Coal quantity control system of cement decomposing furnace

Abstract

The utility model discloses a coal quantity control system for a cement decomposing furnace. The coal quantity control system solves the problem that in the prior art, the coal feeding quantity is not easy to control manually. The coal quantity control system of the cement decomposing furnace comprises the decomposing furnace, a rotary kiln, a preheater, a raw material bin, a first rotor scale, a feeding mechanism, a tail coal bin, a second rotor scale, a coal feeding mechanism, a temperature sensor and a control assembly, and the control assembly is arranged on one side of the decomposing furnace and connected with the first rotor scale, the feeding mechanism, the second rotor scale, the coal feeding mechanism and the temperature sensor. The temperature sensor detects the temperature of the discharging end of the preheater and transmits the detection result into the control assembly, the control assembly compares the temperature of the discharging end of the preheater with the preset temperature, and the control assembly controls the amount of pulverized coal output by the second rotor scale according to the comparison result. Therefore, the temperature of the discharging end of the preheater is adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of cement processing, in particular to a coal quantity control system for a cement decomposition furnace. Background Art

[0002] In the cement production process, the outlet temperature of the cement clinker decomposition furnace is one of the key process parameters for the dynamic balance of the thermal system of the new dry cement calcination process. Stabilizing the outlet temperature of the decomposition furnace can effectively ensure the stable production and high-quality production of the clinker production line, while also effectively reducing coal consumption in cement clinker production and saving energy.

[0003] At present, the outlet temperature of the traditional decomposition furnace is generally stabilized by PID automatic control equipment. The PID automatic control equipment adopts a semi-automatic and semi-manual adjustment method. The PID closed-loop control adjusts the amount of cement material entering by monitoring the temperature of the preheater outlet to achieve the stability of the outlet temperature of the decomposition furnace. During the adjustment process, when excessive cement material enters the preheater and the decomposition furnace, it will cause a large change in the temperature of the preheater outlet. At this time, it is necessary to manually control the coal feeding amount to stabilize the outlet temperature of the decomposition furnace. The coal feeding amount is appropriately adjusted by observing the outlet temperature of the preheater. The amount of coal feeding is not easy to control manually, and it is easy to cause unstable coal feeding amount adjustment due to individual differences, resulting in large fluctuations in the outlet temperature of cement clinker and the temperature in the decomposition furnace, which will affect the stability and quality of clinker production and cause coal powder waste.

[0004] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. Utility Model Content

[0005] The utility model provides a coal quantity control system for a cement decomposition furnace, so as to at least solve some of the above technical problems.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A cement decomposition furnace coal quantity control system, comprising a decomposition furnace and a rotary kiln, and further comprising:

[0008] Preheaters are connected to the decomposition furnace and the rotary kiln respectively;

[0009] The raw material bin is located on one side of the decomposition furnace;

[0010] The first rotor scale is arranged in the raw material bin;

[0011] A feeding mechanism is connected to the discharging end of the first rotor scale and is connected to the preheater;

[0012] Tail coal bunker, located on one side of the calciner;

[0013] The second rotor scale is located in the tail coal bunker;

[0014] A coal delivery mechanism is connected to the discharge end of the second rotor scale and is connected to the decomposition furnace;

[0015] A temperature sensor is provided in the discharge port of the preheater;

[0016] The control component is arranged at one side of the decomposition furnace and is respectively connected with the first rotor scale, the feeding mechanism, the second rotor scale, the coal feeding mechanism and the temperature sensor.

[0017] Furthermore, the preheater includes a multi-stage cyclone, a first feed pipe arranged on the multi-stage cyclone and connected to the feeding mechanism, and a second feed pipe arranged on the multi-stage cyclone and connected to the decomposition furnace.

[0018] Furthermore, the multi-stage cyclone includes a C1 cyclone, a C2 cyclone, a C3 cyclone, a C4 cyclone and a C5 cyclone which are arranged in sequence from top to bottom, and a material inlet and outlet mechanism is connected between the C1 cyclone, the C2 cyclone, the C3 cyclone, the C4 cyclone and the C5 cyclone.

[0019] Furthermore, the material inlet and outlet mechanism includes a first discharge pipe arranged between the C1 cyclone and the C2 cyclone, a second discharge pipe arranged between the C1 cyclone and the C3 cyclone, a third discharge pipe arranged between the C2 cyclone and the C4 cyclone, and a fourth discharge pipe arranged between the C3 cyclone and the C5 cyclone.

[0020] Furthermore, the material inlet and outlet mechanism also includes a first air inlet pipe connected between the second discharge pipe and the C2 cyclone, a second air inlet pipe connected between the third discharge pipe and the C3 cyclone, and a third air inlet pipe connected between the fourth discharge pipe and the C4 cyclone.

