CN210025814U - Self-sealing spiral rotary sealing device for rotary barrel - Google Patents
Self-sealing spiral rotary sealing device for rotary barrel Download PDFInfo
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- CN210025814U CN210025814U CN201920658138.9U CN201920658138U CN210025814U CN 210025814 U CN210025814 U CN 210025814U CN 201920658138 U CN201920658138 U CN 201920658138U CN 210025814 U CN210025814 U CN 210025814U
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- barrel
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- 238000007789 sealing Methods 0.000 title claims abstract description 106
- 230000007246 mechanism Effects 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 15
- 241000283216 Phocidae Species 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a self-sealing spiral rotary sealing device of a rotary barrel, wherein the rotary barrel is arranged on a frame, a central cylinder coaxial with the rotary barrel is arranged at the rear end of the rotary barrel, the central cylinder and the rotary barrel integrally rotate, the self-sealing spiral rotary sealing device also comprises a rotary sealing cover sleeved on the central cylinder, a main sealing ring which is used for contacting with the rear end edge of the rotary barrel is arranged at the outer edge of the rotary sealing cover, an external thread is arranged on the central cylinder, and a nut matched with the external thread is arranged at the through hole of the rotary sealing cover; the rotary sealing device comprises an anti-rotation guide device movably arranged on the frame and used for preventing the rotary sealing cover from rotating along with the central cylinder and guiding the rotary sealing cover to move back and forth. The utility model discloses realize the purpose that the sealed lid that turns around opened and shut with the help of agitator gyration power, saved devices such as high-power oil (gas) jar among the prior art, the cost is reduced has avoided hydro-cylinder or cylinder because of jolting the problem that easily breaks down, has simple structure, convenient operation, with low costs, the reliability is high and the little advantage of maintenance volume.
Description
Technical Field
The utility model relates to a rotary sealing device for concrete mixer truck also can be used for the sealed of the rotatory tank mechanism of other similar structures.
Background
In order to solve the problems of poor sealing performance, low reliability and large maintenance amount of a traditional mixer truck rotary sealing cover device, a plurality of improved schemes are provided in the prior art, for example, the invention patent with application date of 2017, 08 and 29 and application number of CN201710753539.8 provides a concrete mixing and transporting truck with a hollow shaft rotary seal, which adopts a sealing cover structure synchronously rotating along with a mixing barrel, changes a movable sealing part between a feeding barrel and a feeding hopper, reduces the rotary radius of the movable sealing part, reduces the relative linear velocity, improves the sealing effect and reliability, and reduces the abrasion and the maintenance workload.
However, in the above technical solution, the front and rear opening and closing of the rotary sealing cover device requires a separate power system, such as an oil cylinder or an air cylinder with strong driving force, which is high in cost. On the other hand, the oil cylinder or the air cylinder is arranged on the frame, the piston rod part is connected with the rotary sealing cover, and in the transportation process of the mixer truck, due to bumping, the mixing tank and the rotary sealing cover are difficult to avoid shaking relative to the frame and other parts, so that the oil cylinder is stressed, easy to wear and break down, and the fault point and the maintenance workload are increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides a rotatory bucket self sealss spiral rotary sealing device, its purpose: the cost and the failure rate of the opening and closing action part of the rotary sealing cover are reduced.
The utility model discloses technical scheme as follows:
a spiral rotary sealing device with a self-sealing rotary barrel is characterized in that the rotary barrel is mounted on a rack and rotates under the drive of a rotary driving device, a central barrel coaxial with the rotary barrel is mounted at the rear end of the rotary barrel, the central barrel and the rotary barrel rotate integrally, the rotary sealing device comprises a rotary sealing cover, a through hole is formed in the center of the rotary sealing cover and sleeved on the central barrel through the through hole, and a main sealing ring used for being in contact with the edge of the rear end of the rotary barrel is arranged at the outer edge of the rotary sealing cover; an external thread is arranged on the outer cylindrical surface of the central cylinder, and a nut matched with the external thread is arranged at the through hole of the rotary sealing cover;
the rotary sealing device comprises an anti-rotation guide device movably mounted on the frame, and the anti-rotation guide device at least comprises a first station and a second station: when the anti-rotation guide device is positioned at the first station, the anti-rotation guide device is matched with the rotary sealing cover and is used for preventing the rotary sealing cover from rotating along with the central cylinder and guiding the rotary sealing cover to move back and forth; when the anti-rotation guide device is positioned at the second station, the anti-rotation guide device is disengaged from the rotary sealing cover, and the rotary sealing cover rotates along with the central cylinder.
