Dust collection equipment
By designing a dust collection device that integrates dust collection cover, filter and spray head, the problem of dust overflow in the cement kiln is solved, and the effective fixation of dust and environmental cleaning is achieved.
Patent Information
- Application Number
- CN202421200581.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-28
AI Technical Summary
When using waste textile fabric as a replacement fuel in cement kilns, floc dust after crushing is difficult to effectively collect and transfer, resulting in dust overflow and endangering the health of operators.
Design a dust collection equipment, including a dust collection cover, a filter and a fan, with a spray head installed in the filter, and the spray head sprays water into the dust discharge port to fix the dust to avoid overflow.
It effectively solves the problem of dust overflow, ensures the cleanliness of the working environment, and protects the health of the operators.
Smart Images
Figure CN222445892U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of dust removal, in particular to a dust collecting device. Background Art
[0002] With the continuous development of cement kiln technology, the use of alternative fuels instead of coal powder has become one of the most effective means for cement kilns to reduce energy consumption and improve economic benefits.
[0003] There are many types of alternative fuels currently used in cement kilns, among which waste textile fabrics are widely used as alternative fuels in cement kilns.
[0004] Since waste textile fabrics need to be crushed before being used in cement kilns, a lot of flocculent dust will be generated after the crushing process. Ordinary bag dust collectors can filter the flocculent dust, but it is difficult to collect and transfer the flocculent dust in the bag filter. When cleaning the flocculent dust in the bag filter, the dust in the bag filter needs to be poured out. In the process of pouring out the dust, a large amount of flocculent dust will float into the air, resulting in a large amount of flying flocs floating in the air at the production site, which is very harmful to the health of the operators. Utility Model Content
[0005] The utility model aims to provide a dust collecting device, which can collect dust through a bag dust collector and spray water on the flocculent dust when transferring the flying flocs, so as to fix the dust in the dust collecting device and prevent the dust from spilling into the working environment.
[0006] In order to achieve the above object, the utility model provides a dust collecting device, which comprises a dust collecting hood, a filter and a fan connected in sequence, wherein the inlet of the filter is connected to the dust collecting hood, and the outlet of the filter is connected to the fan;
[0007] The filter comprises a shell, a dust filter bag, a nozzle and a dust outlet at the bottom of the shell, the dust filter bag is arranged inside the shell, the nozzle is arranged inside the shell and below the dust filter bag, and the nozzle is tilted downward and points to the dust outlet;
[0008] A push rod device for discharging dust is arranged at the bottom of the dust collecting filter bag.
[0009] Preferably, a first pressure gauge is provided on the pipeline connecting the dust collecting hood and the filter;
[0010] A second pressure gauge is arranged on the pipeline connecting the filter and the fan.
[0011] Preferably, at least two filters are provided, and the inlets and the outlets of the plurality of filters are respectively provided with control valves.
[0012] Preferably, the control valve is electrically connected to the first pressure gauge and the second pressure gauge.
[0013] Preferably, the nozzle is electrically connected to the first pressure gauge and the second pressure gauge.
[0014] Preferably, the nozzle is provided with an atomizing device for atomizing the sprayed water flow.
[0015] Preferably, the push rod device comprises a fixing plate, a push rod and a driving mechanism, the fixing plate is fixedly connected to the bottom of the dust collecting filter bag, one end of the push rod is connected to the fixing plate, and the other end is connected to the driving mechanism.
[0016] Preferably, the dust collecting filter bag is located at the upper part of the filter, an ash hopper is provided at the lower part of the filter, and a distance is provided between the opening of the dust collecting filter bag and the shell.
[0017] Preferably, the driving mechanism is electrically connected to the control valve.
[0018] Preferably, the ash hopper is configured to be conical, and the nozzle is arranged at a position away from the dust collecting filter bag and above the dust exhaust port.
[0019] According to the above technical scheme, the fan of the utility model draws air from the dust collecting equipment and generates negative pressure at the dust collecting hood, so that the dust collecting hood can collect small particles suspended in the air such as dust located near it. The collected dust moves to the filter through the pipeline, and the dust exhaust port is set to a normally closed state. After the mixture of dust and air enters the filter housing, since the dust exhaust port is closed, the moving gas mixture can only be filtered by the dust collecting filter bag and then move to the fan, and finally discharged from the system.
