Weight lifting device of coke oven heating exchange system

Abstract

The invention relates to a weight lifting device of a coke oven heating exchange system, which comprises a chain and a locking device, one end of the chain is connected with a transmission device of the coke oven heating exchange system, and the other end of the chain is connected with a waste gas weight and an air door through the locking device; the locking device is composed of a locking ring and a locking ring. The opening of the locking ring is locked and connected through matching of threads and a locking nut; the locking ring is arranged in the locking ring, and an opening of the locking ring can be sealed through the movable ring body. A traditional shackle type connection mode is improved into a double-insurance structure composed of the locking ring and the locking ring, the weight falling prevention function can be effectively achieved, the situation of chain blocking during weight lifting can be effectively prevented, the accident rate of weight falling and blocking of the exchange transmission device in the coke oven heating process is greatly reduced, and the safety of coke oven heating is improved. The production safety is improved, and the smooth production of the coke oven is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of coke oven coking, and in particular to a weight lifting device used in a coke oven heating exchange system. Background Art

[0002] At present, the development trend of coke ovens is to develop in the direction of large-scale. Large coke ovens generally adopt double-linked fire channels, segmented heating, and exhaust gas circulation. The coke oven temperature rise and constant temperature process are realized through the timed exchange of air and exhaust gas. That is, during the coke oven heating process, coal gas, air, and exhaust gas all need to be exchanged regularly through the coke oven heating exchange system. The coke oven heating exchange system is the core component of the coke oven heating system. It adopts full hydraulic transmission, drives the exhaust gas weight and air damper through the chain transmission device to realize the switching of exhaust gas and air. During the exchange process, the actions of lifting the weight, dropping the weight, raising the air door, and dropping the air door must be accurate. If the exhaust gas weight falls during the lifting process, the raw gas channel will be blocked, and the raw gas generated by the coke oven cannot be smoothly discharged, causing production accidents and even threatening personal safety. Therefore, in the coke oven production process, it is very important to ensure the accuracy of the lifting weight, raising the air door, dropping the weight, and dropping the air door of the exchange switch.

[0003] At present, in the weight lifting device of the coke oven heating exchange system, one end of the chain is connected to the pull ring on the corresponding exhaust gas weight or air damper through a shackle, and the other end is connected to the transmission device in the coke oven heating exchange. After multiple lifting of the weight (lifting the air damper) and dropping of the weight (dropping the air damper), the shackle is easy to loosen and fall off. After the shackle is dropped, the exhaust gas weight or air damper cannot be lifted normally, which will cause a production accident in which the waste gas cannot be discharged. In addition, in order to ensure that the corresponding exhaust gas channel or air channel is completely closed when the weight is dropped or the air damper is dropped, a certain amount of surplus is usually left in the length of the chain during the initial design. When the weight is dropped or the air damper is dropped, the shackle is easy to fall into the corresponding pull ring on the exchange switch. In the next exchange state, the shackle cannot be lifted smoothly because it is stuck in the pull ring, which not only causes the exchange transmission action to be blocked, but also shortens the effective chain length. The height increases when the weight is lifted or the air damper is lifted, and the channel cannot be completely closed when it falls again. Therefore, it is necessary to improve the weight-lifting device to prevent the weight from falling or the chain from getting stuck. Summary of the invention

[0004] The present invention provides a weight lifting device for a coke oven heating exchange system, which improves a traditional shackle type connection mode into a double insurance structure composed of a locking ring and a locking ring, which can not only effectively realize the function of preventing the weight from falling off, but also can position the pull ring through the locking ring arranged in the locking ring, effectively preventing the occurrence of chain jamming when lifting the weight, greatly reducing the accident rate of weight falling off and jamming of the exchange transmission device during the coke oven heating process, improving the safety of production, and ensuring the smooth progress of the coke oven production.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A weight-lifting device for a coke oven heat exchange system comprises a chain and a locking device, wherein one end of the chain is connected to a transmission device of the coke oven heat exchange system, and the other end of the chain is connected to an exhaust gas weight and an air damper via a locking device; the locking device consists of a locking ring and a locking ring; the opening of the locking ring is locked and connected via a thread and a locking nut; the locking ring is arranged inside the locking ring, and the opening of the locking ring can be closed by a movable ring body, one end of the movable ring body is hinged to the locking ring body via a hinge, and the other end of the movable ring body is locked and connected to the locking ring body via a lock buckle.

