CN218221173U - Chromatography column assembly - Google Patents
Chromatography column assembly Download PDFInfo
- Publication number
- CN218221173U CN218221173U CN202222184796.3U CN202222184796U CN218221173U CN 218221173 U CN218221173 U CN 218221173U CN 202222184796 U CN202222184796 U CN 202222184796U CN 218221173 U CN218221173 U CN 218221173U
- Authority
- CN
- China
- Prior art keywords
- elastic ring
- chromatography column
- adapter sleeve
- chromatographic column
- connecting sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a chromatographic column subassembly, including the adapter sleeve, the both sides of adapter sleeve are equipped with the chromatography post respectively, and run through the formula in the adapter sleeve has seted up the butt joint hole, and the chromatography column subassembly is still including locating the coupling mechanism between adapter sleeve and the chromatography post, and coupling mechanism includes the detachable fastener of locating the adapter sleeve, and locates the elastic ring between fastener and the chromatography post, and the outer wall of chromatography post is located to the elastic ring cover, and the fastener is used for extrudeing the elastic ring to make the elastic ring support and lean on the chromatography post. The utility model provides a chromatographic column subassembly, through setting up adapter sleeve and coupling mechanism, this adapter sleeve can realize docking the chromatographic column that two pipe diameters are the same through coupling mechanism to form a container that can once load the solvent of capacity and pack, follow-up only need carry out once to deposit, reduced the loss and the time of loading many times, make follow-up can once only form the filler filling of capacity, thereby improve filling efficiency, reduce the filling cost.
Description
Technical Field
The utility model relates to a chromatographic separation technical field, in particular to chromatographic column subassembly.
Background
The classical chromatographic column packing method includes dry column packing and wet column packing. The dry column packing method saves the solvent, the loss of the solvent is less in the column packing process, but the pressure reduction method can cause partial loss of the solvent, and the requirements of pressure reduction on the cost and the vacuum tolerance capacity of the column are higher; the method for directly removing the bubbles in the dry column by washing with the column packing solvent in the reverse reaction is not good in effect, the bubbles in the filler cannot be removed comprehensively, the column packing effect is not ideal, and the column packing effect is not ideal easily.
The wet column packing needs to be additionally provided with a container for wetting seasoning filler, the operation of uniformly stirring the filler is relatively difficult when the operation is enlarged on a scale, the loss of a column packing solvent is easily caused, the same chromatographic column needs to be repeatedly packed, and the packing efficiency is lower.
SUMMERY OF THE UTILITY MODEL
To prior art not enough, the utility model aims to provide a chromatography column subassembly aims at solving the lower technical problem of filling efficiency among the prior art.
In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a chromatographic column subassembly, includes the adapter sleeve, the both sides of adapter sleeve are equipped with the chromatography column respectively, run through in the adapter sleeve set up with the chromatography column corresponds the butt joint hole that sets up, the chromatography column subassembly is still including locating the adapter sleeve with coupling mechanism between the chromatography column, coupling mechanism includes detachable locating the fastener of adapter sleeve, and locate the fastener with elastic ring between the chromatography column, the elastic ring snare is located the outer wall of chromatography column, the fastener is used for the extrusion elastic ring, so that elastic ring supports and leans on the chromatography column.
Compared with the prior art, the beneficial effects of the utility model reside in that: through setting up the adapter sleeve, the butt joint hole that sets up with the chromatography column corresponds is seted up to the formula of running through in the adapter sleeve, chromatography column subassembly is still including locating the coupling mechanism between adapter sleeve and the chromatography column, coupling mechanism is located including the dismantlement formula the fastener of adapter sleeve, and locate the elastic ring between fastener and the chromatography column, the elastic ring snare is located the outer wall of chromatography column, this fastener is used for extrudeing the elastic ring, so that the elastic ring is close to the chromatography column, accomplish the fixed between chromatography column and the adapter sleeve, through adapter sleeve and coupling mechanism butt joint assembly two chromatography columns that the pipe diameter is the same, so as to form a container that can once fill sufficient solvent and filler, follow-up only need once deposit, the loss and the time of packing many times have been reduced, make follow-up can once only form the filler filling of sufficient, thereby improve filling efficiency, reduce the filling cost.