[0021] Furthermore, the first discharge pipe and the second discharge pipe are both provided with discharge valves.

[0022] Furthermore, a second feed pipe is connected between the C4 cyclone and the decomposition furnace; a discharge pipe is connected between the C5 cyclone and the rotary kiln, and a temperature sensor is installed in the discharge pipe and distributed close to the C5 cyclone.

[0023] Furthermore, the feeding mechanism comprises:

[0024] An elevator is connected from the discharge end of the first rotor scale and is connected to the control assembly;

[0025] The auger screw conveyor is connected between the elevator and the first feed pipe and is connected to the control component.

[0026] Furthermore, the coal delivery mechanism includes a delivery pipe arranged at the discharge end of the second rotor scale, and a fan arranged on the delivery pipe, and the fan is connected to the control component.

[0027] Furthermore, a pressure sensor is provided in the feeding pipe, and the control assembly includes:

[0028] Control room;

[0029] The program-controlled computer is arranged in the control room and is respectively connected with the first rotor scale, the feeding mechanism, the pressure sensor, the second rotor scale, the coal feeding mechanism and the temperature sensor.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] The utility model has a simple structure, a scientific and reasonable design, and is easy to use. A temperature sensor is arranged in the discharge end of the preheater of the utility model, and the temperature sensor detects the temperature of the discharge end of the preheater, and transmits the detection result to the control component, and the control component compares the temperature of the discharge end of the preheater with the preset temperature. The control component controls the amount of pulverized coal output by the second rotor scale according to the comparison result, thereby increasing or decreasing the pulverized coal in the decomposition furnace and controlling the temperature of the discharge end of the preheater. Moreover, the temperature fluctuation in the decomposition furnace can be effectively reduced by controlling the control component. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the utility model.

[0033] Figure 2 This is a control block diagram of the utility model.

[0034] Among them, the names corresponding to the figure numbers are: 1. decomposition furnace; 2. preheater; 3. raw material bin; 4. first rotor scale; 5. feeding mechanism; 6. tail coal bin; 7. second rotor scale; 8. coal feeding mechanism; 9. temperature sensor; 10. control component; 11. first feed pipe; 12. C1 cyclone; 13. C2 cyclone; 14. C3 cyclone; 15. C4 cyclone; 16. C5 cyclone; 17. first discharge pipe; 18. second discharge pipe; 19. third discharge pipe; 20. fourth discharge pipe; 21. first air inlet pipe; 22. second air inlet pipe; 23. third air inlet pipe; 24. discharge valve; 25. elevator; 26. auger screw conveyor; 30. feeding pipe; 31. fan; 32. pressure sensor; 33. control room; 34. programmable computer; 36. second feed pipe; 37. rotary kiln. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore they cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Example 1.

[0039] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0040] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0041] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0042] A first rotor scale 4 is provided in the raw material bin 3;

[0043] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0044] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0045] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0046] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0047] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0048] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0049] The cement material in the raw material bin 3 of the utility model is in the first rotor scale 4, and the cement material to be transported is weighed by the first rotor scale 4, and is transported to the preheater 2 through the feeding mechanism 5 after the weighing is completed. The cement material enters the decomposition furnace 1 through the preheater 2 for decomposition reaction. At the same time, the second rotor scale 7 in the tail coal bin 6 weighs the coal powder, and after the weighing is completed, the coal powder is transported to the coal feeding mechanism 8, so as to control the amount of the coal powder, and the coal powder is sent to the decomposition furnace 1 through the coal feeding mechanism 8, so as to facilitate the cement material and the coal powder to fully react.

[0050] When the utility model is in use, a temperature sensor 9 is arranged at the discharge port of the preheater 2. The temperature sensor 9 detects the discharge temperature of the cement clinker in real time and transmits the detection result to the control component 10. When the temperature detected by the temperature sensor 9 is lower than the preset value, the control component 10 controls the weighing ratio of the first rotor scale 4 so that the weight of the cement material entering the preheater 2 remains consistent. At the same time, the second rotor scale 7 is controlled so that the weight of the coal powder weighed by the second rotor scale 7 is increased, thereby increasing the amount of coal powder in the decomposition furnace 1 and increasing the temperature at the outlet of the preheater 2. By increasing or decreasing the coal powder, it is possible to ensure that the temperature at the outlet of the preheater 2 fluctuates within a small range and also reduce the waste of coal powder.

[0051] Example 2.

