Buffering device of rotary spraying bag-type dust collector

Abstract

The utility model discloses a buffer device of a rotary spraying bag-type dust collector, belongs to the field of dust collection equipment, and overcomes the defect that a welding seam between a sealing bearing support and a rotary spraying transmission pipe can be damaged by vibration generated when large bag-type dust collection equipment runs in the prior art. According to the technical scheme, the buffering device of the rotary spraying bag-type dust remover comprises a rotary spraying transmission pipe, and the buffering device comprises a base, an elastic piece and a rotating piece fixed to the rotary spraying transmission pipe. The rotating part is rotationally connected with the base through a movable structure and can axially slide relative to the base, one end of the elastic part is connected with the base, the other end of the elastic part abuts against the movable structure or the rotating part, and the elastic part can elastically stretch out and draw back in the sliding direction of the rotating part. The sealing bearing support is mainly used for solving the problem that the welding seam between the sealing bearing support and the rotary spraying transmission pipe can be damaged by vibration generated when large-scale bag-type dust removal equipment runs.

Description

Technical Field

[0001] The utility model relates to a dust removal device, in particular to a buffer device for a rotary jet bag filter. Background Art

[0002] The rotary jet bag filter is a highly efficient device suitable for treating high-concentration dust-containing gases and is widely used in industries such as sintering flue gas treatment. Its main features and advantages are that it can achieve uniform air distribution, avoid abrasion of the filter bags caused by local jets, and at the same time avoid secondary dust generation caused by air intake from the upper part of the ash hopper and uneven filter bag load distribution caused by uneven air flow distribution. In addition, the resistance of the rotary jet bag filter body has a certain degree of reduction compared with the conventional pulse jet bag filter, ensuring the lowest overall resistance loss of the equipment. As a dry dust filtering device, the rotary jet bag filter is suitable for capturing fine, dry, non-fibrous dust. Its working principle is to filter the dust-containing gas through textile or non-textile filter bags. Using the filtering effect of the fiber fabric, the dust with large particles and high specific gravity in the dust-containing gas settles due to gravity, while the finer dust is retained by the filter material, thereby achieving the purpose of purifying the gas.

[0003] In the rotary jet transmission pipe and the injection arm in Chinese Patent: CN202121414432.9, they are supported by a sealed bearing support at the bottom. In actual application, the volume of the dust removal equipment is usually relatively large, and the injection pressure is also relatively high, resulting in obvious vibrations. The vertical pressure generated will cause a large frictional force on the lower support structure, exacerbating support wear and heat generation. Long-term operation will cause the weld between the lower sealed bearing support and the rotary jet transmission pipe to crack due to stress fatigue, the axis deviates, and the equipment shakes, affecting the overall structural stability. Summary of the Utility Model

[0004] In order to overcome the deficiency that the vibration generated during the operation of large-scale bag dust removal equipment in the prior art will damage the weld between the sealed bearing support and the rotary jet transmission pipe, the utility model provides a buffer device for a rotary jet bag filter, which can solve the problem that the vibration generated during the operation of large-scale bag dust removal equipment will damage the weld between the sealed bearing support and the rotary jet transmission pipe.

[0005] To achieve the above object, the utility model adopts the following technical scheme: a buffer device for a rotary jet bag filter, the rotary jet bag filter includes a rotary jet drive pipe for transmitting gas and rotating, the buffer device is installed on the lower side of the rotary jet drive pipe, the buffer device includes a base, an elastic member and a rotating member fixed to the rotary jet drive pipe, the rotating member is rotatably connected to the base through a movable structure and enables the rotating member to axially slide relative to the base, one end of the elastic member is connected to the base, the other end of the elastic member abuts against the movable structure or the rotating member, and the elastic member can elastically expand and contract along the sliding direction of the rotating member.

[0006] After adopting the above technical scheme, the utility model has the following advantages: by fixing the rotating member and the rotary jet drive pipe, and then installing the rotary jet drive pipe through the rotational connection between the base and the rotating member, and the rotating member can axially slide relative to the base, and an elastic member is installed between the movable structure or the rotating member and the base, so that the rotary jet drive pipe fixed by the rotating member can obtain buffering in the up and down directions. Usually, the volume of the bag dust removal equipment is relatively large, and the vibration generated during operation can be offset by the elastic member, which has a certain degree of mitigation, prolongs the connection life between the rotary jet drive pipe and the rotating member, also protects the rotational connection between the base and the rotating member, and prolongs the overall life of the equipment.

