Displacement prevention device for transmission shaft of lower valve of coal lock of Lurgi furnace

Abstract

The utility model belongs to the technical field of Lurgi furnace coal locks, and particularly relates to a Lurgi furnace coal lock lower valve transmission shaft displacement preventing device which comprises a fixing cover. The number of the fixing covers is two. The two fixed covers are oppositely arranged; the inner side wall of each fixing cover is rotationally matched with a stabilizing wheel. The stabilizing wheels are uniformly distributed on the inner side wall of the fixed cover; the side wall of the lower valve transmission shaft can be stably limited through the fixing assembly by arranging the fixing cover and the stabilizing wheel, normal operation of the lower valve transmission shaft cannot be affected due to the fact that the stabilizing wheel and the fixing cover are in running fit, when the lower valve transmission shaft deviates, the stabilizing wheel can be stressed and transmitted to the fixing cover and the base plate, and the telescopic box can contract at the moment; according to the technical scheme, resilience force can be provided through the reset assembly, the deviated lower valve transmission shaft is jacked back to the original position, the lower valve transmission shaft can return to the original position more rapidly through the auxiliary pull-back assembly, and the anti-deviation effect of the Lurgi furnace coal lock lower valve transmission shaft is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of Lurgi gasifier coal locks, and specifically relates to a displacement prevention device for the transmission shaft of the lower valve of a Lurgi gasifier coal lock. Background Technique

[0002] The Lurgi gasifier is an industrial furnace widely used in industries such as metallurgy and chemical engineering. The transmission shaft of the lower valve of the coal lock is a shaft component used to connect the valve and the driving device. Its basic function is to transmit power to ensure that the valve can be opened or closed according to the instructions of the control system, thereby regulating the flow rate during the coal transportation process.

[0003] During the working process, the transmission shaft receives power from the driving device and drives the opening and closing mechanism of the valve through its own rotation. In this process, the transmission shaft must have sufficient strength and rigidity to withstand the load during the transmission process and maintain precise position and motion control.

[0004] After long-term use, it is found that the transmission shaft of the lower valve of the Lurgi gasifier coal lock will have a slight deviation, causing the gas of the lower valve to leak out. This will lead to friction between the shaft pin and the bearing, resulting in the stop of the transmission shaft of the lower valve and affecting the continuous high-load operation of the Lurgi gasifier.

[0005] Therefore, the utility model provides a displacement prevention device for the transmission shaft of the lower valve of a Lurgi gasifier coal lock. Content of the Utility Model

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background technique.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: A displacement prevention device for the transmission shaft of the lower valve of a Lurgi gasifier coal lock according to the utility model includes a fixed cover; there are two fixed covers; the two fixed covers are arranged oppositely; a stabilizing wheel is rotatably fitted on the inner side wall of each fixed cover; the stabilizing wheels are evenly distributed on the inner side wall of the fixed cover; the stabilizing wheels are in contact with the side wall of the lower valve transmission shaft; a backing plate is fixedly connected to the side wall of the fixed cover; a telescopic box is fixedly connected to the side wall of the backing plate; a fixing component is fixedly connected to the side wall of the telescopic box; a reset component is installed on the inner side wall of the telescopic box; an auxiliary pulling-back component is arranged on the side wall of the fixed cover. Through the setting of the fixed cover and the stabilizing wheels, the fixing component can be used to stably limit the side wall of the lower valve transmission shaft. Since the stabilizing wheel is rotatably fitted with the fixed cover, it will not affect the normal operation of the lower valve transmission shaft. When the lower valve transmission shaft is offset, the stabilizing wheel will transmit the force to the fixed cover and the backing plate. At this time, the telescopic box will contract. Through the setting of the reset component, a resilience force will be provided to push the offset lower valve transmission shaft back to its original position. Through the setting of the auxiliary pulling-back component, the return of the lower valve transmission shaft can be made more rapid, strengthening the anti-offset effect of the transmission shaft of the lower valve of the Lurgi gasifier coal lock.

