CN113976540B - A dust removal device for cylindrical bags - Google Patents

Abstract

The invention discloses a dust removal device for cylindrical bags, which includes a dust collector main body and a clean air chamber sealing plate. The dust collector main body is divided into upper and lower independent clean air chambers and a dust-containing hopper; the clean air chamber sealing plate A plurality of bag air duct assemblies with upward-facing outlets are vertically provided on the bag air duct assembly, and a cylindrical dust bag is provided on the bag air duct assembly; the main body of the dust collector is also provided with a purified air outlet and a dust-containing air inlet. The upper part of the main body of the dust collector is fixedly provided with a backflush air supply bin, and a backflush air supply bin is provided with a backblowing fan; the air inlet end of the backflush air supply bin is connected to the clean air through a circulating air supply pipe room, the air outlet end of the backflush air supply bin is connected to a backflush assembly through an air supply duct, and the backflush assembly has a plurality of air outlets arranged one by one facing the outlet of the bag air duct assembly. The invention has the advantages of being able to avoid condensation, improving the dust removal effect and dust removal efficiency, and being conducive to extending the service life of the bag.

Description

A dust removal device for cylindrical bags

Technical field

The present invention relates to the technical field of bag dust removal, and in particular to a dust removal device for cylindrical bag dust.

Background technique

The bag dust collector is a new dust removal device that organically combines the cyclone dust removal mechanism and the filter dust removal mechanism and uses a special dust removal method. When working, the dust-laden airflow enters the dust collector tangentially and forms a cyclone in the dust collector. , large particles of dust are separated and fall into the ash hopper under the action of rotating centrifugal force, which plays the role of primary dust removal and prevents high-speed dust-laden airflow from directly washing the filter bag. The tiny dust particles are suspended in the gas and pass through the air flow distribution device, evenly entering the filter chamber, dispersed in the gaps between the filter bags and blocked by the filter bags. The purified air flow is discharged from the purified air outlet to complete the purification process. After the bag dust collector has been working for a period of time, a large amount of dust in the air will accumulate on the dust bag, causing the gaps on the dust bag to be blocked, affecting the filtration efficiency, and the dust on the bag needs to be cleaned.

At present, for cylindrical bags, compressed air is usually blown toward the outlet at the top of the bag to blow off the dust deposited on the surface of the bag. However, the temperature difference between the compressed air and the dust removal gas is large, which easily causes condensation. The deposited dust adhering to the bag under the action of condensation will aggravate the blockage, affect the dust removal efficiency, and shorten the service life of the bag.

Contents of the invention

In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide a dust removal device for cylindrical bags that can avoid condensation, improve dust removal effect and efficiency, and extend the service life of the bag.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

A dust removal device for cylindrical bags, including a dust collector body. The dust collector body has a horizontally arranged clean air chamber sealing plate. The clean air chamber sealing plate separates the dust collector body into upper and lower independent clean air chambers. chamber and dust-containing hopper; the sealing plate of the clean air chamber is vertically provided with a plurality of bag air duct assemblies with upward outlets, and the bag air duct assembly is provided with cylindrical dust removal bags; the dust collector The main body is also provided with a purified gas outlet and a dust-containing gas inlet, the purified gas outlet is connected to the clean air chamber, and the dust-containing gas inlet is connected to the dust-containing hopper; characterized in that, The upper part of the main body of the dust collector is fixed with a backflush air supply bin, and a backflush fan is provided in the backflush air supply bin; the air inlet end of the backflush air supply bin is connected to the clean air chamber through a circulating air supply pipe. The air outlet end of the backflush air supply chamber is connected to a backflush assembly through an air supply duct. The backflush assembly has a plurality of air outlets arranged one by one facing the outlet of the bag air duct assembly.

Using the above structure, the dust-containing gas enters the interior of the dust-containing hopper through the dust-containing gas inlet, and enters the separated clean air chamber through the bag air duct assembly. When passing through the dust removal bag on the bag air duct assembly, the dust is removed Under the obstruction of the bag, the dust falls into the inside of the hopper, or adheres to the surface of the dust bag, thereby realizing the dust removal of the dust-containing gas, and the clean gas is discharged through the purification gas outlet. When too much dust is deposited on the surface of the dust bag, start the backblowing fan in the backflush air supply chamber to suck the clean air in the clean air chamber and blow it into the backflush component through the air supply duct, and then through the outlet of the backflush component. The air outlet is facing the outlet of the bag air duct assembly and blows backwards into the dust bag. On the one hand, it can shake the bag and shake off the dust attached to the surface of the dust bag. On the other hand, the back-blow gas flows outward from the inside of the dust bag. , will also blow off the attached dust, thereby cleaning the bag. At the same time, the air in the backflush air supply chamber comes from the clean air chamber, and its temperature and water vapor content are consistent with the dust-containing gas. This can avoid condensation caused by the encounter between the backflush gas and dust-containing gas, thus preventing dust from adhering to moisture. , which is conducive to improving the dust removal effect and efficiency, and extending the service life of the bag.

