CN101164659B - Bag-type dew dust remover - Google Patents

Abstract

A bag-type dew condensation dust collector specially used in the wet state of condensation. At least two of them are used in combination, one of which is dry and dust-cleaning off-line, and the other is normal dust removal, and the two are rotated. It is equipped with a drying air inlet pipe and a drying air door. After a certain period of dust removal, one of them will be offline, and dry hot air will be introduced to completely dry the bag and dust. The dust-scraping ring outside the bag is controlled by the cylinder to reciprocate up and down to scrape off the dust. Due to the double function of back blowing and dust scraping ring, all the dust will fall off, and the filter ability of the bag will be restored, so as to achieve the purpose of continuous and normal dust removal under the condition of condensation.

Description

Bag type condensation collector

technical field

The invention relates to a dust remover, in particular to a bag type dust remover which can be used for dew condensation.

Background technique

At present, the known bag filter must not be used in the state of wet condensation. This is recognized at home and abroad. The reason is that after the bag is wet, the collected dust will stick to the filter material and cannot be removed. , causing the filter material to be airtight, so that the filter becomes invalid and cannot be used.

Contents of the invention

In order to overcome the recognized technical problem of "the bag dust collector cannot be used for dew condensation", the present invention provides a bag type dust collector, which can solve the problem of bag paste and can be used in the dew condensation state.

The technical solution adopted by the present invention to solve its technical problems is: the provided bag filter, which includes a main box, a lower box, an air inlet pipe and an air inlet door, an air outlet, an air outlet pipe and an air outlet door, and a blow-back mouth, anti-blowing pipe and anti-blowing door, the flower plate located between the main box body and the lower box body, the upper end located in the main box body is sealed, and the lower end opening of the top plate is hung on the top plate by a spring and connected with the flower plate. A plurality of cloth bags connected to the lower box are designed with a plurality of ash scraping rings located in the cloth bag whose outer diameter is slightly smaller than the inner diameter of the cloth bag, and which can move up and down at equal intervals along the center line. The ash scraping rod that is fixedly connected with the scraping ring, the bracket that is located in the lower box and connected with multiple ash scraping rods that extend to the lower box with bolts, the cylinder that is located under the bracket and connected with the bracket with bolts, and the cylinder It is fixed on the cylinder base fixedly connected with the lower box body with bolts.

The above is the internal filter type. When used for the external filter type, the structure of the dust collector has an additional upper box, and a skeleton is added inside the bag. The flower plate between the upper box and the main box, and the fixed box in the main box The interior of the flower plate communicates with the upper box with a number of cloth bags, which are designed to have an inner diameter slightly larger than the outer diameter of the skeleton and slightly smaller than the outer diameter of the cloth bag when it is bulging. The upper and lower intervals along the center line of the cloth bag are equal. Multiple ash scraping rings that can move up and down, outside the ash scraping rings, in the gap between the cloth bags, use connecting bars to connect with the adjacent ash rings, and use bolts and extension rods under the cloth bags A bracket connected to a plurality of dust-scraping rods under the cloth bag, a cylinder located under the bracket connected with the bracket with bolts, and the cylinder is fixed with bolts on the cylinder seat that is fixedly connected with the lower box.

When the dew is used, the bag and the collected dust are wet. After using for a certain period of time or the resistance reaches a certain value, the bag and dust will be separated from the dust collector offline to dry the bag and dust. Accelerate the drying, use the hot gas emitted by the hot surface of the furnace itself to connect the drying air pipe with the pipeline, and become the dry hot gas. After the bag and dust are completely dried with the dry hot air, start the cylinder to reciprocate, and at the same time carry out the reaction. Blowing, at this time the bag shrinks, the filter material and dust will be in contact with the dust scraping ring moving up and down, and the dry dust will be scattered immediately. Fall into the ash hopper of the lower box to complete the ash cleaning process.

One dust collector can only be: dust removal → drying → dust removal → dust removal → drying → dust removal, such a reciprocating cycle of intermittent dust removal process, so for continuous dust removal, at least two dust collectors must be used together to form a unit.

In order to use at least two dust collectors in conjunction with continuous condensation, an automatic control device is specially designed and manufactured.

Advantages and positive effects: Two or more dust removal units are used in combination, one of which is dry and dust-cleaning off-line, and the rest are normal dust removal, realizing the continuous use of bag dust removal and breaking through the forbidden area where bag dust removal cannot be used for condensation.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a front view of the present invention.

Fig. 2 is an enlarged view of the specific structure of the dust scraping ring of part 9 in Fig. 1 .

Figure 3 is a diagram of the operating state of the first dust collector.

Figure 4 is a diagram of the operating state of the second dust collector.

Figure 5 is a diagram of the dust removal state of the joint use of two dust collectors.

Fig. 6 is a front view of Embodiment 2.

