Dust removal ventilation device for electrically fused refractory brick powder tank

Abstract

The utility model belongs to granular material storage bin equipment technical field discloses a kind of electrically fused refractory brick powder tank dust removal ventilation device, including the ventilation pipe of one end connection in powder tank top end;The ventilation pipe other end is bent downward and forms the insertion tube portion of protruding coarse filter cartridge;The coarse filter cartridge upper and lower sides are respectively provided with exhaust pipe and discharge pipe;Multiple inner cone cover and multiple outer cone cover of vertical alternation arrangement are equipped in the coarse filter cartridge inside;The inner cone cover small end is upwards and is sealingly fixed with the insertion tube portion outer wall, its large end is downwards and has gap with the coarse filter cartridge inner wall;The outer cone cover large end is upwards and is sealingly fixed with the coarse filter cartridge inner wall, its small end is downwards and has gap with the insertion tube portion outer wall.The utility model includes three-stage filtration, can adapt to the powder tank environment of more dust, avoid dust overflow, and with self-cleaning function, save manpower, it is convenient and efficient.

Description

Technical Field

[0001] This utility model belongs to the technical field of granular material storage equipment, and relates to a dust removal and ventilation device for an electrofused refractory brick powder tank. Background Technology

[0002] The raw materials used in the production of fused refractory bricks include alumina powder, zirconium oxide (ZrO2), silicon dioxide (SiO2), zircon sand, and other granular materials. When these granular materials enter or exit the powder tank, air needs to be introduced or exhausted to maintain pressure balance; however, exhausting air causes dust to overflow. Traditional breather valves, some with filters to filter dust (e.g., patent CN220997777U, "A Dustproof Breathing Valve for Petrochemical Storage Tanks"), are prone to clogging due to the large amount of dust in the powder tanks. This necessitates frequent manual cleaning, which is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a dust removal and ventilation device for an electrofused refractory brick powder tank. The purpose is that, firstly, the filter component should be able to work continuously in a dusty working environment, and secondly, it should have a self-cleaning function to reduce manual cleaning, save manpower, and improve efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dust removal and ventilation device for an electrofused refractory brick powder tank, comprising a ventilation pipe connected at one end to the top of the powder tank; the ventilation pipe includes a vertical section connected at one end to the powder tank, and its other end bent downwards to form an insertion section, the insertion section extending into the interior of a coarse filter cylinder along its axis; the coarse filter cylinder is sealed and fixedly connected to the outer wall of the insertion section, its upper side wall is connected to an exhaust pipe, and its lower end is provided with a discharge pipe, the discharge pipe being provided with a valve; multiple inner cone hoods and multiple outer cone hoods are arranged vertically alternately inside the coarse filter cylinder; the small end of the inner cone hood faces upwards and is sealed and fixedly connected to the outer wall of the insertion section, its large end faces downwards and leaves a gap with the inner wall of the coarse filter cylinder; the large end of the outer cone hood faces upwards and is sealed and fixedly connected to the inner wall of the coarse filter cylinder, its small end faces downwards and leaves a gap with the outer wall of the insertion section; a first filter screen and a second filter screen are respectively provided in the vertical section and the exhaust pipe.

[0005] As a further optimization, the first filter screen has larger pores than the second filter screen.

[0006] As a further optimization, the exhaust pipe includes a vertical straight pipe section; the top end of the straight pipe section is connected to a horizontal pipe section, and its lower end is connected to an inclined pipe section, the end of the inclined pipe section is connected to the upper part of the coarse filter cartridge; the second filter screen is located in the straight pipe section.

[0007] As a further optimization, the lower end of the discharge pipe is inclined and connected to the lower part of the coarse filter cylinder.

[0008] As a further optimization, the valve is an electrically controlled slide gate valve.

[0009] As a further optimization, the coarse filter cartridge is fixed to the upper side wall of the powder tank by a bracket.

[0010] Compared with the prior art, the beneficial effects of this utility model are: this utility model includes a three-stage filtration system, which can adapt to the environment of powder tanks with a lot of dust, prevent dust from overflowing, and has a self-cleaning function, saving manpower and being convenient and efficient. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0012] Figure 2 This is a three-dimensional structural diagram of the interior of the coarse filter cartridge in Embodiment 1 of this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0014] The correspondence between the technical features in the figure and the reference numerals is as follows: powder tank 1; support 11; vent pipe 2; vertical part 21; insertion part 22; first filter screen 23; coarse filter cylinder 3; inner cone shroud 31; outer cone shroud 32; exhaust pipe 4; second filter screen 41; straight pipe part 42; horizontal pipe part 43; inclined pipe part 44; discharge pipe 5; valve 51. The dotted lines in the figure indicate the tortuous airflow direction inside the coarse filter cylinder. Detailed Implementation

[0015] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some preferred embodiments of this utility model, and not all embodiments. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model, and are not intended to limit the protection scope of this utility model.

