CN212536688U - Needle coke rotary kiln coke discharging valve - Google Patents

Abstract

The utility model provides a burnt valve is unloaded to needle coke rotary kiln, includes the burnt valve body that unloads of rectangle, unload and set up dam device in the burnt valve body, dam device includes baffle, balancing pole, balancing unit and pivot, the pivot sets up unloading burnt valve body lateral wall, baffle and the coaxial setting of balancing pole are in the pivot, the baffle is located unloads burnt valve body, the balancing pole is located unloads burnt valve body externally, unload set up on the burnt valve body inside wall with baffle complex baffle stopper, the balancing pole end is provided with balancing unit, unload in the burnt valve body from the top down set gradually two at least dam devices and with baffle complex baffle stopper, set up another dam device's pivot under every dam device's the baffle is terminal. Compared with the prior art, the utility model discloses a crisscross setting two at least dam devices from top to bottom utilizes lever principle, provides more stable sealed effect, realizes better shock resistance.

Description

Needle coke rotary kiln coke discharging valve

Technical Field

The utility model belongs to the technical field of needle coke calcining equipment, concretely relates to needle coke rotary kiln unloads burnt valve.

Background

The calcining link is an extremely important link in the production process of needle coke, raw coke, namely raw coke, needs to be conveyed to a needle coke rotary kiln for high-temperature calcination in the calcining link, a proper valve needs to be selected for blanking in the process of conveying the raw coke into the rotary kiln, good sealing performance of the valve needs to be ensured, external air is prevented from entering the rotary kiln, high-temperature gas in the rotary kiln is prevented from leaking, and meanwhile flying dust generated after the raw coke falls off is prevented from escaping from a feeding valve to pollute the environment, most of the coke unloading valves of the existing needle coke rotary kilns are star-shaped unloading valves, in the actual operation process, because the characteristics of the raw coke have certain viscosity, the separation bins in the star-shaped unloading valves are of triangular structures, the included angles of the separation bins close to a central shaft are narrow, the raw coke adhesion is easy to occur, and the blockage of the separation bins is caused, therefore, the star-shaped discharge valve is always blocked when used for conveying green coke, so that the star-shaped discharge valve cannot normally operate for a long time. Simultaneously, in order to guarantee the sealed effect of star type discharge valve, need keep the material of take the altitude on the upper portion of star type discharge valve, because when the inside compartment of star type discharge valve rotated, the one side that the compartment continued upwards rotation after unloading the material did not have the material to fill in the clearance between abundant compartment and the star type discharge valve inner wall this moment because the material has fallen this moment, so when the material less the sealing performance of star type discharge valve receive the influence easily for the sealed effect of star type discharge valve is unstable.

In order to solve the above technical problems, the patent with application number CN200920015888.0 discloses a rotary kiln double-flap type feeding valve, but has a certain technical problem that when a material falls from an upper valve plate, because the valve is not designed to have an extremely high height, the material reaches a lower valve plate within a short time, the weight of the material exceeds the counter weight of the lower valve plate, the lower valve plate is opened, at this time, because the upper material enters the upper valve plate and agrees with the closing speed of the upper valve plate, the condition that the lower valve plate is opened when the upper valve plate is not closed easily occurs, so that air enters the rotary kiln, heat, harmful gas and dust in the rotary kiln are also leaked out, and because the closing port of the valve plate is located in the middle of the valve, the material directly impacts the closing port when falling, so that the closing port is easily opened by the impact of the material, and the lower valve plate is in an open state when the material falls, at the moment, the upper valve plate in a closed state has a gap under the action of material impact, so that the sealing performance of the valve is reduced; simultaneously last valve is in the open mode at last valve plate unloading in-process, and when the material that accumulates had not surpassed lower valve plate counter weight on the lower valve plate this moment, lower valve plate originally should be in the closed condition, but the valve plate receives the impact that comes from the last valve plate material to appear the gap down, also can lead to the sealing performance decline of valve, consequently this application can't provide stable sealed effect.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that raw coke is unstable in valve seal effect when entering into needle coke rotary kiln through the valve, for solving above-mentioned problem, the utility model provides a needle coke rotary kiln unloads burnt valve, the stop device of cross arrangement about unloading burnt valve inside adoption, utilize lever principle to increase the detention time of material in the valve for there is sufficient buffer time to close after the stop device unloads, simultaneously because the closed mouth of stop device is located the lateral wall of valve body and not near the blanking point at valve body middle part, consequently, the structure of this application can reduce the impact effect of supplied materials to stop device, stop device in the valve is in the open mode simultaneously, two stop devices have one all the time to be in the closed condition when making raw coke whereabouts.