As a further improvement of the device: the anti-rotation guide device is a swing frame arranged on the rack in a rotating connection mode, a guide post is arranged at the upper end of the swing frame, and the guide post is used for being in contact with a convex post on the rotary sealing cover.
As a further improvement of the device: the guide post or the convex post is also provided with a pressure sensor and also comprises an indicating device connected with the pressure sensor or a control device connected with the pressure sensor;
the indicating device is used for prompting an operator to operate the swing frame to enable the guide post to be separated from the convex post;
the control device is used for controlling the swing frame to enable the guide post to be in contact with or separated from the convex post.
As a further improvement of the device: the convex column and the guide column are in sliding fit or rolling fit.
As a further improvement of the device: and the rear end of the central cylinder is provided with a limiting convex ring for preventing the nut from falling off from the central cylinder.
As a further improvement of the device: the front end of the central cylinder is provided with an inner sealing ring, and the rear end face of the inner sealing ring is used for being in contact with the front end face of the nut.
As a further improvement of the device: the rotating barrel is a stirring barrel of a stirring truck, the frame is a frame of the stirring truck, and the central barrel is a central charging barrel in the stirring barrel;
the frame is also provided with a feed hopper, and a discharge hole of the feed hopper is communicated with the rear end of the central charging barrel;
a feeding port at the rear end of the feeding hopper is provided with a rear cover which is opened and closed back and forth in a hinged mode;
the rotary sealing device also comprises a lead screw, a connecting rod, a sliding block, a clutch mechanism, a gear and a gear ring;
the screw rod is mounted on the frame in a rotating connection mode, a threaded hole in threaded fit with the screw rod is formed in one end of the connecting rod, the other end of the connecting rod is connected with the sliding block in a rotating connection mode, a sliding groove which runs up and down is formed in the back side of the rear cover, and the sliding block is in sliding fit with the sliding groove; the gear ring is arranged on the central charging barrel, the gear is meshed with the gear ring, the gear is connected with the lead screw through the clutch mechanism, when the clutch mechanism is in a joint state, the lead screw rotates along with the gear and the gear ring, and when the clutch mechanism is in a separation state, transmission between the lead screw and the gear ring is interrupted.
As a further improvement of the device: the feeder hopper passes through link and spring mounting on the frame, link and feeder hopper fixed connection, the spring upper end with the link is connected, the lower extreme with the frame is connected.
As a further improvement of the device: the upper portion before on the feeder hopper be equipped with the splashproof lid, still be provided with jetter on the splashproof lid.
As a further improvement of the device: the upper back portion of the feed hopper is also provided with a rain-proof plate.
Compared with the prior art, the utility model discloses following positive effect has: (1) the utility model discloses an increase screw-thread fit mechanism on central feed cylinder to use mobilizable prevent changeing guider to be its direction when the gyration is sealed to move back and forth, reached with the help of agitator gyration power realize the purpose that the gyration is sealed to open and shut, saved the high-power hydro-cylinder/cylinder among the prior art, the cost is reduced, avoided hydro-cylinder or cylinder because of jolting the problem that easily breaks down, have simple structure, convenient operation, with low costs, the reliability is high and the maintenance volume is little advantage; (2) the main sealing ring has elasticity, and meanwhile, the thread matching has a self-locking characteristic, so that the structure can ensure good tightness and reliability when the rotary sealing cover is closed; (3) the utility model discloses still provide the improvement scheme of lid switching behind the gyration power drive feeder hopper that utilizes the agitator, further reduced equipment cost.