[0007] Further, the movable structure includes a bearing, the inner ring of the bearing is fixedly connected to the rotating member, the outer ring of the bearing is slidably connected to the base, and one end of the elastic member abuts against the axial surface of the outer ring of the bearing.

[0008] Adopting the foregoing technical scheme, by the sliding connection between the outer ring of the bearing and the base and the fixed connection between the inner ring of the bearing and the rotating member, the rotating member can displace relative to the base axially and circumferentially, and under the elastic action of the outer ring of the bearing, the elastic member can relieve the axial vibration between the rotating member connected to the rotary jet drive pipe and the base, prolong the fixed connection life between the rotary jet drive pipe and the rotating member, also protects the rotational connection between the base and the rotating member, and prolongs the overall life of the equipment.

[0009] Further, the movable structure includes a bearing and a support ring, the inner ring of the bearing is fixedly connected to the rotating member, the outer ring of the bearing is slidably connected to the base, one end of the support ring is connected to the outer ring of the bearing, and the other end is connected to the elastic member.

[0010] By adopting the above-mentioned technical scheme, the outer ring of the bearing and the base are slidably connected, and the inner ring of the bearing and the rotating part are fixedly connected, so that the rotating part can be displaced relative to the base in the axial and circumferential directions. A support ring is arranged between the elastic part and the outer ring of the bearing. Compared with the direct connection of the elastic part to the outer ring of the bearing, the stability of the abutment between the elastic part and the movable structure is increased, so that the effect of elastic force transmission is better, and the axial vibration of the rotating part and the base connected by the rotary spray transmission pipe is further alleviated, thereby extending the life of the fixed connection between the rotary spray transmission pipe and the rotating part, protecting the rotating connection between the base and the rotating part, and extending the overall life of the equipment.

[0011] Furthermore, the support ring is divided into an upper contact ring and a lower contact ring, the upper contact ring is connected to the outer ring of the bearing, the lower contact ring is connected to the elastic member, the inner side of the upper contact ring avoids the inner ring of the bearing, and the inner diameter of the lower contact ring is larger than the diameter of the rotating member and smaller than the outer diameter of the inner ring of the bearing.

[0012] By adopting the above-mentioned technical solution, the inner side of the upper contact ring of the support ring is designed to avoid the inner ring of the bearing and only contact with the outer ring of the bearing, so as to better transmit the elastic force, avoid contact with the inner ring of the bearing, and prevent friction between the inner ring of the bearing and the elastic part. Similarly, the inner diameter of the lower contact ring is larger than the diameter of the rotating part and smaller than the outer diameter of the inner ring of the bearing, thereby increasing the contact area between the elastic part and the movable structure, and at the same time avoiding the rotating part on the inner side of the lower contact ring, that is, the inner ring diameter of the lower contact ring is larger than the rotating part, so that under special circumstances, the rotating part and the bearing undergo axial displacement, and the rotating part will not directly contact the support ring when moving downward, thereby preventing hard friction between the rotating part and the support ring, and avoiding affecting the rotation of the rotary spray transmission pipe.

[0013] Furthermore, the elastic member is a disc spring group formed by stacking a plurality of disc springs along the sliding direction of the rotating member.

[0014] By adopting the above-mentioned technical solution, disc springs are stacked along the sliding direction of the rotating part, so that the disc springs will be deformed when subjected to load in the sliding direction and then return to their original shape, thereby effectively mitigating the strong impact caused by the rotary spray transmission pipe.

[0015] Furthermore, the movable structure and the elastic member are inside the base, and a sealing cover for isolating the movable structure from the outside is installed at the opening of the base.

[0016] By adopting the above-mentioned technical solution, the sealing cover seals the movable structure in the base, and the elastic part is sealed together with the movable structure. Since the working environment of the buffer device is dusty, the movable structure and the elastic part are isolated from the dust to prevent dust from entering the movable component or getting stuck between the elastic parts, thereby preventing the operation of the buffer device from being affected and extending the life of the buffer device.

[0017] Further, a gap is provided between the sealing cover and the rotating member. A sealing ring for blocking the gap is provided inside the sealing cover, and lubricating oil for lubricating the rotating connection between the rotating member and the base and the elastic component is provided inside the base.

[0018] With the foregoing technical solution, by providing a sealing ring between the sealing cover and the rotating member to block the gap between the sealing cover and the rotating member, it prevents external dust from entering the base, and at the same time does not affect the relative rotation between the rotating member and the base. And lubricating oil for lubricating the rotating connection between the rotating member and the base and the elastic component is placed inside the base, making the rotation between the rotating member and the base smoother. And due to the addition of the sealing ring, the overflow of the lubricating oil is avoided.

[0019] Further, a sealing ring is provided between the sealing cover and the rotating member, and a dust-proof net is provided outside the sealing ring for blocking dust in the air entering the sealing ring.

[0020] With the foregoing technical solution, by providing a dust-proof net outside the sealing ring, when the rotating member slides relative to the base, the air pressure inside the base changes, and a part of the external trace air will enter the base through the sealing ring. At this time, the dust-proof net can isolate the dust in this part of the air and prevent part of the dust from entering the base and affecting the movable structure and the elastic member.

[0021] Further, an activity cavity is provided inside the base, the movable structure and the elastic member are accommodated in the activity cavity, the bottom of the activity cavity is a sealed structure, and the top is open to form the upper opening of the base.

[0022] With the foregoing technical solution, by sealing the bottom of the activity cavity inside the base and having only one upward opening, the lubricating oil placed in the activity cavity can only flow out through the opening. And under the deformation action of the elastic member, it can drive the flow of the lubricating oil, enabling the movable structure inside the base to fully contact the lubricating oil, which is beneficial to the movable structure to dissipate heat.

[0023] Further, the spin jet bag filter further includes a plurality of rotary spray arms circumferentially and spacedly installed on the spin jet transmission pipe, and a perforated plate located below the spin jet transmission pipe, and the base is fixedly connected to the perforated plate.

[0024] With the foregoing technical solution, the perforated plate is used to fix the cloth bag and play a supporting role, and the base is fixedly connected to the perforated plate, so that the rotating member rotatably connected to the base can rotate along with the spin jet transmission pipe, enabling the rotary spray arms on the spin jet transmission pipe to spray and remove dust to the corresponding cloth bags during the rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following further describes the present invention with reference to the accompanying drawings:

[0026] Figure 1 Schematic diagram of a buffer device for a jet - spray bag dust collector of the present utility model;

[0027] Figure 2 Schematic diagram of the application of the buffer device on a jet - spray bag dust collector.

[0028] Description of the drawings: 1. Base; 11. Movable cavity; 12. Bearing seat; 13. Support; 2. Disc spring; 3. Rotating part; 4. Bearing; 41. Inner ring; 42. Outer ring; 5. Support ring; 51. Upper contact ring; 52. Lower contact ring; 6. Sealing cover; 7. Gap; 8. Sealing ring; 9. Dust - proof net; 10. Jet - spray transmission pipe; 101. Rotary spray - blowing arm; 102. Manifold plate. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0030] The terms "first", "second", etc. (if any) in the description and claims of the present utility model are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used to distinguish a certain technical feature, it does not necessarily imply the existence of "first". It should be understood that in the present utility model, "including" and "having" and any of their variations are intended to cover non - exclusive inclusion. It should be understood that in the present utility model, "a plurality of" means two or more. "And / or" is merely a description of the relationship between associated objects, indicating that three relationships may exist. For example, X and / or Y may represent: X exists alone, X and Y exist simultaneously, and Y exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after. "Including X, Y, and Z", "including X, Y, Z" means that all of X, Y, and Z are included, "including X, Y, or Z" means that any one of X, Y, and Z is included, and "including X, Y, and / or Z" means that any one or any two or all three of X, Y, and Z are included.

[0031] The technical solutions of the present utility model will be described in detail below with specific embodiments. These specific embodiments can be combined or replaced according to the actual situation. For the same or similar concepts or processes, they may not be repeated in some embodiments.

[0032] Such as Figures 1 to 2As shown in the figure, the utility model provides a buffer device for a rotary jet bag filter. The rotary jet bag filter includes a rotary jet transmission pipe 10 for transmitting gas and rotating. The buffer device is installed on the lower side of the rotary jet transmission pipe 10. The buffer device includes a base 1, an elastic member, and a rotating member 3 fixed to the rotary jet transmission pipe 10. The rotating member 3 is rotatably connected to the base 1 through a movable structure, enabling the rotating member 3 to slide axially relative to the base 1. One end of the elastic member is connected to the base 1, and the other end of the elastic member abuts against the movable structure or the rotating member 3. The elastic member can elastically expand and contract along the sliding direction of the rotating member 3.

