Cloth bag type dust collector

Abstract

The utility model relates to the technical field of dust removers, and provides a cloth bag type dust remover, which comprises a dust bag and a shell integrally cast by a corrosion-resistant material, the shell comprises a dust removal cavity and a dust discharge hopper which are sequentially connected from top to bottom, a plurality of dust removal chambers are arranged in the dust removal cavity, a plurality of filter bags are fixed in the dust removal chambers, and the filter bags are arranged in the dust removal cavities. An air outlet and an air inlet are formed in the positions, corresponding to each dust removal chamber, of the dust removal cavity, the air outlets and the air inlets are communicated with the dust removal chambers respectively, first control valves are installed between the dust removal chambers and the air inlets, and the dust bag is communicated with the dust discharge hopper and used for collecting dust; the bag type dust collector solves the problem that the shell of the traditional bag type dust collector is easy to corrode, and has the advantages of simple structure and low manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of dust collectors, in particular to a bag-type dust collector. Background Art

[0002] Bag filter is a kind of dust collector equipment in dust collector. Bag filter is a dry dust filter. It is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt. The filter effect of fiber fabric is used to filter dust-containing gas. When the dust-containing gas enters the bag filter, the dust with large particles and high specific gravity settles down due to gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, so that the gas is purified. It has low cost and simple maintenance in the later stage. It is suitable for gas-dust separation of dust-containing gas in many industries such as food, grain, medicine, building materials, and chemical industry. The clean air filtered by the filter element in the filter device of the bag filter is discharged outside the machine.

[0003] In the prior art, for example, a bag-type dust collector disclosed in publication number CN104436907A includes a shell. Although the improvement of the shell enhances the sealing performance inside the shell, the shell still has defects. Since the shell of the bag-type dust collector is exposed to the outside for a long time, the degree of corrosion of the shell increases with the increase of usage time. Every once in a while, the shell often needs to be treated with anti-corrosion. In severe cases, it even needs to be replaced as a whole, which consumes a lot of manpower and material resources and increases production costs. Utility Model Content

[0004] Based on this, in order to solve the problem that the shell of the traditional bag-type dust collector is easily corroded, the utility model provides a bag-type dust collector, and its specific technical solution is as follows:

[0005] A bag-type dust collector comprises a dust bag and a shell integrally cast from a corrosion-resistant material, the shell comprising a dust removal chamber and a dust discharge hopper connected in sequence from top to bottom, a plurality of dust removal chambers are arranged in the dust removal chamber, a plurality of filter bags are fixed in the dust removal chamber, an air outlet and an air inlet are provided in the dust removal chamber at a position corresponding to each of the dust removal chambers, the air outlet and the air inlet are respectively connected to the dust removal chamber, a first control valve is installed between the dust removal chamber and the air inlet, the dust bag is connected to the dust discharge hopper and is used to collect dust.

[0006] The above-mentioned bag-type dust collector is provided with a shell, which is cast in one piece from a corrosion-resistant material and has strong anti-corrosion performance. It can increase the service life of the dust collector when the bag-type dust collector is exposed to the outside for a long time, and solves the problem that the shell of the traditional bag-type dust collector is easily corroded; by providing a dust removal chamber, when the gas to be dusted enters the dust removal chamber, due to the gravity of the dust, the coarse particles directly settle into the ash hopper under the action of gravity, and the remaining gas is evenly distributed in each filter bag, so that the gas can be filtered out of the remaining dust and then discharged through the air outlet; by providing a first control valve, the inlet and outlet state of the gas to be dusted is controlled, and when the dust on the surface of the filter bag accumulates to a certain degree and needs to be cleaned, the gas supply to the inside of the dust removal chamber is stopped in time.

[0007] Furthermore, the corrosion-resistant material is concrete or cement.

[0008] Furthermore, an air outlet duct and an air inlet duct are connected to the outer surface of the dust removal cavity, the air outlet duct is located above the air inlet duct, the air outlet duct cover is arranged on the multiple air outlets, and the air inlet duct cover is arranged on the multiple air inlets.

