Cement preheating device

Abstract

The utility model provides a cement preheating device, and relates to the technical field of cement production, the cement preheating device comprises a preheating tank body, the top of the preheating tank body is provided with an exhaust pipe, the top of the preheating tank body is communicated with an air inlet pipe, one end of the air inlet pipe is communicated with a feeding pipe for feeding raw materials, and one end of the feeding pipe is communicated with an air blowing pipe; the other end of the air blowing pipe is communicated with an air blowing pump, the air inlet end of the air blowing pump is communicated with one end of the air inlet pipe, when the feeding pipe is blocked, the air blowing pump is communicated with the air inlet pipe, hot air in the air inlet pipe is pumped into the air blowing pipe, and raw materials in the feeding pipe can be effectively pressurized and sprayed through the pumped hot air; and meanwhile, the thermal conversion efficiency of the raw materials is not affected, and the feeding efficiency of the feeding pipe is effectively guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of cement production, and in particular to a cement preheating device. Background Art

[0002] In the cement production process, cement raw meal will be added into the air duct of the preheater, and the waste heat will be used to preheat the cement raw meal. The preheating and partial decomposition of the raw meal will be completed by the preheater, replacing some functions of the rotary kiln.

[0003] At present, in the process of preheating raw materials, the preheating device is prone to blockage when the raw materials are scattered, resulting in the hot air being directly discharged without heat exchange with the raw materials, causing hot air loss, and uneven material distribution during material spreading, resulting in low heat exchange efficiency between some raw materials and hot air. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a cement preheating device, which can solve the technical problems of uniform heat exchange between raw materials and hot air when spreading and blockage caused by spreading.

[0005] The embodiment of the present application provides a cement preheating device, comprising a preheating tank body, an exhaust pipe is arranged on the top of the preheating tank body, an air intake pipe is connected to the top of the preheating tank body, and one end of the air intake pipe is connected to a feed pipe for raw material feeding;

[0006] One end of the feed pipe is connected to an air blowing pipe, the other end of the air blowing pipe is connected to an air blow pump, and the air inlet end of the air blow pump is connected to one end of the air inlet pipe.

[0007] Furthermore, a vibration motor is provided at the discharge end of the feed pipe.

[0008] Furthermore, one end of the feed pipe communicating with the air inlet pipe is arranged in a flared fan shape.

[0009] Furthermore, an opening and closing assembly is provided between the air inlet end of the blower pump and the discharge end of the feed pipe. The opening and closing assembly is rotatably provided on the air inlet pipe. The opening and closing assembly includes a rotating plate and a servo motor. The rotating plate is rotatably installed in the air inlet pipe, and the servo motor is fixedly provided outside the air inlet pipe. The servo motor drives the rotating plate to rotate.

[0010] Furthermore, the inner wall of the preheating tank is fixedly provided with spiral blades.

[0011] Furthermore, the lowest point of the air inlet end of the exhaust pipe is lower than the lowest point of the spiral blade.

[0012] Beneficial effects of the utility model:

[0013] The blowing pipe provided by the utility model is connected with the air inlet pipe through the blower pump when the feed pipe is blocked, and the hot air in the air inlet pipe is pumped into the blowing pipe, which can effectively pressurize and spray the raw material in the feed pipe through the pumped hot air, and at the same time will not affect the thermal conversion efficiency of the raw material, effectively ensuring the feeding efficiency of the feed pipe.

[0014] By arranging the discharge end of the feed pipe into a flared fan-shaped arrangement, the problem of clogging of the feed pipe can be effectively reduced and the raw material can be sprayed over a larger area when the feed pipe is spreading the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of an embodiment of the utility model;

[0018] Figure 3 The figure is a schematic cross-sectional view of the air intake pipe according to an embodiment of the present invention.

[0019] The reference numerals are:

[0020] 1. Preheating tank body; 11. Spiral blades; 2. Exhaust pipe; 3. Inlet pipe; 4. Feed pipe; 41. Vibration motor; 5. Blowing pipe; 6. Blower pump; 7. Opening and closing assembly; 71. Rotating plate; 72. Servo motor. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The embodiment of the present application discloses a cement preheating device.

