Sealing device for vertical cooler and feeder of lime rotary kiln

Abstract

The utility model relates to the technical field of device sealing, and discloses a sealing device used between a vertical cooler and a feeder of a lime rotary kiln, comprising a connecting flange, wherein the connecting flange comprises an upper connecting flange and a lower connecting flange, and further comprises an inner guide sleeve and a corrugated rubber sleeve, wherein the upper end of the inner guide sleeve is connected to the vertical cooler through the connecting flange, the corrugated rubber sleeve is arranged on the outer side of the inner guide sleeve, and a gap is left between the corrugated rubber sleeve and the inner guide sleeve, and a cold air duct is installed on the connecting flange. By using a corrugated rubber sleeve for protection on the outside, and using an inner guide sleeve on the inside to isolate the material from the corrugated rubber sleeve, and opening a cooling port at the upper end of the flange to cool the corrugated rubber sleeve by sucking in cold air through negative pressure, the above structure realizes complete sealing of the structure between the vertical cooler and the feeder, solves the problems of dust and excessive falling materials on site, and reduces the risk of fire on site, greatly improves the on-site working environment, and reduces maintenance and operation costs.

Description

Technical Field

[0001] The utility model relates to the technical field of device sealing, in particular to a sealing device used between a vertical cooler and a feeder of a lime rotary kiln. Background Art

[0002] In the prior art, the connection between the vertical cooler and the feeder of the lime rotary kiln is usually an embedded connection, and the vertical cooler and the feeder are sealed with a connecting cloth to prevent the lime dust from overflowing and forming dust. In actual engineering applications, due to the influence of many factors such as the particle size of the material during lime burning, the amount of ash and the cooling capacity of the vertical cooler, the lime is cooled unevenly, and red material is often produced, resulting in frequent burning, dust and leakage of the feeder connecting cloth, and there is also a risk of fire. The use of metal soft connections is affected by the vibration frequency of the feeder and produces metal fatigue, resulting in frequent cracking of the corrugated position, and eventually losing the sealing function. In addition, its use cost is also high, and it is necessary to stop the machine for maintenance and replacement during operation, which increases the operating cost.

[0003] At present, the connection between the vertical cooler and the feeder of the lime rotary kiln is usually an embedded connection, and the vertical cooler and the outside of the feeder are usually sealed with a connecting cloth. Although the connecting cloth has a low cost, it has poor durability and is frequently damaged, resulting in serious dust and a harsh environment on site. Utility Model Content

[0004] In order to mainly solve the problem that the existing connection method between the vertical cooler and the feeder of the lime rotary kiln in the prior art is prone to dust generation, material leakage and safety risks, the utility model proposes a sealing device for the vertical cooler and the feeder of the lime rotary kiln.

[0005] A sealing device for a vertical cooler and a feeder of a lime rotary kiln comprises a connecting flange, wherein the connecting flange comprises an upper connecting flange and a lower connecting flange, and further comprises an inner guide sleeve and a corrugated rubber sleeve. The upper end of the inner guide sleeve is connected to the vertical cooler via the upper connecting flange, the lower end of the inner guide sleeve corresponds to the upper interface position of the feeder and a buffer distance is left, the corrugated rubber sleeve is connected between the upper connecting flange and the lower connecting flange and is sleeved on the outer side of the inner guide sleeve, and a gap is left between the corrugated rubber sleeve and the inner guide sleeve, and a cold air duct is provided to lead to the gap between the inner guide sleeve and the corrugated rubber sleeve.

[0006] The sealing device for the vertical cooler and feeder of the lime rotary kiln is provided with a mounting annular surface at the upper end of the inner guide sleeve, and is detachably fixed to the upper connecting flange through the upper end of the corrugated rubber sleeve, and the lower end of the corrugated rubber sleeve is detachably fixed to the lower connecting flange.

[0007] The sealing device for the vertical cooler and feeder of the lime rotary kiln has an upper connecting flange welded to the bottom of the discharge port of the vertical cooler, and a lower connecting flange welded to the upper part of the feeder.

[0008] The sealing device for the vertical cooler and feeder of the lime rotary kiln has a cold air duct installed on the upper connecting flange, a through hole is provided on the inner guide sleeve, and the cold air duct communicates with the gap between the inner guide sleeve and the corrugated rubber sleeve through the through hole.

[0009] In the sealing device for the vertical cooler and feeder of the lime rotary kiln, at least one layer of mesh cloth is laminated on the inner side of the corrugated rubber sleeve.