[0008] Preferably, the reset assembly includes a telescopic rod; a telescopic rod is provided on the inner side wall of the telescopic box; the telescopic rod is fixedly connected to the side wall of the pad and the fixed plate; the telescopic rods are evenly distributed on the side wall of the telescopic box; each inner side wall of the telescopic rod is fixedly connected to a first spring; through the arrangement of the telescopic rod and the first spring, a rebound force can be provided when the lower valve drive shaft is offset, so that the lower valve drive shaft is reset, further enhancing the reset effect of the lower valve drive shaft of the Lurgi furnace coal lock.

[0009] Preferably, the fixing assembly includes a fixing plate; the side wall of the telescopic box is fixedly connected to the fixing plate; the middle part of the fixing plate is threadedly connected to a fixing screw; the device can be fixed on the mounting platform by setting the fixing plate and the fixing screw, thereby increasing the limiting stability of the stabilizing wheel on the lower valve drive shaft, and further strengthening the fixing effect of the Lurgi furnace coal lock lower valve drive shaft.

[0010] Preferably, a sponge ring is installed on the inner wall of the telescopic rod; the sponge ring is in sliding fit with the first spring; the inner wall of the sponge ring is in contact with the side wall of the first spring; through the provision of the sponge ring, the side wall of the first spring can be maintained and protected when the first spring is in use, thereby reducing rust on the surface of the first spring and further enhancing the maintenance effect of the transmission shaft of the Lurgi furnace coal lock lower valve.

[0011] Preferably, the auxiliary pullback assembly includes a fixing seat; each of the side walls of the fixed cover is fixedly connected to a fixing seat; the fixing seats are evenly distributed on the side walls of the fixed cover; the middle part of each group of the fixing seats is slidably fitted with a mounting bolt; the side wall of the mounting bolt is slidably fitted with a sliding sleeve; the end of the mounting bolt is embedded with a stabilizing assembly; every two ends of the sliding sleeve are connected to a second spring; the setting of the fixing seat and the mounting bolt can stabilize the installation of the sliding sleeve, and the setting of the second spring can assist in pulling back the offset lower valve drive shaft, further reducing the reset time of the Lurgi furnace coal lock lower valve drive shaft.

[0012] Preferably, the stabilizing assembly includes a fixed cover; a fixed cover is embedded on the top of the mounting bolt; the setting of the fixed cover can limit and block the sliding sleeve to prevent the sliding sleeve from slipping, further enhancing the limiting and blocking effect of the transmission shaft of the Lurgi furnace coal lock lower valve.

[0013] Preferably, the stabilizing wheel is made of high-temperature resistant material; by making the stabilizing wheel of high-temperature resistant material, the high temperature impact caused by the rotation of the lower valve drive shaft can be reduced, further reducing the heat impact of the operation of the Lurgi furnace coal lock lower valve drive shaft.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. A displacement prevention device for the transmission shaft of the lower valve of the Lurgi gasifier coal lock according to the present utility model can stably limit the side wall of the lower valve transmission shaft by means of the fixed cover and the stabilizing wheel. Since the stabilizing wheel is rotationally engaged with the fixed cover, it will not affect the normal operation of the lower valve transmission shaft. When the lower valve transmission shaft deflects, the stabilizing wheel will transmit the force to the fixed cover and the backing plate. At this time, the telescopic box will contract, and a resilience will be provided through the reset component to push the deflected lower valve transmission shaft back to its original position. Through the setting of the auxiliary pulling-back component, the return of the lower valve transmission shaft can be made more rapid, strengthening the anti-offset effect of the transmission shaft of the lower valve of the Lurgi gasifier coal lock.

[0016] 2. A displacement prevention device for the transmission shaft of the lower valve of the Lurgi gasifier coal lock according to the present utility model can provide a resilience when the lower valve transmission shaft deflects through the setting of the telescopic rod and the first spring, so that the lower valve transmission shaft is reset, further strengthening the reset effect of the transmission shaft of the lower valve of the Lurgi gasifier coal lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below with reference to the accompanying drawings.

