A stretch resistant high performance filter bag

Abstract

The application relates to the technical field of industrial filter bags, and provides a stretch-resistant high-performance filter bag, which comprises a filter bag body, a first filter cover detachably mounted at one end of the filter bag body, a second filter cover detachably mounted at the other end of the filter bag body, a stretch-resistant rod connected between two nuts and penetrating the axis of the filter bag body, a waste gas injection port connected inward from the periphery of the filter bag body and having an outer end protruding outward and an inner end communicating with the inner cavity of the filter bag body, and a flexible rod connected to the outer end protruding wall of the waste gas injection port. The automatic cleaning action is automatically realized through a series of actions triggered by the falling of the pressure ring on the trigger when the filter bag body is no longer inflated with waste gas, so that the filter holes on the filter bag body can be automatically cleaned at a long distance. In the cleaning process, no additional electric components are added, and manual shaking is not needed, so that close-range respiratory tract infection is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial filter bag, in particular to a kind of anti-stretching high-performance filter bag. BACKGROUND

[0002] Industrial filter bag is widely used, commonly used in cloth bag dust collector, woodworking sawing industry, the former is suspended in dust chamber by keel through multiple dust cloth bag, when external exhaust gas enters the cabin, dust is intercepted by cloth bag, purify air is discharged, the latter is connected through a pipeline next to sawing machine by filter cloth bag, sawdust dust generated in sawing process enters cloth bag along the pipeline, purify gas passes through the filter hole on cloth bag and is discharged, to achieve the purpose of purifying environment.

[0003] However, in woodworking processing, the generated wood dust has adsorption, and will be adsorbed on the cloth bag when intercepted by dust cloth bag, resulting in slow clogging of filter hole, the traditional cleaning method is manual shaking, although the mesh hole can be cleaned when manual shaking, but the new dust produced when shaking will directly enter the respiratory tract and cause infection, therefore, how to clean the mesh hole on the filter bag in a remote way is a problem to be solved in the current wood board processing. SUMMARY

[0004] The technical problem to be solved by the present application is to automatically clean the clogged filter hole after each use of the filter bag by automatic knocking, which not only ensures the cleaning of the filter hole, but also increases the distance between the filter bag and the operator during cleaning, thereby improving the cleaning efficiency and preventing respiratory tract infection.

[0005] The technical scheme of the present application is a kind of anti-stretch high-performance filter bag, including filter bag main body, the one end of filter bag main body is detachably installed with first filter cover, the other end of filter bag main body is detachably installed with second filter cover, nut is fixed on first filter cover and second filter cover, anti-tension rod is connected between two nuts, the axis of inside through filter bag main body, waste gas injection port is connected from the periphery of filter bag main body to inside, and the outer end of waste gas injection port is outwardly protruding, and the inner end is communicated with the inner chamber of filter bag main body, flexible rod is connected on the outer end protruding wall of waste gas injection port, flexible rod gradually inclines from the outer end protruding of waste gas injection port to the middle direction of the outer wall of filter bag main body, and pressure ring is connected on the inclined end of flexible rod, pressure ring is arc, and the inner arc surface of pressure ring is contacted on the outer wall of filter bag main body, fixed sleeve is fixed on anti-tension rod, rotating groove is formed in the middle part of fixed sleeve, trigger can be rotated clockwise and counterclockwise is connected in rotating groove, opening part is formed in the end of fixed sleeve facing second filter cover and communicated with its inner chamber, one end of trigger passes through rotating groove, and after bending upward, it enters filter bag main body and is directed to the inside of pressure ring, the other end of trigger is arranged outside opening part and is provided with hooking part, knocking part is arranged in the inner chamber of filter bag main body and elastically connected to second filter cover, knocking part is annular, and slidingly sleeved on the outside of anti-tension rod, one side of knocking part is directed to second filter cover, the other side of knocking part is directed to fixed sleeve, when knocking part is close to fixed sleeve along anti-tension rod, it is hung on trigger by hooking part, when trigger is rotated counterclockwise, hooking part is separated from knocking part, under the action of elastic force, knocking part slides along anti-tension rod and quickly hits the inner wall surface of second filter cover, so that second filter cover drives filter bag main body to vibrate.

