A rotator

Abstract

The utility model belongs to filter element dust cleaning technical field, specifically disclose a kind of rotator, including first connecting seat, second connecting seat, pivot, nut;The middle part of first connecting seat is integrally formed with first shaft sleeve, and the upper and lower ends of the inner wall of first shaft sleeve are respectively provided with first accommodating groove and second accommodating groove, and first accommodating groove, second accommodating groove are respectively placed with first annular copper sheet, second annular copper sheet;The both ends of second connecting seat are respectively connected and fixed with the both ends of first connecting seat through air jet pipe, and the middle part of second connecting seat is integrally formed with second shaft sleeve, and the upper end of the inner wall of second shaft sleeve is provided with third accommodating groove, and third accommodating groove is placed with third annular copper sheet;The sidewall of pivot top end and bottom end is respectively provided with first limiting part and second limiting part, and pivot respectively passes through first annular copper sheet, second annular copper sheet, third annular copper sheet;Nut is screwed on pivot, and located in the side of first shaft sleeve close to second annular copper sheet.

Description

Technical Field

[0001] This utility model relates to the field of filter element cleaning technology, and in particular to a rotary device. Background Technology

[0002] After dust removal, the surface of the cylindrical filter element, which acts as a filter, accumulates a lot of fine dust. This dust can clog the filter pores, reducing the filtration efficiency by half. In existing technology, a rotary valve is placed inside the filter element, primarily for backflushing dust removal. The method involves introducing backflushing gas into the rotary valve, causing it to rotate. Simultaneously, the gas is sprayed through the rotary valve onto the filter fiber surface of the filter element, causing the dust adhering to the outside of the filter element to fall off, thus cleaning the surface of the filter element.

[0003] Utility model patent CN221267520U discloses a filter element cleaning pulse rotary device. Based on its disclosed technical content and accompanying drawings, the rotary device's air inlet pipe is connected to the blowpipes on both sides of the air inlet pipe via a bearing housing and a connecting rod, allowing gas in the air inlet pipe to flow into the blowpipes. The bearing housing is rotatably mounted on the air inlet pipe via bearings. However, it is known that the above-mentioned... The bearing rotates using balls arranged in the grooves between the inner and outer rings, and is sealed on both sides by sealing rings. The disadvantages are that the sealing rings are prone to wear and detachment, or aging and falling off. Because the rotator operates in a dusty environment, dust can easily enter the bearing after the sealing rings age. Furthermore, the bearing is quite precise, making the balls inside prone to wear or jamming during operation. This leads to easy bearing damage, resulting in poor rotator rotation, frequent replacements, and higher costs. Utility Model Content

[0004] In order to overcome the defects of the existing technology, this utility model provides a rotary device to solve the problem that dust enters the bearing housing and causes the balls inside the bearing to wear or jam during operation.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a rotator, comprising: The first connecting seat has a first bushing integrally formed in the middle of the first connecting seat. The upper and lower ends of the inner wall of the first bushing are respectively provided with a first receiving groove and a second receiving groove. A first annular copper sheet and a second annular copper sheet are respectively placed in the first receiving groove and the second receiving groove. The second connecting seat has its two ends connected and fixed to the two ends of the first connecting seat through jet pipes, and the middle part of the second connecting seat has a second bushing integrally formed. The upper end of the inner wall of the second bushing is provided with a third receiving groove, and a third annular copper sheet is placed in the third receiving groove. The rotating shaft has a first limiting part and a second limiting part respectively provided on the side walls of the top and bottom ends, and the rotating shaft passes through the first annular copper sheet, the second annular copper sheet and the third annular copper sheet respectively. A nut is screwed onto the rotating shaft and located on the side of the first bushing close to the second annular copper piece, so that the first limiting part restricts the first annular copper piece in the first receiving groove, the nut restricts the second annular copper piece in the second receiving groove, and the second limiting part restricts the third annular copper piece in the third receiving groove.

[0006] As a further embodiment, a first annular iron sheet and a second annular iron sheet are respectively placed in the first receiving groove and the second receiving groove. The first annular iron sheet is located on the side of the first annular copper sheet near the first limiting part, and the second annular iron sheet is located on the side of the second annular copper sheet near the nut. The rotating shaft passes through the first annular iron sheet and the second annular iron sheet respectively.

