CN211145347U - Rotary limiting type stern shaft sealing device - Google Patents
Rotary limiting type stern shaft sealing device Download PDFInfo
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- CN211145347U CN211145347U CN201921832146.7U CN201921832146U CN211145347U CN 211145347 U CN211145347 U CN 211145347U CN 201921832146 U CN201921832146 U CN 201921832146U CN 211145347 U CN211145347 U CN 211145347U
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Abstract
The utility model discloses a rotary limiting type stern shaft sealing device, which comprises a stern shaft, a connecting plate, a gland, an extrusion mechanism, a sealing ring, a synchronous mechanism and a limiting mechanism; the utility model discloses stop gear has been add, in the relative inboard department of two extrusion mechanism's slide bar, a side-mounting limiting plate, opposite side installation limit toothed plate, when the slide bar carries out horizontal migration, can drive limit toothed plate and the mutual interlock motion of rotating gear, limit toothed plate can drive rotating gear and rotate, rotating gear drives spacing frame and rotates the butt in limiting plate downside or limit toothed plate's downside, and no matter how the level rotates, when limit frame rotates the butt in limiting plate downside or limit toothed plate's downside, the extreme position of regulation has been reached promptly, so can prevent that linkage ring and horizontal drive piece from taking place to dislocate.
Description
Technical Field
The utility model relates to a rotate spacing formula stern shaft seal device.
Background
The tail shaft is also called tail shaft. The tail shaft is the last section of shaft in the shaft system, and the flange at the head end is connected with the flange of the middle shaft by a close-fitting bolt; the tail end of the propeller is in a cone shape and is used for installing a propeller. The stern shaft is forged by high-quality carbon steel. At present, in the marine industry, in order to prevent sea water, lake water along the infiltration of stern central siphon to the hull in, just must carry out the security strictly sealed in order to guarantee the ship to the stern axle, the current sealing device who utilizes in the stern axle generally seals through the sealing washer of a plurality of junctions, but the phenomenon that sealed effect is not good can take place to present sealing washer after using for a long time, the utility model discloses need provide a can keep sealed effect, sealed effectual rotation spacing formula stern shaft sealing device.
SUMMERY OF THE UTILITY MODEL
To the weak point of above-mentioned prior art, the utility model provides a problem do: the rotary limiting type stern shaft sealing device has a limiting structure, can be synchronously driven, can keep a sealing effect and is good in sealing effect.
In order to solve the above problem, the utility model discloses the technical scheme who takes as follows:
a rotary limiting type stern shaft sealing device comprises a stern shaft, a connecting plate, a gland, an extrusion mechanism, a sealing ring, a synchronizing mechanism and a limiting mechanism; a gland is arranged on one side of the connecting plate; the gland is in a U-shaped ring structure; the connecting plate and the gland enclose a sealing cavity; the screw shaft is connected to a sealing cavity defined by the connecting plate and the gland in a penetrating manner; two ends of the sealing cavity are respectively provided with an extrusion mechanism; two ends of the stern shaft are respectively sleeved with a sealing ring; a sealing ring is attached to one end of the stern shaft and positioned on the inner side ring surface of the connecting plate; the other end of the stern shaft is attached and installed with another sealing ring on the inner side ring surface of the cover plate; the sealing rings at two ends of the stern shaft are respectively driven by an extrusion mechanism; the extrusion mechanism comprises a sliding rod, an axial driving ring, an axial elastic ring, a linkage ring, a transverse driving block and a transverse elastic body; the end faces of the inner sides of the sealing rings are respectively abutted against one end face of one axial elastic ring; the other end surfaces of the axial elastic rings are respectively fixedly connected with an axial driving ring; the upper side and the lower side of the axial driving ring are respectively provided with a sliding rod; the same outer side of the sliding rods at two sides of the axial driving ring is provided with a linkage ring; the upper side and the lower side of one end of the linkage ring are fixed on the sliding rod, and the other end surface of the linkage ring is respectively abutted against a plurality of uniformly distributed transverse driving blocks; the inner sides of the transverse driving blocks are respectively fixedly connected with a transverse elastic body; one end of the transverse elastic body is fixed on the inner side of the transverse driving