Drawings
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a partially enlarged view of a portion I in fig. 1.
Fig. 3 is a schematic structural view of the swing frame and the convex column part, and the view direction is from back to front.
Fig. 4 is a schematic view of the hopper mounted to the frame by the connecting members and springs, viewed from the rear to the front.
Detailed Description
The technical scheme of the utility model is explained in detail below with the attached drawings:
as shown in fig. 1, a spiral rotary sealing device of rotatory bucket self sealss, rotatory bucket is installed in the frame and is turned round under the drive of rotary driving device, the rear end of rotatory bucket is installed rather than coaxial a center section of thick bamboo, a center section of thick bamboo and the integrative gyration of rotatory bucket, rotary sealing device includes rotary sealing lid 2, rotary sealing lid 2 center department is equipped with the through-hole and adorns on a center section of thick bamboo through this through-hole cover, rotary sealing lid 2 outward flange department be equipped with be used for with the main sealing washer 3 that the rear end edge of rotatory bucket contacted.
In this embodiment, the rotating barrel is a stirring barrel 1 of a stirring truck, the frame is a frame of the stirring truck, and the central barrel is a central barrel 4 in the stirring barrel 1.
As shown in fig. 1 and 2, an external thread is arranged on the outer cylindrical surface of the central charging barrel 4, and a nut 7 matched with the external thread is arranged at the through hole of the rotary sealing cover 2;
the rotary sealing device comprises an anti-rotation guide device movably mounted on the frame, and the anti-rotation guide device at least comprises a first station and a second station: when the anti-rotation guide device is positioned at the first station, the anti-rotation guide device is matched with the rotary sealing cover 2 and is used for preventing the rotary sealing cover (3) from rotating along with the central cylinder and guiding the rotary sealing cover 2 to move back and forth; when the anti-rotation guide device is positioned at the second station, the anti-rotation guide device is disengaged from the rotary sealing cover 2, and the rotary sealing cover rotates along with the central charging barrel 4.
As shown in fig. 3, preferably, the anti-rotation guide device is a swing frame 10 mounted on the vehicle frame in a rotating connection manner, and a guide post is arranged at the upper end of the swing frame 10 and is used for contacting with the convex post 9 on the rotary sealing cover 2. The swing frame 10 may be manually operated or may be air cylinder driven. In this embodiment, the left and right sides of the vehicle body are respectively provided with a group of swing frames 10, and the protruding columns 9 on the rotary sealing cover 2 are two groups which are uniformly distributed.
The convex column 9 is in sliding fit or rolling fit with the guide column. The friction resistance is large during sliding fit, and the surface of the guide post is required to be smooth; a rolling fit is preferably used: the convex column 9 is provided with a rotatable slip ring, and the slip ring is in contact with the guide column, so that the convex column 9 can roll along the guide column, and friction is reduced; or, the guide post is provided with a corresponding roller or other rolling parts, and the rolling parts are in contact with the convex posts 9.
The rear end of the central charging barrel 4 is provided with a limiting convex ring for preventing the nut 7 from falling off from the external thread.
As shown in fig. 2, the front end of the central charging barrel 4 is provided with an inner sealing ring 8, and the rear end surface of the inner sealing ring 8 is used for contacting with the front end surface of the nut 7. The soft inner sealing ring 8 can play a sealing role after the rotary sealing cover 2 is closed, and meanwhile, the sealing of the main sealing ring 3 of the stirring barrel 1 is not influenced.
When the rotary sealing cover 2 needs to be opened, the swing frame 10 is manually moved, or the swing frame 10 is driven to be automatically in place through a mechanism such as an air cylinder, the stirring barrel 1 and the central material barrel 4 are controlled to rotate, the rotary sealing cover 2 rotates along with the stirring barrel 1 at the beginning until the convex column 9 contacts with the guide post, the guide post prevents the rotary sealing cover 2 from continuing to rotate, the rotary sealing cover 2 starts to move backwards along the external thread on the central material barrel 4, the cover opening action is completed, and when the rotary sealing cover 2 moves, the sliding ring on the convex column 9 rolls on the guide post. The closing action is opposite to the opening. When the cover does not need to be opened or closed, the swinging frame 10 is manually or automatically folded, so that the rotary sealing cover 2 can freely rotate.