[0007] As a further embodiment, a first annular plastic sheet and a second annular plastic sheet are respectively placed in the first receiving groove and the second receiving groove. The first annular plastic sheet is located between the first annular copper sheet and the first annular iron sheet, and the second annular plastic sheet is located between the second annular copper sheet and the second annular iron sheet. The rotating shaft passes through the first annular plastic sheet and the second annular plastic sheet respectively.

[0008] As a further embodiment, an annular graphite sheet is placed in the second receiving groove, the annular graphite sheet being located between the second annular copper sheet and the second annular plastic sheet, and the rotating shaft passing through the annular graphite sheet.

[0009] As a further embodiment, the rotator also includes a connecting piece located between the first connecting seat and the second connecting seat. The two ends of the connecting piece are respectively connected and fixed to the jet pipes at both ends of the first connecting seat, and the rotating shaft passes through the middle of the connecting piece.

[0010] As a further embodiment, both ends of the first connecting seat and the second connecting seat are integrally formed with sleeves. The sleeves of the first connecting seat and the second connecting seat are respectively fitted onto both ends of the jet pipe and connected and fixed to the jet pipe by rivets.

[0011] As a further embodiment, the rotating shaft has an air intake channel that penetrates the top surface of the rotating shaft, and an air outlet is provided on the side wall of the rotating shaft. The air outlet communicates with the air intake channel and is located between the first receiving groove and the second receiving groove of the first bushing. The first connecting seat has an air passage that communicates with the air outlet, sleeve, and jet pipe. The side wall of the jet pipe has multiple jet holes spaced apart along the central axis of the jet pipe. The jet holes of the jet pipes at both ends of the first connecting seat are centrally symmetrical about the central axis of the rotating shaft.

[0012] As a further embodiment, an air inlet is provided on the side wall at the top of the jet pipe, and the air inlet communicates with the air passage.

[0013] As a further embodiment, the angle between the line connecting the center of the jet hole and the central axis of the jet pipe and the plane formed by the rotating shaft and the jet pipe is between 10 and 20°.

[0014] The beneficial effects of this utility model are as follows: the nut is screwed onto the rotating shaft, pushing the first connecting seat to move axially along the rotating shaft. The two ends of the second connecting seat are respectively connected and fixed to the two ends of the first connecting seat through the air jet pipe, thereby driving the second connecting seat to move synchronously along the axial direction of the rotating shaft. Ultimately, the first limiting part restricts the first annular copper piece in the first receiving groove, the nut restricts the second annular copper piece in the second receiving groove, and the second limiting part restricts the third annular copper piece in the third receiving groove. Thus, the rotating shaft is rotatably mounted on the first connecting seat through the first and second annular copper pieces, and rotatably mounted on the second connecting seat through the third annular copper piece. The annular copper pieces become smoother and smoother under friction and are not as precise as bearings. Even if dust enters the first, second, and third receiving grooves, it will not cause the annular copper pieces to jam, thereby achieving the function of replacing bearings, making the rotator rotate smoothly and extending the service life of the rotator. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 for Figure 1 Enlarged view of point A in the image; Figure 3 This is a cross-sectional schematic diagram of an embodiment of the present utility model; Figure 4 for Figure 3 Enlarged view of point B in the image; Figure 5 for Figure 4 Enlarged view of point D in the image; Figure 6 for Figure 3 Enlarged view of point C in the image; Figure 7 This is a diagram illustrating the positional relationship between the jet pipe and the rotating shaft in an embodiment of this utility model. Figure 8 This is a schematic diagram illustrating the application of an embodiment of the present utility model.

[0016] In the figure, 1-first connecting seat, 11-first bushing, 111-first receiving groove, 112-second receiving groove, 113-sleeve, 12-first annular copper sheet, 13-second annular copper sheet, 14-first annular iron sheet, 15-second annular iron sheet, 16-first annular plastic sheet, 17-second annular plastic sheet, 18-annular graphite sheet, 19-air passage, 2-second connecting seat, 21-second bushing, 211-third receiving groove, 22-third annular copper sheet, 3-jet pipe, 31-jet hole, 32-air inlet hole, 4-rotating shaft, 41-first limiting part, 42-second limiting part, 43-air inlet channel, 44-air outlet hole, 5-nut, 6-connecting piece, 7-rivet, 8-filter element. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0018] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0019] In this utility model, unless otherwise explicitly specified and limited, when terms such as "set in," "connected," or "linked" appear, these terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] When directional terms appear, they are used to facilitate the description of this utility model and to simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this utility model.

