Adjustable material clamping and foreign body removing device

Abstract

The present invention discloses an adjustable device for clamping and removing foreign objects, comprising: a screw part, a gripping part, and a clamping part. The gripping part is rotatably connected to the screw part, and the gripping part can rotate with the axial direction of the screw part as the rotation center, and one side of the gripping part has an opening; the clamping part is rotatably connected to the gripping part, and is symmetrically arranged on both sides of the opening, and one end of the clamping part is also connected to a chain; the clamping part is rotatably connected to the gripping part in an eccentric manner, and the rotation center axis of the clamping part is perpendicular to the axial direction of the screw part, and the outer periphery of the clamping part is provided with an arc joint surface, which can rotate around the rotation axial axis of the clamping part, and can rotate to abut against the foreign object when there is a foreign object in the opening. Thus, the device can extend into the rotary sealing valve to grab the foreign object that is stuck in the material, overcome the difficulty of taking foreign objects in the narrow site, and the problem of the high temperature of the foreign object itself, create conditions for timely resumption of production, and effectively ensure production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of material clamping and foreign matter removal by a dry coke quenching rotary sealing valve, and in particular to an adjustable material clamping and foreign matter removal device. Background Art

[0002] The so-called dry quenching is relative to wet quenching. It refers to a method of quenching red coke by using inert gas to cool it down. The red coke from the coke oven is loaded into the dry quenching furnace through the rotary coke tank car via the elevator, and then the circulating fan is used to blow low-temperature circulating gas into the dry quenching furnace for countercurrent heat exchange with the red coke, and then enters the boiler, thereby generating high-pressure steam and dry quenching the cold coke. The cooled coke is discharged from the bottom of the dry quenching furnace through the rotary sealing valve for external delivery. Dry quenching is superior to wet quenching in terms of energy saving, environmental protection and improving coke quality.

[0003] The CDQ discharge device is a semi-enclosed space, located in the positive pressure section of the CDQ circulation system. Due to wear, thermal expansion and contraction, the expansion joints and rotary sealing valves of the discharge device are prone to circulating gas leakage. After leakage, the circulating gas containing nitrogen, dust, CO, and sulfur diffuses around the site, and gas replacement relies on natural ventilation and convection replacement. When the rotary sealing valve is stuck, it is usually necessary to stop the circulating fan and wait for the site to meet the construction conditions, that is, when the concentration of dust, CO, nitrogen, etc. on the site reaches the conditions for personnel to enter the site for construction, the staff will enter the site, open the rotary sealing valve, and use tools such as hooks or directly remove foreign objects in the sealing valve by hand. However, due to the high temperature on site, it is very easy to cause risks such as scalding, poisoning and suffocation.

[0004] Therefore, how to quickly deal with the stuck material and remove foreign objects in the rotary sealing valve and reduce the impact on production safety and personnel has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In order to solve part or all of the technical problems existing in the above-mentioned prior art, the present invention provides an adjustable material clamping and foreign body removing device.

[0006] The technical solution of the present invention is as follows:

[0007] An adjustable material clamping and foreign body removing device, the device comprising:

[0008] Screw part;

[0009] A gripping portion, the gripping portion being rotatably connected to an end of the screw portion via a bearing, the gripping portion being rotatable with the axial direction of the screw portion as a rotation center, the gripping portion having an opening on a side away from the screw portion, the opening being outward along the axial direction of the screw portion;

[0010] A clamping part, which is rotatably connected to the grasping part and symmetrically arranged on both sides of the opening, and one end of the clamping part is also connected to a chain, and the chain can pull the clamping part to rotate;

[0011] wherein the clamping portion is rotatably connected to the gripping portion in an eccentric manner, and a rotation center axis of the clamping portion is perpendicular to an axial direction of the screw portion,

[0012] The outer periphery of the clamping portion is provided with an arc joint surface, and the arc joint surface is directed toward the opening when the clamping portion is in a natural state. The arc joint surface can rotate with the clamping portion around the rotation axis of the clamping portion, and the arc joint surface can rotate to abut against the foreign matter when there is a foreign matter in the opening.