[0006] As further preferred, the two ends of the anti-tension rod are provided with external threads connected with the nuts on the first filter cover and the second filter cover, the middle part of the anti-tension rod is a light axis, the fixed sleeve is fixed on the light axis, and the knocking part is slidingly fitted on the light axis.

[0007] As further preferred, the first filter cover and the second filter cover each include a bag filter cloth connected to the end of the filter bag main body at the periphery and a metal filter plate for fixing the nut at the inner periphery, the mesh number of the bag filter cloth is consistent with the mesh number of the filter bag main body, and the mesh number of the metal filter plate is consistent with the mesh number of the filter bag main body.

[0008] As further preferred, the fixed sleeve is a conical cover structure, the end of the fixed sleeve facing the first filter cover is fixedly connected with the anti-tension rod, and the end of the fixed sleeve facing the first filter cover is provided with an exhaust hole communicated with the opening part of the other end of the second filter cover.

[0009] As a further preferred, the knocking piece is circular, including an inner circle, a middle circle and an outer circle, the inner circle is provided with a sliding hole for slidingly sleeving the optical axis part of the tensile rod, the middle circle is connected to the periphery of the inner circle through radial ribs, the outer circle is connected to the periphery of the middle circle through radial ribs, the inner circle is provided with a chamfer at one end facing the hooking part, the hooking part enters between the inner circle and the middle circle along the chamfer and is hung on the end surface of the inner circle facing the second filter cover, a pin shaft is fixed in the rotating groove, a torsion spring is sleeved on the pin shaft, and the two open ends of the torsion spring are connected between the trigger and the rotating groove, so as to ensure that the trigger is hooked on the inner circle through the hooking part after horizontally extending along the fixed sleeve, so that the knocking piece is positioned, and an elastic element is connected between the middle circle and the metal filter plate of the second filter cover, which can be a tension spring or an elastic drawstring, the elastic element is elongated and stores elastic force when the knocking piece is positioned by the hooking part of the trigger, and the trigger is curved upward along the rotating groove and is inclined toward the direction of the first filter cover when the knocking piece is positioned by the hooking part of the trigger.

[0010] As a further preferred, the compression ring is a solid rubber material, and the radial ribs connected between the middle circle and the outer circle are rubber rod materials.

[0011] As a further preferred, the compression ring is a solid rubber material, and the radial ribs connected between the middle circle and the outer circle are rubber rod materials.

[0012] As a further preferred, the first filter cover is provided with a first connecting ring between the inner end and the filter bag body, and the second filter cover is provided with a second connecting ring between the inner end and the filter bag body, and the diameters of the first connecting ring and the second connecting ring are greater than the diameter of the filter bag body.

[0013] As a further preferred, the exhaust gas inlet is located at one end of the inner cavity of the filter bag body and exceeds the inner wall of the filter bag body, and is perpendicular to the outer periphery of the tensile rod.

[0014] The beneficial effect of the present application compared with the prior art is that the knocking part is held along the outside of the filter bag body before inflation, the knocking part is hung on the hooking part of the trigger, after the filter bag body inflates and expands, the knocking part is also in the hung state, at the same time, the other side of the knocking part is far away from the linear orientation of the second filter cover, and is always kept in the current state, until the filter bag body is no longer inflated and quickly deflated, the pressing ring falls on one end of the trigger in the rotating groove, causing the trigger to quickly rotate counterclockwise, and under the counterclockwise rotation of the trigger, the hooking part at the other end of the trigger quickly separates from the knocking part, at this time, the knocking part is no longer restricted by the hooking part, and under the contraction elastic force of the elastic part, quickly hits the inner wall surface of the second filter cover along the anti-pulling rod, so that the second filter cover drives the filter bag body to vibrate, and the dust particles blocked in the filter bag body mesh during the dust filtering are vibrated and fallen down, the automatic cleaning action is automatically realized by a series of actions triggered by the falling of the pressing ring on the trigger when the filter bag body is no longer inflated with exhaust gas, so that the filter holes on the filter bag body achieve the purpose of automatic cleaning of the blockage at a long distance, and no additional electrical components are added during the cleaning process, and no manual shaking is needed, and no close-range respiratory tract infection is caused. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A front plane structure schematic diagram of a stretch-resistant high-performance filter bag provided for an embodiment of the present application;

