CN205913916U - A venturi jetting pipe for dust remover - Google Patents

Abstract

The utility model discloses a venturi jetting pipe for dust remover, including the anemostat, venturi nozzle and strain a section of thick bamboo, be equipped with the venthole on the anemostat, the venturi nozzle upper end is fixed to be set up on the venthole, and venturi nozzle's under shed is located and is strained an opening top, venturi nozzle includes the casing, efflux pipe and strengthening rib, the casing is the cavity cylinder, and the opening part becomes outer expand tubaeform about the casing, and casing central authorities are equipped with the efflux pipe, and efflux outside of tubes week is fixed through a plurality of strengthening ribs and casing outer wall, a plurality of drainage air flues are separated into with the efflux pipe with shell space to the strengthening rib.

Description

A kind of venturi injection tube for cleaner unit

Technical field

This utility model is related to the technical field of cleaner design, more particularly, to a kind of venturi spray for cleaner unit Blowpipe.

Background technology

In technical field of industrial dust removal, generally using filtration dust catcher, the dust granules thing of in the air is carried out quickly Physical separation, this filtration dust catcher, generally include housing and blowing device, in housing, be provided with filter, blowing device bag Include injection tube, pulse valve and air accumulator, injection tube at filter port, when cleaner unit work a period of time after, filter On can adsorb more dust granules thing impact filter efficiency, now, pulse valve is opened, and in air accumulator, compressed gas are fast from injection tube Speed enters in filter, and absorption is removed in the dust granules thing of filter surfaces.

At present, common industrial filter formula cleaner unit includes sack cleaner and the big classification of filter drum type precipitator two.Pocket type Cleaner unit is generally wrapped up in by flexible materials such as treated non-woven fabrics and is attached on Os Draconis, and filter bag surfacing is smooth, in order to ensure Certain filtration tolerance, this kind of sack cleaner is typically more elongated, increases the filter table area of filter with this.For this The more elongated structure of sack cleaner, needs high speed, the blast pass of high pressure, so that air-flow can arrive at pocket type from nozzle Cleaner unit bottom is it is ensured that preferable dust removing effects.

And the filter material of filter drum type precipitator is generally harder using quality, the material with necessarily moulding ability is made, filter material Generally it is bent into continuous dentation to be fixed on cartridge type Os Draconis.Because the filter table area of cartridge type filter is larger, therefore, phase For sack cleaner, in the case of identical filtration tolerance, the shape typically more tubbiness of cartridge type filter.According to normal The pulse dust cleaning technology of rule, at a high speed, under high pressure draught effect, easily causes the dentation filtering material gross distortion of filter cylinder, this Plant the peeling effect that deformation can have a strong impact on dust, long repetitive distortion also can make cartridge filter that endurance failure occurs ahead of time.

Except filter cylinder being caused damaged using conventional strength injection, the filter tube of the structure tubbiness on the other hand acting on The intrinsic pressure seriously imbalance because of diffusion pressure cause that dynamic and static pressures in filter tube length range are seriously uneven, this phenomenon may lead to The generation of following unfavorable condition:

1) the inadequate regional dust cleaning of active force is not good, easily causes the granular layer adsorbing and being piled up in teeth groove to be difficult to clearly Reason, causes filtration resistance persistently to rise and causes filtration tube failure；

The excessive region of active force is easily caused tooth excessive deformation, and this is on the one hand larger may to lead to granular layer in back draught Under effect, because teeth groove deforms, envelope granular layer causes cleaning difficult；On the other hand the tooth top of teeth groove and the mistake of tooth root are caused Large deformation and cause fatigue rupture that improper damage occurs, have a strong impact on serviceability, life-span, efficiency and the warp of filter tube Ji property.

Utility model content

The purpose of this utility model, special Venturi nozzle is combined with anemostat, by pulse dust cleaning technology, Venturi tube The ingenious combination with fluidicss, obtains at double in the injection air-flow of traditional pulse injection, and makes air-flow precisely import filter tube, with Obtain larger drain and all pressures are blown effect.

This venturi injection tube for cleaner unit, including anemostat, Venturi nozzle, and filter cylinder, described anemostat It is provided with venthole, Venturi nozzle upper end is fixedly installed on venthole, and the under shed of Venturi nozzle is located at cartridge openings Top, described Venturi nozzle includes housing, jet pipe and reinforcement, and described housing is hollow cylinder, at housing upper and lower opening It is tubaeform that one-tenth extends out, and housing central authorities are provided with jet pipe, and jet pipe periphery is fixed by multiple reinforcements and housing exterior walls.

What from anemostat, venthole projected has fair speed, and the leading air-flow of elevated pressures, via jet pipe from shell Body under shed enters the filter cylinder air inlet of lower section, meanwhile, in high speed, under the drive of leading air-flow of high pressure, the first injection air-flow Enter drain air flue from housing upper opening, and follow leading air-flow and enter filter cylinder air inlet, additionally, in leading air-flow and first Under the drive of injection air-flow, the second injection air-flow pours in filter cylinder air inlet therewith from housing under shed.Using venturi principle, will The air-flow of three strands of different pressures imports filter cylinder, forms the air mass that pressure increases from outside to inside, this air mass is in fast downlink by interior And the outer pressure that discharges supplements the gas that air mass outer rim runs off, reach all pressure injections in filter cylinder length range.With respect to conventional bag The strength injection method of cleaner unit, this Venturi nozzle of the present utility model is inducted into more gas using relatively low air pressure Amount, keeps thering is higher uniform static pressure in filter cylinder, has reached higher deashing on the premise of preventing filter cylinder deformation strain Effect.

Described housing under shed is spaced with filter cylinder air inlet.Described it is spaced apart 120mm to 200mm.Less than this interval Minima is it is impossible to guarantee that the high-voltage high-speed airflow that the static low-voltage air-flow of the periphery of enough tolerance is followed in nozzle enters on filter cylinder Opening, does not reach drainage effect.And be higher than this spacer maximum value, then excessive periphery static low-voltage air-flow can be led to follow nozzle Interior high-voltage high-speed airflow enters filter cylinder upper shed, then can significantly slow down the flow velocity of leading air-flow so that mixed air-flow no Method arrives at the total length of filter cylinder, affects ash-removal effect.

Described housing cavity minimum diameter is 2 to 6 times of jet pipe caliber.Housing is empty as a larger Diffusion of gas stream Between, the high velocity air spraying in jet pipe projects and from the injection of housing under shed, the air-flow of this high-voltage high-speed from housing upper Gas at rest former in housing can be taken out of so that forming negative-pressure vacuum state in housing, thus causing the air inside and outside housing to produce Raw convection current, the gas of hull outside pours in into the housing cavity of negative-pressure vacuum state from housing upper shed, forms first time drain. Dominate under air-flow drive in the high speed that jet pipe ejects, the low speed flow that drain enters housing cavity can be realized accelerating in housing And rectification, project, with leading air-flow, the cartridge openings entering lower section from housing under shed.

Described reinforcement is purlin shape, and its one end is connected with jet pipe outer wall, and the other end is connected with housing upper shed outer wall. Reinforcement for connecting jet pipe and housing adopts purlin list structure, and connecting portion is located at housing exterior walls, and does not adopt common Connection sheet jet pipe outer wall is connected with housing exterior walls, its main purpose is to avoid housing upper shed and housing cavity There are too many obstruct, image gas drain and rectification effect.Using traditional connection chip architecture, air-flow can be made to enter housing cavity When intercepted, produce unnecessary excessive sinuous flow.

Described jet pipe top is arranged with arc pressuring plate, and arc central authorities are provided with through hole, jet pipe nesting in through-holes, Described arc pressuring plate upper surface is fitted tightly with diffusion pipe outer wall.

Arc pressuring plate upper surface is stretched out in jet pipe upper end, forms a protrusion connecting portion.

Described arc pressuring plate is provided with 4 connecting holes, and described connecting hole is respectively arranged at the drift angle of arc pressuring plate.