[0052] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0053] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0054] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0055] A first rotor scale 4 is provided in the raw material bin 3;

[0056] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0057] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0058] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0059] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0060] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0061] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0062] The preheater 2 includes a multi-stage cyclone, a first feed pipe 11 disposed on the multi-stage cyclone and connected to the feeding mechanism 5 , and a second feed pipe 36 disposed on the multi-stage cyclone and connected to the decomposition furnace 1 .

[0063] Based on Example 1, this Example 2 provides a more preferred structure of the preheater 2, specifically: the preheater 2 includes a multi-stage cyclone, a first feed pipe 11 arranged on the multi-stage cyclone and connected to the feeding mechanism 5, and a second feed pipe 36 arranged on the multi-stage cyclone and connected to the decomposition furnace 1.

[0064] The multi-stage cyclone of the utility model is connected to the feeding mechanism 5 through the first feeding pipe 11. The feeding mechanism 5 feeds the cement material into the multi-stage cyclone through the first feeding pipe 11, so that the cement material can enter the multi-stage cyclone for reaction.

[0065] The multi-stage cyclone of the utility model is connected to the decomposition furnace 1 through the second feed pipe 36, so that the cement material in the multi-stage cyclone can be easily fed into the decomposition furnace 1 for reaction.

[0066] Example 3.

[0067] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0068] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0069] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0070] A first rotor scale 4 is provided in the raw material bin 3;

[0071] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0072] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0073] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0074] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0075] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0076] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0077] The preheater 2 includes a multi-stage cyclone, a first feed pipe 11 disposed on the multi-stage cyclone and connected to the feeding mechanism 5 , and a second feed pipe 36 disposed on the multi-stage cyclone and connected to the decomposition furnace 1 .

[0078] The multi-stage cyclone includes a C1 cyclone 12, a C2 cyclone 13, a C3 cyclone 14, a C4 cyclone 15 and a C5 cyclone 16 which are arranged in sequence from top to bottom, and a material inlet and outlet mechanism is connected between the C1 cyclone 12, the C2 cyclone 13, the C3 cyclone 14, the C4 cyclone 15 and the C5 cyclone 16.

[0079] Based on Example 2, this Example 3 provides a more preferred structure of a multi-stage cyclone, specifically: the multi-stage cyclone includes a C1 cyclone 12, a C2 cyclone 13, a C3 cyclone 14, a C4 cyclone 15 and a C5 cyclone 16 which are arranged in sequence from top to bottom, and the C1 cyclone 12, the C2 cyclone 13, the C3 cyclone 14, the C4 cyclone 15 and the C5 cyclone 16 are connected by a material inlet and outlet mechanism.

[0080] The C1 cyclone 12, C2 cyclone 13, C3 cyclone 14, C4 cyclone 15 and C5 cyclone 16 of the utility model can facilitate the storage of cement materials, so that the cement materials can fully react in the C1 cyclone 12, C2 cyclone 13, C3 cyclone 14, C4 cyclone 15 and C5 cyclone 16, and the C1 cyclone 12, C2 cyclone 13, C3 cyclone 14, C4 cyclone 15 and C5 cyclone 16 are provided with a material inlet and outlet mechanism for conveying cement materials and reaction gases, and the material inlet and outlet mechanism facilitates the cement materials to enter the C1 cyclone 12, C2 cyclone 13, C3 cyclone 14, C4 cyclone 15 and C5 cyclone 16 in sequence for reaction.

[0081] Example 4.

[0082] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0083] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0084] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0085] A first rotor scale 4 is provided in the raw material bin 3;

[0086] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0087] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0088] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0089] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0090] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0091] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0092] The preheater 2 includes a multi-stage cyclone, a first feed pipe 11 disposed on the multi-stage cyclone and connected to the feeding mechanism 5 , and a second feed pipe 36 disposed on the multi-stage cyclone and connected to the decomposition furnace 1 .

[0093] The multi-stage cyclone includes a C1 cyclone 12, a C2 cyclone 13, a C3 cyclone 14, a C4 cyclone 15 and a C5 cyclone 16 which are arranged in sequence from top to bottom, and a material inlet and outlet mechanism is connected between the C1 cyclone 12, the C2 cyclone 13, the C3 cyclone 14, the C4 cyclone 15 and the C5 cyclone 16.

[0094] The material inlet and outlet mechanism includes a first discharge pipe 17 disposed between the C1 cyclone 12 and the C2 cyclone 13, a second discharge pipe 18 disposed between the C1 cyclone 12 and the C3 cyclone 14, a third discharge pipe 19 disposed between the C2 cyclone 13 and the C4 cyclone 15, and a fourth discharge pipe 20 disposed between the C3 cyclone 14 and the C5 cyclone 16.