Furthermore, the main body of the dust collector also has a horizontally arranged air duct support frame, and the lower end of the bag air duct assembly is fixed on the air duct support frame.

In this way, the bag air duct assembly can be fixed more reliably, and the bag air duct assembly can be prevented from being damaged by the overall swing under the action of dust-containing gas and backflush gas, which is beneficial to improving stability and service life. In addition, the gap between the bag air duct components can also be ensured, so as to better and fully utilize the surface area of the dust bag and improve the filtration efficiency.

Further, a plurality of upper air duct fixing holes are provided on the sealing plate of the clean air chamber, and the air duct support frame includes a plurality of lower air duct fixing rings arranged in one-to-one correspondence with the upper air duct fixing holes. The lower air duct is The fixed ring and the upper air duct fixing hole are coaxially arranged vertically, and a skeleton support arm is connected between multiple lower air duct fixing rings; the upper end and the lower end of the bag air duct assembly are respectively connected to the upper air duct fixed hole and downwinder fixing ring.

Further, the bag air duct assembly includes an upper fixing ring of the air duct and a lower fixing ring of the air duct. The upper fixing ring of the air duct is provided with an upper thread of the air duct, and the lower fixing ring of the air duct is provided with a lower thread of the air duct. The upper air cylinder fixing hole and the lower air cylinder fixing ring are both provided with internal threads. The upper threads of the air cylinder are connected to the upper air cylinder fixing hole by threading, and the lower threads of the air cylinder are fixed to the lower air cylinder. The rings are connected by screw threads.

The upper fixing ring of the air duct on the bag air duct assembly is connected to the upper air duct fixing hole on the sealing plate of the clean air chamber through screw threads, and the lower fixing ring of the air duct on the bag air duct assembly is connected to the lower air duct on the air duct support frame. The fixed ring is connected by screw threads and has a simple structure. When the dust bag is damaged, the dust bag can be replaced by rotating down the bag air duct assembly and then the bag air duct assembly can be installed. The structure is simple and is convenient for later maintenance and replacement. Reduce later maintenance costs.

Further, a cylindrical bag support frame is coaxially provided on the upper fixed ring of the air duct, and the dust removal bag is sleeved on the bag support frame from bottom to upward; the inner diameter of the lower fixed ring of the air duct is Match the diameter of the dust bag set on the bag support frame, so that the bag support frame set with the dust bag can stably pass through the lower fixing ring of the air duct.

When installing, screw the lower fixing ring of the air duct to the lower fixing ring of the air duct through the lower thread of the air duct. Set the dust bag on the bag support frame and pass it through the upper air duct fixing hole and the lower part of the air duct from top to bottom. After tightening the ring, screw the upper fixing ring of the air duct to the fixing hole of the upper air duct to complete the installation of the bag air duct assembly.

Further, the top of the main body of the dust collector is fixedly provided with a fan bin fixing plate, the backflush air supply bin is fixed on the fan bin fixing plate through bolts, and the backflush fan is arranged on the backflush air supply bin. Inside.

Further, the backflush assembly includes a backflush assembly fixed plate. One side of the backflush assembly fixed plate is provided with a backflush assembly connecting tube, and the other side is provided with a plurality of air blower components corresponding to the bag air duct assembly. A backflush assembly air outlet, the backflush assembly fixed plate also has a channel connecting the backflush assembly connecting barrel and the backflush assembly air outlet; the backflushing assembly connecting barrel and the air supply air The pipes are connected, and the air outlet of the back-blowing assembly is coaxially opposite to the corresponding dust bag.

Further, a limited sealing block is fixedly provided at the connection between the inner surface of the dust collector body and the clean air chamber sealing plate, and the clean air chamber sealing plate is clamped inside the limited sealing block. Sealing pads are provided on both sides of the clean air chamber sealing plate.

Further, the bottom of the dust-containing hopper is connected to a dust discharge tube, the dust-containing hopper is connected with the dust discharge tube, and the dust discharge tube is provided with a discharge valve, and the dust discharge tube is provided with a discharge valve. The material valve is provided with a rotating handle.

Further, a plurality of main body support columns are fixedly provided at the bottom of the main body of the dust collector, a support column base is fixedly provided at the bottom of the main body support column, and an anti-slip pad is fixedly provided on the bottom side of the support column base.

