CN105134965A

CN105134965A - Sealing device of slide plate gate

Info

Publication number: CN105134965A
Application number: CN201510348553.0A
Authority: CN
Inventors: 丁毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-24
Filing date: 2015-06-24
Publication date: 2015-12-09

Abstract

A sealing device of a slide plate gate comprises a high-pressure air source (1) and a guide pipe (2). The sealing device is characterized in that the outline of the guide pipe is similar to the shape of the inner wall of an air inlet (4) of the slide plate gate; the guide pipe is welded to the inner wall of the tail end of the air inlet; a groove (5) is annularly formed in the guide pipe, and an opening of the groove faces a plug plate; a rubber pipe (6) with the closed head and tail is arranged in the guide pipe; an air nozzle (7) on the rubber pipe penetrates out of the wall of the guide pipe and is communicated with the high-pressure air source; the pressure of the high-pressure air source is larger than that of the air inlet; and the rubber pipe can be attached to the plug plate (3) after being inflated with air. The sealing device has the beneficial effects that the rubber pipe is elastic, no clearance exists between the rubber pipe and the plug plate, and reliable sealing can be achieved; a cavity of the rubber pipe is sealed; the high-pressure air source is hardly consumed; and no friction happens between the plug plate and the rubber pipe when the plug plate moves, the sealing performance of the slide plate gate can be kept, and the service life of the slide plate gate is prolonged.

Description

A kind of seal arrangement of insertion plate door

Technical field

The present invention relates to a kind of seal arrangement of insertion plate door, described insertion plate door is for stopping the gas of pipeline, and described seal arrangement is arranged on the suction port of insertion plate door, and it comprises seal element, selector valve and high-pressure air source.

Background technique

Existing large-sized boiler is generally provided with smoke processing system, and the flue gas of chimney is introduced into smoke processing system, and the flue gas after purification returns chimney again and discharges; When smoke processing system needs to safeguard and quits work, the gas-entered passageway of smoke processing system and exhaust passage are closed by insertion plate door, require that smokeless leaks when insertion plate door is closed; Because the contact of the plate of insertion plate door and the suction port of insertion plate door is rigid contact, there is gap between it can not seal, insertion plate door adopts double layer construction for this reason, one blowing mouth is set in the interlayer of insertion plate door, introducing pressurized gas through blowing mouth enters in the interlayer of insertion plate door, and pressurized gas form an air curtain to stop flue gas at the edge of insertion plate door.Its deficiency is, the amount of the pressurized gas consumed is large, there is friction in addition between plate and suction port, and the gap after using a period of time between it can increase, not only the consumption of pressurized gas increases, and the pressure drop in insertion plate door can be made to have influence on sealing effect.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of seal arrangement of insertion plate door, and sealing device reliably can realize sealing, and it is few to consume high-pressure air when being positioned at closed position, can energy saving.

The seal arrangement of this insertion plate door, comprise high-pressure air source 1, guide pipe 2, it is characterized in that, the profile of described guide pipe is similar to the inner wall shape of the suction port 4 of insertion plate door, guide pipe is welded on the inwall of suction port tail end, guide pipe is equipped with cell body 5, the opening of cell body is towards plate, the rubber pipe 6 that head and the tail are closed is provided with in guide pipe, on rubber pipe, air nozzle 7 passes from the wall of guide pipe, air nozzle is communicated with high-pressure air source, and the pressure of high-pressure air source is greater than the pressure in suction port, is affixed rubber pipe energy and plate 3 after rubber pipe inflation.

The feature of this seal arrangement is, namely, when plate moves to suction port position upon closing, fill with high-pressure air to rubber pipe, rubber pipe is exposed from the notch of guide pipe and is affixed with plate, because rubber pipe has between elasticity itself and plate seamless, can reliable sealing; The cavity of rubber pipe is closed, very little to the tolerance of its inflation, consumes high-pressure air source hardly; Exit by air nozzle when plate moves, allow rubber pipe be contracted in guide pipe, without friction between plate and rubber pipe, rubber pipe can not produce wearing and tearing, can keep the sealability of insertion plate door, improves the working life of insertion plate door.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 be the A-A of Fig. 1 to sectional view, save selector valve and high-pressure air source in this figure.