[0009] Furthermore, the shell also includes an exhaust chimney and an air intake duct connected to one side of the dust removal chamber. A cavity is opened in the dust removal chamber. Multiple dust removal chambers are arranged side by side in the cavity and are connected to each other. The air intake duct is connected to the cavity. The exhaust chimney is fixed on the top of the air intake duct and is connected to the air intake duct.

[0010] Furthermore, the bag-type dust collector also includes a blowing mechanism, which includes a second control valve, a fan and a blowing pipe connected to the air inlet pipe, the air outlet of the fan is connected to the blowing pipe, and the second control valve is installed at the connection between the fan and the blowing pipe.

[0011] Furthermore, the blowing mechanism also includes a control unit, and the control unit is electrically connected to the first control valve and the second control valve respectively.

[0012] Furthermore, the first control valve is a rotary airtight valve, and the second control valve is a pulse valve.

[0013] Furthermore, an ash discharge port is provided at the bottom of the ash discharge hopper, and a guide mechanism is provided on the ash discharge port. The guide mechanism includes a drive shaft, a spiral body and a guide pipe connected to the ash discharge port. A guide cavity for dust to pass through is formed inside the guide pipe. One end of the drive shaft extends into the guide cavity and can rotate relative to the guide pipe. The spiral body is wound around the outer surface of the drive shaft.

[0014] Furthermore, the guide mechanism also includes a drive motor, which is mounted on the guide pipe, and the output end of the drive motor is drivingly connected to the other end of the drive shaft.

[0015] Furthermore, the ash bag is provided with an ash collecting port, and the two sides of the guide pipe are respectively provided with an ash inlet and an ash outlet, the ash inlet is connected between the ash outlet and the guide cavity, and the ash outlet is connected between the guide cavity and the ash collecting port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a bag-type dust collector according to an embodiment of the utility model;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the bag-type dust collector in the AA direction according to an embodiment of the utility model;

[0018] Figure 3 yes Figure 2 Schematic diagram of the local structure of C;

[0019] Figure 4 It is a schematic cross-sectional structure diagram of the bag-type dust collector in the BB direction according to an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 1. Ash bag; 2. Shell; 21. Dust removal chamber; 211. Filter bag; 212. Air outlet; 213. Air inlet; 22. Ash hopper; 23. Air outlet duct; 24. Air inlet duct; 25. Exhaust chimney; 26. Air inlet duct; 3. Spraying mechanism; 31. Fan; 32. Spraying duct; 4. Guide mechanism; 41. Drive shaft; 42. Helix; 43. Guide duct; 44. Drive motor. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described here are only used to explain the utility model and do not limit the protection scope of the utility model.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, a bag-type dust collector in one embodiment of the utility model includes a dust bag 1 and a shell 2 integrally cast from a corrosion-resistant material, the shell 2 includes a dust removal chamber 21 and a dust discharge hopper 22 connected in sequence from top to bottom, a plurality of dust removal chambers are arranged in the dust removal chamber 21, a plurality of filter bags 211 are fixed in the dust removal chamber, an air outlet 212 and an air inlet 213 are opened at the position of each dust removal chamber in the dust removal chamber 21, the air outlet 212 and the air inlet 213 are respectively communicated with the dust removal chamber, a first control valve is installed between the dust removal chamber and the air inlet 213, the ash bag 1 is communicated with the dust discharge hopper 22 and is used to collect dust.

[0027] The above-mentioned bag-type dust collector is provided with a shell 2, which is cast in one piece from a corrosion-resistant material and has strong anti-corrosion performance. It can increase the service life of the dust collector when the bag-type dust collector is exposed to the outside for a long time, and solves the problem that the shell 2 of the traditional bag-type dust collector is easily corroded; by providing a dust removal chamber, when the gas to be dusted enters the dust removal chamber, due to the gravity of the dust, the coarse particles directly settle into the ash hopper 22 under the action of gravity, and the remaining gas is evenly distributed in each filter bag 211, so that the gas can be filtered out of the remaining dust and then discharged through the air outlet 212; by providing a first control valve, the inlet and outlet state of the gas to be dusted is controlled, and when the dust on the surface of the filter bag 211 accumulates to a certain degree and needs to be cleaned, the gas supply to the inside of the dust removal chamber is stopped in time.

