CN214470087U

CN214470087U - High-temperature anti-abrasion isolation door suitable for dust-containing furnace smoke system

Info

Publication number: CN214470087U
Application number: CN202023105986.9U
Authority: CN
Inventors: 丁恒龙; 赵季
Original assignee: Jingjiang Wanhong Machinery Manufacturing Co ltd
Current assignee: Jingjiang Wanhong Machinery Manufacturing Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-10-22
Anticipated expiration: 2030-12-21

Abstract

The utility model discloses an isolated door of high temperature abrasionproof suitable for dusty stove smoke system, including box, screw drive subassembly, flashboard, door frame and disk seat, the top welding of door frame has the disk seat, and the intermediate position department at box top installs the bearing frame, and four group's plane thrust bearings are installed to the inside symmetry of bearing frame, and the internally mounted of bearing frame has the lead screw, the vertical flashboard that is provided with in inside of box is fixed with the screw drive subassembly on the lateral wall on flashboard top, sealing device is all installed to the both sides of the inside bottom of box, and sealing device's inboard packing has the nickel wire packing. The utility model adopts four groups of plane thrust bearings in the bearing seat, can effectively control the stress under the high temperature strain condition, and ensures that the transmission mechanism can flexibly operate under the high temperature thermal stress condition; adopt contact sealing member between flashboard and box to adopt graphite nickel silk packing of nai more than 800 degrees high temperatures as the filler, promoted the anti-deposition effect of isolated door.

Description

High-temperature anti-abrasion isolation door suitable for dust-containing furnace smoke system

Technical Field

The utility model relates to an isolated door technical field specifically is an isolated door of high temperature abrasionproof suitable for dusty stove cigarette system.

Background

In coal-fired power generation or metallurgical field, utilize the coal-fired heat that produces, also can produce high temperature dusty flue gas simultaneously, high temperature flue gas not only can make corresponding smoke door by wearing and tearing, and the overheated ageing, deformation, stifled ash, the card scheduling problem under the high temperature condition still appear easily under the high temperature condition in the conventional smoke door simultaneously, cause the relevant smoke door of high temperature pipeline smoke medium can not normally put into use.

In the related process of boiler industrial production, high-temperature dust-containing furnace smoke is generally required to be extracted for the drying or desiccation process of raw coal, coal slime, sludge and the like with high water content, and the temperature of the furnace smoke is usually as high as 400-800 ℃; these high temperature furnace smoke not only contains a large amount of dust, causes equipment deposition unsmooth easily, causes equipment trouble, and if the pipeline of high temperature furnace smoke reveals the entering low temperature pipeline, still can cause low temperature pipeline equipment overheat aging, arouses the damage of the relevant equipment of pipeline, and the relevant equipment maintenance in-process of pipeline also must utilize the isolated door that sets up on the pipeline to fully keep apart in addition, stops the high temperature flue gas and gets into pipe-line system, otherwise will seriously threaten the safety of maintainer and equipment.

The current domestic mature technology and reliable isolation door product of still lacking the reliable high temperature dusty flue-gas of maturity for there is certain insecurity in the system application of high temperature dusty flue-gas, has restricted the development of the industrial application technique of high temperature dusty flue-gas, needs urgent research and development a safe, reliable, high temperature resistant and the good isolation door of abrasionproof ability.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an isolated door of high temperature abrasionproof suitable for dusty stove cigarette system to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-temperature anti-abrasion isolation door suitable for a dust-containing furnace smoke system comprises a box body, a spiral transmission assembly, a flashboard, a door frame and a valve seat, a valve seat is welded above the door frame, a box body is welded on the top of the valve seat, a positioning sleeve is fixed at the bottom end inside the box body, a bearing seat is installed at the middle position of the top of the box body, four groups of plane thrust bearings are symmetrically installed inside the bearing seat, a screw rod is installed inside the bearing seat, the top end of the screw rod is connected with a hand wheel through a mortise and tenon structure, the bottom end of the screw rod extends into a positioning sleeve in the box body, a flashboard is vertically arranged in the box body, a spiral transmission assembly is fixed on the side wall of the top end of the flashboard, and the screw drive assembly is sleeved on the screw rod, sealing devices are arranged on two sides of the bottom end in the box body, metal nickel wire packing is filled in the inner sides of the sealing devices, and the sealing devices are tightly attached to the side edges of the flashboards.

