplement pipe 11 is in communication with the left lower side of the inside of the temporary storage bin 3 through a shunt pipeline. The shunt pipeline extends into the inside of the temporary storage bin 3 and penetrates to the other side of the temporary storage bin 3. The end of the shunt pipeline is provided with a plurality of water outlet holes in the temporary storage bin 3. The water outlet holes are used to supplement water to the temporary storage bin and realize the flushing function at the same time. The input ends of the float valve 5, the pressure reducing valve 7 and the coal-water pump are respectively electrically connected with the output ends of the controller 14. The input end of the controller 14 is electrically connected with an external power supply. The upper surface of the workbench 1 is fixedly connected with an upper mounting frame 6. The front side and the rear side of the workbench 1 are respectively and symmetrically fixedly connected with top lifting hydraulic cylinders 13. The telescopic ends of the top lifting hydraulic cylinders 13 are fixedly connected with rubber pads. The oil inlets and the oil outlets of the four top lifting hydraulic cylinders 13 are also respectively in communication with the oil inlets and the oil outlets of the hydraulic control center 12 through oil supply pipelines. The input ends of the reversing valves on the four top lifting hydraulic cylinders 13 are respectively electrically connected with the output ends of the controller 14. The upper surface of the workbench 1 is fixedly connected with a hydraulic drive caterpillar belt 2. The oil inlets and the oil outlets of the hydraulic motors in the hydraulic drive caterpillar belt 2 are respectively in communication with the oil inlets and the oil outlets of the hydraulic control center 12 through oil supply pipelines. The hydraulic control center 12 is manually controlled. The hydraulic drive caterpillar belt 2 is controlled to operate, so that the coal-water pump car is moved to a specified position. After that, the controller 14 and the hydraulic control center 12 are controlled. The telescopic ends of the four top lifting hydraulic cylinders 13 are elongated, and the coal-water pump car is lifted. At this time, the controller 14 controls the coal-water pump to pump out the coal-water material through the coal-water mixture discharge pipeline 10 and send it to the next process. During this period, when the remaining amount of the coal-water material in the temporary storage bin 3 reaches the predetermined threshold value, the float valve 5 will operate. The water in the water supplement tank 4 is high-pressure extruded into the inside of the temporary storage bin 3, so that the water in the temporary storage bin 3 can be supplemented and flushed in time, to prevent the coal-water pump 7 from idling and burning out. The front and rear weighing tanks 91 will alternately discharge the coal-water material into the temporary storage bin 3. The water enters the water supplement tank 4 after the water pressure is reduced by the pressure reducing valve 7. The temporary storage bin 3 is provided with a liquid level sensor (the liquid level sensor needs to be bidirectionally electrically connected with the controller 14, and a conventional float liquid level sensor is selected. When the liquid level rises,The float ball rises and triggers a switch or sensor through a mechanical linkage or magnetic coupling, thereby outputting a liquid level signal. When the water level in the temporary storage bin 3 is too low, the liquid level sensor controls the float ball valve 5 to open and send water into the temporary storage bin 3 through the water replenishment pipeline. The end of the water replenishment pipeline extends into the interior of the temporary storage bin 3, and a plurality of water outlet holes are formed in the portion of the water replenishment pipeline that extends into the bottom of the temporary storage bin 3. The water outlet holes can be used to clean the temporary storage bin 3. In addition, it should be noted that the water entering the water replenishment tank 4 has been depressurized by the pressure reducing valve 7, but still has high pressure. The high pressure can replenish water to the temporary storage bin 3, achieving the functions of water replenishment and flushing. The circulating feeding mechanism 8 is arranged on the right upper side of the workbench 1. The circulating feeding mechanism 8 includes a right mounting frame 81, a shunt feeding pipe 82, a shunt coal-water mixture discharge pipeline 83, a fixed arm 84, a front rotating seat 85, a rotating frame 86, a rotating shaft 87, a turnover plate 88, and a shunt cylinder 89. The right mounting frame 81 is fixedly connected to the upper surface of the upper mounting frame 6 on the right side. The upper surface of the right mounting frame 81 is provided with the shunt feeding pipe 82. The right side of the shunt feeding pipe 82 is externally connected to an external feeding device. The left side of the shunt feeding pipe 82 is fixedly connected with the shunt coal-water mixture discharge pipeline 83. The middle part of the shunt coal-water mixture discharge pipeline 83 is rotatably connected with the rotating shaft 87. The outer arc surface of the rotating shaft 87 is fixedly connected with the turnover plate 88. The upper end of the rotating shaft 87 is fixedly connected with the rotating frame 86. The front end of the shunt coal-water mixture discharge pipeline 83 is fixedly connected with the fixed arm 84. The upper surface of the fixed arm 84 is fixedly connected with the front rotating seat 85 on the front side. The front rotating seat 85 is rotatably connected with the shunt cylinder 89 inside. The telescopic end of the shunt cylinder 89 is rotatably connected with the front side of the rotating frame 86. The gas inlet and outlet of the shunt cylinder 89 are connected in communication with an external compression pump through a gas pipe. The input end of the reversing valve on the shunt cylinder 89 is electrically connected to the output end of the controller 14. The turnover plate 88 is a semicircular plate. The middle part of the shunt feeding pipe 82 is provided with a fixed semicircular plate. The semicircular plate and the fixed semicircular plate can form a complete circular plate.

