RU2255954C1 - Device for cleaning doors of coke ovens - Google Patents

Abstract

FIELD: coke industry.

SUBSTANCE: device comprises frame with vertical guides, at least two carriages movably mounted in the vertical guides, holders pivotally connected with the edges of each carriage, load-carrying working members for cleaning the sealing frame, two working members for cleaning sides of the lining of the door mounted on each carriage uniformly with respect to its horizontal symmetry axis, and drive for reciprocating the carriages. The drive comprises chain which is mounted on the top and bottom sprockets and interconnects the carriages. Each carriage is additionally provided with at least two working members for cleaning gas-discharging passages in the door which are mounted between the working members for cleaning side of the lining of the door. The holders of working members for cleaning the sealing frame are provided with guiding members that cooperate with the outer side of the sealing frame and have adjustable arresters mounted at the edges of the carriage for control of position of the cleaning working members with respect to the sealing frame surface to be cleaned. The horizontal guide is interposed at the bottom part of the frame between the vertical guides and receives movably mounted carriage that carries the working members for cleaning the bottom door brick-holder.

EFFECT: improved design and enhanced quality of cleaning.

3 cl, 9 dwg

Description

The invention relates to the equipment of coke oven batteries, in particular to devices for cleaning the doors of coke ovens with horizontal coking chambers, and can be used on machines serving the coke oven battery on the machine and coke sides.

In recent years, certain successes have been achieved in the coke and chemical industry to reduce harmful emissions into the atmosphere. However, the problem of gas leakage through the doors of coke ovens remains unsolved and, as it improves, the way to prevent or capture emissions from main sources (furnace loading, coke production) is becoming increasingly important.

The leakage of gases through the doors of coke ovens is a consequence of a violation of the tightness of the doors due to the deposition of coal tar, which condenses during coking on colder sections of the doors of coke ovens. Such areas are a sealing frame, brick holders and gas exhaust channels between them. During successive coking cycles, the coal tar hardens to form various carbon deposits having a consistency from wet sludge to a dense solid deposit. When the door is removed from the coke oven, soft deposits often sag and then harden on the sealing frame or brick holders, causing poor sealing during subsequent installation of the door, and deposits in the gas ducts prevent the free passage of gas from the bottom of the furnace to the top, which is extremely necessary to ensure uniform coking and pressure distribution in the furnace.

To remove carbon deposits from the above sections of the door, devices for cleaning the doors of a coke oven with mechanical cleaning agents have gained priority in coke oven production. Despite the large variety of such devices, which differ from each other in the design of the working cleaning bodies (brushes, scrapers, milling cutters) and the nature of their movement (in a closed circuit, reciprocating, oscillatory), none of them currently meets the requirements operation and requires further improvement.

From patent and scientific and technical information it is known, for example, a device for cleaning the doors of coke ovens, which contains a U-shaped supporting frame with holders at the free ends of which vertical support posts are movably mounted. On the latter, in alternating order and symmetrically lining the doors, working cleaning bodies are mounted, made in the form of scrapers for cleaning the vertical sections of the sealing frame, the lateral surfaces of the lining and the exhaust ducts of the coke oven door. Vertical support racks during the working cycle of cleaning are moved from the starting position to the working one for cleaning the exhaust pipes and the side surfaces of the door lining. To ensure the mobility of the support racks relative to the supporting frame, the device is equipped with several connecting leads, dispersed along the height, with one or more drive hydraulic cylinders. To fix the support posts with a power circuit and the supporting frame in the cleaning position, one or more locking devices are used in the device (see the description of the invention to EP No. 0295407, class C 10 V 43/04, publ. 08.08.90).

The known device provides cleaning of the vertical sections of the sealing frame, lining and exhaust ducts of the door, but by its design the device does not allow cleaning of the upper and lower horizontal sections of the sealing frame and lining of the door, which is also necessary, especially the lower sections where the resin accumulates the most.

A device for cleaning the doors of coke ovens is also known (see Japanese Patent Specification No. 5749592, class C 10 B 43/04, publ. 10/22/82), which partially eliminates the disadvantages of the above device. The technical solution of this device is closest to the claimed invention both in essence and in terms of the result achieved.

