Filter element machining method, filter element, filtering device and operation machine

Abstract

The invention relates to the field of filtration, and discloses a filter element processing method, a filter element, a filter device and an operation machine. The filter element processing method comprises the following steps: preparing a sheet-shaped filtering piece and a sheet-shaped supporting net; in the circumferential direction of the central pipe, the filtering piece surrounds the outer side of the central pipe, and the supporting net surrounds the outer side of the filtering piece; the two edges, extending in the axial direction of the central pipe, of the filtering piece are connected to the central pipe, and the two edges, extending in the axial direction of the central pipe, of the supporting net are connected to the central pipe; the two ends of a first cylindrical structure formed by surrounding the filtering piece are connected to the central pipe, and the two ends of a second cylindrical structure formed by surrounding the supporting net are connected to the central pipe. In the winding process, the filtering piece and the central pipe can be better attached and matched, the supporting net and the filtering piece can be better attached and matched, and therefore the problem that in the prior art, the size matching between the filtering piece and the central pipe is difficult to achieve, and the size matching between the supporting net and the filtering piece is difficult to achieve is solved or improved.

Description

Technical Field

[0001] The present invention relates to the field of filtering technology, and in particular to a filter element processing method, a filter element, a filtering device and an operating machine. Background Art

[0002] In the existing filtration field, the filter element is a core component, and its structural design is directly related to the filtration efficiency, service life and performance of the overall equipment.

[0003] In the related art, the filter element structure includes a central tube, a filter element and a support net. The central tube serves as the skeleton of the filter element, and the filter element is cylindrical and sleeved on the outside of the central tube, responsible for intercepting and removing impurities in the fluid. The support net is cylindrical and further wrapped around the outside of the filter element, aiming to enhance the overall strength of the filter element and prevent the filter element from being deformed or damaged under the impact of high-pressure or high-speed fluid.

[0004] Due to tolerance accumulation during the manufacturing process, thermal expansion and contraction of materials, etc., it is difficult to achieve size matching between the filter element and the center tube, and between the support net and the filter element. This mismatch may not only lead to installation difficulties and increase assembly costs, but also cause uneven stress distribution in the filter element. In long-term operation, the filter element is prone to local wear or tear. The support net may also be deformed due to uneven force, thus affecting the stability and service life of the filter element. Summary of the invention

[0005] In view of this, the present invention provides a filter element processing method, a filter element, a filtering device and an operating machine to solve or improve the problem of difficulty in achieving size matching between the filter element and the center tube, and between the support net and the filter element.

[0006] In a first aspect, the present invention provides a filter element processing method, comprising:

[0007] Prepare sheet-shaped filter elements and sheet-shaped support nets;

[0008] Along the circumference of the central tube, the filter element is surrounded on the outside of the central tube, and the support net is surrounded on the outside of the filter element;

[0009] Connecting two edges of the filter element extending along the axial direction of the central tube to the central tube, and connecting two edges of the support net extending along the axial direction of the central tube to the central tube;

[0010] The two ends of the first cylindrical structure formed by surrounding the filter element are connected to the central tube, and the two ends of the second cylindrical structure formed by surrounding the support net are connected to the central tube.

[0011] In an optional embodiment, the filter element is surrounded on the outside of the central tube, and the support net is surrounded on the outside of the filter element, comprising: stacking the filter element and the support net, and surrounding the filter element and the support net on the outside of the central tube;

[0012] and / or, connecting two edges of the filter element extending along the axial direction of the central tube to the central tube, comprising: connecting the two edges of the filter element to the central tube by ultrasonic welding;

[0013] And / or, connecting two edges of the support mesh extending along the axial direction of the central tube to the central tube, including: connecting the two edges of the support mesh to the central tube by ultrasonic welding.

[0014] In an optional embodiment, one end of the central tube protrudes from the first cylindrical structure, and a sealing ring groove is provided on the outer circumferential wall of the protruding portion of the central tube;

[0015] Correspondingly, the two ends of the first cylindrical structure formed by surrounding the filter element are connected to the central tube, and the two ends of the second cylindrical structure formed by surrounding the support net are connected to the central tube, including:

[0016] Connecting one end of the first cylindrical structure and the second cylindrical structure close to the sealing ring groove to the central tube by ultrasonic welding;

[0017] And, the ends of the first cylindrical structure, the second cylindrical structure and the central tube which are away from the sealing ring groove are all placed in the end cover provided with glue.

[0018] In an optional embodiment, one end of the central tube protrudes from the first cylindrical structure, a sealing ring groove is provided on the outer circumferential wall of the protruding portion of the central tube, and one end of the central tube away from the sealing ring groove is closed;

[0019] Correspondingly, the two ends of the first cylindrical structure formed by surrounding the filter element are connected to the central tube, and the two ends of the second cylindrical structure formed by surrounding the support net are connected to the central tube, including:

[0020] Both ends of the first tubular structure and both ends of the second tubular structure are connected to the central tube by ultrasonic welding.

[0021] In a second aspect, the present invention further provides a filter element, comprising:

[0022] Central tube;

[0023] A filter element is disposed around the outside of the central tube along the circumference of the central tube, wherein two edges of the filter element extending along the axial direction of the central tube are connected to the central tube, and two ends of the first cylindrical structure formed by the filter element are connected to the central tube;

[0024] The support net is arranged around the outside of the filter element along the circumference of the central tube. Both edges of the support net extending along the axial direction of the central tube are connected to the central tube, and both ends of the second cylindrical structure formed by the support net are connected to the central tube.

[0025] In an optional embodiment, both edges of the filter element are connected to the central tube by ultrasonic welding;

[0026] And / or, both edges of the support mesh are connected to the central tube via ultrasound.

[0027] In an optional embodiment, the central tube is configured as a cylinder with two ends open, and one end of the central tube protrudes from the first cylindrical structure, a sealing ring groove is provided on the outer circumferential wall of the protruding portion of the central tube, and the filter element further comprises an end cover, and the first cylindrical structure, the second cylindrical structure and one end of the central tube away from the sealing ring groove are all placed in the end cover and bonded to the end cover;

[0028] Alternatively, the center tube is configured as a cylinder with one end closed, and one end of the center tube protrudes from the first tubular structure, a sealing ring groove is provided on the outer circumferential wall of the protruding part of the center tube, and both ends of the first tubular structure and both ends of the second tubular structure are connected to the center tube by ultrasonic welding.

