An uninterrupted metering and delivering coal water pump truck

Abstract

The utility model discloses an uninterrupted metering, conveying's coal water pump truck, including work table, metering mechanism and circulating feed mechanism, work table: its left side fixedly connected with hydraulic control center, the left side fixedly connected with controller of hydraulic control center, the upper surface right side fixedly connected with the temporary storage warehouse of work table, and the front side of work table is equipped with the water replenishing tank, and the left lower side of temporary storage warehouse is connected with coal water pump in series, and the discharge port of coal water pump is connected coal water mixture discharge pipeline, and the middle part of coal water mixture discharge pipeline is equipped with the water return bypass, and the right side of water return bypass is linked together with the left side of temporary storage warehouse, and the left side of temporary storage warehouse is equipped with the water replenishing pipe between the upper side of water replenishing tank, and the middle part of water replenishing pipe is connected with the ball valve in series, and the left lower side of inside of temporary storage warehouse is linked together through the shunt pipe with the right side of water replenishing pipe, and the upper surface left side of water replenishing tank is equipped with the water inlet pipe, and the uninterrupted metering, conveying's coal water pump truck realizes the uninterrupted work of pump truck, and the continuity is good.

Description

Technical Field

[0001] This utility model relates to the field of coal and water supply technology, specifically a coal and water pump truck that continuously measures and transports coal and water. Background Technology

[0002] The coal and water car is a special vehicle attached to the rear of a steam locomotive, which is responsible for loading fuels such as coal, water, and grease, as well as storing locomotive tools and spare parts. In the prior art, patent publication number CN221506846U discloses a coal-water conveying and coal slag metering pump truck, including a water tank, a crushing mechanism, an inlet pipe, and an outlet pipe; the crushing mechanism is installed on top of the water tank, with an opening at the top of the water tank corresponding to the location of the crushing mechanism; the crushing mechanism is connected to the inlet pipe, and the bottom of the crushing mechanism is a screen; the coal-water mixture entering the crushing mechanism through the inlet pipe enters the water tank through the screen and the top opening of the water tank; one end of the outlet pipe is located inside the water tank, and the other end is connected to the outside; a concentration meter and a flow meter are installed on the outlet pipe; Because the concentration of the coal-water mixture fluctuates greatly and coal particles are prone to sedimentation, conventional measurements using concentration meters and flow meters are easily distorted and cannot provide continuous measurement. On the other hand, the aforementioned coal slag metering pump truck also has some problems during use, such as material adhering to the inner wall during long-term operation, which may cause errors in the concentration sensor measurement, requiring manual disassembly and cleaning. It also has low continuity, and untimely material supply may cause the slurry pump to run dry. Therefore, we propose a coal-water pump truck that provides uninterrupted metering and transportation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a coal and water pump truck that can continuously measure and transport water, so as to realize the uninterrupted operation of the pump truck with good continuity, and effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coal and water pump truck for uninterrupted metering and conveying, comprising a workbench, a metering mechanism, and a circulating feeding mechanism; Workbench: A hydraulic control center is fixedly connected to its left side, and 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 replenishment tank is located on the front side of the workbench. A coal-water pump is connected in series on the lower left side of the temporary storage bin. The outlet of the coal-water pump is connected to a coal-water mixture discharge pipe. A return water bypass is located in the middle of the coal-water mixture discharge pipe. The right side of the return water bypass is connected to the left side of the temporary storage bin. A water inlet pipe is located on the left side of the upper surface of the water replenishment tank. A pressure reducing valve is connected in series in the middle of the water inlet pipe. The left side of the water inlet pipe is connected to the coal mine water supply pipe. A water replenishment pipe is located between the upper side of the water replenishment tank and the left side of the temporary storage bin. A float valve is connected in series in the middle of the water replenishment pipe. The right side of the water replenishment pipe is connected to the lower left side of the interior of the temporary storage bin through a diversion pipe. The input terminals of the float valve, pressure reducing valve, and coal-water pump are electrically connected to the output terminals of the controller. The input terminals of the controller are electrically connected to an external power supply. Measuring mechanism; it is symmetrically arranged on the right side of the workbench and is used to measure the coal content in the coal-water mixture; The circulating feeding mechanism is located on the upper right side of the workbench and is used to circulate feed to the symmetrically arranged metering mechanisms, so as to realize the uninterrupted operation of the pump truck and achieve good continuity.

