CN201010660Y - Impulse blowing device and dust collecting equipment using the same - Google Patents

Abstract

The utility model provides an impulse injecting device, which comprises a bagged cage and an impulse injecting component. The impulse injecting component comprises an injecting main pipe, an injecting branch pipe outwardly extending from the injecting main pipe, and a gas bag, an impulse valve and a cabinet injecting inlet connecting pipe that are connecting with the injecting main pipe. The utility model is characterized in that the injecting device has at least two sets of impulse injecting components, the nozzle orifice of the injecting branch pipe of the first set impulse injecting component is equipped at the opening at the upper end of the bagged cage; the injecting branch pipe of the second or above set impulse injecting component extends out from the injecting branch pipe of the first set impulse injecting component and concentrically equipped with the injecting branch pipe of the first set impulse injecting component, and the nozzle orifice of the injecting branch pipe of the second or above set impulse injecting component is equipped inside the bagged cage. The utility model also provides an impulse injecting device using the device. The device is suitable for a woven bag with diameter of 12-16 m, and can be conveniently and rapidly arranged.

Description

Pulse spraying equipment and use the dust removal installation of this pulse spraying equipment

Technical field

The utility model relates to a kind of dust-removal system of blast furnace gas, particularly relates to the pulse spraying equipment in a kind of dedusting of blast furnace gas system and uses the dust removal installation of this device.

Background technology

The dust removal installation of blast furnace gas generally includes casing and cloth bag, utilizes cloth bag to capture to enter solid particulate matter in the dusty gas of casing.Solid particulate in the dusty gas is deposited on the cloth bag by the sieving effect of gravity settling effect, mass force effect, thermal motion effect, electrostatic attraction effect and cloth bag.When cloth bag was brought into use, through after a while, skim dust layer (being called dust dirt just) had been gathered on the surface, afterwards in service, this dust just dirt becomes main filtering layer, has improved the efficiency of dust collection of cloth bag, and this moment, cloth bag then only worked to form and support dust dirt just.But when dust layer surpassed certain thickness, the efficiency of dust collection of cloth bag reduced, even loses the dedusting effect, therefore thick dust need be removed from the cloth bag wall.Cloth bag purge mode commonly used has blowback air-flow deashing and pulse jet vibration cleaning, the air pulse that pulse jet vibration cleaning wherein utilizes pressurized air or nitrogen to expand at a high speed to the cloth bag winding-up via pulse valve, produce shockwave, winding-up vibration cloth bag, thus the dust that sticks on the cloth bag removed.Bag pulse dedusting equipment is because it is simple in structure, compact, and filter dirt is effective, energy consumption is low and be widely used in the dedusting of all gases medium or solid and gas barrier technology.

The dust collection capacity of bag pulse dedusting cloth bag depends on the cloth bag area in the unit volume to a great extent, and the total area of single dust removal installation depends on box shape size, cloth bag diameter and cloth bag length.Generally speaking, box shape size and cloth bag diameter are certain, so the total area depends on the length of cloth bag.Use long cloth bag, then the filtration area of single casing increases, and keeping can reducing the casing quantity of dust removal installation under the constant condition of total filtration area, can reduce the floor space of dust removal installation thus, reduces investment, reduces cost.But because the cloth bag length increases, the winding-up scarce capacity of existing pulse spraying equipment, can't remove the laying dust on the cloth bag wall effectively, especially along with air pulse weakening along the cloth bag length direction, cause the ash-removal effect of cloth bag bottom bad, limited further developing of bag pulse dedusting equipment.

