JPH0249466Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a sealing device for a waste incinerator that seals the surrounding area of a reciprocating rod incorporated in the waste incinerator.

[Conventional technology]

Conventionally, in municipal waste incinerators, waste such as municipal waste that is input into the incinerator from a hopper is dried and then transferred from a dust supply device to a drying stoker, a combustion stoker, and a post-combustion stoker. Combustion and post-combustion are performed, and the ash generated by combustion is solidified or discharged in an ash pit, etc., and the exhaust gas generated by combustion is sent to gas cooling equipment (including boilers), harmful gas removal equipment, and electrostatic precipitators. , white smoke prevention equipment, etc., and as a result, the amount of waste is reduced and stabilized. In other words, in the incinerator, high-temperature, high-pressure air is sent from below each stoker to forcefully dry, burn, and post-combust the waste, and the combustibles are turned into flue gas or fly ash and are led outside the incinerator. It will be destroyed.

By the way, in the above-mentioned garbage incinerator, each stoker consists of a movable stoker 11 and a fixed stoker 12, as shown in FIG.
is located. A plurality of movable stokers 11 are attached to a movable frame 17 equipped with wheels 14, and in order to reciprocate the movable stoker 11, a reciprocating rod 7 is attached to the movable frame 17.
is installed through the under-furnace chute 15, and a gland seal is normally applied to seal between the reciprocating rod 7 and the under-furnace chute 15.
In such a configuration, as the reciprocating rod 7 expands and contracts, that is, reciprocates, by the function of the hydraulic cylinder 16, the wheels 14 of the movable frame 17 run on the rails 13, and the movable frame 17 reciprocates. The movable stoker 11 is configured to move in a reciprocating manner.

[Problem that the invention attempts to solve]

By the way, in the above-mentioned garbage incinerator in which the movable frame 17 is reciprocated by the telescoping motion of the reciprocating rod 7, the reciprocating rod 7 is connected to the under-furnace chute 1.
Although the reciprocating rod 7 passes through a through hole 18 formed in the hydraulic cylinder 16, the reciprocating rod 7 may move up and down in addition to reciprocating due to the expansion and contraction movement of the hydraulic cylinder 16. However, regarding the gland seal that is built in to seal between the reciprocating rod 7 and the under-furnace chute 15, when the reciprocating rod 7 moves up and down and the center of the reciprocating rod 7 moves, the seal area will be damaged. Not only does the strain occur and the sealing performance deteriorates, but the reciprocating rod 7 comes into contact with the circumferential surface of the through hole 18 of the under-furnace chute 15, causing abnormal wear of the reciprocating rod 7 and the under-furnace chute 15, abnormal noise, etc. This has caused a problem in that this can cause a malfunction.

The purpose of this invention is to solve the above problems, and it is applied as a sealing device between the stoker drive rod and the under-furnace chute for reciprocating the stoker in the incinerator for municipal waste and other garbage. The gland seal applied between the reciprocating rod and the mounting surface absorbs the misalignment and prevents metal-to-metal contact even if the reciprocating rod becomes misaligned due to external force. It is an object of the present invention to provide a sealing device for a garbage incinerator that can prevent the occurrence of abnormal wear, abnormal noise, etc.

[Means for solving problems]

In order to solve the above problems and achieve the above objectives, this invention is constructed as follows. That is, this invention has a gland main body through which a reciprocating rod for driving a stoker of a waste incinerator passes through and has a gland sealing mechanism between the reciprocating rod and the reciprocating rod on one side, and the other side of the gland main body. Regarding a sealing device for a waste incinerator, the sealing device is characterized in that the sealing device is slidably attached to a slide base provided on the wall of an under-furnace chute via a gasket in a pressed state, and more specifically, The present invention relates to a sealing device for a garbage incinerator, characterized in that the sealing device is pressed by a spring.

[Effect]

The sealing device for a waste incinerator according to this invention is constructed as described above and has the following functions. That is, this sealing device for a waste incinerator has a gland main body through which a reciprocating rod passes through and is provided with a gland sealing mechanism between the reciprocating rod and the reciprocating rod on one side, and a slide base on the other side of the gland body. Since the reciprocating rod is slidably mounted in a pressed state through a gasket, even if the reciprocating rod moves up and down other than reciprocating motion due to an external force, the gland main body equipped with the gland sealing mechanism remains in the Since the gasket moves in accordance with the movement of the reciprocating rod and can slide on the slide base, a sealed condition can be maintained. Moreover, if the through hole of the slide base through which the reciprocating rod passes is formed large enough to allow the reciprocating rod to normally move up and down, even when the reciprocating rod moves up and down, the There is no possibility that the reciprocating rod and the slide base will come into contact with each other and cause abnormal wear or abnormal noise to the two.