The purpose of the utility model is realized with the following mode:

the utility model provides a burnt valve is unloaded to needle coke rotary kiln, includes the burnt valve body that unloads of rectangle, unload and set up dam device in the burnt valve body, dam device includes baffle, balancing pole, balancing unit and pivot, the pivot sets up unloading burnt valve body lateral wall, baffle and the coaxial setting of balancing pole are in the pivot, the baffle is located unloads burnt valve body, the balancing pole is located unloads burnt valve body externally, unload set up on the burnt valve body inside wall with baffle complex baffle stopper, the balancing pole end is provided with balancing unit, unload in the burnt valve body from the top down set gradually two at least dam devices and with baffle complex baffle stopper, set up another dam device's pivot under every dam device's the baffle is terminal.

The balance device is a heavy block or an extension spring, the heavy block is arranged at the tail end of the balance rod, one end of the extension spring is connected with the tail end of the balance rod, and the other end of the extension spring is connected with an area, below the balance rod, of the outer side wall of the coke discharging valve.

The included angle between the baffle and the side wall of the coke discharging valve body is 50-60 degrees.

And the side wall of the coke discharging valve body is provided with an access hand hole.

And flanges are respectively arranged at two ends of the coke discharging valve body.

Compared with the prior art, the utility model has the advantages that at least two material blocking devices are arranged in an up-and-down staggered manner, when the raw coke is accumulated on the baffle plate of the upper material blocking device in a certain amount, the action of the balance device is overcome, so that the upper material blocking device is in an open state when the baffle plate rotates downwards, the raw coke starts to fall down, the lower material blocking device is kept in a closed state under the action of the balance device, when the raw coke on the baffle plate of the upper material blocking device falls backward, the baffle plate of the upper material blocking device rotates upwards under the action of the balance device, so that the upper material blocking device returns to the closed state, the raw coke is accumulated on the baffle plate of the lower material blocking device and slides along the baffle plate from the rotating shaft direction to the tail end direction of the baffle plate, when the raw coke gradually accumulated at the tail end of the baffle plate reaches a certain amount, enough gravity is provided, so that the baffle plate of the lower material, the raw coke continues to fall, the coke discharge valve can have a stable sealing effect by respectively opening and closing the upper and lower material blocking devices, and meanwhile, the rotating shaft of the lower material blocking device is arranged right below the tail end of the baffle of the upper material blocking device, so that the raw coke reaches the area, close to the rotating shaft, of the baffle of the lower material blocking device after falling from the baffle of the upper material blocking device; simultaneously because the closed mouth of dam device is located the lateral wall of valve body rather than near the blanking point at valve body middle part, the blanking point and the impact position of the raw coke from the dam device landing that is located the top are located near the pivot of the dam device of below in addition for the impact effect of supplied materials is less to the effect of baffle, consequently the structure of this application can reduce the impact effect of supplied materials to dam device, reduces the closed mouth of dam device and appears the possibility in gap.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention when the tension spring is used as the balancing device.

Wherein, 1 is a coke discharging valve body; 2, a material feeding device; 201 is a baffle plate of an upper material baffle device; 202 is a balance bar of the upper material blocking device; 203 is a rotating shaft of the upper material blocking device; 204 is a balancing device of the upper material blocking device; 3, a material descending blocking device; 301 is a baffle plate of a lower baffle device; 302 is a balance bar of the lower retaining device; 303 is a rotating shaft of the lower material blocking device; 304 is a balancing device of the lower retaining device; 4 is an upper baffle plate limiter; 5 is a lower baffle limiter; 6 is a hand hole for inspection; 7 is an upper flange; 8 is a lower flange; 9 is a weight; 10 is an extension spring.

