Pneumatic sealing compensation device in copper smelting industry

Abstract

A pneumatic sealing compensation device in the copper smelting industry belongs to the technical field of copper smelting. The device comprises a hydraulic gate valve and a reducer union connected to the output end of the hydraulic gate valve, the lower end of the reducer union is detachably connected with an ash falling pipe, a plurality of connecting plates are arranged on the upper portion of the outer wall of the ash falling pipe in the circumferential direction, each connecting plate is connected with a telescopic driving cylinder, and an annular fixing plate is fixedly arranged on the lower portion of the outer wall of the ash falling pipe. A hollow movable sleeve is arranged outside the ash falling pipe in a sleeving mode, gaps are formed between the middle of an upper cover and the middle of the lower bottom of the movable sleeve and the ash falling pipe, a plurality of protruding lugs corresponding to the telescopic driving cylinders are arranged on the outer wall of the movable sleeve, and the protruding lugs are detachably connected with telescopic rods of the telescopic driving cylinders in a one-to-one correspondence mode. An upper rubber tire bag and a lower rubber tire bag are vertically distributed in the movable sleeve, the fixing plate extends into the movable sleeve from the lower portion of the lower rubber tire bag, and a gap is formed between the end of the fixing plate and the inner wall of the movable sleeve. According to the utility model, the sealing performance can be obviously improved.

Description

Technical Field

[0001] This utility model belongs to the field of copper smelting technology, and specifically relates to a pneumatic sealing compensation device for the copper smelting industry. Background Technology

[0002] In copper smelting, the flue gas conveying system requires regular collection of dust. Currently, there are problems with smoke and ash leakage during the ash discharge process from the ash discharge port to the dust bin, leading to environmental pollution. Traditional sealing measures are ineffective: the sealing expansion joint is prone to failure under high temperature, corrosion, and vibration environments, resulting in smoke and ash leakage; frequent replacement of the expansion joint sometimes even causes production stoppages for maintenance, affecting production efficiency and incurring high maintenance costs; leaked dust pollutes the working environment, endangers worker health, and has a significant environmental impact. Utility Model Content

[0003] This invention addresses the aforementioned problems and overcomes the shortcomings of existing technologies by providing a pneumatic sealing compensation device for the copper smelting industry. This invention can significantly improve sealing performance, reduce costs and maintenance difficulty, and extend service life.

[0004] To achieve the above objectives, the present invention adopts the following technical solution.

[0005] This utility model provides a pneumatic sealing compensation device for the copper smelting industry, including a hydraulic gate valve and a reducing joint connected to the output end of the hydraulic gate valve. The reducing joint is characterized by a detachably connected ash-collecting pipe at its lower end. Multiple connecting plates are circumferentially arranged on the upper part of the outer wall of the ash-collecting pipe, each connecting plate being connected to a telescopic drive cylinder. A ring-shaped fixing plate is fixedly installed on the lower part of the outer wall of the ash-collecting pipe. A hollow movable sleeve is fitted outside the ash-collecting pipe, with a gap between the upper cover and the middle of the lower bottom of the movable sleeve and the ash-collecting pipe. The movable sleeve can move axially along the ash-collecting pipe. Multiple lugs corresponding to the telescopic drive cylinders are provided on the outer wall of the movable sleeve, and the lugs are detachably connected to the telescopic rods of the telescopic drive cylinders. An upper rubber bladder and a lower rubber bladder are arranged vertically inside the movable sleeve, both of which are movably fitted onto the ash-collecting pipe. The fixing plate extends from below the lower rubber bladder into the movable sleeve, with its end having a gap with the inner wall of the movable sleeve.

[0006] Furthermore, an annular intermediate partition is provided between the upper rubber bladder and the lower rubber bladder, and the inner end of the annular intermediate partition is fitted onto the ash discharge pipe with a gap.

[0007] The outer end of the annular intermediate partition is provided with a longitudinal plate that frictionally engages with the inner wall of the movable sleeve.

[0008] Rock wool filler is used to fill the interior of the upper rubber tire bladder, the interior of the lower rubber tire bladder, and the space between the fixed plate and the bottom of the movable sleeve.