The patent No. of Capital Iron ﹠ Steel General Co is that the utility model patent of ZL200420118845.2 discloses a kind of blast furnace gas low pressure pulse bag filter, it has installed two cover pulse valve and blowing devices on the fly-ash separator housing, this two covers blowing device is synchronously to blowing, improve the winding-up ability of pulse spraying equipment, cloth bag can have been risen to 8-10 rice.But two cover blowing devices are carried out synchronously to blowing, certainly will offset part surging force each other in the journey to blowing over, weaken the winding-up ability, and because winding-up is managed the while to a plurality of cloth bags winding-up air-flows, the winding-up air-flow that is distributed in each cloth bag may be inhomogeneous, and this device can not solve air pulse and the vibration of cloth bag weakened the problem of the ash-removal effect difference of cloth bag bottom in the cloth bag bottom, therefore owing to be subjected to the restriction of pulse jet ability, this fly-ash separator can't be applicable to longer cloth bag.

The utility model content

A purpose of the present utility model provides a kind of pulse spraying equipment, and it can solve, and cloth bag bottom ash-removal effect is poor, the problem of cloth bag length limited system.

First scheme of the present utility model provides a kind of pulse spraying equipment, comprise bag cage and pulse blowing component, pulse blowing component comprise the winding-up house steward, from the winding-up radially-protruding winding-up arm of house steward and with the gas bag that links to each other of winding-up house steward, pulse valve and casing winding-up inlet pipe connecting, it is characterized in that, this pulse spraying equipment has at least two group pulses winding-up assembly, and the spout of the winding-up arm of first group pulse winding-up assembly is arranged on a bag cage upper end open portion place; The winding-up arm of the pulse blowing component that second group and second group are above in the winding-up arm of first group pulse blowing component, stretch out and with the concentricity setting of winding-up arm of first group pulse blowing component, its spout is arranged on a bag cage inside.Because the outlet of the winding-up arm air-flow of second group and second group above pulse blowing component is arranged on different positions along bag cage length direction, can be under the constant situation of the winding-up ability of each group pulse winding-up assembly, the length of cloth bag is double, guarantee the ash-removal effect of cloth bag bottom simultaneously.

Alternative plan of the present utility model is on the basis of first scheme, described winding-up arm and the segmentation of bag cage more than second group and second group is provided with, described winding-up arm more than second group and second group is divided into the winding-up arm and the arm of jetting down, described upward winding-up arm and its winding-up house steward are wholely set, and the described arm of winding-up down is according to the bag cage hop count segmentation that coincides; Second group following winding-up arm is provided with the load-bearing ring, every section bag cage that coincides with the arm of jetting down also comprises a plurality of set collars of concentricity setting, described set collar is connected to bag web member of cage inwall, the external diameter of described load-bearing ring is greater than the internal diameter of described set collar, every section described arm of winding-up down is located in the set collar of corresponding bag cage, the load-bearing ring seat is therein on set collar, the concentric sets zoarium that forms as one; One end of the every section arm of jetting down is provided with the insertable sleeve pipe in opposite end of winding-up arm under another section, thereby two sections arms of jetting are down linked together; Described gas bag homonymy is arranged or positioned opposite.

In addition, the winding-up house steward of described every group pulse winding-up assembly and casing winding-up inlet pipe connecting link together by retaining ring, wear ring and adjusting semi-ring; Described retaining ring is fixedly installed on every group of winding-up house steward's a end that is connected with casing winding-up inlet pipe connecting, side towards casing winding-up inlet pipe connecting is provided with annular recesses, described seal ring set is on the winding-up house steward, and be fixed in the described groove, one end of casing winding-up inlet pipe connecting stretches in the wear ring, be fixed on casing winding-up inlet pipe connecting by regulating semi-ring, house steward and the casing winding-up inlet pipe connecting of will jetting links together, thereby make casing winding-up inlet pipe connecting be easy to dismounting and replacing, be convenient to maintenance.

Have, the utility model provides a kind of dust removal installation that uses this pulse spraying equipment, comprises casing, cloth bag, lattice board and pulse spraying equipment again.

Description of drawings

Fig. 1 is the cross-sectional schematic of pulse jet equipment that comprises the two-stage pulse spraying equipment of a specific embodiment of the utility model.

Fig. 2 is the cross sectional side synoptic diagram of the thin portion mode of connection of the one-level winding-up house steward of embodiment shown in Fig. 1 and secondary winding-up house steward and arm thereof.