This device contains a vertical support frame on which the left and right vertical guides are mounted symmetrically to its vertical axis. In these rails movably mounted on one carriage, which are interconnected by traction chains of the drive, which tells them the reciprocating motion. On each carriage along its edges there are pivotally mounted holders in the vertical plane that carry working bodies for cleaning the sealing frame, and in the middle part there are mounted working bodies for cleaning the side surfaces of the door lining, which are uniformly located relative to the horizontal axis of symmetry of the carriage. On the vertical support frame at the top and bottom, copiers are installed that serve to guide the movement of the working bodies of cleaning the sealing frame along its contour in the upper and lower horizontal sections.

However, such a device in its design does not provide cleaning of the gas exhaust ducts of the door, which is necessary for the free passage of coking gases from the lower part of the furnace to its upper part to ensure uniform pressure distribution in the furnace, which allows to reduce gas emissions through door seals into the surrounding space.

In addition, this device does not allow high-quality cleaning of the radial curves of the sealing frame at the upper and lower horizontal sections, since copiers designed to orient the cleaning bodies relative to the cleaned areas of the sealing frame do not provide a strict orientation of the cleaning bodies, especially on the radiuses of the sealing frame .

The known device, in addition to the foregoing, also does not allow cleaning of the lower horizontal portion of the brick holder of the door, where tar and graphite deposits accumulate most of all, which impede reliable installation of the door in the coke oven chamber.

The basis of this invention is the task to improve the known device for cleaning doors of coke ovens, in which by additionally installing means for cleaning the exhaust ducts and the lower brick holder of the door, as well as ensuring strict orientation of the working bodies relative to the sealing frame and lower brick holder of the door, effective and high-quality cleaning is achieved doors of coke ovens, and thereby ensures the required gas tightness of the doors of coke ovens.

The problem is solved in that in the device for cleaning the doors of coke ovens, including a frame with vertical guides, at least two carriages movably mounted in the specified vertical guides, holders pivotally mounted on the edges of each carriage, carrying working bodies for cleaning the sealing frame, two working body cleaning side surfaces of the lining of the door mounted on each carriage evenly relative to its horizontal axis of symmetry, and a drive for reciprocating movement to carriages containing a traction chain mounted on the upper and lower sprockets connecting the carriages according to the invention, each carriage is additionally equipped with at least two working bodies for cleaning the exhaust ducts of the door, which are installed between the working bodies for cleaning the side surfaces of the door lining, holders of the working bodies for cleaning the sealing the frames are equipped with guide elements interacting with the outer wall of the sealing frame, and are equipped with adjustable stops mounted on ayah carriage for adjusting the position of working organs of relatively clean the cleaning surface of the sealing frame, and in the lower part of the frame between the vertical guides mounted horizontal rail, wherein the carriage is movably mounted, which carries the working bodies kirpichederzhatelya lower cleaning door.

In accordance with the invention, each working body for cleaning the gas outlet ducts of the door is made in the form of horizontally paired flat holders, one end of which is pivotally mounted on the carriage, and the other end is equipped with removable scrapers, and for installing the latter in the working or initial position, their holders are approximately in the middle the parts are pivotally connected to a spring-loaded rod, the free end of which is movably connected to one shoulder of the two-shouldered lever pivotally mounted on the carriage, while the other lever arm is provided EHO roller cooperating with the carriage while moving cam attached to the side wall of the vertical frame approximately in its middle portion.

The working body for cleaning the lower brick holder of the door is made in the form of a removable U-shaped scraper, fixed on the base, which is mounted on the trolley by hinged supports with the possibility of plane-parallel movement in the vertical plane and provided with a compression spring mounted on the trolley, while for reciprocating movement of the trolley on both sides of it on the drive traction chain leashes are fixed.

The scraper of the working body for cleaning the sealing frame is made in the form of a truncated trihedral pyramid, two converging faces of which have concave surfaces forming cutting edges with the lower base.

