Partitioned flushing filter with pleated filter element

Abstract

The utility model discloses a partition flushing filter with a pleated filter element, which comprises a filter shell and the pleated filter element, the pleated filter element is cylindrical and is rotatably arranged in the filter shell, the filter shell is provided with an air inlet and an air outlet, the air inlet is communicated with the cylindrical interior of the pleated filter element, and the air outlet is communicated with the pleated filter element. The air outlet is communicated with the cylindrical exterior of the wrinkled filter element, an inner baffle and a sliding side plate are arranged on the filter shell, the inner baffle is attached to the cylindrical inner side of the wrinkled filter element, and the sliding side plate is arranged on the outer wall of the filter shell in a sliding mode; when the sliding side plate slides out, a washing area is defined by the sliding side plate, the inner baffle and the outer wall of the filter shell, a part of the wrinkled filter element is located in the washing area, a spraying device for washing the wrinkled filter element is arranged in the washing area, and a sewage draining exit is formed in the washing area. According to the utility model, the wrinkled filter element can be cleaned and maintained without stopping, and the influence on the normal work of the filter is small.

Description

Technical Field

[0001] This utility model relates to a washable gas filter, belonging to the technical field of filtration devices. Background Technology

[0002] Gas filters are commonly used equipment for primary gas purification in industrial processes. Dust-laden gas is discharged after passing through the filter element. Over time, the accumulation of dust on the filter element will increase the internal resistance of the filter, significantly reduce the filtration speed, and affect the filtration effect.

[0003] Traditional filter cleaning methods involve switching redundant filters, taking gas filters offline for cleaning and maintenance after a period of operation. However, this requires additional backup filters, which is costly and takes up equipment space. Filters that can be cleaned online typically use reverse airflow purging, which allows for maintenance without shutting down the system. However, this purging significantly impacts normal exhaust and the purging effect is often unsatisfactory. Utility Model Content

[0004] To address the shortcomings of the existing technology, this invention provides a partitioned flushing filter with a pleated filter element, aiming to achieve online cleaning and maintenance of the gas filter without shutting down the system, and to reduce the impact on the exhaust airflow.

[0005] The technical solution of this utility model is as follows: A partitioned flushing filter with a pleated filter element includes a filter housing and a pleated filter element. The pleated filter element is cylindrical and rotatably disposed inside the filter housing. The filter housing is provided with an air inlet and an air outlet. The air inlet communicates with the cylindrical interior of the pleated filter element, and the air outlet communicates with the cylindrical exterior of the pleated filter element. The filter housing is provided with an inner baffle and a sliding side plate. The inner baffle is attached to the cylindrical inner side of the pleated filter element, and the sliding side plate is slidably disposed on the outer wall of the filter housing. When the sliding side plate slides out, a flushing zone is formed by the sliding side plate, the inner baffle, and the outer wall of the filter housing. A portion of the pleated filter element is located in the flushing zone. A spray device for flushing the pleated filter element is provided in the flushing zone, and a drain outlet is provided in the flushing zone.

[0006] Furthermore, the spraying device includes a nozzle and a water pipe, the nozzle being disposed on the outer wall of the filter housing, and the water pipe being connected to the nozzle to supply water to the nozzle.

[0007] Furthermore, when the sliding side plate slides out, the end of the sliding side plate, the pleated filter element, and the inner baffle are in contact with each other. The rinsing zone formed by the contact of these three parts achieves as much isolation as possible from the filtration working area, reducing the amount of airflow entering the rinsing zone.

[0008] Furthermore, the sliding side plate slides radially along the filter element.

[0009] Furthermore, the fold line direction of the pleated filter element is parallel to the axial direction of the cylindrical shape of the pleated filter element.

[0010] Furthermore, the drain outlet is located on the bottom plate of the filter housing.

[0011] Furthermore, the drain outlet is located between the wall of the pleated filter element and the inner baffle.

[0012] Furthermore, it includes a filter element rotating shaft and a driving device. The filter element rotating shaft is connected to the pleated filter element and extends out of the filter housing. The driving device is used to drive the filter element rotating shaft to rotate, thereby causing the pleated filter element to rotate.

[0013] Compared with the prior art, the advantages of the technical solution provided by this utility model are as follows:

[0014] This invention separates a portion of the pleated filter element into an offline state through a rinsing zone, while the remaining pleated filter element remains online. The offline pleated filter element is rinsed and maintained, so that the entire filter does not need to be shut down.

[0015] Since each flush only targets a portion of the pleated filter element, and that portion is located in an isolated flushing zone, the impact on the filter's filtration efficiency is minimal.

[0016] Because the cleaning is carried out in an isolated rinsing area, the area that needs to be rinsed is small, and a small flow rate of rinsing agent can bring a large rinsing pressure. The ineffective area of ​​the rinsing agent spray is small, thereby improving the utilization rate of the rinsing agent. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a partitioned flushing filter with a pleated filter element, as shown in the embodiment.

