CN2818950Y

CN2818950Y - Sloping knife-edge double-layer unloading valve

Info

Publication number: CN2818950Y
Application number: CN 200520051481
Authority: CN
Inventors: 张新明
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-22
Filing date: 2005-07-22
Publication date: 2006-09-20
Anticipated expiration: 2015-07-22

Abstract

The utility model relates to an end device of a dust removing system for environmental protection, namely, a double-layer dust unloading valve which is used for metallurgy industry, building material industry, heat-engine plants, feed processing industry, etc. The sloping knife-edge type double-layer dust unloading valve has the structure that an upper valve and a lower valve with the same structure are respectively arranged on box body top boards of an upper box body and a lower box body, and a material bin is arranged between the upper box body and the lower box body; the upper valve and the lower valve are driven through a speed reducer and a mechanical driving mechanism to independently open and close, valve seats of the upper valve and the lower valve present in a knife-edge shape, and the valve seats and a plane valve board form a blade connection. Compared with the similar device, the sloping knife-edge type double-layer dust unloading valve of the utility model prolongs service life of the device by more than 5 times, reduces enterprise production cost, and greatly reduces economic loss because of shutdown maintenance; the utility model increases serviceability rate for device use, reduces labor intensity of workers for maintaining device, and saves energy and labor; the utility model protects environment, purifies air and greatly increases work efficiency of the dust removing system.

Description

Inclined-plane knife edge type Double-deck cinder discharge valve

Technical field

The utility model relates to environmental protection dust pelletizing system terminal equipment, promptly is used for the Double-deck cinder discharge valve of industries such as metallurgy, building materials, thermal power plant, feed processing.

Background technique

Industries such as China's metallurgy, building materials, thermal power plant, feed processing in process of production because links such as raw material handling, conveying, processing produce a large amount of flue gases and dust, if give free rein to discharging, will serious environment pollution.The Double-deck cinder discharge valve of one of environmental protection dusting apparatus is mainly used in the deduster terminal lime-ash that reclaims is concentrated discharging at present, realizes turning bane into boon.

Original Double-deck cinder discharge valve key position valve seat valve, its structure adopts cone to cooperate (being commonly called as the mushroom head) if it is reasonable that this structure is used for the stopping effect of liquid, Purge gas merely, uses below the deduster of high negative pressure effect bad only.Slag particle and dust because dust collector ash hopper drops downwards brokenly, when valve is about to close in a flash, thereby drop slag particle on valve and dust are stuck and cause blow-by.Negative pressure reaches 8000Pa-20000Pa in the general medium-and-large-sized dust pelletizing system, if unloading valve blow-by, back suction wind will appear, its result produces the negative effect of two aspects: 1. manufacturing operation district dust-contained airflow was taken out to be walked when the reduction dust removing effects was serious, flue dust fills the air, both influenced workers ' health, befouling environment is wasted a large amount of energy simultaneously again; 2. cause the equipment premature wear.To the Field Research analysis, a general mushroom unloading valve has only 3-5 month working life by for many years, most of damage be not normally unload the ash wearing and tearing but slag inclusion gas leakage causes the back suction windmill to decrease.

Summary of the invention

The purpose of this utility model is to provide a kind of long-life Double-deck cinder discharge valve.

The purpose of this utility model is achieved through the following channels: inclined-plane knife edge type Double-deck cinder discharge valve, be separately installed with the identical last valve of structure on the roof box of upper box, lower box and reach valve down, be feed bin between upper box and the lower box, go up valve and down valve all drive independent the keying by speed reducer and mechanical transmission mechanism, last valve reaches down, and the valve seat of valve is an edge of a knife shape, it is line with the plane valve plate and contacts, and the surface of contact of valve seat and plane valve plate and roof box are 0 °～30 ° angle.The surface of contact of valve seat and plane valve plate and roof box are 15 ° angle.Access door all is installed on the sidewall of upper box and lower box.The top of upper box is equipped with manually gate valve.Described speed reducer is a cycloidal planetary gear speed reducer.Described speed reducer is installed on the support that is positioned at lower box one side.

