Water cooling structure for preventing grate cooler rotor spindle from deforming

Abstract

The utility model discloses a water cooling structure for preventing a grate cooler rotor main shaft from deforming, which comprises a grate cooler main shaft, the grate cooler main shaft is arranged on a bearing seat through a bearing, a rotary joint is arranged at the end part of the grate cooler main shaft, and a cooling water pipeline is arranged in the center of the grate cooler main shaft. The rotary joint is provided with a water inlet end, a water outlet end and a rotary joint water inlet pipe, the water inlet end of the rotary joint is communicated with the rotary joint water inlet pipe, the rotary joint water inlet pipe extends into the cooling water pipeline, a water return ring is formed between the rotary joint water inlet pipe and the cooling water pipeline, and the water return ring is communicated with the water outlet end of the rotary joint. According to the utility model, the bearing part of the grate cooler rotor spindle and the two end parts of the spindle are cooled by high-pressure circulating cooling water, and heat generated by high-speed rotation of the bearing and heat generated by radiation of the spindle from the interior of a crushing cavity are taken away by the recycled cooling water, so that the grate cooler rotor spindle is prevented from being deformed due to severe heating; and a serious quality accident of main shaft scrapping is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cement clinker grate cooler crusher technical field, concretely relates to a kind of water-cooling cooling structure for preventing grate cooler rotor main shaft deformation. BACKGROUND

[0002] In the cement clinker production process, the performance and operation reliability of grate cooler are directly related to the operation rate of kiln system, clinker quality and system energy consumption, and it is one of the most important and key equipment in cement clinker firing system.

[0003] Grate cooler is a key equipment in cement production line, which not only can make material cool quickly, but also can recycle waste heat for reuse from cooling process, and plays a role in screening and conveying material. Grate cooler crusher is the "throat" of grate cooler, and its normal operation is directly related to the normal operation of the whole production line. The bearing heating of grate cooler crusher rotor shaft reduces the service life of bearing, and the main shaft deformation caused by heating is a big problem.

[0004] Grate cooler crusher rotor bearing seat has two: one end is fixed end, and the position of grate cooler crusher rotor shaft and bearing seat is fixed relatively, and the other end is movable end, and the position of grate cooler crusher rotor shaft and bearing seat can be moved relatively to compensate the expansion amount of grate cooler crusher rotor shaft at different temperatures. The bearing on the rotor shaft of grate cooler crusher generates heat during operation, and the heat source mainly comes from two aspects: one is the working pressure caused by uneven dynamic balance of grate cooler crusher rotor during work, which causes bearing heating, and the other is that the material temperature (the material is 1400 DEG C at the inlet of grate cooler, and it is about 150 DEG C after cooling to the crushing cavity of crusher) is radiated to the inside of rotor shaft and then transmitted to the bearing.

[0005] At present, in order to prevent the heating of grate cooler crusher rotor bearing, shorten the service life of bearing and cause the deformation of main shaft, there are generally three main measures to cool the bearing. One is to install a fan blade rotating with the main shaft on the inner side of the bearing seat of the rotor shaft, so that the flowing air formed by the rotation of the fan blade blocks the heat on the main shaft from being transmitted to the bearing part; one is to use water-cooled bearing seat, so that circulating cooling water can take away part of the heat of the bearing part, but the effect is not ideal, because when the heat of the main shaft is high, the main shaft cannot be cooled; another is to erect a fan outside the rotor bearing seat of grate cooler, to cool the bearing seat, and the bearing and the main shaft are cooled at the same time. The cooling effect of this cooling method is also not high. SUMMARY

[0006] Since the above cooling methods are not ideal, the utility model discloses a water cooling structure for preventing deformation of a rotor main shaft of a grate cooler, which cools the bearing part and the two end parts of the rotor main shaft of the grate cooler through high-pressure circulating cooling water, prevents the rotor main shaft of the grate cooler from being seriously heated and deformed, and thus causes the rotor main shaft to be scrapped.

[0007] The utility model discloses a water cooling structure for preventing deformation of a rotor main shaft of a grate cooler, which cools the bearing part and the two end parts of the rotor main shaft of the grate cooler through high-pressure circulating cooling water, prevents the rotor main shaft of the grate cooler from being seriously heated and deformed, and thus causes the rotor main shaft to be scrapped.