[0029] In a third aspect, the present invention further provides a filtering device, comprising:

[0030] The outer shell is set as a cylindrical structure, the side wall of the outer shell is provided with an air inlet, and one end of the outer shell is provided with an exhaust port;

[0031] an exhaust pipe extending into the interior of the housing through the exhaust port;

[0032] The safety filter element is a filter element processed by the filter element processing method as described above, or is a filter element as described above, wherein the center pipe is plugged into the exhaust pipe;

[0033] The main filter element is sleeved on the outside of the safety filter element, and the main filter element is plugged into the exhaust pipe.

[0034] In an optional embodiment, the housing is provided with an exhaust port and a clamping sleeve, the side wall of the clamping sleeve is provided with at least two through grooves arranged along the circumferential direction, the through grooves are arranged through along the wall thickness direction of the clamping sleeve, and the through grooves penetrate through both ends of the clamping sleeve along the axial direction of the clamping sleeve, the outer circumferential wall of the exhaust pipe is provided with a clamping ring groove, and the clamping sleeve is clamped in the clamping ring groove;

[0035] And / or, a first baffle ring is provided inside the housing, the first baffle ring is sleeved on the outside of the main filter element, and one end of the first baffle ring is connected to one end of the housing provided with the exhaust port, there is a gap between the first baffle ring and the inner wall of the housing, and the air inlet corresponds to the space between the first baffle ring and the inner wall of the housing;

[0036] And / or, the center tube is inserted into the exhaust pipe, and the inner wall of the exhaust pipe is provided with at least two limiting members distributed along the circumference of the center tube, and the limiting members extend along the axial direction of the center tube, and one end of the center tube extending into the exhaust pipe abuts against the limiting members, and the limiting members limit the center tube.

[0037] In an optional embodiment, a second baffle ring is provided inside the outer shell, the second baffle ring is sleeved on the outer side of the main filter element, the second baffle ring is connected to the end of the outer shell facing away from the exhaust port, and there is a spacing between the second baffle ring and the inner wall of the outer shell. The outer shell is also provided with a discharge port, and the discharge port corresponds to the space between the second baffle ring and the inner wall of the outer shell.

[0038] In a fourth aspect, the present invention further provides an operating machine, comprising a filter element processed by the filter element processing method as described above, a filter element as described above, or a filtering device as described above.

[0039] The filter element processing method provided by the present invention first wraps the sheet-shaped filter element and the support net around the surface of the central tube, and then connects the filter element and the support net to the central tube. During the winding process, the filter element and the central tube, as well as the support net and the filter element, can be better fitted, thereby solving or improving the problem in the related art that it is difficult to achieve size matching between the filter element and the central tube, as well as between the support net and the filter element.

[0040] The filter element, filtering device and operating machine provided by the present invention also have corresponding beneficial effects for the same reasons as the filter element processing method in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 It is a schematic diagram of the structure of the filter element provided in an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of a structure in which a filter element and a support net are wrapped around a central tube according to an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of the structure after the filter element and the support net are connected to the central tube in an embodiment of the present invention;

[0045] Figure 4 This is a schematic structural diagram of a central tube with one end closed provided in an embodiment of the present invention;

[0046] Figure 5 A schematic diagram of the structure of an end cover provided in an embodiment of the present invention;

[0047] Figure 6 It is a schematic diagram of the structure of the filtering device provided in an embodiment of the present invention;

[0048] Figure 7 for Figure 6 Schematic diagrams of the filtering device shown at other angles;

[0049] Figure 8 It is a schematic diagram of the explosion structure of the exhaust pipe and the shell provided in an embodiment of the present invention.

[0050] Description of reference numerals:

[0051] 1. Filter element; 101. First edge; 2. Support net; 202. Second edge; 3. Center tube; 301. Sealing ring groove; 4. End cover; 5. Shell; 501. Air inlet; 502. Exhaust port; 503. Snap-on sleeve; 5031. Through groove; 504. Connecting ring; 505. Connecting sleeve; 506. Exhaust port; 507. First cylinder; 508. Second cylinder; 6. Exhaust pipe; 601. Snap-on ring groove; 602. Limiting piece; 7. Main filter element; 8. First retaining ring; 9. Second retaining ring; 10. Dust bag. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0053] Combine the following Figures 1 to 8 The filter element processing method provided in the embodiment of the present invention is described.

[0054] Specifically, the filter element processing method includes steps S100 to S400.

[0055] Step S100: preparing a sheet-shaped filter element 1 and a sheet-shaped support net 2.

[0056] Specifically, a sheet-shaped filter element 1 of corresponding size and a sheet-shaped support net 2 of corresponding size can be prepared through a cutting process, and of course, a filter element 1 of corresponding size and a support net 2 of corresponding size can also be purchased. The filter element 1 includes but is not limited to a filter net, a filter cloth or a filter cotton. The support net 2 can be a plastic net.

[0057] Step S200 , along the circumference of the central tube 3 , surround the filter element 1 on the outside of the central tube 3 , and surround the support net 2 on the outside of the filter element 1 .

[0058] Specifically, refer to Figure 2 As shown, the filter element 1 is surrounded on the outer side of the central tube 3 along the circumference of the central tube 3, and the support net 2 is surrounded on the outer side of the filter element 1 along the circumference of the central tube 3. A plurality of through holes are provided on the side wall of the central tube 3 for fluid to pass through, and the filter element 1 covers all the through holes on the side wall of the central tube 3.

[0059] Step S300 , connecting two edges of the filter element 1 extending along the axial direction of the central tube 3 to the central tube 3 , and connecting two edges of the support net 2 extending along the axial direction of the central tube 3 to the central tube 3 .

[0060] Specifically, refer to Figure 2 As shown, after the filter element 1 is wrapped around the central tube 3 along the circumference of the central tube 3, the edge of the filter element 1 extending along the axial direction of the central tube 3 is the first edge 101. There are two first edges 101, and both first edges 101 are connected to the surface of the central tube 3.

