Cement kiln head coal conveying equipment capable of weighing and conveying materials

Abstract

The utility model discloses cement kiln head coal conveying equipment capable of weighing and conveying materials, which comprises a raw material bin, a pressure relief cone is mounted at the bottom of the raw material bin, a connecting pipe is connected to the bottom of the raw material bin, a discharging pipe is connected to the lower end of the connecting pipe, a pneumatic flow valve is mounted between the connecting pipe and the discharging pipe, and the pneumatic flow valve is connected with the pressure relief cone. The surface of the lower end of the discharging pipe is connected with a dust collecting pipe, a rotor scale is installed below the raw material bin, the upper surface of the rotor scale is connected with a soft rubber sealing connector, and the lower surface of the rotor scale is connected with a soft rubber sealing opening. The bottom of the raw material bin is connected with the discharging pipe through the connecting pipe, the discharging pipe is used for discharging materials in the raw material bin, the pressure reducing cone is arranged at the inner bottom of the raw material bin and used for reducing bin pressure, stabilizing material flow and facilitating stable discharging, meanwhile, the pneumatic flow valve is installed between the discharging pipe and the connecting pipe, and the pneumatic flow valve is arranged between the discharging pipe and the connecting pipe. The blanking amount and the load rate in the scale body of the rotor scale are controlled by adjusting the opening degree of the pneumatic flow valve.

Description

Technical Field

[0001] This utility model relates to the field of cement kiln coal conveying technology, specifically a cement kiln head coal conveying device that can weigh and convey materials. Background Technology

[0002] The cement kiln head is connected to the coal conveying equipment, which feeds pulverized coal raw materials into the cement kiln for calcination. Generally, a punch plate flow meter is used to measure the raw material feed rate, and the flow valve opening is adjusted according to the feed rate feedback from the punch plate flow meter to control the material discharge rate and the stability of the material flow in the short inclined chute. The punch plate flow meter itself does not have the function of stabilizing the material flow. When the material level in the raw material silo fluctuates, it has a great impact on the feed rate measurement of the punch plate flow meter, which can directly lead to large fluctuations in the current of the kiln tail elevator, unstable raw material feed rate into the kiln, and affect the calcination quality of the kiln.

[0003] Existing cement kiln head coal conveying equipment has difficulty controlling the material flow rate during the coal conveying process, which is not conducive to stable feeding. This results in poor control of the weighing load rate, damage to the weighing body, and affects the weighing accuracy of the weighing body.

[0004] Therefore, those skilled in the art have provided a cement kiln head coal conveying device capable of weighing and conveying materials to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a cement kiln head coal conveying device that can weigh and convey materials, so as to solve the problems mentioned in the background art that the existing cement kiln head is not conducive to stable feeding during the coal conveying process and the load rate of the weighing body is not easy to control.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A cement kiln head coal conveying device capable of weighing and conveying materials includes: a raw material silo, a pressure reducing cone installed at the bottom of the raw material silo, a connecting pipe connected to the bottom of the raw material silo, a discharge pipe connected to the lower end of the connecting pipe, a pneumatic flow valve installed between the connecting pipe and the discharge pipe, a dust collection pipe connected to the lower surface of the discharge pipe, a rotor scale installed below the raw material silo, a mounting bracket for support installed below the rotor scale, a soft rubber sealing interface connected to the upper surface of the rotor scale, and a soft rubber seal connected to the lower surface of the rotor scale.

[0008] According to the claim, a cement kiln head coal conveying device capable of weighing and conveying materials is characterized in that a conveying pipe is internally connected to the soft rubber seal, and the soft rubber sealing interface is interconnected with the lower end of the discharge pipe.

[0009] According to the claim, a cement kiln head coal conveying equipment capable of weighing and conveying materials is characterized in that an inlet pipe is installed at the bottom of the raw material silo, and the external shape of the pressure-reducing cone at the bottom of the raw material silo is conical.

[0010] According to the claim, a cement kiln head coal conveying device capable of weighing and conveying materials is characterized in that the discharge pipe is connected to the bottom of the raw material silo through a connecting pipe, and the lower end opening of the discharge pipe is connected to the interior of the rotor scale through a soft rubber sealing interface.

[0011] According to the claim, a cement kiln head coal conveying device capable of weighing and conveying materials is characterized in that the feeding pipe and the dust collection pipe are integrally connected, and the feeding pipe and the dust collection pipe are connected at an inclination of 45 degrees.

[0012] As a further embodiment of this utility model, a connecting ball bushing is installed on the left side of the dust collection pipe, and a release pipe is connected to the surface of the connecting ball bushing, and an opening and closing valve is installed on the surface of the release pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The bottom of the raw material silo is connected to the discharge pipe via a connecting pipe. The discharge pipe is used to discharge the material inside the raw material silo. A pressure reducing cone is installed at the bottom of the raw material silo to reduce the silo pressure and stabilize the material flow, which is conducive to stable discharge. At the same time, a pneumatic flow valve is installed between the discharge pipe and the connecting pipe. The discharge amount and the load rate in the rotor scale body are controlled by adjusting the opening of the pneumatic flow valve.

[0015] 2. A pneumatic flow valve is installed on the feeding pipe and connected to a dust collection pipe. Adjusting the opening of the pneumatic flow valve controls the feeding amount, ensuring that there is some space at the top of the scale. Through the dust collection pipe connected to the feeding pipe, air-material separation is achieved before entering the scale, ensuring a negative pressure environment inside the scale. In this way, when the raw material silo collapses, the raw material will not flow directly from the feeding metering area to the discharge non-metering area through the gap, avoiding the occurrence of some material not being measured. Through the combined use of the dust collection pipe and the pneumatic flow valve, air-material separation is achieved. Utilizing the negative pressure environment inside the rotor scale, leakage is reduced and the weighing accuracy is improved. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a cement kiln head coal conveying device that can weigh and convey materials.

[0017] Figure 2 This is a second-view structural schematic diagram of a cement kiln head coal conveying device capable of weighing and conveying materials.

[0018] Figure 3This is a schematic diagram of the interconnection between the dust collection pipe and the connecting pipe in a cement kiln head coal conveying device that can weigh and convey materials.

[0019] Figure 4 This is a schematic diagram of the raw material silo structure in a cement kiln head coal conveying device that can weigh and convey materials.

[0020] Figure 5 This is a cross-sectional schematic diagram of the raw material silo in a cement kiln head coal conveying device that can weigh and convey materials.

[0021] In the diagram: 1. Raw material silo; 2. Feed pipe; 3. Rotor scale; 4. Soft rubber sealing interface; 5. Mounting bracket; 6. Soft rubber seal; 7. Conveying pipe; 8. Discharge pipe; 9. Pneumatic flow valve; 10. Connecting pipe; 11. Dust collection pipe; 12. Connecting ball bushing; 13. Release pipe; 14. On / off valve; 15. Pressure reducing cone. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-5 This utility model embodiment provides a cement kiln head coal conveying device that can weigh and convey materials, including: a raw material silo 1, a pressure reducing cone 15 installed at the bottom of the raw material silo 1, a feed pipe 2 installed at the bottom of the raw material silo 1, and the external shape of the pressure reducing cone 15 at the bottom of the raw material silo 1 is conical.

[0024] Coal powder is loaded into raw material silo 1 through feed pipe 2 for storage. The conical pressure reducing cone 15 reduces the pressure inside raw material silo 1, preventing coal powder from accumulating and affecting stable feeding.

[0025] A connecting pipe 10 is connected to the bottom of the raw material silo 1, and a feeding pipe 8 is connected to the lower end of the connecting pipe 10. A pneumatic flow valve 9 is installed between the connecting pipe 10 and the feeding pipe 8. A dust collection pipe 11 is connected to the lower surface of the feeding pipe 8. A rotor scale 3 is installed below the raw material silo 1, and a mounting bracket 5 for support is installed below the rotor scale 3. A soft rubber sealing interface 4 is connected to the upper surface of the rotor scale 3, and a soft rubber seal 6 is connected to the lower surface of the rotor scale 3. A conveying pipe 7 is connected inside the soft rubber seal 6. The soft rubber sealing interface 4 and the lower end of the feeding pipe 8 are interconnected.

[0026] Specifically, a soft rubber sealing interface 4 and a soft rubber seal 6 are respectively provided on the top and bottom of the rotor scale 3. The soft rubber sealing interface 4 and the soft rubber seal 6 form a soft connection with the feeding pipe 8 and the conveying pipe 7. The elasticity and adhesion of the soft rubber material are used to improve the sealing performance of the connection with the feeding pipe 8 and the conveying pipe 7. At the same time, the use of a soft connection helps to offset the impact of feeding on the scale body.

