CN204865414U - Chemical fertilizer production dust collector - Google Patents

Abstract

The utility model discloses a dust removal device for chemical fertilizer production, which comprises a settling chamber, an auger, a bag-type dedusting chamber and an induced draft fan; The dust removal room is connected, and the auger is located below the settling chamber and the bag type dust removal room and runs through the settling room and the bag type dust removal room. It is connected with the induced draft fan through the ventilation channel, and the outlet of the induced draft fan is connected with the exhaust pipe. The dust removal device reduces the dust content in the air of the production site, improves the working environment of the production site, and ensures the health and safety of the operating workers. At the same time, dust materials are collected in a concentrated manner, which reduces the labor intensity of workers and saves production costs.

Description

A dust removal device for fertilizer production

technical field

The utility model relates to a dust removal device for chemical fertilizer production.

Background technique

The original construction design of the dust removal device for the production of nitro compound fertilizer is to use cyclone dust removal to remove dust from the production site, but the effect of cyclone dust removal is not obvious. After actual trial operation, the amount of dust on the tower is too high. 28mg/m ³ , not only pollute the on-site operating environment, but also need to arrange special personnel to clean up every hour, which increases the labor intensity of workers, and also seriously affects the health and safety of workers. Environmental pressure has become a bottleneck restricting production at the same time.

Utility model content

In order to solve the above problems, the utility model proposes a dust removal device for chemical fertilizer production. The dust removal device reduces the dust content in the air of the production site, improves the working environment of the production site, and ensures the health and safety of the operators. At the same time, dust materials are collected in a concentrated manner, which reduces the labor intensity of workers and saves production costs.

In order to achieve the above object, the utility model adopts the following technical solutions:

A dust removal device for chemical fertilizer production, including a settling chamber, an auger, a bag-type dust removal chamber and an induced draft fan; the top of the left side of the settling chamber is provided with an air inlet connected to the dust-containing tail gas pipeline, and the inside of the settling chamber is communicated with the bag-type dust removal chamber. The auger is located below the settling chamber and the baghouse and runs through the settling chamber and the baghouse. The tail ends of the settling chamber and the baghouse are respectively equipped with dust cleaning ports, and the outlet of the baghouse passes through the air duct and The induced draft fan is connected, and the outlet of the induced draft fan is connected with the exhaust pipe. The dust-laden exhaust gas enters the dust removal device through the air inlet, passes through the settling chamber, the bag-type dust removal chamber in turn, and finally the purified exhaust gas is discharged by the induced draft fan. The whole dust removal process is simple and compact.

The settling chamber includes a first settling chamber, a second settling chamber, a third settling chamber and a dust filter plate. The settling chamber is a cuboid with a cavity structure inside. From left to right are the first settling chamber, the second settling chamber and the In the third settling chamber, two adjacent settling chambers are separated by a dust filter plate. The setting of multiple settling chambers and multiple dust filter plate structures can slow down the flow velocity of the dust-laden exhaust gas, help to improve the settling effect and accelerate the settling efficiency.

The baghouse includes a baghouse and a baghouse, and the baghouse is installed above the baghouse. The bag filter is a highly efficient dry dust collector. It is a filter bag made of fiber filter material, and more importantly, it purifies the gas through the dust layer formed on the surface of the filter bag. It has a wide range of applications and high dust removal efficiency, which can reach more than 99%.

The cross section of the settling chamber and the bag-type dust removal chamber is a rectangle above, and an inverted cone below, and the bottom of the inverted cone is arc-shaped. The inverted cone and arc-shaped design of the lower part can use the gravity of the dust itself to automatically collect it on the running route of the auger without additional power.

The dust filter plate is provided with a number of through holes, and the dust filter plates used in the same group, the pore diameter of the dust filter plate decreases successively in the direction from the settling chamber to the baghouse. Design dust filter plates with different apertures according to the dust content in the dusty exhaust gas, so that the dust filter plates have a higher settling effect without clogging.

An ultrasonic vibrator is installed inside the dust filter plate. After a long period of settlement, dust is easy to accumulate on the dust filter plate. If it is shut down for cleaning, it will cause a lot of losses. Installing an ultrasonic vibrator can automatically clean the dust filter plate and prolong the service life of the dust filter plate.

Electrostatic dust removal rods are installed in the settling chamber. The dust-containing gas is electrically separated when it passes through a high-voltage electrostatic field. After the dust particles are combined with negative ions and charged with negative charges, they tend to discharge and deposit on the surface of the anode. It has the characteristics of high dust removal efficiency, wide particle size range and simple structure.

The beneficial effects of the utility model are:

(1) The utility model solves the problem of serious dust in the air during the fertilizer production process;

(2) The utility model improves the production environment, reduces the number of sanitation cleaning, saves labor, reduces the labor intensity of workers and ensures the health and safety of workers;

(3) The utility model reclaims a large amount of dust that can be added back as raw materials, which reduces the production cost.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model;

Fig. 2 is the structural representation of the settling chamber of the present utility model;

Fig. 3 is a schematic structural view of the bag-type dust removal chamber of the present invention;

Fig. 4 is the schematic diagram of the section structure of the settling chamber of the present utility model;

Among them, 1. Settling chamber, 2. Auger, 3. Dust cleaning port, 4. Baghouse, 5. Induced fan, 6. Exhaust pipe, 7. Air duct, 8. Air inlet, 11. First Settling chamber, 12, dust filter plate, 13, second settling chamber, 14, third settling chamber, 41, bag settling chamber, 42, bag filter.

