CN210829202U - Two-way slips of two packing element fills instrument - Google Patents
Two-way slips of two packing element fills instrument Download PDFInfo
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- CN210829202U CN210829202U CN201921883843.5U CN201921883843U CN210829202U CN 210829202 U CN210829202 U CN 210829202U CN 201921883843 U CN201921883843 U CN 201921883843U CN 210829202 U CN210829202 U CN 210829202U
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Abstract
The utility model discloses a two-way slips of two packing elements fills instrument, fill instrument front end and be provided with central sleeve pipe, central sleeve pipe front end installs the bell and spigot joint, and the bell and spigot joint rear end is installed cyclic annular top connection, and the inside of top connection front portion is opened has interior gag, and interior gag rear end is provided with the hollow ring; an upper outer slip is sleeved on the outer side of the hollow ring, a pressing seat is further sleeved on a center sleeve on the inner side of the upper outer slip, an upper inner slip is clamped on the inner side of the rear end of the upper outer slip, and an annular positioning key is installed on the outer side of the upper inner slip; go up interior slips inboard and be provided with outer packing element, outer packing element inboard is installed interior packing element, and outer packing element outside upper portion is located the interior slips inboard and is provided with the meshing tooth, goes up interior slips rear end outside joint and has outer slips down, and the inboard joint in outer slips rear end has interior slips down, and this utility model structure is rational in infrastructure, and convenient to use and sealed effectual, anti erosion-resistant ability is strong.
Description
Technical Field
The utility model belongs to oil development equipment field, concretely relates to two-way slips of two packing elements fill instrument.
Background
The oil extraction is an important source of crude oil supply in China, is widely extracted all the time, sand in an oil layer is easy to be pumped out during oil well extraction, crude oil with the sand is not easy to separate and use, and a certain abrasion can be caused to an oil conveying pipe. In the field of oil well sand control, there are two types of chemical sand control and mechanical sand control, wherein the mechanical sand control is that a sand control filling tool is placed in a well, then a specially-made sand grain is filled in the well, and the specially-made sand is used for preventing external sand from entering the well. However, the existing filling tool is often poor in sealing, unreasonable in structure, low in filling success rate, multiple in operation procedures and high in cost, sand prevention failure can be caused by slight improper use, the existing filling tool is easy to leave in a well, the next operation is difficult, and the overhaul of the oil well is caused. And the prior sand control tool has complex structure, heavy tool, inconvenient carrying and small filling channel, and can not realize large-displacement sand washing.
SUMMERY OF THE UTILITY MODEL
The utility model provides a two-way slips of two packing elements fills instrument, the shortcoming of prior art can be solved in the use of this equipment, provides one kind and fills swiftly, and the expense is low and the instrument that fills that the success rate is high.
In order to achieve the above object, the utility model provides a following technical scheme: a double-rubber-cylinder bidirectional slip filling tool is characterized in that a central sleeve is arranged at the front end of the filling tool, a sleeve joint is mounted at the front end of the central sleeve, an annular upper joint is mounted at the rear end of the sleeve joint, an inner plug port is formed in the inner side of the front portion of the upper joint, and a hollow ring is arranged at the rear end of the inner plug port; an upper outer slip is sleeved on the outer side of the hollow ring, a pressing seat is further sleeved on a center sleeve on the inner side of the upper outer slip, an upper inner slip is clamped on the inner side of the rear end of the upper outer slip, and an annular positioning key is installed on the outer side of the upper inner slip; an outer rubber cylinder is arranged on the inner side of the upper inner slip, an inner rubber cylinder is arranged on the inner side of the outer rubber cylinder, meshing teeth are arranged on the upper portion of the outer side of the outer rubber cylinder, which is positioned on the inner side of the upper inner slip, a lower outer slip is clamped on the outer side of the rear end of the upper inner slip, and a lower inner slip is clamped on the inner side of the rear end of the lower outer slip; a limiting seat is arranged on an outer rubber cylinder at the front part of the lower inner slip, a first spring is arranged at the front end of the inner side of the inner rubber cylinder, and the inner rubber cylinder and the outer rubber cylinder are mutually fixed through an annular groove at the inner side of the outer rubber cylinder and a sealing ring arranged on the inner side of the outer rubber cylinder; the inside of the lower inner slip is fixed with the outer rubber sleeve through a backing ring, a second spring is installed on the inner side of the lower portion of the inner rubber sleeve, a caching connecting band is arranged on the inner rubber sleeve between the first spring and the second spring, a convex ring is arranged on the outer side of the lower portion of the outer rubber sleeve, a lower joint is installed on the outer rubber sleeve on the lower portion of the convex ring, and an inner rubber sleeve extends out of the outer rubber sleeve and is provided with an inner rubber sleeve outlet.
Preferably, an annular outer lug is arranged on the inner side of the outer rubber cylinder.
Preferably, the inner ejector block is installed on the outer side of the inner rubber cylinder, and the outer protruding block and the inner ejector block are correspondingly and mutually clamped.
Preferably, a sealing seat is arranged between the upper part of the inner rubber cylinder and the pressing seat.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model has reasonable structure, convenient use, reduced operation procedures, improved reliability, low cost and high use efficiency;
2. the filling tool has strong pressure resistance and durability, good sealing effect and strong erosion resistance, and is suitable for long-time construction operation;
3. the utility model discloses fill the instrument and shorten the activity duration, save the working cost, improve the economic benefits of oil well.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is an overall view of the filling tool of the present invention;
in the figure: 1. the sleeve joint, 2, interior bayonet socket, 3, top connection, 4, hollow ring, 5, central sleeve pipe, 6, go up outer slips, 7, press the seat, 8, go up interior slips, 9, navigation key, 10, interior packing element, 11, meshing tooth, 12, outer slips down, 13, outer packing element, 14, interior slips down, 15, spacing seat, 16, first spring, 17, annular groove, 18, sealing ring, 19, backing ring, 20, buffer connecting band, 21, second spring, 22, evagination piece, 23, interior kicking block, 24, bulge loop, 25, lower clutch, 26, interior packing element export, 27, seal receptacle.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Referring to fig. 1, the present invention provides a technical solution: a double-rubber-cylinder bidirectional slip filling tool is characterized in that a central sleeve 5 is arranged at the front end of the filling tool, a sleeve joint 1 is arranged at the front end of the central sleeve, an annular upper joint 3 is arranged at the rear end of the sleeve joint, an inner plug port 2 is formed in the inner side of the front part of the upper joint, and a hollow ring 4 is arranged at the rear end of the inner plug port; an upper outer slip 6 is sleeved on the outer side of the hollow ring, a pressing seat 7 is further sleeved on a center sleeve on the inner side of the upper outer slip, an upper inner slip 8 is clamped on the inner side of the rear end of the upper outer slip, and an annular positioning key 9 is installed on the outer side of the upper inner slip; an outer rubber cylinder 13 is arranged on the inner side of the upper inner slip, an inner rubber cylinder 10 is arranged on the inner side of the outer rubber cylinder, meshing teeth 11 are arranged on the upper portion of the outer side of the outer rubber cylinder, which is positioned on the inner side of the upper inner slip, a lower outer slip 12 is clamped on the outer side of the rear end of the upper inner slip, and a lower inner slip 14 is clamped on the inner side of the rear end of the lower outer slip; a limiting seat 15 is arranged on an outer rubber cylinder at the front part of the lower inner slip, a first spring 16 is arranged at the front end of the inner side of the inner rubber cylinder 10, and the inner rubber cylinder and the outer rubber cylinder are mutually fixed through an annular groove 17 at the inner side of the outer rubber cylinder 13 and a sealing ring 18 arranged on the inner rubber cylinder; the inner side of the lower inner slip is fixed with an outer rubber cylinder through a backing ring 19, a second spring 21 is installed on the inner side of the lower portion of the inner rubber cylinder, a cache connecting band 20 is arranged on the inner rubber cylinder between the first spring and the second spring, a convex ring 24 is arranged on the outer side of the lower portion of the outer rubber cylinder, a lower joint 25 is installed on the outer rubber cylinder on the lower portion of the convex ring, and an inner rubber cylinder extends out of the outer rubber cylinder and is provided with an inner rubber cylinder outlet 26. An annular outer convex block 22 is arranged on the inner side of the outer rubber cylinder 13. An inner top block 23 is arranged on the outer side of the inner rubber cylinder 10, and the outer convex block 22 and the inner top block 23 are correspondingly arranged and clamped with each other. A sealing seat 27 is arranged between the upper part of the inner rubber cylinder 10 and the press seat 7.