[0013] Optionally, the gripping portion comprises:

[0014] Base seat;

[0015] a rotating portion connected to the base seat and extending toward the screw portion, the rotating portion being rotatably connected to an end of the screw portion via a bearing;

[0016] A support portion, wherein the support portion is connected to the base seat and extends toward a side away from the screw portion. There are two support portions, the two support portions are arranged at an interval, the opening is formed between the two support portions, and the clamping portion is rotatably connected to the support portion.

[0017] Optionally, the clamping portion is configured as a crescent shape, the chain is connected to one end of the crescent shape, and the chain can pull the clamping portion toward one side of the screw to rotate so that the other end of the crescent shape can abut against foreign matter in the opening.

[0018] Optionally, the concave surface of the clamping portion faces a direction away from the opening when the clamping portion is in a natural state.

[0019] The main advantages of the technical solution of the present invention are as follows:

[0020] The adjustable foreign body grabbing device of the present invention can reach into the rotary sealing valve to grab the foreign body that is stuck in the material, overcoming the difficulty of taking foreign bodies in the narrow site and the high temperature of the foreign bodies themselves (the coke discharge temperature of the rotary sealing valve is about 150°C), creating conditions for timely resumption of production and effectively ensuring production efficiency. Compared with the prior art, the device has a simple structure, low manufacturing cost, can be reused and has a wide range of applications. It can easily and quickly grab foreign bodies in the rotary sealing valve, and has great promotion and application value in the field of dry coke quenching systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of a gas rapid replacement system for a dry quenching coke oven according to one embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of an adjustable material-removing foreign matter device according to one embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 10: Screw part 20: Grasping part 21: Base seat

[0026] 22: Rotating part 23: Support part 24: Opening

[0027] 30: Clamping part 40: Chain DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 and Figure 2 As shown, in one embodiment of the present invention, a gas rapid replacement system for a dry coke quenching discharge device and an adjustable material clamping and foreign matter removal device are provided.

[0031] In the prior art, when the circulating gas leaks from the expansion joint and rotary sealing valve of the discharge device of the dry quenching coke oven, gas replacement is usually carried out by natural ventilation and convection ventilation. However, this replacement method is inefficient and takes a long time. Once a device fails, the fault handling time will be greatly prolonged, affecting the safe operation of the equipment. At the same time, it is sometimes necessary to stop production for processing, which will seriously reduce production efficiency. In addition, the staff who handle the fault are very likely to suffer from poisoning, suffocation and occupational diseases, which will bring great safety hazards.

[0032] In this regard, the gas rapid replacement system in this embodiment can quickly replace the gas generated by the leakage of the dry coke quenching discharge device, which can effectively solve the impact of gas leakage in the discharge device on the environment and staff, shorten the time for staff to handle faults, reduce the risks brought by on-site operations, and at the same time enable the equipment to resume production in time to ensure production efficiency.

[0033] Specifically, in this embodiment, if Figure 1 As shown, the gas rapid replacement system includes: an exhaust pipe, an axial flow fan, and a dust collection hood.

[0034] The exhaust pipe can be arranged near the outer wall adjacent to the vibrating feeder of the dry coke discharging device, the exhaust pipe is arranged in the vertical direction, the dust collecting hood is arranged above the air outlet of the discharge pipe of the dry coke pre-storage chamber, and the exhaust port of the axial flow fan is connected to the side of the bottom of the exhaust pipe through a pipe arranged obliquely upward. A plug plate is also arranged at the bottom of the exhaust pipe to seal the bottom of the exhaust pipe.

[0035] In actual scenarios, a loading device is provided at the top of the dry quenching furnace, through which red coke can be placed in the dry quenching furnace, and a vibrating feeder is provided at the bottom of the dry quenching furnace, which is connected to a rotary sealing valve, and an axial flow fan is provided near the rotary sealing valve. Therefore, when a leak occurs near the vibrating feeder, the chimney effect formed by the height difference of the exhaust pipe can be used to allow the leaked gas to enter the exhaust pipe through the axial flow fan, and the leaked circulating gas can be sucked away by the self-priming force of the exhaust pipe and discharged to the dust collecting hood of the pre-storage chamber, and then adsorbed and filtered by the ground dust removal station before being discharged.