Fig. 3 is the structural representation of the concentric sets zoarium of a specific embodiment of the utility model.

Fig. 4 is the sectional plane along B-B line among Fig. 3.

Fig. 5 is the sectional plane along A-A line among Fig. 3.

Fig. 6 is the partial enlarged view of II portion among Fig. 3.

Fig. 7 is the partial enlarged view of I portion among Fig. 1.

Embodiment

Fig. 1 shows an embodiment of the present utility model, is a cross-sectional schematic that comprises the pulse jet equipment of two-stage pulse spraying equipment specifically, and shown in the figure, this equipment comprises casing 9, lattice board 5 and two-stage pulse spraying equipment.Wherein the two-stage pulse spraying equipment comprises bag cage 7 and two group pulses winding-up assembly, first group pulse winding-up assembly comprises horizontally disposed one-level winding-up house steward 11, one-level winding-up arm 10 that radially stretches out downwards from this one-level winding-up house steward 11 and the gas bag 2 that links to each other with one-level winding-up house steward 11, pulse valve 1,3 and casing winding-up inlet pipe connecting 4, second group pulse winding-up assembly comprises horizontally disposed secondary winding-up house steward 12, secondary winding-up arm 8 that radially stretches out downwards from this secondary winding-up house steward 12 and the gas bag 2 that links to each other with secondary winding-up house steward 12 ', pulse valve 1 ', 3 ' and casing winding-up inlet pipe connecting 4 ', the spout of one-level winding-up arm 10 is arranged on bag cage 7 upper end open portions place, secondary winding-up arm 8 stretches out in one-level winding-up arm 10, and with the 10 concentricity settings of one-level winding-up arm, the spout of secondary winding-up arm 8 is arranged in bag cage 7 about 8 meters below lattice board.Pressurized gas is from gas bag 2,2 ' by pulse valve 1,1 ' discharge air pulse, through valve 3,3 ' and casing winding-up inlet pipe connecting 4,4 ' import respectively one-level winding-up house steward 11 and one-level winding-up arm 10 and secondary winding-up house steward 12 and secondary winding-up arm 8.Bag cage 7 is fixed on the lattice board 5, is used to support cloth bag 6, prevents cloth bag 6 adhesive when negative pressure.

From Fig. 1, can clearly be seen that, the one-level air pulse is from the spout ejection of one-level winding-up arm 10, this goes out spout and is positioned at lattice board 5 tops, bag cage 7 upper end open portions place, the secondary air pulse then sprays by the spout of secondary winding-up arm 8, this spout is positioned at bag cage 7 inside, about 8 meters, lattice board 5 belows.The distance of the jet opening distance lattice board 5 of this secondary winding-up arm 8 can be decided according to the winding-up ability of air pulse, common pulse spraying equipment is that the cloth bag ash-removal effect of 6-8 rice is best to length, so 6-8 rice, lattice board below, only need the one-level pulse jet just can realize good bottom ash-removal effect, the secondary pulse jet can guarantee that the cloth bag of 6-8 rice below reaches the ideal ash-removal effect.Therefore, this two-stage pulse spraying equipment can guarantee that the long cloth bag of about 12-16 rice reaches the ideal ash-removal effect.Draw the notion of one-level pulse jet and secondary pulse jet thus, one-level pulse jet and secondary pulse jet can be arranged to jet simultaneously or the winding-up of first one-level by programming, carry out the secondary winding-up again, or otherwise carry out.

The utility model is by above-mentioned two-stage pulse spraying equipment and use the pulse dust removal equipment of this two-stage pulse spraying equipment that principle of design of the present utility model is set forth, and pulse spraying equipment of the present utility model also can comprise many group pulse winding-up assemblies, when for example comprising three group pulses winding-up assembly, third stage winding-up house steward is parallel to firsts and seconds winding-up house steward in regular turn and is horizontally set on secondary winding-up house steward top, third stage winding-up arm radially stretches out downwards from third stage winding-up house steward, with one, secondary winding-up arm concentric arrangement, extend in the lattice board below and locate below 8 meters, its development length can be provided with as required.Therefore can be used for longer cloth bag according to multi-pulse blowing device of the present utility model, and can guarantee that the cloth bag bottom obtains good ash-removal effect.