block, and the other end of the transverse elastic body is pressed against the outer ring surface of the sealing ring; when the linkage ring moves axially, the transverse driving block is driven to move along the radial direction of the sealing ring; the sliding rod is connected to the pressure cover in a sliding and clamping manner; the outer end of the sliding rod extends to the outer side of the gland; the synchronous mechanism comprises a driving rod, a clamping rod and a driving internal thread cylinder; the clamping rod is vertically arranged on the outer side surface of the gland; the outer end of the clamping rod is rotationally clamped with a driving rod; the middle of the driving rod is rotatably clamped at the outer end part of the clamping rod; external threads are respectively arranged on two sides of the driving rod; the driving rod is respectively connected with a driving internal thread cylinder through external threads on two sides; the driving internal thread cylinder is in threaded rotary connection with the external thread of the driving rod; the outer ends of the driving internal thread cylinders are respectively and rotationally clamped on the inner side surface of the sliding rod; the limiting mechanism comprises a limiting plate, a rotating gear, a limiting toothed plate and a limiting frame; the limiting frame is of a rectangular frame structure with an opening in the middle of the upper end; a limit plate is arranged on the side part of one sliding rod, and a limit toothed plate is arranged on the side part of the other sliding rod; the middle of the end part of the limiting plate is provided with a mounting port; two sides of the upper end of the limiting frame are rotatably clamped on two sides of the mounting opening of the limiting plate respectively; the rotating gear is arranged at the mounting opening in the middle of the end part of the limiting plate; two sides of the rotating gear are respectively and fixedly connected with two sides of an opening at the upper end of the limiting frame; the limiting toothed plate is connected to the upper side of the rotating gear through meshing of the gear; the limiting toothed plate drives the rotating gear to rotate; the rotating gear drives the limiting frame to rotate and abut against the lower side of the limiting plate or the lower side of the limiting toothed plate.
Furthermore, the extrusion mechanism also comprises a guide rod; a plurality of guide rods are uniformly distributed on the periphery of the inner walls of the two ends of the sealing cavity; and a transverse driving block is sleeved on each guide rod in a sliding manner.
Furthermore, a guide groove is arranged on the transverse driving block; the cross sections of the guide rod and the guide groove are both rectangular structures.
Furthermore, a conical driving ring surface is arranged on the other end surface of the linkage ring; the side part of the transverse driving block is provided with a driven inclined plane; the driven inclined plane of the transverse driving block is jointed and connected on the conical driving ring surface of the linkage ring in a pressing mode.
Furthermore, the sliding rod is provided with sliding clamping teeth; the gland is provided with a sliding clamping groove; the sliding rod is in sliding clamping connection with the sliding clamping groove on the gland through the sliding clamping tooth.
Furthermore, the sealing ring is made of high-elasticity rubber material.
Furthermore, a plurality of connecting threaded holes are uniformly formed in the periphery of one side of the connecting plate; a plurality of through connecting grooves are uniformly formed in the periphery of one side of the gland; a connecting screw is respectively connected in the penetrating groove of the gland in a penetrating way; one end of the connecting screw penetrates through the penetrating groove of the gland and then is in threaded connection with the connecting threaded hole of the connecting plate.
Furthermore, a pressing elastic body is arranged in the driving internal thread cylinder; the pressing elastic body is elastically compressed and pressed on the end part of the driving rod.
The beneficial effects of the utility model
1. The utility model discloses stop gear has been add, in the relative inboard department of two extrusion mechanism's slide bar, a side-mounting limiting plate, opposite side installation limit toothed plate, when the slide bar carries out horizontal migration, can drive limit toothed plate and the mutual interlock motion of rotating gear, limit toothed plate can drive rotating gear and rotate, rotating gear drives spacing frame and rotates the butt in limiting plate downside or limit toothed plate's downside, and no matter how the level rotates, when limit frame rotates the butt in limiting plate downside or limit toothed plate's downside, the extreme position of regulation has been reached promptly, so can prevent that linkage ring and horizontal drive piece from taking place to dislocate.