[0010] The beneficial effects of the utility model include: the utility model adopts a corrugated rubber sleeve for protection on the outside, and adopts an inner guide sleeve on the inside to isolate the material from the corrugated rubber sleeve, and a cooling port is opened at the upper end of the flange to cool the corrugated rubber sleeve by sucking in cold air through the negative pressure inside the feeder. The above structure realizes complete sealing of the structure between the vertical cooler and the feeder, solves the problems of excessive dust and falling materials on site, reduces the risk of fire on site, greatly improves the on-site working environment, and the service life of the sealing device can reach more than two years, reducing maintenance and operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a structural schematic diagram of a sealing device for a vertical cooler and a feeder of a lime rotary kiln.

[0012] Figure 2 The utility model is a schematic diagram of the structure of the inner guide sleeve of the sealing device for the vertical cooler and the feeder of the lime rotary kiln.

[0013] Figure 3 The utility model is a schematic diagram of the cold air duct structure of the sealing device for the vertical cooler and feeder of the lime rotary kiln.

[0014] Figure 4 The utility model is a schematic diagram of the flange structure of the sealing device connecting the vertical cooler and the feeder of the lime rotary kiln.

[0015] Markings in the figure are: 1-connecting flange, 2-inner guide sleeve, 3-corrugated rubber sleeve, 4-cold air duct, 5-through hole. DETAILED DESCRIPTION

[0016] The utility model is described below in conjunction with the accompanying drawings.

[0017] like Figure 1-3The utility model is shown as a sealing device for a vertical cooler and a feeder of a lime rotary kiln, comprising a connecting flange 1, the connecting flange 1 comprising an upper connecting flange 11 and a lower connecting flange 12, an inner guide sleeve 2, and a corrugated rubber sleeve 3. The upper end of the inner guide sleeve 2 is connected to the vertical cooler through the upper connecting flange 11, the lower end of the inner guide sleeve 2 corresponds to the upper interface of the feeder and a buffer distance is left, the corrugated rubber sleeve 3 is connected between the upper connecting flange 11 and the lower connecting flange 12 and is sleeved on the outer side of the inner guide sleeve 2, and the corrugated rubber sleeve 3 is connected between the upper connecting flange 11 and the lower connecting flange 12 and is sleeved on the outer side of the inner guide sleeve 2. A gap is left between the rubber sleeve 3 and the inner guide sleeve 2, and a cold air duct 4 is arranged to lead to the gap between the inner guide sleeve 2 and the corrugated rubber sleeve 3. External cold air is sucked into the gap between the corrugated rubber sleeve 3 and the inner guide sleeve 2 through the negative pressure inside the feeder to cool the corrugated rubber sleeve 3. In this embodiment, the main material of the inner guide sleeve 2 is carbon steel Q325, and the material can be selected according to the site conditions. The inner guide sleeve 2 is used to isolate lime to prevent high-temperature lime from directly contacting the corrugated rubber sleeve 3 and causing damage to it.

[0018] Furthermore, a mounting annular surface is provided at the upper end of the inner guide sleeve 2, and is detachably fixed to the upper connecting flange 11 through the upper end of the corrugated rubber sleeve 3, and the lower end of the corrugated rubber sleeve 3 is detachably fixed to the lower connecting flange 12, so that the various structures can be easily disassembled.

[0019] Furthermore, the upper connecting flange 11 is welded to the bottom of the discharge port of the vertical cooler, and the lower connecting flange 12 is welded to the upper part of the feeder, so that the connection between the structures is more secure; in this embodiment, the corrugated rubber sleeve 3 is made of high-temperature resistant phenyl silicone rubber material, and other materials can be selected according to the on-site working conditions.

[0020] Furthermore, the cold air duct 4 is installed on the upper connecting flange 11, and a through hole is provided on the inner guide sleeve 2. The cold air duct 4 is connected with the gap between the inner guide sleeve 2 and the corrugated rubber sleeve 3 through the through hole, so as to better cool the corrugated rubber sleeve 3 from top to bottom.

[0021] Furthermore, at least one layer of mesh cloth is laminated on the inner side of the corrugated rubber sleeve 3 . The strength and wear resistance of the corrugated rubber sleeve 3 are further improved by adding the mesh cloth, thereby achieving the purpose of extending the service life.