[0007] The exhaust gas weight and the air damper are respectively provided with pull rings at the connection places with the chain, and the pull rings are clamped in the locking ring after connection.

[0008] The locking ring body is composed of a chain connecting section, an intermediate connecting section and a pull ring connecting section; the chain connecting section has a semicircular ring structure that matches the chain diameter, and the pull ring connecting section has a semicircular ring structure that matches the pull ring diameter; the chain connecting section and the pull ring connecting section are connected as a whole through the intermediate connecting section, wherein the intermediate connecting section on one side is provided with an opening, the intermediate connecting section at one end of the opening is provided with a thread, and the intermediate connecting section at the other end of the opening is provided with a locking nut.

[0009] The locking ring is arranged inside the pull ring connecting section of the locking ring, and the locking ring has a diameter matched with the pull ring connecting section; the movable ring body is arranged on the top of the locking ring.

[0010] The locking ring body and the locking ring body are welded and fixed.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1) The traditional shackle connection is improved to a double insurance structure of "locking ring + locking ring", which can effectively prevent the weight from falling off;

[0013] 2) The locking ring inside the locking ring can position the pull ring, effectively preventing the chain from getting stuck when lifting the weight;

[0014] 3) The accident rate of the exchange transmission device falling off and getting stuck during the coke oven heating process is greatly reduced, the production safety is improved, and the smooth production of the coke oven is ensured.

[0015] 4) The device has a simple structure and is easy to maintain and replace;

[0016] 5) It has broad application prospects and is not only suitable for newly built coke ovens, but also for convenient equipment improvement of large coke ovens that have already been put into operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a weight lifting device of a coke oven heating exchange system described in the present invention.

[0018] Figure 2 It is a structural schematic diagram of the locking device of the present invention.

[0019] In the figure: 1. Chain 2. Locking ring 21. Thread 22. Locking nut 3. Locking ring 31. Movable ring body 4. Exhaust weight 5. Air damper 6. Pull ring DETAILED DESCRIPTION

[0020] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings:

[0021] like Figure 1 , Figure 2 As shown, a weight-lifting device of a coke oven heat exchange system described in the present invention comprises a chain 1 and a locking device, one end of the chain 1 is connected to a transmission device of the coke oven heat exchange system, and the other end of the chain 1 is connected to an exhaust gas weight 4 and an air damper 5 through a locking device; different from the conventional connection method using a shackle, the locking device described in the present invention is composed of a locking ring 2 and a locking ring 3; the opening of the locking ring 2 is locked and connected by a thread 21 and a locking nut 22; the locking ring 3 is arranged inside the locking ring 2, and the opening of the locking ring 3 can be closed by a movable ring body 31, one end of the movable ring body 31 is hinged to the locking ring body by a hinge, and the other end of the movable ring body is locked and connected to the locking ring body by a lock.

[0022] The exhaust gas weight 4 and the air damper 5 are respectively provided with pull rings 6 at the connection places with the chain 1 , and the pull rings 6 are stuck in the locking ring 3 after connection.

[0023] The locking ring body is composed of a chain connecting section, an intermediate connecting section and a pull ring connecting section; the chain connecting section has a semicircular ring structure that matches the diameter of the chain 1, and the pull ring connecting section has a semicircular ring structure that matches the diameter of the pull ring 6; the chain connecting section and the pull ring connecting section are connected as a whole through the intermediate connecting section, wherein the intermediate connecting section on one side is provided with an opening, a thread 21 is provided on the intermediate connecting section at one end of the opening, and a locking nut 22 is provided on the intermediate connecting section at the other end of the opening.

[0024] The locking ring 3 is arranged inside the pull ring connecting section of the locking ring 2 , and has a diameter matching the pull ring connecting section; the movable ring body 31 is arranged on the top of the locking ring 3 .

[0025] The locking ring body and the locking ring body are welded and fixed.

[0026] The weight lifting device of the coke oven heat exchange system described in the present invention comprises a chain 1, a locking ring 2 and a locking ring 3; the upper end of the chain 1 is connected to the transmission device of the coke oven heat exchange system, and the other end of the chain 1 is connected to the exhaust gas weight 4 and the air damper 5 arranged on the exchange switch through the locking device. The transmission device of the coke oven heat exchange system pulls the weight lifting device, and drives the corresponding exhaust gas weight 4 and the air damper 5 to perform opening and closing actions through the weight lifting device. The part of the chain 1 connected to the exhaust gas weight 4 and the air damper 5 adopts a locking ring 2 that is easy to disassemble and more reliable than a shackle, and is connected by a thread 21 arranged at the opening of the locking body and a locking nut 22 to achieve a firm connection. When the chain 1 is severely worn, the chain 1 can be quickly replaced by loosening the locking nut 22.

[0027] A locking ring 3 is provided inside the locking ring 2, and the locking ring body is connected to a movable ring body 31 by a hinge. After the pull ring 6 enters the locking ring 3, the movable ring body 31 is locked and fixed to the locking ring body by a lock, thereby fixing the relative positions of the locking ring 2 and the pull ring 6 to prevent interference between the two and obstruction of the weight lifting process.

[0028] The weight lifting device of the coke oven heating exchange system described in the present invention is arranged along the coke oven flue corridor and is arranged one-to-one corresponding to the waste gas weight 4 and air damper 5 of the exchange switch, and is used to realize the lifting and lowering actions of the waste gas weight 4 and air damper 5 of each exchange switch.

[0029] During the coke oven production process, the transmission device of the coke oven heating exchange system performs reversing operation at set time intervals. When the transmission device is in action, the exhaust gas weight 4 and the air damper 5 are driven by the weight lifting device to realize the opening and closing of the exhaust gas channel and the air channel on each exchange switch.

[0030] The installation and replacement process of the weight lifting device of the coke oven heat exchange system described in the present invention is as follows:

[0031] like Figure 1-Figure 2 As shown, before installation, loosen and remove the locking nut 22 to open the opening of the locking ring 2; then open the lock buckle on the locking ring 3, rotate the movable ring body 31 around the hinge, so that the opening of the locking ring 3 is also in the open state; insert the pull ring 6 at the corresponding exhaust gas weight 4 and air damper 5 into the locking ring 3 in the locking ring 2, lock the lock buckle on the locking ring 3, and then screw the locking nut 22 into the threaded section to lock the opening of the locking ring 2; after the installation is completed, debug the coke oven heating exchange system according to the conventional process, and put it into coke oven production after debugging; during maintenance, open the locking ring 3 and locking ring 2 of the weight lifting device in reverse order according to the above process, and then the weight lifting device can be removed for replacement.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A weight lifting device for a coke oven heat exchange system, comprising a chain and a locking device, wherein one end of the chain is connected to a transmission device of the coke oven heat exchange system, and the other end of the chain is connected to an exhaust weight and an air damper through a locking device; characterized in that: The locking device consists of a locking ring and a locking ring; the opening of the locking ring is locked and connected by means of a thread and a locking nut; the locking ring is arranged inside the locking ring, and the opening of the locking ring can be closed by a movable ring body, one end of the movable ring body is hinged to the locking ring body by a hinge, and the other end of the movable ring body is locked and connected to the locking ring body by a lock buckle.

2. The weight lifting device of the coke oven heat exchange system according to claim 1 is characterized in that: The exhaust gas weight and the air damper are respectively provided with pull rings at the connection places with the chain, and the pull rings are clamped in the locking ring after connection.

3. The weight lifting device of the coke oven heat exchange system according to claim 1, characterized in that: The locking ring body is composed of a chain connecting section, an intermediate connecting section and a pull ring connecting section; the chain connecting section has a semicircular ring structure that matches the chain diameter, and the pull ring connecting section has a semicircular ring structure that matches the pull ring diameter; the chain connecting section and the pull ring connecting section are connected as a whole through the intermediate connecting section, wherein the intermediate connecting section on one side is provided with an opening, the intermediate connecting section at one end of the opening is provided with a thread, and the intermediate connecting section at the other end of the opening is provided with a locking nut.

4. The weight lifting device of the coke oven heat exchange system according to claim 1, characterized in that: The locking ring is arranged inside the pull ring connecting section of the locking ring, and the locking ring has a diameter matched with the pull ring connecting section; the movable ring body is arranged on the top of the locking ring.

5. The weight lifting device of the coke oven heat exchange system according to claim 4, characterized in that: The locking ring body and the locking ring body are welded and fixed.

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