2. The utility model discloses having add lazytongs, the accessible actuating lever carries out the normal position rotation in joint pole upper end for the actuating lever utilizes the external screw thread of both sides to drive the internal thread section of thick bamboo of drive in step and carries out rotatory horizontal migration, and so accessible drive internal thread section of thick bamboo drives the slide bar and carries out horizontal migration, so reaches synchronous drive's effect.
3. The utility model discloses a drive internal thread section of thick bamboo supports and presses the slide bar and slides, the slide bar is when the level removes to the sealing ring direction, can drive axial drive ring and the synchronous horizontal motion of link ring, drive the axial elastic ring compression and extrude the inner anchor ring of sealing ring during axial drive ring horizontal motion, make the sealing ring inseparabler with the laminating of connecting plate and gland in the axial, meanwhile, can drive a plurality of horizontal drive blocks during the synchronous horizontal motion of link ring and remove to the lateral surface of sealing ring, drive horizontal elastomer compression when horizontal drive block removes, and make the lateral surface of horizontal elastomer extrusion sealing ring, so make between sealing ring and the stern axle laminating inseparabler, so synchronous drive has increased the leakproofness of the inboard anchor ring of sealing ring and outer end anchor ring.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the local enlarged structure of the extruding mechanism of the present invention.
Fig. 3 is a schematic cross-sectional view of the gland, the sliding rod and the axial driving ring according to the present invention.
Fig. 4 is a schematic structural diagram of the synchronizing mechanism of the present invention.
Fig. 5 is a schematic side view of the limiting mechanism of the present invention.
Fig. 6 is a schematic view of the vertical downward structure of the limiting frame of the present invention.
Fig. 7 is the utility model discloses the structure sketch of spacing frame rotation butt in the downside of spacing pinion rack.
Fig. 8 is the utility model discloses spacing frame rotates the structure sketch map of butt in the limiting plate downside.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 8, a rotary limiting type stern shaft sealing device comprises a stern shaft 1, a connecting plate 2, a gland 5, an extrusion mechanism 3, a sealing ring 4, a synchronizing mechanism 6 and a limiting mechanism 7. A gland 5 is arranged on one side of the connecting plate 2; the gland 5 is in a U-shaped ring structure; the connecting plate 2 and the gland 5 enclose a sealing cavity 51; the screw shaft 1 is connected on a sealing cavity 51 enclosed by the connecting plate 2 and the gland 5 in a penetrating way; two ends of the sealed cavity 51 are respectively provided with an extrusion mechanism 3; two ends of the stern shaft 1 are respectively sleeved with a sealing ring 4; a sealing ring 4 is attached to and arranged at one end of the stern shaft 1 and positioned on the inner side annular surface of the connecting plate 2; the other end of the stern shaft 1 is attached and provided with another sealing ring 4 on the inner side ring surface of the cover plate 5; the sealing rings 4 at the two ends of the stern shaft 1 are respectively driven by an extrusion mechanism 3; the pressing mechanism 3 comprises a sliding rod 33, an axial driving ring 32, an axial elastic ring 31, a linkage ring 34, a transverse driving block 35 and a transverse elastic body 36; the inner side end surfaces of the sealing rings 4 are respectively abutted against one end surface of one axial elastic ring 31; the other end surfaces of the axial elastic rings 31 are respectively fixedly connected with an axial driving ring 32; the upper side and the lower side of the axial driving ring 32 are respectively provided with a sliding rod 33; the same outer side of the sliding rods 33 at both sides of the axial driving ring 32 is provided with a linkage 34; the upper side and the lower side of one end of the linkage ring 34 are fixed on the sliding rod 33, and the other end surface of the linkage ring 34 is respectively abutted against a plurality of uniformly distributed transverse driving blocks 35; the inner sides of the transverse driving blocks 35 are fixedly connected with a transverse elastic body 36 respectively; one end of the transverse elastic body 36 is fixed on the inner side of the transverse driving block 35, and the other end of the transverse elastic body is pressed against the outer ring surface of the sealing ring 4; the linkage ring 34 drives the transverse driving block 35 to move along the radial direction of the sealing ring 4 when moving axially; the sliding rod 33 is connected to the gland 5 in a sliding and clamping