To sum up, the present invention has the advantages of being able to avoid condensation, improving the dust removal effect and dust removal efficiency, and being conducive to extending the service life of the cloth bag.

Description of the drawings

The drawings described here are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the attached picture:

Figure 1 is a connection structural diagram of a bag air duct assembly in an embodiment of the present invention (only part of the structure is shown in the figure).

Figure 2 is an internal structural diagram of an embodiment of the present invention.

Figure 3 is a perspective view of an embodiment of the present invention.

Figure 4 is a perspective view of the backflush assembly in the embodiment of the present invention.

Figure 5 is a perspective view of the bag air duct assembly in the embodiment of the present invention.

Figure 6 is a perspective view of a stroke support frame according to an embodiment of the present invention.

Figure 7 is a perspective view of the sealing plate of the clean air chamber in the embodiment of the present invention.

Figure 8 is a schematic cross-sectional structural view of the lower fixing ring of the stroke according to the embodiment of the present invention.

Figures 9 and 10 are enlarged structural diagrams of the circles in Figure 1.

Detailed ways

The present invention will be further described in detail below with reference to examples.

Specific implementation: a cylindrical bag dust removal device, including a dust collector main body 1, as shown in Figure 3, the bottom of the dust collector main body 1 is fixedly provided with several main body support columns 12, and the main body support columns 12 are A support column base 13 is fixedly provided at the bottom, and an anti-slip pad is fixedly provided on the bottom side of the support column base 13 .

As shown in Figure 2, the dust collector body 1 has a horizontally arranged clean air chamber sealing plate 3, and a limited seal is fixedly provided at the connection between the inner side of the dust collector body 1 and the clean air chamber sealing plate 3. Block 104, the clean air chamber sealing plate 3 is clamped inside the limit sealing block 104, the clean air chamber sealing plate 3 separates the dust collector body 1 into an upper and lower independent clean air chamber 101 and a Dust dropping hopper 102; the bottom of the dust dropping hopper 102 is connected to a dust discharge tube 9, and the dust dropping hopper 102 is connected with the dust discharge tube 9. As shown in Figure 3, the dust discharge tube 9 is provided with a discharge valve 11, and the discharge valve 11 is provided with a rotating handle.

As shown in Figures 1 and 2, the clean air chamber sealing plate 3 is vertically provided with a plurality of bag air duct assemblies 4 with upward outlets, and the bag air duct assembly 4 is provided with cylindrical dust removal bags. 401; The main body 1 of the dust collector is also provided with a purified gas outlet 7 and a dust-containing gas inlet 8. The purified gas outlet 7 is connected with the clean air chamber 101, and the dust-contained gas inlet 8 is connected with the dust-containing gas inlet 8. The dust hopper 102 is connected.

During operation, the dust-containing gas enters the interior of the dust-containing hopper through the dust-containing gas inlet, and enters the separated clean air chamber through the bag air duct assembly. When passing through the dust removal bag on the bag air duct assembly, the dust is in the dust removal bag. It falls into the inside of the dust-containing hopper under the influence of obstacles, or adheres to the surface of the dust bag, thereby realizing the dust removal of dust-containing gas, and the clean gas is discharged through the purification gas outlet.

In the traditional back-flush bag dust collector, compressed air is often used to back-flush the bag. The strong gas pressure and impact force of the compressed air are used to shake off the dust on the surface of the dust bag or blow it off from the inside to the outside. Although the instantaneous impact of strong gas pressure can effectively remove dust deposited on the surface of the bag, excessive impact can also cause damage and rupture of the dust bag. At the same time, compressed air is usually transported by a high-pressure gas storage tank. When the compressed air is sprayed out, the volume of the gas will increase, thereby reducing the temperature of the gas. The low-temperature compressed gas and the relatively high-temperature bag (the temperature of the bag is related to the dust content When the gas temperature is similar), condensation will condense on the bag and form water droplets. After the water droplets come into contact with the dust on the surface of the bag, a mud with stronger viscosity will form and penetrate into the gaps of the bag, blocking the filter holes (gaps) of the bag. And it should not be removed, which will seriously affect the filtration efficiency and service life.

To this end, in this embodiment, as shown in Figures 2 and 3, the upper part of the dust collector body 1 is fixedly provided with a backflush air supply bin 6, and a backblowing fan is installed in the backflush air supply bin 6; The air inlet end of the backflush air supply bin 6 is connected to the clean air chamber 101 through the circulating air supply pipe 10, and the air outlet end of the backflush air supply bin 6 is connected to the backflush assembly 5 through the air supply duct 601. The backflush assembly 5 has a plurality of air outlets arranged one by one facing the outlet of the bag air duct assembly 4 .