Fig. 7 is a connection plan view of the specific structural structure of the dust scraping ring of part 9 in Fig. 6 .

In the figure: 1. Cylinder seat, 2. Cylinder, 3. Bracket, 4. Lower box, 5. Ash scraping rod, 6. Drying damper, 7. Drying air duct, 8. Cloth bag, 9. Ash scraping ring, 10 , main box, 11, anti-air duct, 12, anti-air door, 13, anti-air inlet, 14, air outlet, 15, air outlet, 16, air outlet, 17, air inlet, 18, inlet door, 19, connection bar, 20, flower plate, 21, upper box body.

implementation plan

Implementation 1

Specific embodiment of the present invention 1 referring to Fig. 1, Fig. 2, by main box body 10, flower board 20, lower end and flower board fix four rows of cloth bags 8, lower box body 4, air inlet pipe whose upper end is suspended on the top plate by springs 17. The air outlet pipe 16 and the anti-blow pipe 11 constitute the main body of the dust collector. The cloth bag 8 with a design diameter of 15cm and a length of 2m is equipped with 4 bags with an outer diameter of 14.6cm at an even interval of 50cm that can move up and down. The ash scraping ring 9 is made of a steel wire with a diameter of 0.4cm, and each ash scraping ring is fixedly connected to the ash scraping rod 5 at the center of the ash scraping ring 9 with 4 connecting bars 19, and each ash scraping rod The lower end of 5 extends into the lower box body 4, and is fixed on the support 3 that does not prevent the dust from falling with bolts. The support 3 is connected to the telescopic rod equipped with the dust-proof telescopic sleeve of the cylinder 2 below, and the cylinder 2 is seated in the lower box. On the solidly connected cylinder block 1, a dust scraping device is formed.

The dew condensation usage plan also includes a mechanism for drying and drying the cloth bag and the dust attached to the cloth bag, which is composed of the drying air duct 7, the drying air door 6 and the related air inlet door 18, air outlet door 15, and anti-air door 12. ; The drying wind in the drying air duct of this program adopts dry hot air. The hot air source is to use the heat energy of the outer surface of the kiln body that produces smoke and dust, and wrap a layer of heat insulation board 0.5 meters outside the outer surface, and connect it with the drying air pipe with pipelines to become dry hot air.

When the cloth bag 8 is used for a certain period of time to condense or the resistance rises to a certain value, close the air inlet door 18, stop dust removal, and enter the drying process. At this time, open the drying damper 6, keep the air outlet door 15 open, and keep the reverse blowing door 12 closed. , Dry hot air just enters like this and passes through cloth bag, cloth bag and dust are dried, and the water vapor after the evaporation enters air outlet pipe 16 and is discharged into atmosphere with air through air outlet 14.

After the cloth bag and dust are completely dry, close the drying damper 6 and the air outlet gate 15, open the reverse blowing gate 12 and the intake gate 18, and at the same time start the cylinder 2 to drive the ash scraping ring 9 to reciprocate up and down. , the dry dust on the inner wall of the cloth bag comes into contact with the ash scraping ring 9 and immediately falls off, and the back blowing blows the dry dust away from the filter cloth and falls into the ash hopper. The tuyere enters the air inlet pipe 17.

The ash scraping ring 9 is spaced at 50cm, and the cylinder stroke is 60Ccm, which ensures that all of them are scraped without leaving a dead angle.

After the cleaning is completed, close the anti-blowing door 12, open the air outlet door 15, keep the closed state of the drying air door 6 and the open state of the air inlet door 18, resume the dust removal process, and complete a cycle.

A single dust collector can only work intermittently and cannot continuously remove dust. At least two of them must be used in combination to achieve the purpose of continuous dust removal, that is, one is dry for dust removal, the other is for normal dust removal, and the two work in rotation. This plan uses two .

Figure 3, Figure 4, and Figure 5 are the operating state diagrams when two single units and two units are used in combination. The abscissa is the time, represented by t; the ordinate is the processing air volume, represented by q.

Figure 3 shows that the first unit is in the normal state of dust removal from the beginning, and the time starts from 0 to point A, and the time used for dust removal is 1 hour; then stop dust removal, dry, and reach point B from point A, the time used is 58 minutes, The cloth bag and dust have been completely dry, and then enter the next procedure - dust removal; at this time, due to the dual functions of the dust scraping ring 9 and the back blowing, the dust can be removed quickly, and the time spent from point B to point C is only 2 Minutes, and because it is blowing in reverse, so the processing air volume of the dust collector is negative at this time; after the dust is cleaned, it is put into the dust removal again, from point C to point D, and the cycle continues like this.

Figure 4 is the second one. It was in the drying stage at the beginning, and it took 58 minutes from 0 to A; it took 2 minutes to remove dust from A to B, and it took 1 hour to dry and clean; then it entered the dust removal stage, from B to C The time is 1 hour; then enter the drying stage from C to D for 58 minutes, and the dust cleaning stage from D to E for 2 minutes; after the dust cleaning is completed, it enters the dust removal stage, and the cycle continues.