The proposed technical solution of the device provides effective and high-quality cleaning of the sealing frame, gas exhaust channels and the lower brick holder of the coke oven door, which ensures the door gas density required by the operating conditions, which significantly reduces the emissions of coking gases into the environment. This is achieved as follows:

- installation on the carriages of the working bodies for cleaning the gas outlet ducts of the door and their design, which allows reliable and high-quality cleaning of the gas outlet ducts of the door;

- the installation on the holders of the working bodies of the cleaning of the sealing frame of the guide elements interacting with the outer wall of the sealing frame, and on the carriages of adjustable stops that change the position of the holders relative to the surface to be cleaned of the sealing frame, and the new form of the working bodies of cleaning the sealing frame, which ensures strict orientation of the working bodies of cleaning relatively cleaned surfaces and as a result improves the quality of cleaning both vertical and horizontal sections with rounded corners pounding frame;

- installation in the lower part of the device frame between the vertical guides of horizontal guides, in which, by means of the drive traction chain equipped with leads, a trolley is mounted movably carrying the cleaning bodies of the lower brick holder, which also ensures strict orientation of the cleaning bodies with respect to the surface of the brick holder to be cleaned and, as a result, increases quality of cleaning the surface of the lower brick lining of the door.

Therefore, each of the new significant features of the claimed invention contributes, and their entirety ensures the achievement of the required technical result, and thus solve the problem.

The invention is fully disclosed on a specific example of its implementation with reference to the accompanying drawings, where:

figure 1 shows a General view of the device for cleaning the doors of coke ovens, front view;

figure 2 is the same, a section aa in figure 1;

figure 3 is a General view of the carriage installed in the initial position, front view with partial cuts;

figure 4 is a General view of the working body of the cleaning of the exhaust ducts of the door, section BB in figure 1;

figure 5 is a General view of the working body of the cleaning sealing frame, section BB in figure 1;

figure 6 - section GG in figure 4, rotated 90 °;

Fig.7 is a section DD in Fig.5;

in Fig.8 is a General view of the working body of the cleaning of the lower brick holder, section FJ in Fig 1;

figure 9 is a scraper of the working body of the cleaning sealing frame, made in a perspective view.

A device for cleaning the doors of coke ovens (see Figs. 1 and 2) contains a frame made in the form of a welded structure of two pairs of vertical rails 1 and 2, which are interconnected at the top of the frame 3, and at the bottom - horizontal rails 4, carriages 5 and 6, movably mounted in respective guides 1 and 2 by means of rollers 7, a cart 8, which is movably mounted in horizontal guides 4 by means of rollers 9 (see FIG. 8), and a drive for reciprocating movement of the carriages 5 and 6 and the cart 8, including mounted on the frame 3, the motor gearbox 10, the drive 11 and the sprocket guides 12 and 13, the traction chain 14, enveloping these sprockets and connecting the carriages 5 and 6 at the top, and the traction chain 15, enveloping the sprockets 16 and 17 and connecting carriages 5 and 6 at the bottom. On the traction chain 15, leashes 18 and 19 are fixed, interacting with the trolley 8 for its reciprocating movement in horizontal guides 4.

On each carriage 5 and 6 there are two working bodies for cleaning the sealing frame 20, the lateral vertical surfaces of the lining 21 and the exhaust channels 22 of the door 23 (see figures 1 and 4).

The working bodies for cleaning the sealing frame 20 (see Figs. 3, 5 and 7) are made in the form of holders 24, which are pivotally mounted along the edges of the carriages 5 and 6 by means of axes 25 and sliding bearings 26. Scrapers 27 and guides are fixed to the free ends of the holders 24 elements 28. To clamp the scrapers 27 to the surface to be cleaned of the sealing frame 20, torsion springs 29 are installed on the axes 25, which interact with the holders 24, and to adjust the position of the holders 24 relative to the sealing frame 20 (see Fig. 7), adjustable carriages 5 and b are installed bolts 30 in interacting with stops 31 fixed on holders 24. Scraper 27 (see Fig. 9) is made in the form of a truncated trihedral pyramid, two converging faces 32 and 33 of which have concave surfaces forming cutting edges 35 and 36 with the lower base 34.