When too much dust is deposited on the surface of the dust bag, start the backblowing fan in the backflush air supply chamber to suck the clean air in the clean air chamber and blow it into the backflush component through the air supply duct, and then through the outlet of the backflush component. The air outlet is facing the outlet of the bag air duct assembly and blows backwards into the dust bag. On the one hand, it can shake the bag and shake off the dust attached to the surface of the dust bag. On the other hand, the back-blow gas flows outward from the inside of the dust bag. , will also blow off the attached dust, thereby cleaning the bag. At the same time, the air in the backflush air supply chamber comes from the clean air chamber, and its temperature and water vapor content are consistent with the dust-containing gas. This can avoid condensation caused by the encounter between the backflush gas and dust-containing gas, thus preventing dust from adhering to moisture. , which is conducive to improving the dust removal effect and efficiency, and extending the service life of the bag.

In this embodiment, a fan compartment fixing plate 103 is fixed on the top of the dust collector body 1, and the backflush air supply compartment 6 is fixed on the fan compartment fixing plate 103 through bolts, and the backblowing fan is installed there. The backflush air supply chamber 6 is described.

As shown in Figure 4, the backflush assembly 5 includes a backflush assembly fixed plate 502. One side of the backflush assembly fixed plate 502 is provided with a backflush assembly connecting tube 501, and the other side is provided with multiple The back-blowing assembly air outlet 503 corresponding to the bag air duct assembly 4 has a channel connecting the back-blowing assembly connecting barrel 501 and the back-blowing assembly air outlet 503 on the back-blowing assembly fixing plate 502; The backflush assembly connecting tube 501 is connected with the air supply air duct 601, and the backflush assembly air outlet tube 503 is coaxially opposite to the corresponding dust removal bag 401.

In addition, only the upper end of the circular bag in the existing bag dust removal device is fixed, that is, it is installed vertically on the sealing plate 3 of the clean air chamber. Since the lower end of the dust bag hangs for a long time, the dust-containing gas enters the dust hopper 102 or the compressed air. When the dust bag is back-flushed, it will cause the dust bag to shake. Although this shaking can slow down the deposition of dust on the surface of the dust bag to a certain extent, long-term shaking or shaking can easily cause fatigue damage and affect the durability of the dust bag and its supporting devices. service life.

To this end, in this embodiment, a horizontal air duct support frame 2 is further provided in the main body 1 of the dust collector, and the lower end of the bag air duct assembly 4 is fixed on the air duct support frame 2 .

In this way, by fixing the upper end (clean air chamber sealing plate 3) and the lower end (air duct support frame 2) of the bag air duct assembly, the stability of the bag air duct assembly can be increased and the bag air duct assembly can be prevented from being damaged by dust-containing gas and Under the action of backflush gas, the whole unit swings and is damaged, which is beneficial to improving the service life. In addition, the fixed dust bags are parallel to each other, so that there is enough space between the dust bags, and the surface area of the dust bags is fully exposed in the dust hopper 102, ensuring a sufficient filtration area and improving the filtration efficiency.

Specifically, as shown in Figures 6 and 7, the clean air chamber sealing plate 3 is provided with a plurality of upper air duct fixing holes 301; the air duct support frame 2 includes a plurality of upper air duct fixing holes 301 one by one. There is a corresponding downwind tube fixing ring 202. The downwind tube fixing ring 202 and the updraft tube fixing hole 301 are vertically coaxially arranged. A skeleton support arm 201 is connected between the plurality of downdraft tube fixing rings 202; The upper end and lower end of the bag air duct assembly 4 are respectively connected to the upper air duct fixing hole 301 and the lower air duct fixing ring 202.

During implementation, as shown in Figure 5, the bag air duct assembly 4 includes an upper air duct fixing ring 402 and a lower air duct fixing ring 403. The upper air duct fixing ring 402 has an upper air duct thread 404. The air duct is The lower fixing ring 403 is provided with a lower thread 405 of the air duct. The upper air duct fixing hole 301 and the lower air duct fixing ring 202 both have internal threads. The upper thread 404 of the air duct passes through the upper air duct fixing hole 301. The lower thread 405 of the air duct is connected to the fixed ring 202 of the lower air duct through a screw thread connection.

The upper fixing ring of the air duct on the bag air duct assembly is connected to the upper air duct fixing hole on the sealing plate of the clean air chamber through screw threads, and the lower fixing ring of the air duct on the bag air duct assembly is connected to the lower air duct on the air duct support frame. The fixed ring is connected by screw threads and has a simple structure. When the dust bag is damaged, the dust bag can be replaced by rotating down the bag air duct assembly and then the bag air duct assembly can be installed. The structure is simple and is convenient for later maintenance and replacement. Reduce later maintenance costs.