[0005] Furthermore, an upper mounting bracket is fixedly connected to the upper surface of the workbench to realize the function of fixing and installing metering equipment and feeding equipment.

[0006] Furthermore, the circulating feeding mechanism includes a right-side mounting frame, a diversion feed pipe, a diversion coal-water mixture discharge pipe, a fixed arm, a front rotating seat, a rotating frame, a rotating shaft, a tilting plate, and a diversion cylinder. The right-side mounting frame is fixedly connected to the right side of the upper surface of the upper mounting frame. The upper surface of the right-side mounting frame is provided with a diversion feed pipe. The right side of the diversion feed pipe is externally connected to an external feeding device. The left side of the diversion feed pipe is fixedly connected to a diversion coal-water mixture discharge pipe. A rotating shaft is rotatably connected to the middle of the diversion coal-water mixture discharge pipe. The lower part of the rotating shaft... A flip plate is fixedly connected to the end of the rotating shaft, and a rotating frame is fixedly connected to the upper end of the shaft. A fixed arm is fixedly connected to the front end of the coal-water mixture discharge pipe. A front rotating seat is fixedly connected to the front side of the upper surface of the fixed arm. A diverting cylinder is rotatably connected inside the front rotating seat. The telescopic end of the diverting cylinder is rotatably connected to the front side of the rotating frame. The oil inlet and outlet of the diverting cylinder are connected to the oil inlet and outlet of the hydraulic control center through an oil supply pipe. The input end of the reversing valve on the diverting cylinder is electrically connected to the output end of the controller to realize the function of intermittent feeding from the two diverting ports.

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

[0008] Furthermore, it also includes a measuring mechanism, which includes a weighing box, a start / stop drive cylinder, and a lower side plate. The weighing box is symmetrically fixed to the right side of the upper mounting frame via a weighing mounting bracket. The lower ends of the two weighing boxes are respectively hinged to the lower side plates, which have dehydration holes. The upper left and right sides of the two weighing boxes are symmetrically rotatably connected to the start / stop drive cylinders. The extension and retraction ends of the eight start / stop drive cylinders are respectively rotatably connected to the middle of the lower side plates corresponding to the vertical positions. The air inlets and outlets of the eight start / stop drive cylinders are respectively externally connected to an external air pump to realize the weighing function.

[0009] Furthermore, a hollow frame chamber is connected to the weighing box via a shock-absorbing base. A carbon steel screen is installed on the hollow frame chamber. A vibration pump is connected to the hollow frame chamber via a mounting bracket. A weighing sensor is fixedly connected to the weighing box.

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

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

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This uninterrupted metering and conveying coal-water pump truck has the following advantages: 1. When the coal and water materials in the temporary storage bin reach the predetermined remaining amount threshold, water can be added to the temporary storage bin to prevent the coal and water pump from running dry. At the same time, the water replenishment mechanism also has the function of stirring and rinsing. The water replenishment mechanism replenishes 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 rinse the temporary storage bin at the same time, achieving multiple benefits in one go.

[0013] 2. Coal and water materials enter one of the distribution pipes through the feed end and enter the corresponding metering bin. When the material in the metering bin reaches the predetermined threshold, the metering bin opens and the material enters the temporary storage bin. The cylinder pushes a rotating push plate inside the feed end to rotate, so that the push plate rotates and the material enters another distribution pipe. The cylinder pushes the rotating push plate to realize the cyclic feeding of the two metering bins, so as to realize the uninterrupted operation of the pump truck and the good continuity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural schematic diagram of the circulating feeding mechanism of this utility model; Figure 3 This is an enlarged structural schematic diagram of point A of this utility model; Figure 4 This is a schematic diagram of the circulating feeding mechanism of this utility model; Figure 5 This is a front sectional view of the structure of this utility model; Figure 6 This is a schematic diagram of the metering mechanism structure of this utility model.

[0015] In the diagram: 1. Workbench, 2. Hydraulic drive track, 3. Temporary storage bin, 4. Water tank, 5. Float valve, 6. Upper mounting bracket, 7. Pressure reducing valve, 8. Circulating feeding mechanism, 81. Right side mounting bracket, 82. Diverting feed pipe, 83. Diverting coal-water mixture discharge pipe, 84. Fixed arm, 85. Front rotating seat, 86. Rotating frame, 87. Rotating shaft, 88. Tilting plate, 89. Diverting cylinder, 9. Metering mechanism, 91. Weighing box, 92. Opening and closing drive cylinder, 93. Lower side plate, 10. Coal-water mixture discharge pipe, 11. Water supply pipe, 12. Hydraulic control center, 13. Lifting hydraulic cylinder, 14. Controller, 15. Return water bypass. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This embodiment provides a technical solution: a coal-water pump truck that continuously measures and transports coal water, including a workbench 1 and a circulating feeding mechanism 8; Workbench 1: A hydraulic control center 12 is fixedly connected to its left side, and a controller 14 is fixedly connected to the left side of the hydraulic control center 12. A temporary storage bin 3 is fixedly connected to the right side of the upper surface of workbench 1. A water replenishment tank 4 is provided on the front side of workbench 1. A coal-water pump is connected in series on the lower left side of the temporary storage bin 3. The outlet 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 return water bypass 15 is used to stabilize the discharge flow of the coal-water mixture and ensure that the total flow into the temporary storage bin 3 is always not lower than the "minimum safe flow", thus fundamentally protecting the coal-water pump. 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 replenishment tank 4. A pressure reducing valve 7 is connected in series in the middle of the water inlet pipe. The left side of the workbench 1 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. 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 diversion pipe. The diversion pipe extends into the interior of the temporary storage bin 3 and passes through to the other side of the temporary storage bin 3. Several water outlets are opened at the end of the diversion pipe in the part of the temporary storage bin 3, which is used to replenish water to the temporary storage bin and realize the flushing function. 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. The input end of the controller 14 is electrically connected to an external power supply. An upper mounting bracket 6 is fixedly connected to the upper surface of the workbench 1. Lifting fluid is symmetrically fixedly connected to the front and rear sides of the workbench 1. The pressure cylinder 13, the lifting hydraulic cylinder 13, and the extension and retraction ends of the lifting hydraulic cylinder 13 are all fixedly connected to rubber pads. The oil inlet and outlet of the four lifting hydraulic cylinders 13 are also connected to the oil inlet and outlet of the hydraulic control center 12 through oil supply pipes. The input ends of the reversing valves on the four lifting hydraulic cylinders 13 are electrically connected to the output ends of the controller 14. The upper surface of the workbench 1 is fixedly connected to the hydraulic drive track 2. The oil inlet and outlet of the hydraulic motor inside the hydraulic drive track 2 are connected to the oil inlet and outlet of the hydraulic control center 12 through oil supply pipes. The hydraulic control center 12 is manually adjusted to control the operation of the hydraulic drive track 2, thereby moving the coal water pump truck. After reaching the designated position, the controller 14 and the hydraulic control center 12 can be adjusted. The telescopic ends of the four lifting hydraulic cylinders 13 extend, lifting the coal-water pump truck. At this time, the controller 14 controls the coal-water pump to extract the coal-water material through the coal-water mixture discharge pipe 10 and send it to the next process. During this period, when the coal-water material in the temporary storage bin 3 reaches the remaining predetermined threshold, the float valve 5 will operate, and the water in the water replenishment tank 4 will be squeezed into the temporary storage bin 3 under high pressure. This allows for timely replenishment and flushing of the temporary storage bin 3, preventing the coal-water pump 7 from running dry and burning out. The weighing boxes 91 on both the front and rear sides will alternately discharge coal-water material into the temporary storage bin 3. The water enters from the inlet, passes through the pressure reducing valve 7 to reduce the water pressure, and is then sent to the water replenishment tank 4. The temporary storage bin 3 contains a liquid level sensor (the liquid level sensor needs to be bidirectionally electrically connected to the controller 14, and a conventional float liquid level sensor is selected; when the liquid level rises...).The float rises accordingly, triggering a switch or sensor via a mechanical linkage or magnetic coupling to output a liquid level signal. When the water level in the temporary storage tank 3 is too low, the liquid level sensor controls the float valve 5 to open, allowing water to be supplied to the temporary storage tank 3 through the replenishment pipe. The end of the replenishment pipe extends into the interior of the temporary storage tank 3, and several water outlets are provided at the bottom of the portion of the pipe extending into the tank 3. These outlets allow for cleaning of the temporary storage tank 3. It should also be noted that although the water entering the replenishment tank 4 is depressurized by the pressure reducing valve 7, it still maintains high pressure. This high pressure allows water to be supplied to the temporary storage tank 3, achieving the functions of replenishment and flushing. The circulating feeding mechanism 8 is located on the upper right side of the workbench 1. It includes 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 rotating seat 85, a rotating frame 86, a rotating shaft 87, a tilting plate 88, and a diversion cylinder 89. The right-side mounting frame 81 is fixedly connected to the right side of the upper surface of the upper mounting frame 6. The upper surface of the right-side mounting frame 81 is provided with the 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 rotatably connected to the rotating shaft 87. The outer side of the rotating shaft 87... A rotating plate 88 is fixedly connected to the arc surface, a rotating frame 86 is fixedly connected to the upper end of the rotating shaft 87, a fixed arm 84 is fixedly connected to the front end of the diverting coal-water mixture discharge pipe 83, a front rotating seat 85 is fixedly connected to the front side of the upper surface of the fixed arm 84, a diverting cylinder 89 is rotatably connected inside the front rotating seat 85, the telescopic end of the diverting cylinder 89 is rotatably connected to the front side of the rotating frame 86, the air inlet and outlet of the diverting cylinder 89 are connected to an external compression pump through an air pipe, the input end of the reversing valve on the diverting cylinder 89 is electrically connected to the output end of the controller 14, the rotating plate 88 is a semi-circular plate, and a fixed semi-circular plate is provided in the middle of the diverting feed pipe 82, the semi-circular plate and the fixed semi-circular plate can form a complete circular plate.

[0018] Measuring 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 symmetrically fixed to the right side of the upper mounting frame 6 via a weighing mounting bracket. The lower ends of the two weighing boxes 91 are respectively hinged to the lower side plate 93. The upper left and right sides of the two weighing boxes 91 are symmetrically rotatably connected to the opening and closing drive cylinders 92. The extension and retraction ends of the eight opening and closing drive cylinders 92 are respectively rotatably connected to the middle of the lower side plate 93 corresponding to the vertical position. The air inlet and outlet of the eight opening and closing drive cylinders 92 are respectively externally connected to an external air pump. At this point, the external feeding equipment can be controlled. The water containing coal particles enters the front side of the split coal-water mixture discharge pipe 83 through the split feed pipe 82. At this time, the front coal-water mixture discharge pipe of the split coal-water mixture discharge pipe 83 is connected to the split feed pipe 82. The front coal-water mixture discharge pipe continues to discharge downwards into the front weighing box 91. After the weight inside the weighing box 91 reaches the preset threshold, it is necessary to switch to discharging coal-water mixture into the rear weighing box 91. At this time, the controller 14 can be controlled to operate the split cylinder 89. The telescopic end of the flow cylinder 89 extends, thereby pushing the rotating frame 86, forcing the rotating frame 86 to rotate 90 degrees counterclockwise around the center of the rotating shaft 87. At this time, the tilting plate 88 rotates 90 degrees counterclockwise around the center of the rotating shaft 87. At this time, the arc-shaped connecting port connects the feed pipe 82 and the discharge port of the coal-water mixture discharge pipe 83 on the rear side. At this time, the water containing coal particles is discharged into the interior of the weighing box 91 on the rear side. (The pneumatic vibration pump inside the weighing box 91 operates, generating vibration force, which in turn drives the hollow frame inner chamber to vibrate at a high frequency. The high-frequency vibration of the hollow frame inner chamber...) The silo dehydrates the coal-water mixture, and the wastewater generated is discharged through the long dehydration hole. At this time, only solid coal remains in the hollow frame silo. The controller can then be adjusted to operate the weighing sensor, which measures the total weight of the weighing silo. After the measurement is completed, when it is necessary to discharge the solid coal inside the weighing silo, the external air pump can be adjusted to start and stop the drive cylinder 92, which pushes the rear end of the lower side plate 93 to rotate counterclockwise through its own rear hinge point. The lower side plate 93 under the weighing box 91 on the front side will open, and the coal particles inside will fall into the temporary storage silo 3.

[0019] The working principle of the uninterrupted metering and conveying coal-water pump truck provided by this utility model is as follows: The hydraulic control center 12 is manually adjusted to control the hydraulic drive track 2, thereby moving the coal-water pump truck. After reaching the designated position, the controller 14 and the hydraulic control center 12 are adjusted, and the telescopic ends of the four lifting hydraulic cylinders 13 extend, lifting the coal-water pump truck. At this time, the external feeding equipment can be adjusted, and the water containing coal particles enters the front side of the diverting coal-water mixture discharge pipe 83 through the diverting feed pipe 82. At this time, the front coal-water mixture discharge pipe of the diversion coal-water mixture discharge pipe 83 is connected to the diversion feed pipe 82. At this time, the front coal-water mixture discharge pipe continues to discharge downwards into the front weighing box 91. After the coal quality inside the weighing box 91 reaches the specified quality, it is necessary to switch to discharging coal-water mixture into the rear weighing box 91. At this time, the controller 14 can be adjusted, the diversion cylinder 89 operates, the telescopic end of the diversion cylinder 89 extends, thereby pushing the rotating frame 86, forcing the rotating frame 86 to rotate around the shaft 8. Rotating 88 counterclockwise 90 degrees around the center of shaft 87, the flip plate 88 also rotates 90 degrees counterclockwise around the center of shaft 87. At this time, the arc-shaped connecting port connects the feed pipe 82 to the rear outlet of the coal-water mixture discharge pipe 83. Water containing coal particles flows into the rear weighing box 91. During this period, the lower side plate 93 of the front weighing box 91 opens, and the coal material inside falls into the temporary storage bin 3. At this time, the controller 14 controls the coal-water pump to pump the coal-water mixture. The coal-water mixture is pumped out through the 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 predetermined threshold, the float valve 5 will operate, pumping the water in the water replenishment tank 4 into the temporary storage bin 3. This can replenish the water in the temporary storage bin 3 in time and prevent the coal-water pump 7 from running dry and burning out. At the same time, the water flow sent into the water replenishment tank 4 by the pressure reducing valve 7 is a high-pressure water flow, which can wash the inner wall of the temporary storage bin 3. Then, the weighing boxes 91 on the front and rear sides will alternately discharge coal-water material into the temporary storage bin 3 to achieve uninterrupted operation of the pump truck.

[0020] As a supplementary embodiment of this utility model, a wear-resistant material layer is coated on the contact surfaces of the rotating frame 86 and the rotating shaft 87, preferably a diamond coating. Since the rotating frame 86 and the rotating shaft 87 need to overcome the resistance of the coal-water mixture to rotate during operation, long-term use can easily cause wear on the contact surfaces. By coating the contact surfaces with an ultra-hard wear-resistant material layer, the durability of the product can be improved.

