Integrated single-head rotating shaft group with air tightness

Abstract

The integrated single-head rotating shaft set comprises a shaft seat and a flange shaft, the shaft seat is connected to the outer portion of the flange shaft in a sleeved mode, and a guide seat is arranged at the position, between a flange plate and the shaft seat, of the outer portion of the flange shaft in a sleeved mode. Two rolling bearings are arranged between the shaft seat and the flange shaft in a sleeving manner, and the two rolling bearings are in close fit with the flange shaft; an outer clamping spring and an inner clamping spring which are used for preventing the rolling bearing from falling off are sleeved outside the flange shaft in the shaft seat; the joint of the flange shaft and the shaft seat is sleeved with a sealing ring; according to the integrated single-head rotating shaft set with the air tightness, the coaxiality of parts is achieved through the integrated design and the simple matching relation, the number of the parts is reduced, the cost is reduced, and meanwhile the service life is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary shaft groups, and specifically relates to an integrated single-head rotary shaft group with airtightness. Background Technique

[0002] At present, the rotary shaft groups with airtight requirements mostly adopt the structure of a bearing seat, a flange shaft and a rotary joint connected together. The flange shaft passes through the bearing seat and is fixed by a set screw. The other end is threadedly fastened to the rotary joint to ensure airtightness while having the function of single-head rotation.

[0003] The existing technical solutions have many components, complex mating relationships, and it is difficult to ensure coaxiality, which easily causes failures such as air leakage and water leakage. Due to air leakage and water leakage, corrosive liquids will erode the bearings inside the rotary joint, resulting in rust and jamming of the rotary joint, and ultimately causing component failure, greatly reducing the service life, having high processing precision requirements and high costs. Therefore, an integrated single-head rotary shaft group with airtightness is needed to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide an integrated single-head rotary shaft group with airtightness to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an integrated single-head rotary shaft group with airtightness, including a shaft seat and a flange shaft. The shaft seat is sleeved outside the flange shaft, and a guide seat is sleeved between the flange and the shaft seat on the outside of the flange shaft.

[0006] Two rolling bearings are sleeved between the shaft seat and the flange shaft, and the two rolling bearings are closely fitted with the flange shaft.

[0007] An outer snap ring and an inner snap ring for preventing the rolling bearings from coming off are sleeved inside the shaft seat outside the flange shaft.

[0008] A sealing ring is sleeved at the connection between the flange shaft and the shaft seat.

[0009] The guide seat includes a shaft cylinder a and a shaft cylinder b sleeved outside the flange shaft. Connecting plates are installed on the outer walls on both sides of the shaft cylinder a and the shaft cylinder b, and the two connecting plates are connected by fasteners.

[0010] The fasteners include a fastening screw and an anti-loosening screw, and a fastening nut is screwed on the outside of the fastening screw.

[0011] An anti-loosening thread groove is opened at the bottom end of the fastening screw, and the anti-loosening screw is screwed into the anti-loosening thread groove.

[0012] An anti-loosening cylinder is sleeved outside the anti-loosening screw, and three limit posts are installed on the outer wall of the anti-loosening cylinder, and the three limit posts are distributed in a triangular shape.

[0013] The inner wall of each limit post is provided with a spiral groove that cooperates with the fastening screw.

[0014] The inner walls of the shaft cylinder a and the shaft cylinder b are evenly and equidistantly provided with driving cavities along their axes. A guiding component is installed inside the driving cavity, and the guiding component is arranged in a fitting manner with the flange shaft.

[0015] Preferably, the inner wall of the anti - detachment cylinder is provided with reverse internal threads, the outer part of the anti - detachment screw in contact with the anti - detachment cylinder is provided with reverse external threads, and the reverse internal threads and the reverse external threads cooperate with each other.

[0016] Preferably, a turntable is installed at the end of the anti - detachment screw, and a cross groove is provided on the outer wall of the turntable.

[0017] Preferably, an annular rotating groove is provided on the outer wall of the fastening nut, and the end of the limit post is arranged in the annular rotating groove.

[0018] Preferably, a fixing ring is fixedly installed at the upper end of the outer part of the fastening screw. An annular pressing piece, a spring and an annular rubber piece are sleeved on the circumferential surface of the fastening screw, and an extrusion block is fixedly installed at the lower edge of the annular pressing piece.

[0019] Preferably, the guiding component includes a fixing plate installed inside the driving cavity. A telescopic rod is installed at the top of the fixing plate, a universal joint seat is installed at the top of the telescopic rod, a universal joint ball is installed inside the universal joint seat, and a spring a is sleeved on the outer part of the telescopic rod between the fixing plate and the universal joint seat.

[0020] Preferably, the inner wall of the universal joint seat is evenly provided with rotating cavities, balls are installed inside the rotating cavities, and the balls are arranged in a fitting manner with the universal joint balls.

[0021] Preferably, the guiding component includes a fixing body installed inside the driving cavity. A spring b is installed inside the fixing body, a top plate is installed at the top of the spring b, and an arc - shaped plate is installed at the top of the top plate.

[0022] Preferably, stabilizing cavities are provided at both ends of the spring b at the top of the fixing body. Stabilizing rods are installed on both sides of the bottom end of the top plate, and the stabilizing rods are inserted into the stabilizing cavities.

[0023] Preferably, stabilizing plates are installed at the ends of the stabilizing rods, and the stabilizing plates are arranged inside the stabilizing cavities.

[0024] Compared with the prior art, this solution designs an integrated single - head rotating shaft group with airtightness, and has the following beneficial effects:

[0025] (1) Through the integrated design, the coaxiality of parts is solved through a simple cooperation relationship, the number of parts is reduced, and while the cost is reduced, the service life is guaranteed.

[0026] (2) Two sealing rings ensure airtightness while preventing liquid corrosion of the rolling bearings, thereby extending their service life. The two rolling bearings, through close cooperation with the flange shaft and the shaft seat, ensure the coaxiality of the entire part, reducing the number of machining surfaces that require fine machining. The number of parts in this patent is far less than that of existing technical solutions, thus reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the utility model;

[0028] Figure 2 It is a cross-sectional view of the utility model;

[0029] Figure 3 This is a schematic diagram of the flange shaft and guide seat of the utility model;

[0030] Figure 4 This is a schematic diagram of the guide seat of the utility model;

[0031] Figure 5 A schematic diagram of a fastener of the present utility model;

[0032] Figure 6 This is a schematic diagram of the anti-drop cylinder of the present utility model;

[0033] Figure 7 This is a schematic diagram of the anti-slip screw of the utility model;

[0034] Figure 8 This is a schematic diagram of a guide assembly according to a first embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of a guide assembly according to a second embodiment of the present invention.

[0036] In the figure: 1 shaft seat, 2 sealing ring, 3 external card spring, 4 rolling bearing, 5 internal card spring, 6 flange shaft, 7 guide seat, 8 connecting plate, 9 fastener, 10 drive chamber, 11 guide assembly, 111 telescopic rod, 112 fixed plate, 113 spring a, 114 universal seat, 115 rotating chamber, 116 universal ball, 117 ball, 121 fixed body, 122 spring b, 123 top plate, 124 stable chamber, 125 stable plate, 126 stable rod, 127 arc plate, 13 fastening nut, 14 anti-slip screw groove, 15 anti-slip cylinder, 16 anti-slip screw, 17 annular rotating groove, 18 fixing ring, 19 extrusion block, 20 annular pressure piece, 21 annular rubber sheet, 22 spring, 23 limiting ring, 24 spiral groove, 25 reverse external thread, 26 turntable, 27 reverse internal thread. DETAILED DESCRIPTION

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1 to 8 , the first technical solution provided by the present invention: an integrated single-head rotating shaft group with airtightness, including a shaft seat 1 and a flange shaft 6. The shaft seat 1 is sleeved outside the flange shaft 6, and a guide seat 7 is sleeved between the flange and the shaft seat 1 on the outside of the flange shaft 6; two rolling bearings 4 are sleeved between the shaft seat 1 and the flange shaft 6, and the two rolling bearings 4 are tightly fitted with the flange shaft 6; an outer snap ring 5 and an inner snap ring 3 for preventing the rolling bearings 4 from coming out are sleeved inside the shaft seat 1 outside the flange shaft 6; a sealing ring 2 is sleeved at the connection between the flange shaft 6 and the shaft seat 1;

[0039] The rolling bearings 4 are tightly fitted with the flange shaft 6, and the outer snap ring 3 is installed to prevent the rolling bearings from coming out. The outer walls of the two rolling bearings 4 are tightly fitted with the inner wall of the shaft seat 1 to ensure the coaxiality of the rotating shaft group. The two sealing rings are installed inside the shaft seat and closely fit with the flange shaft, which can prevent the corrosive liquid inside the pipeline from corroding the bearings while ensuring airtightness, increasing the service life of the rotating shaft group. The outer snap ring 3 is installed inside the shaft seat 1 to prevent the flange shaft 6 from coming out of the shaft seat 1.

[0040] The guide seat 7 includes a shaft cylinder a71 and a shaft cylinder b72 sleeved outside the flange shaft 6. Connecting plates 8 are installed on the outer walls on both sides of the shaft cylinder a71 and the shaft cylinder b72, and the two connecting plates 8 are connected by a fastener 9;

[0041] The fastener 9 includes a fastening screw 12 and an anti-loosening screw 16. A fastening nut 13 is screwed on the outside of the fastening screw 12; an anti-loosening screw groove 14 is opened at the bottom end of the fastening screw 12, and the anti-loosening screw 16 is screwed into the anti-loosening screw groove 14; an anti-loosening cylinder 15 is sleeved on the outside of the anti-loosening screw 16, and three limit posts 23 are installed on the outer wall of the anti-loosening cylinder 15, and the three limit posts 23 are distributed in a triangular shape; a spiral groove 24 matching with the fastening screw 12 is opened on the inner wall of each limit post 23;

[0042] By providing an anti-loosening screw groove 14 at the bottom end of the fastening screw 12, screwing the anti-loosening screw 16 into it, and using the three limit posts 23 on the anti-loosening cylinder 15 installed outside the anti-loosening screw 16 to hold the fastening nut 13, the circumferential limit of the fastening nut 13 is achieved, and the anti-loosening cylinder 15 and the anti-loosening screw 16 are limited by the engagement of the spiral groove 24 on the limit post 23 and the fastening screw 12.

[0043] The inner walls of the shaft cylinders a71 and b72 are evenly and equidistantly provided with driving cavities 10 along their axes. A guiding component 11 is installed inside the driving cavity 10, and the guiding component 11 is arranged in contact with the flange shaft 6.

[0044] The inner wall of the anti - detachment cylinder 15 is provided with reverse internal threads 25, and the outer part of the anti - detachment screw 16 in contact with the anti - detachment cylinder 15 is provided with reverse external threads 27, and the reverse internal threads 25 and the reverse external threads 27 are matched with each other.

[0045] The end of the anti - detachment screw 16 is installed with a turntable 26, and a cross - slot is provided on the outer wall of the turntable 26. The threads on the outer part of the anti - detachment screw 16 are divided into two parts. The front part is matched with the internal threads of the anti - detachment screw groove 14, and the rear part is matched with the reverse internal threads 25 of the anti - detachment cylinder 15, so as to install the anti - detachment cylinder 15 on the outside of the anti - detachment screw 16.

[0046] The outer wall of the fastening nut 13 is provided with an annular rotating groove 17, and the end of the limiting column 23 is arranged in the annular rotating groove 17.

[0047] A fixing ring 18 is fixedly installed at the upper end of the outer part of the fastening screw 12. An annular pressing piece 20, a spring 22 and an annular rubber piece 21 are sleeved on the circumferential surface of the fastening screw 12, and an extrusion block 19 is fixedly installed at the lower edge of the annular pressing piece 20.

[0048] The guiding component 11 includes a fixing plate 112 installed inside the driving cavity 10. A telescopic rod 111 is installed at the top of the fixing plate 112. A universal joint seat 114 is installed at the top of the telescopic rod 111. A universal ball 116 is installed inside the universal joint seat 114. A spring a113 is sleeved outside the telescopic rod 111 between the fixing plate 112 and the universal joint seat 114. Through the cooperation of the telescopic rod 111 and the spring a113, the universal ball 116 in the universal joint seat 114 is brought into contact with the outer wall of the flange shaft 6.

[0049] The inner wall of the universal joint seat 114 is evenly provided with rotating cavities 115. A ball 117 is installed inside the rotating cavity 115, and the ball 117 is arranged in contact with the universal ball 116, which can improve the rotation efficiency of the universal ball 116.

[0050] The working principle of the first embodiment: The rolling bearing 4 is closely fitted with the flange shaft 6, and an outer snap - ring 3 is installed to prevent the rolling bearing from coming off. The outer walls of the two rolling bearings 4 are closely fitted with the inner wall of the shaft seat 1 to ensure the coaxiality of the rotating shaft group. The two sealing rings are installed inside the shaft seat and are closely fitted with the flange shaft, which can ensure airtightness and prevent the corrosive liquid inside the pipeline from corroding the bearing, increasing the service life of the rotating shaft group. The outer snap - ring 3 is installed inside the shaft seat 1 to prevent the flange shaft 6 from coming out of the shaft seat 1.

[0051] Please refer toFigures 1 to 9 , the second technical solution provided by the present utility model: an integral single-head rotating shaft group with airtightness, including a shaft seat 1 and a flange shaft 6. The shaft seat 1 is sleeved outside the flange shaft 6, and a guide seat 7 is sleeved between the flange and the shaft seat 1 outside the flange shaft 6; two rolling bearings 4 are sleeved between the shaft seat 1 and the flange shaft 6, and the two rolling bearings 4 are closely fitted with the flange shaft 6; outside the flange shaft 6 inside the shaft seat 1, an outer snap ring 5 and an inner snap ring 3 for preventing the rolling bearings 4 from coming off are sleeved; a sealing ring 2 is sleeved at the connection between the flange shaft 6 and the shaft seat 1;

[0052] The rolling bearing 4 is closely fitted with the flange shaft 6, and the outer snap ring 3 is installed to prevent the rolling bearing from coming off. The outer walls of the two rolling bearings 4 are closely fitted with the inner wall of the shaft seat 1 to ensure the coaxiality of the rotating shaft group. The two sealing rings are installed inside the shaft seat and closely fit with the flange shaft, which can prevent the corrosive liquid inside the pipeline from corroding the bearing while ensuring airtightness, and increase the service life of the rotating shaft group. The outer snap ring 3 is installed inside the shaft seat 1 to prevent the flange shaft 6 from coming out of the shaft seat 1.

[0053] The guide seat 7 includes a shaft cylinder a71 and a shaft cylinder b72 sleeved outside the flange shaft 6. Connecting plates 8 are installed on the outer walls on both sides of the shaft cylinder a71 and the shaft cylinder b72, and the two connecting plates 8 are connected by a fastener 9;

[0054] The fastener 9 includes a fastening screw 12 and an anti-loosening screw 16. A fastening nut 13 is screwed outside the fastening screw 12; an anti-loosening thread groove 14 is opened at the bottom end of the fastening screw 12, and the anti-loosening screw 16 is screwed into the anti-loosening thread groove 14; an anti-loosening cylinder 15 is sleeved outside the anti-loosening screw 16, and three limit posts 23 are installed on the outer wall of the anti-loosening cylinder 15, and the three limit posts 23 are distributed in a triangle; a spiral groove 24 matching the fastening screw 12 is opened on the inner wall of each limit post 23;

[0055] By providing an anti-loosening thread groove 14 at the bottom end of the fastening screw 12, screwing the anti-loosening screw 16 into it, and using the three limit posts 23 on the anti-loosening cylinder 15 outside the anti-loosening screw 16 to hold the fastening nut 13, the circumferential limit of the fastening nut 13 is achieved, and the anti-loosening cylinder 15 and the anti-loosening screw 16 are limited by the engagement of the spiral groove 24 on the limit post 23 and the fastening screw 12.

[0056] The inner walls of the shaft cylinder a71 and the shaft cylinder b72 are evenly and equidistantly provided with driving cavities 10 along their axes, and a guiding component 11 is installed inside the driving cavities 10, and the guiding component 11 is arranged in contact with the flange shaft 6.

[0057] The inner wall of the anti - detachment cylinder 15 is provided with reverse internal threads 25, and the outer part of the anti - detachment screw rod 16 in contact with the anti - detachment cylinder 15 is provided with reverse external threads 27, and the reverse internal threads 25 and the reverse external threads 27 are matched with each other.

[0058] A turntable 26 is installed at the end of the anti - detachment screw rod 16, and a cross - slot is provided on the outer wall of the turntable 26. The threads on the outer part of the anti - detachment screw rod 16 are divided into two parts. The front part is matched with the internal threads of the anti - detachment screw groove 14, and the rear part is matched with the reverse internal threads 25 of the anti - detachment cylinder 15, so as to install the anti - detachment cylinder 15 on the outer part of the anti - detachment screw rod 16.

[0059] An annular rotating groove 17 is provided on the outer wall of the fastening nut 13, and the end of the limiting column 23 is arranged in the annular rotating groove 17.

[0060] A fixing ring 18 is fixedly installed at the upper end of the outer part of the fastening screw rod 12. An annular pressing piece 20, a spring 22 and an annular rubber piece 21 are sleeved on the circumferential surface of the fastening screw rod 12. An extrusion block 19 is fixedly installed at the lower edge of the annular pressing piece 20.

[0061] The guiding component 11 includes a fixing body 121 installed inside the driving cavity 10. A spring b 122 is installed inside the fixing body 121. The top of the spring b 122 is installed with a top plate 123, and the top of the top plate 123 is installed with an arc - shaped plate 127.

[0062] Stable cavities 124 are provided at both ends of the spring b 122 at the top of the fixing body 121. Stable rods 126 are installed on both sides of the bottom end of the top plate 123, and the stable rods 126 are inserted into the stable cavities 124.

[0063] A stable plate 125 is installed at the end of the stable rod 126, and the stable plate 125 is arranged inside the stable cavity 124.

[0064] Among them, the difference from the first technical solution is that through guiding components with different structures, the efficiency of the flange shaft 6 can be improved.

[0065] Other components in the second technical solution are the same as those in the first technical solution.