[0016] Example: Please refer to Figure 1-2This utility model provides the following technical solution: a dust removal and ventilation device for an electrofused refractory brick powder tank, comprising a ventilation pipe 2 connected at one end to the top of the powder tank 1; the ventilation pipe 2 includes a vertical part 21 connected at one end to the powder tank 1, and its other end bent downward to form an insertion part 22, the insertion part 22 extending into the interior of a coarse filter cylinder 3 along its axis; the coarse filter cylinder 3 is sealed and fixedly connected to the outer wall of the insertion part 22, its upper side wall is connected to an exhaust pipe 4, and its lower end is provided with a discharge pipe 5, the discharge pipe 5 being provided with... Valve 51; multiple inner cone shrouds 31 and multiple outer cone shrouds 32 are arranged vertically alternately inside the coarse filter cylinder 3; the small end of the inner cone shroud 31 faces upward and is sealed and fixed to the outer wall of the insertion tube 22, and its large end faces downward and leaves a gap with the inner wall of the coarse filter cylinder 3; the large end of the outer cone shroud 32 faces upward and is sealed and fixed to the inner wall of the coarse filter cylinder 3, and its small end faces downward and leaves a gap with the outer wall of the insertion tube 22; a first filter screen 23 and a second filter screen 41 are respectively provided in the vertical part 21 and the exhaust pipe 4.

[0017] In use, when granular material is injected into the powder tank 1, its internal pressure increases. The airflow flows sequentially through the vertical section 21, the first filter screen 23, and the insertion tube 22 before entering the bottom of the coarse filter cylinder 3. The airflow then flows upwards sequentially through multiple alternating inner cones 31 and outer cones 32, causing the airflow to rise in a meandering pattern before finally exiting from the exhaust pipe 4. The dust carried by the airflow is first filtered by the first filter screen 23, serving as the first filtration step. Then, in the coarse filter cylinder 3, due to the meandering upward flow of the airflow, dust particles lose kinetic energy and fall upon colliding with the inner and outer cones 31 and 32. Furthermore, a vortex forms in the area between the inner and outer cones 31 and 32, increasing the probability of dust particles colliding with them and preventing them from rising, thus serving as the second filtration step. Finally, when the airflow exits from the exhaust pipe 4, it passes through the second filter screen 41, serving as the third filtration step. Meanwhile, since both the inner cone shroud 31 and the outer cone shroud 32 are fixed at one end and downward at the other, dust particles on their surfaces can automatically slide downward and finally fall into the discharge pipe 5 at the bottom of the coarse filter cartridge 3. Preferably, a vibration device is installed on the side wall of the coarse filter cartridge 3 to cause the coarse filter cartridge 3 and the insertion tube 22 to vibrate, accelerating the dust falling. When there is no airflow, the valve 51 can be opened periodically to clean the accumulated dust particles. Conversely, when the powder tank 1 discharges particulate material, its internal pressure decreases, and the airflow flows sequentially through the exhaust pipe 4, the second filter screen 41, the coarse filter cartridge 3, the insertion tube 22, the vertical part 21, and the first filter screen 23 before entering the powder tank 1; at this time, the external air can backflush the first filter screen 23 and the second filter screen 41 to clear the blocked filter holes, playing a role in filter screen regeneration. Furthermore, the dust from backflushing the first filter screen 23 and the second filter screen 41 can fall into the powder tank 1 and the coarse filter cartridge 3 respectively for recollection, avoiding disorderly discharge.

[0018] Based on this, the device includes a three-stage filtration system to prevent dust from overflowing from the powder tank 1. The coarse filter cartridge 3 reduces the filtration load on the second filter screen 41, preventing clogging, and allows for an increase in the pore size of the first filter screen 23. The first filter screen 23 has high air permeability and a low probability of clogging. Therefore, preferably, the pore size of the first filter screen 23 is larger than that of the second filter screen 41. During backflushing, both filters can be automatically regenerated, reducing manual cleaning, saving manpower, and improving efficiency. Therefore, this device can adapt to the dusty environment of the powder tank 1, providing long-term ventilation for the powder tank 1, and has a self-cleaning function, making it convenient and efficient.