[0018] Figure 1 is a perspective view of the present utility model;

[0019] Figure 2 is a schematic structural view of the sliding sleeve of the present utility model;

[0020] Figure 3 is a schematic structural view of the telescopic rod in the present utility model;

[0021] Figure 4 is a schematic structural view of the first spring in the present utility model.

[0022] In the figure: 1, fixed cover; 11, stabilizing wheel; 12, backing plate; 13, telescopic box; 2, telescopic rod; 21, first spring; 3, fixing plate; 31, fixing screw; 4, sponge ring; 5, fixing seat; 51, mounting bolt; 52, sliding sleeve; 53, second spring; 6, fixing cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Such as Figures 1 to 4As shown in the figure, a displacement prevention device for the transmission shaft of the lower valve of the Lurgi coal lock in the embodiment of the utility model includes a fixed cover 1; there are two fixed covers 1; the two fixed covers 1 are arranged oppositely; a stabilizing wheel 11 is rotatably fitted on the inner side wall of each fixed cover 1; the stabilizing wheels 11 are evenly distributed on the inner side wall of the fixed cover 1; the stabilizing wheel 11 is in contact with the side wall of the lower valve transmission shaft; a backing plate 12 is fixedly connected to the side wall of the fixed cover 1; a telescopic box 13 is fixedly connected to the side wall of the backing plate 12; a fixing component is fixedly connected to the side wall of the telescopic box 13; a reset component is installed on the inner side wall of the telescopic box 13; an auxiliary pulling-back component is arranged on the side wall of the fixed cover 1; during operation, through the fixed cover 1, the stabilizing wheel 11 and the fixing component can prevent the lower valve transmission shaft from shifting and stabilizing. When the lower valve transmission shaft shifts, the backing plate 12 will push the telescopic box 13 to contract, and the reset component is used to reset the stabilizing wheel 11 and the lower valve transmission shaft. The auxiliary pulling-back component can make the reset more rapid and reduce the influence of the shift of the lower valve transmission shaft; through the setting of the fixed cover 1 and the stabilizing wheel 11, the fixing component can be used to stably limit the side wall of the lower valve transmission shaft. Since the stabilizing wheel 11 is rotatably fitted with the fixed cover 1, it will not affect the normal operation of the lower valve transmission shaft. When the lower valve transmission shaft shifts, the stabilizing wheel 11 will transmit the force to the fixed cover 1 and the backing plate 12. At this time, the telescopic box 13 will contract. Through the setting of the reset component, a resilience will be provided to push the shifted lower valve transmission shaft back to its original position. Through the setting of the auxiliary pulling-back component, the return of the lower valve transmission shaft can be made more rapid, strengthening the anti-shift effect of the transmission shaft of the lower valve of the Lurgi coal lock.

[0025] As Figures 3 to 4 shown, the reset component includes a telescopic rod 2; the telescopic rod 2 is arranged on the inner side wall of the telescopic box 13; the telescopic rod 2 is fixedly connected to the side walls of the backing plate 12 and the fixing plate 3; the telescopic rods 2 are evenly distributed on the side wall of the telescopic box 13; a first spring 21 is fixedly connected to the inner side wall of each telescopic rod 2; during operation, through the telescopic rod 2, it can contract synchronously when the telescopic box 13 contracts due to the shift of the lower valve transmission shaft. Through the first spring 21, a resilience can be provided when the telescopic rod 2 contracts to push the backing plate 12 back to its original position, thereby resetting the shifted lower valve transmission shaft; through the setting of the telescopic rod 2 and the first spring 21, a resilience can be provided when the lower valve transmission shaft shifts to reset the lower valve transmission shaft, further strengthening the reset effect of the transmission shaft of the lower valve of the Lurgi coal lock.

[0026] As Figures 1 to 4 shown, the fixing component includes a fixing plate 3; the fixing plate 3 is fixedly connected to the side wall of the telescopic box 13; a fixing screw 31 is threadedly connected to the middle of the fixing plate 3; during operation, through the fixing plate 3 and the fixing screw 31, the device can be fixed on the installation plane, making the limit of the stabilizing wheel 11 on the lower valve transmission shaft more stable; through the setting of the fixing plate 3 and the fixing screw 31, the device can be fixed on the installation platform, increasing the limit stability of the stabilizing wheel 11 on the lower valve transmission shaft and further strengthening the fixing effect of the transmission shaft of the lower valve of the Lurgi coal lock.