[0095] Based on Example 3, this Example 4 provides a more preferred structure of the material inlet and outlet mechanism, specifically: the material inlet and outlet mechanism includes a first discharge pipe 17 arranged between the C1 cyclone 12 and the C2 cyclone 13, a second discharge pipe 18 arranged between the C1 cyclone 12 and the C3 cyclone 14, a third discharge pipe 19 arranged between the C2 cyclone 13 and the C4 cyclone 15, and a fourth discharge pipe 20 arranged between the C3 cyclone 14 and the C5 cyclone 16.

[0096] The first discharge pipe 17 of the utility model is arranged between the C1 cyclone 12 and the C2 cyclone 13, so that the cement material in the first feed pipe 11 can enter the C1 cyclone 12 and the C2 cyclone 13 respectively, thereby improving the production efficiency of cement clinker.

[0097] The second discharge pipe 18 of the utility model is arranged between the C1 cyclone 12 and the C3 cyclone 14. The second discharge pipe 18 can transport the cement material in the C1 cyclone 12 to the C3 cyclone 14. A fourth discharge pipe 20 is arranged between the C3 cyclone 14 and the C5 cyclone 16. The fourth discharge pipe 20 can facilitate the transportation of the cement material in the C3 cyclone 14 to the C5 cyclone 16 so as to facilitate the reaction between the cement material and the reaction gas.

[0098] The third discharge pipe 19 of the utility model is arranged between the C2 cyclone 13 and the C4 cyclone 15. The third discharge pipe 19 can facilitate the transportation of cement materials in the C2 cyclone 13 to the C4 cyclone 15, and the cement materials in the C4 cyclone 15 enter the decomposition furnace 1 through the second feed pipe 36, so as to facilitate the decomposition of the cement materials. The cement materials of the utility model can enter different cyclones for reaction through the material inlet and outlet mechanism, which can improve the reaction efficiency of the cement materials.

[0099] Example 5.

[0100] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0101] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0102] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0103] A first rotor scale 4 is provided in the raw material bin 3;

[0104] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0105] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0106] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0107] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0108] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0109] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0110] The preheater 2 includes a multi-stage cyclone, a first feed pipe 11 disposed on the multi-stage cyclone and connected to the feeding mechanism 5 , and a second feed pipe 36 disposed on the multi-stage cyclone and connected to the decomposition furnace 1 .

[0111] The multi-stage cyclone includes a C1 cyclone 12, a C2 cyclone 13, a C3 cyclone 14, a C4 cyclone 15 and a C5 cyclone 16 which are arranged in sequence from top to bottom, and a material inlet and outlet mechanism is connected between the C1 cyclone 12, the C2 cyclone 13, the C3 cyclone 14, the C4 cyclone 15 and the C5 cyclone 16.

[0112] The material inlet and outlet mechanism includes a first discharge pipe 17 disposed between the C1 cyclone 12 and the C2 cyclone 13, a second discharge pipe 18 disposed between the C1 cyclone 12 and the C3 cyclone 14, a third discharge pipe 19 disposed between the C2 cyclone 13 and the C4 cyclone 15, and a fourth discharge pipe 20 disposed between the C3 cyclone 14 and the C5 cyclone 16.

[0113] The material inlet and outlet mechanism also includes a first air inlet pipe 21 connected between the second discharge pipe 18 and the C2 cyclone 13 , a second air inlet pipe 22 connected between the third discharge pipe 19 and the C3 cyclone 14 , and a third air inlet pipe 23 connected between the fourth discharge pipe 20 and the C4 cyclone 15 .

[0114] Based on Example 4, this Example 5 provides a more preferred structure of the material inlet and outlet mechanism, specifically: the material inlet and outlet mechanism also includes a first air inlet pipe 21 connected between the second discharge pipe 18 and the C2 cyclone 13, a second air inlet pipe 22 connected between the third discharge pipe 19 and the C3 cyclone 14, and a third air inlet pipe 23 connected between the fourth discharge pipe 20 and the C4 cyclone 15.

[0115] The reaction gas in the decomposition furnace 1 of the utility model enters the C4 cyclone 15 through the second feed pipe 36, and a part of the reaction gas in the C4 cyclone 15 enters the C2 cyclone 13 through the third discharge pipe 19, and reacts with the cement material in the third discharge pipe 19 when entering, and the other part of the reaction gas enters the fourth discharge pipe 20 through the third air inlet pipe 23 to react with the cement material in the fourth discharge pipe 20, and enters the C3 cyclone 14 through the fourth discharge pipe 20, and at the same time, the C3 cyclone 14 and the third discharge pipe 19 are connected through the second air inlet pipe 22, so that the third discharge pipe 19 is connected to the C3 cyclone 14. Part of the reaction gas enters the C2 cyclone 13, and the other part enters the C3 cyclone 14 through the second air inlet pipe 22, so as to facilitate the reaction of the cement material in the C3 cyclone 14. Part of the reaction gas in the C3 cyclone 14 enters the C1 cyclone 12 through the second discharge pipe 18, and the other part enters the C2 cyclone 13 through the first air inlet pipe 21, so as to facilitate the reaction of the cement material in the C2 cyclone 13. At the same time, the reaction gas in the C2 cyclone 13 can enter the C1 cyclone 12 through the first air inlet pipe 21 and the second discharge pipe 18, so as to facilitate the reaction of the cement material.