Example 1:
a double-rubber-cylinder bidirectional slip filling tool is characterized in that a central sleeve 5 is arranged at the front end of the filling tool, a sleeve joint 1 is arranged at the front end of the central sleeve, an annular upper joint 3 is arranged at the rear end of the sleeve joint, an inner plug port 2 is formed in the inner side of the front part of the upper joint, and a hollow ring 4 is arranged at the rear end of the inner plug port; an upper outer slip 6 is sleeved on the outer side of the hollow ring, a pressing seat 7 is further sleeved on a center sleeve on the inner side of the upper outer slip, an upper inner slip 8 is clamped on the inner side of the rear end of the upper outer slip, and an annular positioning key 9 is installed on the outer side of the upper inner slip; an outer rubber cylinder 13 is arranged on the inner side of the upper inner slip, an inner rubber cylinder 10 is arranged on the inner side of the outer rubber cylinder, meshing teeth 11 are arranged on the upper portion of the outer side of the outer rubber cylinder, which is positioned on the inner side of the upper inner slip, a lower outer slip 12 is clamped on the outer side of the rear end of the upper inner slip, and a lower inner slip 14 is clamped on the inner side of the rear end of the lower outer slip; a limiting seat 15 is arranged on an outer rubber cylinder at the front part of the lower inner slip, a first spring 16 is arranged at the front end of the inner side of the inner rubber cylinder 10, and the inner rubber cylinder and the outer rubber cylinder are mutually fixed through an annular groove 17 at the inner side of the outer rubber cylinder 13 and a sealing ring 18 arranged on the inner rubber cylinder; the inner side of the lower inner slip is fixed with an outer rubber cylinder through a backing ring 19, a second spring 21 is installed on the inner side of the lower portion of the inner rubber cylinder, a cache connecting band 20 is arranged on the inner rubber cylinder between the first spring and the second spring, a convex ring 24 is arranged on the outer side of the lower portion of the outer rubber cylinder, a lower joint 25 is installed on the outer rubber cylinder on the lower portion of the convex ring, and an inner rubber cylinder extends out of the outer rubber cylinder and is provided with an inner rubber cylinder outlet 26.