The utility model inclined-plane knife edge type Double-deck cinder discharge valve is compared with same category of device, and its advantage is as follows:

1. changed the motor reducer mounting point, intercepted the destruction of high temperature motor.Original same category of device hangs motor reducer and is installed on the valve body, because metal heat-conducting, high temperature conducts to motor in the feed bin, causes behind the motor overheating insulation to descend and often burns out.The utility model is improved this, and motor reducer is separated from valve body, designs a rack platform motor reducer is installed.Because the heat transfer area area reduces 80%, more than thermal source 50mm, has protected motor reducer; 2. prolong life of equipment more than five times, reduced enterprise's cost of production, greatly reduce the economic loss that causes because of shutdown maintenance; 3. raising equipment uses availability ratio, reduces workman's maintenance of equipment labor intensity, saves a large amount of energy and labour; 4. the protection environment purifies air, and the dust pelletizing system working efficiency is greatly improved.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the utility model structural representation;

Fig. 2 is a side direction structural representation of the present utility model;

Fig. 3 is last valve 8 structural representations in the utility model.

Embodiment

As Fig. 1, shown in Figure 2, the utility model inclined-plane knife edge type Double-deck cinder discharge valve, its upper box 18, be separately installed with the identical last valve of structure 8 on the roof box 14 of lower box 17 and reach valve 19 down, be feed bin 16 between upper box 18 and the lower box 17, last valve 8 reaches down, and valve 19 all drives independent folding by speed reducer 5 and mechanical transmission mechanism 7, described speed reducer 5 is a cycloidal planetary gear speed reducer, this kind deceleration function improves the work balance of machine, and has high pulling torque, described mechanical transmission mechanism 7 is a prior art, it is by upper rail 3, lower rail 1, weight linear meter 6, counter weight 4 compositions such as grade are at the switching motion of finishing valve 8 and following valve 19 under the driving of speed reducer 5 by a series of sequences of mechanical transmission mechanism 7.For easy to maintenance, on the sidewall of upper box 18 and lower box 17, access door 15 is installed all.The top of upper box 18 is equipped with manually gate valve 12.For the high temperature that reduces tank surface to the speed reducer influence in 5 life-spans, speed reducer (5) is installed on the support 2 that is positioned at lower box 18 1 sides.

As shown in Figure 3, last valve 8 reaches down, and the valve seat 10 of valve 19 is an edge of a knife shape, valve seat 10 is fixed on the roof box 14 by valve seat suspension hook 13 and sealing gasket 11, it is line with plane valve plate 9 and contacts, in order to reach the optimal seal effect, the surface of contact and the roof box 14 of valve seat 10 and plane valve plate 9 are 15 ° angle.

Working procedure of the present utility model is as follows: top ash bucket discharges lime-ash downwards, and the last valve of inclined-plane knife edge type Double-deck cinder discharge valve 8 is opened, and lime-ash falls in the centre, this at present valve 19 be in closed condition; Last valve 8 was opened after 3.5 seconds, closed and closed valve 8, opened down valve 19 again, and lime-ash in the feed bin 16 are emitted, and so circulation reaches not only dense block gas but also unloads grey purpose smoothly.

Claims

1. inclined-plane knife edge type Double-deck cinder discharge valve, upper box (18), be separately installed with the identical last valve (8) of structure on the roof box (14) of lower box (17) and reach valve (19) down, be feed bin (16) between upper box (18) and the lower box (17), last valve (8) reaches down, and valve (19) all drives independent the keying by speed reducer (5) and mechanical transmission mechanism (7), it is characterized in that: the valve seat (10) of valve (19) was an edge of a knife shape under upward valve (8) reached, it is line with plane valve plate (9) and contacts, and the surface of contact and the roof box (14) of valve seat (10) and plane valve plate (9) are 0 °～30 ° angle.

2. inclined-plane as claimed in claim 1 knife edge type Double-deck cinder discharge valve is characterized in that: the surface of contact and the roof box (14) of valve seat (10) and plane valve plate (9) are 15 ° angle.

3. inclined-plane as claimed in claim 1 knife edge type Double-deck cinder discharge valve is characterized in that: on the sidewall of upper box (18) and lower box (17) access door (15) is installed all.

4. as claim 1 or 3 described inclined-plane knife edge type Double-deck cinder discharge valves, it is characterized in that: the top of upper box (18) is equipped with manually gate valve (12).

5. inclined-plane as claimed in claim 1 knife edge type Double-deck cinder discharge valve is characterized in that: described speed reducer (5) is a cycloidal planetary gear speed reducer.

6. as claim 1 or 5 described inclined-plane knife edge type Double-deck cinder discharge valves, it is characterized in that: described speed reducer (5) is installed on the support (2) that is positioned at lower box (18) one sides.