[0016] Figure 2 A second structure schematic diagram of the stretch-resistant high-performance filter bag when cut open provided for an embodiment of the present application;

[0017] Figure 3 A stretch-resistant high-performance filter bag provided for an embodiment of the present application is Figure 2 A structure schematic diagram from another rotation angle;

[0018] Figure 4 A stretch-resistant high-performance filter bag provided for an embodiment of the present application is Figure 3 A structure schematic diagram from another angle and after cutting open the fixed sleeve knocking part;

[0019] Figure 5 A stretch-resistant high-performance filter bag provided for an embodiment of the present application is Figure 4 An A part enlarged structure schematic diagram;

[0020] Figure 6 A stretch-resistant high-performance filter bag provided for an embodiment of the present application is

[0021] Figure 7A schematic diagram of the anti-stretch high-performance filter bag provided by the embodiment of the present application when the anti-stretch rod is removed and the knocking piece moves towards the inner wall of the second filter cover;

[0022] Figure 8 A schematic diagram of the anti-stretch high-performance filter bag provided by the embodiment of the present application when it gradually shrinks when no longer injecting exhaust gas.

[0023] In the figure: 1, filter bag body; 2, first filter cover; 21, first connecting ring; 3, second filter cover; 31, second connecting ring; 4, nut; 5, anti-stretch rod; 6, exhaust gas injection port; 7, flexible rod; 8, compression ring; 81, first arc chamfer surface; 82, second arc chamfer surface; 9, fixed sleeve; 91, opening part; 92, exhaust hole; 10, rotating groove; 11, trigger; 12, hooking part; 13, knocking piece; 131, inner ring; 132, middle ring; 133, outer ring; 134, sliding hole; 135, chamfer; 14, bag filter cloth; 15, metal filter plate; 16, pin shaft; 17, torsional spring; 18, elastic member. DETAILED DESCRIPTION

[0024] The above and other embodiments and advantages of the present application are more fully described below in conjunction with the attached drawings. It is obvious that the described embodiments are only some embodiments of the present application, not all embodiments.

[0025] In an embodiment, as Figures 1-8 shown.

[0026] The anti-stretch high-performance filter bag provided by the embodiment includes a filter bag body 1, one end of the filter bag body 1 is detachably mounted with a first filter cover 2, the other end of the filter bag body 1 is detachably mounted with a second filter cover 3, a nut 4 is fixed on each of the first filter cover 2 and the second filter cover 3, the nut 4 on the second filter cover 3 is inlaid in the second filter cover 3, an anti-stretch rod 5 penetrating the axis inside the filter bag body 1 is connected between the two nuts 4, the anti-stretch rod 5 is connected between the first filter cover 2 and the second filter cover 3, so as to be equivalent to setting a support in the filter bag body 1, and an exhaust gas injection port 6 with an outer end protruding outward and an inner end communicating with the inner cavity of the filter bag body 1 is connected inward from the periphery of the filter bag body 1.

[0027] In use, the exhaust gas enters the filter bag body 1 through the exhaust gas injection port 6, and the filter bag body 1 is inflated by air pressure to Figure 1 , Figure 2As shown, a portion of the exhaust gas is filtered through the filter bag body 1 and then discharged to the outside, while another portion of the exhaust gas is filtered through the first filter cover 2 and the second filter cover 3 and then discharged to the outside. Dust is trapped inside the filter bag body 1. Because there is a tensile rod 5 connecting the first filter cover 2 and the second filter cover 3, the size of the filter bag body 1 that is inflated by the exhaust gas is limited. This prevents the filter bag body 1 from bursting due to excessive expansion and extreme stretching at both ends. The tensile rod 5 improves the tensile strength of the filter bag body 1.