To clean the vertical side surfaces of the lining 21 (see FIGS. 1, 2 and 3), holders 37 are mounted on the carriages 5 and 6 at an angle to the horizontal, on which removable V-shaped scrapers 38 are fixed.

The working bodies for cleaning the exhaust ducts 22 (see FIGS. 3, 4 and 6) are made in the form of paired flat holders 39, which are pivotally mounted on the carriages 5 and 6 in a horizontal plane. At the free ends of the holders 39, removable flat scrapers 40 are fixed. To install the scrapers 40 in the working or initial position, the holders 39 are pivotally connected to a rod 41 provided with a compression spring 42, while the free end of the rod 41 is movably connected to the shoulder 43 of the two shoulders of the lever 44, pivotally mounted on the carriage 6. The other shoulder 45 of the lever 44 is provided a roller 46, interacting when moving the carriage 6 with a copier 47 or 48, which are mounted with offset relative to each other and mounted on the respective side vertical walls 49 and 50 of the frame.

On the trolley 8 (see Fig. 8), a cleaning element for the lower brick holder 51 is installed, which is made in the form of a removable U-shaped scraper 52, fixed on the base 53. The latter is mounted on the trolley 8 by means of hinged supports 54 and 55 and is spring-loaded with a compression spring 56 mounted on trolley 8.

To orient the door 23 of the coke oven when it is inserted into the cleaning device on the frame (see Figs. 1 and 2), the guide brackets 57 and 58 are symmetrical to the vertical axis 59 of the device at the top and bottom, and stops 60 are installed in the middle part of the frame, interacting with support rollers 61 doors 23.

To install the device on the metal structures of the serving machine (coke pusher or door-lifting machine, which are not shown in the drawing) on the device frame (see Fig. 2), a bracket 62 is mounted at the top, covering the beam 63 of the metal structure of the service machine with gaps, and a bracket 64 is fixed at the bottom, which by means of a guide rod 65, a compression spring 66 and a spherical washer 67 mounted on a support 68, and a thrust roller 69, which is installed in the inner cavity of the support 68, mounted on a metal structure serving machine other (not shown in the drawing).

The operation of the device is controlled by a command device that controls the position of the carriages (upper, middle and lower), and a door position sensor when it is installed in the cleaning device (the indicated equipment is not shown in the drawing).

A device for cleaning the doors of coke ovens works as follows.

In the initial position (see FIGS. 1, 2 and 3), the carriages 5 and 6 with the working bodies for cleaning the sealing frame 20, the lateral vertical surfaces of the lining 21 and the exhaust channels 22 are in the middle position in the vertical guides 1 and 2, while the rollers 46 the working bodies for cleaning the exhaust ducts 22 (see FIGS. 4 and 6) are located on the copiers 47 and 48, the springs 42 are in a compressed state and the rods 40 in the initial position. The cart 8 with the working body for cleaning the lower brick holder 51 is in the extreme left position.

For cleaning, the removed door 23 is inserted into the opening of the device frame between the vertical guides 1 and 2 by means of a doorway device of a service machine (not shown). In this case, the guide brackets 57 and 58 strictly orient the surfaces to be cleaned 20, 21 and 22 of the door 23 with respect to the corresponding working bodies cleaning, guide elements 28, interacting with the outer wall of the sealing frame 20, set the holders 24 in the working position, and the scrapers 27 on the cleaned surface of the sealing frame 20 (see Fig.7). Scrapers 38 are installed on the vertical lateral surfaces of the lining 21 of the door 23. After the door 23 is installed in the working position to clean it by the action of the support rollers 61 of the door 23 on the stops 60, a sensor (not shown) is triggered, which gives a command to turn off the drive of the door-opening device (on the drawing is not shown) for moving the door 23 and turning on the gear motor 10. The latter signals the rotation of the drive sprocket 11, which, by moving the traction chain 14 to the left, tells the carriage 5 to move down and the carriage 6 to go up. When moving the carriages 5 and 6, the sealing frame 20 is cleaned by means of scrapers 27, the lateral vertical surfaces of the lining 21 by means of scrapers 38 and gas exhaust channels 22 by means of scrapers 40, which when the rollers 46 are rolled from the copiers 47 and 48 by compression springs 42 acting on the rods 41 and holders 39, smoothly enter the exhaust ducts 22. When the carriage 6 reaches the upper position, and the carriage 5 the lower position of the leashes 18, installed on the left side of the traction chain 15, come into contact with the carriage 8 and move it from the left position to the right, while cleaning with a scraper 52 of the lower brick holder 51. At the same time, the holders 24 by means of guide elements 28 interacting with the sealing frame 20 are rotated around the axes 25 in a horizontal position and move the scrapers 27 along the radius sections and along the upper and lower horizontal sections of the sealing frame 20, cleaning them. While the scrapers 27 have a stroke length of 10-15 mm longer than the middle part of the horizontal sections of the sealing frame 20.