In order to facilitate the replacement of dust removal bags, in this embodiment, a cylindrical bag support frame is coaxially provided on the upper fixed ring 402 of the air duct, and the dust removal bag 401 is sleeved on the bag support frame from bottom to top. ; The inner diameter of the lower fixing ring 403 of the air duct matches the diameter of the dust bag set on the bag support frame, so that the bag support frame with the dust bag can stably pass through the lower fixing ring of the air duct. 403.

When replacing the dust bag, unscrew the upper fixing ring 402 of the air duct from the upper fixing hole 301 of the air duct, and then connect the upper fixing ring of the air duct to the bag support frame and pull it out from the lower fixing ring 403 of the air duct and the fixing hole 301 of the upper air duct. Remove the damaged dust bag from the bag support frame and replace it with a new dust bag. Connect the upper fixing ring of the air duct to the bag support frame and the dust bag from top to bottom through the upper fixing hole of the air duct and the lower fixing ring of the air duct. Finally, screw the upper fixing ring of the air duct to the fixing hole of the upper air duct to complete the replacement and installation of the bag air duct assembly.

In actual use, since the dust removal bag is sewn with filter material, and the sewing accuracy is affected by many factors, it is impossible to achieve the accuracy of machining, which often causes deviations in the radial size of the dust removal bag. In order to ensure dust removal The bag can be successfully put on the bag support frame. The minimum inner diameter of the dust bag must be larger than the maximum diameter of the bag support frame. In this way, dust removal bags with different radial sizes will also have different radial sizes after being placed on the bag support frame.

In order to allow dust removal bags with different radial sizes along with the bag support frame to smoothly pass through the lower fixing ring of the air duct and be stabilized by the lower fixing ring of the air duct, the following structural improvements are also adopted in this embodiment:

As shown in Figure 8, the inner diameter of the lower fixed ring 403 of the air duct is larger than the maximum diameter of the dust bag set on the bag support frame, and an elastic rubber ring is installed on the inner hole of the lower fixed ring 403 of the air duct. 408, and the minimum inner diameter of the elastic rubber ring 408 matches the diameter of the bag support frame.

The minimum inner diameter of the elastic rubber ring 408 matches the diameter of the bag support frame, that is, when the dust bag is not set, the bag support frame can just pass through the elastic rubber ring 408 without allowing the elastic rubber ring 408 to be squeezed and deformed. . In this way, once the dust bag is put on, the dust bag and the bag support pass through the elastic rubber ring 408, and the elastic rubber ring 408 can be squeezed. The deformation ability of the elastic rubber ring 408 can be used to satisfy dust bag bags with different radial sizes. The dust bag and bag support frame can be reliably fixed in the lower fixing ring of the air duct.

In order to make the elastic rubber ring 408 deform better, specifically, the elastic rubber ring 408 includes a rubber ring clamped on the lower fixing ring 403 of the hair dryer, and the rubber ring has a radially inwardly extending Rubber sheets, multiple rubber sheets are evenly spaced along the circumferential direction, and the rubber sheets are arranged perpendicular to the axial direction of the rubber ring.

In this way, the rubber pieces are arranged at circumferential intervals so that each rubber piece can independently bend and deform in the axial direction of the rubber ring, so that the dust bag and the bag support can pass through more easily.

Specifically, in order to enhance the support strength of the rubber sheet, the following methods can be used to strengthen it:

1. Set multiple elastic rubber rings 408 on the lower fixed ring of the hair dryer or set multiple layers of the rubber sheets in the axial direction of the rubber ring.

2. The thickness of the rubber sheet gradually becomes smaller in the direction away from the rubber ring. In this way, as the deformation amount of the rubber sheet in the axial direction increases, the thickness of the deformation point of the rubber sheet becomes larger, and the supporting force becomes stronger.

In this embodiment, after the dust removal bag and the bag support frame pass through the lower fixed ring of the air duct, they also need to rotate together with the upper fixed ring of the air duct. In order to avoid the relative friction between the dust removal bag and the lower fixed ring of the air duct during the rotation process If damaged, a rotatable inner sleeve 407 is also installed on the inner hole of the lower fixed ring 403 of the hair dryer, and the elastic rubber ring 408 is installed on the inner sleeve 407.

In this way, the dust bag cover is installed on the bag support frame and passes through the elastic rubber ring 408. When the fixed ring on the air duct is screwed together, the elastic rubber ring 408 and the inner sleeve 407 can be driven to rotate together to prevent the elastic rubber ring 408 from being The dust bag is damaged due to relative friction during its rotation.

In this embodiment, the inner sleeve 407 is coaxially installed on the inner hole of the lower fixing ring 403 of the hair dryer through a ball sleeve 406. Of course, bearings or bearing bushes can also be used instead of the ball sleeve 406.