[0019] To facilitate the return of dust particles in the exhaust pipe 4, the exhaust pipe 4 includes a vertical straight pipe section 42; the top end of the straight pipe section 42 is connected to a horizontal pipe section 43, and its lower end is connected to an inclined pipe section 44, the end of which communicates with the coarse filter cartridge 3; the second filter screen 41 is located in the straight pipe section 42. Therefore, the filtering surfaces of both the first filter screen 23 and the second filter screen 41 face downwards, which also facilitates the automatic falling of dust. Dust falling from the second filter screen 41 can fall into the coarse filter cartridge 3 through the inclined pipe section 44.

[0020] Example 2, please refer to Figure 2-3 .

[0021] The difference between this embodiment and Embodiment 1 is that the lower end of the discharge pipe 5 is inclined and connected to the coarse filter cartridge 3; the dust accumulated in the discharge pipe 5 can be returned to the powder tank 1, avoiding waste. The valve 51 is an electrically controlled slide gate valve; this improves the level of automation, avoids manual operation of the valve 51, and also avoids personnel working at heights, making operation more convenient. The coarse filter cartridge 3 is fixed to the upper side wall of the powder tank 1 by the bracket 11, so that the device is integrated with the powder tank 1, which is convenient to manufacture, avoids high-altitude installation, and reduces costs.

[0022] The advantage of this embodiment is that personnel do not need to enter the storage silo 1, saving time and effort; the combination of scraping and sweeping can conveniently and efficiently remove dirt from the inner wall of the storage silo 1; and the drive motor 7 is located outside the storage silo 1, making maintenance and control convenient.

[0023] The parts of this utility model not described in detail are prior art; for those skilled in the art, the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust removal and ventilation device for an electrofused refractory brick powder hopper, comprising a ventilation pipe (2) with one end connected to the top of the powder hopper (1); characterized in that: The vent pipe (2) includes a vertical part (21) connected to the powder tank (1) at one end, and a tube part (22) bent downwards at the other end. The tube part (22) extends into the coarse filter cylinder (3) along its axis. The coarse filter cylinder (3) is sealed and fixed to the outer wall of the tube part (22). The upper side wall of the coarse filter cylinder (3) is connected to the exhaust pipe (4), and the lower end of the coarse filter cylinder (3) is provided with a discharge pipe (5). The discharge pipe (5) is provided with a valve (51). Inside the coarse filter cylinder (3), there are multiple vertically alternating inner cone shrouds (31) and multiple outer cone shrouds (32); the small end of the inner cone shroud (31) faces upward and is sealed and fixed to the outer wall of the insertion tube (22), and its large end faces downward and leaves a gap with the inner wall of the coarse filter cylinder (3); the large end of the outer cone shroud (32) faces upward and is sealed and fixed to the inner wall of the coarse filter cylinder (3), and its small end faces downward and leaves a gap with the outer wall of the insertion tube (22); The vertical section (21) and the exhaust pipe (4) are respectively provided with a first filter screen (23) and a second filter screen (41).

2. The dust removal and ventilation device for the electrofused refractory brick powder silo according to claim 1, characterized in that: The first filter (23) has larger pores than the second filter (41).

3. The dust removal and ventilation device for the electrofused refractory brick powder silo according to claim 1, characterized in that: The exhaust pipe (4) includes a vertical straight pipe section (42); the top end of the straight pipe section (42) is connected to a horizontal pipe section (43), and its lower end is connected to an inclined pipe section (44); the end of the inclined pipe section (44) is connected to the upper part of the coarse filter cylinder (3); the second filter screen (41) is located in the straight pipe section (42).

4. The dust removal and ventilation device for the electrofused refractory brick powder silo according to claim 1, characterized in that: The lower end of the discharge pipe (5) is inclined and connected to the lower part of the coarse filter cylinder (3).

5. The dust removal and ventilation device for the electrofused refractory brick powder silo according to claim 4, characterized in that: The valve (51) is an electrically controlled slide gate valve.

6. The dust removal and ventilation device for the electrofused refractory brick powder silo according to claim 1, characterized in that: The coarse filter cartridge (3) is fixed to the upper side wall of the powder tank (1) by a bracket (11).

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