[0033] After adopting the above technical solution, the utility model has the following advantages: By fixing the rotating member 3 and the rotary jet transmission pipe 10, and then installing the rotary jet transmission pipe 10 through the rotational connection between the base 1 and the rotating member 3. The rotating member 3 can slide axially relative to the base 1, and an elastic member is installed between the movable structure or the rotating member 3 and the base 1, enabling the rotary jet transmission pipe 10 fixed by the rotating member 3 to obtain buffering in the vertical direction. When the bag filter device is relatively large in volume, the vibration generated during operation can be offset by the elastic member, which has a certain degree of alleviation, prolongs the service life of the fixed connection between the rotary jet transmission pipe 10 and the rotating member 3, also protects the rotational connection between the base 1 and the rotating member 3, and extends the overall service life of the device.

[0034] It can be understood that when the rotating member 3 directly abuts against the elastic member, the rotating member 3 can rotate relative to the elastic member; when the rotating member 3 abuts against the movable structure, it can also be fixedly connected to the relative movable side of the movable structure.

[0035] Specifically, during the installation process, an appropriate amount of high-temperature resistant grease is applied to the rotational connection and the sliding connection; the elastic member can be a compression spring.

[0036] Furthermore, the movable structure includes a bearing 4 and a support ring 5. The inner ring 41 of the bearing 4 is fixedly connected to the rotating member 3, the outer ring 42 of the bearing 4 is slidably connected to the base 1, one end of the support ring 5 is connected to the outer ring 42 of the bearing 4, and the other end is connected to the elastic member.

[0037] With the foregoing technical solution, the outer ring 42 of the bearing 4 is slidably connected to the base 1, and the inner ring 41 of the bearing 4 is fixedly connected to the rotating member 3, so that the rotating member 3 can be displaced relative to the base 1 axially and circumferentially. By providing a support ring 5 between the elastic member and the outer ring 42 of the bearing 4, compared with directly connecting the elastic member to the outer ring 42 of the bearing 4, the contact area between the support ring 5 and the elastic member can be increased, the stability of the abutment between the elastic member and the movable structure is increased, the effect of elastic force transmission is better, the axial vibration between the rotating member 3 connected to the jet grouting transmission pipe 10 and the base 1 is further alleviated, the service life of the fixed connection between the jet grouting transmission pipe 10 and the rotating member 3 is extended, the rotational connection between the base 1 and the rotating member 3 is also protected, and the overall service life of the equipment is extended.

[0038] Further, the support ring 5 is divided into an upper contact ring 51 and a lower contact ring. The upper contact ring 51 is connected to the outer ring 42 of the bearing 4, the lower contact ring 52 is connected to the elastic member, and the inner diameter of the lower contact ring 51 is greater than the diameter of the rotating member and less than the outer diameter of the inner ring 41 of the bearing.

[0039] With the foregoing technical solution, by designing the inner side of the upper contact ring 51 of the support ring 5 to avoid the inner ring 41 of the bearing 4 and only contact the outer ring 42 of the bearing 4, contact with the inner ring 41 of the bearing 4 is avoided, and friction between the inner ring 41 of the bearing 4 and the elastic member is prevented. Similarly, the inner diameter of the lower contact ring 52 is greater than the diameter of the rotating member and less than the outer diameter of the inner ring 41 of the bearing 4, increasing the contact area between the elastic member and the movable structure. At the same time, the rotating member 3 is avoided inside the lower contact ring 52, that is, the inner ring diameter of the lower contact ring 52 is greater than that of the rotating member 3. When the rotating member 3 undergoes axial displacement relative to the bearing 4 under special circumstances and moves downward, it will not directly contact the support ring 5, preventing hard friction between the rotating member 3 and the support ring 5 and avoiding affecting the rotation of the jet grouting transmission pipe 10.

[0040] Further, the elastic member is a set of disc springs 2 stacked along the sliding direction of the rotating member 3.