The guide post or the convex post 9 is also provided with a pressure sensor, and further comprises an indicating device connected with the pressure sensor or a control device connected with the pressure sensor. When the contact force detected by the pressure sensor is larger, the pretightening force is enough, the rotary sealing cover 2 can be ensured to be closed, at the moment, the indicating device can prompt an operator to operate the swing frame 10 to separate the guide column from the convex column 9, or the swing frame 10 can be automatically retracted through the control device.
Because the screw thread has the auto-lock characteristic, and main sealing washer 3 has certain elasticity, consequently pretension locking back, gyration sealed lid 2 can not open.
As shown in figure 1, a feed hopper 6 is further installed on the frame, a discharge hole of the feed hopper 6 is communicated with the rear end of the central charging barrel 4, and a sealing device is arranged at the communication position.
As shown in fig. 4, the feed hopper 6 is mounted on the frame through a connecting frame 18 and a spring 19, the connecting frame 18 is fixedly connected with the feed hopper 6, the upper end of the spring 19 is connected with the connecting frame 18, and the lower end of the spring 19 is connected with the frame.
As shown in fig. 1, a rear cover 11 which is opened and closed back and forth is installed at a feed inlet at the rear end of a feed hopper 6 in a hinged manner;
the rotary sealing device also comprises a lead screw 14, a connecting rod 13, a sliding block 12, a clutch mechanism, a gear 17 and a gear ring 16;
the screw 14 is mounted on the frame in a rotating connection mode, one end of the connecting rod 13 is provided with a threaded hole in threaded fit with the screw 14, the other end of the connecting rod 13 is connected with the sliding block 12 in a rotating connection mode, the back side of the rear cover 11 is provided with a sliding groove in the vertical direction, and the sliding block 12 is in sliding fit with the sliding groove; the gear ring 16 is arranged on the central charging barrel 4, the gear 17 is meshed with the gear ring 16, the gear 17 is connected with the screw rod 14 through the clutch mechanism, when the clutch mechanism is in a joint state, the screw rod 14 rotates along with the gear 17 and the gear ring 16, and when the clutch mechanism is in a separation state, transmission between the screw rod 14 and the gear ring 16 is interrupted.
The clutch mechanism is realized in at least the following modes:
the implementation mode is as follows: the gear 17 is installed on the frame through rotating the connected mode, clutching mechanism includes clutch cylinder 15 and sliding sleeve, clutch cylinder 15's cylinder body is installed on the frame, the piston rod portion with the sliding sleeve is connected, sliding sleeve one end be used for through sliding fit mode with the tip of lead screw 14 be connected, the other end be used for through sliding fit mode with gear 17 is connected. The gear 17 is always meshed with the gear ring 16, power between the gear 17 and the lead screw 14 is transmitted by means of the sliding sleeve, when the sliding sleeve moves to one end along with the clutch cylinder 15, the sliding sleeve is disengaged from one side of the gear 17 or the sliding fit of one side of the lead screw 14, power transmission is interrupted, and when the sliding sleeve moves to the other end, the sliding fits at the two ends are in a joint state, so that power transmission is realized. The sliding fit can be flat key fit, key slot fit, spline fit and the like.
The implementation mode two is as follows: the clutch mechanism comprises a clutch cylinder 15 and a sliding sleeve, wherein the cylinder body of the clutch cylinder 15 is installed on the frame, the rod part of a piston rod is connected with the sliding sleeve, the gear 17 is installed on the sliding sleeve in a rotating connection mode, and the sliding sleeve is connected with the end part of the lead screw 14 in a sliding fit mode. The sliding sleeve is always in sliding fit with the screw 14, but the gear 17 moves along with the sliding sleeve, when the gear 17 moves to one end, the gear is disengaged from the gear ring 16, and when the gear moves to the other end, the gear is engaged with the gear ring 16.