[0028] In this embodiment, a flexible rod 7 is connected to the outer protruding wall of the exhaust gas inlet 6. The flexible rod 7 gradually slopes from the outer protrusion of the exhaust gas inlet 6 toward the middle of the outer wall of the filter bag body 1. A pressure ring 8 is connected to the inclined end of the flexible rod 7. The pressure ring 8 is arc-shaped, and the inner arc surface of the pressure ring 8 contacts the outer wall of the filter bag body 1. When the filter bag body 1 expands due to the filling of exhaust gas, it pushes the pressure ring 8 upward along with the filter bag body 1 as shown in the figure. When the filter bag body 1 is no longer in use and no longer supplies exhaust gas to the filter bag body 1, the filter bag body 1 will close up due to its flexible filter bag structure. Figure 8 The shape shown quickly deflates, and the pressure ring 8 will then fall off. Based on this principle, as... Figures 2 to 7 As shown, since the tension rod 5 is fixed with a fixing sleeve 9, and the middle of the fixing sleeve 9 is provided with a rotating groove 10, a trigger 11 that can rotate clockwise and counterclockwise is connected in the rotating groove 10. At this time, the tension rod 5 will not bend freely when the filter bag body 1 collapses. Thus, under the support of the tension rod 5, the fixing sleeve 9 is fixed in position regardless of whether the filter bag body 1 collapses or not. That is, the position of the trigger 11 is fixed. Therefore, when the filter bag body 1 collapses due to no longer being filled with exhaust gas, the pressure ring 8 will fall down and eventually press on the trigger 11, triggering the trigger 11 to take action.

[0029] Based on the aforementioned principle and conditions of the falling action of the pressure ring 8, and considering that it can strike the trigger 11 upon falling and trigger 11 to activate, therefore, according to this principle, as Figures 2 to 6 As shown, the fixed sleeve 9 has an opening 91 communicating with its inner cavity at one end facing the second filter cover 3. One end of the trigger 11 passes through the rotating groove 10, bends upward, and enters the filter bag body 1, facing the direction of the inner side of the pressure ring 8. That is, this end of the trigger 11 corresponds to the direction of pressure when the pressure ring 8 falls. The other end of the trigger 11 passes outside the opening 91 and has a hook part 12. The inner cavity of the filter bag body 1 has a striking member 13 elastically connected to the second filter cover 3. When exhaust gas is injected into the filter bag body 1, the filter bag body 1 will expand, and under its expansion action, it will push the pressure ring 8 to... Figures 1 to 3In the shown position, before inflation, hold the knocking piece 13 along the outside of the filter bag body 1, and slide the knocking piece 13 to the side of the fixed sleeve 9 under the positioning guide of the anti-pulling rod 5, and finally hang the knocking piece 13 on the hooking part 12, after the inflation and expansion of the filter bag body 1, the knocking piece 13 is also in the hanging state, at the same time, the other side of the knocking piece 13 is away from the straight line direction of the second filter cover 3, and always remains in the current state, until the filter bag body 1 is no longer inflated and quickly deflated, the pressure ring 8 will fall onto one end of the trigger 11 in the rotating groove 10, causing the trigger 11 to quickly rotate counterclockwise, and under the counterclockwise rotation of the trigger 11, the hooking part 12 at the other end of the trigger 11 quickly separates from the knocking piece 13, at this time, the knocking piece 13 is no longer restricted by the hooking part 12, and under the contraction elastic force of the elastic piece 18, quickly hits the inner wall of the second filter cover 3 along the anti-pulling rod 5, so that the second filter cover 3 drives the filter bag body 1 to vibrate, and the dust particles blocked in the filter bag body 1 during the dust filtering process are shaken down, this automatic cleaning action is automatically realized by a series of actions triggered by the falling of the pressure ring 8 onto the trigger 11 when the filter bag body 1 is no longer inflated and deflated, the design is ingenious, and the filter holes (or mesh holes) on the filter bag body 1 can automatically clean the blockage at a long distance, without adding any electrical components during the cleaning process, and without manual shaking, which will not cause close-range infection of the respiratory tract. From the embodiment, the anti-pulling rod 5 has three effects, one effect of the anti-pulling rod 5 is to form a tension positioning on both ends of the filter bag body 1 by connecting the first filter cover 2 and the second filter cover 3 on both ends of the filter bag body 1, which can prevent the filter holes from becoming larger and causing filtering failure due to the extreme stretching of both ends of the filter bag body 1 when the filter bag body 1 is inflated, another effect of the anti-pulling rod 5 is to form an internal support in the axial direction of the filter bag body 1, which supports the upper half of the filter bag body 1 when the filter bag body 1 is inflated and becomes deflated, ensures the position of the trigger 11, and provides action positioning protection for the falling of the pressure ring 8 onto the trigger 11 to trigger the action of the trigger 11 when the filter bag body 1 becomes deflated, and the last effect of the anti-pulling rod 5 is to provide a guide action for the hanging of the knocking piece 13 on the hooking part 12 of the trigger 11 and the quick hitting of the knocking piece 13 on the second filter cover 3.