Detailed ways:

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figure 1, a dust removal device for chemical fertilizer production includes a settling chamber 1, an auger 2, a bag-type dust removal chamber 4 and an induced draft fan 5; the top of the left side of the settling chamber 1 is provided with an air inlet connected to a dusty tail gas pipeline 8. The dust-containing tail gas enters the settling chamber 1 and settles. The settled dust falls to the bottom of the settling chamber 1. The interior of the settling chamber 1 is connected with the bag filter chamber 4. Most of the dust is eliminated through the settling chamber 1 and enters the bag. After the bag type dust removal chamber 4, the dust settles again and falls to the bottom of the bag type dust removal chamber 4. The auger 2 is located below the settling chamber 1 and the baghouse 4 and runs through the settling chamber 1 and the baghouse 4. The tail ends of the settling chamber 1 and the baghouse 4 are respectively provided with a dust cleaning port 3. With the rotation of the dragon 2, the helical blades on the auger 2 push the dust to reach the dust removal port 3, and the dust removal port 3 is connected with the waste recycling bin, and the dust falls into the waste bin. The outlet of the baghouse 4 is connected with the induced draft fan 5 through the air passage 7, so as to provide power for the dusty tail gas. The dusty tail gas after the final treatment is discharged through the exhaust pipe 6 .

As shown in FIG. 2 , the settling chamber 1 includes a first settling chamber 11 , a second settling chamber 13 , a third settling chamber 14 and a dust filter plate 12 , which are divided into three stages and separated by the dust filter plate 12 . The settling chamber 1 is a cuboid with a cavity structure inside, and from left to right there are first settling chamber 11 , second settling chamber 13 and third settling chamber 14 . Two adjacent settling chambers 1 are separated by a dust filter plate 12 . For the dust filter plates 12 used in the same group, the pore diameters of the dust filter plates decrease successively in the direction from the settling chamber to the baghouse, and after the dust-laden tail gas enters the settling chamber 1, it passes through the first, second, and third settling chambers in sequence. After being blocked by the dust filter plate 12, most of the dust falls to the bottom of the settling chamber 1.

As an improvement, an electrostatic dust removal rod is installed in the settling chamber 1. The dust in the dusty tail gas is prone to static electricity due to fast movement and high temperature, and is not easy to settle. After the electrostatic dust removal rod is installed, it will be electrically neutralized with the dust, and the dust will be accelerated. settlement.

As an improvement, an ultrasonic vibrator is installed inside the dust filter plate 12. When the dust filter plate 12 purifies the dusty exhaust gas, the ultrasonic vibrator vibrates to reduce the accumulation of dust on the dust filter plate 12, increase the service life of the dust filter plate 12, and prolong the dust filter. The life cycle of the board 12.

As shown in FIG. 3 , the baghouse 4 is divided into upper and lower parts, which are respectively a baghouse 42 and a baghouse 41 . The dust-laden tail gas enters the bag filter chamber 4 after being filtered by the settling chamber 1 , conducts short-term dust reduction in the bag filter chamber 41 , and enters the bag filter 42 for further dust removal.

As shown in Figure 4, the cross-section of the settling chamber 1 and the baghouse 4 is a rectangle at the top, an inverted cone at the bottom, and an arc-shaped bottom of the inverted cone, which fits well with the auger 2 for installation. The dust settled by the dusty tail gas falls to the bottom of the settling chamber 1 and the bag dust chamber 4, and then slides into the arc-shaped powder chute through the inverted conical bottom surface, and the rotation of the auger 2 pushes the dust-cleaning port of the powder movement. 3.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (7)

1. a chemical fertilizer production dust arrester, is characterized in that: comprise expansion chamber, auger, bag-type dusting room and air-introduced machine; Top on the left of expansion chamber is provided with and connects into gas port with dust-containing tail gas pipeline, expansion chamber inside is communicated with bag-type dusting room, auger be positioned at expansion chamber and bag-type dusting room below and through expansion chamber and bag-type dusting room, the tail end of expansion chamber and bag-type dusting room is respectively equipped with dedust port, the outlet of bag-type dusting room is connected with air-introduced machine by ventilating duct, and the outlet of air-introduced machine is connected with exhaust duct.

2. a kind of chemical fertilizer production dust arrester as claimed in claim 1, it is characterized in that: described expansion chamber comprises the first expansion chamber, the second expansion chamber, the 3rd expansion chamber and dust-filtering plate, expansion chamber is cuboid, inside is cavity structure, from left to right be followed successively by the first expansion chamber, the second expansion chamber and the 3rd expansion chamber, two adjacent expansion chamber dust-filtering plates separate.

3. a kind of chemical fertilizer production dust arrester as claimed in claim 1, is characterized in that: described bag-type dusting room comprises bag and sinks room and sack cleaner, and sack cleaner is arranged on bag and sinks the top of room.

4. a kind of chemical fertilizer production dust arrester as claimed in claim 3, it is characterized in that: be a rectangle above the cross section of described expansion chamber and bag-type dusting room, below is back taper, is circular arc bottom back taper.

5. a kind of chemical fertilizer production dust arrester as claimed in claim 2, is characterized in that: described dust-filtering plate is provided with some through holes, and the dust-filtering plate used with group, on the direction of expansion chamber to bag-type dusting room, dust-filtering plate aperture reduces successively.

6. a kind of chemical fertilizer production dust arrester as claimed in claim 2, is characterized in that: described dust-filtering plate inside is provided with ultrasonic vibrator.

7. a kind of chemical fertilizer production dust arrester as claimed in claim 1, is characterized in that: be provided with electrostatic precipitation rod in described expansion chamber.