[0041] With the foregoing technical solution, by stacking the disc springs 2 along the sliding direction of the rotating member 3, the disc springs 2 will deform when subjected to a load in the sliding direction and then can return to their original shape. Therefore, it can effectively reduce the strong impact brought by the jet grouting transmission pipe 10. In addition, the number of disc springs 2 can be increased or decreased according to the vibration intensity to change the elastic force of the set of disc springs.

[0042] Further, the movable structure and the elastic member are inside the base 1, and a sealing cover 6 for isolating the movable structure from the outside is installed at the opening of the base 1.

[0043] By adopting the above-mentioned technical solution, the sealing cover 6 seals the movable structure in the base 1, and the elastic part is sealed together with the movable structure. Since the working environment of the buffer device is dusty, the movable structure and the elastic part are isolated from the dust to prevent dust from entering the movable components or getting stuck between the elastic parts, thereby preventing the operation of the buffer device from being affected and extending the life of the buffer device.

[0044] Specifically, the base 1 can also be divided into a bearing seat 12 for accommodating the movable structure and the rotating member 3, and a support seat 13 for supporting.

[0045] Furthermore, a gap 7 is provided between the sealing cover 6 and the rotating member 3 , a sealing ring 8 for sealing the gap 7 is provided in the sealing cover 6 , and lubricating oil for lubricating the rotating connection between the rotating member 3 and the base 1 and the elastic component is provided in the base 1 .

[0046] By adopting the above-mentioned technical solution, a sealing ring 8 is provided between the sealing cover 6 and the rotating part 3 to seal the gap 7 between the sealing cover 6 and the rotating part 3, thereby preventing external dust from entering the base 1, while not affecting the relative rotation of the rotating part 3 and the base 1. Lubricating oil for lubricating the rotating connection between the rotating part 3 and the base 1 and the elastic component is placed in the base 1, so that the rotation between the rotating part 3 and the base 1 is smoother, and due to the addition of the sealing ring 8, the overflow of the lubricating oil is avoided.

[0047] Preferably, the sealing ring 8 is a lip sealing ring.

[0048] Furthermore, a gap 7 is provided between the sealing cover 6 and the rotating member, and a dustproof net 9 is provided outside the gap 7 to block dust in the air from entering the sealing ring 8 .

[0049] By adopting the above-mentioned technical solution, a dustproof net 9 is arranged outside the sealing ring 8, so that when the rotating part 3 slides relative to the base 1, the air pressure in the base 1 changes, and a small amount of external air will enter the base 1 through the sealing ring 8. At this time, the dustproof net 9 can isolate the dust in this part of the air, preventing part of the dust from entering the base 1 and affecting the movable structure and elastic parts.

[0050] Specifically, the sealing cover 6 is provided with a rotating hole for the rotating part to pass through, and the outer wall of the rotating part and the inner wall of the rotating hole form a gap 7. The dustproof net 9 is arranged on the gap 7, and the bottom wall is attached to the top of the gap 7. The inner diameter of the dustproof net 9 is attached to the outer wall of the rotating part, and the outer diameter is larger than the diameter of the rotating hole.

[0051] Furthermore, an active cavity 11 is provided inside the base 1. Preferably, the active cavity 11 is provided on the bearing seat 12. The active cavity 11 accommodates the active structure and the elastic member. The bottom of the active cavity 11 is a sealing structure, and the top is open to form an upper opening of the bearing seat 12.

[0052] Adopting the foregoing technical solution, by sealing the bottom of the movable cavity 11 in the base 1, there is only one upward opening, so that the lubricating oil placed in the movable cavity 11 can only flow out through the opening, and under the deformation action of the elastic member, the flow of the lubricating oil can be driven, so that the movable structure in the base 1 can fully contact the lubricating oil, which is beneficial to the movable structure to dissipate heat.

[0053] Furthermore, the spin jet bag filter further includes a plurality of rotary jetting arms 101 circumferentially and spacedly installed on the spin jet transmission pipe 10, and a perforated plate 102 located below the spin jet transmission pipe 10, and the base 1 is fixedly connected to the perforated plate 102.

[0054] Adopting the foregoing technical solution, the perforated plate 102 is used to fix the cloth bag and play a supporting role, and the base 1 is fixedly connected to the perforated plate 102, so that the rotating member 3 rotatably connected to the base 1 can rotate along with the spin jet transmission pipe 10, so that the rotary jetting arm 101 on the spin jet transmission pipe 10 can jet and dust the corresponding cloth bag during the rotation process.