Fig. 2 is one-level winding-up house steward 11 and one-level winding-up arm 10 and secondary winding-up house steward 12 and the thin bilge construction of secondary winding-up arm 8 and the schematic side view of mode of connection of embodiment shown in Fig. 1, winding-up house stewards at different levels radially stretch out several winding-up arms downwards, and the quantity of arm equates with the quantity of cloth bag to be provided with.In order to be easy to realize and operation in actual applications, bag cage segmentation in the utility model is provided with, secondary winding-up arm 8 is divided into winding-up arm 21 and the arm 22 of jetting down, last winding-up arm 21 is wholely set with secondary winding-up house steward 12, one-level winding-up arm 10 is wholely set with one-level winding-up house steward 11, the mode of connection of winding-up house stewards at different levels and arm can be welding, or other any attainable technology.Be convenient to the installation and the maintenance of equipment like this, can and go up winding-up arm integral body and pack into or draw off winding-up house stewards at different levels.

The utility model is installed for convenience quickly, the section that the bag cage that stretches into the winding-up arms down at different levels more than second group and second group in bag cage and coincide is divided into equal amts, on the following winding-up arm of each section more than second group and second group, be fixed with the load-bearing ring by modes such as welding, be provided with a plurality of concentric set collars and set collar is connected to bag web member of cage inwall in the cage at the bag that coincides with the following winding-up arm of each section more than second group and second group, the internal diameter of set collar is greater than the external diameter of described following winding-up arm more than second group and second group, second group and second group above following winding-up arm of each section is located in the set collar of corresponding bag cage, the load-bearing ring seat is therein on set collar, the concentric sets zoarium that forms as one.

Fig. 3 is that the utility model is the structural representation of concentric sets zoarium of a specific embodiment of example with the two-stage pulse spraying equipment, among the figure as can be seen, as mentioned above, the concentric sets zoarium comprises bag cage 7, secondary winding-up arm 22, the load-bearing ring 14 that fixedly installs, several and bag set collar 13 and the web member 20 of cage 7 concentricity settings down on winding-up arm 22 under every section secondary.Every section secondary winding-up arm 22 down penetrates several set collars 13 in the corresponding sectional bag cage 7 from top to bottom or from the bottom to top, with this section concentric sets zoarium in the set collar 13 corresponding positions of topmost, fixedly installing load-bearing ring 14 on the winding-up arm 22 under the sectional secondary, on the set collar 13 of 14 topmosts in the fit section of corresponding concentric sets of load-bearing ring, thus sectional bag cage 7 and corresponding sectional secondary down winding-up arm 22 by with set collar 13, web member 20 and the load-bearing ring 14 of bag cage 7 concentric settings, be fixed together.Load-bearing ring 14 preferably be arranged on sectional bag cage 7 in the set collar 13 corresponding positions of foot, like this, the sectional secondary top of winding-up arm 22 down has certain adjusting surplus, more helps and the winding-up arm 22 socket joints installation down of other sectional secondary.Only demonstrate among the figure from the secondary of secondary winding-up house steward 12 radially-protruding secondarys winding-up arms 8 down two sections concentric sets zoariums of two sections bag cages formation of winding-up arm 22 and top structure and between mode of connection, the hop count of concentric sets zoarium depends on the length of winding-up arm 22 under the secondary, for example, if the secondary length of winding-up arm 22 down is 6 meters, every section is divided into 2 meters, then need to be divided into three sections,, then need to be divided into four sections if every section is divided into 1.5 meters.Secondary winding-up arm 22 down may form multistage concentric sets zoarium with the bag cage that coincides, and the following bag cage that does not contain winding-up arm 22 under the secondary that also will be connected with usually of concentric sets zoarium does not illustrate this part bag cage among the figure.

