CN202807883U

CN202807883U - Dilute-phase pneumatic transmission system for fly ash materials

Info

Publication number: CN202807883U
Application number: CN 201220340666
Authority: CN
Inventors: 陈玉林; 徐兵; 李义新; 解彬; 刘海; 毛静; 冯立国
Original assignee: ANHUI WEIDA ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Current assignee: ANHUI WEIDA ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
Priority date: 2012-07-13
Filing date: 2012-07-13
Publication date: 2013-03-20
Anticipated expiration: 2022-07-13

Abstract

The utility model discloses a dilute-phase pneumatic transmission system for fly ash materials. The dilute-phase pneumatic transmission system comprises a power source, a gas path pipeline, a dust remover ash bucket, a nozzle type feeder, an ash conveying pipeline and a wear-resisting elbow, wherein an air source buffering storage tank can be added for the power source, a reducing valve, a pneumatic ball valve and a bypass pipeline are installed on the gas path pipeline, and a pneumatic ash discharging bell valve, a dust transition cavity and a pneumatic ash discharging ball valve are sequentially installed at an ash discharging point of the dust remover ash bucket from top to bottom. The dilute-phase pneumatic transmission system has the advantages of being a few in device operation component, low in failure rate, convenient to maintain, long in conveying distance, high in conveying capacity and capable of solving the problems of the high cost, the air leakage and the ash material leakage and effectively prolonging the service life of pipelines simultaneously.

Description

The dilute phase pneumatic conveying system of dedusting ash material

Technical field

The utility model relates to dedusting ash material delivery system, especially is applied to the dilute phase pneumatic conveying system of the dedusting ash material of dust exhaustor.

Background technology

At present the used dust exhaustor of environmental protection industry (epi) is collected the dust that gets off and mainly carried: machinery is carried and strength is carried, machinery carry cost low but be not suitable for that long distance is carried and course of conveying in easy generation reentrainment of dust; Strength carry have on the one hand flexible arrangement, environmentally safe, occupation of land less, the machinery such as easy to maintenance carries incomparable advantage; Be on the other hand strength carry can satisfy that operational throughput is large, the requirements such as distance and work under bad environment, so strength is carried and is widely used in just more and more in the handling process of dedusting all trades and professions.Strength is carried and is divided into concentrated phase and dilute phase conveying at present, and concentrated phase is carried: the shortcomings such as cost is high, fault rate is higher, maintenance is inconvenient.And the dilute phase pneumatic conveying chief component is propulsion source, valve terminal and ash conveying pipe, and power generally adopts air or nitrogen, and it generally is to be provided or compressed gas source by Roots blower that power provides, and conveying is to utilize to be lower than 1kg/cm ²Gaseous tension, promotes or spur material with quite high speed and make it pass through the whole piece delivery duct, so this mode of movement is referred to as the low-voltage high speed system, it has very high grey gas ratio.Material is suspended state in pipeline when dilute phase pneumatic conveying, fed distance reaches hundreds of rice, the characteristics of carrying are that operational throughput is large, distance is long, flow velocity is lower, stable, it is less for the impact of material, but there is following defective in existing these dilute phase pneumatic conveying systems: the one, and system sealing is not tight, system's gas leakage, cause defeated grey bleed pressure unstable, can't guarantee the stability of carrying; The 2nd, the leakage rate of used valve terminal own is large, and the valve interlocked control is unreasonable, causes defeated grey process easily to be stopped up; The 3rd, the easy to wear or corrosion of ash conveying pipe.

Summary of the invention

The utility model purpose provides the dilute phase pneumatic conveying system of dedusting ash material in order to address the above problem, and avoids source of the gas to relate to leakage, and stopping up appears in defeated grey process, and the wearing and tearing or the corrosion condition that reduce ash conveying pipe.

In order to achieve the above object, the utility model comprises: propulsion source, gas path pipe, dust collector ash hopper, nozzle-type loader, ash conveying pipe and wear-resistant bend is characterized in that: reducing valve and pneumatic ball valve are installed on the described gas path pipe; Unloading under the ash point of described dust collector ash hopper is equipped with pneumatic ash discharge clock valve, dust transitional storehouse, pneumatic Unloading ball valve successively from top to bottom.

The bypass duct of air feed when gas path pipe of the present utility model side also has additional one zero, and wear-resisting, the resistant to corrosion aluminum silicate ceramic paster Lining treatment of the inner use of ash conveying pipe and wear-resistant bend, propulsion source has additional source of the gas buffering storage tank, and source of the gas buffering storage tank can be provided with 2 covers.

The dilute phase pneumatic conveying that the utility model adopts can be saved the input of system greatly, used equipment operation parts are less, failure rate is low, easy to maintenance, long distance is carried, operational throughput is large, the cost that had both solved present concentrated phase conveying system is high, fault is higher, safeguard the shortcomings such as inconvenience, the ash discharging system line seal that solves again existing dilute phase pneumatic conveying is not tight, gas leakage, the defeated unsettled defective of grey bleed pressure, and by pneumatic Unloading ball valve and the successively in turn unlatching of pneumatic ash discharge clock valve sequence from low to uper part, the dust transitional storehouse quantitative transition dust of forming a connecting link efficiently solves that dust stops up and the leakage problem of valve own in the ash conveying pipe, simultaneously in different dust medium situations, use wear-resisting to ash conveying pipe inside, withstanding corrosion aluminum silicate ceramic paster Lining treatment, avoid pipeline affected by ambient condition and be corroded, thereby affected service life.

Description of drawings

Fig. 1 is the utility model constructional drawing.

Fig. 2 is the utility model plan structure figure.