[0061] After the support net 2 is wrapped around the central tube 3 along the circumferential direction of the central tube 3, the edge of the support net 2 extending along the axial direction of the central tube 3 is the second edge 202. There are two second edges 202, and the two second edges 202 can be directly connected to the outer circumferential surface of the central tube 3, or connected to the outer circumferential surface of the filter element 1, that is, connected to the central tube 3 through the filter element 1.

[0062] Step S400 , connecting two ends of a first cylindrical structure formed by surrounding the filter element 1 to the central tube 3 , and connecting two ends of a second cylindrical structure formed by surrounding the support net 2 to the central tube 3 .

[0063] Specifically, the filter element 1 is wrapped around the central tube 3 to form a first cylindrical structure, and both ends of the first cylindrical structure are connected to the outer circumferential surface of the central tube 3, so that both ends of the first cylindrical structure form a sealing structure with the central tube 3 to prevent the fluid from passing through the gap between the first cylindrical structure and the central tube 3.

[0064] The support net 2 is wrapped around the central tube 3 to form a second cylindrical structure, and both ends of the second cylindrical structure are connected to the outer circumferential surface of the central tube 3, or, both ends of the second cylindrical structure are connected to the outer circumferential surface of the filter element 1, that is, connected to the central tube 3 through the filter element 1.

[0065] The filter element processing method provided in this embodiment first wraps the sheet-shaped filter element 1 and the support net 2 around the surface of the central tube 3, and then connects the filter element 1 and the support net 2 to the central tube 3. During the winding process, the filter element 1 and the central tube 3, as well as the support net 2 and the filter element 1, can be better fitted, thereby solving or improving the problem in the related art that the filter element 1 and the central tube 3, as well as the support net 2 and the filter element 1 are often difficult to achieve size adaptation.

[0066] Such a configuration can, on the one hand, reduce the difficulty of assembling the filter element, and on the other hand, the filter element 1 is evenly stressed between the central tube 3 and the support net 2, and is not easy to fluctuate or swing under the action of the fluid, which can avoid the problem of local wear or tear of the filter element 1 during long-term operation. On the other hand, the support net 2 is also evenly stressed, which can avoid the problem of deformation of the support net 2 due to uneven stress, thereby affecting the stability and service life of the filter element.

[0067] In addition, there is a connection area extending along the axial direction of the center tube 3 between the filter element 1 or the support net 2 and the center tube 3, and there is also a connection area extending along the circumferential direction of the center tube 3 between the filter element 1 or the support net 2 and the center tube 3. By setting the connection area in both the axial and circumferential directions, the stress can be distributed more evenly, avoiding stress concentration in one direction, thereby reducing material fatigue and damage caused by stress concentration.

[0068] In some embodiments provided by the present invention, the filter element 1 is surrounded on the outside of the central tube 3, and the support net 2 is surrounded on the outside of the filter element 1, including:

[0069] The filter element 1 and the support net 2 are stacked, and the filter element 1 and the support net 2 are surrounded on the outside of the central tube 3 .

[0070] Specifically, the filter element 1 and the support net 2 are first stacked and arranged, and then the filter element 1 is located on the inside and the support net 2 is located on the outside, and the filter element 1 and the support net 2 are simultaneously surrounded on the outside of the central tube 3 .

[0071] With such arrangement, on the one hand, the filter element 1 and the support net 2 can be installed on the central tube 3 at the same time, thereby improving the installation efficiency of the filter element 1 and the support net 2.

[0072] On the other hand, the filter element 1 and the support net 2 are stacked so that there is an accurate relative position relationship between the filter element 1 and the support net 2. Therefore, when the filter element 1 and the support net 2 are simultaneously surrounded on the outside of the central tube 3, the filter element 1 and the support net 2 also have an accurate relative position relationship, thereby improving the installation accuracy of the filter element 1 and the support net 2 on the central tube 3. In addition, it is convenient to connect the filter element 1 and the support net 2 to the central tube 3 at the same time, thereby improving the processing efficiency of the filter element.

[0073] In some embodiments provided by the present invention, two edges of the filter element 1 extending along the axial direction of the central tube 3 are connected to the central tube 3, including:

[0074] The two edges of the filter element 1 are connected to the central tube 3 by ultrasonic welding.

[0075] Specifically, the filter element 1 can be welded by an ultrasonic welding device. For example, the mold of the ultrasonic welding device can be inserted into the central tube 3 and support the position to be welded. The welding head of the ultrasonic welding device is pressed against the position to be welded of the filter element 1, that is, pressed against the edge of the filter element 1, and the filter element 1 is welded to the central tube 3.

[0076] In this embodiment, ultrasonic welding can be used to complete the welding process of the filter element 1 and the central tube 3 in a very short time, thereby improving the production efficiency of the filter element. Furthermore, ultrasonic welding can be used to weld the filter element 1 and the central tube 3 together even if the filter element 1 and the central tube 3 are made of different materials.

[0077] At the same time, ultrasonic welding can achieve good sealing between the filter element 1 and the central tube 3 to prevent fluid from leaking between the filter element 1 and the central tube 3 .

[0078] In addition, during the ultrasonic welding process, the welding head can contact the two edges of the filter element 1 at the same time, so as to weld the two edges of the filter element 1 to the central tube 3 at the same time, thereby further improving the production efficiency of the filter element.

[0079] In some embodiments provided by the present invention, two edges of the support net 2 extending along the axial direction of the central tube 3 are connected to the central tube 3, including:

[0080] The two edges of the support mesh 2 are connected to the central tube 3 by ultrasonic welding.

[0081] Specifically, the support mesh 2 can be welded by an ultrasonic welding device. For example, the mold of the ultrasonic welding device can be inserted into the central tube 3 and support the position to be welded. The welding head of the ultrasonic welding device is pressed against the position to be welded of the support mesh 2, that is, pressed against the edge of the support mesh 2, and the support mesh 2 is welded to the central tube 3 or the filter element 1.

[0082] In this embodiment, ultrasonic welding can be used to complete the welding process of the support net 2 and the central tube 3 in a very short time, thereby improving the production efficiency of the filter element. In addition, ultrasonic welding can be used to weld the support net 2 and the central tube 3 or the filter element 1 together even if the materials of the support net 2 and the central tube 3 or the filter element 1 are different.