[0027] As Figure 4 shown, a sponge ring 4 is installed on the inner side wall of the telescopic rod 2; the sponge ring 4 is in sliding fit with the first spring 21; the inner side wall of the sponge ring 4 contacts the side wall of the first spring 21; during operation, by injecting a maintenance liquid into the sponge ring 4, the side wall of the first spring 21 can be maintained each time the first spring 21 is used, reducing the obstruction caused by the rust of the first spring 21; through the setting of the sponge ring 4, the side wall of the first spring 21 can be maintained and protected during the use of the first spring 21, reducing the rust on the surface of the first spring 21, and further strengthening the maintenance effect of the transmission shaft of the coal lock lower valve of the Lurgi furnace.

[0028] As Figures 2 to 3 shown, the auxiliary pulling-back assembly includes a fixed seat 5; a fixed seat 5 is fixedly connected to the side wall of each fixed cover 1; the fixed seats 5 are evenly distributed on the side wall of the fixed cover 1; a mounting bolt 51 is in sliding fit in the middle of each group of fixed seats 5; a sliding sleeve 52 is in sliding fit with the side wall of the mounting bolt 51; a stabilizing component is embedded at the end of the mounting bolt 51; a second spring 53 is connected between the ends of every two sliding sleeves 52; during operation, when the lower valve transmission shaft deflects, the movement of the fixed cover 1 will stretch the second spring 53, and when the second spring 53 is stretched, it will provide a pulling-back force to assist in pulling back and resetting the fixed cover 1, reducing the reset time of the lower valve transmission shaft; through the setting of the fixed seat 5 and the mounting bolt 51, the sliding sleeve 52 can be stably installed, and through the setting of the second spring 53, the deflected lower valve transmission shaft can be assisted in pulling back, further reducing the reset time of the transmission shaft of the coal lock lower valve of the Lurgi furnace.

[0029] As Figures 2 to 3 shown, the stabilizing component includes a fixed cover 6; a fixed cover 6 is embedded at the top of the mounting bolt 51; during operation, the sliding sleeve 52 can be limited by the fixed cover 6 to prevent the sliding sleeve 52 from slipping off the side wall of the mounting bolt 51; through the setting of the fixed cover 6, the sliding sleeve 52 can be limited and blocked to prevent the sliding sleeve 52 from slipping off, further strengthening the limiting and blocking effect of the transmission shaft of the coal lock lower valve of the Lurgi furnace.

[0030] As Figures 1 to 3 shown, the stabilizing wheel 11 is made of a high-temperature resistant material; during operation, since the stabilizing wheel 11 is made of a high-temperature resistant material, the heat generated during the high-speed rotation of the lower valve transmission shaft can be reduced; through the setting that the stabilizing wheel 11 is made of a high-temperature resistant material, the high temperature generated by the rotation of the lower valve transmission shaft can be reduced, and further the heat influence during the operation of the transmission shaft of the coal lock lower valve of the Lurgi furnace is reduced.