[0020] Preferably, two independent spaces are provided in the filter, which are respectively connected to the inlet and the outlet. After the gas mixture enters the filter from the inlet, it first enters the space containing the opening of the dust filter bag, and the gas mixture must be filtered by the dust filter bag before it can reach the other space connected to the outlet, thereby ensuring the filtering effect of the filter.
[0021] Under the action of the fan, the dust filter bag will continue to filter the gas mixture collected by the dust hood. As time goes by, more and more dust will accumulate in the dust filter bag. As a result, the resistance of the gas mixture passing through the dust filter bag will become greater and greater, and the dust filter bag needs to be cleaned. At this time, the dust filter bag can be pushed by the push rod device to make the dust originally in the dust filter bag enter the filter. The dust falls into the lower part of the filter under the action of gravity and is finally discharged from the dust outlet at the bottom of the shell.
[0022] In order to avoid dust overflow when discharging dust, nozzles are also arranged in the shell. These nozzles spray water toward the dust exhaust port. The sprayed water vapor mixes with the dust in the filter to fix the dust, which can effectively avoid the dust overflow in the filter. Therefore, it can effectively solve the problem of dust overflow into the air when cleaning the dust collecting equipment.
[0023] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:
[0025] Figure 1 is a schematic diagram of a dust collecting device;
[0026] Figure 2 It is a layout diagram of a filter;
[0027] Figure 3 It is a left view of a dust collecting device.
[0028] Description of Reference Numerals
[0029] 1 dust hood 2 fan
[0030] 31 entrance 32 exit
[0031] 36 housing 33 dust filter bag
[0032] 34 nozzle 35 dust outlet
[0033] 4 Push rod device 51 first pressure gauge
[0034] 52 Second pressure gauge 6 control valve
[0035] 41 fixed plate 42 push rod
[0036] 43 drive mechanism 7 belt conveyor
[0037] 8 Ash hopper DETAILED DESCRIPTION
[0038] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.
[0039] In the present utility model, unless otherwise stated, directional words contained in terms such as "bottom, inside, below, sloping downward, top" merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.
[0040] See also Figure 1-3 The dust collecting device comprises a dust collecting hood 1, a filter and a fan 2 connected in sequence, the inlet 31 of the filter is connected to the dust collecting hood 1, and the outlet 32 of the filter is connected to the fan 2;
[0041] The filter includes a housing 36, a dust filter bag 33, a nozzle 34 and a dust outlet 35 at the bottom of the housing 36. The dust filter bag 33 is arranged inside the housing 36. The nozzle 34 is arranged inside the housing 36 and below the dust filter bag 33. The nozzle 34 is tilted downward and points to the dust outlet 35.
[0042] A push rod device 4 for discharging dust is provided at the bottom of the dust collecting filter bag 33 .
[0043] Through the implementation of the above technical solution, the fan 2 draws air from the dust collecting equipment and generates negative pressure at the dust hood 1, so that the dust hood 1 can collect small particles suspended in the air such as dust located near it. The collected dust moves to the filter through the pipeline, and the dust exhaust port 35 is set to a normally closed state. After the dust and air mixture enters the filter housing 36, since the dust exhaust port 35 is closed, the moving gas mixture can only be filtered by the dust filter bag 33 and then move to the fan 2, and finally discharged from the system.
[0044] Preferably, two independent spaces are provided in the filter, which are respectively connected with the inlet 31 and the outlet 32. After the gas mixture enters the filter from the inlet 31, it first enters the space containing the opening of the dust filter bag 33, and the gas mixture must be filtered by the dust filter bag 33 before it can reach the other space connected with the outlet 32, thereby ensuring the filtering effect of the filter.
[0045] Under the action of the fan 2, the dust filter bag 33 will continue to filter the gas mixture collected by the dust hood 1. As time goes by, more and more dust will accumulate in the dust filter bag 33. As a result, the resistance of the gas mixture passing through the dust filter bag 33 will also become greater and greater, and the dust filter bag 33 needs to be cleaned. At this time, the dust filter bag 33 can be pushed by the push rod device 4, so that the dust originally in the dust filter bag 33 enters the filter. The dust falls into the lower part of the filter under the action of gravity and is finally discharged from the dust outlet 35 at the bottom of the housing 36.