[0027] The feeding pipe 8 is connected to the bottom of the raw material bin 1 through the connecting pipe 10, and the lower opening of the feeding pipe 8 is connected to the inside of the rotor scale 3 through the soft rubber sealing interface 4. The feeding pipe 8 and the dust collection pipe 11 are integrated and connected at an angle of 45 degrees. A connecting ball bushing 12 is installed on the left side of the dust collection pipe 11, and a release pipe 13 is connected to the surface of the connecting ball bushing 12. An opening and closing valve 14 is installed on the surface of the release pipe 13.

[0028] Specifically, through the connection between the dust collection pipe 11 and the discharge pipe 8, a pneumatic flow valve 9 is configured on the discharge pipe 8. By adjusting the opening of the flow valve, the discharge amount and the load rate inside the rotor scale are controlled to ensure that there is a certain amount of space in the upper part of the scale body. Then, through the dust collection pipe 11 connected to the discharge pipe 8, the air-material separation before entering the scale is realized, ensuring that the scale body is a negative pressure environment. The dust collection pipe 11 is connected to the release pipe 13, and the air is discharged through the release pipe 13 to complete the air-material separation before entering the scale.

[0029] The working principle of this utility model is as follows: When using this utility model, coal powder is poured into the raw material silo 1 through the feed pipe 2. During feeding, the material is fed through the feed pipe 8. The pressure reducing cone 15 at the bottom of the raw material silo 1 will reduce the silo pressure, thereby stabilizing the material flow inside the feed pipe 8. The lower end of the feed pipe 8 is connected to the interior of the rotor scale 3. The pneumatic flow valve 9 is opened and the opening degree of the flow valve is adjusted to control the feeding amount and the load rate inside the rotor scale, so that there is a certain amount of space in the upper part of the rotor scale 3. Through the connection of the dust collection pipe 11, the air in the upper part of the space is discharged through the dust collection pipe 11. The opening and closing valve 14 on the release pipe 13 is opened to discharge the air, completing the air-material separation before weighing. After weighing, the rotor scale 3 discharges the material into the cement kiln head through the conveying pipe 7 connected at the bottom, completing the coal conveying.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cement kiln head coal conveying device capable of weighing and conveying materials, characterized in that, include: Raw material silo (1), a pressure reducing cone (15) is installed at the bottom of the raw material silo (1), a connecting pipe (10) is connected to the bottom of the raw material silo (1), and a discharge pipe (8) is connected to the lower end of the connecting pipe (10), a pneumatic flow valve (9) is installed between the connecting pipe (10) and the discharge pipe (8), a dust collection pipe (11) is connected to the lower surface of the discharge pipe (8), a rotor scale (3) is installed below the raw material silo (1), and a mounting bracket (5) for support is installed below the rotor scale (3), a soft rubber sealing interface (4) is connected to the upper surface of the rotor scale (3), and a soft rubber seal (6) is connected to the lower surface of the rotor scale (3).

2. The cement kiln head coal conveying equipment capable of weighing and conveying materials according to claim 1, characterized in that, The soft rubber seal (6) is internally connected to a feeding pipe (7), and the soft rubber sealing interface (4) is connected to the lower end of the feeding pipe (8).

3. A cement kiln head coal conveying device capable of weighing and conveying materials according to claim 1, characterized in that, The bottom of the raw material silo (1) is equipped with a feed pipe (2), and the external shape of the pressure relief cone (15) at the bottom of the raw material silo (1) is conical.

4. A cement kiln head coal conveying device capable of weighing and conveying materials according to claim 1, characterized in that, The feeding pipe (8) is connected to the bottom of the raw material bin (1) through the connecting pipe (10), and the lower end opening of the feeding pipe (8) is connected to the inside of the rotor scale (3) through the soft rubber sealing interface (4).

5. A cement kiln head coal conveying device capable of weighing and conveying materials according to claim 1, characterized in that, The feeding pipe (8) and the dust collection pipe (11) are integrated and connected at an angle of 45 degrees.

6. A cement kiln head coal conveying device capable of weighing and conveying materials according to claim 1, characterized in that, A connecting ball bushing (12) is installed on the left side of the dust collection pipe (11), and a release pipe (13) is connected to the surface of the connecting ball bushing (12), and an opening and closing valve (14) is installed on the surface of the release pipe (13).

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