According to one aspect of the technical scheme, the two ends of the connecting sleeve are provided with internal threads, the fastening piece is a threaded pipe arranged corresponding to the internal threads, and the threaded pipe is internally provided with a through hole corresponding to the chromatographic column.
According to one aspect of the technical scheme, the connecting sleeve is internally provided with a groove which is arranged corresponding to the elastic ring, and when the threaded pipe extrudes the elastic ring, the inner side and the outer side of the elastic ring respectively abut against the outer wall of the chromatographic column and the inner wall of the groove.
According to one aspect of the above technical scheme, the number of the elastic rings is two, and a pressure pad is arranged between the two elastic rings.
According to one aspect of the technical scheme, the chromatographic column assembly further comprises an anti-rotation mechanism, the anti-rotation mechanism comprises a guide pressing block arranged between the elastic ring and the threaded pipe, the anti-rotation mechanism further comprises a limiting pin arranged on the connecting sleeve in a detachable mode, and a U-shaped groove corresponding to the limiting pin is formed in the guide pressing block.
According to one aspect of the above technical solution, the threaded pipe includes a threaded portion, and a flat portion formed by extending one end of the threaded portion.
According to the one hand of above-mentioned technical scheme, the chromatography column subassembly still includes dismouting mechanism, dismouting mechanism is located including the cover handle on the plane portion, the handle with pass through bolted connection between the screwed pipe.
According to one aspect of the technical scheme, the chromatography column assembly further comprises an anti-skid screw arranged on the connecting sleeve, and a thread groove corresponding to the anti-skid screw is formed in the middle of the connecting sleeve.
Drawings
FIG. 1 is a schematic diagram showing the structure of a chromatography column assembly according to a first embodiment of the present invention;
FIG. 2 is a schematic sectional view of a chromatography column assembly according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram showing the structure of a chromatography column assembly according to a second embodiment of the present invention;
FIG. 4 is a schematic sectional view of a chromatographic column assembly in a second embodiment of the present invention;
FIG. 5 is a schematic diagram showing the structure of a chromatography column assembly according to a third embodiment of the present invention;
FIG. 6 is a schematic structural view of a chromatography column according to a third embodiment of the present invention;
FIG. 7 is a schematic view showing the assembly of a chromatography column according to a third embodiment of the present invention;
FIG. 8 is a schematic view of the assembly of a chromatography column assembly according to a third embodiment of the present invention;
FIG. 9 is a schematic sectional view of a chromatography column assembly according to a third embodiment of the present invention;
description of the main element symbols:
| connecting |
10 | |
20 |
| |
11 | |
12 |
| |
13 | |
30 |
| |
31 | |
32 |
| |
33 | Threaded |
40 |
| |
41 | |
42 |
| |
43 | |
44 |
| |
51 | |
52 |
| |
61 | |
62 |
| |
63 | |
71 |
| |
72 |
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example one
Please refer to fig. 1 to 2, which show a chromatography column assembly in a first embodiment of the present invention, including a connecting sleeve 10, two sides of the connecting sleeve 10 are respectively provided with a chromatography column 20, a through hole corresponding to the chromatography column 20 is provided in the connecting sleeve 10, the chromatography column assembly further includes a connecting mechanism disposed between the connecting sleeve 10 and the chromatography column 20, the connecting mechanism includes a fastening member detachably disposed in the connecting sleeve, and an elastic ring 51 disposed between the fastening member and the chromatography column 20, the elastic ring 51 is sleeved on an outer wall of the chromatography column 20, and the fastening member is used for extruding the elastic ring 51, so that the elastic ring 51 is abutted against the chromatography column 20.