When the carriages 5 and 6, respectively, reach the lower and upper positions, a command device is activated (not shown in the drawing), which switches the gear motor 10 to reverse rotation of the drive sprocket 11, which moves the traction chain 14 from left to right and, accordingly, the carriage 5 up and the carriage 6 down which carry out in a similar manner the cleaning of the above surfaces of the door 23 by means of working cleaning bodies. When the carriage 6 reaches the lower position, the leashes 19 come into contact with the trolley 8 and move it from the right to the left, while re-cleaning with a scraper 52 the lower brick holder 51 of the door 23.

After the above operation is completed, the command device (not shown in the drawing) re-activates and switches the gear motor 10 to move the carriages 5 and 6 to the initial middle position. When the carriages 5 and 6 reach the middle position, the rollers 46 run over the copiers 47 and 48 and the holders 39 with the scrapers 40 are brought to the initial position, and the control device turns off the gear motor 10 and gives the command for the drive of the removable device of the service machine (not shown) to move cleaned door 23 to its original position.

When cleaning the door of the next served coke oven, the cycle of the device is repeated.

Claims (4)

1. A device for cleaning doors of coke ovens, including a frame with vertical guides, at least two carriages movably mounted in the indicated vertical guides, holders pivotally mounted on the edges of each carriage, carrying working bodies for cleaning the sealing frame, two working bodies for cleaning the side surfaces of the lining doors mounted on each carriage uniformly with respect to its horizontal axis of symmetry, and a drive for reciprocating movement of the carriages, comprising upper and lower sprockets, a traction chain connecting the carriages, characterized in that each carriage is additionally equipped with at least two working bodies for cleaning the exhaust ducts of the door, which are installed between the working bodies for cleaning the side surfaces of the door lining, the holders of the working bodies for cleaning the sealing frame are provided with guides elements interacting with the outer wall of the sealing frame, and are equipped with adjustable stops mounted on the edges of the carriage to adjust the position Ia working bodies relatively clean the cleaning surface of the sealing frame, and in the lower part of the frame between the vertical guides mounted horizontal rail, wherein the carriage is movably mounted, which carries the working bodies kirpichederzhatelya lower cleaning door. 2. The device for cleaning the doors of coke ovens according to claim 1, characterized in that each working body for cleaning the gas exhaust ducts of the door is made in the form of horizontally paired flat holders, one end of which is pivotally mounted on the carriage, and the other is equipped with removable scrapers, and for installation of the latter in the working or initial position, their holders in the middle part are pivotally connected to a spring-loaded rod, the free end of which is movably connected to one shoulder of the two-shouldered lever, pivotally mounted on the carriage, while the other arm of the lever is equipped with a roller interacting when moving the carriage with a copier mounted on the side vertical wall of the frame approximately in its middle part. 3. The device for cleaning the doors of coke ovens according to claim 1, characterized in that the working body for cleaning the lower brick holder of the door is made in the form of a removable U-shaped scraper, mounted on the base, which is mounted on the trolley by hinged supports with the possibility of plane-parallel movement in the vertical plane and equipped with a compression spring mounted on the trolley, while for the reciprocating movement of the trolley on both sides of it on the drive traction chain leashes are fixed. 4. The device for cleaning the doors of coke ovens according to claim 1, characterized in that the scraper of the working body for cleaning the sealing frame is made in the form of a truncated trihedral pyramid, two converging faces of which have concave surfaces forming cutting edges with the lower base.

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