Fig. 4 is the sectional view along A-A line among Fig. 3, can clearly be seen that among the figure, set collar 13 is fixed on bag inwall of cage outer ring 19 by web member 20, and with the 19 concentricity settings of bag cage outer ring, secondary winding-up arm 22 down penetrates in the set collar 13, and the internal diameter of set collar 13 is slightly larger than the external diameter of winding-up arm 22 under the secondary, and winding-up arm 22 is subjected to the constraint of set collar 13 under the secondary, concentricity with set collar 13, thus concentricity with bag cage outer ring 19.

Fig. 5 is the sectional view along B-B line among Fig. 3, the concentric load-bearing ring 14 of fixedlying connected with the outer wall of the following winding-up of secondary arm 22 further is shown among the figure, its external diameter is greater than the internal diameter of described set collar 13, seat is on set collar 13, thus, by set collar 13, web member 20 and load-bearing ring 14, winding-up arm 22 under the sectional secondary and sectional bag cage 7 are formed the concentric sets zoariums.

Fig. 6 is the partial enlarged view of II portion among Fig. 3, there is shown the socket joint mode of connection between the winding-up arm 22 under every section secondary of sectional, one end of the every section arm 22 of jetting down is provided with the sleeve pipe that internal diameter is slightly larger than the external diameter of secondary winding-up arm, another section opposite end of winding-up arm 22 down inserts in this sleeve pipe, thereby two sections arms 22 of jetting are down linked together.When multistage concentric sets zoarium is fitted together, combination by the bag cage, the sectional secondary also links together by the socket joint mode between the winding-up arm 22 down simultaneously, like this, owing to adopt the concentric sets whole body structure, both guaranteed the concentricity of the following winding-up of secondary arm 22 during installation, made easy for installation, quick again with bag cage 7.

Concentric sets whole body structure shown in Fig. 3 also is applicable to the multi-pulse blowing device, adopts this structure, makes the easy for installation, quick of pulse spraying equipment, and is convenient to change and safeguard.

The I and II winding-up tube inlet pipe connecting 4,4 of I and II winding-up house steward 11,12 shown in Fig. 1 ' also be connected by the socket joint mode with I and II winding-up house steward 11,12 makes installation and changes easier, quick.

Fig. 7 is the partial enlarged view of I portion among Fig. 1, it is I and II winding-up house steward's 11,12 I and II winding-up tube inlet pipe connecting 4,4 ' and the partial enlarged drawing of I and II winding-up house steward's 11,12 socket joint mode of connection, as can be seen from Figure 7, be provided with retaining ring 15, wear ring 16 and adjusting semi-ring 17 in winding-up house steward's 11,12 ingress, casing winding-up inlet pipe connecting 4,4 ' realize that by the retaining ring 15, wear ring 16 and the adjusting semi-ring 17 that are welded in the winding-up house steward socket joints are connected with winding-up house steward 11,12.Winding-up house steward 11,12 with casing winding-up inlet pipe connecting 4,4 ' the end that is connected is welded with retaining ring 15, retaining ring 15 is towards casing winding-up inlet pipe connecting 4,4 ' the side be provided with belt inside groove, in order to fixing seal ring 16, during installation, earlier fixing seal ring 16 is enclosed within winding-up house steward 11,12 with casing winding-up inlet pipe connecting 4,4 ' the end that is connected, and be fixed in the annular recesses of retaining ring 15, then with casing winding-up inlet pipe connecting 4,4 ' stretch in the fixing seal ring 16, regulating semi-ring 17 is a ring that does not seal, can be along casing winding-up inlet pipe connecting 4,4 ' radially are enclosed within on the pipe outer wall, use fixed form such as iron wire will regulate semi-ring 17 and casing winding-up inlet pipe connecting 4 at last, 4 ' be fixed together will jet thus house steward 11,12 and casing winding-up inlet pipe connecting 4,4 ' connect.During dismounting, will regulate semi-ring 17 earlier and unload, the pipe connecting 4,4 that the casing winding-up can be entered the mouth ' unload if fixing seal ring 16 is slided to casing winding-up inlet pipe connecting 4,4 ' one sides, then can unload winding-up house steward 11,12.By this socket joint mode, can easily dismantle and change winding-up tube inlet pipe connecting 4.