[0028] Reference Figure 1-3 A cement preheating device comprises a preheating tank body 1, an exhaust pipe 2 is arranged on the top of the preheating tank body 1, an air inlet pipe 3 is connected to the top of the preheating tank body 1, and a feed pipe 4 for raw material feeding is connected to one end of the air inlet pipe 3;

[0029] One end of the feed pipe 4 is connected to the air blowing pipe 5, and the other end of the air blowing pipe 5 is connected to the air pump 6, and the air inlet end of the air pump 6 is connected to one end of the air inlet pipe 3;

[0030] When in use, the cement raw meal is discharged from the feed pipe 4 and enters the air inlet pipe 3. The air inlet end of the air inlet pipe 3 is connected with the flue gas duct at the tail of the kiln, so that the hot air in the tail of the kiln is blown upward into the preheating tank body 1 through the air inlet pipe 3. At the same time, the raw meal discharged from the feed pipe 4 into the air inlet pipe 3 is brought into the preheating tank body 1 for heat exchange between the raw meal and the hot air, thereby saving the utilization of resources. When the feed pipe 4 is blocked, the blower pump 6 is connected with the air inlet pipe 3 to pump the hot air in the air inlet pipe 3 into the blowing pipe 5, which can effectively pressurize and spray the raw meal in the feed pipe 4 through the pumped hot air, and at the same time will not affect the thermal conversion efficiency of the raw meal, thereby effectively ensuring the feeding efficiency of the feed pipe 4.

[0031] Reference Figure 1 A vibration motor 41 is provided at the discharge end of the feed pipe 4 , which can effectively vibrate and loosen the raw material continuously to prevent the raw material from being blocked in the feed pipe 4 .

[0032] More specifically, one end of the feed pipe 4 communicating with the air inlet pipe 3 is arranged in a flared fan shape, which can effectively reduce the problem of clogging of the feed pipe 4 and enable the feed pipe 4 to spray the raw material over a larger area when spreading the material.

[0033] Reference Figure 1-3 An opening and closing assembly 7 is arranged between the air inlet end of the blower pump 6 and the discharge end of the feed pipe 4. The opening and closing assembly 7 is rotatably arranged on the air inlet pipe 3. The opening and closing assembly 7 includes a rotating plate 71 and a servo motor 72. The rotating plate 71 is rotatably installed in the air inlet pipe 3. The servo motor 72 is fixedly arranged outside the air inlet pipe 3. The servo motor 72 drives the rotating plate 71 to rotate. When in use, when the feed pipe 4 is blocked, the blower pump 6 needs to pump the hot air in the air inlet pipe 3 and spray it from the air blowing pipe 5. The servo motor 72 drives the rotating plate 71 to rotate. The movable plate 71 rotates horizontally, so that the raw material sprayed out of the feed pipe 4 will not be sprayed back into the kiln tail due to the boosting effect of the blower pump 6, which effectively ensures that the raw material in the feed pipe 4 is always transported to the preheating tank 1, and avoids the collision between the wind pressure of the blowing pipe 5 and the wind pressure of the air intake pipe 3, resulting in insufficient air pressure when the feed pipe 4 is unblocked, causing the raw material sprayed out of the feed pipe 4 to fall into the kiln tail. After the unblocking is completed, the servo motor 72 is driven to rotate the rotating plate 71 to a state where the air intake pipe 3 has the maximum flow.

[0034] Reference Figure 2 The inner wall of the preheating tank 1 is also fixedly provided with spiral blades 11, which can effectively prolong the heat exchange time between the raw material and the hot air and improve the heat exchange efficiency.

[0035] Reference Figure 2The lowest point of the air inlet end of the exhaust pipe 2 is lower than the lowest point of the spiral blade 11, so as to prevent the raw material just transported into the preheating tank 1 from being directly carried out by the flue gas.

[0036] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cement preheating device, characterized in that: It comprises a preheating tank body, the top of which is provided with an exhaust pipe, the top of which is connected with an air intake pipe, and one end of which is connected with a feed pipe for feeding raw materials; One end of the feed pipe is connected to an air blowing pipe, the other end of the air blowing pipe is connected to an air blow pump, and the air inlet end of the air blow pump is connected to one end of the air inlet pipe.

2. A cement preheating device according to claim 1, characterized in that: A vibration motor is arranged at the discharge end of the feed pipe.

3. A cement preheating device according to claim 1, characterized in that: One end of the feed pipe communicating with the air inlet pipe is arranged in a flared fan shape.

4. A cement preheating device according to claim 1, characterized in that: An opening and closing assembly is arranged between the air inlet end of the blower pump and the discharge end of the feed pipe. The opening and closing assembly is rotatably arranged on the air inlet pipe. The opening and closing assembly includes a rotating plate and a servo motor. The rotating plate is rotatably installed in the air inlet pipe, and the servo motor is fixedly arranged outside the air inlet pipe. The servo motor drives the rotating plate to rotate.

5. A cement preheating device according to claim 1, characterized in that: The inner wall of the preheating tank is also fixedly provided with spiral blades.

6. A cement preheating device according to claim 5, characterized in that: The lowest point of the air inlet end of the exhaust pipe is lower than the lowest point of the spiral blade.

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