[0083] At the same time, ultrasonic welding can achieve good sealing between the support net 2 and the central tube 3 or the filter element 1, thereby preventing fluid from leaking between the support net 2 and the central tube 3 or the filter element 1.

[0084] In addition, during the ultrasonic welding process, the welding head can contact the two edges of the support mesh 2 at the same time, so as to weld the two edges of the support mesh 2 to the central tube 3 at the same time, thereby further improving the production efficiency of the filter element.

[0085] In some embodiments provided by the present invention, the filter element 1 and the support net 2 are stacked and wrapped around the outside of the central tube 3. Then, the two edges of the support net 2 and the two edges of the filter element 1 are welded to the central tube 3 by ultrasonic welding.

[0086] Specifically, after the filter element 1 and the support net 2 are wrapped around the outside of the central tube 3, the edges of the first sides of the support net 2 and the filter element 1 are stacked, and the edges of the second sides of the support net 2 and the filter element 1 are also stacked. The edges of the first sides of the support net 2 and the filter element 1 can be welded to the central tube 3 at the same time first, and then the edges of the second sides of the support net 2 and the filter element 1 can be welded to the central tube 3 at the same time.

[0087] Alternatively, after the filter element 1 and the support net 2 are wrapped around the outside of the central tube 3, the edges of the support net 2 and the filter element 1 on the first side are stacked, and the edges of the support net 2 and the filter element 1 on the second side are also stacked, and the two edges of the support net 2 and the two edges of the filter element 1 can be welded to the central tube 3 at the same time.

[0088] In this embodiment, the filter element 1 and the support mesh 2 can be welded to the central tube 3 at the same time, thereby improving the production efficiency of the filter element.

[0089] In some embodiments provided by the present invention, reference Figure 1 As shown, one end of the central tube 3 protrudes from the first cylindrical structure, and a sealing ring groove 301 is provided on the outer circumferential wall of the protruding part of the central tube 3.

[0090] Correspondingly, the two ends of the first cylindrical structure formed by surrounding the filter element 1 are connected to the central tube 3, and the two ends of the second cylindrical structure formed by surrounding the support net 2 are connected to the central tube 3, including:

[0091] By ultrasonic welding, the ends of the first cylindrical structure and the second cylindrical structure close to the sealing ring groove 301 are connected to the central tube 3. And the ends of the first cylindrical structure, the second cylindrical structure and the central tube 3 away from the sealing ring groove 301 are all placed in the end cover 4 provided with glue.

[0092] Specifically, the mold of the ultrasonic welding device is extended into the central tube 3, and the position to be welded is welded. The welding head of the ultrasonic welding device is arranged along the circumference of the central tube 3 and pressed against the outside of the second cylindrical structure, and then the ends of the first cylindrical structure and the second cylindrical structure close to the sealing ring groove 301 are simultaneously connected to the central tube 3, so that the connection efficiency between the filter element 1 and the support net 2 and the central tube 3 can be improved.

[0093] The ends of the first cylindrical structure, the second cylindrical structure and the central tube 3 that are away from the sealing ring groove 301 are placed in the end cap 4 provided with glue, so that any two of the first cylindrical structure, the second cylindrical structure, the central tube 3 and the end cap 4 are bonded and connected. In this way, by providing the end cap 4, the support member, the filter member 1 and the central tube 3 can be connected, and the port of the central tube 3 away from the sealing ring groove 301 can be blocked, so that only the port of the central tube 3 close to the sealing ring groove 301 can be used for fluid discharge.

[0094] Of course, the end of the central tube 3 away from the sealing ring groove 301 is not limited to being blocked by the end cover 4. For example, Figure 4 As shown, in other embodiments provided by the present invention, one end of the center tube 3 protrudes from the first cylindrical structure, a sealing ring groove 301 is provided on the outer circumferential wall of the protruding part of the center tube 3, and one end of the center tube 3 away from the sealing ring groove 301 is closed.

[0095] Correspondingly, the two ends of the first cylindrical structure formed by surrounding the filter element 1 are connected to the central tube 3, and the two ends of the second cylindrical structure formed by surrounding the support net 2 are connected to the central tube 3, including:

[0096] Both ends of the first tubular structure and both ends of the second tubular structure are connected to the central tube 3 by ultrasonic welding.

[0097] Specifically, the mold of the ultrasonic welding device is extended into the central tube 3, and the position to be welded is supported. The welding head of the ultrasonic welding device is arranged along the circumference of the central tube 3, and pressed against the outer circumferential surface of the second cylindrical structure, and then the ends of the first cylindrical structure and the second cylindrical structure close to the sealing ring groove 301 are connected to the central tube 3 at the same time, and the ends of the first cylindrical structure and the second cylindrical structure away from the sealing ring groove 301 are connected to the central tube 3 at the same time, so that the connection efficiency between the filter element 1 and the support net 2 and the central tube 3 can be improved.

[0098] The present invention also provides a filter element in an embodiment. For example, the filter element can be processed by the filter element processing method described above.

[0099] Specifically, the filter element includes a central tube 3 , a filter element 1 and a support net 2 .

[0100] The filter element 1 is disposed around the outside of the central tube 3 along the circumference of the central tube 3. Both edges of the filter element 1 extending along the axial direction of the central tube 3 are connected to the central tube 3, and both ends of the first cylindrical structure formed by the filter element 1 are connected to the central tube 3.

[0101] The support net 2 is arranged around the outside of the filter element 1 along the circumference of the central tube 3. Both edges of the support net 2 extending along the axial direction of the central tube 3 are connected to the central tube 3, and both ends of the second cylindrical structure formed by the support net 2 are connected to the central tube 3. The support net 2 can be directly connected to the outer circumferential surface of the central tube 3, or connected to the outer circumferential surface of the filter element 1, that is, connected to the central tube 3 through the filter element 1.

[0102] In this embodiment, the filter element 1 and the support net 2 are wrapped around the surface of the central tube 3 and connected to the central tube 3. During the winding process, the filter element 1 and the central tube 3, as well as the support net 2 and the filter element 1 can be better fitted, thereby solving or improving the problem in the related art that it is often difficult to achieve size matching between the filter element 1 and the central tube 3, as well as between the support net 2 and the filter element 1.