[0008] The utility model discloses a water cooling structure for preventing deformation of a rotor main shaft of a grate cooler, which cools the bearing part and the two end parts of the rotor main shaft of the grate cooler through high-pressure circulating cooling water, prevents the rotor main shaft of the grate cooler from being seriously heated and deformed, and thus causes the rotor main shaft to be scrapped.

[0009] The utility model discloses a water cooling structure for preventing deformation of a rotor main shaft of a grate cooler, which cools the bearing part and the two end parts of the rotor main shaft of the grate cooler through high-pressure circulating cooling water, prevents the rotor main shaft of the grate cooler from being seriously heated and deformed, and thus causes the rotor main shaft to be scrapped.

[0010] The utility model discloses a water cooling structure for preventing deformation of a rotor main shaft of a grate cooler, which cools the bearing part and the two end parts of the rotor main shaft of the grate cooler through high-pressure circulating cooling water, prevents the rotor main shaft of the grate cooler from being seriously heated and deformed, and thus causes the rotor main shaft to be scrapped.

[0011] The utility model discloses a water cooling structure for preventing deformation of a rotor main shaft of a grate cooler, which cools the bearing part and the two end parts of the rotor main shaft of the grate cooler through high-pressure circulating cooling water, prevents the rotor main shaft of the grate cooler from being seriously heated and deformed, and thus causes the rotor main shaft to be scrapped.

[0012] Compared with the prior art, the utility model has the following technical effects:

[0013] The utility model discloses a water cooling structure for preventing deformation of a rotor main shaft of a grate cooler, which cools the bearing part and the two end parts of the rotor main shaft of the grate cooler through high-pressure circulating cooling water, prevents the rotor main shaft of the grate cooler from being seriously heated and deformed, and thus causes the rotor main shaft to be scrapped. ACCURATE DRAWINGS

[0014] Figure 1 It is the structure schematic drawing of the utility model.

[0015] Figure 2 It is the structure schematic drawing of the utility model rotary joint.

[0016] Figure 3 It is a structure schematic view of the grate cooler rotor main shaft of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment.

[0018] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0019] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0020] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0021] In the cement clinker production process, the performance and operation reliability of the grate cooler directly relate to the operation rate of the kiln system, the clinker quality and the system energy consumption, and is one of the most important and key devices in the cement clinker firing system.

[0022] The grate cooler is a key equipment on the cement production line, which not only can cool the material quickly, but also can recover and reuse the waste heat from the cooling process, and at the same time plays the role of screening and conveying the material. The grate cooler crusher is the "throat" of the grate cooler, and its normal operation is directly related to the normal operation of the whole production line, and the heating of the rotor bearing of the grate cooler crusher reduces the service life of the bearing, especially the heating deformation of the main shaft is a big problem.

[0023] The bearing seat of the grate cooler crusher rotor has two ends, one end is a fixed end, the position of the grate cooler crusher rotor main shaft and the bearing seat is fixed, the other end is a movable end, the position of the grate cooler crusher rotor main shaft and the bearing seat is movable, and is used for compensating the expansion amount of the grate cooler crusher rotor main shaft at different temperatures.

[0024] The utility model discloses to the above technical problem, the fixed end and movable end of grate cooler crusher rotor bearing seat are improved, and the specific structure combines the Figure 1 Specifically and in detail.

[0025] As Figure 1 , Figure 2 and Figure 3 A water cooling structure for preventing deformation of a grate cooler rotor main shaft, comprising a grate cooler main shaft 2, the grate cooler main shaft 2 is installed on the bearing seat 3 through the bearing 4, a rotary joint 1 is arranged at the end of the grate cooler main shaft, a cooling water pipeline 5 is arranged at the center of the grate cooler main shaft, a water inlet end 7, a water outlet end 8 and a rotary joint water inlet pipe 9 are arranged on the rotary joint, the water inlet end 7 of the rotary joint is communicated with the rotary joint water inlet pipe 9, the rotary joint water inlet pipe 9 extends into the cooling water pipeline 5, a backwater ring 10 is formed between the rotary joint water inlet pipe and the cooling water pipeline, the backwater ring is communicated with the water outlet end 8 of the rotary joint, the rotary joint is fixed, the rotary joint water inlet pipe, the water inlet end and the water outlet end are all fixed, and the grate cooler main shaft rotates.

[0026] The water cooling structure for preventing deformation of the grate cooler rotor main shaft, the cooling water pipeline extends into the corresponding grate cooler main shaft of the bearing, and the end of the cooling water pipe corresponds to the end of the bearing.