[0018] The metering mechanism 9 comprises a weighing box 91, an opening and closing drive cylinder 92 and a lower side plate 93. The weighing box 91 is fixedly connected to the inner right side of the upper side mounting frame 6 through a weighing mounting frame and is symmetrically arranged front and back. The lower ends of the two weighing boxes 91 are respectively hingedly connected with the lower side plate 93. The left side upper side and the right side upper side of the two weighing boxes 91 are respectively front and back symmetrically rotatably connected with the opening and closing drive cylinder 92. The extension ends of the eight opening and closing drive cylinders 92 are respectively rotatably connected with the middle part of the lower side plate 93 corresponding to the vertical position. The air inlet and the air outlet of the eight opening and closing drive cylinders 92 are respectively externally connected with an external air pump. At this time, the external feeding device can be adjusted and controlled. The water flow containing coal particles enters into the inner front side of the shunt coal-water mixture discharge pipeline 83 through the shunt feeding pipe 82. At this time, the front side coal-water mixture discharge pipeline of the shunt coal-water mixture discharge pipeline 83 is in communication with the shunt feeding pipe 82. At this time, the front side coal-water mixture discharge pipeline continuously discharges downward and is discharged into the inner part of the front side weighing box 91. When the weight in the weighing box 91 reaches the preset threshold value, it is necessary to switch to discharge the coal-water mixture into the inner part of the rear side weighing box 91. At this time, the controller 14 can be adjusted and controlled. The shunt cylinder 89 operates, the extension end of the shunt cylinder 89 is elongated, and the rotating frame 86 is pushed, so that the rotating frame 86 rotates counterclockwise by ninety degrees with the center of the rotating shaft 87 as the center. At this time, the turnover plate 88 rotates counterclockwise by ninety degrees with the center of the rotating shaft 87 as the center. At this time, the arc-shaped communication port communicates the shunt feeding pipe 82 with the rear discharge port of the shunt coal-water mixture discharge pipeline 83. At this time, the water flow containing coal particles is discharged into the inner part of the rear side weighing box 91. The pneumatic vibration pump in the weighing box 91 operates to generate a vibration force, thereby driving the high-frequency vibration of the hollow skeleton inner bin. The high-frequency vibration of the hollow skeleton inner bin dehydrates the coal-water mixture. At this time, the generated wastewater is discharged through the long strip dehydration hole. At this time, the hollow skeleton inner bin is only left with solid coal. At this time, the controller can be adjusted and controlled. The weighing sensor operates to measure the overall weight of the metering bin. After the measurement is completed, the solid coal in the metering bin needs to be discharged. The external air pump can be adjusted and controlled. The opening and closing drive cylinder 92 operates to rotate the rear end of the lower side plate 93 on the rear side of the hinge hinge point counterclockwise. The lower side plate 93 under the front side weighing box 91 is opened, and the coal particles in its inner part fall into the temporary storage bin 3.