[0018] Figure 2 This is a schematic diagram of the longitudinal section structure of a partitioned flushing filter with a pleated filter element, as shown in the embodiment.

[0019] Figure 3 This is a schematic diagram of the oblique cross-sectional structure of the partitioned flushing filter with a pleated filter element, as shown in the embodiment.

[0020] Figure 4 This is a top view schematic diagram of the internal structure of a partitioned flushing filter with a pleated filter element, as shown in the embodiment. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading this description, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0022] Please combine Figures 1 to 3 As shown, the partitioned flushing filter with pleated filter element 2 in this embodiment includes a filter housing 1 and a pleated filter element 2. The filter housing 1 has a cylindrical structure, with openings on the top and side walls. Specifically, the top of the filter housing 1 is a top cover 101, with an opening in the middle forming an air inlet 102. The gas to be filtered is connected to the air inlet 102 through a pipe and enters the filter housing 1 from the top. The bottom of the filter housing 1 is a closed bottom plate 104. The openings on the side walls of the filter housing 1 form an air outlet 103, from which the airflow filtered by the partitioned flushing filter is discharged.

[0023] The pleated filter element 2, also cylindrical, is housed within the filter housing 1. The pleated filter element 2 is wavy along the circumferential direction of the cylinder, with the fold lines parallel to the axial direction of the cylinder. This wavy structure increases the filtration area and improves filtration efficiency. The upper end of the pleated filter element 2 is a circular top plate, with a central hole facing the air inlet 102 of the filter housing 1. The gas to be filtered enters the filter housing 1 through the air inlet 102 and directly into the cylindrical interior of the pleated filter element 2. The wavy wall of the pleated filter element 2 has filter holes 201. The airflow passes through these holes and is filtered as it passes through the pleated filter element 2. The filtered gas then exits the cylindrical exterior of the pleated filter element 2 and is discharged from the air outlet 103. The bottom end of the pleated filter element 2 is a lower sealing plate 202, and a filter element rotating shaft 3 is disposed in the middle of the lower sealing plate 202. The filter element rotating shaft 3 extends downward through the bottom plate 104 of the filter housing 1, thus making the pleated filter element 2 rotatably connected to the filter housing 1. A drive device is disposed outside the filter housing 1 to drive the filter element rotating shaft 3 to rotate, thereby causing the pleated filter element 2 to rotate inside the filter housing 1. The drive device can adopt a structure in the prior art, including but not limited to a motor, with the motor shaft driving the filter element rotating shaft 3 to rotate through a reducer.

[0024] The filter housing 1 is also equipped with an inner baffle 105, a sliding side plate 4, and a spray device. The inner baffle 105 extends downward from the top cover 101 of the filter housing 1 along the axial direction of the filter housing 1 to the lower sealing plate 202 of the pleated filter element 2. The inner baffle 105 is located inside the cylindrical cavity of the pleated filter element 2 and adheres to the inner cylindrical side of the pleated filter element 2. This adherence means that the inner baffle 105 and the pleated filter element 2 are in contact but can move relative to each other, rather than being fixed together. Correspondingly, the bottom end of the inner baffle 105 is in sliding contact with the lower sealing plate 202 of the pleated filter element 2, ensuring that the inner baffle 105 does not interfere with the rotation of the pleated filter element 2 when it rotates.

[0025] Long grooves 106 spaced at regular intervals are provided on the outer wall of the filter housing 1. Typically, the central angle corresponding to this interval is between 5° and 15° to avoid forming an excessively large rinsing zone (the formation of the rinsing zone will be explained later). The long grooves 106 are arranged axially along the cylindrical shape of the filter housing 1, and sliding side plates 4 extending from top to bottom are provided within the long grooves 106. The sliding side plates 4 can slide inward from the outer wall of the filter housing 1 along the radial direction of the pleated filter element 2. The structure driving the sliding side plates 4 can be implemented in various ways. For example, a cylinder can be installed within the long grooves 106, with the cylinder rod connected to the sliding side plate 4, thereby pushing or pulling the sliding side plate 4 out. Alternatively, guide pins can be provided above and below the sliding side plates 4, and turntables 5 with arc-shaped guide grooves can be provided above and below the filter housing 1. The guide pins are positioned within the arc-shaped guide grooves, and the rotation of the turntables 5, under the dual constraint of the arc-shaped guide grooves and the long grooves 106, causes the sliding side plates 4 to slide out or retract.

[0026] When the sliding side plate 4 slides out of the long groove 106, the rinsing zone is formed by the sliding side plate 4, the inner baffle 105, and the outer wall of the filter housing 1. When the sliding side plate 4 slides out, the end side of the sliding side plate 4, the pleated filter element 2, and the inner baffle 105 are in contact. This contact is not fixed but rather close together. Thus, a part of the pleated filter element 2 is located in the rinsing zone. In order to make the end side of the sliding side plate 4, the pleated filter element 2, and the inner baffle 105 in contact, when setting the spacing of the long groove 106, the best approach is to make several complete pleats on the pleated filter element 2 exactly in the rinsing zone. That is, assuming that the position where the inner baffle 105 is in contact with the pleated filter element 2 is the trough of a wave bend, the end side of the corresponding sliding side plate 4 will also be in the trough position after sliding out.