Figure 5 shows that when two units are used in combination, the dust removal is carried out continuously.

Embodiment 2

According to the filtering method, the bag filter is divided into two types: inner filter and outer filter. The structure of the outer filter dust collector has an additional upper box, and a skeleton is added inside the cloth bag. Scheme 1 is the inner filter type, and scheme 2 is the outer filter type. In this way, the dust is collected on the outer surface of the bag. The specific structure of this scheme 2 is shown in Fig. 6 and Fig. 7, and the difference with scheme 1 is: dust-scraping ring 9 is enclosed within the outside of cloth bag 8.

The outer diameter of the frame is designed to be 14cm (due to the contraction of the bag during dust removal in the external filter type, there must be a frame to support the bag), the diameter of the bag when it is bulging is 15cm, and the outer cover of the bag 8 with a length of 2m is evenly spaced. The internal diameter of 50cm is 14.6cm (skeleton outer diameter at this moment will be less than about 0.6cm of ash scraping ring internal diameter) can reciprocate up and down 4 ash scraping rings 9, ash scraping ring 9 is made with the steel wire of diameter 0.4cm, every A dust-scraping ring 9 is fixedly connected to the dust-scraping rod 5 in the gap between the cloth bags on the outside of the dust-scraping ring with 4 connecting bars 19, and the lower end of each dust-scraping rod 5 extends into the lower box 4, Be fixed on the support 3 with bolts, the support 3 links to each other with the expansion rod of the cylinder 2 below, and the cylinder 2 is seated on the cylinder base 1 which is fixedly connected with the lower box to form a dust scraping device.

The dust removal process is the same as scheme 1, the difference is that the bag 8 shrinks during dust removal instead of bulging.

The drying process is the same as plan 1, the difference is that the dry hot air enters the bag through the fabric from the outside of the bag, instead of penetrating from the inside of the bag to the outside of the bag.

The dust removal process is the same as that in scheme 1, the difference is that the bag 8 bulges instead of shrinking during dust removal. Because the diameter when cloth bag 8 bulges is 15cm, and the inner diameter of dust-scraping ring 9 is 14.6cm, is less than the diameter of cloth bag 8, at this moment the outer surface of cloth bag 8 all contacts with dust-scraping ring 9, and dust is all removed.

For continuous dust removal, at least two units should be used in combination, and their operating status and process are the same as those of Scheme 1, see Figure 3, Figure 4 and Figure 5.

Claims (3)

1. A bag-type dew condensation collector of inner filter type, which includes: The main box, the lower box, the air inlet pipe and the air inlet door, the air outlet, the air outlet pipe and the air outlet door, the anti-air outlet, the anti-air pipe and the anti-air door, the flower plate between the two boxes, and the main box Inside the body, the upper end is suspended on the top plate of the main box and the lower end is fixed on the flower plate, which is characterized by: The dust collector also includes: a plurality of ash scraping rings located in the bag, whose outer diameter is slightly smaller than the inner diameter of the bag, equally spaced up and down along the center line, and movable up and down along the axis; The ash-scraping rod that is fixedly connected with the connecting strip and the ash-scraping ring, the bracket that is located in the lower box and connected with multiple ash-scraping rods that extend to the lower box with bolts, and the cylinder that is located under the bracket and is connected with the bracket with bolts; The cylinder is fixed on the cylinder seat which is fixedly connected with the lower box body with bolts; the outer lower part of the main box body is equipped with a drying air inlet pipe and a drying damper. 2. An inner filter bag-type dew condensation collector according to claim 1, characterized in that: the incoming dry air is dry hot air taken from the hot surface of the furnace and kiln itself that generates smoke and dust. 3. An external filter bag type dew condensation collector, which includes: Upper box, main box, lower box, air inlet pipe and air inlet door, air outlet, air outlet pipe and air outlet door, anti-air outlet, anti-air pipe and anti-air door, drying air pipe and drying door, located on the upper The flower plate between the box body and the main box body, a plurality of cloth bags fixed on the flower plate located in the main box body, and a skeleton located in the cloth bag are characterized by: The dust collector also includes: A plurality of ash scraping rings located outside the bag, whose inner diameter is slightly larger than the outer diameter of the frame and slightly smaller than the outer diameter of the bag when it is inflated, are set outside the bag, are spaced equally up and down along the center line of the bag, and can move up and down along the axis; The ash scraping rod located outside the ash scraping ring and in the gap between the cloth bags, which is fixedly connected with the adjacent ash scraping ring by connecting strips; The bracket located under the cloth bag is connected by bolts to a plurality of scraping rods extending below the cloth bag; The cylinder located under the bracket is connected with the bracket by bolts; Cylinder is bolted on the cylinder base that is fixedly connected with lower casing.

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