[0116] Example 6.

[0117] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0118] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0119] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0120] A first rotor scale 4 is provided in the raw material bin 3;

[0121] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0122] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0123] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0124] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0125] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0126] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0127] The preheater 2 includes a multi-stage cyclone, a first feed pipe 11 disposed on the multi-stage cyclone and connected to the feeding mechanism 5 , and a second feed pipe 36 disposed on the multi-stage cyclone and connected to the decomposition furnace 1 .

[0128] The multi-stage cyclone includes a C1 cyclone 12, a C2 cyclone 13, a C3 cyclone 14, a C4 cyclone 15 and a C5 cyclone 16 which are arranged in sequence from top to bottom, and a material inlet and outlet mechanism is connected between the C1 cyclone 12, the C2 cyclone 13, the C3 cyclone 14, the C4 cyclone 15 and the C5 cyclone 16.

[0129] The material inlet and outlet mechanism includes a first discharge pipe 17 disposed between the C1 cyclone 12 and the C2 cyclone 13, a second discharge pipe 18 disposed between the C1 cyclone 12 and the C3 cyclone 14, a third discharge pipe 19 disposed between the C2 cyclone 13 and the C4 cyclone 15, and a fourth discharge pipe 20 disposed between the C3 cyclone 14 and the C5 cyclone 16.

[0130] The first discharge pipe 17 and the second discharge pipe 18 are both provided with a discharge valve 24 .

[0131] Based on the embodiment 4, the embodiment 6 provides a more preferred structure of the first discharge pipe 17, the second discharge pipe 18, the third discharge pipe 19, and the fourth discharge pipe 20. Specifically, the first discharge pipe 17 and the second discharge pipe 18 are both provided with a discharge valve 24. The discharge valve 24 can facilitate the control of the cement material in the C1 cyclone 12 and the C2 cyclone 13, so that the cement material can fully react in the C1 cyclone 12 and the C2 cyclone 13.

[0132] Example 7.

[0133] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0134] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0135] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0136] A first rotor scale 4 is provided in the raw material bin 3;

[0137] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0138] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0139] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0140] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0141] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0142] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0143] The preheater 2 includes a multi-stage cyclone, a first feed pipe 11 disposed on the multi-stage cyclone and connected to the feeding mechanism 5 , and a second feed pipe 36 disposed on the multi-stage cyclone and connected to the decomposition furnace 1 .

[0144] The multi-stage cyclone includes a C1 cyclone 12, a C2 cyclone 13, a C3 cyclone 14, a C4 cyclone 15 and a C5 cyclone 16 which are arranged in sequence from top to bottom, and a material inlet and outlet mechanism is connected between the C1 cyclone 12, the C2 cyclone 13, the C3 cyclone 14, the C4 cyclone 15 and the C5 cyclone 16.

[0145] The material inlet and outlet mechanism includes a first discharge pipe 17 disposed between the C1 cyclone 12 and the C2 cyclone 13, a second discharge pipe 18 disposed between the C1 cyclone 12 and the C3 cyclone 14, a third discharge pipe 19 disposed between the C2 cyclone 13 and the C4 cyclone 15, and a fourth discharge pipe 20 disposed between the C3 cyclone 14 and the C5 cyclone 16.

[0146] The material inlet and outlet mechanism also includes a first air inlet pipe 21 connected between the second discharge pipe 18 and the C2 cyclone 13 , a second air inlet pipe 22 connected between the third discharge pipe 19 and the C3 cyclone 14 , and a third air inlet pipe 23 connected between the fourth discharge pipe 20 and the C4 cyclone 15 .

[0147] The first discharge pipe 17 , the second discharge pipe 18 , the third discharge pipe 19 and the fourth discharge pipe 20 are all provided with discharge valves 24 .

[0148] The second feed pipe 36 is connected between the C4 cyclone 15 and the decomposition furnace 1 ; a discharge pipe 38 is connected between the C5 cyclone 16 and the rotary kiln 37 , and the temperature sensor 9 is installed in the discharge pipe 38 and distributed close to the C5 cyclone 16 .