[0021] As attached Figure 1 As shown, the rotator provided by this utility model includes a first connecting seat 1, a second connecting seat 2, a rotating shaft 4, and a nut 5. It should be noted that the first connecting seat 1 and the second connecting seat 2 are made of aluminum, and the rotating shaft 4 is made of iron.

[0022] As attached Figure 2 , 3 As shown in Figures 4 and 5, a first bushing 11 is integrally formed in the middle of the first connecting seat 1. Specifically, the rotating shaft 4 passes through the first bushing 11. The upper and lower ends of the inner wall of the first bushing 11 are respectively provided with a first receiving groove 111 and a second receiving groove 112. A first annular copper sheet 12 and a second annular copper sheet 13 are respectively placed in the first receiving groove 111 and the second receiving groove 112. Specifically, the first annular copper sheet 12 and the second annular copper sheet 13 are respectively clearance-fitted with the inner walls of the first receiving groove 111 and the second receiving groove 112.

[0023] As attached Figure 2 , 6 As shown, the two ends of the second connecting seat 2 are respectively connected and fixed to the two ends of the first connecting seat 1 through the jet pipe 3, and the first connecting seat 1 and the second connecting seat 2 are connected and fixed into an integral frame through the jet pipe 3. The second connecting seat 2 has a second bushing 21 integrally formed in the middle, and the rotating shaft 4 passes through the second bushing 21. The upper end of the inner wall of the second bushing 21 has a third receiving groove 211, and a third annular copper piece 22 is placed in the third receiving groove 211. Specifically, the third annular copper piece 22 is clearance-fitted with the inner wall of the third receiving groove 211.

[0024] As attached Figure 5-6 As shown, a first limiting part 41 and a second limiting part 42 are respectively provided on the side walls of the top and bottom ends of the rotating shaft 4. The first limiting part 41 can be an annular flange protruding from the outer wall of the rotating shaft 4, or it can be a concave annular step machined on the outer wall of the rotating shaft 4. The second limiting part 42 is selected as a concave annular step machined on the outer wall of the rotating shaft 4. The rotating shaft 4 passes through the first annular copper sheet 12, the second annular copper sheet 13, and the third annular copper sheet 22 respectively.

[0025] As attached Figure 4-6 As shown, nut 5 is screwed onto shaft 4. Specifically, threads are machined into shaft 4 to allow screwing onto nut 5. Nut 5 is located on the side of first bushing 11 near second annular copper piece 13, so that first limiting part 41 restricts first annular copper piece 12 within first receiving groove 111, nut 5 restricts second annular copper piece 13 within second receiving groove 112, and second limiting part 42 restricts third annular copper piece 22 within third receiving groove 211. Thus, the first annular copper piece 12, second annular copper piece 13, and third annular copper piece 22 are respectively confined within first receiving groove 111, second receiving groove 112, and third receiving groove 211, preventing them from loosening.

[0026] After passing the rotating shaft 4 through the first annular copper sheet 12 placed in the first receiving groove 111 and the second annular copper sheet 13 placed in the second receiving groove 112, the nut 5 is then placed on the rotating shaft 4. Next, the rotating shaft 4 is passed through the third annular copper sheet 22 placed in the third receiving groove 211, and the nut 5 is screwed onto the rotating shaft 4. This pushes the first connecting seat 1 to move axially along the rotating shaft 4. The two ends of the second connecting seat 2 are respectively connected and fixed to the two ends of the first connecting seat 1 via the jet pipe 3, thereby driving the second connecting seat 2 to move synchronously along the axial direction of the rotating shaft 4, ultimately achieving the first limit. Part 41 restricts the first annular copper sheet 12 within the first receiving groove 111, nut 5 restricts the second annular copper sheet 13 within the second receiving groove 112, and second limiting part 42 restricts the third annular copper sheet 22 within the third receiving groove 211. This allows the rotating shaft 4 to be rotatably mounted on the first connecting seat 1 via the first annular copper sheet 12 and the second annular copper sheet 13, and rotatably mounted on the second connecting seat 2 via the third annular copper sheet 22. Copper is slightly softer and becomes smoother with wear. Utilizing the flexibility and smoothness of copper reduces the resistance generated by rotational friction, thus providing lubrication. Furthermore, it is not as precise as a bearing; even if dust enters the first receiving groove 111, the second receiving groove 112, and the third receiving groove 211, it will not cause the annular copper sheet to jam, thereby achieving the function of replacing a bearing and ensuring smooth rotation of the rotator.