Detailed Description

As shown in fig. 1 and fig. 2, the utility model provides a needle coke rotary kiln coke discharging valve, which comprises a rectangular coke discharging valve body 1, wherein a material blocking device is arranged in the coke discharging valve body 1, the material blocking device comprises a baffle, a balancing rod, a balancing device and a rotating shaft, the rotating shaft is arranged on the side wall of the coke discharging valve body 1, and the rotating shaft and the side wall of the coke discharging valve body 1 are sealed to ensure that the rotating shaft and the side wall of the coke discharging valve body 1 have good sealing performance, the baffle and the balancing rod are coaxially arranged on the rotating shaft, the baffle is rigidly connected with the rotating shaft, the balancing rod is rigidly connected with the rotating shaft, so that the relative relationship between the baffle and the balancing rod can not change, the baffle and the balancing rod can not move relatively, when the baffle rotates around the rotating shaft, the baffle can drive the rotating shaft to synchronously rotate, and the rotating shaft can drive the balancing rod to synchronously rotate, when the balance rod rotates around the rotating shaft, the balance rod can drive the rotating shaft to synchronously rotate, and meanwhile, the rotating shaft can drive the baffle plate to synchronously rotate, so that the baffle plate and the balance rod form a lever rotating around the rotating shaft through the rotating shaft, the baffle plate is positioned in the coke discharging valve body 1, the baffle plate is matched with the inner cross section of the coke discharging valve body 1 in shape, so that the baffle plate can rotate in the coke discharging valve body 1, the balance rod is positioned outside the coke discharging valve body 1, the tail end of the balance rod is provided with a balance device, the balance device provides downward force for the balance rod, the balance rod is enabled to rotate downward under the downward force of the balance device under the natural state that the baffle plate is not acted by external force, and the baffle plate can synchronously rotate upward around the rotating shaft; the coke discharging valve comprises a coke discharging valve body 1, a baffle plate stopper is arranged on the inner side wall of the coke discharging valve body 1, the baffle plate stopper is positioned below the position corresponding to a rotating shaft, so that the tail end of a baffle plate abuts against the baffle plate stopper when a material blocking device is closed, the position corresponding to the rotating shaft refers to the symmetrical position of the rotating shaft on the inner side wall of the coke discharging valve by taking the central line of the coke discharging valve as a symmetrical line, when the baffle plate abuts against the baffle plate stopper, the baffle plate is tightly attached to the inner side wall of the coke discharging valve, so that the matching of the baffle plate and the inner side wall of the coke discharging valve can realize good sealing effect to prevent gas and dust below the baffle plate from reaching the upper part of the baffle plate, at least two material blocking devices and the baffle plate stopper matched with the baffle plate are sequentially arranged in the coke discharging valve body 1 from top to bottom, a rotating shaft of another material blocking device is arranged under the tail end of, the two material blocking devices are an upper material blocking device 2 and a lower material blocking device 3, a rotating shaft 303 of the lower material blocking device is positioned under the tail end of a baffle 201 of the upper material blocking device, so that coke borne by the baffle 201 of the upper material blocking device just falls in the area of a baffle 301 of the lower material blocking device close to the rotating shaft 303 of the lower material blocking device when falling, as the baffle and a balance rod of the material blocking device form a lever taking the axis of the rotating shaft as a fulcrum, the moment of gravity of the coke acting on the lever is equal to or slightly greater than the moment of the balance device acting on the lever when a sufficient amount of coke is accumulated on the baffle 201 of the upper material blocking device according to the lever principle, at the moment, the baffle 201 of the upper material blocking device rotates downwards, the upper material blocking device 2 enters an opening state, the coke slides downwards from the baffle 201 of the upper material blocking device, and the moment arm of gravity of the coke is reduced when the baffle 301 of the lower material blocking device is close to the area of the rotating shaft 303 of the lower material blocking device, at this time, the green coke cannot provide enough torque to act on the baffle 301 of the lower material blocking device and make the baffle 301 of the lower material blocking device rotate downwards, so that the lower material blocking device 3 continues to keep a closed state; the number of the baffle plate limiters is two, the baffle plate limiters are respectively matched with the two material blocking devices, the baffle plate limiter matched with the upper material blocking device 2 is an upper baffle plate limiter 4, and the baffle plate limiter matched with the lower material blocking device 3 is a lower baffle plate limiter 5; when the stop device is closed, the baffle of the stop device is tightly attached to the inner side wall of the coke discharge valve body 1, so that the closed opening of the stop device is the inner side wall of the coke discharge valve body 1, and when raw coke enters the coke discharge valve body 1, the falling point of the raw coke is usually positioned in the middle position of the coke discharge valve body 1, so that the impact effect of the falling raw coke on the stop device is realized by keeping away from the impact action point and keeping away from the closed opening and the lever action principle, so that the stop device has better impact resistance effect than a valve in the prior art; when falling into the dam device of below from the dam device on upper portion from raw coke, the dam device that the falling point of raw coke is located the below is close to the position of pivot, consequently because impact action position principle closed mouth and lever principle, the probability that the gap appears in the dam device's of below closed mouth also is less than prior art, has better shock resistance than prior art, the gap more is difficult to appear in the dam device's of this application closed mouth, and then can provide more stable sealed effect.