[0019] The working principle of the coal-water pump vehicle for uninterrupted metering and conveying provided by the application is as follows: the manual control hydraulic control center 12 controls the operation of the hydraulic drive caterpillar 2, and then the coal-water pump vehicle moves to the designated position, and then the controller 14 and the hydraulic control center 12 are controlled, the extension ends of the four jacking hydraulic cylinders 13 are extended, and the coal-water pump vehicle is jacked up, at this time, the external feeding device can be controlled, the water flow containing coal particles enters the inside of the front side of the split coal-water mixture discharge pipe 83 through the split feeding pipe 82, at this time, the front side coal-water mixture discharge pipe of the split coal-water mixture discharge pipe 83 is in communication with the split feeding pipe 82, at this time, the front side coal-water mixture discharge pipe continuously discharges downward and is discharged into the inside of the front side weighing box 91, when the coal quality in the inside of the weighing box 91 reaches the specified quality, it needs to be switched to discharge the coal-water mixture into the inside of the rear side weighing box 91, at this time, the controller 14 is controlled, the split cylinder 89 operates, the extension end of the split cylinder 89 is extended, and then the rotating frame 86 is pushed, forcing the rotating frame 86 to rotate counterclockwise by 90 degrees with the center of the rotating shaft 87 as the center, at this time, the turnover plate 88 rotates counterclockwise by 90 degrees with the center of the rotating shaft 87 as the center, at this time, the arc-shaped communication port communicates the split feeding pipe 82 with the rear side discharge port of the split coal-water mixture discharge pipe 83, at this time, the water flow containing coal particles is discharged into the inside of the rear side weighing box 91, during this period, the lower side plate 93 on the lower side of the front side weighing box 91 is opened, and the coal material in the inside falls into the temporary storage bin 3, at this time, the controller 14 controls the coal-water pump, and the coal-water material is pumped out through the coal-water mixture discharge pipe 10 and sent to the next process, during this period, when the coal-water material in the temporary storage bin 3 reaches the remaining amount predetermined threshold value, the float ball valve 5 operates, the water in the inside of the water supplement tank 4 is pumped into the inside of the temporary storage bin 3, the water in the temporary storage bin 3 can be supplemented in time, the coal-water pump 7 is prevented from idling and burning out, at the same time, the water flow sent into the inside of the water supplement tank 4 by the pressure reducing valve 7 is high-pressure water flow, which can flush the inner wall of the temporary storage bin 3, and then the weighing boxes 91 on the front and rear sides alternately discharge the coal-water material into the temporary storage bin 3, and the uninterrupted work of the pump vehicle is realized.

[0020] As a supplementary embodiment of the application, a wear-resistant material layer, preferably a diamond coating, is coated on the contact surfaces of the rotating frame 86 and the rotating shaft 87; because the rotating frame 86 and the rotating shaft 87 need to overcome the resistance of the coal-water mixture during operation, long-term use can easily cause wear of the contact surfaces, and the wear-resistant layer of superhard material coated on the contact surfaces can improve the durability of the product.

[0021] As another embodiment of the application, the rotating shaft 87 is a hollow shaft, the inside of which is packaged with polypropylene non-woven fabric soaked with wear-resistant hydraulic oil, and oil infiltration holes are formed in the part of the rotating shaft 87 in contact with the rotating frame 86, so as to play a role in lubricating the contact surfaces of the rotating frame 86 and the rotating shaft 87, reducing wear, avoiding jamming, and ensuring smooth rotation.

[0022] It is worth noting that the controller 14 core chip selected in the above embodiment is a single-chip microcomputer, and the specific model is s7-300. The hydraulic drive caterpillar 2, the float ball valve 5, the pressure reducing valve 7, the coal water pump, the shunt cylinder 89, the opening and closing drive cylinder 92, the hydraulic control center 12 and the jacking hydraulic cylinder 13 can be freely configured according to the actual application scene. The hydraulic drive caterpillar 2 is recommended to be selected as the LDZ04 series hydraulic drive caterpillar. The float ball valve 5 is recommended to be selected as the 100X-16P type stainless steel remote control float ball valve. The pressure reducing valve 7 is selected as the Y43X pilot type pressure reducing valve. The coal water pump is recommended to be selected as the AH series slurry pump. The shunt cylinder 89 is recommended to be selected as the SMC series air cylinder. The hydraulic control center 12 is selected as the hydraulic station according to the above-mentioned number of oil cylinders. The jacking hydraulic cylinder 13 is recommended to be selected as the HSG type jacking hydraulic cylinder. The controller 14 controls the hydraulic drive caterpillar 2, the water pump 5, the coal water pump 7, the shunt cylinder 89, the hydraulic control center 12 and the jacking hydraulic cylinder 13 to work, which adopts the method commonly used in the prior art.

[0023] The above is only an embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields is also included in the patent protection range of the present application.

Claims

1. A coal-water pump truck with uninterrupted metering and delivery, characterized by: It includes a workbench (1), a metering mechanism (9) and a circulating feeding mechanism (8); The workbench (1) is fixedly connected to a hydraulic control center (12) on its left side, and a controller (14) is fixedly connected to the left side of the hydraulic control center (12). The right side of the upper surface of the workbench (1) is fixedly connected to a temporary storage bin (3). The front side of the workbench (1) is provided with a water supply tank (4). A coal-water pump is connected in series to the lower left side of the temporary storage bin (3). The discharge port of the coal-water pump is connected to a coal-water mixture discharge pipe (10). A return water bypass (15) is provided in the middle of the coal-water mixture discharge pipe (10). The right side of the return water bypass (15) is connected to the left side of the temporary storage bin (3). A water inlet pipe is provided on the left side of the upper surface of the water tank (4), a pressure reducing valve (7) is connected in series in the middle of the water inlet pipe, and the left side of the water inlet pipe is connected to the coal mine water supply pipeline. A water supply pipe (11) is provided between the upper side of the water supply tank (4) and the left side of the temporary storage bin (3), a float valve (5) is connected in series in the middle of the water supply pipe (11), and the right side of the water supply pipe (11) is connected to the lower left side of the interior of the temporary storage bin (3) through a shunt pipe. The input ends of the float valve (5), the pressure reducing valve (7) and the coal water pump are electrically connected to the output end of the controller (14) respectively, and the input end of the controller (14) is electrically connected to an external power supply. A metering mechanism (9) is symmetrically arranged on the right side of the workbench (1) and is used to measure the coal content in the coal-water mixture; Circular feeding mechanism (8): It is arranged on the upper right side of the workbench (1) and is used to circulate feeding to the symmetrically arranged metering mechanism (9).