[0028] In one embodiment, the corrosion-resistant material is concrete or cement. In this way, concrete or cement can be combined with other materials such as steel bars to form a stronger structure and enhance the stability of the building structure.

[0029] like Figure 1 , Figure 2 and Figure 4As shown, in one embodiment, an air outlet duct 23 and an air inlet duct 24 are connected to the outer surface of the dust removal chamber 21, the air outlet duct 23 is located above the air inlet duct 24, the air outlet duct 23 is covered on multiple air outlets 212, and the air inlet duct 24 is covered on multiple air inlets 213. In this way, by providing the air outlet duct 23 and the air inlet duct 24, it is convenient to unify the air intake and air outlet, and a single duct can complete the air intake and outlet operations, saving production costs, and the air outlet duct 23 and the air inlet duct 24 are an integrated structure on the housing 2, which is more solid, and can also prevent the air outlet 212 and the air inlet 213 from being directly exposed to the outside, so as to achieve sealing protection of the air outlet 212 and the air inlet 213.

[0030] like Figure 1 , Figure 2 and Figure 4 As shown, in one embodiment, the housing 2 further includes an exhaust chimney 25 and an air intake duct 26 connected to one side of the dust removal chamber 21. A cavity is provided in the dust removal chamber 21. Multiple dust removal chambers are arranged side by side in the cavity and are interconnected. The air intake duct 26 is connected to the cavity. The exhaust chimney 25 is fixed on the top of the air intake duct 26 and is connected to the air intake duct 26. In this way, when the dust accumulation on the outer surface of the filter bag 211 increases to a certain extent, compressed air needs to be introduced from the air intake duct 26. The compressed air is sprayed toward the filter bag 211 to vibrate the filter bag 211 so that the dust attached to the outer surface of the filter bag 211 falls off into the ash hopper 22.

[0031] like Figure 1 and Figure 2 As shown, in one embodiment, the bag-type dust collector further includes a spray mechanism 3, which includes a second control valve, a fan 31, and a spray pipe 32 connected to the air inlet pipe 26, the air outlet 212 of the fan 31 is connected to the spray pipe 32, and the second control valve is installed at the connection between the fan 31 and the spray pipe 32. In this way, by providing the second control valve, the circulation state of the compressed air sprayed from the fan 31 is controlled, and when the filter bag 211 needs to be cleaned, the second control valve can control the compressed air to pass through the air inlet pipe 26 into the dust removal chamber in a very short time and spray on the outer surface of the filter bag 211.

[0032] In one embodiment, the spray mechanism 3 further includes a control unit, which is electrically connected to the first control valve and the second control valve, respectively. Thus, by providing the control unit, when the dust accumulation on the surface of the filter bag 211 increases to a certain extent, the control unit sends a signal to close the first control valve and open the second control valve, so as to prevent the filter bag 211 from being affected by the newly introduced dust-removed gas during cleaning.

[0033] In one embodiment, the first control valve is a rotary airtight valve, and the second control valve is a pulse valve. In this way, the rotary airtight valve can achieve efficient sealing and avoid the problem of gas leakage; the pulse valve can adjust the flow rate of the gas by controlling the switch, accurately control the flow rate and distribution of the gas, and meet various gas control requirements in industrial production and manufacturing processes; the above-mentioned rotary airtight valve and pulse valve are both existing technologies and will not be described in detail here.

[0034] like Figure 2 and Figure 3 As shown, in one embodiment, an ash discharge port is provided at the bottom of the ash discharge hopper 22, and a guide mechanism 4 is provided on the ash discharge port. The guide mechanism 4 includes a drive shaft 41, a spiral body 42 and a guide pipe 43 connected to the ash discharge port. A guide cavity for dust to pass through is formed inside the guide pipe 43. One end of the drive shaft 41 extends into the guide cavity and can rotate relative to the guide pipe 43. The spiral body 42 is wound around the outer surface of the drive shaft 41.