The balancing device is a weight 9 or an extension spring 10, the weight 9 is arranged at the tail end of the balancing pole, and the weight 9 provides downward force for the balancing pole through the self gravity; one end of the extension spring 10 is connected with the tail end of the balance rod, the other end of the extension spring is connected with an area, below the balance rod, of the outer side wall of the coke discharging valve, the extension spring 10 is in a stretching state, and the elastic force direction is downward along the extension spring 10, so that the balance rod is stressed by downward force under the action of the extension spring 10.

The included angle between the baffle and the side wall of the coke discharging valve is 50 to 60 degrees, the included angle between the baffle and the side wall of the coke discharging valve is 50 to 60 degrees in the vertical direction, the included angle between the baffle and the side wall of the coke discharging valve is A, the value of A is 50 to 60 degrees, the value of A is determined according to the characteristic of the repose angle of the raw coke, the repose angle is also called a repose angle, the minimum angle formed by an object placed on an inclined plane and a horizontal surface when the object is in a critical state of sliding down along the inclined plane is defined, namely, the object on the inclined plane is easy to slide down along the inclined plane along with the increase of the inclination angle, when the object reaches the state of starting sliding down, the angle in the critical state is called the repose angle, when the included angle between the baffle and the side wall of the coke discharging valve is smaller than the repose angle of the raw coke, the raw coke is difficult to slide down along the baffle and easy to block, therefore, the physical characteristic and experimental verification of the, the speed and the gliding effect of the coke are most suitable.

The side wall of the coke discharging valve is provided with the maintenance hand hole 6, and a worker can inspect, repair and maintain the coke discharging valve through the maintenance hand hole 6, so that the working efficiency of the worker is improved.

The two ends of the coke discharging valve are respectively provided with a flange, the upper end of the coke discharging valve is provided with an upper flange 7, the upper flange 7 is used for connecting a feeding bin of the needle coke rotary kiln, the lower end of the coke discharging valve is provided with a lower flange 8, and the lower flange 8 is used for connecting a feeding hole of the needle coke rotary kiln.

The working process of the utility model is as follows:

in an initial state, no green coke enters the coke discharging valve body 1, and at the moment, the balance rod 202 of the upper material blocking device is acted by the downward force of the balance device 204 of the upper material blocking device, and as the baffle 201 of the upper material blocking device and the balance rod 202 of the upper material blocking device are rigidly connected with the rotating shaft 203 of the upper material blocking device, the baffle 201 of the upper material blocking device is upwards clung to the upper baffle limiter 4; the balance rod 302 of the lower material blocking device is acted by the downward force of the balance device 304 of the lower material blocking device, and the baffle 301 of the lower material blocking device and the balance rod 302 of the lower material blocking device are rigidly connected with the rotating shaft 303 of the lower material blocking device, so that the baffle 301 of the lower material blocking device is tightly attached to the upper baffle limiting stopper 4, and the upper material blocking device 2 and the lower material blocking device 3 are in a closed state in an initial state.