[0046] In order to avoid dust overflow when discharging dust, nozzles 34 are further provided in the shell 36. These nozzles 34 spray water toward the dust outlet 35. The sprayed water vapor mixes with the dust in the filter to fix the dust, which can effectively avoid the dust overflow in the filter. Therefore, it can effectively solve the problem of dust overflow into the air when cleaning the dust collecting equipment.
[0047] Preferably, a belt conveyor 7 is provided below the dust exhaust port 35 so that the dust falling on the belt conveyor 7 can be promptly transported out for processing, thereby effectively protecting the working environment near the dust collecting equipment.
[0048] In this embodiment, preferably, a first pressure gauge 51 is provided on the pipeline connecting the dust collecting hood 1 and the filter;
[0049] A second pressure gauge 52 is provided on the pipeline connecting the filter and the fan 2 .
[0050] As working time goes by, more and more dust will remain in the dust filter bag 33, and the resistance of gas passing through the dust filter bag 33 will become greater and greater. Therefore, the dust filter bag 33 needs to be cleaned in time.
[0051] In one embodiment, the dust filter bag 33 is cleaned regularly, that is, after the dust filter bag 33 has worked for a fixed time, the push rod device 4 can be pushed to clean the dust filter bag 33. When this method is adopted, the time to clean the dust filter bag 33 is only related to the working duration of the dust filter bag 33, and has nothing to do with the actual state of the dust filter bag 33. Therefore, when cleaning, the actual state of the dust filter bag 33 may still be good, or the dust filter bag 33 may have been in an overloaded state for a period of time. Therefore, although the method of regularly cleaning the dust filter bag 33 is feasible, it is not scientific.
[0052] In one embodiment, pressure gauges are provided at both ends of the dust filter bag 33, and the dust accumulation in the dust filter bag 33 is judged according to the difference between the pressure gauges. Preferably, a first pressure gauge 51 is provided on the pipeline connecting the dust hood 1 and the filter, and a second pressure gauge 52 is provided on the pipeline connecting the filter and the fan 2. Since the dust filter bag 33 has resistance to air, the value of the second pressure gauge 52 will be smaller than the value of the first pressure gauge 51. The difference between the second pressure gauge 52 and the first pressure gauge 51 when the dust filter bag 33 needs to be cleaned is recorded according to the actual production situation, and the difference is set as a reminder value. When the difference between the second pressure gauge 52 and the first pressure gauge 51 is equal to or greater than the reminder value, the operator needs to clean the dust filter bag 33.
[0053] Preferably, in actual production, the difference between the second pressure gauge 52 and the first pressure gauge 51 when the dust filter bag 33 needs to be cleaned can be recorded multiple times, so as to set the reminder value more reliably.
[0054] Preferably, an alarm device may be provided. When the difference between the second pressure gauge 52 and the first pressure gauge 51 is equal to or greater than the warning value, an alarm signal will be sent to the alarm device, and the alarm device will send out an alarm sound and light signal to remind the operator.
[0055] In this embodiment, preferably, at least two filters are provided, and the inlets 31 and outlets 32 of the multiple filters are respectively provided with control valves 6 .
[0056] The control valve 6 controls whether the filter is in use. At least two filters are provided so that in the actual production process, one filter can be used and the other can be kept in reserve, so that the dust collecting equipment can ensure continuous operation.
[0057] In one embodiment, two filters are provided, one for use and one for standby. When the dust filter bag 33 of the filter in use reminds that it needs to be cleaned, the control valves 6 at both ends of the standby filter can be opened first to put it in working state, and then the control valve 6 of the filter in use can be closed. When the control valve 6 of the inlet 31 and the control valve 6 of the outlet 32 of the filter in use are closed, the filter is in a stopped working state, and the dust filter bag 33 of the filter can be cleaned. Since the filter in other use has been started, the dust collecting equipment is still in working state.
[0058] In one embodiment, three or more filters are provided, so more filters can be provided for operation, and one or two filters can be reserved as spares. Similarly, when a filter needs to clean the dust filter bag 33, the spare filter can be opened, and then the filter in use can be closed, and then the dust filter bag 33 of the closed filter can be cleaned, and the normal use of the dust collecting device will not be affected during the cleaning process.