When arc pressuring plate is fitted with diffusion pipe outer wall, this prominent connecting portion can extend into the in the hole of giving vent to anger of anemostat, Play and be accurately positioned and reinforce interconnection function.Existing jet pipe typically directly be processed into and spread pipe outer wall by the portion of connecting The arc being consistent, then passes through or bolts, or riveting, or the mode of binding is directly connected with the venthole of anemostat, this side The operation impact that formula receives workmen is larger, is positioned manually due to relying on, installation accuracy is not high, leads to penetrating on same straight line Flow tube is crooked, the cartridge openings that even cannot accurately be directed at lower section having.Under soot blowing operating mode, receive the shadow of airstream vibration Ring, its connecting portion can slide along the outer wall of anemostat, gets loose, and bundle, using band, the jet pipe that mode is installed, or even understood Full deviation venthole.And this utility model adopts this kind of prominent connecting portion structure, need when mounted to stretch into boss connecting portion Gas outlet, realizes being accurately positioned so that the jet pipe on same anemostat is held on same plane.In soot blowing operating mode, This protrudes connecting portion can also prevent jet pipe from deviateing from gas outlet, play additional reinforcement effect.Arc pressuring plate and protrusion connect Portion combines it is ensured that installation site precision between Venturi nozzle and anemostat, and the arc that jet pipe outer wall fits tightly Shape connecting plate can also air-tightness at enhanced diffustion tube opening, it is to avoid the flow velocity of leading air-flow and the pressure loss.

Described jet pipe caliber is consistent with venthole internal diameter on anemostat.Housing upper shed is slightly stretched in jet pipe lower end.

Described blowing device also includes adapter, for Venturi nozzle is fixed on anemostat.

Brief description

With reference to the accompanying drawings and detailed description this utility model is described in further detail:

Fig. 1 is the blowing device schematic diagram of filter bag.

Fig. 2 is the blowing device schematic diagram of filter cylinder.

Fig. 3 is the structural representation of nozzle.

Fig. 4 is the injection configuration diagram of filter cylinder.

Fig. 5 is the injection framework generalized section of filter cylinder.

Fig. 6 is dust remover blowing soot cleaning system configuration diagram.

1- anemostat 2- Venturi nozzle 3- card 4- through hole 5- adapter 6- jet pipe 7- filter cylinder 8- housing 9- reinforcement 10- arc pressuring plate 11- projects connecting portion 12- pulse valve 13- plenum chamber

Specific embodiment

As illustrated, present embodiment discloses a kind of venturi injection tube for cleaner unit, including anemostat 1, civilian mound In nozzle, and filter cylinder 7, described anemostat 1 is provided with venthole, and Venturi nozzle upper end is fixedly installed on venthole, civilian mound In nozzle 2 under shed located at filter cylinder 7 overthe openings it is characterised in that: described Venturi nozzle includes housing 8, jet pipe 6 He Reinforcement 9, described housing 8 be hollow cylinder, at housing 8 upper and lower opening become extend out tubaeform, housing 8 central authorities are provided with jet pipe 6, jet pipe 6 periphery is fixed with housing 8 outer wall by multiple reinforcements 9.

The manufacture material of Venturi nozzle may be selected the nonmetallic materials such as plastics, nylon, polyester using works such as molding, injections Skill may also be employed the techniques such as metal-pressed machine, die casting, investment cast, or adopts metal and nonmetallic mixing manufacture and assembler Skill.

Described housing 8 under shed is spaced with filter cylinder 7 air inlet.

Described it is spaced apart 120mm to 200mm.

Described housing 8 inner chamber minimum diameter is 2 to 6 times of jet pipe 6 caliber.

What from anemostat 1, venthole projected has a fair speed, the leading air-flow of elevated pressures, via jet pipe 6 from Housing 8 under shed enters filter cylinder 7 air inlet of lower section, meanwhile, in high speed, under the drive of leading air-flow of high pressure, the first injection Air-flow enters drain air flue from housing 8 upper opening, and follows leading air-flow entrance filter cylinder 7 air inlet, additionally, in leading air-flow Under drive with the first injection air-flow, the second injection air-flow pours in filter cylinder 7 air inlet therewith from housing 8 under shed.Practice The determination of middle structure and fluid parameter can be according to pulse valve 12 discharge coefficient, plenum chamber 13 volume, injection tube physical dimension, leading The pressure that gas blowout is blown and the Venturi nozzle collocation of different structure and physical dimension, reach optimal injection effect.

Described reinforcement 9 is purlin shape, and its one end is connected with jet pipe 6 outer wall, and the other end is with housing 8 upper shed outer wall even Connect.

Described jet pipe 6 top is arranged with arc pressuring plate 10, and arc pressuring plate 10 central authorities are provided with through hole, and jet pipe 6 is embedding In through-holes, described arc pressuring plate 10 upper surface and anemostat 1 outer wall fit tightly set.

Arc pressuring plate 10 upper surface is stretched out in jet pipe 6 upper end, forms a protrusion connecting portion 11.