〔Example〕

Hereinafter, a sealing device for a waste incinerator according to this invention will be explained with reference to the drawings.

FIG. 1 shows an embodiment of a sealing device for a waste incinerator according to this invention. FIG. 2 shows an example in which a sealing device for a waste incinerator according to this invention is installed in a waste incinerator.

In FIG. 1, a sealing device for a waste incinerator according to the invention is indicated generally by the reference numeral 10. This sealing device 10 for a garbage incinerator has a generally disclosed gland sealing mechanism that is assembled into a unit and attached to a reciprocating rod 7, and the reciprocating rod 7 is attached to a through hole 19 of a slide base 5, which is a mounting body.
A gland main body 3 having a gland sealing mechanism is attached to a slide base 5 via a packing 4 in a pressed state by a spring 6. This slide base 5 is attached to the under-furnace chute 1.
It is installed on the wall of the under-furnace chute 15.
It goes without saying that it may be constructed integrally with the main body, or may be provided as a separate body in a fixed state. Furthermore, various types of gland seal mechanisms can be applied, and one example will be described. Regarding this gland seal mechanism, the gland main body 3 is fitted into the reciprocating rod 7, a stuffing box 8 is formed between the cylinder 23 extending from one side of the gland main body 3 and the reciprocating rod 7, and the stuffing box 8 is A packing box 8 is filled with a packing 2, and the packing 2 is pressed by a packing gland 1 provided with a packing pressing part 9. As a mechanism for pressing the packing gland 2 with the packing gland 1, a plurality of bolts 21 are set upright on the gland body 3 (in other words, studs), and the bolts 21 are passed through through holes 27 formed in the packing gland 1. It is tightened with a nut 22.
Moreover, the state in which the gland main body 3 is attached to the slide base 5, which is a mounting body, has the following structure. An annular protrusion 24 is formed on the other side of the gland body 3, and a packing 4 is located on the outer periphery of the annular protrusion 24. This packing 4 is an annular plate and has an annular protrusion 24.
It is formed to have a larger wall thickness. A plurality of bolts 29 are installed upright on the slide base 5 (in other words, studs), and these bolts 29 are inserted into the through holes 2 formed in the gland body 3.
5, the gland main body 3 is attached to the slide base 5 in a pressed state by tightening with a nut 20 via a washer 26 and a spring 6. In this case, the mounting surface of the slide base 5 and the mounting surface of the gland body 3 with which the packing 4 comes into contact are finished in a planar shape. Therefore, the gasket 4 is attached with one side in close contact with the attachment surface of the slide base 5 and the other side in close contact with the attachment surface of the gland body 3. Further, the through hole 25 of the gland body 3 is formed to have a size sufficiently larger than the diameter of the bolt 29 so that the gland body 3 can move relative to the bolt 29 (in other words, the slide base 5). As for the spring 6, a spring having a spring constant sufficient for the frictional resistance between the packing 4 and the mounting surface of the slide base 5 is used.

Since the sealing device of the garbage incinerator according to this invention is configured as described above, even if an external force acts on the reciprocating rod 7 and causes vertical movement, the amount of vertical movement is limited to the amount of vertical movement of the reciprocating rod 7 through the through hole of the gland body 3. If the clearance between the gland body 3 and the bolt 29 is within the range, it is possible to prevent the reciprocating rod 7 and the through hole 19 of the slide base 5 from coming into contact with each other, abnormal wear, and generation of abnormal noise. A seal can be maintained between the two. Moreover,
The reciprocating rod 7 can be automatically aligned while maintaining a sealed state by the action of the spring 6 and the like.