[0036] Preferably, an online alarm device is also provided near the rotary sealing valve, and the online alarm device is connected to the axial flow fan. The online alarm device can detect the concentration of the leaked gas. When the concentration of the leaked gas reaches the warning value, the online alarm device can send an alarm signal and control the axial flow fan to start working, so that the leaked gas is transported to the exhaust pipe as soon as possible, and discharged to the dust collecting hood of the pre-storage chamber through the exhaust pipe, and then adsorbed and filtered by the ground dust removal station and discharged externally, thereby reducing safety hazards.

[0037] The leaked gas discharged through the exhaust pipe may contain a large amount of impurities such as dust and coke. The lighter part of these impurities moves upward with the airflow until they are adsorbed into the dust hood, adsorbed and filtered by the ground dust removal station, and then discharged to the outside, thereby reducing air pollution; the heavier part of the impurities falls down and accumulates at the bottom of the exhaust pipe. When the exhaust pipe needs to be cleaned, the plug can be unplugged to facilitate the discharge of these heavier impurities.

[0038] It is understandable that, under normal use, the plug plate is always installed at the bottom of the exhaust pipe to ensure sealing, and when impurities need to be removed or parts need to be replaced, it can be removed as needed.

[0039] It can be seen that the gas rapid replacement system in this embodiment overcomes the disadvantages of previous axial flow fan ventilation replacement, which is limited to a local area, circulates back and forth, and the leaked gas cannot be discharged from the discharge device in time. At the same time, due to the on-site gas convection circulation, it plays a role in reducing the on-site temperature of the discharge device, thereby gaining time for fault handling, inspection and maintenance operations.

[0040] Moreover, when the rotary sealing valve is stuck, the gas rapid replacement system creates construction conditions for removing the stuck material from the rotary sealing valve.

[0041] Furthermore, when the foreign matter in the rotary sealing valve cannot be removed manually on site, the adjustable material grabbing and foreign matter removal device provided in this embodiment can be inserted into the rotary sealing valve to grab the foreign matter after opening the upper cover plate of the rotary sealing valve.

[0042] Specifically, Figure 2 As shown, the adjustable material clamping and foreign body removing device in this embodiment includes: a screw portion 10 , a grabbing portion 20 and a clamping portion 30 .

[0043] The screw part 10 is generally configured as a long bar. The gripping part 20 is rotatably connected to the end of the screw part 10 via a bearing. The gripping part 20 can rotate with the axial direction of the screw part 10 as the rotation center. The gripping part 20 has an opening 24 on the side away from the screw part 10, and the opening 24 faces outward along the axial direction of the screw part 10. The clamping part 30 is rotatably connected to the gripping part 20 and is symmetrically arranged on both sides of the opening 24. A chain 40 is also connected to one end of the clamping part 30, and the chain 40 can pull the clamping part 30 to rotate.

[0044] At the same time, the clamping portion 30 is rotatably connected to the grasping portion 20 in an eccentric manner, and the rotation center axis of the clamping portion 30 is perpendicular to the axial direction of the screw portion 10. The outer periphery of the clamping portion 30 is provided with an arc joint surface, which is facing the opening 24 when the clamping portion 30 is in a natural state. The arc joint surface can rotate with the clamping portion 30 around the rotation axis of the clamping portion 30, and the arc joint surface can rotate to abut against the foreign matter when there is foreign matter in the opening 24.

[0045] It can be understood that, in a natural state, the adjustable material-removing foreign body device is placed in a vertical direction, the grabbing portion 20 and the clamping portion 30 are located at the bottom of the screw portion 10, and because the clamping portion 30 is arranged in an eccentric manner, the clamping portion 30 will rotate under the action of its own gravity to make the arc joint surface face the opening 24. When there is a foreign body in the opening 24, the greater the pulling force of the chain 40, the greater the clamping force of the clamping portion 30 on the foreign body.

[0046] Furthermore, the grabbing portion 20 includes: a base 21 , a rotating portion 22 , and a supporting portion 23 .

[0047] The rotating portion 22 is connected to the base 21 and extends toward the screw portion 10. The rotating portion 22 is rotatably connected to the end of the screw portion 10 via a bearing, thereby conveniently adjusting the position of the opening 24. The supporting portion 23 is connected to the base 21 and extends toward a side away from the screw portion 10. There are two supporting portions 23, which are arranged at intervals, and an opening 24 is formed between the two supporting portions 23. The clamping portion 30 is rotatably connected to the supporting portion 23.