[0149] This embodiment 7 provides a more preferred structure of the second feed pipe 36 on the basis of embodiment 3, embodiment 4, embodiment 5 and embodiment 6, specifically: the second feed pipe 36 is connected between the C4 cyclone 15 and the decomposition furnace 1; a discharge pipe 38 is connected between the C5 cyclone 16 and the rotary kiln 37, and the temperature sensor 9 is installed in the discharge pipe 38 and distributed close to the C5 cyclone 16.

[0150] The second feed pipe 36 of the utility model is arranged between the C4 cyclone 15 and the decomposition furnace 1, which can facilitate the cement material in the C4 cyclone 15 to enter the decomposition furnace 1 for decomposition reaction. A discharge pipe 38 is connected between the C5 cyclone 16 and the rotary kiln 37. The discharge pipe 38 can facilitate the cement material in the C5 cyclone 16 to enter the rotary kiln 37. At the same time, the discharge pipe 38 can facilitate the installation of the temperature sensor 9, and the outlet temperature of the cement material is detected by the temperature sensor 9.

[0151] Example 8.

[0152] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0153] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0154] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0155] A first rotor scale 4 is provided in the raw material bin 3;

[0156] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0157] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0158] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0159] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0160] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0161] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0162] The feeding mechanism 5 comprises:

[0163] The elevator 25 is connected to the discharge end of the first rotor scale 4;

[0164] The auger screw conveyor 26 is connected between the elevator 25 and the first feed pipe 11 and is connected to the control component 10 .

[0165] This embodiment 8 provides a more preferred structure of the feeding mechanism 5 based on the embodiment 1, specifically: the feeding mechanism 5 includes:

[0166] The elevator 25 is connected to the discharge end of the first rotor scale 4 and is connected to the control assembly 10;

[0167] The auger screw conveyor 26 is connected between the elevator 25 and the first feed pipe 11 and is connected to the control component 10 .

[0168] The input end of the elevator 25 of the utility model is connected to the discharge end of the first rotor scale 4, which can facilitate the transportation of cement materials. At the same time, the auger screw conveyor 26 is connected between the elevator 25 and the first feed pipe 11. The auger screw conveyor 26 can uniformly feed the cement materials into the preheater 2 through the first feed pipe 11. The elevator 25 and the auger screw conveyor 26 are both electrically connected to the control component 10, so that the conveying speed of the elevator 25 and the auger screw conveyor 26 can be controlled by the control component 10, thereby avoiding excessive cement materials in the preheater 2.

[0169] Example 9.

[0170] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0171] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0172] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0173] A first rotor scale 4 is provided in the raw material bin 3;

[0174] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0175] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0176] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0177] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0178] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0179] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0180] The coal feeding mechanism 8 includes a feeding pipe 30 provided at the discharge end of the second rotor scale 7 , and a fan 31 provided on the feeding pipe 30 , and the fan 31 is connected to the control component 10 .

[0181] Based on Example 1, this Example 9 provides a more preferred structure of the coal delivery mechanism 8, specifically: the coal delivery mechanism 8 includes a delivery pipe 30 arranged at the discharge end of the second rotor scale 7, and a fan 31 arranged on the delivery pipe 30, and the fan 31 is connected to the control component 10.

[0182] The utility model feed pipe 30 is connected from the discharge end of the second rotor scale 7, and a fan 31 is provided on the feed pipe 30, through which the pulverized coal in the feed pipe 30 can be blown into the decomposition furnace 1, so as to facilitate the decomposition reaction of the cement material in the decomposition furnace 1, and by electrically connecting the fan 31 with the control component 10, the speed at which the pulverized coal enters the decomposition furnace 1 can be controlled, so that the pulverized coal can be added conveniently.

[0183] Example 10.

[0184] like Figure 1-2 As shown, the utility model provides a cement decomposition furnace coal quantity control system, including a decomposition furnace 1 and a rotary kiln 37, and also includes:

[0185] The preheater 2 is connected to the decomposition furnace 1 and the rotary kiln 37 respectively;

[0186] A raw material bin 3 is provided on one side of the decomposition furnace 1;

[0187] A first rotor scale 4 is provided in the raw material bin 3;

[0188] A feeding mechanism 5 is connected to the discharge end of the first rotor scale 4 and is connected to the preheater 2;

[0189] The tail coal bunker 6 is arranged on one side of the calciner 1;

[0190] The second rotor scale 7 is arranged in the tail coal bunker 6;

[0191] A coal delivery mechanism 8 is connected to the discharge end of the second rotor scale 7 and is connected to the decomposition furnace 1;

[0192] The temperature sensor 9 is arranged in the discharge port of the preheater 2;

[0193] The control assembly 10 is arranged at one side of the decomposition furnace 1 and is connected to the first rotor scale 4, the feeding mechanism 5, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0194] The coal feeding mechanism 8 includes a feeding pipe 30 provided at the discharge end of the second rotor scale 7 , and a fan 31 provided on the feeding pipe 30 , and the fan 31 is connected to the control component 10 .

