Cooling device for a cement mill

Abstract

The utility model relates to cement production equipment technical field especially relates to a cooling device of cement mill, including rotary drum inner cooling mechanism, rotary drum outer cooling mechanism, the rotary drum outer cooling mechanism includes the coiled spray pipe of surrounding setting in the rotary drum outer peripheral side of cement mill body, the water tank of water supply for coiled spray pipe, water pump and pipe fitting, on the coiled spray pipe even length interval is separately provided with a plurality of spray heads, the spray head is to the rotary drum outer wall of cement mill body direction, the utility model discloses adopt the mode that rotary drum inner cooling and rotary drum outer cooling are combined, realize the synchronous cooling of cement mill inside and outside, reach effectively improve the cooling effect, in addition, utilize cloth bag dust collector to carry out the collection to the dust that blows and cools down, can reduce dust environmental pollution while intercepting material, wherein utilize the water collecting groove can be used to collect the water after heating, can be used for heating or drying.

Description

Technical Field

[0001] This utility model relates to the field of cement production equipment technology, and in particular to a cooling device for a cement mill. Background Technology

[0002] A conventional cement mill is a device that further pulverizes materials after they have been crushed. A cement mill consists of a cylinder and a support base, with the cylinder and support base rotatably connected. During operation, the cement mill heats up due to friction. Excessive temperature reduces the grinding rate of the material and also affects the service life of the cement mill.

[0003] Existing methods for cooling cement mills, such as spraying water into the mill, are difficult to control and can easily cause cement to clump. Another method is air cooling, but the airflow can carry away some cement dust, affecting air quality. Therefore, a new type of cement mill cooling device is needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a cooling device for a cement mill, which solves the problem of limited cooling effect of conventional cement mills.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a cooling device for a cement mill, including an internal cooling mechanism for conveying cooling air into the cement mill body and an external cooling mechanism for cooling the outer wall of the cement mill body by spraying water.

[0007] The internal cooling mechanism of the rotary drum includes a blower and an air supply pipe that supply air to one end of the cement mill body; and a bag filter is connected to the other end of the cement mill body through a negative pressure pipe.

[0008] The external cooling mechanism of the rotating drum includes a coiled spray pipe surrounding the outer periphery of the rotating drum of the cement mill body, a water tank for supplying water to the coiled spray pipe, a water pump, and pipe fittings; multiple nozzles are arranged at uniform length intervals on the coiled spray pipe, and the nozzles face the outer wall of the rotating drum of the cement mill body.

[0009] Furthermore, a discharge valve is installed at the bottom of the dust collection chamber of the bag filter.

[0010] Furthermore, a supporting shell is provided above the rotating drum of the cement mill body, and a water receiving tank for collecting cooling water is provided below it.

[0011] Furthermore, the supporting shell has an arched structure, and the coiled spray pipe is installed inside the supporting shell by multiple tie rods and sleeved on the outer periphery of the rotating drum of the cement mill body; wherein the coiled spray pipe and the rotating drum of the cement mill body are provided with a gap for spraying.

[0012] Furthermore, in the axial direction of the cement mill body, the length of the supporting shell is greater than the length of the coiled spray pipe to avoid cooling water leakage.

[0013] Furthermore, the inlet end of the coiled spray pipe is connected to the water pump via a water supply pipe, and the outlet end of the coiled spray pipe flows back to the water tank via a return pipe.

[0014] Furthermore, a flow meter and an electrically controlled valve are installed on the water supply pipe.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This invention employs a combination of internal and external cooling within the rotary drum to achieve simultaneous cooling inside and outside the cement mill, effectively improving the cooling effect. Additionally, a baghouse dust collector is used to collect the dust discharged during air cooling, intercepting materials while reducing dust pollution. A water collection tank is included for collecting heated water, which can be used for heating or drying. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the main structure of the cooling device for the cement mill of this utility model;

[0019] Figure 2 This is a schematic diagram of the coiled spray pipe on the cooling device of the cement mill of this utility model;

[0020] Figure 3 This is a schematic diagram of the end face of the coiled spray pipe on the cooling device of the cement mill of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Cement mill body; 2. Blower; 21. Air supply pipe; 3. Bag filter; 31. Negative pressure pipe; 32. Discharge valve; 4. Support shell; 5. Coiled spray pipe; 51. Tie rod; 52. Spray head; 6. Water tank; 61. Return pipe; 7. Water pump; 71. Water supply pipe; 8. Water receiving tank. Detailed Implementation

[0022] refer to Figure 1This embodiment discloses a cooling device for a cement mill, including an internal cooling mechanism for conveying cooling air into the cement mill body 1 and an external cooling mechanism for cooling the outer wall of the cement mill body 1 by spraying water.

[0023] Specifically, the cement mill body 1 described in this application is a ball mill.

[0024] The internal cooling mechanism of the rotary drum includes a blower 2 and an air supply pipe 21 that supply air to one end of the cement mill body 1; and a bag filter 3 is connected to the other end of the cement mill body 1 through a negative pressure pipe 31.

[0025] The external cooling mechanism of the rotating drum includes a coiled spray pipe 5 installed around the outer periphery of the rotating drum of the cement mill body 1, a water tank 6 supplying water to the coiled spray pipe 5, a water pump 7, and pipe fittings; multiple nozzles 52 are installed at uniform length intervals on the coiled spray pipe 5, and the nozzles 52 face the outer wall of the rotating drum of the cement mill body 1; wherein the multiple nozzles 52 are arranged in a ring, which can uniformly cool the outer wall of the cement mill.

[0026] In this embodiment, a discharge valve 32 is installed at the bottom of the dust collection chamber of the bag filter 3 to discharge the dust carried out from the cement mill.

[0027] In this embodiment, a supporting shell 4 is installed above the rotating drum of the cement mill body 1, and a water receiving tank 8 for collecting cooling water is installed below it. The supporting shell 4 has an arched structure, and the coiled spray pipe 5 is set inside the supporting shell 4 by multiple tie rods 51 and sleeved on the outer periphery of the rotating drum of the cement mill body 1.

[0028] In use, the coiled spray pipe 5 sprays water onto the outer wall of the rotating drum of the cement mill body 1 using the evenly installed nozzles 52 on it. This allows the water to absorb the heat generated by the cement mill body 1 during operation. At the same time, the arched design of the supporting shell 4 helps to guide the water splashed on its inner wall downwards, preventing the cooling water from dripping directly onto the ground. This allows the water, after absorbing heat, to fall into the water collection tank 8, thus preventing cooling water leakage. The hot water collected in the water collection tank 8 can be used for heating or other processes that require heating or drying.

[0029] In this embodiment, a gap is reserved between the coiled spray pipe 5 and the rotating cylinder of the cement mill body 1 for spraying, wherein the gap can be 5-15cm, so as to facilitate the installation of the nozzle 52 and use the nozzle 52 to spray and cool the cement mill body 1.

[0030] In the axial direction of the cement mill body 1, the length of the supporting shell 4 is greater than the length of the coiled spray pipe 5 to avoid cooling water leakage.

[0031] In this embodiment, the inlet end of the coiled spray pipe 5 is connected to the water pump 7 via a water supply pipe 71, and the outlet end of the coiled spray pipe 5 returns to the water tank 6 via a return pipe 61. A flow meter and an electrically controlled valve are installed on the water supply pipe 71 to control and monitor the flow rate of the cooling water.

[0032] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A cooling device for a cement mill, characterized in that: It includes an internal cooling mechanism for conveying cooling air into the cement mill body (1) and an external cooling mechanism for cooling the outer wall of the cement mill body (1) by spraying water. The internal cooling mechanism of the rotary drum includes a blower (2) and an air supply pipe (21) for supplying air to one end of the cement mill body (1); and a bag filter (3) is connected to the other end of the cement mill body (1) through a negative pressure pipe (31). The external cooling mechanism of the rotating drum includes a coiled spray pipe (5) surrounding the outer periphery of the rotating drum of the cement mill body (1), a water tank (6) supplying water to the coiled spray pipe (5), a water pump (7), and pipe fittings; a plurality of nozzles (52) are provided at uniform length intervals on the coiled spray pipe (5), and the nozzles (52) face the outer wall of the rotating drum of the cement mill body (1).

2. The cooling device for a cement mill according to claim 1, characterized in that: A discharge valve (32) is provided at the bottom of the dust collection bin of the bag filter (3).

3. The cooling device for a cement mill according to claim 1, characterized in that: A supporting shell (4) is provided above the rotating drum of the cement mill body (1), and a water receiving tank (8) for collecting cooling water is provided below it.

4. The cooling device for a cement mill according to claim 3, characterized in that: The supporting shell (4) has an arched structure. The coiled spray pipe (5) is set inside the supporting shell (4) by multiple tie rods (51) and sleeved on the outer periphery of the rotating drum of the cement mill body (1). The coiled spray pipe (5) and the rotating drum of the cement mill body (1) are reserved with a gap for spraying.

5. The cooling device for a cement mill according to claim 4, characterized in that: In the axial direction of the cement mill body (1), the length of the supporting shell (4) is greater than the length of the coiled spray pipe (5) to avoid cooling water leakage.

6. The cooling device for a cement mill according to claim 1, characterized in that: The inlet end of the coiled spray pipe (5) is connected to the water pump (7) through the water supply pipe (71), and the outlet end of the coiled spray pipe (5) flows back to the water tank (6) through the return pipe (61).

7. The cooling device for a cement mill according to claim 6, characterized in that: A flow meter and an electrically controlled valve are installed on the water supply pipe (71).

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