manner; the outer end of the sliding rod 33 extends to the outer side of the gland 5; the synchronous mechanism 6 comprises a driving rod 62, a clamping rod 61 and a driving internal thread cylinder 63; the clamping rod 61 is vertically arranged on the outer side surface of the gland 5; the outer end of the clamping rod 61 is rotationally clamped with a driving rod 62; the middle of the driving rod 62 is rotatably clamped at the outer end part of the clamping rod 61; the two sides of the driving rod 62 are respectively provided with an external thread; the driving rod 62 is respectively connected with a driving internal thread cylinder 63 through external threads on two sides; the driving internal thread cylinder 63 is in threaded rotary connection with the external thread of the driving rod 62; the outer ends of the driving internal thread cylinders 63 are rotatably clamped on the inner side surfaces of the sliding rods 33 respectively. The limiting mechanism 7 comprises a limiting plate 71, a rotating gear 73, a limiting toothed plate 72 and a limiting frame 74; the limiting frame 74 is a rectangular frame structure with an opening 741 in the middle of the upper end; a limit plate 71 is arranged at the side part of one sliding rod 33, and a limit toothed plate 72 is arranged at the side part of the other sliding rod 33; the middle of the end part of the limit plate 71 is provided with an installation port 711; two sides of the upper end of the limiting frame 74 are rotatably clamped at two sides of the mounting port 711 of the limiting plate 71 respectively; the rotating gear 73 is arranged at an installation port 711 in the middle of the end part of the limit plate 71; two sides of the rotating gear 73 are respectively and fixedly connected with two sides of an opening 741 at the upper end of the limiting frame 74; the limit toothed plate 72 is connected to the upper side of the rotating gear 73 through gear engagement; the limit toothed plate 72 drives the rotating gear 73 to rotate; the rotating gear 73 drives the limit frame 74 to rotate and abut against the lower side of the limit plate 71 or the lower side of the limit toothed plate 72.
As shown in fig. 1 to 8, further, the pressing mechanism 3 further includes a guide rod 37; a plurality of guide rods 37 are uniformly distributed on the periphery of the inner walls of the two ends of the sealing cavity 51; each guide rod 37 is sleeved with a transverse driving block 35 in a sliding manner. Further, a guide groove is arranged on the transverse driving block 35; the cross sections of the guide rod 37 and the guide groove are both rectangular structures. Further, a conical driving ring surface is arranged on the other end surface of the linkage ring 34; the side part of the transverse driving block 35 is provided with a driven inclined surface; the driven inclined surface of the transverse driving block 35 is jointed and connected on the conical driving ring surface of the linkage ring 34 in a pressing way. Further, the sliding rod 33 is provided with a sliding clamping tooth 331; a sliding clamping groove 52 is formed in the gland 5; the sliding rod 33 is slidably engaged with the sliding engagement groove 52 of the cover 5 via the sliding engagement tooth 331. Further, the sealing ring 4 is made of high-elasticity rubber material. Furthermore, a plurality of connecting threaded holes are uniformly formed in the periphery of one side of the connecting plate 2; a plurality of through connecting grooves are uniformly formed in the periphery of one side of the gland 5; a connecting screw 21 is respectively connected in the penetrating groove of the gland 5 in a penetrating way; one end of the connecting screw 21 passes through the penetrating groove of the gland and then is in threaded connection with the connecting threaded hole of the connecting plate. A pressing elastic body 64 is arranged in the driving internal thread cylinder 63; the pressing elastic body 64 is elastically compressed and pressed against the end of the driving rod 62.
The utility model discloses stop gear 7 has been add, in the relative inboard department of two extrusion mechanism 3's slide bar 33, a side-mounting limiting plate 71, opposite side installation limiting toothed plate 72, when slide bar 33 carries out horizontal migration, can drive limiting toothed plate 72 and the mutual interlock motion of rotating gear 73, limiting toothed plate 72 can drive rotating gear 73 and rotate, rotating gear 73 drives spacing frame 74 and rotates the butt in limiting plate 71 downside or limiting toothed plate 72's downside, and no matter how the level rotates, when limiting frame 74 rotates the butt in limiting plate 71 downside or limiting toothed plate 72's downside, the extreme position of regulation has been reached promptly, so can prevent that linkage ring 34 and transverse driving piece 35 from taking place to dislocate.