Example 2:
a double-rubber-cylinder bidirectional slip filling tool is characterized in that a central sleeve 5 is arranged at the front end of the filling tool, a sleeve joint 1 is arranged at the front end of the central sleeve, an annular upper joint 3 is arranged at the rear end of the sleeve joint, an inner plug port 2 is formed in the inner side of the front part of the upper joint, and a hollow ring 4 is arranged at the rear end of the inner plug port; an upper outer slip 6 is sleeved on the outer side of the hollow ring, a pressing seat 7 is further sleeved on a center sleeve on the inner side of the upper outer slip, an upper inner slip 8 is clamped on the inner side of the rear end of the upper outer slip, and an annular positioning key 9 is installed on the outer side of the upper inner slip; an outer rubber cylinder 13 is arranged on the inner side of the upper inner slip, an inner rubber cylinder 10 is arranged on the inner side of the outer rubber cylinder, meshing teeth 11 are arranged on the upper portion of the outer side of the outer rubber cylinder, which is positioned on the inner side of the upper inner slip, a lower outer slip 12 is clamped on the outer side of the rear end of the upper inner slip, and a lower inner slip 14 is clamped on the inner side of the rear end of the lower outer slip; a limiting seat 15 is arranged on an outer rubber cylinder at the front part of the lower inner slip, a first spring 16 is arranged at the front end of the inner side of the inner rubber cylinder 10, and the inner rubber cylinder and the outer rubber cylinder are mutually fixed through an annular groove 17 at the inner side of the outer rubber cylinder 13 and a sealing ring 18 arranged on the inner rubber cylinder; the inner side of the lower inner slip is fixed with an outer rubber cylinder through a backing ring 19, a second spring 21 is installed on the inner side of the lower portion of the inner rubber cylinder, a cache connecting band 20 is arranged on the inner rubber cylinder between the first spring and the second spring, a convex ring 24 is arranged on the outer side of the lower portion of the outer rubber cylinder, a lower joint 25 is installed on the outer rubber cylinder on the lower portion of the convex ring, and an inner rubber cylinder extends out of the outer rubber cylinder and is provided with an inner rubber cylinder outlet 26. An annular outer convex block 22 is arranged on the inner side of the outer rubber cylinder 13.
Example 3:
a double-rubber-cylinder bidirectional slip filling tool is characterized in that a central sleeve 5 is arranged at the front end of the filling tool, a sleeve joint 1 is arranged at the front end of the central sleeve, an annular upper joint 3 is arranged at the rear end of the sleeve joint, an inner plug port 2 is formed in the inner side of the front part of the upper joint, and a hollow ring 4 is arranged at the rear end of the inner plug port; an upper outer slip 6 is sleeved on the outer side of the hollow ring, a pressing seat 7 is further sleeved on a center sleeve on the inner side of the upper outer slip, an upper inner slip 8 is clamped on the inner side of the rear end of the upper outer slip, and an annular positioning key 9 is installed on the outer side of the upper inner slip; an outer rubber cylinder 13 is arranged on the inner side of the upper inner slip, an inner rubber cylinder 10 is arranged on the inner side of the outer rubber cylinder, meshing teeth 11 are arranged on the upper portion of the outer side of the outer rubber cylinder, which is positioned on the inner side of the upper inner slip, a lower outer slip 12 is clamped on the outer side of the rear end of the upper inner slip, and a lower inner slip 14 is clamped on the inner side of the rear end of the lower outer slip; a limiting seat 15 is arranged on an outer rubber cylinder at the front part of the lower inner slip, a first spring 16 is arranged at the front end of the inner side of the inner rubber cylinder 10, and the inner rubber cylinder and the outer rubber cylinder are mutually fixed through an annular groove 17 at the inner side of the outer rubber cylinder 13 and a sealing ring 18 arranged on the inner rubber cylinder; the inner side of the lower inner slip is fixed with an outer rubber cylinder through a backing ring 19, a second spring 21 is installed on the inner side of the lower portion of the inner rubber cylinder, a cache connecting band 20 is arranged on the inner rubber cylinder between the first spring and the second spring, a convex ring 24 is arranged on the outer side of the lower portion of the outer rubber cylinder, a lower joint 25 is installed on the outer rubber cylinder on the lower portion of the convex ring, and an inner rubber cylinder extends out of the outer rubber cylinder and is provided with an inner rubber cylinder outlet 26. An inner top block 23 is arranged on the outer side of the inner rubber cylinder 10, and the outer convex block 22 and the inner top block 23 are correspondingly arranged and clamped with each other.