The implementation mode is three: the clutch mechanism comprises a clutch cylinder 15 and a convex block, the cylinder body of the clutch cylinder 15 is arranged on the frame, the rod part of a piston rod is connected with the lead screw 14, the lead screw 14 can rotate and is provided with a space moving back and forth relative to the frame, the convex block is arranged at the front end of the lead screw 14, and the gear 17 is provided with a special-shaped hole matched with the convex block. After the clutch cylinder 15 drives the bump to be matched with the special-shaped hole, power transmission from the gear 17 to the screw rod 14 can be realized, and after the bump is separated from the special-shaped hole, the screw rod 14 does not rotate along with the gear 17 any more.
Obviously, the clutch mechanism may have various other structural forms, for example, the connection relationships of the above sliding fit components are interchanged, and so on, which are not described herein.
When the power transmission is engaged, the screw 14 rotates along with the central charging barrel 4, and the connecting rod 13 moves back and forth under the guidance of the sliding groove, and the rear cover 11 is controlled to open and close through the sliding block 12. After the power interruption, the rotation of the central cylinder 4 is independent of the spindle 14.
The top of the feed hopper 6 is also provided with a soft rain-proof plate 5 for preventing rain when the feed hopper 6 is half opened and the feed pipe is in place when feeding is not influenced. The top of the feed hopper 6 is also provided with a cover plate, and the cover plate is provided with a water spraying device for cleaning external threads on the rotary sealing cover 2 and the central charging barrel 4.
Claims (10)
1. The utility model provides a spiral rotary sealing device of rotatory bucket self sealss, rotatory bucket is installed in the frame, and revolves under rotary drive device's drive, install rather than coaxial a center section of thick bamboo at the rear end of rotatory bucket, a center section of thick bamboo and the integrative gyration of rotatory bucket, rotary sealing device includes rotary sealing lid (2), rotary sealing lid (2) center department is equipped with the through-hole and adorns on a center section of thick bamboo through this through-hole cover, the outward flange department of rotary sealing lid (2) be equipped with be used for with main sealing washer (3) that the rear end edge of rotatory bucket contacted, its characterized in that: an external thread is arranged on the outer cylindrical surface of the central cylinder, and a nut (7) matched with the external thread is arranged at the through hole of the rotary sealing cover (2);
the rotary sealing device comprises an anti-rotation guide device movably mounted on the frame, and the anti-rotation guide device at least comprises a first station and a second station: when the anti-rotation guide device is positioned at the first station, the anti-rotation guide device is matched with the rotary sealing cover (2) and is used for preventing the rotary sealing cover (2) from rotating along with the central cylinder and guiding the rotary sealing cover (2) to move back and forth; when the anti-rotation guide device is positioned at the second station, the anti-rotation guide device is disengaged from the rotary sealing cover (2), and the rotary sealing cover rotates along with the central cylinder.
2. A self-sealing, spiral, rotary seal for a rotary bucket according to claim 1 wherein: the anti-rotation guide device is a swing frame (10) installed on the rack in a rotating connection mode, a guide column is arranged at the upper end of the swing frame (10), and the guide column is used for being in contact with a convex column (9) on the rotary sealing cover (2).
3. A self-sealing, spiral, rotary seal for a rotary bucket according to claim 2 wherein: the guide post or the convex post (9) is also provided with a pressure sensor, and also comprises an indicating device connected with the pressure sensor or a control device connected with the pressure sensor;
the indicating device is used for prompting an operator to operate the swing frame (10) to separate the guide post from the convex post (9);
the control device is used for controlling the swing frame (10) to enable the guide column to be in contact with or separated from the convex column (9).
4. A self-sealing, spiral, rotary seal for a rotary bucket according to claim 2 wherein: the convex column (9) is in sliding fit or rolling fit with the guide column.