[0027] The water cooling structure for preventing deformation of the grate cooler rotor main shaft, the diameter of the cooling water pipeline is 50-60mm, and the outer diameter of the rotary joint water inlet pipe is 25-30mm.

[0028] The water cooling structure for preventing deformation of the grate cooler rotor main shaft, the rotary joint water inlet pipe extends into the corresponding grate cooler main shaft at the end of the bearing, and the end extends to 1 / 3-1 / 2 of the bearing.

[0029] The utility model discloses an improved grate cooler rotor main shaft, and designs a water cooling structure for preventing deformation of the grate cooler rotor main shaft.

[0030] 1. The general outer diameter of the rotary joint inlet pipe is 25-30 mm, so that a 12.5-15 mm water storage space as a backwater ring is formed between the outer edge of the rotary joint inlet pipe and the cooling water pipe, so that the high-pressure cooling water from the bottom of the rotary joint inlet pipe fills the deep hole of the cooling water pipe and flows out from the rotary joint outlet.

[0031] 2. A rotary joint that can realize rotation and static conversion is installed at the cooling water pipe at the center of the surface end of the main shaft of the grate cooler, high-pressure cooling water is passed into the deep hole of the cooling water pipe through the rotary joint inlet pipe, the cooling water carries away the heat inside the main shaft, and the heat inside the main shaft is carried away through the outlet of the rotary joint, so that the heat at the bearing installation position of the rotor main shaft of the grate cooler can be reduced, the bearing installation position of the main shaft is prevented from being deformed due to severe heating, and a serious quality accident of the main shaft is caused.

[0032] 3. In order to reduce water resource waste, a cooling water cooling pool is generally built beside the crusher of the grate cooler, so that the cooling water can be recycled. At the same time, the mineral content in the recycled cooling water is low, the scale formed in the circulating water pipe is reduced, and the cooling effect is reduced.

[0033] 4. The utility model patent realizes the conversion from rotation to static through the rotary joint, the bearing part and the two end parts of the rotor main shaft of the grate cooler are cooled through high-pressure circulating cooling water, the heat generated by high-speed rotation of the bearing and the heat radiated from the main shaft in the crushing cavity are carried away by the circulating cooling water, so that the bearing temperature does not exceed the specified use temperature range of the bearing, the bearing grease is used in the specified use temperature range, the service life of the bearing is greatly prolonged, and the most critical is that the rotor main shaft of the grate cooler is prevented from being deformed due to severe heating, and a serious quality accident of the main shaft is caused.

[0034] The above-mentioned is only the preferred embodiment of the utility model, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the utility model, some changes and improvements can be made, which should be regarded as the protection range of the utility model.

Claims

1. A water-cooled cooling structure for preventing deformation of the main shaft of a grate cooler rotor, comprising a grate cooler main shaft (2), the grate cooler main shaft (2) being mounted on a bearing seat (3) via a bearing (4), characterized in that: A rotary joint (1) is provided at the end of the main shaft of the grate cooler. A cooling water pipe (5) is provided at the center of the main shaft of the grate cooler. A water inlet (7), a water outlet (8) and a rotary joint water inlet pipe (9) are provided on the rotary joint. The water inlet (7) of the rotary joint is connected to the rotary joint water inlet pipe (9). The rotary joint water inlet pipe (9) extends into the cooling water pipe (5). A return water ring (10) is formed between the rotary joint water inlet pipe and the cooling water pipe. The return water ring is connected to the water outlet (8) of the rotary joint.

2. The water-cooled cooling structure for preventing deformation of the main shaft of a grate cooler rotor according to claim 1, characterized in that: The cooling water pipe extends into the main shaft of the grate cooler corresponding to the bearing, with the end of the cooling water pipe corresponding to the end of the bearing.

3. The water-cooled cooling structure for preventing deformation of the main shaft of a grate cooler rotor according to claim 1, characterized in that: The diameter of the cooling water pipe is 50-60mm, and the outer diameter of the water inlet pipe of the rotary joint is 25-30mm.

4. The water-cooled cooling structure for preventing deformation of the main shaft of a grate cooler rotor according to claim 3, characterized in that: The rotary joint water inlet pipe extends into the grate cooler main shaft corresponding to the bearing end, with its end extending to 1 / 3-1 / 2 of the bearing.

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