[0009] The upper cover of the movable sleeve is detachably connected to the main body of the movable sleeve.

[0010] An axially arranged jacketed cavity is provided in the ash discharge pipe, and multiple heat exchange holes are arranged circumferentially on the outer wall of the ash discharge pipe within the jacketed cavity. A heat exchange pipe is connected to each of the heat exchange holes in the jacketed cavity, and a pipe thread for connecting to an external cooling pipe is provided at at least one heat exchange hole. The heat exchange pipe is made of aluminum or copper.

[0011] The telescopic drive cylinder is a telescopic cylinder.

[0012] The ash discharge pipe is divided into two detachable sections near the location where the connecting plate is set by a connecting flange.

[0013] The beneficial effects of this utility model.

[0014] This invention utilizes a rubber bladder, leveraging its excellent elasticity and compressibility to significantly improve the sealing compensation effect. The deformation capacity of the rubber sealing filler can adapt to thermal expansion and contraction under different working conditions, maintaining a stable seal. The rubber bladder is a reusable resource, resulting in low procurement costs. The sealing structure is simple, replacement is quick, and maintenance time and labor costs are reduced. The temperature regulation system, composed of the inner cavity of the ash discharge pipe and the heat dissipation pipe, is cooled by an external cooling source, effectively reducing the temperature of the sealing area. Furthermore, the heat dissipation pipe forms a physical insulation layer, protecting the expansion gasket and rubber sealing filler from high-temperature damage and extending their service life. Attached Figure Description

[0015] To make the technical problems solved, the technical solutions, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] Figure 1 This is a cross-sectional structural diagram of the present invention in its initial state.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention in its working state.

[0018] Figure 3 This is a cross-sectional structural diagram of the relevant components of the ash discharge pipe of this utility model.

[0019] Figure 4 This is a cross-sectional structural diagram of the relevant components at the movable sleeve of this utility model.

[0020] The markings in the diagram are as follows: 1 is a hydraulic gate valve, 2 is a reducing joint, 3 is an ash discharge pipe, 4 is a connecting plate, 5 is a telescopic drive cylinder, 6 is a fixed plate, 7 is a movable sleeve, 8 is an upper cover, 9 is a lower bottom, 10 is a lug, 11 is an upper rubber bladder, 12 is a lower rubber bladder, 13 is an annular intermediate partition plate, 14 is a longitudinal plate, 15 is rock wool packing, 16 is the inner cavity of the interlayer, 17 is a heat exchange tube, 18 is a connecting flange, and 19 is an ash canister. Detailed Implementation

[0021] As shown in the accompanying drawings, this embodiment provides a pneumatic sealing compensation device for the copper smelting industry, including a hydraulic gate valve 1 and a reducing connector 2 connected to the output end of the hydraulic gate valve 1. The lower end of the reducing connector 2 is detachably connected to an ash discharge pipe 3.

[0022] Multiple connecting plates 4 are arranged circumferentially on the upper part of the outer wall of the ash discharge pipe 3. Each connecting plate 4 is connected to a telescopic drive cylinder 5. The telescopic drive cylinder 5 can be a telescopic air cylinder, a telescopic hydraulic cylinder, or a telescopic electric cylinder.

[0023] To facilitate disassembly during maintenance and replacement, the ash discharge pipe 3 is divided into two detachable sections near the location of the connecting plate 4 by a connecting flange 18. During maintenance, only the lower section needs to be removed.

[0024] An annular fixing plate 6 is fixedly installed on the lower part of the outer wall of the ash discharge pipe 3. A hollow movable sleeve 7 is sleeved on the outside of the ash discharge pipe 3. There is a gap between the upper cover 8 and the lower bottom 9 of the movable sleeve 7 and the ash discharge pipe 3. The movable sleeve 7 can move along the axial direction of the ash discharge pipe 3.

[0025] To facilitate disassembly during maintenance and replacement, the upper cover 8 of the movable sleeve 7 is detachably connected to the main body of the movable sleeve 7. During maintenance, the upper cover 8 can be removed, and then the internal components can be removed one by one.