In this embodiment, the fastening member is a screw 71, and the connecting sleeve 10 is provided with a thread groove corresponding to the screw 71. Specifically, in some application scenarios of the present embodiment, first, the elastic ring 51 is sleeved at a preset position of the chromatography column 20, the chromatography column 20 and the elastic ring 51 are synchronously inserted into the docking hole of the docking sleeve 10, when the two chromatography columns 20 are docked in abutment, the elastic ring 51 is located at the thread groove, and at this time, the screw 71 is screwed into the thread groove to press the elastic ring, so as to complete the fixing of the chromatography column.
Example two
Please refer to fig. 3 to 4, which show a chromatography column assembly according to a second embodiment of the present invention, including a connecting sleeve 10, two sides of the connecting sleeve 10 are respectively provided with a chromatography column 20, a through hole corresponding to the chromatography column 20 is provided in the connecting sleeve 10, the chromatography column assembly further includes a connecting mechanism disposed between the connecting sleeve 10 and the chromatography column 20, the connecting mechanism includes a fastening member detachably disposed in the connecting sleeve, and an elastic ring 51 disposed between the fastening member and the chromatography column 20, the elastic ring 51 is sleeved on an outer wall of the chromatography column 20, and the fastening member is used for extruding the elastic ring 51, so that the elastic ring 51 is abutted against the chromatography column 20.
In this embodiment, the fastening member is a socket 72, and the socket 72 includes a wedge surface for contacting the elastic ring 51. Specifically, in some application scenarios of the present embodiment, first, the elastic ring 51 is sleeved on the chromatographic column 20 at a preset position, the chromatographic column 20 and the elastic ring 51 are synchronously inserted into the docking hole of the connecting sleeve 10, at this time, the relative positions of the chromatographic column 20 and the connecting sleeve 10 are kept unchanged, and by inserting the inserting sleeve 72, the elastic ring 51 is deformed by the pressing contact between the wedge-shaped surface and the elastic ring 51, and abuts against the chromatographic column 20, so as to complete the fixing of the chromatographic column 20.
EXAMPLE III
Please refer to fig. 5 to 9, which show a chromatography column assembly in three embodiments of the present invention, including a connecting sleeve 10, two sides of the connecting sleeve 10 are respectively provided with a chromatography column 20, a through hole corresponding to the chromatography column 20 is provided in the connecting sleeve 10, the chromatography column assembly further includes a connecting mechanism disposed between the connecting sleeve 10 and the chromatography column 20, the connecting mechanism includes a fastening member detachably disposed in the connecting sleeve, and an elastic ring 51 disposed between the fastening member and the chromatography column 20, the elastic ring 51 is sleeved on an outer wall of the chromatography column 20, and the fastening member is used for extruding the elastic ring 51, so that the elastic ring 51 is abutted against the chromatography column 20.
Specifically, in the present embodiment, by providing the connection sleeve 10, the connection sleeve 10 is provided with a through-type butt hole corresponding to the chromatography column 20, the chromatography column assembly further includes a connection mechanism disposed between the connection sleeve 10 and the chromatography column 20, the connection mechanism includes a fastening member detachably disposed on the connection sleeve 10, and an elastic ring 51 disposed between the fastening member and the chromatography column 20, the elastic ring 51 is sleeved on the outer wall of the chromatography column 20, the fastening member is used for extruding the elastic ring 51, so that the elastic ring 51 abuts against the chromatography column 20, thereby completing the fixation between the chromatography column 20 and the connection sleeve 10, and two chromatography columns 20 having the same pipe diameter are butt-assembled through the connection sleeve 10 and the connection mechanism, so as to form a container capable of filling sufficient amount of solvent and filler at one time, and only one-time precipitation is required subsequently, thereby reducing the loss and time of multiple-time filling, and enabling sufficient filler filling to be formed at one time subsequently, thereby improving the filling efficiency and reducing the filling cost.