The utility model is additionally provided with the synchronous mechanism 6, and the driving rod 62 can rotate in situ at the upper end of the clamping rod 61, so that the driving rod 62 synchronously drives the driving internal thread cylinder 63 to rotate and move horizontally by utilizing the external threads at the two sides, and thus the driving internal thread cylinder 63 can drive the sliding rod 33 to move horizontally, and the effect of synchronous driving is achieved; the utility model drives the internal thread cylinder 63 to press the sliding rod 33 to slide, when the sliding rod 33 moves horizontally towards the direction of the sealing ring 4, the axial driving ring 32 and the link ring 34 can be driven to synchronously and horizontally move, the axial elastic ring 31 is driven to compress and extrude the inner end ring surface of the sealing ring 4 when the axial driving ring 32 moves horizontally, so that the sealing ring 4 is more tightly jointed with the connecting plate 2 and the gland 5 in the axial direction, meanwhile, the linkage ring 34 can drive a plurality of transverse driving blocks 35 to move towards the outer side surface of the sealing ring 4 when synchronously moving horizontally, the transverse driving blocks 35 drive the transverse elastic bodies 36 to compress when moving, and make the lateral elastic body 36 extrude the lateral surface of the seal ring 4, make the seal ring 4 and the laminating between the stern axle 1 tighter like this, so synchronous drive has increased the leakproofness of the inside anchor ring and the outer end anchor ring of seal ring 4.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A rotary limiting type stern shaft sealing device is characterized by comprising a stern shaft, a connecting plate, a gland, an extrusion mechanism, a sealing ring, a synchronizing mechanism and a limiting mechanism; a gland is arranged on one side of the connecting plate; the gland is in a U-shaped ring structure; the connecting plate and the gland enclose a sealing cavity; the screw shaft is connected to a sealing cavity defined by the connecting plate and the gland in a penetrating manner; two ends of the sealing cavity are respectively provided with an extrusion mechanism; two ends of the stern shaft are respectively sleeved with a sealing ring; a sealing ring is attached to one end of the stern shaft and positioned on the inner side ring surface of the connecting plate; the other end of the stern shaft is attached and installed with another sealing ring on the inner side ring surface of the cover plate; the sealing rings at two ends of the stern shaft are respectively driven by an extrusion mechanism; the extrusion mechanism comprises a sliding rod, an axial driving ring, an axial elastic ring, a linkage ring, a transverse driving block and a transverse elastic body; the end faces of the inner sides of the sealing rings are respectively abutted against one end face of one axial elastic ring; the other end surfaces of the axial elastic rings are respectively fixedly connected with an axial driving ring; the upper side and the lower side of the axial driving ring are respectively provided with a sliding rod; the same outer side of the sliding rods at two sides of the axial driving ring is provided with a linkage ring; the upper side and the lower side of one end of the linkage ring are fixed on the sliding rod, and the other end surface of the linkage ring is respectively abutted against a plurality of uniformly distributed transverse driving blocks; the inner sides of the transverse driving blocks are respectively fixedly connected with a transverse elastic body; one end of the transverse elastic body is fixed on the inner side of the transverse driving block, and the other end of the transverse elastic body is pressed against the outer ring surface of the sealing ring; when the linkage ring moves axially, the transverse driving block is driven to move along the radial direction of the sealing ring; the sliding rod is connected to the pressure cover in a sliding and clamping manner; the outer end of the sliding rod extends to the outer side of the gland; the synchronous mechanism comprises a driving rod, a clamping rod and a driving internal thread cylinder; the clamping rod is vertically arranged on the outer side surface of the gland; the outer end of the clamping rod is rotationally clamped with a driving rod; the middle of the driving rod is rotatably clamped at the outer end part of the clamping rod; external threads are respectively arranged on two sides of the driving rod; the driving rod is respectively connected with a driving internal thread cylinder through external threads on two sides; the driving internal thread cylinder is in threaded rotary connection with the external thread of the driving rod; the outer ends of the driving internal thread cylinders are respectively and rotationally clamped on the inner side surface of the sliding rod; the limiting mechanism comprises a limiting plate, a rotating gear, a limiting toothed plate and a limiting frame; the limiting frame is of a rectangular frame structure with an opening in the middle of the upper end; a limit plate is arranged on the side part of one sliding rod, and a limit toothed plate is arranged on the side part of the other sliding rod; the middle of the end part of the limiting plate is provided with a mounting port; two sides of the upper end of the limiting frame are rotatably clamped on two sides of the mounting opening of the limiting plate respectively; the rotating gear is arranged at the mounting opening in the middle of the end part of the limiting plate; two sides of the rotating gear are respectively and fixedly connected with two sides of an opening at the upper end of the limiting frame; the limiting toothed plate is connected to the upper side of the rotating gear through meshing of the gear; the limiting toothed plate drives the rotating gear to rotate; the rotating gear drives the limiting frame to rotate and abut against the lower side of the limiting plate or the lower side of the limiting toothed plate.