[0103] Such a configuration can, on the one hand, reduce the difficulty of assembling the filter element, and on the other hand, the filter element 1 is evenly stressed between the central tube 3 and the support net 2, and is not easy to fluctuate or swing under the action of the fluid, which can avoid the problem of local wear or tear of the filter element 1 during long-term operation. On the other hand, the support net 2 is also evenly stressed, which can avoid the problem of deformation of the support net 2 due to uneven stress, thereby affecting the stability and service life of the filter element.

[0104] In addition, there is a connection area extending along the axial direction of the center tube 3 between the filter element 1 or the support net 2 and the center tube 3, and there is also a connection area extending along the circumferential direction of the center tube 3 between the filter element 1 or the support net 2 and the center tube 3. By setting the connection area in both the axial and circumferential directions, the stress can be distributed more evenly, avoiding stress concentration in one direction, thereby reducing material fatigue and damage caused by stress concentration.

[0105] In some embodiments provided by the present invention, both edges of the filter element 1 are connected to the central tube 3 by ultrasonic welding. Specifically, the filter element 1 can be welded by an ultrasonic welding device, for example, the mold of the ultrasonic welding device can extend into the central tube 3 and support the position to be welded. The welding head of the ultrasonic welding device is pressed against the position to be welded of the filter element 1, that is, pressed against the edge of the filter element 1, and the filter element 1 is welded to the central tube 3.

[0106] In this embodiment, ultrasonic welding can be used to complete the welding process of the filter element 1 and the central tube 3 in a very short time, thereby improving the production efficiency of the filter element. Furthermore, ultrasonic welding can be used to weld the filter element 1 and the central tube 3 together even if the filter element 1 and the central tube 3 are made of different materials.

[0107] At the same time, ultrasonic welding can achieve good sealing between the filter element 1 and the central tube 3 to prevent fluid from leaking between the filter element 1 and the central tube 3 .

[0108] In addition, during the ultrasonic welding process, the welding head can contact the two edges of the filter element 1 at the same time, so as to weld the two edges of the filter element 1 to the central tube 3 at the same time, thereby further improving the production efficiency of the filter element.

[0109] In some embodiments provided by the present invention, both edges of the support mesh 2 are connected to the central tube 3 by ultrasound. Specifically, the support mesh 2 can be welded by an ultrasonic welding device, for example, the mold of the ultrasonic welding device can be extended into the central tube 3 and support the position to be welded. The welding head of the ultrasonic welding device is pressed tightly on the position to be welded of the support mesh 2, that is, pressed tightly on the edge of the support mesh 2, and the support mesh 2 is welded to the central tube 3 or the filter element 1.

[0110] In this embodiment, ultrasonic welding can be used to complete the welding process of the support net 2 and the central tube 3 in a very short time, thereby improving the production efficiency of the filter element. In addition, ultrasonic welding can be used to weld the support net 2 and the central tube 3 or the filter element 1 together even if the materials of the support net 2 and the central tube 3 or the filter element 1 are different.

[0111] At the same time, ultrasonic welding can achieve good sealing between the support net 2 and the central tube 3 or the filter element 1, thereby preventing fluid from leaking between the support net 2 and the central tube 3 or the filter element 1.

[0112] In addition, during the ultrasonic welding process, the welding head can contact the two edges of the support mesh 2 at the same time, so as to weld the two edges of the support mesh 2 to the central tube 3 at the same time, thereby further improving the production efficiency of the filter element.

[0113] In some embodiments provided by the present invention, one end of the central tube 3 protrudes from the first cylindrical structure, and a sealing ring groove 301 is provided on the outer circumferential wall of the protruding portion of the central tube 3 .

[0114] The filter element further comprises an end cover 4 , and ends of the first cylindrical structure, the second cylindrical structure and the central tube 3 which are away from the sealing ring groove 301 are all placed in the end cover 4 and bonded to the end cover 4 .

[0115] Specifically, the mold of the ultrasonic welding device is extended into the central tube 3, and the position to be welded is welded. The welding head of the ultrasonic welding device is arranged along the circumference of the central tube 3 and pressed against the outside of the second cylindrical structure, and then the ends of the first cylindrical structure and the second cylindrical structure close to the sealing ring groove 301 are simultaneously connected to the central tube 3, so that the connection efficiency between the filter element 1 and the support net 2 and the central tube 3 can be improved.

[0116] Place the ends of the first cylindrical structure, the second cylindrical structure and the central tube 3 away from the sealing ring groove 301 into the end cover 4 provided with glue, so that any two of the first cylindrical structure, the second cylindrical structure, the central tube 3 and the end cover 4 are bonded and connected.

[0117] In this way, by setting the end cover 4, the support member, the filter element 1 and the central tube 3 can be connected, and the port of the central tube 3 away from the sealing ring groove 301 can be blocked, so that only the port of the central tube 3 close to the sealing ring groove 301 can be used for fluid discharge.

[0118] Optionally, refer to Figure 1 As shown, the end cover 4 includes an annular plate and a cover plate, and the cover plate is sealed at one end of the annular plate. A convex portion protruding toward the central tube 3 is provided on the inner side of the cover plate, and the central tube 3, the first cylindrical structure and the second cylindrical structure all extend between the convex portion and the annular plate.

[0119] With such a configuration, the center tube 3, the first cylindrical structure and the second cylindrical structure can be connected by only filling the space between the protrusion and the annular plate with glue. Compared with the overall volume of the end cover 4, the volume of the space between the protrusion and the annular plate is smaller, so the amount of glue used can be reduced.

[0120] On the other hand, the raised portion is equivalent to a reinforcing rib provided on the cover plate, which can improve the strength of the cover plate, thereby improving the supporting effect of the cover plate on the central tube 3, the first cylindrical structure and the second cylindrical structure, and further improving the overall strength of the filter element.

[0121] In some embodiments provided by the present invention, one end of the center tube 3 protrudes from the first cylindrical structure, a sealing ring groove 301 is provided on the outer circumferential wall of the protruding part of the center tube 3, and the end of the center tube 3 away from the sealing ring groove 301 is closed, and both ends of the first cylindrical structure and both ends of the second cylindrical structure are connected to the center tube 3 by ultrasonic welding.

[0122] Specifically, the mold of the ultrasonic welding device is extended into the central tube 3, and the position to be welded is supported. The welding head of the ultrasonic welding device is arranged along the circumference of the central tube 3, and pressed against the outer circumferential surface of the second cylindrical structure, and then the ends of the first cylindrical structure and the second cylindrical structure close to the sealing ring groove 301 are connected to the central tube 3 at the same time, and the ends of the first cylindrical structure and the second cylindrical structure away from the sealing ring groove 301 are connected to the central tube 3 at the same time, so that the connection efficiency between the filter element 1 and the support net 2 and the central tube 3 can be improved.

[0123] Optionally, the end of the central tube 3 away from the sealing ring groove 301 can be closed by a sealing plate. For example, the sealing plate and the central tube 3 can be set as an integral structure.

[0124] A filtering device is also provided in an embodiment of the present invention.

[0125] Specifically, the filtering device includes a housing 5 , an exhaust pipe 6 , a safety filter element and a main filter element 7 .

[0126] The outer shell 5 is a cylindrical structure. An air inlet 501 is arranged on the side wall of the outer shell 5 , and an air outlet 502 is arranged at one end of the outer shell 5 .

[0127] The exhaust pipe 6 extends into the interior of the housing 5 through the exhaust port 502 .

[0128] The safety filter element is set as a filter element processed by the filter element processing method as described above, or is set as the filter element as described above. The central tube 3 is plugged into the exhaust pipe 6, for example, the central tube 3 is inserted into the exhaust pipe 6. The sealing ring groove 301 of the central tube 3 is arranged opposite to the exhaust pipe 6, and a sealing member is arranged in the sealing ring groove 301 to seal the gap between the central tube and the exhaust pipe.

[0129] The main filter element 7 is sleeved on the outside of the safety filter element, and the main filter element 7 is plugged with the exhaust pipe 6. For example, the exhaust pipe 6 is inserted into the inside of the main filter element 7, and a seal is provided between the exhaust pipe 6 and the main filter element 7.

[0130] In this embodiment, the filter device uses the filter element provided in the embodiment of the present invention, and also includes the above-mentioned advantages of the filter element.

[0131] During use of the filtering device provided in this embodiment, gas enters the housing 5 through the air inlet 501, is filtered by the main filter element 7 and the safety filter element in sequence, and is then discharged through the exhaust pipe 6.

[0132] refer to Figure 6-Figure 8 As shown, in some embodiments provided by the present invention, the housing 5 is provided with an exhaust port 502 and a snap-fit ​​sleeve 503 .

[0133] The side wall of the clamping sleeve 503 is provided with at least two through grooves 5031 arranged along the circumferential direction, the through grooves 5031 are arranged through the wall thickness direction of the clamping sleeve 503, and the through grooves 5031 penetrate the two ends of the clamping sleeve 503 along the axial direction of the clamping sleeve 503. The outer circumferential wall of the exhaust pipe 6 is provided with a clamping ring groove 601, and the clamping sleeve 503 is clamped in the clamping ring groove 601.

[0134] In this embodiment, at least two through grooves 5031 are provided on the side wall of the clamping sleeve 503, and the through grooves 5031 can divide the clamping sleeve 503 into at least two arc-shaped pieces. During the installation of the exhaust pipe 6, the exhaust pipe 6 is inserted into the clamping sleeve 503. When the clamping sleeve 503 abuts against the side wall of the clamping ring groove 601, the arc-shaped pieces are deformed outward until the clamping sleeve 503 is inserted into the clamping ring groove 601 of the exhaust pipe 6, and the arc-shaped pieces recover their deformation and are clamped in the clamping ring groove 601.

[0135] Such arrangement, on the one hand, can make the exhaust pipe 6 easy to disassemble and replace, for example, when the exhaust pipe 6 is damaged or needs to be replaced with a different type of exhaust pipe 6, it can be easily replaced.

[0136] On the other hand, by means of snap-on connection, the exhaust pipe 6 can be installed without using tools, making the installation more convenient.

[0137] On the other hand, the snap ring groove 601 can rotate relative to the snap sleeve 503. For example, when the exhaust pipe 6 is set as a curved pipe, the bending direction of the exhaust pipe 6 can be conveniently adjusted to facilitate docking of the exhaust pipe 6 with corresponding components.

[0138] Optionally, the snap-fit ​​sleeve 503 may extend toward the inside of the housing 5 to fully utilize the internal space of the housing 5 , thereby making the overall structure of the filtering device more compact.

[0139] Optionally, the exhaust port 502 of the housing 5 is further provided with a connecting sleeve 505 and a connecting ring 504. The connecting sleeve 505 is connected to the end surface of the housing 5, for example, the connecting sleeve 505 protrudes from the outer end surface of the housing 5. The clamping sleeve 503 is arranged on the inner side of the connecting sleeve 505, and there is a distance between the clamping sleeve 503 and the connecting sleeve 505. The connecting ring 504 is connected between the clamping sleeve 503 and the connecting sleeve 505. The housing 5, the connecting sleeve 505, the connecting ring 504 and the clamping sleeve 503 are arranged as an integrated structure.

[0140] Optionally, along the radial direction of the clamping sleeve 503, the through groove 5031 extends to the connecting ring 504, so that the clamping sleeve 503 can produce a larger deformation, so as to facilitate the installation of the exhaust pipe 6. In addition, the through groove 5031 is arranged on the connecting ring 504, which will not affect the structural strength of the end face of the shell 5, thereby ensuring the strength of the end face of the shell 5.

[0141] refer to Figure 6-Figure 8 As shown, in some embodiments provided by the present invention, a first baffle ring 8 is provided inside the housing 5. The first baffle ring 8 is sleeved on the outside of the main filter element 7, and one end of the first baffle ring 8 is connected to one end of the housing 5 provided with an exhaust port 502. There is a gap between the first baffle ring 8 and the inner wall of the housing 5, and the air inlet 501 corresponds to the space between the first baffle ring 8 and the inner wall of the housing 5.