[0195] A pressure sensor 32 is provided in the feeding pipe 30, and the control assembly 10 includes:

[0196] Control room 33;

[0197] The program-controlled computer 34 is arranged in the control room 33 and is connected to the first rotor scale 4, the feeding mechanism 5, the pressure sensor 32, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9 respectively.

[0198] A pressure sensor 32 is provided in the feed pipe 30 of the utility model. The pressure sensor 32 can detect the wind pressure in the feed pipe 30 at all times, so as to prevent the feed pipe 30 from being blocked by coal powder. When the pressure sensor 32 detects that the pressure in the feed pipe 30 is higher than a preset value, the pressure sensor 32 transmits the detection result to the control component 10, and prompts the staff to detect the control component 10 through the control component 10.

[0199] The control assembly 10 of the utility model includes: a control room 33, a programmable computer 34 arranged in the control room 33, the programmable computer 34 is respectively connected to the first rotor scale 4, the feeding mechanism 5, the pressure sensor 32, the second rotor scale 7, the coal feeding mechanism 8 and the temperature sensor 9, specifically, the programmable computer 34 can display the numerical values ​​of the temperature sensor 9 and the pressure sensor 32, and the weighing weight of the first rotor scale 4 and the second rotor scale 7 can be adjusted by the programmable computer 34 to facilitate the control of the input amount of cement material and coal powder, and the feeding mechanism 5 and the coal feeding mechanism 8 can be controlled by the programmable computer 34 to control the conveying of the cement clinker and the temperature in the decomposition furnace to avoid large fluctuations.

[0200] The working principle of this utility model:

[0201] When in use, the program-controlled computer 34 controls the first rotor scale 4 to weigh the weight of the cement material, and at the same time, the elevator 25 and the auger screw conveyor 26 are started by the program-controlled computer 34. The elevator 25 conveys the cement material weighed by the first rotor scale 4 to the auger screw conveyor 26. The auger screw conveyor 26 conveys the cement material into the preheater 2 through the first feeding pipe 11, so that the cement material can enter the preheater 2 evenly. The program-controlled computer 34 starts the second rotor scale 7, and the second rotor scale 7 controls the amount of pulverized coal entering the decomposition furnace 1. The fan 31 is started by the program-controlled computer 34, and the fan 31 blows the pulverized coal in the feeding pipe 30 into the decomposition furnace 1 at a uniform speed, so as to facilitate the control of the amount of pulverized coal in the decomposition furnace 1.

[0202] At the same time, a temperature sensor 9 is provided in the discharge port of the preheater 2. The temperature of the discharge end of the C5 cyclone 16 is detected in real time by the temperature sensor 9, and the detection result is transmitted to the program-controlled computer 34. The program-controlled computer 34 compares the temperature detected at the discharge end of the C5 cyclone 16 with the preset value and obtains the difference. When the temperature at the discharge end of the C5 cyclone 16 is lower than the preset value, the program-controlled computer 34 controls the second rotor scale 7 to increase the output of the coal powder according to the difference, so that the temperature at the discharge end of the C5 cyclone 16 is close to the preset value. If the temperature at the discharge end of the C5 cyclone 16 is higher than the preset value, the program-controlled computer 34 controls the second rotor scale 7 to reduce the output of the coal powder according to the difference, thereby reducing the temperature of the discharge end of the C5 cyclone 16 to make it close to the preset value, thereby facilitating the control of the temperature of the discharge end of the C5 cyclone 16.

[0203] The decomposition furnace 1, the first rotor scale 4, the second rotor scale 7, the temperature sensor 9, the discharge valve 24, the elevator 25, the fan 31, the pressure sensor 32, the program-controlled computer 34, and the rotary kiln 37 used in the utility model are all existing technologies and can be directly purchased and used on the market. Therefore, the structure, circuit and control principle of the decomposition furnace 1, the first rotor scale 4, the second rotor scale 7, the temperature sensor 9, the discharge valve 24, the elevator 25, the fan 31, the pressure sensor 32, the program-controlled computer 34, and the rotary kiln 37 are not described in detail here.