Preferably, an access door is installed on the side surface of the box body.

Preferably, the inside of door frame is vertical to be provided with the second hole groove, and the inside of disk seat is vertical to be provided with first hole groove, and first hole groove and second hole groove correspond each other, and first hole groove is located the flashboard under, and the width in first hole groove and second hole groove all is greater than the thickness of flashboard.

Preferably, the corner of the upper end in the box body is obliquely welded with an inclined support, the middle position in the box body is horizontally provided with a transverse support, and the inclined support, the transverse support and the gate plate are not in the same plane.

Compared with the prior art, the beneficial effects of the utility model are that: four groups of plane thrust bearings are adopted in the bearing seat, so that the stress under the high-temperature strain condition can be effectively controlled, and the transmission mechanism can flexibly run under the high-temperature thermal stress condition; a contact type sealing element is adopted between the gate plate and the box body, and a graphite nickel wire packing which can resist the high temperature of more than 800 ℃ is adopted as a packing, so that the dust deposition prevention effect of the isolation door is improved; through improving and promoting key parts and structures such as flashboard, door frame, sealing member and drive mechanism for the operating temperature accommodation of isolated door can reach 400 ~ 800 ℃, and has the operating characteristics of preventing deposition, abrasionproof loss, anti-deformation and anti-sticking, makes the security and the reliability of equipment effectively promoted.

Drawings

Fig. 1 is a schematic front view of the isolation door of the present invention;

FIG. 2 is a schematic side sectional view of the present invention;

FIG. 3 is a schematic side view of the door frame and the valve seat of the present invention;

fig. 4 is a schematic structural view of the bearing seat of the present invention;

fig. 5 is a schematic structural view of the sealing device of the present invention;

FIG. 6 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 7 is an enlarged schematic view of the structure at B in fig. 2 according to the present invention.

In the figure: 1. a box body; 2. a screw drive assembly; 3. a positioning sleeve; 4. a shutter plate; 5. a door frame; 6. a hand wheel; 7. a bearing seat; 8. obliquely supporting; 9. transversely supporting; 10. a sealing device; 11. a valve seat; 12. a screw rod; 13. an access door; 14. a first hole groove; 15. a second hole groove; 16. a planar thrust bearing; 17. and a metal nickel wire packing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides an embodiment: a high-temperature anti-abrasion isolation door suitable for a dust-containing furnace smoke system comprises a box body 1, a spiral transmission assembly 2, a flashboard 4, a door frame 5 and a valve seat 11, wherein the valve seat 11 is welded above the door frame 5, the box body 1 is welded at the top of the valve seat 11, and an access door 13 is installed on the side surface of the box body 1 and used for overhauling equipment and components in the box body 1 after the box body is opened in a fault state;

an inclined support 8 is welded at the corner of the upper end in the box body 1 in an inclined mode, a transverse support 9 is horizontally arranged in the middle of the interior of the box body 1, the overall strength and stability of the box body 1 are improved, and the inclined support 8, the transverse support 9 and the flashboard 4 are not in the same plane;

a second hole groove 15 is vertically formed in the door frame 5, a first hole groove 14 is vertically formed in the valve seat 11, the first hole groove 14 corresponds to the second hole groove 15, the first hole groove 14 is located right below the gate plate 4, the widths of the first hole groove 14 and the second hole groove 15 are both larger than the thickness of the gate plate 4, the first hole groove 14 and the second hole groove 15 are used for accommodating the gate plate 4, meanwhile, the gate plate 4 is limited, and the side edge of the gate plate 4 is sealed;

a positioning sleeve 3 is fixed at the bottom end inside the box body 1, the axial direction and the end direction of the screw rod 12 are positioned, a bearing seat 7 is installed at the middle position of the top of the box body 1, the screw rod 12 is positioned and fixed, four groups of plane thrust bearings 16 are symmetrically installed inside the bearing seat 7, and the box body can adapt to thermal stress under the condition of high-temperature smoke;