As shown in Figure 2, in order to allow the dust-containing gas to enter the clean air chamber smoothly after being filtered by the dust bag, the air outlets of the backflush assembly 5 are arranged at intervals above the outlets of the corresponding bag air duct assembly 4.

Although this structure allows the filtered purified air to quickly enter the clean air chamber, it also provides an escape space for the backflush air blown out of the air outlet of the backflush component. In the traditional back-flush bag dust collector, the compressed air has greater pressure and impact force under the energy storage of the compressed air storage tank, which allows the back-flush gas to quickly pass through the gap between the two and enter the dust bag. Perform backflush cleaning. However, in this embodiment, in order to avoid the occurrence of condensation, purified air is extracted through a back blower for back blowing. Although the purified air can increase the pressure under the action of the back blow blower, the pressure is still lower than the pressure of the compressed air. Very small. Considering that during the backflush process, dust-containing gas still enters the main body of the dust collector and enters the dust bag from outside the dust bag. That is, the outlet of the dust bag has an outward air flow, which hinders the backflush air from entering the dust bag, increasing the This increases the probability of the backflush air flowing away (escaping) from the gap between the air outlet of the backflush assembly 5 and the bag air duct assembly 4 .

To this end, in this embodiment, an air guide duct assembly 14 is provided between the air outlet of the backflush assembly 5 and the outlet of the bag air duct assembly 4. The air guide duct assembly 14 includes a The air guide sleeve 141 of the air outlet of the blower assembly 5 and the outlet of the bag air duct assembly 4 and the driving mechanism for driving the air guide sleeve 141 to switch between the conductive and open states.

During back-blowing, the driving mechanism connects the air guide sleeve to the air outlet of the back-blow assembly 5 and the outlet of the bag air duct assembly 4, so that the back-blow air can directly enter the dust bag through the air guide sleeve, and all the back-blow air can be blown. Put it into the dust bag, and back-blow the dust bag to clean the dust, which will help improve the dust cleaning effect. During filtering, the air guide sleeve 141 is switched to the open state through the driving mechanism, so that the purified air from the outlet of the dust bag can smoothly enter the purification room to complete the purification and filtration.

In this embodiment, the air guide sleeve 141 is axially movably mounted on the outlet of the bag air duct assembly 4; the driving mechanism is used to drive the air guide sleeve 141 to move axially to the conductive connection. Between the air outlet of the backflush assembly 5 and the outlet of the bag air duct assembly 4 .

Of course, during specific implementation, the air guide sleeve 141 can also be axially movably set on the air outlet of the backflush assembly 5. However, in this embodiment, in order to make full use of the air guide sleeve 141 itself, Gravity switches the air guide sleeve to the open state, and it is more energy-saving to set the air guide sleeve 141 on the outlet of the bag air duct assembly 4.

In order to simplify the driving mechanism to save costs and facilitate the installation of the driving mechanism, in this embodiment, as shown in Figures 9 and 10, the upper end of the air guide sleeve 141 has an attraction ring made of magnetic material that can be attracted by magnets. 143. The driving mechanism includes a first annular electromagnet 142 arranged on the backflush assembly 5 , and the first annular electromagnet 142 is arranged directly opposite the gravitational ring 143 .

During backflushing, the first annular electromagnet 142 is energized and generates magnetic force. The gravitational ring 143 is attracted upward under the action of the magnetic force, driving the air guide sleeve to move upward to connect the air outlet of the backflush assembly 5 and the outlet of the bag air duct assembly 4 . During filtration, the first annular electromagnet 142 is powered off, and the gravitational ring 143 loses the attraction of the magnet and falls under the gravity of the air guide sleeve itself, so that the purified air can smoothly enter the purification room from the dust bag outlet.

In order to allow the gravitational ring 143 to be attracted by the first annular electromagnet 142 more reliably, the lower end of the air guide sleeve 141 also has permanent magnets 144 evenly distributed along the circumferential direction, and the magnetic poles of the permanent magnets 144 are oriented in the same direction; The outlet of the bag air duct assembly 4 also has a second annular electromagnet 145 corresponding to the permanent magnet 144. The second annular electromagnet 145 is located below the air guide sleeve 141 and connected with the permanent magnet 144. Close to each other; the magnetic poles of the second annular electromagnet 145 in the energized state are opposite to the magnetic poles of the permanent magnet 144 in the same direction.

During backflushing, the first annular electromagnet 142 and the second annular electromagnet 145 are energized at the same time, and the close permanent magnet 144 and the second annular electromagnet 145 repel each other, causing the air guide sleeve to move upward by one end distance and shortening the gravitational force at the same time. The distance between the ring 143 and the first annular electromagnet 142 enables the gravitational ring 143 to be better attracted by the first annular electromagnet 142 . During specific implementation, the first annular electromagnet 142 and the second annular electromagnet 145 are connected in parallel and powered on or off at the same time, so that the air guide sleeve can move up and down.