[0142] In this embodiment, a first baffle ring 8 is arranged inside the outer shell 5, and the air inlet 501 corresponds to the space between the first baffle ring 8 and the inner wall of the outer shell 5. Through the blocking effect of the first baffle ring 8, the gas entering the air inlet 501 will not directly blow the main filter element 7, so as to avoid the problem that the main filter element 7 will fall over and fold, thereby affecting the filtering performance.

[0143] At the same time, the guiding effect of the first retaining ring 8 can extend the flow path of the airflow in the filter device, so that the particles in the airflow can be settled and separated during the flow of the airflow, thereby extending the service life of the main filter element 7.

[0144] Further, refer to Figure 6 As shown, the axis of the air inlet 501 is staggered from the axis of the first baffle ring 8, that is, the air inlet 501 is eccentrically arranged relative to the first baffle ring 8, so that the airflow entering from the air inlet 501 can enter between the first baffle ring 8 and the inner wall of the outer shell 5 along the tangent direction of the first baffle ring 8, thereby rotating around the first baffle ring 8, and then under the action of centrifugal force, the particles in the airflow are settled and separated, so as to extend the service life of the main filter element 7.

[0145] refer to Figure 6-Figure 8As shown, in some embodiments provided by the present invention, the central tube 3 is inserted into the exhaust pipe 6, and at least two stoppers 602 distributed along the circumference of the central tube 3 are provided on the inner wall of the exhaust pipe 6, and the stoppers 602 extend along the axial direction of the central tube 3. One end of the central tube 3 extending into the exhaust pipe 6 abuts against the stopper 602, and the stopper 602 limits the central tube 3.

[0146] In this embodiment, the central tube 3 is inserted into the exhaust pipe 6, and a stopper 602 for limiting the central tube 3 is provided on the inner wall of the exhaust pipe 6, so that the central tube 3 can be prevented from being inserted into the exhaust pipe 6 too deeply.

[0147] For example, refer to Figure 6 As shown, when the exhaust pipe 6 is configured as a bend pipe, the bend pipe has a vertical pipe and a horizontal pipe, and the limiter 602 can prevent the central pipe 3 from being inserted too deeply into the vertical pipe and intersecting with the horizontal pipe, thereby blocking the horizontal pipe and affecting the exhaust effect.

[0148] In addition, the stopper 602 extends along the axial direction of the central tube 3, so the airflow is less obstructed. Finally, the stopper 602 can actually serve as a reinforcing rib of the exhaust pipe 6, thereby improving the strength of the exhaust pipe 6.

[0149] refer to Figure 6 and Figure 7 As shown, a second baffle ring 9 is provided inside the housing 5 .

[0150] The second baffle ring 9 is sleeved on the outside of the main filter element 7, and the second baffle ring 9 is connected to the end of the outer shell 5 facing away from the exhaust port 502. There is a distance between the second baffle ring 9 and the inner wall of the outer shell 5. The outer shell 5 is also provided with a discharge port 506, and the discharge port 506 corresponds to the space between the second baffle ring 9 and the inner wall of the outer shell 5, that is, the discharge port 506 is connected to the space between the second baffle ring 9 and the inner wall of the outer shell 5.

[0151] In this embodiment, when the airflow runs around the outer wall of the first baffle ring 8, the particles in the airflow settle and fall into the space between the second baffle ring 9 and the inner wall of the housing 5. Since the discharge port 506 is connected to the inner wall of the second baffle ring 9 and the housing 5, the particles between the second baffle ring 9 and the inner wall of the housing 5 can be discharged from the discharge port 506. In this way, the particles can be discharged conveniently and the particles can be prevented from accumulating on the outer side of the main filter element 7 and clogging the main filter element 7.

[0152] In addition, the second retaining ring 9 can position and guide the main filter element 7, thereby facilitating the installation and fixation of the main filter element 7.

[0153] Optionally, a dust bag 10 may be provided at the discharge port 506 , and the dust bag 10 is used to collect particles discharged from the discharge port 506 .

[0154] Optionally, the housing 5 includes a first cylinder 507 and a second cylinder 508 .

[0155] The first barrel 507 and the second barrel 508 are both configured as a cylindrical structure with one end closed and the other end open. The openings of the first barrel 507 and the second barrel 508 are butted, for example, the two are detachably connected. The air inlet 501 is arranged on the end face of the first barrel 507 facing away from the second barrel 508, and the exhaust port 502 is arranged on the side wall of the first barrel 507. The exhaust port 506 is arranged on the side wall of the second barrel 508. The first baffle ring 8 is connected to the first barrel 507, and the second baffle ring 9 is connected to the second barrel 508.

[0156] Optionally, the filtering device provided by the present invention may be an air filter of an engine.

[0157] An embodiment of the present invention further provides a working machine.

[0158] Specifically, the operating machine includes a filter element processed by the filter element processing method as described above, a filter element as described above, or a filtering device as described above.

[0159] It should be noted that the operating machinery includes a filter element or a filter device, and also includes all the above-mentioned advantages of the filter element or the filter device, so it will not be elaborated on.

[0160] Meanwhile, it should be noted that the operating machinery may be, but is not limited to, an excavator, a loader, a pile driver or a crane.

[0161] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A filter element processing method, It is characterized in that include: Providing a sheet-shaped filter element (1) and a sheet-shaped support net (2); Along the circumference of the central tube (3), the filter element (1) is surrounded on the outside of the central tube (3), and the support net (2) is surrounded on the outside of the filter element (1); The two edges of the filter element (1) extending in the axial direction of the central tube (3) are connected to the central tube (3), and the two edges of the support net (2) extending in the axial direction of the central tube (3) are connected to the central tube (3); The two ends of a first cylindrical structure formed by surrounding the filter element (1) are connected to the central tube (3), and the two ends of a second cylindrical structure formed by surrounding the support net (2) are connected to the central tube (3).

2. The filter element processing method according to claim 1, It is characterized in that The filter element (1) is surrounded on the outside of the central tube (3), and the support net (2) is surrounded on the outside of the filter element (1), comprising: stacking the filter element (1) and the support net (2), and surrounding the filter element (1) and the support net (2) on the outside of the central tube (3); and / or, connecting two edges of the filter element (1) extending along the axial direction of the central tube (3) to the central tube (3), comprising: connecting the two edges of the filter element (1) to the central tube (3) by ultrasonic welding; And / or, connecting two edges of the support net (2) extending along the axial direction of the central tube (3) to the central tube (3), comprising: connecting the two edges of the support net (2) to the central tube (3) by ultrasonic welding.

3. The filter element processing method according to claim 1 or 2, It is characterized in that One end of the central tube (3) protrudes from the first cylindrical structure, and a sealing ring groove (301) is provided on the outer circumferential wall of the protruding portion of the central tube (3); Correspondingly, the two ends of the first cylindrical structure formed by surrounding the filter element (1) are connected to the central tube (3), and the two ends of the second cylindrical structure formed by surrounding the support net (2) are connected to the central tube (3), comprising: By ultrasonic welding, the ends of the first cylindrical structure and the second cylindrical structure close to the sealing ring groove (301) are both connected to the central tube (3); Furthermore, the ends of the first cylindrical structure, the second cylindrical structure and the central tube (3) facing away from the sealing ring groove (301) are all placed in an end cover (4) provided with glue.

4. The filter element processing method according to claim 1 or 2, It is characterized in that One end of the central tube (3) protrudes from the first cylindrical structure, a sealing ring groove (301) is provided on the outer circumferential wall of the protruding portion of the central tube (3), and one end of the central tube (3) away from the sealing ring groove (301) is closed; Correspondingly, the two ends of the first cylindrical structure formed by surrounding the filter element (1) are connected to the central tube (3), and the two ends of the second cylindrical structure formed by surrounding the support net (2) are connected to the central tube (3), comprising: Both ends of the first tubular structure and both ends of the second tubular structure are connected to the central tube (3) by ultrasonic welding.

5. A filter element, It is characterized in that include: Central tube (3); A filter element (1) is arranged around the outer side of the central tube (3) along the circumference of the central tube (3); both edges of the filter element (1) extending along the axial direction of the central tube (3) are connected to the central tube (3); and both ends of the first cylindrical structure formed by the filter element (1) are connected to the central tube (3); A support net (2) is arranged around the outside of the filter element (1) along the circumference of the central tube (3); both edges of the support net (2) extending along the axial direction of the central tube (3) are connected to the central tube (3); and both ends of the second cylindrical structure formed by the support net (2) are connected to the central tube (3).

6. The filter element according to claim 5, It is characterized in that Both edges of the filter element (1) are connected to the central tube (3) by ultrasonic welding; And / or, both edges of the support net (2) are connected to the central tube (3) via ultrasound.

7. The filter element according to claim 5 or 6, It is characterized in that One end of the central tube (3) protrudes from the first cylindrical structure, and a sealing ring groove (301) is provided on the outer circumferential wall of the protruding portion of the central tube (3). The filter element further comprises an end cover (4), and the first cylindrical structure, the second cylindrical structure and one end of the central tube (3) away from the sealing ring groove (301) are all placed in the end cover (4) and bonded to the end cover (4); Alternatively, one end of the center tube (3) protrudes from the first cylindrical structure, a sealing ring groove (301) is provided on the outer circumferential wall of the protruding portion of the center tube (3), one end of the center tube (3) away from the sealing ring groove (301) is closed, and both ends of the first cylindrical structure and both ends of the second cylindrical structure are connected to the center tube (3) by ultrasonic welding.

8. A filtering device, It is characterized in that include: The outer shell (5) is configured as a cylindrical structure, the side wall of the outer shell (5) is provided with an air inlet (501), and one end of the outer shell (5) is provided with an air outlet (502); an exhaust pipe (6) extending into the interior of the housing (5) through the exhaust port (502); The safety filter element is a filter element processed by the filter element processing method according to any one of claims 1 to 4, or a filter element according to any one of claims 5 to 7, wherein the central pipe (3) is plugged into the exhaust pipe (6); A main filter element (7) is sleeved on the outside of the safety filter element, and the main filter element (7) is plugged into the exhaust pipe (6).

9. The filtering device according to claim 8, It is characterized in that The exhaust port (502) of the housing (5) is provided with a clamping sleeve (503), and the side wall of the clamping sleeve (503) is provided with at least two through grooves (5031) arranged along the circumferential direction, and the through grooves (5031) are arranged to penetrate along the wall thickness direction of the clamping sleeve (503), and the through grooves (5031) penetrate through both ends of the clamping sleeve (503) along the axial direction of the clamping sleeve (503), and the outer circumferential wall of the exhaust pipe (6) is provided with a clamping ring groove (601), and the clamping sleeve (503) is clamped in the clamping ring groove (601); And / or, a first baffle ring (8) is provided inside the housing (5), the first baffle ring (8) is sleeved on the outer side of the main filter element (7), and one end of the first baffle ring (8) is connected to one end of the housing (5) provided with the exhaust port (502), there is a distance between the first baffle ring (8) and the inner wall of the housing (5), and the air inlet (501) corresponds to the space between the first baffle ring (8) and the inner wall of the housing (5); And / or, the center tube (3) is inserted into the exhaust pipe (6), and at least two limiting members (602) are provided on the inner wall of the exhaust pipe (6) and are distributed along the circumference of the center tube (3), and the limiting members (602) extend along the axial direction of the center tube (3), and one end of the center tube (3) extending into the exhaust pipe (6) abuts against the limiting member (602), and the limiting member (602) limits the center tube (3).

10. The filtering device according to claim 9, It is characterized in that A second baffle ring (9) is provided inside the outer shell (5), the second baffle ring (9) is sleeved on the outer side of the main filter element (7), the second baffle ring (9) is connected to an end of the outer shell (5) away from the exhaust port (502), and there is a distance between the second baffle ring (9) and the inner wall of the outer shell (5). The outer shell (5) is also provided with an exhaust port (506), and the exhaust port (506) corresponds to the space between the second baffle ring (9) and the inner wall of the outer shell (5).

11. A working machine, It is characterized in that It comprises a filter element processed by the filter element processing method according to any one of claims 1 to 4, a filter element according to any one of claims 5 to 7, or a filtering device according to any one of claims 8 to 10.

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