[0066] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above - mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0067] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated single-headed rotating shaft group with airtightness, comprising a shaft seat (1) and a flange shaft (6), characterized in that: The shaft seat (1) is sleeved outside the flange shaft (6), and a guide seat (7) is sleeved between the flange and the shaft seat (1) on the outside of the flange shaft (6); Two rolling bearings (4) are sleeved between the shaft seat (1) and the flange shaft (6), and the two rolling bearings (4) are in close fit with the flange shaft (6); An outer snap ring (5) and an inner snap ring (3) for preventing the rolling bearing (4) from coming off are sleeved inside the shaft seat (1) outside the flange shaft (6); A sealing ring (2) is sleeved at the connection between the flange shaft (6) and the shaft seat (1); The guide seat (7) includes a shaft cylinder a (71) and a shaft cylinder b (72) sleeved outside the flange shaft (6). Connecting plates (8) are installed on the outer walls on both sides of the shaft cylinder a (71) and the shaft cylinder b (72), and the two connecting plates (8) are connected by fasteners (9); The fastener (9) includes a fastening screw (12) and an anti - detachment screw (16), and a fastening nut (13) is screwed on the outside of the fastening screw (12); An anti - detachment thread groove (14) is opened at the bottom end of the fastening screw (12), and the anti - detachment screw (16) is screwed in the anti - detachment thread groove (14); An anti - detachment cylinder (15) is sleeved outside the anti - detachment screw (16), and three limit posts (23) are installed on the outer wall of the anti - detachment cylinder (15), and the three limit posts (23) are distributed in a triangular shape; A spiral groove (24) matching with the fastening screw (12) is opened on the inner wall of each limit post (23); Driving cavities (10) are evenly and equidistantly opened along the axis on the inner walls of the shaft cylinder a (71) and the shaft cylinder b (72), and a guide component (11) is installed inside the driving cavity (10), and the guide component (11) is arranged in contact with the flange shaft (6).

2. The one-piece single-head rotating shaft group with airtightness according to claim 1, characterized in that: An inverse internal thread (25) is opened on the inner wall of the anti - detachment cylinder (15), and an inverse external thread (27) is opened at the joint where the outside of the anti - detachment screw (16) is in contact with the anti - detachment cylinder (15), and the inverse internal thread (25) and the inverse external thread (27) are matched with each other.

3. The one-piece single-head rotating shaft group with airtightness according to claim 2, characterized in that: A turntable (26) is installed at the end of the anti - detachment screw (16), and a cross groove is opened on the outer wall of the turntable (26).

4. A one-piece single-head rotating shaft group with airtightness according to claim 1, characterized in that: An annular rotating groove (17) is opened on the outer wall of the fastening nut (13), and the end of the limit post (23) is arranged in the annular rotating groove (17).

5. The one-piece single-head rotating shaft group with airtightness according to claim 1, characterized in that: A fixed ring (18) is fixedly installed at the upper end of the outside of the fastening screw (12). An annular pressing piece (20), a spring (22) and an annular rubber piece (21) are sleeved on the circumferential surface of the fastening screw (12), and an extrusion block (19) is fixedly installed at the lower edge of the annular pressing piece (20).

6. The one-piece single-head rotating shaft group with airtightness according to claim 1, wherein: The guiding component (11) includes a fixing plate (112) installed inside the driving cavity (10). A telescopic rod (111) is installed at the top end of the fixing plate (112). A universal joint seat (114) is installed at the top end of the telescopic rod (111). A universal ball (116) is installed inside the universal joint seat (114). A spring a (113) is sleeved outside the telescopic rod (111) between the fixing plate (112) and the universal joint seat (114).

7. The one-piece single-head rotating shaft group with airtightness according to claim 6, wherein: Rotating cavities (115) are evenly formed in the inner wall of the universal joint seat (114). A ball (117) is installed inside the rotating cavity (115). The ball (117) is arranged in contact with the universal ball (116).

8. The one-piece single-head rotating shaft group with airtightness according to claim 1, characterized in that: The guiding component (11) includes a fixed body (121) installed inside the driving cavity (10). A spring b (122) is installed inside the fixed body (121). A top plate (123) is installed at the top end of the spring b (122). An arc-shaped plate (127) is installed at the top end of the top plate (123).

9. The one-piece single-head rotating shaft group with airtightness according to claim 8, characterized in that: Stabilizing cavities (124) are formed at both ends of the spring b (122) at the top end of the fixed body (121). Stabilizing rods (126) are installed on both sides of the bottom end of the top plate (123). The stabilizing rods (126) are inserted into the stabilizing cavities (124).

10. A one-piece single-head rotating shaft group with airtightness according to claim 9, characterized in that: A stabilizing plate (125) is installed at the end of the stabilizing rod (126). The stabilizing plate (125) is arranged inside the stabilizing cavity (124).

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