[0031] Working principle: During operation, through the fixed cover 1, the stabilizing wheel 11 and the fixing components can prevent the lower valve drive shaft from shifting. When the lower valve drive shaft shifts, the backing plate 12 will push the telescopic box 13 to contract, and the reset components are used to reset the stabilizing wheel 11 and the lower valve drive shaft. The auxiliary pulling-back component can make the reset more rapid, reducing the influence of the shift of the lower valve drive shaft. When the telescopic box 13 contracts due to the shift of the lower valve drive shaft, the telescopic rod 2 can contract synchronously. When the telescopic rod 2 contracts, the first spring 21 can squeeze to provide a resilience force to push the backing plate 12 back to its original position, thereby resetting the shifted lower valve drive shaft. The device can be fixed on the installation plane through the fixing plate 3 and the fixing screws 31, making the limit of the stabilizing wheel 11 on the lower valve drive shaft more stable. By injecting a maintenance liquid into the sponge ring 4, the side wall of the first spring 21 can be maintained each time the first spring 21 is used, reducing the hindrance to use caused by the rust of the first spring 21. When the lower valve drive shaft shifts, the movement of the fixed cover 1 will stretch the second spring 53. When the second spring 53 is stretched, it will provide a pulling-back force to assist in pulling back and resetting the fixed cover 1, reducing the reset time of the lower valve drive shaft. The sliding sleeve 52 can be limited by the fixed cover 6 to prevent the sliding sleeve 52 from slipping off the side wall of the mounting bolt 51. Since the stabilizing wheel 11 is made of a high-temperature resistant material, the influence of the heat generated by the lower valve drive shaft during high-speed operation can be reduced.

[0032] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A displacement prevention device for the transmission shaft of the lower valve of the coal lock of a Lurgi gasifier, comprising a fixed cover (1); characterized in that: There are two fixed covers (1); the two fixed covers (1) are arranged oppositely; a stabilizing wheel (11) is rotatably fitted to the inner side wall of each fixed cover (1); the stabilizing wheels (11) are evenly distributed on the inner side wall of the fixed cover (1); the stabilizing wheels (11) are in contact with the side wall of the lower valve transmission shaft; a backing plate (12) is fixedly connected to the side wall of the fixed cover (1); a telescopic box (13) is fixedly connected to the side wall of the backing plate (12); a fixing component is fixedly connected to the side wall of the telescopic box (13); a reset component is installed on the inner side wall of the telescopic box (13); an auxiliary pulling-back component is arranged on the side wall of the fixed cover (1).

2. The displacement prevention device for the transmission shaft of the lower valve of the coal lock of the Lurgi gasifier according to claim 1, characterized in that: The reset component includes a telescopic rod (2); the telescopic rod (2) is arranged on the inner side wall of the telescopic box (13); the telescopic rod (2) is fixedly connected to the side walls of the backing plate (12) and the fixing plate (3); the telescopic rods (2) are evenly distributed on the side wall of the telescopic box (13); a first spring (21) is fixedly connected to the inner side wall of each telescopic rod (2).

3. A displacement prevention device for the transmission shaft of the lower valve of the coal lock of a Lurgi gasifier according to claim 1, characterized in that: The fixing component includes a fixing plate (3); the fixing plate (3) is fixedly connected to the side wall of the telescopic box (13); a fixing screw (31) is threadedly connected to the middle of the fixing plate (3).

4. A displacement prevention device for the transmission shaft of the lower valve of the coal lock of a Lurgi gasifier according to claim 2, characterized in that: A sponge ring (4) is installed on the inner side wall of the telescopic rod (2); the sponge ring (4) is in sliding fit with the first spring (21); the inner side wall of the sponge ring (4) is in contact with the side wall of the first spring (21).

5. The displacement prevention device for the drive shaft of the lower valve of the Lurgi coal lock according to claim 1, characterized in that: The auxiliary pulling-back component includes a fixed seat (5); the fixed seat (5) is fixedly connected to the side wall of each fixed cover (1); the fixed seats (5) are evenly distributed on the side wall of the fixed cover (1); an installation bolt (51) is in sliding fit in the middle of each group of fixed seats (5); a sliding sleeve (52) is in sliding fit with the side wall of the installation bolt (51); a stabilizing component is fitted at the end of the installation bolt (51); a second spring (53) is connected to the ends of every two sliding sleeves (52).

6. A displacement prevention device for the transmission shaft of the lower valve of the coal lock of a Lurgi gasifier according to claim 5, characterized in that: The stabilizing component includes a fixed cover (6); the fixed cover (6) is fitted at the top of the installation bolt (51).

7. A displacement prevention device for the transmission shaft of the lower valve of the coal lock of a Lurgi gasifier, characterized in that: The stabilizing wheel (11) is made of a high-temperature resistant material.

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