[0055] Embodiment 2:

[0056] Different from Embodiment 1, the movable structure only includes a bearing 4, the inner ring 41 of the bearing 4 is fixedly connected to the rotating member 3, the outer ring 42 of the bearing 4 is slidably connected to the base 1, and one end of the elastic member abuts against the axial surface of the outer ring 42 of the bearing 4.

[0057] Adopting the foregoing technical solution, by the sliding connection between the outer ring 42 of the bearing 4 and the base 1, and the fixed connection between the inner ring 41 of the bearing 4 and the rotating member 3, the rotating member 3 can be displaced axially and circumferentially relative to the base 1, and the outer ring 42 of the bearing 4 can relieve the axial vibration between the rotating member 3 connected to the spin jet transmission pipe 10 and the base 1 under the elastic action of the elastic member, extend the fixed connection life between the spin jet transmission pipe 10 and the rotating member 3, and also protect the rotational connection between the base 1 and the rotating member 3, and extend the overall life of the equipment.

[0058] In addition to the above preferred embodiments, the present invention has other implementation manners. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Claims

1. A buffer device for a rotary spray bag dust collector, the rotary spray bag dust collector comprising a rotary spray transmission pipe for transmitting gas and rotating, the buffer device being installed at the lower end of the rotary spray transmission pipe, characterized in that: The buffer device includes a base, an elastic member and a rotating member fixed to the rotary spray transmission pipe. The rotating member is rotatably connected to the base through a movable structure and enables the rotating member to slide axially relative to the base. One end of the elastic member is connected to the base, and the other end of the elastic member abuts against the movable structure or the rotating member. The elastic member can elastically expand and contract along the sliding direction of the rotating member.

2. The buffer device of a rotary spray bag dust collector according to claim 1 is characterized in that: The movable structure comprises a bearing, the inner ring of the bearing is fixedly connected to the rotating member, the outer ring of the bearing is slidably connected to the base, and one end of the elastic member abuts against the axial surface of the outer ring of the bearing.

3. The buffer device of a rotary spray bag dust collector according to claim 1 is characterized in that: The movable structure includes a bearing and a support ring, the inner ring of the bearing is fixedly connected to the rotating member, the outer ring of the bearing is slidably connected to the base, one end of the support ring is connected to the outer ring of the bearing, and the other end is connected to the elastic member.

4. The buffer device of the rotary spray bag dust collector according to claim 3 is characterized in that: The support ring is divided into an upper contact ring and a lower contact ring, the upper contact ring is connected to the outer ring of the bearing, the lower contact ring is connected to the elastic member, the inner side of the upper contact ring avoids the inner ring of the bearing, and the inner diameter of the lower contact ring is larger than the diameter of the rotating member and smaller than the outer diameter of the inner ring of the bearing.

5. The buffer device of the rotary spray bag dust collector according to claim 1 is characterized in that: The elastic member is a disc spring group formed by stacking a plurality of disc springs along the sliding direction of the rotating member.

6. The buffer device of a rotary spray bag dust collector according to claim 1, characterized in that: The movable structure and the elastic member are inside the base, and a sealing cover for isolating the movable structure from the outside is installed at the opening of the base.

7. The buffer device of the rotary spray bag dust collector according to claim 6 is characterized in that: A gap is arranged between the sealing cover and the rotating member, a sealing ring for sealing the gap is arranged in the sealing cover, and lubricating oil for lubricating the rotating connection between the rotating member and the base and the elastic component is arranged in the base.

8. The buffer device of the rotary spray bag dust collector according to claim 6, characterized in that: A gap is arranged between the sealing cover and the rotating member, and a dustproof net is arranged outside the gap to block dust in the air entering the base.

9. The buffer device of a rotary spray bag dust collector according to claim 6, characterized in that: An activity cavity is arranged inside the base, and the activity cavity accommodates the activity structure and the elastic member. The bottom of the activity cavity is a sealing structure, and the top is open to form an upper opening of the base.

10. The buffer device of a rotary spray bag dust collector according to claim 1, characterized in that: The rotary spray bag dust collector also includes a plurality of rotary spray arms which are circumferentially spaced apart and installed on the rotary spray transmission pipe, and a flower plate which is located at the lower side of the rotary spray transmission pipe, and the base is fixedly connected to the flower plate.

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