[0027] Furthermore, even if the annular copper strip is worn out, the cost of replacing the annular copper strip is much lower than that of replacing the bearing, and the replacement is also relatively simple.

[0028] Further details are attached. Figure 4-5 As shown, a first annular iron sheet 13 and a second annular iron sheet 15 are respectively placed in the first receiving groove 111 and the second receiving groove 112. Specifically, the first annular iron sheet 13 and the second annular iron sheet 15 are respectively clearance-fitted with the inner walls of the first receiving groove 111 and the second receiving groove 112. The first annular iron sheet 13 is located on the side of the first annular copper sheet 12 near the first limiting part 41, and the second annular iron sheet 15 is located on the side of the second annular copper sheet 13 near the nut 5. The rotating shaft 4 passes through the first annular iron sheet 13 and the second annular iron sheet 15 respectively. The annular iron sheets are made of hard and wear-resistant material, which protects the annular copper sheet and prevents the annular copper sheet from directly contacting the first limiting part 41 and the nut 5 on the rotating shaft 4, thus preventing accelerated wear. At the same time, the annular iron sheets act as a shield, reducing the amount of dust entering the first receiving groove 111 and the second receiving groove 112. Because iron is relatively hard, placing a ring-shaped iron sheet on the outside of the ring-shaped copper sheet can effectively protect the ring-shaped copper sheet inside the iron sheet from external impacts, thus preventing damage to the internal components (ring-shaped copper sheet, ring-shaped plastic sheet, ring-shaped graphite sheet).

[0029] Based on the above, as shown in the appendix Figure 4-5As shown, a first annular plastic sheet 16 and a second annular plastic sheet 17 are respectively placed in the first receiving groove 111 and the second receiving groove 112. Specifically, the first annular plastic sheet 16 and the second annular plastic sheet 17 are respectively clearance-fitted with the inner walls of the first receiving groove 111 and the second receiving groove 112. The first annular plastic sheet 16 is located between the first annular copper sheet 12 and the first annular iron sheet 13, and the second annular plastic sheet 17 is located between the second annular copper sheet 13 and the second annular iron sheet 15. The rotating shaft 4 passes through the first annular plastic sheet 16 and the second annular plastic sheet 17 respectively. The first annular plastic sheet 16 and the second annular plastic sheet 17 play a lubricating role, which can reduce the frictional resistance between the annular copper sheet and the annular iron sheet, reduce the wear of the annular copper sheet, and further reduce the frictional resistance when the first connecting seat 1 rotates. The annular plastic sheet also has hardness and a very smooth surface. Due to its smooth plastic properties, the rotational resistance is further reduced, making the rotator rotate more smoothly. Preferably, the annular plastic sheet is made of polytetrafluoroethylene, which is both wear-resistant and has good lubricity.

[0030] It should be noted that since the first connecting seat 1 is installed on the rotating shaft 4 by the nut 5, the relative force between the first connecting seat 1 and the rotating shaft 4 is relatively large. The above solution places the first annular iron sheet 13, the second annular iron sheet 15, the first annular plastic sheet 16, and the second annular plastic sheet 17 in the first receiving groove 111 and the second receiving groove 112 respectively, which can further reduce the wear and loss of the annular copper sheet.

[0031] Based on the above, as shown in the appendix Figure 5 As shown, an annular graphite sheet 18 is also placed in the second receiving groove 112. The annular graphite sheet 18 is located between the second annular copper sheet 13 and the second annular plastic sheet 17, and the rotating shaft 4 passes through the annular graphite sheet 18. When the annular graphite sheet 18 rotates and rubs, it will lose graphite powder, and the graphite powder has a lubricating effect, further reducing the frictional resistance when the first connecting seat 1 rotates.

[0032] As attached Figure 1 As shown, due to the large distance between the first connecting seat 1 and the second connecting seat 2, the jet pipes 3 on both sides of the rotating shaft 4 are prone to bending during rotation. Therefore, the rotator also includes a connecting piece 6, which is located between the first connecting seat 1 and the second connecting seat 2. The two ends of the connecting piece 6 are respectively connected and fixed to the jet pipes 3 at both ends of the first connecting seat 1, and the rotating shaft 4 passes through the middle of the connecting piece 6. The connecting piece 6 connects the jet pipes 3 on both sides of the rotating shaft 4, strengthening the structural strength of the jet pipes 3 and preventing bending.

[0033] In some embodiments, as shown in the appendix Figure 2 , 6As shown, both ends of the first connecting seat 1 and the second connecting seat 2 are integrally formed with sleeves 113. The sleeves 113 of the first connecting seat 1 and the sleeves 113 of the second connecting seat 2 are respectively fitted onto both ends of the jet pipe 3 and connected and fixed to the jet pipe 3 by rivets 7, thereby facilitating the installation of the first connecting seat 1, the second connecting seat 2 and the jet pipe 3, and further reinforcing them by rivets 7.

[0034] Based on the above plan, as shown in the appendix Figure 4-5 As shown, the rotating shaft 4 has an air intake channel 43 that penetrates the top surface of the rotating shaft 4, and an air outlet 44 is provided on the side wall of the rotating shaft 4. The air outlet 44 communicates with the air intake channel 43 and is located between the first receiving groove 111 and the second receiving groove 112 of the first bushing 11. An air passage 19 is provided in the first connecting seat 1. The air passage 19 communicates with the air outlet 44, the sleeve 113, and the jet pipe 3. Multiple jet holes 31 are provided at intervals along the central axis of the jet pipe 3 on the side wall of the jet pipe 3. The jet holes 31 of the jet pipe 3 at both ends of the first connecting seat 1 are centrally symmetrical about the central axis of the rotating shaft 4. The airflow enters from the air intake channel 43, passes through the air outlet 44, the air passage 19, the sleeve 113, and the jet pipe 3 in sequence, and is ejected from the jet holes 31, thereby blowing the cylindrical filter element 8 and shaking off the dust attached to the filter element 8. Among them, the jet holes 31 of the jet pipes 3 at both ends of the first connecting seat 1 are centrally symmetrical about the central axis of the rotating shaft 4, and the angle α between the line connecting the center of the jet hole 31 and the central axis of the jet pipe 3 and the plane formed by the rotating shaft 4 and the jet pipe 3 is between 10 and 20°. This allows the airflow ejected from the jet hole 31 to push the first connecting seat 1, the second connecting seat 2 and the jet pipe 3 to rotate around the rotating shaft 4 on the one hand, and to blow the airflow radially along the inner wall of the filter element 8, causing the dust to be shaken off.

[0035] Furthermore, as attached Figure 4-5 As shown, since the vent 44 is located between the first receiving groove 111 and the second receiving groove 112 of the first bushing 11, there are small gaps between the first annular copper sheet 12, the first annular iron sheet 13, the first annular plastic sheet 16 and the first receiving groove 111, and there are small gaps between the second annular copper sheet 13, the second annular iron sheet 15, the second annular plastic sheet 17 and the annular graphite sheet 18 and the second receiving groove 112. The airflow from the vent 44 acts inside the first bushing 11, which can blow the dust in the small gaps out of the first bushing 11, making the first connecting seat 1 rotate more smoothly around the rotating shaft 4.

[0036] In some embodiments, as shown in the appendix Figure 4 As shown, an air inlet 32 ​​is provided on the side wall of the top end of the jet pipe 3. The air inlet 32 ​​is connected to the air passage 19, so that the top end of the jet pipe 3 can be better inserted into the sleeve 113, and the airflow enters the jet pipe 3 from the side wall of the jet pipe 3.

[0037] It should be noted that the aforementioned rotating shaft 4 has a gap of 5 to 10 micrometers between it and the inner diameter of the annular copper sheet, annular iron sheet, annular plastic sheet, and annular graphite sheet, respectively. The inner walls of the first bushing 11 and the second bushing 21 also have a gap of 5 to 10 micrometers between them and the outer diameter of the annular copper sheet, annular iron sheet, annular plastic sheet, and annular graphite sheet, respectively. This allows the annular copper sheet, annular iron sheet, annular plastic sheet, and annular graphite sheet to rotate freely during the rotation of the rotator, reducing resistance.

[0038] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A rotator, characterized in that: include: The first connecting seat has a first bushing integrally formed in the middle of the first connecting seat. The upper and lower ends of the inner wall of the first bushing are respectively provided with a first receiving groove and a second receiving groove. A first annular copper sheet and a second annular copper sheet are respectively placed in the first receiving groove and the second receiving groove. The second connecting seat has its two ends connected and fixed to the two ends of the first connecting seat through jet pipes, and the middle part of the second connecting seat has a second bushing integrally formed. The upper end of the inner wall of the second bushing is provided with a third receiving groove, and a third annular copper sheet is placed in the third receiving groove. The rotating shaft has a first limiting part and a second limiting part respectively provided on the side walls of the top and bottom ends, and the rotating shaft passes through the first annular copper sheet, the second annular copper sheet and the third annular copper sheet respectively. A nut is screwed onto the rotating shaft and located on the side of the first bushing close to the second annular copper piece, so that the first limiting part restricts the first annular copper piece in the first receiving groove, the nut restricts the second annular copper piece in the second receiving groove, and the second limiting part restricts the third annular copper piece in the third receiving groove.

2. A rotator according to claim 1, characterized in that: The first and second receiving grooves are respectively filled with a first annular iron sheet and a second annular iron sheet. The first annular iron sheet is located on the side of the first annular copper sheet near the first limiting part, and the second annular iron sheet is located on the side of the second annular copper sheet near the nut. The rotating shaft passes through the first annular iron sheet and the second annular iron sheet respectively.

3. A rotator according to claim 2, characterized in that: The first and second receiving slots are respectively filled with a first annular plastic sheet and a second annular plastic sheet. The first annular plastic sheet is located between the first annular copper sheet and the first annular iron sheet, and the second annular plastic sheet is located between the second annular copper sheet and the second annular iron sheet. The rotating shaft passes through the first annular plastic sheet and the second annular plastic sheet respectively.

4. A rotator according to claim 3, characterized in that: The second receiving groove also contains an annular graphite sheet, which is located between the second annular copper sheet and the second annular plastic sheet, and the rotating shaft passes through the annular graphite sheet.

5. A rotator according to claim 1, characterized in that: The rotator also includes a connecting piece, which is located between the first connecting seat and the second connecting seat. The two ends of the connecting piece are respectively connected and fixed to the jet pipes at both ends of the first connecting seat, and the rotating shaft passes through the middle of the connecting piece.

6. A rotator according to claim 1, characterized in that: Both ends of the first connecting seat and the second connecting seat are integrally formed with sleeves. The sleeves of the first connecting seat and the second connecting seat are respectively fitted onto the two ends of the jet pipe and are connected and fixed to the jet pipe by rivets.

7. A rotator according to claim 6, characterized in that: The rotating shaft has an air intake channel that penetrates the top surface of the rotating shaft, and an air outlet is provided on the side wall of the rotating shaft. The air outlet communicates with the air intake channel and is located between the first receiving groove and the second receiving groove of the first bushing. The first connecting seat has an air passage that communicates with the air outlet, sleeve, and jet pipe. The side wall of the jet pipe has multiple jet holes spaced apart along the central axis of the jet pipe. The jet holes of the jet pipes at both ends of the first connecting seat are centrally symmetrical about the central axis of the rotating shaft.

8. A rotator according to claim 7, characterized in that: An air inlet is provided on the side wall at the top of the jet pipe, and the air inlet communicates with the air passage.

9. A rotator according to claim 7, characterized in that: The angle between the line connecting the center of the jet hole and the central axis of the jet pipe and the plane formed by the rotating shaft and the jet pipe is between 10 and 20°.

Images