2. The coal-water pump truck for uninterrupted metering and delivery according to claim 1, characterized in that: An upper mounting frame (6) is fixedly connected to the upper surface of the workbench (1).

3. The coal-water pump truck for uninterrupted metering and delivery according to claim 2, characterized in that: The circulating feeding mechanism (8) comprises a right side mounting frame (81), a diversion feeding pipe (82), a diversion coal-water mixture discharge pipe (83), a fixed arm (84), a front side rotating seat (85), a rotating frame (86), a rotating shaft (87), a flip plate (88) and a diversion cylinder (89), wherein the right side mounting frame (81) is fixedly connected to the right side of the upper surface of the upper side mounting frame (6), the upper surface of the right side mounting frame (81) is provided with a diversion feeding pipe (82), the right side of the diversion feeding pipe (82) is externally connected to an external feeding device, the left side of the diversion feeding pipe (82) is fixedly connected to the diversion coal-water mixture discharge pipe (83), the middle of the diversion coal-water mixture discharge pipe (83) is fixedly connected to the left side of the diversion feeding pipe (82), and the middle of the diversion coal-water mixture discharge pipe (83) is fixedly connected to the right side of the upper surface of the upper side mounting frame (6). The upper end of the rotating shaft (87) is fixedly connected to a rotating shaft (87), the outer arc surface of the rotating shaft (87) is fixedly connected to a turning plate (88), the upper end of the rotating shaft (87) is fixedly connected to a rotating frame (86), the front end of the coal-water mixture discharging pipe (83) is fixedly connected to a fixed arm (84), the front side of the upper surface of the fixed arm (84) is fixedly connected to a front side rotating seat (85), the inner part of the front side rotating seat (85) is rotatably connected to a diverter cylinder (89), the telescopic end of the diverter cylinder (89) is rotatably connected to the front side of the rotating frame (86), the air inlet and the air outlet of the diverter cylinder (89) are connected to an external compression pump through an air pipe, and the input end of the reversing valve on the diverter cylinder (89) is electrically connected to the output end of the controller (14).

4. The coal-water pump truck for uninterrupted metering and delivery according to claim 1, characterized in that: The front side and the rear side of the workbench (1) are respectively and symmetrically fixedly connected with a lifting hydraulic cylinder (13), and the telescopic ends of the lifting hydraulic cylinder (13) are all fixedly connected with rubber pads. The oil inlets and oil outlets of the four lifting hydraulic cylinders (13) are also respectively connected to the oil inlet and oil outlet of the hydraulic control center (12) through the oil pipeline. The input ends of the reversing valves on the four lifting hydraulic cylinders (13) are respectively electrically connected to the output ends of the controller (14).

5. The coal-water pump truck for uninterrupted metering and delivery according to claim 2, characterized in that: The metering mechanism (9) includes a weighing box (91), an opening and closing drive cylinder (92) and a lower side plate (93). The weighing box (91) is fixedly connected to the inner right side of the upper side mounting frame (6) through a weighing mounting frame in a front-to-back symmetrical manner. The lower ends of the two weighing boxes (91) are respectively hinged to the lower side plates (93) through hinges. The upper sides of the left and right sides of the two weighing boxes (91) are respectively connected to the opening and closing drive cylinders (92) in a front-to-back symmetrical rotation manner. The telescopic ends of the eight opening and closing drive cylinders (92) are respectively connected to the middle of the lower side plates (93) corresponding to the vertical positions. The air inlets and air outlets of the eight opening and closing drive cylinders (92) are respectively connected to external air pumps.

6. The coal-water pump truck for uninterrupted metering and delivery according to claim 1, characterized in that: The upper surface of the workbench (1) is fixedly connected to a hydraulic drive crawler (2), and the oil inlet and oil outlet of the hydraulic motor inside the hydraulic drive crawler (2) are respectively connected to the oil inlet and oil outlet of the hydraulic control center (12) through oil pipelines.

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