Described arc pressuring plate 10 is provided with 4 connecting holes, and described connecting hole is respectively arranged at the drift angle of arc pressuring plate.

Described jet pipe 6 caliber is consistent with venthole internal diameter on anemostat 1.Jet pipe 6 lower end is slightly stretched into and is opened on housing 8 Mouthful.In the presence of jet pipe 6 lower end jet-stream wind, can quickly the air-flow of relative quiescent in housing 8 be taken out of, in housing 8 Moment forms vacuum and produces negative pressure, causes the outer air-flow of housing 8 to pour at housing 8 upper shed.If housing is goed deep in jet pipe 6 lower end 8 is more, then the effect of taking out of of its air-flow is less, and the negative pressure of vacuum of formation drain cannot enter enough air；If jet pipe lower end Outside housing 8 upper shed, when its air-flow spurts into housing 8 upper shed from jet pipe 6 lower end, the gas outside housing 8 can be driven Stream together pours in housing 8, reduces the flow velocity of leading air-flow, simultaneously so that vacuum pumping rate is slower in housing 8, ultimately results in and draw Stream effect on driving birds is not good.

Described blowing device also includes adapter 5, for Venturi nozzle is fixed on anemostat 1.

This induced venturi injection tube provides one kind and can increase airflow injection ratio, simultaneously to the flow path of air-flow, air-flow The application technology of border blend pressure, the Diffusion of gas stream speed in addition jet injection of precise control.

During use, gamut is realized by the Venturi nozzle of the different size that changes the outfit, size and structure or adjustment injection parameter All pressure injections, can significantly improve the usage factor of blowing valve whenever necessary, and the raising of usage factor makes corrugated tube and folding cylinder remove The structure large-scale of dirt equipment and economy are possibly realized.

With above-mentioned be only preferred implementation of the present utility model it is noted that ordinary skill for the art For personnel, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improve and moisten Decorations also should be regarded as protection domain of the present utility model.

Claims (10)

1. a kind of venturi injection tube for cleaner unit, including anemostat, Venturi nozzle, and filter cylinder, on described anemostat It is provided with venthole, Venturi nozzle upper end is fixedly installed on venthole, and the under shed of Venturi nozzle is in cartridge openings Side it is characterised in that: described Venturi nozzle includes housing, jet pipe and reinforcement, described housing be hollow cylinder, on housing It is tubaeform that lower opening one-tenth extends out, and housing central authorities are provided with jet pipe, and multiple reinforcements and housing exterior walls are passed through in jet pipe periphery Fixing；Jet pipe and shell space are separated into some drain air flues by reinforcement.

2. as claimed in claim 1 a kind of venturi injection tube for cleaner unit it is characterised in that: described housing under shed Spaced with filter cylinder air inlet.

3. as claimed in claim 2 a kind of venturi injection tube for cleaner unit it is characterised in that: described be spaced apart 120mm to 200mm.

4. as claimed in claim 1 a kind of venturi injection tube for cleaner unit it is characterised in that: described housing cavity is Little internal diameter is 2 to 6 times of jet pipe caliber.

5. as claimed in claim 1 a kind of venturi injection tube for cleaner unit it is characterised in that: described reinforcement be purlin Strip, its one end is connected with jet pipe outer wall, and the other end is connected with housing upper shed outer wall.

6. as claimed in claim 1 a kind of venturi injection tube for cleaner unit it is characterised in that: described jet pipe top Be arranged with arc pressuring plate, arc central authorities are provided with through hole, jet pipe nesting in through-holes, described arc pressuring plate upper surface with Diffusion pipe outer wall fits tightly.

7. as claimed in claim 6 a kind of venturi injection tube for cleaner unit it is characterised in that: jet pipe upper end is stretched out Arc pressuring plate upper surface, forms a protrusion connecting portion.

8. as claimed in claim 6 a kind of venturi injection tube for cleaner unit it is characterised in that: described arc pressuring plate It is provided with 4 connecting holes, described connecting hole is respectively arranged at the drift angle of arc pressuring plate.

9. as claimed in claim 1 a kind of venturi injection tube for cleaner unit it is characterised in that: described jet pipe caliber Consistent with venthole internal diameter on anemostat.

10. as claimed in claim 1 a kind of venturi injection tube for cleaner unit it is characterised in that: described blowing device Also include adapter, for Venturi nozzle is fixed on anemostat.