Specifically, in this embodiment, the two ends of the connecting sleeve 10 are provided with internal threads 13, the fastening member is a threaded pipe 40 disposed corresponding to the internal threads 13, and a through hole corresponding to the chromatographic column 20 is formed in the threaded pipe 40. Specifically, the sealing cap assembly 30 is provided on one side of the chromatography column 20, and the sealing cap assembly 30 includes a cap 31, a sealing cap 33, and a tube cap 32 provided on one side of the chromatography column 20. Further, a groove 12 corresponding to the elastic ring 51 is formed in the connecting sleeve 10, and when the threaded pipe 40 presses the elastic ring 51, the inner side and the outer side of the elastic ring 51 respectively abut against the outer wall of the chromatographic column 20 and the inner wall of the groove 12. It can be understood that, in some application scenarios of this embodiment, when in particular use, by sleeving the elastic ring 51 on the chromatographic column 20, the connection sleeve 10 is provided with the groove 12 corresponding to the elastic ring 51, the outer side of the elastic ring 51 abuts against the inner wall of the groove 12, and by rotating the threaded pipe 40, the threaded pipe 40 gradually approaches and extrudes the elastic ring 51 under the effect of the internal thread 13, so that the elastic ring 51 fills the gap between the chromatographic column 20 and the connection sleeve 10, and the sealing performance of the chromatographic column assembly is ensured.
Preferably, in this embodiment, the number of the elastic rings 51 is two, and the sealing mechanism further includes a pressure pad 52 disposed between the two elastic rings 51.
Further, in this embodiment, the chromatography column assembly further includes an anti-rotation mechanism, the anti-rotation mechanism includes a guide pressing block 61 disposed between the elastic ring 51 and the threaded pipe 40, the anti-rotation mechanism further includes a limiting pin 63 detachably disposed on the connecting sleeve 10, and the guide pressing block 61 is provided with a U-shaped groove 62 corresponding to the limiting pin. Specifically, the above-mentioned limit pin 63 is disposed on the connecting sleeve 10 by a screw connection. It can be understood that, by arranging the guiding pressing block 61 between the elastic ring 51 and the threaded pipe 40 and arranging the limiting pin 63, and by making the limiting pin 63 pass through the U-shaped groove 62, the guiding pressing block 61 is prevented from rotating relative to the connecting sleeve 10 during the pushing process of the threaded pipe 40, so that the threaded pipe 40 is prevented from driving the elastic ring 51 to rotate during the process that the threaded pipe 40 presses the elastic ring 51, and thus the chromatographic column 20 is driven to rotate relative to the connecting sleeve 10 or another chromatographic column 20 which has been fixed, and the chromatographic column 20 is prevented from being scratched.
Preferably, in order to facilitate the rotation of the threaded tube 40 and improve the installation efficiency, in this embodiment, the threaded tube 40 includes a threaded portion 41 and a flat portion 42 formed by extending one end of the threaded portion 41, and the chromatography column assembly further includes a mounting and dismounting mechanism, the mounting and dismounting mechanism includes a handle 43 sleeved on the flat portion 42, and the handle 43 is connected with the threaded tube 40 through a bolt 44.
In addition, in this embodiment, in order to facilitate the holding of the installation sleeve, the chromatography column assembly further includes an anti-slip screw 11 disposed on the connection sleeve 10, and a thread groove corresponding to the anti-slip screw 11 is disposed in the middle of the connection sleeve 10. Particularly, above-mentioned anti-skidding screw 11 sets up with above-mentioned adapter sleeve 10 mutually perpendicular, when concrete operation, can be convenient for the operator to hold, when preventing that screwed pipe 40 from rotating, drives adapter sleeve 10 and rotates together to make screwed pipe 40 can not remove the preset position to adapter sleeve 10, thereby influence the butt joint effect of chromatography column 20.