[0026] The outer wall of the movable sleeve 7 is provided with a plurality of lugs 10 corresponding to the telescopic drive cylinder 5, and the lugs 10 are detachably connected to the telescopic rod of the telescopic drive cylinder 5 one by one. The movable sleeve 7 is driven to move up and down relative to the ash discharge pipe 3 by the simultaneous raising and lowering of the telescopic rod of the telescopic drive cylinder 5.

[0027] The movable sleeve 7 has an upper rubber bladder 11 and a lower rubber bladder 12 arranged vertically inside. Both the upper rubber bladder 11 and the lower rubber bladder 12 can be movably fitted onto the ash discharge pipe 3. The fixing plate 6 extends into the movable sleeve 7 from below the lower rubber bladder 12, with its end having a gap with the inner wall of the movable sleeve 7. Since the movable sleeve 7 can move relative to the ash discharge pipe 3, while the fixing plate 6 is fixed to the ash discharge pipe 3, when the movable sleeve 7 moves, the fixing plate 6 can push the lower rubber bladder 12 and the upper rubber bladder 11 to deform for sealing compensation. Due to the recoverability of rubber, when the fixing plate 6 is not acting on the lower rubber bladder 12, the upper rubber bladder 11 and the lower rubber bladder 12 can automatically return to their original shape.

[0028] When the upper rubber tire bladder 11 and the lower rubber tire bladder 12 are compressed and deformed, in order to avoid deformation between the upper and lower rubber tire bladder 11 and the ash discharge pipe 3 due to vertical deformation, which would create a gap and cause air and smoke leakage, an annular intermediate partition 13 is provided between the upper rubber tire bladder 11 and the lower rubber tire bladder 12. The inner end of the annular intermediate partition 13 is fitted onto the ash discharge pipe 3 with a gap. In this way, when the lower rubber tire bladder 12 interacts with the annular intermediate partition 13, the annular intermediate partition 13 interacts with the upper rubber tire bladder 11, and the upper rubber tire bladder 11 interacts with the upper cover 8, the compression of the upper rubber tire bladder 11 and the lower rubber tire bladder 12 can only cause lateral deformation, thus avoiding air and smoke leakage.

[0029] In order to reduce the occurrence of jamming when the annular intermediate partition 13 moves, a longitudinal plate 14 is provided at the outer end of the annular intermediate partition 13 to frictionally engage with the inner wall of the movable sleeve 7, so that the movement can be smoother.

[0030] Because there are gaps between the relatively movable parts, in the copper smelting environment, dust may enter the interior of the movable cylinder through the gaps. Therefore, rock wool filler 15 is filled in the interior of the upper rubber bladder 11, the interior of the lower rubber bladder 12, and the space between the fixed plate 6 and the bottom 9 of the movable sleeve 7. The high temperature resistance, good elasticity, and light weight of this material are used to fill these variable spaces and occupy the space. When the ash discharge pipe 3 is running under slight positive pressure, it increases the resistance of dust entering the cavity through the expansion joints, thus preventing or reducing the entry of dust into the cavity.

[0031] Considering that this device will be used in high-temperature applications, to prevent the upper rubber bladder 11 and lower rubber bladder 12 from deforming at high temperatures and affecting the seal, a sandwiched inner cavity 16 is provided circumferentially in the ash discharge pipe 3. Multiple heat exchange holes are circumferentially arranged on the outer wall of the ash discharge pipe 3 within the sandwiched inner cavity 16. A heat exchange pipe 17 is connected to each heat exchange hole within the sandwiched inner cavity 16, and at least one heat exchange hole has a threaded connection for connecting to an external cooling pipe. When the temperature is high, an external cooling pipe can be connected through the pre-drilled thread, and the sandwiched inner cavity 16 can be cooled through the threaded heat exchange pipe 17 as an inlet pipe. The cooling medium can be compressed cold air or cooling water. When using compressed cold air, aluminum tubes are better for the heat exchange pipe 17; when using cooling water, stainless steel or copper tubes are better. After heat exchange, the high-temperature gas or water will be discharged through other heat exchange pipes 17 that serve as outlet pipes.

[0032] When the telescopic rod of the telescopic drive cylinder 5 extends, it simultaneously pushes out the movable sleeve 7. The lower bottom 9 of the movable sleeve 7 contacts the sealing ring at the top of the container such as the ashtray 19 to form a seal. Meanwhile, the upper rubber bladder 11 and the lower rubber bladder 12 inside the cavity of the movable sleeve 7 are deformed by external force, thus completing the compensation. When the telescopic rod of the telescopic drive cylinder 5 retracts, the upper rubber bladder 11 and the lower rubber bladder 12 also return to their original shape.

[0033] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

Claims

1. A pneumatic seal compensation device for copper smelting industry comprising a hydraulic gate valve (1) and a reducing joint (2) connected to the output end of the hydraulic gate valve (1), characterized in that, The variable diameter joint (2) is detachably connected with the ash falling pipe (3) at the lower end, a plurality of connecting plates (4) are arranged on the outer wall of the ash falling pipe (3) in the circumferential direction, each of the connecting plates (4) is connected with an extension drive cylinder (5), an annular fixed plate (6) is fixedly arranged on the lower part of the outer wall of the ash falling pipe (3), a hollow movable sleeve (7) is arranged on the outer part of the ash falling pipe (3), the upper cover (8) and the lower bottom (9) of the movable sleeve (7) have gaps with the ash falling pipe (3), the movable sleeve (7) can move axially along the ash falling pipe (3), a plurality of lugs (10) corresponding to the extension drive cylinder (5) are arranged on the outer wall of the movable sleeve (7) and are detachably connected with the extension rods of the extension drive cylinders (5) one by one, the upper rubber tire bag (11) and the lower rubber tire bag (12) are arranged in the inside of the movable sleeve (7) in the up-down direction, the upper rubber tire bag (11) and the lower rubber tire bag (12) are movably sleeved on the ash falling pipe (3), the fixed plate (6) extends into the movable sleeve (7) from below the lower rubber tire bag (12) and has a gap with the inner wall of the movable sleeve (7).

2. A pneumatic seal compensation device for the copper smelting industry according to claim 1, characterized in that, An annular intermediate partition plate (13) is arranged between the upper rubber tire bag (11) and the lower rubber tire bag (12), the inner end of the annular intermediate partition plate (13) is sleeved on the ash falling pipe (3) and has a gap.

3. A pneumatic seal compensation device for the copper smelting industry according to claim 2, characterized in that, The outer end of the annular intermediate partition plate (13) is provided with a longitudinal plate (14) which is in frictional fit with the inner wall of the movable sleeve (7).

4. A pneumatic seal compensation device for the copper smelting industry as claimed in claim 1, characterized in that, Rock wool fillers (15) are filled in the spaces between the inside of the upper rubber tire bag (11), the inside of the lower rubber tire bag (12), the fixed plate (6) and the lower bottom (9) of the movable sleeve (7).

5. A pneumatic seal compensation device for the copper smelting industry as claimed in claim 1, characterized in that, The upper cover (8) of the movable sleeve (7) is detachably connected with the main body of the movable sleeve (7).

6. A pneumatic seal compensation device for the copper smelting industry as claimed in claim 1, characterized in that, The ash falling pipe (3) is provided with a sandwiched inner cavity (16) in the circumferential direction, a plurality of heat exchange holes are arranged on the outer wall of the ash falling pipe (3) in the circumferential direction at the sandwiched inner cavity (16), a heat exchange pipe (17) is connected at each of the heat exchange holes in the sandwiched inner cavity (16), and a thread is arranged at at least one heat exchange hole for connecting with an external cooling pipe.

7. A pneumatic seal compensation device for the copper smelting industry according to claim 6, characterized in that, The heat exchange pipe (17) is an aluminum pipe, a stainless steel pipe or a copper pipe.

8. A pneumatic seal compensation device for the copper smelting industry as claimed in claim 1, characterized in that, The extension drive cylinder (5) is an extension air cylinder, an extension hydraulic cylinder or an extension electric cylinder.

9. A pneumatic seal compensation device for the copper smelting industry as claimed in claim 1, characterized in that, The ash falling pipe (3) is divided into two detachable sections by a connecting flange (18) near the lower part of the position where the connecting plate (4) is arranged.

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