a screw rod 12 is installed inside the bearing seat 7, the top end of the screw rod 12 is connected with a hand wheel 6 through a mortise and tenon structure and can be driven by a pneumatic actuator or an electric actuator instead, the bottom end of the screw rod 12 extends into a positioning sleeve 3 inside the box body 1, a flashboard 4 is vertically arranged inside the box body 1, a spiral transmission assembly 2 is fixed on the side wall of the top end of the flashboard 4, the spiral transmission assembly 2 is sleeved on the screw rod 12, internal threads meshed with each other are formed inside the spiral transmission assembly 2 and used for transmitting torque on the screw rod 12 to the flashboard 4, and lifting of the flashboard 4 is achieved;

sealing device 10 is all installed to the both sides of the inside bottom of box 1, and sealing device 10 hugs closely the side of flashboard 4, prevents that the dust in the flue gas from getting into inside the box 1, and sealing device 10's inboard packing has metal nickel wire packing 17, has good high temperature resistance.

The working principle is as follows: when the device is used, the hand wheel 6 is rotated to drive the screw rod 12 to rotate, the torque generated by the rotation of the screw rod 12 is transmitted to the gate plate 4 through the screw transmission assembly 2, the gate plate 4 is driven to move up and down between the box body 1 and the door frame 5, the opening and closing of the isolation door are realized, and the passing and isolation effect of the gate plate 4 on a medium in a pipeline is realized through the opening and closing; because the through-flow medium is high-temperature dust-containing flue gas, a contact type sealing device 10 is arranged between the gate plate 4 and the box body 1, dust in the flue gas is prevented from entering the box body 1, sealing filler in the contact type sealing device 10 is sealed by a high-temperature-resistant metal nickel wire packing 17, the normal work can be realized in a high-temperature environment of more than 800 ℃, the sealing effect is ensured, the positioning and fixing of the screw rod 12 are realized by the bearing seat 7 and the positioning sleeve 3, four groups of plane thrust bearings 16 are arranged in the bearing seat 7, the working characteristics of large thermal stress under the condition of high-temperature flue gas are adapted, and the positioning and normal rotation of the screw rod 12 are ensured.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an isolated door of high temperature abrasionproof suitable for dusty stove cigarette system, includes box (1), helical drive subassembly (2), flashboard (4), door frame (5) and disk seat (11), its characterized in that: the upper portion of the door frame (5) is welded with a valve seat (11), the top portion of the valve seat (11) is welded with a box body (1), a bottom fixing positioning sleeve (3) in the box body (1) is fixed at the inner portion of the box body, a bearing seat (7) is installed at the middle position of the top portion of the box body (1), four groups of plane thrust bearings (16) are symmetrically installed in the bearing seat (7), a lead screw (12) is installed in the bearing seat (7), a hand wheel (6) is connected to the top end of the lead screw (12) through a mortise and tenon structure, the bottom end of the lead screw (12) extends into the positioning sleeve (3) in the box body (1), a flashboard (4) is vertically arranged in the box body (1), a spiral transmission assembly (2) is fixed on the side wall of the top end of the flashboard (4), the spiral transmission assembly (2) is sleeved on the lead screw (12), sealing devices (10) are installed on two sides of the inner bottom end of the box body (1), the inner side of the sealing device (10) is filled with a metal nickel wire packing (17), and the sealing device (10) is tightly attached to the side edge of the flashboard (4).

2. The high temperature wear resistant isolation door for use in a dusty furnace fume system of claim 1, wherein: an access door (13) is installed on the side surface of the box body (1).

3. The high temperature wear resistant isolation door for use in a dusty furnace fume system of claim 1, wherein: the inside of door frame (5) is vertical to be provided with second hole groove (15), and the inside of disk seat (11) is vertical to be provided with first hole groove (14), and first hole groove (14) and second hole groove (15) correspond each other, and first hole groove (14) are located flashboard (4) under, and the width in first hole groove (14) and second hole groove (15) all is greater than the thickness of flashboard (4).

4. The high temperature wear resistant isolation door for use in a dusty furnace fume system of claim 1, wherein: the corner of the inside upper end of box (1) is the slope welded and is had bearing diagonal (8), and box (1) inside intermediate position department horizontal installation has horizontal brace (9), and bearing diagonal (8) and horizontal brace (9) and flashboard (4) are not in the coplanar.