[0048] More specifically, the clamping portion 30 is configured in a crescent shape, and the chain 40 is connected to one end of the crescent shape. The chain 40 can pull the clamping portion 30 toward one side of the screw portion 10 to rotate so that the other end of the crescent shape can abut against foreign matter present in the opening 24 .

[0049] Furthermore, the concave surface of the clamping portion 30 faces a direction away from the opening 24 when the clamping portion 30 is in a natural state.

[0050] Therefore, in practical application, when flat foreign objects such as lining plates and iron parts fall from the dry quenching furnace, the adjustable material clamping and foreign object taking device can be extended into the rotary sealing valve in the vertical direction after the foreign objects are spotted according to the size of the foreign objects, and the grasping part 20 is made close to the edge of the foreign objects. At this time, the clamping part 30 uses its own gravity to expand the opening as large as possible, so that the foreign objects can enter the opening 24. Afterwards, the foreign objects are kept in the opening 24, and the chain 40 is lifted up to rotate the clamping part 30 until the crescent-shaped end of the clamping part 30 abuts against the foreign objects. Moreover, in the process of lifting the chain 40, the more force is used to lift the chain 40, the greater the clamping force of the clamping part 30 on the foreign objects, thereby ensuring that the foreign objects are kept in the opening 24. Finally, the entire adjustable material clamping and foreign object taking device is lifted up to remove the foreign objects from the rotary sealing valve.

[0051] It can be seen that the adjustable material clamping and foreign body removing device in this embodiment has the following advantages:

[0052] The adjustable material-blocking and foreign-object-removing device in this embodiment can extend into the rotary sealing valve to grab the stuck foreign objects, overcoming the difficulty of removing foreign objects in the narrow site and the high temperature of the foreign objects themselves (the coke discharge temperature of the rotary sealing valve is about 150°C), creating conditions for timely resumption of production and effectively ensuring production efficiency, and has great promotion and application value in the field of dry coke quenching systems.

[0053] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable material grabbing and foreign body removal device, used to extend into a rotary sealing valve in a vertical direction to grab foreign bodies, characterized in that: The device comprises: A screw portion, wherein the screw portion is configured in the shape of an elongated rod; A gripping portion, the gripping portion being rotatably connected to an end of the screw portion via a bearing, the gripping portion being rotatable with the axial direction of the screw portion as a rotation center, the gripping portion having an opening on a side away from the screw portion, the opening being outward along the axial direction of the screw portion; A clamping part, which is rotatably connected to the gripping part and symmetrically arranged on both sides of the opening, and one end of the clamping part is also connected to a chain, and the chain can pull the clamping part toward one side of the screw part to rotate; wherein the clamping portion is rotatably connected to the gripping portion in an eccentric manner, and a rotation center axis of the clamping portion is perpendicular to an axial direction of the screw portion, The clamping part is configured in a crescent shape, the chain is connected to one end of the crescent shape, and the outer periphery of the clamping part is provided with an arc joint surface, and the arc joint surface is oriented toward the opening when the clamping part is in a natural state. When the adjustable material-removing foreign object device extends into the rotary sealing valve in the vertical direction to grab foreign objects, the chain pulls the clamping part toward one side of the screw part to rotate, and the arc joint surface follows the clamping part to rotate around the rotation axis of the clamping part until it abuts against the foreign object in the opening. The chain is lifted so that the other end of the crescent shape abuts against the foreign object in the opening, clamping the foreign object in the opening, and then the adjustable material-removing foreign object device is lifted to remove the foreign object from the rotary sealing valve.

2. The adjustable material-removing foreign body device according to claim 1, characterized in that: The grabbing portion comprises: Base seat; a rotating portion connected to the base seat and extending toward the screw portion, the rotating portion being rotatably connected to an end of the screw portion via a bearing; A support portion, wherein the support portion is connected to the base seat and extends toward a side away from the screw portion. There are two support portions, the two support portions are arranged at an interval, the opening is formed between the two support portions, and the clamping portion is rotatably connected to the support portion.

3. The adjustable material-removing foreign body device according to claim 1, characterized in that: The concave surface of the clamping portion faces a direction away from the opening when the clamping portion is in a natural state.

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