[0035] like Figure 2 and Figure 3 As shown, in one embodiment, the guide mechanism 4 further includes a drive motor 44, which is mounted on the guide pipe 43, and the output end of the drive motor 44 is transmission-connected with the other end of the drive shaft 41. In this way, by providing the drive motor 44, the drive motor 44 drives the rotation of the drive shaft 41, thereby controlling the rotation of the spiral 42, and the dust enters the guide pipe 43 from the ash inlet and moves along the spiral 42. When the aluminum ash at the ash inlet moves toward the axis, its density increases, and the gap between the spiral 42 and the guide pipe 43 becomes smaller, which effectively increases the sealing performance and prevents dust from leaking out. In this process, the centrifugal force generated by the rotation of the spiral 42 interacts with the gravity of the dust, so that the aluminum ash reaches the ash outlet from the axis and is discharged through the ash outlet to be collected in the ash bag 1.

[0036] In one embodiment, an ash collecting port is provided on the ash bag 1, and an ash inlet and an ash outlet are provided on both sides of the guide pipe 43, the ash inlet is connected between the ash outlet and the guide cavity, and the ash outlet is connected between the guide cavity and the ash collecting port.

[0037] In the above embodiment, the dust cleaning control of the entire bag filter is controlled by a PLC editable controller, and the control modes are divided into automatic timing, pressure difference control and manual control.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A bag-type dust collector, characterized in that: It includes an ash bag and a shell integrally cast from a corrosion-resistant material, the shell includes a dust removal chamber and an ash discharge hopper connected in sequence from top to bottom, a plurality of dust removal chambers are arranged in the dust removal chamber, a plurality of filter bags are fixed in the dust removal chamber, an air outlet and an air inlet are opened in the dust removal chamber corresponding to the position of each dust removal chamber, the air outlet and the air inlet are respectively connected to the dust removal chamber, a first control valve is installed between the dust removal chamber and the air inlet, the ash bag is connected to the ash discharge hopper and is used to collect dust.

2. The bag-type dust collector according to claim 1, characterized in that: The corrosion-resistant material is concrete or cement.

3. The bag-type dust collector according to claim 1, characterized in that: An air outlet duct and an air inlet duct are connected to the outer surface of the dust removal cavity, the air outlet duct is located above the air inlet duct, the air outlet duct cover is arranged on the plurality of air outlets, and the air inlet duct cover is arranged on the plurality of air inlets.

4. The bag-type dust collector according to claim 1, characterized in that: The shell also includes an exhaust chimney and an air intake duct connected to one side of the dust removal chamber. A cavity is opened in the dust removal chamber. Multiple dust removal chambers are arranged side by side in the cavity and are interconnected. The air intake duct is connected to the cavity. The exhaust chimney is fixed on the top of the air intake duct and is connected to the air intake duct.

5. The bag-type dust collector according to claim 4, characterized in that: It also includes a blowing mechanism, which includes a second control valve, a fan and a blowing pipe connected to the air inlet pipe, the air outlet of the fan is connected to the blowing pipe, and the second control valve is installed at the connection between the fan and the blowing pipe.

6. The bag-type dust collector according to claim 5, characterized in that: The spray mechanism further includes a control unit, and the control unit is electrically connected to the first control valve and the second control valve respectively.

7. The bag-type dust collector according to claim 6, characterized in that: The first control valve is a rotary airtight valve, and the second control valve is a pulse valve.

8. The bag-type dust collector according to claim 1, characterized in that: An ash discharge port is provided at the bottom of the ash discharge hopper, and a guide mechanism is sleeved on the ash discharge port. The guide mechanism includes a drive shaft, a spiral body and a guide pipe connected to the ash discharge port. A guide cavity for dust to pass through is formed inside the guide pipe. One end of the drive shaft extends into the guide cavity and can rotate relative to the guide pipe. The spiral body is wound around the outer surface of the drive shaft.

9. The bag-type dust collector according to claim 8, characterized in that: The guide mechanism also includes a drive motor, which is mounted on the guide pipe, and an output end of the drive motor is drivingly connected to the other end of the drive shaft.

10. The bag-type dust collector according to claim 8, characterized in that: The ash bag is provided with an ash collecting port, and the two sides of the guide pipe are respectively provided with an ash inlet and an ash outlet, the ash inlet is connected between the ash outlet and the guide cavity, and the ash outlet is connected between the guide cavity and the ash collecting port.

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