When the coke discharging valve starts to work, raw coke firstly enters the upper part of a coke discharging valve body 1 from a needle coke rotary kiln feeding bin through an upper flange 7, the falling point of the raw coke at the moment is positioned on the upper surface of a baffle 201 of an upper material blocking device, the raw coke is gradually accumulated on the baffle 201 of the upper material blocking device, meanwhile, as the baffle 201 of the upper material blocking device inclines downwards, the raw coke can slide to the tail end of the baffle 201 of the upper material blocking device along the baffle 201 of the upper material blocking device, the gravity of the raw coke is gradually increased along with the increase of the quantity of the raw coke, when the moment of the gravity of the raw coke acting on the baffle 201 of the upper material blocking device is slightly larger than the moment of the balance device 204 of the upper material blocking device acting on a balance rod 202 of the upper material blocking device, the baffle 201 of the upper material blocking device rotates downwards, the upper material blocking device 2 enters an opening state, and the raw coke gradually leaves the baffle 201 of the upper material blocking, because the coke accumulated on the baffle 201 of the upper material blocking device falls, the moment of the gravity of the coke still remained on the baffle 201 of the upper material blocking device acting on the baffle 201 of the upper material blocking device is smaller than the moment of the balance device 204 of the upper material blocking device acting on the balance rod 202 of the upper material blocking device, the balance rod 202 of the upper material blocking device rotates downwards and drives the rotating shaft 203 of the upper material blocking device to rotate synchronously, the baffle 201 of the upper material blocking device rotates upwards synchronously under the action of the rotating shaft 203 of the upper material blocking device, the tail end of the baffle 201 of the upper material blocking device is contacted with the upper baffle stopper 4 and then stops rotating, and the upper material blocking device 2 enters a closed state again; meanwhile, the falling point of the raw coke falling is the area of the baffle 301 of the lower material blocking device close to the rotating shaft 303 of the lower material blocking device, the raw coke falls to the area of the baffle 301 of the lower material blocking device close to the rotating shaft 303 of the lower material blocking device and then slides towards the tail end of the baffle 301 of the lower material blocking device along the baffle 301 of the lower material blocking device, at the moment, the distance from the raw coke to the rotating shaft 303 of the lower material blocking device is smaller than the distance from the raw coke on the baffle 201 of the upper material blocking device to the rotating shaft 203 of the upper material blocking device when the upper material blocking device 2 enters the opening state, therefore, the moment of the gravity of the raw coke on the baffle 301 of the lower material blocking device acting on the baffle 301 of the upper material blocking device is smaller than the moment of the gravity of the raw coke on the baffle 201 of the upper material blocking device when the upper material blocking device 2 enters the opening state, and the moment of the gravity of the raw coke on the baffle 301 of the lower material blocking device acting on the baffle 301 of the lower material blocking device is also smaller than the moment The moment of the balance rod 302 of the lower material blocking device is acted by the device 304, the baffle 301 of the lower material blocking device cannot rotate, so that the lower material blocking device 3 cannot immediately enter an open state when the upper material blocking device 2 is not completely closed after completing coke discharging work, a certain buffering time exists, the lower material blocking device 3 is prevented from entering the open state when the upper material blocking device 2 is not completely closed, the sealing performance of a coke discharging valve is prevented from being reduced, and a stable sealing effect cannot be provided; when the raw coke gradually slides downwards and is accumulated at the tail end of the baffle 301 of the lower material blocking device, the moment of the gravity of the raw coke on the baffle 301 of the lower material blocking device acting on the baffle 301 of the lower material blocking device is gradually increased, when the moment of the gravity of the raw coke on the baffle 301 of the lower material blocking device acting on the baffle 301 of the lower material blocking device is slightly larger than the moment of the balance device 304 of the lower material blocking device acting on the balance rod 302 of the lower material blocking device, the baffle 301 of the lower material blocking device rotates, the lower material blocking device 3 enters an open state, the raw coke slides down from the baffle 301 of the lower material blocking device, and freely falls under the action of the self gravity of the raw coke, enters the lower part of the coke discharge valve and enters the feed inlet of the rotary kiln through the lower flange 8, the upper material blocking device 2 is always in a closed state in the process, and the coke discharge valve continuously keeps a stable sealing effect.