[0022] In this embodiment, when the utility model is installed, firstly, the materials inside the vertical cooler are emptied, the power supply of the feeder is cut off, and then the feeder is lifted by a hand winch, the original connection structure between the feeder and the vertical cooler is removed and separated, the upper connecting flange 11 is welded to the bottom of the discharge port of the vertical cooler, and the lower connecting flange 12 is welded to the upper part of the feeder, and an installation interface for installing the cold air duct 4 is reserved on the upper connecting flange 11, and then the inner guide sleeve 2 is installed. In this embodiment, the mounting annular surface on the inner guide sleeve 2 is clamped on the upper connecting flange 11. Existing technicians can adjust the installation method according to the adaptability of the on-site working conditions, and use a hand winch to lift the feeder into place, install the safety rope, and finally put the corrugated rubber sleeve 3 on the outside of the inner guide sleeve 2 and fix the corrugated rubber sleeve 3 to the connecting flange 1 with bolts, and the installation is completed.

[0023] When the device is running, the feeder is first powered on for a no-load test. After the no-load test is normal, the vertical cooler is filled with materials for a waiting test. The height of each suspension device is adjusted to match the position of the feeder and the vertical cooler. Then the device is officially put into operation. The material is sent out by the feeder and flows to the vertical cooler through the inner guide sleeve 2. In this process, the material is isolated from the corrugated rubber sleeve 3 by the inner guide sleeve 2, and a gap is left between the corrugated rubber sleeve 3 and the inner guide sleeve 2. The external cold air is sucked into the gap between the above-mentioned corrugated rubber sleeve 3 and the inner guide sleeve 2 through the cold air duct 4 installed on the connecting flange 1, so as to achieve the purpose of cooling the corrugated rubber sleeve 3. After the utility model is put into use in actual working conditions, the service life of the connection structure between the lime rotary kiln vertical cooler and the feeder is greatly extended.

[0024] Compared with the prior art, the sealing device for the vertical cooler and feeder of the lime rotary kiln proposed in the utility model has the following advantages: the sealing process of the material is sealed by adopting an inner guide sleeve 2 with a sealing structure, and the corrugated rubber sleeve 3 is used for protection on the outside, and a cold air duct 4 is used to inhale external cold air to cool the corrugated rubber sleeve 3, thereby solving the problem that the existing connection method between the vertical cooler and the feeder of the lime rotary kiln in the prior art is prone to dust generation, material leakage, and safety risks.

Claims

1. A sealing device for a lime rotary kiln vertical cooler and a feeder, comprising a connecting flange (1), wherein the connecting flange (1) comprises an upper connecting flange (11) and a lower connecting flange (12), characterized in that: It also comprises an inner flow guide sleeve (2) and a corrugated rubber sleeve (3); the upper end of the inner flow guide sleeve (2) is connected to the vertical cooler via the upper connecting flange (11); the lower end of the inner flow guide sleeve (2) corresponds to the upper interface position of the feeder and a buffer distance is left; the corrugated rubber sleeve (3) is connected between the upper connecting flange (11) and the lower connecting flange (12) and is sleeved on the outside of the inner flow guide sleeve (2); a gap is left between the corrugated rubber sleeve (3) and the inner flow guide sleeve (2); a cold air duct (4) is provided to lead to the gap between the inner flow guide sleeve (2) and the corrugated rubber sleeve (3).

2. The sealing device for the vertical cooler and feeder of the lime rotary kiln according to claim 1 is characterized in that: The upper end of the inner guide sleeve (2) is provided with a mounting annular surface and is detachably fixed to the upper connecting flange (11) through the upper end of the corrugated rubber sleeve (3), and the lower end of the corrugated rubber sleeve (3) is detachably fixed to the lower connecting flange (12).

3. The sealing device for the vertical cooler and feeder of the lime rotary kiln according to claim 1 is characterized in that: The upper connecting flange (11) is welded to the bottom of the feed opening of the vertical cooler, and the lower connecting flange (12) is welded to the upper part of the feeder.

4. The sealing device for the vertical cooler and feeder of the lime rotary kiln according to claim 1 is characterized in that: The cold air pipe (4) is installed on the upper connecting flange (11), and a through hole (5) is provided on the inner flow guide sleeve (2). The cold air pipe (4) communicates with the gap between the inner flow guide sleeve (2) and the corrugated rubber sleeve (3) through the through hole (5).

5. The sealing device for the vertical cooler and feeder of the lime rotary kiln according to claim 1, characterized in that: At least one layer of mesh cloth is fitted on the inner side of the corrugated rubber sleeve (3).

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