In addition, the gas bag 2 of one-level pulse blowing component and the gas bag 2 of secondary pulse blowing component ' be positioned opposite, but its also homonymy arrange.

Can be used for various bag-type dust equipment according to pulse spraying equipment of the present utility model, as deashing device, this bag-type dust equipment is applicable to the cloth bag that 12-16 rice is above.

Shown in the above and the accompanying drawing only is embodiment of the present utility model, and it only is illustrative, is not to restriction of the present utility model, and those skilled in the art can make various changes and improvements in view of the above and can not depart from purport of the present utility model.Therefore, the various changes and improvements that it will be apparent to those skilled in the art that drop in the protection domain of the present utility model.

Claims (7)

1. pulse spraying equipment, comprise bag cage and pulse blowing component, pulse blowing component comprise the winding-up house steward, from the winding-up radially-protruding winding-up arm of house steward and with the gas bag that links to each other of winding-up house steward, pulse valve and casing winding-up inlet pipe connecting, it is characterized in that, this pulse spraying equipment has at least two group pulses winding-up assembly, and the spout of the winding-up arm of first group pulse winding-up assembly is arranged on a bag cage upper end open portion place; The winding-up arm of the pulse blowing component that second group and second group are above in the winding-up arm of first group pulse blowing component, stretch out and with the concentricity setting of winding-up arm of first group pulse blowing component, its spout is arranged on a bag cage inside.

2. pulse spraying equipment as claimed in claim 1, it is characterized in that, the segmentation of described bag cage is provided with, described winding-up arm more than second group and second group is divided into the winding-up arm and the arm of jetting down, described upward winding-up arm and its winding-up house steward are wholely set, and the described arm of winding-up down is according to the bag cage hop count segmentation that coincides.

3. pulse spraying equipment as claimed in claim 2, it is characterized in that, described second group following winding-up arm is provided with the load-bearing ring, every section bag cage that coincides with the arm of jetting down also comprises a plurality of set collars of concentricity setting, described set collar is connected to bag web member of cage inwall, the external diameter of described load-bearing ring is greater than the internal diameter of described set collar, every section described arm of winding-up down is located in the set collar of corresponding bag cage, the load-bearing ring seat is therein on set collar, the concentric sets zoarium that forms as one.

4. pulse spraying equipment as claimed in claim 3 is characterized in that, an end of the every section arm of jetting down is provided with the insertable sleeve pipe in opposite end of winding-up arm under another section, thereby two sections arms of jetting are down linked together.

5. pulse spraying equipment as claimed in claim 3 is characterized in that, described gas bag homonymy is arranged or positioned opposite.

6. pulse spraying equipment as claimed in claim 3 is characterized in that, the winding-up house steward of described every group pulse winding-up assembly and casing winding-up inlet pipe connecting link together by retaining ring, wear ring and adjusting semi-ring; Described retaining ring is fixedly installed on every group of winding-up house steward's a end that is connected with casing winding-up inlet pipe connecting, side towards casing winding-up inlet pipe connecting is provided with annular recesses, described seal ring set is on the winding-up house steward, and be fixed in the described groove, one end of casing winding-up inlet pipe connecting stretches in the wear ring, be fixed on casing winding-up inlet pipe connecting by regulating semi-ring, house steward and the casing winding-up inlet pipe connecting of will jetting links together.

7. a dust removal installation comprises casing, cloth bag, lattice board and pulse spraying equipment, it is characterized in that, described pulse spraying equipment is each described pulse spraying equipment among the claim 1-6.

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