In order to improve the sealing between the air guide sleeve and the backflush assembly 5 , the bottom surface of the first annular electromagnet 142 or the surface of the attraction ring 143 is provided with a sealing gasket.

The principle of the cylindrical bag dust removal device provided in this embodiment is as follows:

An air duct support frame 2 and a clean air chamber sealing plate 3 are installed inside the dust collector body 1. Five bag air duct assemblies 4 are installed between the air duct support frame 2 and the clean air chamber sealing plate 3. The air duct is sealed in the clean air chamber. A clean air chamber 101 is formed between the plate 3 and the interior of the dust collector body 1. The dust-containing gas enters the interior of the dust-containing hopper through the dust-containing gas inlet, and enters the separated clean air chamber through the bag air duct assembly. When passing through the dust bag on the bag air duct assembly, the dust falls into the interior of the dust-containing hopper under the obstruction of the dust bag, or adheres to the surface of the dust bag, thereby realizing the dust removal of the dust-containing gas. The clean gas passes through the purified gas outlet. discharge.

During backflushing, as shown in Figure 10, the first annular electromagnet 142 and the second annular electromagnet 145 are energized, and the permanent magnet 144 at the lower end of the air guide sleeve drives the air guide sleeve under the repulsive force of the second annular electromagnet 145. By moving upward, the distance between the gravitational ring 143 at the top of the air guide sleeve and the first annular electromagnet 142 is shortened. Under the magnetic attraction of the first annular electromagnet 142, the gravitational ring 143 continues to drive the guide sleeve to move upward, and finally attracts the first annular electromagnet 142. An annular electromagnet 142 connects the air outlet of the backflush assembly 5 and the outlet of the bag air duct assembly 4 . Start the back-blowing fan to extract the purified air in the clean air chamber and send it to the back-blowing assembly 5. It will be blown back into the dust bag through the air outlet of the back-blowing assembly 5. On the one hand, it can shake the bag and remove the dust attached to the surface of the dust bag. The dust is shaken off. On the other hand, the backflush gas flows outward from the inside of the dust bag and will also blow off the attached dust, thereby cleaning the bag.

Since the air in the backflush air supply chamber comes from the clean air chamber, its temperature and water vapor content are consistent with the dust-containing gas, which can avoid condensation caused by the encounter between the backflush gas and the dust-containing gas, thereby preventing dust from adhering to moisture. It is helpful to improve the dust removal effect and dust removal efficiency and extend the service life of the bag.

It should be noted that the terms "includes", "includes" or any other variation thereof are intended to cover non-exclusive inclusion, such that a good or system including a list of elements includes not only those elements, but also those not expressly listed Other elements may also include elements inherent to the product or system. Without further limitation, an element qualified by the statement "includes a..." does not exclude the presence of other identical elements in the goods or systems that include the element.

The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various embodiments. other combinations, modifications and environments, and can be modified through the above teachings or technology or knowledge in related fields within the scope of the inventive concept described herein. Any modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present invention shall be within the protection scope of the appended claims of the present invention.

Claims (6)

1. The dust removing device of the cylindrical cloth bag comprises a dust remover main body (1), wherein a clean air chamber sealing plate (3) which is horizontally arranged is arranged in the dust remover main body (1), and the clean air chamber sealing plate (3) divides the dust remover main body (1) into an upper independent clean air chamber (101) and a lower independent dust-containing blanking hopper (102); a plurality of cloth bag air duct assemblies (4) with upward outlets are vertically arranged on the clean air chamber sealing plate (3), and a cylindrical dust removing cloth bag (401) is arranged on the cloth bag air duct assemblies (4); the dust remover main body (1) is also provided with a purified gas outlet (7) and a dust-containing gas inlet (8), the purified gas outlet (7) is communicated with the clean gas chamber (101), and the dust-containing gas inlet (8) is communicated with the dust-containing blanking hopper (102); the dust remover is characterized in that a back-blowing air supply bin (6) is fixedly arranged at the upper part of the dust remover main body (1), and a back-blowing blower is arranged in the back-blowing air supply bin (6); the air inlet end of the back-blowing air supply bin (6) is connected to the air purifying chamber (101) through a circulating air supply pipe (10), the air outlet end of the back-blowing air supply bin (6) is connected with a back-blowing assembly (5) through an air supply air pipe (601), and the back-blowing assembly (5) is provided with a plurality of air outlets which are opposite to the outlets of the cloth bag air duct assembly (4) one by one;