2. The rotation-limiting stern shaft seal according to claim 1 wherein the extrusion mechanism further comprises a guide rod; a plurality of guide rods are uniformly distributed on the periphery of the inner walls of the two ends of the sealing cavity; and a transverse driving block is sleeved on each guide rod in a sliding manner.
3. The rotation-limiting stern shaft sealing device according to claim 2 wherein the transverse driving block is provided with a guide groove; the cross sections of the guide rod and the guide groove are both rectangular structures.
4. The rotation-limiting stern shaft seal according to claim 1 wherein a conical driving ring surface is provided on the other end surface of the link ring; the side part of the transverse driving block is provided with a driven inclined plane; the driven inclined plane of the transverse driving block is jointed and connected on the conical driving ring surface of the linkage ring in a pressing mode.
5. The rotation-limiting stern shaft seal according to claim 1 wherein the sliding rod is provided with sliding engagement teeth; the gland is provided with a sliding clamping groove; the sliding rod is in sliding clamping connection with the sliding clamping groove on the gland through the sliding clamping tooth.
6. The rotation-limiting stern shaft seal according to claim 1 wherein the seal ring is made of a high-elasticity rubber material.
7. The rotation-limiting stern shaft sealing device according to claim 1, wherein a plurality of connection threaded holes are uniformly formed around one side of the connecting plate; a plurality of through connecting grooves are uniformly formed in the periphery of one side of the gland; a connecting screw is respectively connected in the penetrating groove of the gland in a penetrating way; one end of the connecting screw penetrates through the penetrating groove of the gland and then is in threaded connection with the connecting threaded hole of the connecting plate.
8. The rotation-limiting stern shaft seal according to claim 1 wherein a pressing elastomer is disposed in the driving internal thread cylinder; the pressing elastic body is elastically compressed and pressed on the end part of the driving rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921832146.7U CN211145347U (en) | 2019-10-29 | 2019-10-29 | Rotary limiting type stern shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921832146.7U CN211145347U (en) | 2019-10-29 | 2019-10-29 | Rotary limiting type stern shaft sealing device |
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| CN211145347U true CN211145347U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921832146.7U Active CN211145347U (en) | 2019-10-29 | 2019-10-29 | Rotary limiting type stern shaft sealing device |
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| CN (1) | CN211145347U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412386A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Sliding regulation type oil casing plugging sealer |
| CN112412350A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Support and press disconnect-type oil production pipe anticreep device |
| CN115448441A (en) * | 2022-09-23 | 2022-12-09 | 南京工大环境科技有限公司 | A high-efficient catalytic oxidation equipment for high enriched brine is handled |
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2019
- 2019-10-29 CN CN201921832146.7U patent/CN211145347U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412386A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Sliding regulation type oil casing plugging sealer |
| CN112412350A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Support and press disconnect-type oil production pipe anticreep device |
| CN112412386B (en) * | 2020-11-29 | 2023-02-24 | 江苏力克石油机械有限公司 | Sliding regulation type oil casing plugging sealer |
| CN115448441A (en) * | 2022-09-23 | 2022-12-09 | 南京工大环境科技有限公司 | A high-efficient catalytic oxidation equipment for high enriched brine is handled |
| CN115448441B (en) * | 2022-09-23 | 2023-09-01 | 南京工大环境科技有限公司 | High-efficiency catalytic oxidation equipment for high-concentration brine treatment |
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