Weight measuring system and method for horizontal rotary kiln

Abstract

According to the weight measuring system and method for the horizontal rotary kiln, a measuring wheel belt is arranged on the periphery of a rotary kiln body of the system, and the measuring wheel belt comprises a fixed wheel belt and a floating wheel belt; the fixed wheel belt and the floating wheel belt are each provided with a plurality of hydraulic sliding shoes. Supporting foundations are arranged at the lower ends of the hydraulic sliding shoes; the hydraulic sliding shoes are distributed between the lower portion of the fixed wheel belt and the supporting foundation in an arc shape, and the hydraulic sliding shoes are distributed between the lower portion of the floating wheel belt and the supporting foundation in an arc shape. The hydraulic sliding shoes are provided with hydraulic oil subsystems, the hydraulic oil subsystems supply high-pressure hydraulic oil to the running surfaces of the hydraulic sliding shoes, and lubricating oil films are formed between the surfaces of the hydraulic sliding shoes and the fixed wheel belt or the floating wheel belt. A pressure transmitter is installed on a lubricating oil pipeline of each hydraulic sliding shoe, and the gravity of the rotary kiln body is obtained by measuring the force applied to each hydraulic sliding shoe by the rotary kiln body through the pressure transmitters. The method is not influenced by stop or rotation speed of the rotary kiln body, the temperature measurement result is high in accuracy, and the measurement process is safe and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of rotary kilns, and in particular relates to a horizontal rotary kiln weight measurement system and method. Background Art

[0002] The horizontal rotary kiln includes a preheating zone, a combustion zone, and a distillation zone. The shale enters the preheating zone for preheating, the temperature is raised to 350 degrees Celsius, and then enters the distillation zone to be heated to 500 degrees Celsius for distillation. After distillation, it enters the combustion zone for combustion. After combustion, it enters the outside of the preheating zone for heat exchange with the shale entering the preheating zone.

[0003] The horizontal rotary kiln uses pusher plates arranged in different areas of the kiln to push the material flow. The material is heated from the preheating area to the distillation area for distillation. After combustion in the combustion area, it returns to the preheating area for heat exchange with new materials and cools down for discharge. The whole process requires the material to move. If the material flow is not smooth due to damage to the pusher plate or material accumulation, it will cause the material seal in the horizontal rotary kiln to fail and become dangerous. The poor material flow can be reflected by the weight change of the horizontal rotary kiln, so the weight measurement of the horizontal rotary kiln is very important. However, since the rotary kiln is rotating, the weight cannot be measured directly. How to achieve the weight measurement of the horizontal rotary kiln has practical application significance. Summary of the invention

[0004] To this end, the present invention provides a horizontal rotary kiln weight measurement system and method to achieve weight measurement of rotating rotary kilns.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a horizontal rotary kiln weight measurement system, comprising a rotary kiln body, the periphery of the rotary kiln body is provided with a measuring wheel belt, the measuring wheel belt comprises a fixed wheel belt and a floating wheel belt; the fixed wheel belt and the floating wheel belt are both provided with a plurality of hydraulic sliding shoes; the lower end of the hydraulic sliding shoe is provided with a supporting base;

[0006] The hydraulic slippers are distributed in an arc shape between the lower part of the fixed wheel belt and the supporting base, and the hydraulic slippers are distributed in an arc shape between the lower part of the floating wheel belt and the supporting base;

[0007] The hydraulic slipper is equipped with a hydraulic oil subsystem, which supplies high-pressure hydraulic oil to the running surface of each hydraulic slipper and forms a lubricating oil film between the hydraulic slipper surface and the fixed wheel belt / the floating wheel belt;

[0008] A pressure transmitter is installed on the lubricating oil pipeline of each hydraulic sliding shoe, and the force applied by the rotary kiln body to each hydraulic sliding shoe is measured by the pressure transmitter to obtain the gravity of the rotary kiln body.

[0009] As a preferred solution of the horizontal rotary kiln weight measurement system, it also includes a DCS control subsystem, the pressure transmitter and the DCS control subsystem are electrically connected, and the DCS control subsystem is used to measure the force applied by the rotary kiln body to each of the hydraulic shoes through the pressure transmitter to obtain the gravity of the rotary kiln body.

[0010] As a preferred solution for the horizontal rotary kiln weight measurement system, the hydraulic slippers are divided into active slippers and passive slippers, the active slippers are directly fixed on the supporting base; the passive slippers are installed on the hydraulic piston; the active slippers and the passive slippers are spaced apart.

[0011] As a preferred solution for the horizontal rotary kiln weight measurement system, the hydraulic slipper includes a shaft shoe body, a spherical bearing, a driven piston and an oil cylinder; the spherical bearing is provided at the lower part of the shaft shoe body, the driven piston is provided at the lower part of the spherical bearing, the driven piston is located inside the oil cylinder, and a high-pressure oil groove is formed between the driven piston and the oil cylinder.

[0012] As a preferred solution for the horizontal rotary kiln weight measurement system, the hydraulic oil subsystem includes a high-pressure pump, a first flow distributor, and a second flow distributor; the high-pressure pump is connected to the first flow distributor through a pipeline, the first flow distributor is connected to the second flow distributor through a pipeline, and the second flow distributor is connected to the oil inlet of the hydraulic shoe through a pipeline.

[0013] The present invention also provides a method for measuring the weight of a horizontal rotary kiln, which uses the above-mentioned horizontal rotary kiln weight measurement system and comprises:

[0014] By measuring the lubricating oil pressure between the wheel band and each hydraulic sliding shoe, the force applied by the rotary kiln body to each hydraulic sliding shoe is obtained;

[0015] According to the parallelogram law, the gravity borne by each hydraulic sliding shoe is obtained according to the angle between the axis direction of each hydraulic sliding shoe and the vertical ground;

[0016] The sum of the gravity exerted on each hydraulic sliding shoe is taken as the weight of the rotary kiln body applied to the measuring wheel belt, and the sum of the gravity of the measuring wheel belt is taken as the weight of the rotary kiln body.

[0017] As the preferred method for measuring the weight of a horizontal rotary kiln, the calculation formula for the gravity borne by the measuring wheel belt on one side is:

[0018]

[0019] In the formula, G is the gravity borne by the measuring wheel belt on one side; is the angle between the axis straight line of the i-th hydraulic slipper of the measuring wheel on one side and the vertical line; i is the number of slippers; S is the force area of ​​each hydraulic slipper; P(i) is the pressure in the lubricating oil pipeline of the i-th hydraulic slipper.

[0020] As the preferred solution for the weight measurement method of the horizontal rotary kiln, the weight calculation formula of the rotary kiln body is:

[0021] G0=G1+G2

[0022] Wherein, G0 is the weight of the rotary kiln body; G1 is the weight borne by the fixed wheel belt at the fixed end; G2 is the weight borne by the floating wheel belt at the floating end.

[0023] The invention has the following advantages: a rotary kiln body is provided, and a measuring belt is provided on the periphery of the rotary kiln body, and the measuring belt includes a fixed belt and a floating belt; the fixed belt and the floating belt are both provided with a plurality of hydraulic shoes; a supporting base is provided at the lower end of the hydraulic shoe; the hydraulic shoes are distributed in an arc shape between the lower part of the fixed belt and the supporting base, and the hydraulic shoes are distributed in an arc shape along the lower part of the floating belt and the supporting base; the hydraulic shoes are equipped with a hydraulic oil subsystem, and the hydraulic oil subsystem supplies high-pressure hydraulic oil to the running surface of each hydraulic shoe, and forms a lubricating oil film between the surface of the hydraulic shoe and the fixed belt / floating belt; a pressure transmitter is installed on the lubricating oil pipeline of each hydraulic shoe, and the force applied by the rotary kiln body to each hydraulic shoe is measured by the pressure transmitter to obtain the gravity of the rotary kiln body. The invention utilizes the lubricating oil film pressure between the hydraulic shoe and the measuring belt, decomposes the force according to different angles, and accumulates to obtain the weight of the entire rotary kiln body, and is not affected by the stop or rotation speed of the rotary kiln body; the temperature measurement result is highly accurate, and the measurement process is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0025] Figure 1 A schematic diagram of a horizontal rotary kiln weight measurement system provided in an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of a hydraulic sliding shoe of a horizontal rotary kiln weight measurement system provided in an embodiment of the present invention;

[0027] Figure 3 A schematic diagram of a hydraulic oil subsystem in a horizontal rotary kiln weight measurement system provided in an embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the principle of the horizontal rotary kiln weight measurement system provided in an embodiment of the present invention.

[0029] In the figure, 1. rotary kiln body; 2. fixed wheel belt; 3. floating wheel belt; 4. hydraulic sliding shoe; 5. supporting base; 6. hydraulic oil subsystem; 7. pressure transmitter; 8. DCS control subsystem; 9. shaft shoe body; 10. spherical bearing; 11. driven piston; 12. oil cylinder; 13. high-pressure pump; 14. first flow distributor; 15. second flow distributor; 16. high-pressure oil tank. DETAILED DESCRIPTION

[0030] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The embodiment of the present invention provides a horizontal rotary kiln weight measurement system, comprising a rotary kiln body 1, wherein the periphery of the rotary kiln body 1 is provided with a measuring belt, wherein the measuring belt comprises a fixed belt 2 and a floating belt 3; the fixed belt 2 and the floating belt 3 are both provided with a plurality of hydraulic slippers 4; and a supporting base 5 is provided at the lower end of the hydraulic slipper 4;

[0032] The hydraulic slipper 4 is distributed in an arc shape between the lower part of the fixed wheel belt 2 and the supporting base 5, and the hydraulic slipper 4 is distributed in an arc shape between the lower part of the floating wheel belt 3 and the supporting base 5;

[0033] The hydraulic slipper 4 is equipped with a hydraulic oil subsystem 6, and the hydraulic oil subsystem 6 supplies high-pressure hydraulic oil to the running surface of each hydraulic slipper 4, and forms a lubricating oil film between the surface of the hydraulic slipper 4 and the fixed wheel belt 2 / the floating wheel belt 3;

[0034] A pressure transmitter 7 is installed on the lubricating oil pipeline of each hydraulic sliding shoe 4 , and the force applied by the rotary kiln body 1 to each hydraulic sliding shoe 4 is measured by the pressure transmitter 7 to obtain the gravity of the rotary kiln body 1 .

[0035] In this embodiment, a DCS control subsystem 8 is also included. The pressure transmitter 7 is electrically connected to the DCS control subsystem 8. The DCS control subsystem 8 is used to measure the force applied by the rotary kiln body 1 to each of the hydraulic slippers 4 through the pressure transmitter 7 to obtain the gravity of the rotary kiln body 1; the hydraulic slippers 4 are divided into active slippers and passive slippers, and the active slippers are directly fixed on the supporting base 5; the passive slippers are installed on the hydraulic piston; the active slippers and the passive slippers are arranged at intervals.

[0036] Specifically, the measuring belt supports the rotary kiln body 1 through two fixed belts 2 and floating belts 3 with a diameter of 11.1m, and the rotary kiln body 1 rotates on the fixed belts 2 and floating belts 3. The fixed belts 2 and floating belts 3 are both supported by a group of six hydraulic slippers 4. High-pressure hydraulic oil is supplied to the running surface of each hydraulic slipper 4, and the high-pressure oil forms a thin lubricating oil film between the surface of the hydraulic slipper 4 and the measuring belt. The oil film prevents metals from contacting each other, so that the system is basically frictionless, and the drive device can easily drive the rotary kiln body 1 to rotate. In addition, a pressure transmitter 7 is installed on the lubricating oil pipeline of each hydraulic slipper 4, with a range of 0-120bar, and is transmitted to the DCS control subsystem 8 through a 4-20ma signal.

[0037] In this embodiment, the hydraulic slipper 4 includes a shaft shoe body 9, a spherical bearing 10, a driven piston 11 and an oil cylinder 12; the spherical bearing 10 is provided at the lower part of the shaft shoe body 9, and the driven piston 11 is provided at the lower part of the spherical bearing 10. The driven piston 11 is located inside the oil cylinder 12, and a high-pressure oil groove 16 is formed between the driven piston 11 and the oil cylinder 12.

[0038] Specifically, the fixed belt 2 and the floating belt 3 are each placed on a set of six spherical bearings 10 of the hydraulic shoes 4, and the spherical bearings 10 of the hydraulic shoes 4 transfer the load to the supporting base 5. The spherical bearings 10 of the hydraulic shoes 4 are hydraulic pads based on the high-pressure oil groove 16. In other words, the spherical bearings 10 are lubricated by the high-pressure oil supplied to each hydraulic shaft shoe, and the high-pressure oil forms an oil film of suitable thickness at the fixed belt 2 and the floating belt 3. Without this oil film, the white metal surface of the hydraulic shoe 4 will contact the steel fixed belt 2 and the floating belt 3, and both will be damaged quickly. The oil pressure and the white metal temperature on the surface of each shaft shoe body 9 are continuously monitored. These conditions can be seen on the CCR (central control room), and the alarm conditions can also be seen.

[0039] The fixed belt 2 and the floating belt 3 are both supported by six hydraulic shoes 4. Six hydraulic shoes 4 are required to limit the weight borne by each hydraulic shoe 4. As the operating temperature of the rotary kiln body 1 increases, the diameters of the fixed belt 2 and the floating belt 3 also increase. Due to the huge weight, the fixed belt 2 and the floating belt 3 will also be slightly deformed. The fixed belt 2 and the floating belt 3 may not be round, or the supporting base 5 may sink and tilt over time. It is impossible to rigidly fix all six hydraulic shoes 4 on the supporting base 5.

[0040] Therefore, in order to make the hydraulic slipper 4 have a certain degree of flexibility inside, only two hydraulic slippers 4 are directly fixed to the foundation under the fixed wheel belt 2 and the floating wheel belt 3. These two slippers are called active slippers. The other four slippers are mounted on hydraulic pistons (actually large hydraulic jacks). In order to enable them to move radially to adjust the deviation, these four slippers are driven slippers. Each active slipper is connected to and directly controls two driven slippers. The radial position and load carrying capacity of the driven slippers are controlled by hydraulic pressure, and the hydraulic pressure comes from the contact surface of the active slipper.

[0041] The hydraulic shoe 4 must be completely parallel to the surface of the fixed and floating belts 2 and 3 to ensure uniform oil film thickness. Due to errors in the leveling of the system, in order to ensure that the hydraulic shoe 4 can follow the irregular movements in the fixed and floating belts 2 and 3 during rotation, the hydraulic shoe 4 is mounted on a large spherical bearing 10. If necessary, this allows the hydraulic shoe 4 to tilt and swing slightly and ensures that the hydraulic shoe 4 follows the belt.

[0042] In this embodiment, the hydraulic oil subsystem 6 includes a high-pressure pump 13, a first flow distributor 14, and a second flow distributor 15; the high-pressure pump 13 is connected to the first flow distributor 14 through a pipeline, the first flow distributor 14 is connected to the second flow distributor 15 through a pipeline, and the second flow distributor 15 is connected to the oil inlet of the hydraulic slipper 4 through a pipeline.

[0043] Specifically, the hydraulic oil subsystem 6 uses two high-pressure pumps 13 to supply oil to the hydraulic slippers 4 of the respective fixed belts 2 and floating belts 3. The hydraulic oil subsystem 6 has two independent high-pressure pump 13 circuits (each circuit has two pumps, one for operation and one for backup). Each circuit supplies a specified amount of oil to all six hydraulic slippers 4, thereby providing the same level of redundant protection to ensure that oil can always be supplied to the hydraulic slippers 4.

[0044] Each hydraulic oil subsystem 6 corresponds to a fixed wheel band 2 and a floating wheel band 3, and serves the corresponding six hydraulic slippers 4. The hydraulic oil subsystem 6 uses a pump to pump the oil to high pressure, and then distributes it to each hydraulic slipper 4 in a quantitative manner through the first flow distributor 14 and the second flow distributor 15. The hydraulic oil is pushed from one end of the surface of the hydraulic slipper 4 to the other end, and then flows into the wheel band outer cover foundation located on the top of the hydraulic oil bearing foundation. The oil from the outer cover flows back through the common oil drain pipe due to gravity.

[0045] The embodiment of the present invention further provides a method for measuring the weight of a horizontal rotary kiln, which adopts a horizontal rotary kiln weight measuring system of the above embodiment, comprising:

[0046] By measuring the lubricating oil pressure between the wheel band and each hydraulic sliding shoe 4, the force applied by the rotary kiln body 1 to each hydraulic sliding shoe 4 is obtained;

[0047] According to the parallelogram law, the gravity borne by each hydraulic sliding shoe 4 is obtained according to the angle between the axis direction of each hydraulic sliding shoe 4 and the vertical ground;

[0048] The sum of the gravity exerted on each hydraulic sliding shoe 4 is taken as the weight of the rotary kiln body 1 applied to the measuring wheel belt, and the sum of the gravity of the measuring wheel belt is taken as the weight of the rotary kiln body 1 .

[0049] In this embodiment, the lubricating oil pressure P between the wheel belt and each hydraulic shoe 4 is measured, and the force is decomposed. The corresponding gravity is calculated according to the parallelogram law, and the gravity of each hydraulic shoe 4 of the fixed wheel belt 2 and the floating wheel belt 3 is accumulated, so as to calculate the weight of the rotary kiln body 1 and the weight of the material in the rotary kiln body 1.

[0050] The calculation formula for the gravity borne by the measuring wheel belt on one side is:

[0051]

[0052] In the formula, G is the gravity borne by the measuring wheel belt on one side; is the angle between the axis straight line of the i-th hydraulic slipper 4 of the measuring wheel on one side and the vertical line; i is the number of slippers; S is the force area of ​​each hydraulic slipper 4; P(i) is the pressure in the lubricating oil pipeline of the i-th hydraulic slipper 4.

[0053] Among them, the weight calculation formula of the rotary kiln body 1 is:

[0054] G0=G1+G2

[0055] Wherein, G0 is the weight of the rotary kiln body 1; G1 is the weight borne by the fixed wheel belt 2 at the fixed end; G2 is the weight borne by the floating wheel belt 3 at the floating end.

[0056] In summary, the present invention is provided with a rotary kiln body 1, and a measuring belt is provided on the periphery of the rotary kiln body 1, and the measuring belt includes a fixed belt 2 and a floating belt 3; the fixed belt 2 and the floating belt 3 are both provided with a plurality of hydraulic slippers 4; a supporting base 5 is provided at the lower end of the hydraulic slipper 4; the hydraulic slipper 4 is distributed in an arc shape between the lower part of the fixed belt 2 and the supporting base 5, and the hydraulic slipper 4 is distributed in an arc shape between the lower part of the floating belt 3 and the supporting base 5; the hydraulic slipper 4 is configured with a hydraulic oil subsystem 6, and the hydraulic oil subsystem 6 supplies high-pressure hydraulic oil to the running surface of each hydraulic slipper 4, and forms a lubricating oil film between the surface of the hydraulic slipper 4 and the fixed belt 2 / floating belt 3; a pressure transmitter 7 is installed on the lubricating oil pipeline of each hydraulic slipper 4, and the force applied by the rotary kiln body 1 to each hydraulic slipper 4 is measured by the pressure transmitter 7 to obtain the gravity of the rotary kiln body 1. The present invention uses the lubricating oil pressure between the measuring wheel band and each hydraulic slipper 4 to obtain the force applied by the rotary kiln body 1 to each hydraulic slipper 4; according to the parallelogram law, the gravity borne by each hydraulic slipper 4 is obtained according to the angle between the axis direction of each hydraulic slipper 4 and the vertical ground; the sum of the gravity borne by each hydraulic slipper 4 is taken as the weight applied to the measuring wheel band by the rotary kiln body 1, and the sum of the gravity of the measuring wheel band is taken as the weight of the rotary kiln body 1. The present invention uses the lubricating oil film pressure between the hydraulic slipper 4 and the measuring wheel band to decompose the force according to different angles, and accumulates and obtains the weight of the entire rotary kiln body 1, and is not affected by the stop or rotation speed of the rotary kiln body 1; the temperature measurement result is highly accurate, and the measurement process is safe and reliable.

[0057] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A horizontal rotary kiln weight measurement system, characterized in that: The invention comprises a rotary kiln body (1), wherein a measuring wheel belt is arranged on the periphery of the rotary kiln body (1), and the measuring wheel belt comprises a fixed wheel belt (2) and a floating wheel belt (3); the fixed wheel belt (2) and the floating wheel belt (3) are both provided with a plurality of hydraulic sliding shoes (4); and a supporting base (5) is arranged at the lower end of each hydraulic sliding shoe (4); The hydraulic slipper (4) is distributed in an arc shape between the lower part of the fixed wheel belt (2) and the supporting base (5), and the hydraulic slipper (4) is distributed in an arc shape along the lower part of the floating wheel belt (3) and the supporting base (5); The hydraulic slipper (4) is equipped with a hydraulic oil subsystem (6), and the hydraulic oil subsystem (6) supplies high-pressure hydraulic oil to the running surface of each hydraulic slipper (4), and forms a lubricating oil film between the surface of the hydraulic slipper (4) and the fixed wheel belt (2) / the floating wheel belt (3); A pressure transmitter (7) is installed on the lubricating oil pipeline of each hydraulic sliding shoe (4), and the force applied by the rotary kiln body (1) to each hydraulic sliding shoe (4) is measured by the pressure transmitter (7) to obtain the gravity of the rotary kiln body (1).

2. A horizontal rotary kiln weight measurement system according to claim 1, characterized in that: The invention also comprises a DCS control subsystem (8), wherein the pressure transmitter (7) and the DCS control subsystem (8) are electrically connected, and the DCS control subsystem (8) is used to measure the force applied by the rotary kiln body (1) to each hydraulic shoe (4) through the pressure transmitter (7) to obtain the gravity of the rotary kiln body (1).

3. A horizontal rotary kiln weight measurement system according to claim 1, characterized in that: The hydraulic slipper (4) is divided into an active slipper and a passive slipper, the active slipper is directly fixed on the supporting base (5); the passive slipper is installed on the hydraulic piston; the active slipper and the passive slipper are arranged at intervals.

4. A horizontal rotary kiln weight measurement system according to claim 3, characterized in that: The hydraulic slipper (4) comprises a shaft slipper body (9), a spherical bearing (10), a driven piston (11) and an oil cylinder (12); the spherical bearing (10) is provided at the lower part of the shaft slipper body (9), the driven piston (11) is provided at the lower part of the spherical bearing (10), the driven piston (11) is located inside the oil cylinder (12), and a high-pressure oil groove (16) is formed between the driven piston (11) and the oil cylinder (12).

5. A horizontal rotary kiln weight measurement system according to claim 1, characterized in that: The hydraulic oil subsystem (6) comprises a high-pressure pump (13), a first flow distributor (14), and a second flow distributor (15); the high-pressure pump (13) is connected to the first flow distributor (14) via a pipeline, the first flow distributor (14) is connected to the second flow distributor (15) via a pipeline, and the second flow distributor (15) is connected to the oil inlet of the hydraulic slipper (4) via a pipeline.

6. A method for measuring the weight of a horizontal rotary kiln, using a horizontal rotary kiln weight measuring system according to any one of claims 1 to 5, characterized in that: include: By measuring the lubricating oil pressure between the wheel band and each hydraulic sliding shoe (4), the force applied by the rotary kiln body (1) to each hydraulic sliding shoe (4) is obtained; According to the parallelogram law, the gravity borne by each hydraulic sliding shoe (4) is obtained according to the angle between the axis direction of each hydraulic sliding shoe (4) and the vertical ground; The sum of the gravity applied to each hydraulic sliding shoe (4) is taken as the weight of the rotary kiln body (1) applied to the measuring wheel belt, and the sum of the gravity of the measuring wheel belt is taken as the weight of the rotary kiln body (1).

7. A method for measuring the weight of a horizontal rotary kiln according to claim 6, characterized in that: The calculation formula for the gravity borne by the measuring wheel on one side is: In the formula, G is the gravity borne by the measuring wheel belt on one side; is the angle between the axis straight line of the ith hydraulic slipper (4) of the measuring wheel on one side and the vertical line; i is the number of slippers; S is the force-bearing area of ​​each hydraulic slipper (4); and P(i) is the pressure in the lubricating oil pipeline of the ith hydraulic slipper (4).

8. A method for measuring the weight of a horizontal rotary kiln according to claim 7, characterized in that: The weight calculation formula of the rotary kiln body (1) is: G0=G1+G2 In the formula, G0 is the weight of the rotary kiln body (1); G1 is the weight borne by the fixed wheel belt (2) at the fixed end; and G2 is the weight borne by the floating wheel belt (3) at the floating end.

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