[0059] In this embodiment, preferably, the control valve 6 is electrically connected to the first pressure gauge 51 and the second pressure gauge 52 .
[0060] When the difference between the first pressure gauge 51 and the second pressure gauge 52 exceeds the warning value, a control signal will be sent to control the control valve 6 to operate. Specifically, first, the control valve 6 of the spare filter is controlled to open, and then the filter whose dust bag 33 needs to be cleaned is closed. In this way, automatic control of the dust collecting equipment can be achieved.
[0061] In this embodiment, preferably, the nozzle 34 is electrically connected to the first pressure gauge 51 and the second pressure gauge 52 .
[0062] When the difference between the first pressure gauge 51 and the second pressure gauge 52 exceeds the warning value, the dust filter bag 33 needs to be cleaned. The control signal sent at this time also controls the nozzle 34, so that the nozzle 34 starts to spray water to moisten the dust in the dust filter bag 33 pushed out by the push rod device 4, so that the dust can be fixed, avoiding dust overflow when cleaning the dust filter bag 33.
[0063] In this embodiment, preferably, the spray head 34 is provided with an atomizing device for atomizing the sprayed water flow.
[0064] The water sprayed from the nozzle 34 is atomized into water vapor so that the water vapor can fully contact the dust, wet and fix as much dust in the filter as possible, prevent the dust from escaping, and improve the dust control effect.
[0065] In this embodiment, preferably, the push rod device 4 includes a fixed plate 41, a push rod 42 and a driving mechanism 43, the fixed plate 41 is fixedly connected to the bottom of the dust filter bag 33, one end of the push rod 42 is connected to the fixed plate 41, and the other end is connected to the driving mechanism 43.
[0066] The driving mechanism 43 pushes the push rod 42 to extend, thereby driving the fixing plate 41 to move forward, so that the dust in the dust filter bag 33 is pushed out of the dust filter bag 33 and falls into the housing 36 .
[0067] In one embodiment, two fixing plates 41 are provided, and the two fixing plates 41 are respectively located inside and outside the dust filter bag 33 . The connection between the fixing plates 41 and the bottom of the dust filter bag 33 is achieved by connecting the two fixing plates 41 .
[0068] In another embodiment, the fixing plate 41 is configured to be frame-shaped, and the frame-shaped fixing plate 41 is fixedly connected to the edge of the bottom of the dust filter bag 33 , and the dust filter bag 33 can also be cleaned by pushing the push rod 42 .
[0069] Preferably, a plurality of guide rails are arranged along the length direction of the dust filter bag 33, and the plurality of guide rails constitute a frame, in which the dust filter bag 33 is located. On the one hand, the frame can support the dust filter bag 33, and on the other hand, the frame can cooperate with the fixed plate 41 to enable the fixed plate 41 to move along the guide rails, so that the movement state of the fixed plate 41 is more stable when it is pushed out or retracted.
[0070] Since the material of the dust filter bag 33 has a certain degree of flexibility, the dust filter bag 33 will deform along with the movement of the fixed plate 41 during the process of the fixed plate 41 pushing the dust filter bag 33, that is, the dust filter bag 33 will produce a shaking effect during the movement of the fixed plate 41. Therefore, in the actual production process, pushing the fixed plate 41 by the push rod 42 can not only remove the dust accumulated in the dust filter bag 33, but also the shaking of the dust filter bag 33 itself is more conducive to separating the dust attached to the dust filter bag 33 from the dust filter bag 33, making the cleaning of the dust filter bag 33 more effective.
[0071] In this embodiment, preferably, the dust collecting filter bag 33 is located at the upper part of the filter, and the ash hopper 8 is provided at the lower part of the filter, and a distance is provided between the opening of the dust collecting filter bag 33 and the shell 36.
[0072] A platform is provided between the dust filter bag 33 and the ash hopper 8, which divides the filter into two independent spaces. The first space is connected to the inlet 31 for entering the gas mixture. The opening of the dust filter bag 33 is located in the first space. The gas mixture can only enter the dust filter bag 33 through the opening of the dust filter bag 33 in the first space and can enter the second space after being filtered, and flow out from the outlet 32 to the fan 2.