[0204] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solution of the present invention, rather than limiting it, and certainly not limiting the patent scope of the present invention; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention; that is to say, any changes or embellishments made to the main design concept and spirit of the present invention that have no substantive significance, and the technical problems they solve are still consistent with the present invention, should be included in the protection scope of the present invention; in addition, the direct or indirect application of the technical solution of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. A cement decomposition furnace coal quantity control system, comprising a decomposition furnace (1) and a rotary kiln (37), characterized in that: Also includes: A preheater (2) is connected to the decomposition furnace (1) and the rotary kiln (37) respectively; A raw material bin (3) is provided on one side of the decomposition furnace (1); A first rotor scale (4) is arranged in the raw material bin (3); A feeding mechanism (5) connected to the discharge end of the first rotor scale (4) and connected to the preheater (2); A tail coal bunker (6) is provided on one side of the calciner (1); A second rotor scale (7) is arranged in the tail coal bunker (6); A coal delivery mechanism (8) connected to the discharge end of the second rotor scale (7) and connected to the decomposition furnace (1); A temperature sensor (9) is disposed in the discharge port of the preheater (2); The control component (10) is arranged on one side of the decomposition furnace (1) and is respectively connected to the first rotor scale (4), the feeding mechanism (5), the second rotor scale (7), the coal feeding mechanism (8) and the temperature sensor (9).

2. A cement decomposition furnace coal quantity control system according to claim 1, characterized in that: The preheater (2) comprises a multi-stage cyclone, a first feed pipe (11) arranged on the multi-stage cyclone and connected to the feed mechanism (5), and a second feed pipe (36) arranged on the multi-stage cyclone and connected to the decomposition furnace (1).

3. A cement decomposition furnace coal quantity control system according to claim 2, characterized in that: The multi-stage cyclone comprises a C1 cyclone (12), a C2 cyclone (13), a C3 cyclone (14), a C4 cyclone (15) and a C5 cyclone (16) which are arranged in sequence from top to bottom, and a material inlet and outlet mechanism is connected between the C1 cyclone (12), the C2 cyclone (13), the C3 cyclone (14), the C4 cyclone (15) and the C5 cyclone (16).

4. A cement decomposition furnace coal quantity control system according to claim 3, characterized in that: The material inlet and outlet mechanism comprises a first discharge pipe (17) provided between the C1 cyclone (12) and the C2 cyclone (13), a second discharge pipe (18) provided between the C1 cyclone (12) and the C3 cyclone (14), a third discharge pipe (19) provided between the C2 cyclone (13) and the C4 cyclone (15), and a fourth discharge pipe (20) provided between the C3 cyclone (14) and the C5 cyclone (16).

5. A cement decomposition furnace coal quantity control system according to claim 4, characterized in that: The material inlet and outlet mechanism further comprises a first air inlet pipe (21) connected between the second discharge pipe (18) and the C2 cyclone cylinder (13), a second air inlet pipe (22) connected between the third discharge pipe (19) and the C3 cyclone cylinder (14), and a third air inlet pipe (23) connected between the fourth discharge pipe (20) and the C4 cyclone cylinder (15).

6. A cement decomposition furnace coal quantity control system according to claim 4, characterized in that: The first discharge pipe (17) and the second discharge pipe (18) are both provided with discharge valves (24).

7. A cement decomposition furnace coal quantity control system according to any one of claims 3 to 6, characterized in that: The second feed pipe (36) is connected between the C4 cyclone (15) and the decomposition furnace (1); a discharge pipe (38) is connected between the C5 cyclone (16) and the rotary kiln (37); and a temperature sensor (9) is installed in the discharge pipe (38) and is distributed close to the C5 cyclone (16).

8. A cement decomposition furnace coal quantity control system according to claim 1, characterized in that: The feeding mechanism (5) comprises: An elevator (25) is connected to the discharge end of the first rotor scale (4) and is connected to the control assembly (10); The auger screw conveyor (26) is connected between the elevator (25) and the first feed pipe (11) and is connected to the control component (10).

9. A cement decomposition furnace coal quantity control system according to claim 1, characterized in that: The coal feeding mechanism (8) comprises a feeding pipe (30) arranged at the discharge end of the second rotor scale (7), and a fan (31) arranged on the feeding pipe (30), wherein the fan (31) is connected to the control component (10).

10. A cement decomposition furnace coal quantity control system according to claim 1, characterized in that: A pressure sensor (32) is provided in the feeding pipe (30), and the control assembly (10) comprises: Control room (33); The program-controlled computer (34) is arranged in the control room (33) and is respectively connected to the first rotor scale (4), the feeding mechanism (5), the pressure sensor (32), the second rotor scale (7), the coal feeding mechanism (8) and the temperature sensor (9).

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