the dust remover main body (1) is internally provided with a horizontally arranged air duct supporting frame (2), and the lower end of the cloth bag air duct component (4) is fixed on the air duct supporting frame (2);

a plurality of upper air duct fixing holes (301) are formed in the air cleaning chamber sealing plate (3), the air duct supporting frame (2) comprises a plurality of lower air duct fixing rings (202) which are arranged in one-to-one correspondence with the upper air duct fixing holes (301), the lower air duct fixing rings (202) and the upper air duct fixing holes (301) are coaxially arranged in the vertical direction, and a framework supporting arm (201) is connected between the lower air duct fixing rings (202); the upper end and the lower end of the cloth bag air duct assembly (4) are respectively connected to the upper air duct fixing hole (301) and the lower air duct fixing ring (202);

the cloth bag air duct assembly (4) comprises an air duct upper fixing ring (402) and an air duct lower fixing ring (403), wherein an air duct upper thread (404) is arranged on the air duct upper fixing ring (402), an air duct lower thread (405) is arranged on the air duct lower fixing ring (403), inner threads are arranged on the upper air duct fixing hole (301) and the lower air duct fixing ring (202), the air duct upper thread (404) is in screwed connection with the upper air duct fixing hole (301) through threads, and the air duct lower thread (405) is in screwed connection with the lower air duct fixing ring (202) through threads;

a cylindrical cloth bag support frame is coaxially arranged on the upper fixing ring (402) of the air duct, and the dust removal cloth bag (401) is sleeved on the cloth bag support frame from bottom to top; the inner diameter of the air duct lower fixing ring (403) is matched with the diameter of the dust removing cloth bag sleeved on the cloth bag supporting frame, so that the cloth bag supporting frame sleeved with the dust removing cloth bag stably passes through the air duct lower fixing ring (403);

the inner diameter of the air duct lower fixing ring (403) is larger than the maximum diameter of a dust collection cloth bag sleeved on the cloth bag supporting frame, an elastic rubber ring (408) is arranged on the inner hole of the air duct lower fixing ring (403), and the minimum inner diameter of the elastic rubber ring (408) is matched with the diameter of the cloth bag supporting frame; a rotatable inner sleeve (407) is further arranged on the inner hole of the lower fixed ring (403) of the air duct, and the elastic rubber ring (408) is arranged on the inner sleeve (407); the inner sleeve (407) is coaxially arranged on the inner hole of the lower fixing ring (403) of the air duct through the ball bearing shaft sleeve (406).

2. The dust removal device of the cylindrical cloth bag according to claim 1, wherein a fan bin fixing plate (103) is fixedly arranged at the top of the dust remover main body (1), the back blowing air supply bin (6) is fixed on the fan bin fixing plate (103) through bolts, and the back blowing fan is arranged in the back blowing air supply bin (6).

3. The dust removal device of the cylindrical cloth bag according to claim 1, wherein the back-blowing component (5) comprises a back-blowing component fixing plate (502), one side of the back-blowing component fixing plate (502) is provided with a back-blowing component connecting cylinder (501), the other side of the back-blowing component fixing plate is provided with a plurality of back-blowing component air outlet cylinders (503) corresponding to the cloth bag air cylinder components (4), and the back-blowing component fixing plate (502) is also provided with channels for communicating the back-blowing component connecting cylinder (501) with the back-blowing component air outlet cylinders (503); the back-blowing component connecting cylinder (501) is communicated with the air supply pipe (601), and the back-blowing component air outlet cylinder (503) and the corresponding dust removing cloth bag (401) are coaxially and oppositely arranged.

4. The dust removal device of the cylindrical cloth bag according to claim 1, wherein a limit sealing block (104) is fixedly arranged at the joint of the inner side surface of the dust remover main body (1) and the clean air chamber sealing plate (3), the clean air chamber sealing plate (3) is clamped in the limit sealing block (104), and sealing gaskets are arranged on two side surfaces of the clean air chamber sealing plate (3).

5. The dust removing device of the cylindrical cloth bag according to claim 1, wherein the bottom of the dust-containing blanking hopper (102) is connected with a dust discharging cylinder (9), the dust-containing blanking hopper (102) is communicated with the dust discharging cylinder (9), a discharging valve (11) is arranged on the dust discharging cylinder (9), and a rotary handle is arranged on the discharging valve (11).

6. The dust collector of the cylindrical cloth bag of claim 1, wherein a plurality of main body support columns (12) are fixedly arranged at the bottom of the dust collector main body (1), support column bases (13) are fixedly arranged at the bottoms of the main body support columns (12), and anti-slip pads are fixedly arranged on the bottom side surfaces of the support column bases (13).