The specific embodiment

As shown in Figure 1 and Figure 2, the utility model comprises: propulsion source, gas path pipe 2, valve terminal, nozzle-type loader 5, ash conveying pipe 3 and wear-resistant bend 4.

Propulsion source is the power that strength is carried, and generally adopts air or nitrogen, and power to provide generally be to be provided by Roots blower or compressed gas source, bleed pressure normally is 2kg/cm ², and can increase source of the gas buffering storage tank 1 according to the stable situation of bleed pressure, source of the gas buffering storage tank 1 common 2 covers are for good, one open one for subsequent use.

The air extractor duct of source of the gas buffering storage tank 1 is connected with a gas path pipe 2, and gas path pipe 2 is the assemblies that connect source of the gas and dust point, and gas path pipe 2 adopts solid drawn pipe to make, for guaranteeing that the gas path pipe internal pressure is 2kg/cm ², and source of the gas can stop to flow at any time in the pipeline, and pneumatic ball valve 10 and reducing valve 11 are installed on gas path pipe 2 in order, to guarantee that overpressure is balanced and suddenly to stop control.When overhauling gas path pipe 2 rear method, apparatus, can cut off source of the gas fully, easy access, exchange device more are separately installed with manual ball valve 12 at pneumatic ball valve 10 and reducing valve 11 both sides.Can guarantee to carry smoothly when the maintenance for pneumatic ball valve 10 and reducing valve 11 again, the bypass duct 13 of air feed is equipped with manual ball valve and pneumatic ball valve in the time of must increasing by one zero in addition on gas path pipe 2 on the bypass duct 13.

Gas path pipe 2 rears are connected with ash conveying pipe 3 and wear-resistant bend 4, and ash conveying pipe 3 is assemblies that dust is outwards carried, and usually are delivered to the grey storehouse of storage, and in different dust medium situations, ash conveying pipe 3 is generally determined the selection of pipeline according to the abradability of dust; Ash handing pipeline is used different processing, avoided pipeline affected by ambient condition and be corroded, thereby affect service life, generally adopt common solid drawn pipe without abrasion dust, if dust hardness is large, containing S, Cl etc. can cause in the dust medium situation of corrosion with water, ash conveying pipe 3 and wear-resisting, the withstanding corrosion aluminum silicate ceramic paster Lining treatment of wear-resistant bend 4 inner uses, the size of caliber is determined according to the size of defeated ash amount, circuit design should reduce elbow quantity, and the elbow radius is generally greater than 10 times of calibers.

Be connected with nozzle-type loader 5 at ash conveying pipe 3, nozzle-type loader 5 is continuous, the homogeneities that guarantee blanking, prevent the inhomogeneous blocking pipe of blanking, nozzle-type loader 5 tops connect dust collector ash hopper 6, in order to prevent the dust leakage problem, between nozzle-type loader 5 and dust collector ash hopper 6, increase valve terminal and dust transitional storehouse 8, valve terminal is made of pneumatic ash discharge clock valve 7 and pneumatic Unloading ball valve 9, during installation, unloading under the ash point of dust collector ash hopper 6 pneumatic ash discharge clock valve 7, dust transitional storehouse 8, pneumatic Unloading ball valve 9 are installed from top to bottom successively.Pneumatic ash discharge clock valve 7, pneumatic Unloading ball valve 9 play and unload the leakage problem that ash and two valves interlockings (being one open-one close) have solved valve itself, and the action of valve was successively to open pneumatic Unloading ball valve by sequence from low to uper part when dust exhaustor unloaded ash.Dust transitional storehouse 8 is mounted between two valves, plays the grey leak tightness that ash can increase system of depositing of also accomplishing simultaneously in the storehouse of transition storage.

The utility model workflow:

The grey storehouse of dust collector ash hopper → pneumatic ash discharge clock valve → dust transitional storehouse → Pneumatic dump valve → nozzle-type loader → ash conveying pipe → store up.Carry source of the gas to be provided by roots blower or compressed gas source, delivery speed is about 14～20m/s in the ash conveying pipe, during Pneumatic ash conveying, open first propulsion source gas path pipe ball valve and supply gas, successively open pneumatic ash discharge clock valve, pneumatic Unloading ball valve from bottom to top in order again, when stopping defeated ash, close first pneumatic Unloading ball valve, close pneumatic ash discharge clock valve again, close at last propulsion source gas path pipe ball valve and stop to supply gas, next step just began action after every operation all required valve switch to put in place.

Claims

1. the dilute phase pneumatic conveying system of dedusting ash material, comprise: propulsion source, gas path pipe (2), dust collector ash hopper (6), nozzle-type loader (5), ash conveying pipe (3) and wear-resistant bend (4) is characterized in that: reducing valve (11) and pneumatic ball valve (10) are installed on the described gas path pipe (2); The ash point that unloads of described dust collector ash hopper (6) is equipped with pneumatic ash discharge clock valve (7), dust transitional storehouse (8), pneumatic Unloading ball valve (9) successively from top to bottom.

2. the dilute phase pneumatic conveying system of dedusting ash material according to claim 1 is characterized in that: the bypass duct (13) of air feed when described gas path pipe (2) side also has additional zero.

3. the dilute phase pneumatic conveying system of dedusting ash material according to claim 1 is characterized in that: described propulsion source has additional source of the gas buffering storage tank (1).

4. the dilute phase pneumatic conveying system of dedusting ash material according to claim 1 is characterized in that: wear-resisting, the resistant to corrosion aluminum silicate ceramic paster Lining treatment of the inner use of described ash conveying pipe (3) and wear-resistant bend (4).

5. the dilute phase pneumatic conveying system of dedusting ash material according to claim 3 is characterized in that: described source of the gas buffering storage tank (1) is provided with 2 covers.