[0073] The platform is provided with a notch, which corresponds to the gap between the opening of the dust filter bag 33 and the housing 36, so as to facilitate the push rod device 4 to clean the dust filter bag 33. When the push rod device 4 pushes the push rod device 4 to clean the dust filter bag 33, the dust in the dust filter bag 33 moves forward to the notch, and falls into the ash hopper 8 below from the notch, and the dust in the ash hopper 8 can be discharged by opening the dust discharge port 35.
[0074] In this embodiment, preferably, the driving mechanism 43 is electrically connected to the control valve 6 .
[0075] One implementation method is: the drive mechanism 43 is linked with the control valve 6. When the control valve 6 is closed, the drive mechanism 43 starts to move to clean the dust filter bag 33; when the control valve 6 is opened, the drive mechanism 43 is retracted and the dust filter bag 33 is in working state.
[0076] Another implementation is: when the control valve 6 is closed, the drive mechanism 43 starts to work to clean the dust filter bag 33. When the dust bag 33 completes the cleaning work, the drive mechanism 43 retracts the push rod 42, so that the dust filter bag 33 is in a working state, waiting for the control valve 6 to open.
[0077] In this embodiment, preferably, the ash hopper 8 is configured to be conical, and the nozzle 34 is disposed at a position away from the dust collecting filter bag 33 and above the dust exhaust port 35 .
[0078] The nozzle 34 is arranged above the dust discharge port 35 and as far away from the dust filter bag 33 as possible. On the one hand, it can prevent the water vapor sprayed by the nozzle 34 from entering the dust filter bag 33 and affecting the normal use of the dust filter bag 33; on the other hand, the nozzle 34 is as close to the dust discharge port 35 as possible so that the dust mixed with the water vapor can flow out from the dust discharge port 35 below as soon as possible, avoiding the dust from staying in the shell 36 for a long time and reducing the possibility of dust adhering to the shell 36.
[0079] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.
[0080] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.
[0081] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.
Claims
1. A dust collecting device, characterized in that: The dust collecting device comprises a dust collecting hood (1), a filter and a fan (2) which are connected in sequence, wherein the inlet (31) of the filter is connected to the dust collecting hood (1), and the outlet (32) of the filter is connected to the fan (2); The filter comprises a shell (36), a dust filter bag (33), a nozzle (34) and a dust discharge port (35) located at the bottom of the shell (36); the dust filter bag (33) is arranged inside the shell (36); the nozzle (34) is arranged inside the shell (36) and below the dust filter bag (33); the nozzle (34) is tilted downward and points to the dust discharge port (35); A push rod device (4) for discharging dust is arranged at the bottom of the dust collecting filter bag (33).
2. The dust collecting device according to claim 1, characterized in that: A first pressure gauge (51) is provided on the pipeline connecting the dust collecting hood (1) and the filter; A second pressure gauge (52) is provided on the pipeline connecting the filter and the fan (2).
3. The dust collecting device according to claim 2, characterized in that: At least two filters are provided, and the inlets (31) and the outlets (32) of the plurality of filters are respectively provided with control valves (6).
4. The dust collecting device according to claim 3, characterized in that: The control valve (6) is electrically connected to the first pressure gauge (51) and the second pressure gauge (52).
5. The dust collecting device according to claim 4, characterized in that: The nozzle (34) is electrically connected to the first pressure gauge (51) and the second pressure gauge (52).
6. The dust collecting device according to claim 5, characterized in that: The spray head (34) is provided with an atomizing device for atomizing the sprayed water flow.
7. The dust collecting device according to claim 3, characterized in that: The push rod device (4) comprises a fixing plate (41), a push rod (42) and a driving mechanism (43); the fixing plate (41) is fixedly connected to the bottom of the dust collecting filter bag (33); one end of the push rod (42) is connected to the fixing plate (41), and the other end is connected to the driving mechanism (43).
8. The dust collecting device according to claim 7, characterized in that: The dust collecting filter bag (33) is located at the upper part of the filter, and an ash hopper (8) is arranged at the lower part of the filter. A distance is arranged between the opening of the dust collecting filter bag (33) and the shell (36).
9. The dust collecting device according to claim 8, characterized in that: The driving mechanism (43) is electrically connected to the control valve (6).
10. The dust collecting device according to claim 9, characterized in that: The ash hopper (8) is configured to be conical, and the nozzle (34) is configured to be located at a position away from the dust collecting filter bag (33) and above the dust discharge port (35).