In the working process of the coke discharging valve, the upper material blocking device 2 and the lower material blocking device 3 are both in a closed state in an initial state, when the green coke on the upper material blocking device 2 is accumulated to a certain amount, the upper material blocking device 2 enters an open state, the green coke falls onto the lower material blocking device 3, the lower material blocking device 3 cannot immediately enter the open state but continues to be in the closed state due to the lever principle, and the coke discharging valve continues to keep a good sealing effect; after a certain buffer time, coke formation can generate enough torque on the baffle 301 of the lower blocking device, the lower blocking device 3 enters an opening state, at the moment, the upper blocking device 2 is restored to a closing state, and the coke discharging valve continues to keep a good sealing effect, so that at least one blocking device of the coke discharging valve is always in the closing state in the working process, and the coke discharging valve can keep a stable sealing effect.

The baffle plates of the two material blocking devices arranged in the coke discharging valve are of flat plate structures without narrow included angle structures, so that the condition that raw coke is easy to block in the narrow structures is avoided.

Because the physical characteristic of raw coke self, can not be like fine sand or other similar particulate matters be in like the liquid flow similar flow state when sliding on the inclined plane, can cohere each other between the raw coke, consequently can not break away from the baffle together like the landing of fluid low discharge but certain quantity of raw coke when raw coke breaks away from on the baffle of dam device, consequently the quality volume that the raw coke that consequently can not appear bearing when dam device is in the open mode newly increases on the baffle equals with the reduction volume that breaks away from the whereabouts from the baffle, make the raw coke quality on the baffle unchangeable, the baffle is in dynamic balance just and no longer takes place the rotation because moment changes, and then makes dam device continuously keep the condition of open mode.

In the process, the time length of the process that the raw coke falls from the area, close to the rotating shaft 303 of the lower material blocking device, of the baffle 301 of the lower material blocking device to slide towards the tail end of the baffle 301 of the lower material blocking device along the baffle 301 of the lower material blocking device and finally can provide enough torque for the baffle 301 of the lower material blocking device is determined by the friction force between the raw coke and the baffle 301 of the lower material blocking device, the length of the baffle 301 of the lower material blocking device and the torque of the balance device 304 of the lower material blocking device on the balance rod 302 of the lower material blocking device, the time requirement is larger than the time required by the upper material blocking device 2 to reenter the closed state from the open state, and the upper material blocking device 2 restores the closed state when the lower material blocking device 3 enters the open state by adjusting the variable values in actual production.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims (5)

1. The utility model provides a burnt valve is unloaded to needle coke rotary kiln, includes the burnt valve body that unloads of rectangle, unload and set up dam device in the burnt valve body, dam device includes baffle, balancing pole, balancing unit and pivot, the pivot sets up unloading burnt valve body lateral wall, baffle and the coaxial setting of balancing pole are in the pivot, the baffle is located unloads burnt valve body, the balancing pole is located unloads outside the burnt valve body, unload and set up on the burnt valve body inside wall with baffle complex baffle stopper, the balancing pole end is provided with balancing unit, its characterized in that: at least two material blocking devices and a baffle limiter matched with the baffle are sequentially arranged in the coke discharging valve body from top to bottom, and a rotating shaft of another material blocking device is arranged right below the tail end of the baffle of each material blocking device.

2. The needle coke rotary kiln coke discharge valve as defined in claim 1, wherein: the balance device is a heavy block or an extension spring, the heavy block is arranged at the tail end of the balance rod, one end of the extension spring is connected with the tail end of the balance rod, and the other end of the extension spring is connected with an area, below the balance rod, of the outer side wall of the coke discharging valve.

3. The needle coke rotary kiln coke discharge valve as defined in claim 1 or 2, wherein: the included angle between the baffle and the side wall of the coke discharging valve body is 50-60 degrees.

4. The needle coke rotary kiln coke discharge valve as defined in claim 3, wherein: and the side wall of the coke discharging valve body is provided with an access hand hole.

5. The needle coke rotary kiln coke discharge valve as defined in claim 4, wherein: and flanges are respectively arranged at two ends of the coke discharging valve body.

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