[0021] In another embodiment of this utility model, the rotating shaft 87 is a hollow shaft, and the inside is encapsulated with polypropylene non-woven fabric impregnated with wear-resistant hydraulic oil. Oil seepage holes are opened on the part of the rotating shaft 87 that contacts the rotating frame 86, thereby lubricating the contact surface 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 core chip of the controller 14 disclosed in the above embodiments is a single-chip microcomputer, specifically the S7-300. The hydraulic drive track 2, float valve 5, pressure reducing valve 7, coal water pump, diverter cylinder 89, opening and closing drive cylinder 92, hydraulic control center 12, and lifting hydraulic cylinder 13 can be freely configured according to the actual application scenario. It is recommended that the hydraulic drive track 2 be an LDZ04 series hydraulic drive track, the float valve 5 be a 100X-16P model stainless steel remote control float valve, the pressure reducing valve 7 be a Y43X pilot-operated pressure reducing valve, the coal water pump be an AH series slurry pump, the diverter cylinder 89 be an SMC series cylinder, and the opening and closing drive cylinder 92 be an SMC series cylinder. The hydraulic control center 12 is a hydraulic station selected according to the number of cylinders mentioned above, and the lifting hydraulic cylinder 13 is an HSG type lifting hydraulic cylinder. The controller 14 controls the operation of the hydraulic drive track 2, water pump 5, coal water pump 7, diverter cylinder 89, hydraulic control center 12, and lifting hydraulic cylinder 13 using methods commonly used in the prior art.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A coal-water pump truck for uninterrupted metering and conveying, characterized in that: It includes a workbench (1), a metering mechanism (9), and a circulating feeding mechanism (8); Workbench (1): A hydraulic control center (12) is fixedly connected to its left side, and a controller (14) is fixedly connected to the left side of the hydraulic control center (12). A temporary storage bin (3) is fixedly connected to the right side of the upper surface of the workbench (1). A water replenishment tank (4) is provided on the front side of the workbench (1). A coal-water pump is connected in series on the lower left side of the temporary storage bin (3). The outlet 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. 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). 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 diversion pipe. The float valve (5), the pressure reducing valve (7) and the input end of the coal water pump are electrically connected to the output end of the controller (14). The input end of the controller (14) is electrically connected to an external power source. Measuring mechanism (9); it is symmetrically arranged on the right side of the workbench (1) and is used to measure the coal content in the coal-water mixture; Circulating feeding mechanism (8): It is located on the upper right side of the workbench (1) and is used to feed the symmetrically arranged metering mechanism (9) in a circulating manner.

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

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

4. The coal and water pump truck for uninterrupted metering and conveying according to claim 1, characterized in that: The front and rear sides of the workbench (1) are respectively symmetrically fixedly connected with lifting hydraulic cylinders (13). The extension and retraction ends of the lifting hydraulic cylinders (13) are all fixedly connected with rubber pads. The oil inlet and outlet of the four lifting hydraulic cylinders (13) are also connected to the oil inlet and outlet of the hydraulic control center (12) through oil supply pipes. The input ends of the reversing valves on the four lifting hydraulic cylinders (13) are respectively electrically connected to the output end of the controller (14).

5. A coal and water pump truck for uninterrupted metering and conveying according to claim 2, characterized in that: The measuring 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 symmetrically fixed to the right side of the upper mounting frame (6) through a weighing mounting frame. The lower ends of the two weighing boxes (91) are respectively hinged to the lower side plate (93). The upper side of the left side surface and the upper side of the right side surface of the two weighing boxes (91) are respectively symmetrically rotatably connected to the opening and closing drive cylinder (92). The extension and retraction ends of the eight opening and closing drive cylinders (92) are respectively rotatably connected to the middle of the lower side plate (93) corresponding to the vertical position. The air inlet and outlet of the eight opening and closing drive cylinders (92) are respectively externally connected to an external air pump.

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

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