By the way, the sealing device 10 for a garbage incinerator according to this invention has the sealing structure itself as described above, and the sealing device 10 for a garbage incinerator can be used to move a stoker in a garbage incinerator as shown in FIG. This is extremely preferable for application to the movable frame body 17. In this case, the reciprocating rod 7 corresponds to the stoker drive rod 7 of the waste incinerator, and the slide base 5 corresponds to the wall of the under-furnace chute 15 as described above. In this case, the waste incinerator sealing device 10 according to the present invention is applied to the position indicated by reference numeral A in FIG. 2, where the reciprocating rod 7 of the waste incinerator passes through the lower chute 15. In general, a garbage incinerator includes a furnace frame that constitutes the outer wall, an insulation board and fireproof insulation bricks interposed within the furnace frame,
The side wall is made of firebrick which constitutes the inner wall. A stoker for transporting waste is disposed on the hearth surface of the waste incinerator, and the stoker is composed of a drying stoker, a combustion stoker, and a post-combustion stoker. A dust supply device is installed on one side of the waste incinerator, that is, upstream of the drying stoker.
The garbage input from the hopper is sent to the drying stoker by the dust supply device. A flue leading to a waste heat boiler is installed above the waste incinerator. An exhaust gas cooling chamber is formed in the flue, and a water injection nozzle is provided around the flue constituting the exhaust gas cooling chamber. In such a waste incinerator, as the reciprocating rod 7 expands and contracts, that is, reciprocates, by the function of the hydraulic cylinder 16, the wheels 14 of the movable frame 17 run on the rails 13, and the movable frame 17 moves The movable stoker 11 is configured to reciprocate, thereby causing the movable stoker 11 to reciprocate.
In this case, the reciprocating rod 7 is connected to the under-furnace chute 15.
Although the reciprocating rod 7 passes through a through hole 18 formed in the hydraulic cylinder 16, the reciprocating rod 7 may move up and down in addition to reciprocating due to the expansion and contraction movement of the hydraulic cylinder 16. However, regarding the gland seal incorporated to seal between the reciprocating rod 7 and the under-furnace chute 15, the reciprocating rod 7
If the rod moves up and down and the center of the reciprocating rod 7 moves, not only will the sealing area become strained and the sealing performance will deteriorate, but the reciprocating rod 7 will come into contact with the circumferential surface of the through hole 18 of the under-furnace chute 15. That is, the reciprocating rod 7 and the under-furnace chute 15 are in metal contact.
However, by applying the waste incinerator sealing device 10 of this invention, the above problems can be solved. points can be resolved.

[Effect of idea]

The sealing device for a waste incinerator according to this invention is constructed as described above, and has the following effects. That is, this sealing device for a garbage incinerator has a gland main body through which a reciprocating rod for driving a stoker of the garbage incinerator passes through and has a gland sealing mechanism on one side between the reciprocating rod and the gland. Since it is attached to the other side of the main body in a slidable and pressed state via a gasket to a slide base provided on the wall of the under-furnace chute, the reciprocating rod may be moved up and down other than reciprocating due to external force. Even if the gland main body equipped with the gland seal mechanism moves in accordance with the movement of the reciprocating rod, the seal can slide on the slide base, so that the sealing state can be maintained. can be maintained. Moreover, if the through hole of the slide base through which the reciprocating rod passes is formed large enough to allow the reciprocating rod to normally move up and down,
Even if the reciprocating rod moves up and down, no metal-to-metal contact will occur between the reciprocating rod and the slide base, and therefore, there will be no abnormal wear or damage to the reciprocating rod or the slide base. There will be no abnormal noise or the like that will cause a malfunction. Moreover, the structure is extremely simple, it can be easily applied to existing equipment, and even if the packing wears out, it can be easily replaced. It can be easily adjusted according to the degree of wear by simply screwing in the nut.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of a sealing device for a waste incinerator according to this invention, and FIG. FIG. 3 is a schematic view showing that the sealing device can be applied in position A; 1... Packing gland, 2, 4... Packing gland, 3... Grand body, 5... Slide base, 6... Spring, 7... Reciprocating rod, 1
0... Sealing device of garbage incinerator, 15... Under-furnace chute, 18, 19, 25... Through hole.

Claims (1)

[Claims for Utility Model Registration] (1) A gland body having a gland body through which a reciprocating rod for driving a stoker of a garbage incinerator passes through and having a gland sealing mechanism between the reciprocating rod and the gland on one side; A sealing device for a waste incinerator, characterized in that the other side of the main body is slidably attached to a slide base provided on the wall of a lower chute via a gasket in a pressed state. (2) The sealing device for a waste incinerator according to claim 1, wherein the gland body is pressed against the slide base by a spring.