Example 4:
a double-rubber-cylinder bidirectional slip filling tool is characterized in that a central sleeve 5 is arranged at the front end of the filling tool, a sleeve joint 1 is arranged at the front end of the central sleeve, an annular upper joint 3 is arranged at the rear end of the sleeve joint, an inner plug port 2 is formed in the inner side of the front part of the upper joint, and a hollow ring 4 is arranged at the rear end of the inner plug port; an upper outer slip 6 is sleeved on the outer side of the hollow ring, a pressing seat 7 is further sleeved on a center sleeve on the inner side of the upper outer slip, an upper inner slip 8 is clamped on the inner side of the rear end of the upper outer slip, and an annular positioning key 9 is installed on the outer side of the upper inner slip; an outer rubber cylinder 13 is arranged on the inner side of the upper inner slip, an inner rubber cylinder 10 is arranged on the inner side of the outer rubber cylinder, meshing teeth 11 are arranged on the upper portion of the outer side of the outer rubber cylinder, which is positioned on the inner side of the upper inner slip, a lower outer slip 12 is clamped on the outer side of the rear end of the upper inner slip, and a lower inner slip 14 is clamped on the inner side of the rear end of the lower outer slip; a limiting seat 15 is arranged on an outer rubber cylinder at the front part of the lower inner slip, a first spring 16 is arranged at the front end of the inner side of the inner rubber cylinder 10, and the inner rubber cylinder and the outer rubber cylinder are mutually fixed through an annular groove 17 at the inner side of the outer rubber cylinder 13 and a sealing ring 18 arranged on the inner rubber cylinder; the inner side of the lower inner slip is fixed with an outer rubber cylinder through a backing ring 19, a second spring 21 is installed on the inner side of the lower portion of the inner rubber cylinder, a cache connecting band 20 is arranged on the inner rubber cylinder between the first spring and the second spring, a convex ring 24 is arranged on the outer side of the lower portion of the outer rubber cylinder, a lower joint 25 is installed on the outer rubber cylinder on the lower portion of the convex ring, and an inner rubber cylinder extends out of the outer rubber cylinder and is provided with an inner rubber cylinder outlet 26. A sealing seat 27 is arranged between the upper part of the inner rubber cylinder 10 and the press seat 7.
Example 5:
a double-rubber-cylinder bidirectional slip filling tool is characterized in that a central sleeve 5 is arranged at the front end of the filling tool, a sleeve joint 1 is arranged at the front end of the central sleeve, an annular upper joint 3 is arranged at the rear end of the sleeve joint, an inner plug port 2 is formed in the inner side of the front part of the upper joint, and a hollow ring 4 is arranged at the rear end of the inner plug port; an upper outer slip 6 is sleeved on the outer side of the hollow ring, a pressing seat 7 is further sleeved on a center sleeve on the inner side of the upper outer slip, an upper inner slip 8 is clamped on the inner side of the rear end of the upper outer slip, and an annular positioning key 9 is installed on the outer side of the upper inner slip; an outer rubber cylinder 13 is arranged on the inner side of the upper inner slip, an inner rubber cylinder 10 is arranged on the inner side of the outer rubber cylinder, meshing teeth 11 are arranged on the upper portion of the outer side of the outer rubber cylinder, which is positioned on the inner side of the upper inner slip, a lower outer slip 12 is clamped on the outer side of the rear end of the upper inner slip, and a lower inner slip 14 is clamped on the inner side of the rear end of the lower outer slip; a limiting seat 15 is arranged on an outer rubber cylinder at the front part of the lower inner slip, a first spring 16 is arranged at the front end of the inner side of the inner rubber cylinder 10, and the inner rubber cylinder and the outer rubber cylinder are mutually fixed through an annular groove 17 at the inner side of the outer rubber cylinder 13 and a sealing ring 18 arranged on the inner rubber cylinder; the inner side of the lower inner slip is fixed with an outer rubber cylinder through a backing ring 19, a second spring 21 is installed on the inner side of the lower portion of the inner rubber cylinder, a cache connecting band 20 is arranged on the inner rubber cylinder between the first spring and the second spring, a convex ring 24 is arranged on the outer side of the lower portion of the outer rubber cylinder, a lower joint 25 is installed on the outer rubber cylinder on the lower portion of the convex ring, and an inner rubber cylinder extends out of the outer rubber cylinder and is provided with an inner rubber cylinder outlet 26. An inner top block 23 is arranged on the outer side of the inner rubber cylinder 10, and the outer convex block 22 and the inner top block 23 are correspondingly arranged and clamped with each other. A sealing seat 27 is arranged between the upper part of the inner rubber cylinder 10 and the press seat 7.