Fig. 3 is that the B-B of Fig. 1 is to sectional view.

Fig. 4 is the C portion enlarged view of Fig. 2.

In accompanying drawing, mark represents respectively: edge, 95-cover plate, 96-guide rail, 97-dividing plate, 98-gusset under portion, 94-on the right of 1-high-pressure air source, 11-selector valve, 2-guide pipe, 3-plate, 4-suction port, 5-cell body, 6-rubber pipe, 7-air nozzle, 91-left lateral, the upper edge of 92-, 93-.

Embodiment

Existing accompanying drawings the specific embodiment of the present invention.

Described plate is arranged in doorframe, doorframe is that rectangle is made up of left lateral 91, upper edge 92, the right portion 93, lower edge 94, the right-hand part of doorframe is closed with cover plate 95, the right-hand part of doorframe can hold plate, be provided with the suction port 4 be connected with external pipe in the left side of doorframe, when plate moves in doorframe, can suction port be covered.

Guide rail 96 is respectively equipped with along its length in the upper edge of doorframe and lower edge, guide rail parallels with plate, guide pipe, guide rail is the mobile guide of plate, guide pipe is provided with cell body 5, the opening of cell body towards plate, in guide pipe, hoop is provided with rubber pipe 6, on rubber pipe, air nozzle 7 passes from the wall of guide pipe and doorframe, and air nozzle is fixed on doorframe, is affixed rubber pipe energy and plate after rubber pipe inflation.

The channel cross-sectional shape of described suction port is circular or rectangle, the channel cross-section of rectangle can be saved material and can increase the Throughput of suction port compared with the channel cross-section of circle, when adopting the channel cross-section structure of rectangle, described suction port surrounded by upper edge 92 and lower edge 94 and two pieces of dividing plates 97, the corner of described guide pipe is arc transition, and between the arc-shaped transitional surface and the corner of suction port of guide pipe, filling is welded with gusset 98.

Selector valve 11 is connected with between air nozzle, high-pressure air source, selector valve has to be made air nozzle communicate with air (venting) or air nozzle is communicated with high-pressure air source the conversion function of (inflation), plate is when mobile, selector valve is gone to deflated position exit to rubber pipe, rubber pipe is contracted in guide pipe, without friction between rubber pipe and plate; When plate covers suction port, selector valve is gone to aerating position to fill rubber pipe and make it expand with high-pressure air (air pressure is greater than pressure in institute's connecting tube), rubber pipe exposes from the notch of guide pipe, be close to plate, the microcosmic that the resiliently deformable that rubber pipe produces can be filled up between plate on surface of contact is uneven, realizes the reliable sealing of insertion plate door.

Described rubber pipe is made up of ethylene propylene diene rubber or silicone rubber material, and it has good resistance to high temperature and elasticity.

Claims

1. the seal arrangement of an insertion plate door, comprise high-pressure air source (1), guide pipe (2), it is characterized in that, the profile of described guide pipe is similar to the inner wall shape of the suction port (4) of insertion plate door, guide pipe is welded on the inwall of suction port tail end, guide pipe is equipped with cell body (5), the opening of cell body is towards plate, the rubber pipe (6) that head and the tail are closed is provided with in guide pipe, on rubber pipe, air nozzle (7) passes from the wall of guide pipe, air nozzle is communicated with high-pressure air source, the pressure of high-pressure air source is greater than the pressure in suction port, rubber pipe energy and plate (3) after rubber pipe inflation are affixed.

2. the seal arrangement of insertion plate door according to claim 1, is characterized in that, is connected to selector valve (11) between air nozzle and high-pressure air source, and selector valve has the conversion function making air nozzle communicate with air or air nozzle is communicated with high-pressure air source.