5. A self-sealing, spiral, rotary seal for a rotary bucket according to claim 1 wherein: the rear end of the central cylinder is provided with a limiting convex ring for preventing the nut (7) from falling off from the central cylinder.
6. A self-sealing, spiral, rotary seal for a rotary bucket according to claim 1 wherein: an inner sealing ring (8) is arranged at the front end of the central cylinder, and the rear end face of the inner sealing ring (8) is used for being in contact with the front end face of the nut (7).
7. A self-sealing spiral rotary seal assembly for a rotary drum as claimed in any one of claims 1 to 6 wherein: the rotary barrel is a stirring barrel (1) of a stirring truck, the rack is a frame of the stirring truck, and the central barrel is a central charging barrel (4) in the stirring barrel (1);
a feed hopper (6) is further mounted on the frame, and a discharge hole of the feed hopper (6) is communicated with the rear end of the central charging barrel (4);
a feed inlet at the rear end of the feed hopper (6) is provided with a rear cover (11) which is opened and closed back and forth in a hinged mode;
the rotary sealing device also comprises a lead screw (14), a connecting rod (13), a sliding block (12), a clutch mechanism, a gear (17) and a gear ring (16);
the lead screw (14) is mounted on the frame in a rotating connection mode, one end of the connecting rod (13) is provided with a threaded hole in threaded fit with the lead screw (14), the other end of the connecting rod (13) is connected with the sliding block (12) in a rotating connection mode, the back side of the rear cover (11) is provided with a sliding groove in the vertical direction, and the sliding block (12) is in sliding fit with the sliding groove; the gear ring (16) is arranged on the central charging barrel (4), the gear (17) is meshed with the gear ring (16), the gear (17) is connected with the lead screw (14) through the clutch mechanism, when the clutch mechanism is in a joint state, the lead screw (14) rotates along with the gear (17) and the gear ring (16), and when the clutch mechanism is in a separation state, transmission between the lead screw (14) and the gear ring (16) is interrupted.
8. A self-sealing, spiral, rotary seal for a rotary bucket according to claim 7 wherein: the feeding hopper (6) is installed on the frame through a connecting frame (18) and a spring (19), the connecting frame (18) is fixedly connected with the feeding hopper (6), the upper end of the spring (19) is connected with the connecting frame (18), and the lower end of the spring is connected with the frame.
9. A self-sealing, spiral, rotary seal for a rotary bucket according to claim 7 wherein: the upper portion before on feeder hopper (6) be equipped with the splashproof lid, still be provided with jetter on the splashproof lid.
10. A self-sealing, spiral, rotary seal for a rotary bucket according to claim 7 wherein: the upper back part of the feed hopper (6) is also provided with a rain-proof plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920658138.9U CN210025814U (en) | 2019-05-08 | 2019-05-08 | Self-sealing spiral rotary sealing device for rotary barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920658138.9U CN210025814U (en) | 2019-05-08 | 2019-05-08 | Self-sealing spiral rotary sealing device for rotary barrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210025814U true CN210025814U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920658138.9U Withdrawn - After Issue CN210025814U (en) | 2019-05-08 | 2019-05-08 | Self-sealing spiral rotary sealing device for rotary barrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210025814U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109986698A (en) * | 2019-05-08 | 2019-07-09 | 盛镝 | A kind of spiral rotary seal rotating bucket self-sealing |
-
2019
- 2019-05-08 CN CN201920658138.9U patent/CN210025814U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109986698A (en) * | 2019-05-08 | 2019-07-09 | 盛镝 | A kind of spiral rotary seal rotating bucket self-sealing |
| WO2020224335A1 (en) * | 2019-05-08 | 2020-11-12 | 盛镝 | Automatically sealing screw-on rotary sealing apparatus for rotating barrel |
| CN109986698B (en) * | 2019-05-08 | 2024-04-19 | 盛镝 | Self-sealing spiral rotary sealing device for rotary barrel |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200207 Effective date of abandoning: 20240419 |
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