[0027] A spraying device is installed on the outer wall of the filter housing 1 in the rinsing zone. The spraying device includes nozzles 6 and water pipes 7. The nozzles 6 are directly installed on the outer wall of the filter housing 1, and the water pipes 7 are connected to the nozzles 6 to supply water (rinsing liquid). The nozzles 6, located on the outer wall of the filter housing 1, spray rinsing liquid towards the pleated filter element 2 for rinsing. The rinsing direction of the rinsing liquid is from the outside of the cylindrical pleated filter element 2 to the inside, which is opposite to the filtration direction of the gas, making rinsing and cleaning more efficient. A drain port 8 is provided on the bottom plate 104 of the filter housing 1 in the rinsing zone, specifically located between the corrugated wall of the pleated filter element 2 and the inner baffle 105. The rinsing liquid is discharged through the drain port 8 after rinsing. It should be noted that several openings 9 need to be provided on the lower sealing plate 202 of the pleated filter element 2, so that at least one opening 9 in the rinsing zone can correspond to the drain port 8, so that the rinsing liquid can be discharged from the drain port 8.

[0028] The rinsing and maintenance process of this partitioned flushing filter with pleated filter element 2 is as follows: When rinsing and maintenance are required, the sliding side plate 4 slides out to form a rinsing zone, where a spray device sprays and rinses the pleated filter element 2 located in the rinsing zone. The rinsing liquid is discharged from the drain port 8. After a portion of the pleated filter element 2 has been rinsed, the sliding side plate 4 is retracted, driving the pleated filter element 2 to rotate at a certain angle, which is the central angle corresponding to the spacing of the long groove 106. This causes another portion of the pleated filter element 2 to rotate to the position corresponding to the spray device, and the sliding side plate 4 slides out again to form a rinsing zone for rinsing. The aforementioned process is repeated until the entire pleated filter element 2 has been rinsed once. During this process, since each rinsing isolates a portion of the pleated filter element 2 (not necessarily completely sealed) in the rinsing zone, the airflow to be filtered still enters the cylindrical interior of the pleated filter element 2 from the air inlet 102, passes through the pleated filter element 2 for filtration, and is discharged from the air outlet 103. The interaction with the spray rinsing in the rinsing zone is minimal, achieving online (with some filter elements offline) non-stop cleaning and maintenance.

Claims

1. A partitioned flushing filter with a pleated filter element, comprising a filter housing and a pleated filter element, characterized in that, The pleated filter element is rotatably mounted in a cylindrical shape inside a filter housing. The filter housing has an air inlet and an air outlet. The air inlet communicates with the cylindrical interior of the pleated filter element, and the air outlet communicates with the cylindrical exterior of the pleated filter element. The filter housing has an inner baffle and a sliding side plate. The inner baffle is attached to the inner cylindrical side of the pleated filter element, and the sliding side plate is slidably mounted on the outer wall of the filter housing. When the sliding side plate slides out, a rinsing zone is formed by the sliding side plate, the inner baffle, and the outer wall of the filter housing. A portion of the pleated filter element is located in the rinsing zone. A spray device for rinsing the pleated filter element is provided in the rinsing zone, and a drain outlet is provided in the rinsing zone.

2. The partitioned flushing filter with a pleated filter element according to claim 1, characterized in that, The spraying device includes a nozzle and a water pipe. The nozzle is disposed on the outer wall of the filter housing, and the water pipe is connected to the nozzle to supply water to the nozzle.

3. The partitioned flushing filter with a pleated filter element according to claim 1, characterized in that, When the sliding side plate slides out, the end of the sliding side plate, the pleated filter element, and the inner baffle are in contact.

4. The partitioned flushing filter with a pleated filter element according to claim 1, characterized in that, The sliding side plate slides radially along the filter element.

5. The partitioned flushing filter with a pleated filter element according to claim 4, characterized in that, The fold lines of the pleated filter element are parallel to the axial direction of the cylindrical shape of the pleated filter element.

6. The partitioned flushing filter with a pleated filter element according to claim 2, characterized in that, The drain outlet is located on the bottom plate of the filter housing.

7. The partitioned flushing filter with a pleated filter element according to claim 6, characterized in that, The drain outlet is located between the wall of the pleated filter element and the inner baffle.

8. The partitioned flushing filter with a pleated filter element according to claim 1, characterized in that, The filter includes a filter element rotating shaft and a drive device. The filter element rotating shaft is connected to the pleated filter element and extends out of the filter housing. The drive device is used to drive the filter element rotating shaft to rotate, thereby causing the pleated filter element to rotate.

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