Conveniently, the flow of the chromatography column assembly is as follows: firstly, removing the sealing cover assemblies 30 at two ends of one chromatographic column 20, removing the sealing cover assembly 30 at one end of the other chromatographic column 20, penetrating the elastic ring 51, the pressure pad 52 and the guide pressing block 61 at one end of the chromatographic column 20 without the sealing cover assembly 30, inserting the sealing cover assembly into the connecting sleeve 10, fixing the limiting pin 63 on the connecting sleeve 10, limiting the guide pressing block 61, fixing the anti-skid screw 11 on the connecting sleeve 10, further fixing the handle 43 on the threaded pipe 40 through the bolt 44, driving the threaded pipe 40 to move towards the middle of the connecting sleeve 10 by rotating the handle 43, pushing the elastic ring 51, the pressure pad 52 and the guide pressing block 61 to axially move towards one side of the middle of the connecting sleeve 20, fixing and sealing the chromatographic column 20 through the radial deformation of the elastic ring 51, performing the subsequent packing operation after the butt joint of the two chromatographic columns 20 is completed, sealing the chromatographic column 20 through the sealing cover assembly 30 to perform the sedimentation treatment, after the sedimentation is completed, performing the subsequent packing operation on the chromatographic column 20 with the connecting sleeve 20, and performing the packing operation through the sealing operation after the sedimentation is completed, and the sealing operation is performed.
To sum up, the chromatography column assembly in the above embodiment of the present invention, by providing the connecting sleeve 10, the connecting sleeve 10 is provided with a through hole corresponding to the chromatography column 20, the chromatography column assembly further comprises a connecting mechanism disposed between the connecting sleeve 10 and the chromatography column 20, the connecting mechanism comprises a fastening member detachably disposed on the connecting sleeve 10, and an elastic ring 51 disposed between the fastening member and the chromatography column 20, the elastic ring 51 is sleeved on the outer wall of the chromatography column 20, a groove 12 is disposed in the connecting sleeve 10, the fastening member is used for extruding the elastic ring 51, so that two sides of the elastic ring 51 respectively abut against the outer wall of the chromatography column 20 and the inner wall of the groove 12 of the connecting sleeve 10, thereby completing the sealing and fixing between the chromatography column 20 and the connecting sleeve 10, and assembling two chromatography columns 20 with the same pipe diameter through the connecting sleeve 10 and the connecting mechanism, so as to form a container capable of filling enough solvent and filler at one time, the subsequent precipitation is only needed for one time, the loss and time of multiple times of filling are reduced, and sufficient filling can be formed at one time subsequently, so that the filling efficiency is improved, the filling cost is reduced, the guide pressing block 61 is arranged between the elastic ring 51 and the threaded pipe 40, the limiting pin 63 is arranged, the limiting pin 63 penetrates through the U-shaped groove 62, the guide pressing block 61 can be prevented from rotating relative to the connecting sleeve 10, the threaded pipe 40 can be prevented from driving the elastic ring 51 to rotate in the process that the threaded pipe 40 extrudes the elastic ring 51, so that the chromatographic column 20 is driven to rotate relative to the connecting sleeve 10 or another chromatographic column 20 which is fixed, and the chromatographic column 20 is scratched, the threaded pipe 40 can be conveniently disassembled and assembled by arranging the disassembling and assembling mechanism, the antiskid screw 11 can be conveniently held by an operator, and the connecting sleeve 10 is prevented from rotating together when the threaded pipe 40 rotates, so that the threaded pipe 40 cannot move to the preset position of the connection sleeve 10, thereby affecting the butt joint effect of the chromatographic column 20.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. The utility model provides a chromatographic column subassembly, a serial communication port, including the adapter sleeve, the both sides of adapter sleeve are equipped with the chromatographic column respectively, run through in the adapter sleeve set up with the chromatographic column corresponds the butt joint hole that sets up, the chromatographic column subassembly is still including locating the adapter sleeve with coupling mechanism between the chromatographic column, coupling mechanism includes detachable locating the fastener of adapter sleeve, and locate the fastener with elastic ring between the chromatographic column, the elastic ring snare is located the outer wall of chromatographic column, the fastener is used for the extrusion elastic ring, so that elastic ring supports and leans on the chromatographic column.