[0030] As Figures 2 to 4As shown, the two ends of the tensile rod 5 are provided with external threads for connecting with the nuts 4 on the first filter cover 2 and the second filter cover 3, the middle part of the tensile rod 5 is a light axis, the fixing sleeve 9 is fixed on the light axis, and the knocking piece 13 is slidingly fitted on the light axis. The first filter cover 2 and the second filter cover 3 can be removed from the two ends of the filter bag body 1, and can be separated from the two ends of the tensile rod 5 by rotating during removal, so that the filter bag body 1 can be uniformly discharged for cleaning the intercepted wood dust after long-term use. The first filter cover 2 and the second filter cover 3 each include a bag filter cloth 14 peripherally connected to the end of the filter bag body 1 and a metal filter plate 15 used for fixing the nut 4, the metal filter plate 15 provides conditions for the installation of the tensile rod 5, and also provides conditions for the strength tension of the two ends of the filter bag body 1, and the bag filter cloth 14 has the same effect as the filter bag body 1, that is, both are used for filtering exhaust gas, so the mesh count of the bag filter cloth 14, the mesh count of the metal filter plate 15, and the mesh count of the filter bag body 1 are consistent, such as Figure 8 As shown, when the filter bag body 1 is no longer filled with exhaust gas and becomes deflated, the bag filter cloth 14 on both sides will also be deflated, and when deflated, the metal filter plate 15 at both ends will not be deformed, so the tensile rod 5 connected between the two metal filter plates 15 will not be deformed, thereby ensuring that the trigger 11 on the tensile rod 5 is always in the extrusion orientation when the pressure ring 8 falls.

[0031] As shown, Figure 2 The fixing sleeve 9 is a conical cover structure, one end of the fixing sleeve 9 facing the first filter cover 2 is fixedly connected with the tensile rod 5, and the one end of the fixing sleeve 9 facing the first filter cover 2 is provided with an exhaust hole 92 in gas communication with an opening part 91 of the other end of the second filter cover 3. Although the trigger 11 is installed on the tensile rod 5 by installing the fixing sleeve 9, the installation of the fixing sleeve 9 will not hinder the flow of exhaust gas in the filter bag body 1 too much, and the exhaust gas will flow normally through the exhaust hole 92 when flowing in the filter bag body 1.

[0032] As shown, Figures 2 to 7 The specific structure of the knocking piece 13 is described as follows: the knocking piece 13 is circular and includes an inner ring 131, a middle ring 132, and an outer ring 133, the inner ring 131 is provided with a sliding hole 134 slidingly fitted on the light axis part of the tensile rod 5, the middle ring 132 is connected to the periphery of the inner ring 131 through a radial rib plate 19, the outer ring 133 is connected to the periphery of the middle ring 132 through another radial rib plate 19, and the one end of the inner ring 131 facing the hooking part 12 is provided with a chamfer 135, as shown in Figure 5As shown, the knocking piece 13 is hung on the hooking part 12 before the filter bag body 1 is filled with exhaust gas. The hooking principle is as follows: the operator holds the outer ring 133 of the knocking piece 13 from the outside of the filter bag body 1, pushes it to one end of the fixed sleeve 9, and makes the chamfer 135 on the inner ring 13 contact with the hooking part 12. The chamfer surface forces the hooking part 12 to rotate counterclockwise upward, and then the inner ring 131 is hung. The inner ring 131 is hung to constrain the knocking piece 13 near the fixed sleeve 9, and at the same time, the elastic piece 18 is elastically stretched and stores elastic force. The connection between the middle ring 132 and the metal filter plate 15 of the second filter cover 3 is provided with the elastic piece 18. The elastic piece 18 can be a tension spring or an elastic belt. When the knocking piece 13 is positioned by the hooking part 12 of the trigger 11, the elastic piece 18 is stretched and stores elastic force. After the knocking piece 13 is positioned and tightened by the hooking part 12 of the trigger 11, the other end of the trigger 11 is bent upward along the rotating groove 10 and enters the filter bag body 1. When the filter bag body 1 is filled with exhaust gas and expands to Figure 2 When the pressure ring 8 is pushed to the pressure direction position of the end of the trigger 11 in the rotating groove 10, and at this time, the end of the trigger 11 is just facing the direction of the first filter cover 2 and is just in the pressure direction position when the pressure ring 8 falls. When the filter bag body 1 is no longer filled with exhaust gas and quickly shrinks, the pressure ring 8 falls on the end of the trigger 11 and forms pressure on the trigger 11, so that the trigger 11 rotates counterclockwise, and the hooking part 12 of the trigger 11 is separated from the inner ring 131. The elastic piece 18 quickly releases the tension to quickly hit the entire knocking piece 13 on the second filter cover 3 under the sliding guidance of the sliding hole 134 along the anti-pulling rod 5. The second filter cover 3 transmits the vibration generated during the hitting to the bag filter cloth 14, and then transmits it to the filter bag body 1, and then transmits it to the bag filter cloth 14 on the other side. When the exhaust gas is filtered, the dust particles clogged in the filter hole are automatically shaken and cleaned. When the exhaust gas is filled again, the above-mentioned hooking action is repeated to hook the knocking piece 13 on the trigger 11 again. When each use is completed, the operator does not need to manually shake the filter bag body 1, but can perform the above-mentioned cleaning by itself.

[0033] The rotating groove 10 is fixed with a pin shaft 16 for switching the trigger 11. The pin shaft 16 is provided with a torsion spring 17. The two open ends of the torsion spring 17 are connected between the trigger 11 and the rotating groove 10, so that the trigger 11 is horizontally extended along the fixed sleeve 9, and the knocking piece 13 is positioned on the inner ring 131 by the hooking part 12.

[0034] The pressure ring 8 is a solid rubber material, and when the pressure ring 8 falls on the trigger 11, it will not have a destructive effect on the trigger 11. The radial rib plate 19 connected between the middle ring 132 and the outer ring 133 is a rubber rod material, and when the radial rib plate 19 hits the second filter cover 3 together with the outer ring 133, it will automatically plastically deform and form a large area of contact with the concave inner wall of the metal filter plate 15, improving the hitting effect on the second filter cover 3.

[0035] As shown in Figure 2 , Figure 3 , one end of the pressure ring 8 facing the waste gas injection port 6 protruding part is provided with a first arc chamfer surface 81, and the other end of the pressure ring 8 is provided with a second arc chamfer surface 82. The first arc chamfer surface 81 and the second arc chamfer surface 82 are arranged so that the arc inner surface of the pressure ring 8 gradually narrows, and after the pressure ring 8 falls, it will be deflected towards the first filter cover 2 direction with the filter bag body 1. The deflection angle is just right to press the trigger 11 with the second arc chamfer surface 82. At the same time, in order to further ensure that the pressure ring 8 can press on the trigger 11 when it falls, the waste gas injection port 6 located at one end (inner end) of the inner cavity of the filter bag body 1 exceeds the inner wall of the filter bag body 1, and is perpendicular to the outer periphery of the tension rod 5. When the filter bag body 1 is deflated, the waste gas injection port 6 will also be deflected downward, and the inner end of the waste gas injection port 6 will just contact the tension rod 5 to form the maximum displacement limit. At the same time, when the synchronously deflected flexible rod 7 drives the pressure ring 8 to deflect downward, the second arc chamfer surface 82 will press on the trigger 11, triggering the trigger 11 to effectively act.

[0036] As shown in Figure 1 , the inner end of the first filter cover 2 is connected with the filter bag body 1 through the first connecting ring 21, and the inner end of the second filter cover 3 is connected with the filter bag body 1 through the second connecting ring 31. The diameters of the first connecting ring 21 and the second connecting ring 31 are greater than the diameter of the filter bag body 1. The first connecting ring 21 and the second connecting ring 31 not only serve as a structure for detachable connection (screw connection) between the first filter cover 2, the second filter cover 3 and the filter bag body 1, but also support the filter bag body 1 by virtue of their large diameter, ensuring that the lower half of the filter hole of the filter bag body 1 will not fall to the ground during actual use, affecting the normal discharge of filtered gas.

[0037] The above-mentioned orientation does not represent the specific orientation of each component in this embodiment. This embodiment is only for the convenience of describing the scheme and is described relatively by referring to the orientation in the figure. In essence, the specific orientation of each component is determined by its actual installation and actual use as well as the orientation description habit of those skilled in the art. Therefore, it is hereby stated.

[0038] The above detailed description of the specific embodiments of the present application has been given to understand the inventive purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. It is particularly pointed out that any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high performance filter bag resistant to stretching, characterized in that, The utility model provides a filter bag, including filter bag main part (1), one end of filter bag main part (1) is detachably installed with first filter cover (2), the other end of filter bag main part (1) is detachably installed with second filter cover (3), and the nut (4) is fixed on first filter cover (2) and second filter cover (3) all, and the anti -tension rod (5) of the axis of inside through filter bag main part (1) is connected between two nuts (4), and the waste gas injection port (6) that the outer end is outwardly protruding and the inner end is communicated with the inner chamber of filter bag main part (1) is connected to the periphery of filter bag main part (1) from inside, the outer end protruding wall of waste gas injection port (6) is connected with flexible rod (7), and flexible rod (7) gradually inclines from the outer end protruding of waste gas injection port (6) to the direction of the middle wall of filter bag main part (1), and the pressure ring (8) is connected in the inclined end of flexible rod (7), the pressure ring (8) is arc, and the inner arc surface of pressure ring (8) contacts on the outer wall of filter bag main part (1), and the fixed sleeve (9) is fixed on anti -tension rod (5), and the middle part of fixed sleeve (9) is provided with rotary groove (10), and the trigger (11) of being able to rotate clockwise and counterclockwise is connected in rotary groove (10), and the one end of fixed sleeve (9) is provided with the opening portion (91) that is communicated with its inner chamber towards second filter cover (3), and one end of trigger (11) passes through rotary groove (10) and is bent upwards and then enters filter bag main part (1) and is towards the inside direction of pressure ring (8), and the other end of trigger (11) is provided with the hooking portion (12) and is arranged outside opening portion (91), and the knocking piece (13) of being elastically connected to second filter cover (3) is arranged in the inner chamber of filter bag main part (1), and the knocking piece (13) is annular, and is slidably sleeved on the outside of anti -tension rod (5), and one side of knocking piece (13) is towards second filter cover (3), and the other side of knocking piece (13) is towards fixed sleeve (9), and when knocking piece (13) is close to fixed sleeve (9) along anti -tension rod (5), it is hung on trigger (11) through hooking portion (12), when trigger (11) rotates counterclockwise, hooking portion (12) is separated from knocking piece (13), and under the action of elastic force, knocking piece (13) is slid along anti -tension rod (5) and then rapidly taps the inner wall surface of second filter cover (3) to make second filter cover (3) drive filter bag main part (1) to vibrate, The knocking piece (13) is circular, comprising an inner ring (131), a middle ring (132) and an outer ring (133), the inner ring (131) is provided with a sliding hole (134) slidingly sleeved on the optical axis portion of the tensile rod (5), the middle ring (132) is connected to the periphery of the inner ring (131) through the radial rib plate (19), the outer ring (133) is connected to the periphery of the middle ring (132) through the radial rib plate (19), the end of the inner ring (131) facing the hooking part (12) is provided with a chamfer (135), the hooking part (12) enters between the inner ring (131) and the middle ring (132) along the chamfer (135) and is hung on the end surface of the inner ring (131) facing the second filter cover (3), the rotary groove (10) is fixedly provided with a pin shaft (16), the pin shaft (16) is sleeved with a torsion spring (17), the two open ends of the torsion spring (17) are connected between the trigger (11) and the rotary groove (10) respectively, so as to ensure that the trigger (11) is hooked on the inner ring (131) through the hooking part (12) after extending horizontally along the fixed sleeve (9), the knocking piece (13) is positioned, the elastic member (18) is connected between the middle ring (132) and the metal filter plate (15) of the second filter cover (3), the elastic member (18) is elongated and stores elastic force when the knocking piece (13) is positioned through the hooking part (12) of the trigger (11), when the knocking piece (13) is positioned through the hooking part (12) of the trigger (11), the trigger (11) is bent upward along the rotary groove (10) and then is inclined to the direction of the end surface of the filter bag body (1) facing the first filter cover (2) after entering the filter bag body (1).

2. The high performance stretch resistant filter bag of claim 1, wherein, The tensile rod (5) is provided with external threads at both ends for connecting with the nuts (4) on the first filter cover (2) and the second filter cover (3), the middle part of the tensile rod (5) is an optical axis, the fixed sleeve (9) is fixed on the optical axis, and the knocking piece (13) is slidingly fitted on the optical axis.

3. A high performance stretch resistant filter bag according to claim 2, wherein, The first filter cover (2) and the second filter cover (3) each comprise a bag filter cloth (14) connected to the end of the filter bag body (1) and a metal filter plate (15) for fixing the nut (4), the mesh number of the bag filter cloth (14) is consistent with that of the filter bag body (1), and the mesh number of the metal filter plate (15) is consistent with that of the filter bag body (1).

4. The high performance, stretch resistant filter bag of claim 3, wherein, The fixed sleeve (9) is a conical cover structure, one end of the fixed sleeve (9) facing the first filter cover (2) is fixedly connected with the tensile rod (5), and the one end of the fixed sleeve (9) facing the first filter cover (2) is provided with an exhaust hole (92) in communication with the opening part (91) of the other end of the second filter cover (3).

5. A high performance stretch resistant filter bag according to claim 4, wherein, The compression ring (8) is a solid rubber material, and the radial rib plate (19) connected between the middle ring (132) and the outer ring (133) is a rubber rod material.

6. A high performance, stretch resistant filter bag according to claim 5, wherein, One end of the compression ring (8) facing the convex part of the exhaust gas injection port (6) is provided with a first arc chamfer surface (81), the other surface of the compression ring (8) is provided with a second arc chamfer surface (82), and the first arc chamfer surface (81) and the second arc chamfer surface (82) are arranged to gradually narrow the arc inner surface of the compression ring (8).

7. A high performance, stretch resistant filter bag according to claim 6, wherein, The inner end of the first filter cover (2) is connected with the first connecting ring (21), and the inner end of the second filter cover (3) is connected with the second connecting ring (31), the diameters of the first connecting ring (21) and the second connecting ring (31) are greater than the diameter of the filter bag body (1).

8. A high performance, stretch resistant filter bag according to claim 7, wherein, The exhaust gas injection port (6) is located at one end of the inner cavity of the filter bag body (1) and exceeds the inner wall of the filter bag body (1), and is perpendicular to the outer peripheral direction of the tensile rod (5).

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