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a two-way slips of two rubber cylinders fills instrument which characterized in that: the front end of the filling tool is provided with a central sleeve (5), the front end of the central sleeve is provided with a sleeve joint (1), the rear end of the sleeve joint is provided with an annular upper joint (3), the inner side of the front part of the upper joint is provided with an inner plug port (2), and the rear end of the inner plug port is provided with a hollow ring (4); an upper outer slip (6) is sleeved on the outer side of the hollow ring, a pressing seat (7) is further sleeved on a center sleeve on the inner side of the upper outer slip, an upper inner slip (8) is clamped on the inner side of the rear end of the upper outer slip, and an annular positioning key (9) is installed on the outer side of the upper inner slip; an outer rubber cylinder (13) is arranged on the inner side of the upper inner slip, an inner rubber cylinder (10) is arranged on the inner side of the outer rubber cylinder, meshing teeth (11) are arranged on the upper portion of the outer side of the outer rubber cylinder and positioned on the inner side of the upper inner slip, a lower outer slip (12) is clamped on the outer side of the rear end of the upper inner slip, and a lower inner slip (14) is clamped on the inner side of the rear end of the lower outer slip; a limiting seat (15) is mounted on an outer rubber cylinder at the front part of the lower inner slip, a first spring (16) is arranged at the front end of the inner side of the inner rubber cylinder (10), and the inner rubber cylinder and the outer rubber cylinder are mutually fixed through an annular groove (17) on the inner side of the outer rubber cylinder (13) and a sealing ring (18) arranged on the inner rubber cylinder; the inner side of the lower inner slip is fixed with the outer rubber cylinder through a backing ring (19), a second spring (21) is installed on the inner side of the lower portion of the inner rubber cylinder, a cache connecting band (20) is arranged on the inner rubber cylinder between the first spring and the second spring, a convex ring (24) is arranged on the outer side of the lower portion of the outer rubber cylinder, a lower connector (25) is installed on the outer rubber cylinder on the lower portion of the convex ring, and an inner rubber cylinder extends out of the outer rubber cylinder and is provided with an inner rubber cylinder outlet (26).
2. The bi-directional slip-filling tool of claim 1, wherein: and an annular outer convex block (22) is arranged on the inner side of the outer rubber cylinder (13).
3. The bi-directional slip-filling tool with two rubber cylinders as claimed in claim 2, wherein: interior kicking block (23) are installed in interior packing element (10) outside, outer lug (22) and interior kicking block (23) correspond and set up mutual joint.
4. A dual-drum bi-directional slip-filling tool according to claim 1 or 3, wherein: a sealing seat (27) is arranged between the upper part of the inner rubber cylinder (10) and the pressing seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921883843.5U CN210829202U (en) | 2019-11-04 | 2019-11-04 | Two-way slips of two packing element fills instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921883843.5U CN210829202U (en) | 2019-11-04 | 2019-11-04 | Two-way slips of two packing element fills instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210829202U true CN210829202U (en) | 2020-06-23 |
Family
ID=71252678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921883843.5U Active CN210829202U (en) | 2019-11-04 | 2019-11-04 | Two-way slips of two packing element fills instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210829202U (en) |
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2019
- 2019-11-04 CN CN201921883843.5U patent/CN210829202U/en active Active
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