2. The chromatography column assembly of claim 1, wherein the connecting sleeve is provided with internal threads at two ends, the fastening member is a threaded pipe arranged corresponding to the internal threads, and the threaded pipe is provided with a through hole corresponding to the chromatography column.
3. The chromatography column assembly according to claim 2, wherein a groove corresponding to the elastic ring is formed in the connecting sleeve, and when the threaded pipe presses the elastic ring, the inner side and the outer side of the elastic ring respectively abut against the outer wall of the chromatography column and the inner wall of the groove.
4. The chromatography column assembly of claim 1, wherein the number of the elastic rings is two, and a pressure pad is arranged between the two elastic rings.
5. The chromatography column assembly according to claim 2, further comprising an anti-rotation mechanism, wherein the anti-rotation mechanism comprises a guide pressing block arranged between the elastic ring and the threaded pipe, the anti-rotation mechanism further comprises a limiting pin detachably arranged on the connecting sleeve, and the guide pressing block is provided with a U-shaped groove corresponding to the limiting pin.
6. The chromatography column assembly of claim 2, wherein the threaded tube comprises a threaded portion and a flat portion formed by extending one end of the threaded portion.
7. The chromatography column assembly of claim 6 further comprising a disassembly and assembly mechanism, wherein the disassembly and assembly mechanism comprises a handle sleeved on the planar portion, and the handle is connected with the threaded tube through a bolt.
8. The chromatography column assembly according to claim 1, further comprising an anti-skid screw arranged on the connecting sleeve, wherein a thread groove corresponding to the anti-skid screw is formed in the middle of the connecting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222184796.3U CN218221173U (en) | 2022-08-18 | 2022-08-18 | Chromatography column assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222184796.3U CN218221173U (en) | 2022-08-18 | 2022-08-18 | Chromatography column assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218221173U true CN218221173U (en) | 2023-01-06 |
Family
ID=84684191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222184796.3U Active CN218221173U (en) | 2022-08-18 | 2022-08-18 | Chromatography column assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218221173U (en) |
-
2022
- 2022-08-18 CN CN202222184796.3U patent/CN218221173U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR910008238B1 (en) | Hose fitting | |
| CN208644899U (en) | A kind of uniform filling device of thin-wall sleeve tube kind part cylindricalo grinding | |
| CN218221173U (en) | Chromatography column assembly | |
| CN219673622U (en) | Buckling pipe assembly | |
| CN214788879U (en) | Double-nut rolling ball screw pair | |
| CN110513556A (en) | A kind of band quick connector formula clutch hose construction | |
| CN110802553B (en) | Loading and unloading material port connecting device, special tool and loading and unloading method | |
| CN211540676U (en) | Square tube inner polishing device | |
| CN104416531A (en) | Disassembling method and disassembling tool for plunger type pipe joint | |
| CN203197135U (en) | Pipe pressing machine | |
| CN113623473A (en) | Pipeline purges external plugging device | |
| CN103252419B (en) | A kind of tube press machine | |
| CN219675713U (en) | Valve pressure testing device with quick connector installation | |
| CN220334642U (en) | Front clamping jack | |
| CN215116088U (en) | Liquid chromatographic column joint | |
| CN216682019U (en) | Disc type self-cleaning filter maintenance tool | |
| CN219796427U (en) | Copper-aluminum joint for refrigerating system | |
| CN103411466A (en) | Clamping device for plate heat exchanger | |
| CN212796818U (en) | Roller brush convenient to disassemble and assemble for car washer | |
| CN220770504U (en) | Anti-slip half joint | |
| CN220354716U (en) | Radial positive pressure and negative pressure bidirectional compound self-expanding sealing structure | |
| CN214037323U (en) | Steel band reinforced polyethylene corrugated pipe with good connecting and sealing effects | |
| CN219231455U (en) | Trace sample solvent removing device | |
| CN103433786A (en) | Clamp for cross axle vehicle end surface and inner hole of differential gear | |
| CN216046043U (en) | Rack type hose coupler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |