CN109011697A - Low pressure chromatography column - Google Patents
Low pressure chromatography column Download PDFInfo
- Publication number
- CN109011697A CN109011697A CN201811114311.5A CN201811114311A CN109011697A CN 109011697 A CN109011697 A CN 109011697A CN 201811114311 A CN201811114311 A CN 201811114311A CN 109011697 A CN109011697 A CN 109011697A
- Authority
- CN
- China
- Prior art keywords
- piston
- filler
- low pressure
- chromatography column
- component
- 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.)
- Pending
Links
- 238000004587 chromatography analysis Methods 0.000 title claims abstract description 20
- 239000000945 filler Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000012856 packing Methods 0.000 claims abstract description 22
- 239000007791 liquid phase Substances 0.000 claims abstract description 20
- 238000007373 indentation Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 21
- 230000003028 elevating effect Effects 0.000 claims description 16
- 230000037361 pathway Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/24—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the treatment of the fractions to be distributed
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
The invention discloses a kind of low pressure chromatography columns, it includes body, it further includes cylinder body, piston portion and carries out out the liquid allocation component out that liquid collects for the liquid phase to filler in outflow packing cavity, and the packing cavity of accommodating filler is provided in the cylinder body；The piston portion includes piston component and is connected with piston component to drive piston component mobile, piston component indentation packing cavity is set to act on the piston driving assembly on filler, it is provided on the piston component for when piston component is pressed into place, liquid phase to be guided to the feed liquor allocation component of the upper surface of filler in packing cavity.The present invention is capable of the height of adjustable column bed as needed, the accurate pressing force for controlling filler surface, so that the pressure acted in filler surface is more balanced, filter effect is more preferable.
Description
Technical field
The present invention relates to a kind of low pressure chromatography columns.
Background technique
Currently, the low pressure chromatography column of the prior art, filter structure is fairly simple, and filtering is not fine enough, and due to column bed
Height adjustment is inconvenient, and filler surface pressing force can not be adjusted accurately, and use is very inconvenient.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, a kind of low pressure chromatography column, energy are provided
The height of enough adjustable column beds as needed, the accurate pressing force for controlling filler surface, so that acting in filler surface
Pressure is more balanced, and filter effect is more preferable.
In order to solve the above-mentioned technical problem, the technical scheme is that a kind of low pressure chromatography column, it includes body, it
Further include:
Cylinder body is provided with the packing cavity of accommodating filler in the cylinder body；
Piston portion, the piston portion include piston component and are connected with piston component to drive piston component mobile, make piston
Component indentation packing cavity acts on the piston driving assembly on filler, is provided on the piston component in piston component pressure
When entering in place, liquid phase is guided to the feed liquor allocation component of the upper surface of filler in packing cavity；
The liquid allocation component out that liquid collects is carried out out for the liquid phase to filler in outflow packing cavity.
A kind of specific structure of piston driving assembly is further provided, so as to realize driving piston component movement
Purpose, the piston driving assembly include power source and elevating screw pair of nut, and the elevating screw pair of nut includes phase interworking
The elevating screw and nut of conjunction, the elevating screw are movably connected on body, and the elevating screw can be in the axis of cylinder body
It moving up, the power source is connected by transmission mechanism with the nut, so that nut described in the power source drive rotates,
When nut rotation, the elevating screw is moved up in the axis of cylinder body.
A kind of specific structure of transmission mechanism is further provided, the transmission mechanism includes driving gear and driven tooth
Wheel, the driving gear are meshed with the driven gear, and the driven gear is fixedly connected with the nut.
Further, the power source is air motor.
Further for the sealing performance improved between piston component and cylinder body, the piston component includes piston and arranging
Sealing ring on piston outer periphery wall and with the sealing cooperation of inboard wall of cylinder block face.
Further for during mobile piston component enters cylinder body, piston component is oriented to, the piston
Component further includes upper guide ring and lower guide ring, and the top of piston outer periphery wall, the lower guide ring is arranged in the upper guide ring
The lower part of piston outer periphery wall is set.
Further for avoiding being pressed into piston component into cylinder body and detaching piston component out of cylinder body and cause to seal
It the phenomenon that circle damage, improves the service life of piston component, the step that radial section is L-type is provided on the periphery wall of the piston,
The sealing ring is disposed in step, and the downside of the sealing ring by the step step surface crimp, it is described on lead
The upper side of the sealing ring is crimped to ring.
A kind of specific structure of feed liquor allocation component is further provided, the feed liquor allocation component includes being installed in work
Feed pathway, upper distribution plate and upper distribution sieve plate on plug assembly, the outlet of feed pathway is against the upper distribution plate upper surface
Middle part, the upper distribution sieve plate is located at the lower section of the upper distribution plate, so that the liquid phase that enters from feed pathway is from upper distribution
Distribution plate is flowed through in the middle part of plate, distribution sieve plate is entered back into, finally even into filler.
A kind of specific structure of liquid allocation component out is further provided, the liquid allocation component out includes lower distribution sieve
Plate, lower distribution plate and liquid outlet channel, middle part of the import of liquid outlet channel against the lower distribution plate lower surface, the lower distribution sieve
Plate is located at the top of the lower distribution plate, so that the liquid phase of the filler outflow out of packing cavity first passes through lower distribution sieve plate, passes through
Lower distribution plate is finally collected to liquid outlet channel.
Further, the body further includes pedestal, is equipped with lower distribution flange on the pedestal, the lower distribution sieve plate and
Lower distribution plate is arranged between cylinder body and lower distribution flange, and the liquid outlet channel is mounted on lower distribution flange.
After above-mentioned technical proposal, the present invention has the following beneficial effects:
1, the present invention drives piston component movement by piston driving assembly, to be pressed into the packing cavity of cylinder body, carries out to filler
Pressure, by the movement of piston driving assembly regulating piston, can realize the purpose of the height of adjustable column bed as needed,
The pressing force of filler surface has been accurately controlled, so that the pressure acted in filler surface is more balanced, filter effect
More preferably；
2, the present invention has carried out special designing to piston component, using the effect of upper guide ring and step by the upper side of sealing ring
It is protected with downside, from but regardless of piston component is being pressed into cylinder body or is detaching from cylinder body the process of piston component
In, sealing ring is not affected, improves the service life of piston component.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of low pressure chromatography column of the invention；
Fig. 2 is the structure sectional view of piston component of the invention.
Specific embodiment
In order that the present invention can be more clearly and readily understood, right below according to specific embodiment and in conjunction with attached drawing
The present invention is described in further detail.
As shown in Figure 1, 2, a kind of low pressure chromatography column, it includes body, it further include:
Cylinder body 1 is provided with the packing cavity 11 of accommodating filler in the cylinder body 1；
Piston portion, the piston portion include piston component and are connected with piston component to drive piston component mobile, make piston
Component indentation packing cavity 11 acts on the piston driving assembly on filler, is provided on the piston component in piston component
When being pressed into place, liquid phase is guided to the feed liquor allocation component of the upper surface of filler in packing cavity；
The liquid allocation component out that liquid collects is carried out out for the liquid phase to filler in outflow packing cavity 11；
Specifically, the body includes multiple columns 9, and the lower end of the upper end connecting cover plate 91 of column 9, column 9 connects cylinder body 1；
As shown in Figure 1, the piston driving assembly includes power source and elevating screw pair of nut, the elevating screw pair of nut packet
Include mutually matched elevating screw 21 and nut 22, the elevating screw 21 is movably connected in body, and (what is referred specifically to herein is
On the cover board 91 of body) on, and the elevating screw 21 can be moved up in the axis of cylinder body 1, and the power source passes through transmission
Mechanism is connected with the nut 22, described when the nut 22 rotation so as to the rotation of nut 22 described in the power source drive
Elevating screw 21 is moved up in the axis of cylinder body 1.
As shown in Figure 1, the transmission mechanism includes driving gear 31 and driven gear 32, the driving gear 31 with it is described
Driven gear 32 is meshed, and the driven gear 32 is fixedly connected with the nut 22.
The power source can be air motor 4, and air motor 4 is gone to drive by gas motor part, and air motor 4 is first
It is connected with the input terminal of speed reducer 42, the output end of speed reducer 42 is connected with driving gear 31 again, this time air motor 4 and deceleration
The power combination of machine 42 can also be substituted by other power combinations, for example motor and speed reducer or electric reducer.
As shown in Fig. 2, the piston component include piston 51 and be disposed on 51 periphery wall of piston and with 1 inner wall of cylinder body
Seal the sealing ring 52 of cooperation；Sealing ring guiding parts 521 is provided in sealing ring 52.
As shown in Fig. 2, the piston component further includes upper guide ring 53 and lower guide ring 54, the upper guide ring 53 is arranged
On the top of 51 periphery wall of piston, the lower part of 51 periphery wall of piston is arranged in the lower guide ring 54.
As shown in Fig. 2, being provided with the step that radial section is L-type, the sealing ring 52 on the periphery wall of the piston 51
It is disposed in step, and the downside of the sealing ring 52 is crimped by the step surface of the step, the upper guide ring 53 is pressed
Connect the upper side of the sealing ring 52.Special designing has been carried out to piston component in the present embodiment, has utilized upper 53 He of guide ring
The effect of step protects the upper side of sealing ring 52 and downside, from but regardless of by piston component be pressed into cylinder body 1
Or during from cylinder body 1 detaching piston component, sealing ring 52 is not affected, improves the use of piston component
Service life.
As shown in Figure 1, the feed liquor allocation component includes the feed pathway 61 being installed on piston component, upper distribution plate
62 and upper distribution sieve plate 63, against the middle part of upper 62 upper surface of distribution plate, the upper distribution sieved for the outlet of feed pathway 61
Plate 63 is located at the lower section of the upper distribution plate 62, to flow through from the liquid phase that feed pathway 61 enters from the middle part of upper distribution plate 62
Upper distribution plate 62 enters back into distribution sieve plate 63, finally even into filler；It is set between upper distribution plate 62 and upper distribution sieve plate 63
It is equipped with liquid phase distribution flow path, even in liquid phase is mainly guided to the upper of filler by the effect of upper distribution plate 62 and upper distribution sieve plate 63
Surface.
As shown in Figure 1, it is described go out liquid allocation component include lower distribution sieve plate 71, lower distribution plate 72 and liquid outlet channel 73, out
Against the middle part of 72 lower surface of lower distribution plate, the lower distribution sieve plate 71 is located at the lower distribution plate for the import in liquid channel 73
72 top passes through lower distribution plate 72, most so that the liquid phase of the filler outflow out of packing cavity 11 first passes through lower distribution sieve plate 71
After be collected to liquid outlet channel 73；Equally, liquid phase distribution flow path, master are also equipped between lower distribution plate 72 and lower distribution sieve plate 71
If liquid phase is collected to liquid outlet channel 73.
In the present embodiment, piston component is driven to be pressed into the packing cavity of cylinder body 1 by piston driving assembly first, until
Behind position, liquid phase is guided to the upper surface of filler by feed liquor allocation component, after the filtering of filler, then by going out liquid distribution
Component carries out out liquid to the liquid phase of filler in outflow packing cavity 11 and collects.
As shown in Figure 1, the body further includes pedestal 8, lower distribution flange 81 is installed on the pedestal 8, described lower point
It is arranged between cylinder body 1 and lower distribution flange 81 with sieve plate 71 and lower distribution plate 72, the liquid outlet channel 73 is mounted on lower distribution
On flange 81.
In addition, castor 100 is additionally provided on pedestal, to facilitate the movement of low pressure chromatography column.
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effects carry out
It is further described, it should be understood that the above is only a specific embodiment of the present invention, is not limited to this
Invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this hair
Within bright protection scope.
Claims (10)
1. a kind of low pressure chromatography column, it includes body, which is characterized in that it further include:
Cylinder body (1), the interior packing cavity (11) for being provided with accommodating filler of the cylinder body (1)；
Piston portion, the piston portion include piston component and are connected with piston component to drive piston component mobile, make piston
Component indentation packing cavity (11) acts on the piston driving assembly on filler, is provided on the piston component in piston group
When part is pressed into place, liquid phase is guided to the feed liquor allocation component of the upper surface of filler in packing cavity；
The liquid allocation component out that liquid collects is carried out out for the liquid phase to outflow packing cavity (11) interior filler.
2. low pressure chromatography column according to claim 1, it is characterised in that: the piston driving assembly includes power source and liter
Screw pair drops, and the elevating screw pair of nut includes mutually matched elevating screw (21) and nut (22), the lifting
Lead screw (21) is movably connected on body, and the elevating screw (21) can be moved up in the axis of cylinder body (1), the power
Source is connected by transmission mechanism with the nut (22), so as to nut described in the power source drive (22) rotation, when the spiral shell
When female (22) rotation, the elevating screw (21) moves up in the axis of cylinder body (1).
3. low pressure chromatography column according to claim 2, it is characterised in that: the transmission mechanism include driving gear (31) and
Driven gear (32), the driving gear (31) are meshed with the driven gear (32), the driven gear (32) with it is described
Nut (22) is fixedly connected.
4. low pressure chromatography column according to claim 2, it is characterised in that: the power source is air motor (4).
5. low pressure chromatography column according to claim 1, it is characterised in that: the piston component includes piston (51) and is arranged
Sealing ring (52) on piston (51) periphery wall and with the sealing cooperation of cylinder body (1) inner wall.
6. low pressure chromatography column according to claim 5, it is characterised in that: the piston component further includes upper guide ring (53)
With lower guide ring (54), the upper guide ring (53) is arranged on the top of piston (51) periphery wall, and the lower guide ring (54) sets
It sets in the lower part of piston (51) periphery wall.
7. low pressure chromatography column according to claim 6, it is characterised in that: be provided with diameter on the periphery wall of the piston (51)
It is the step of L-type to section, the sealing ring (52) is disposed in step, and the downside of the sealing ring (52) is described
The step surface of step crimps, and the upper guide ring (53) crimps the upper side of the sealing ring (52).
8. low pressure chromatography column according to claim 1, it is characterised in that: the feed liquor allocation component includes being installed in work
Feed pathway (61), upper distribution plate (62) and upper distribution sieve plate (63) on plug assembly, the outlet of feed pathway (61) is against institute
The middle part of distribution plate (62) upper surface is stated, upper distribution sieve plate (63) is located at the lower section of the upper distribution plate (62), so as to
The liquid phase entered from feed pathway (61) flows through upper distribution plate (62) in the middle part of upper distribution plate (62), enters back into distribution sieve plate
(63), finally even into filler.
9. low pressure chromatography column according to claim 1, it is characterised in that: the liquid allocation component out includes lower distribution sieve plate
(71), lower distribution plate (72) and liquid outlet channel (73), the import of liquid outlet channel (73) is against the lower distribution plate (72) lower surface
Middle part, lower distribution sieve plate (71) is located at the top of the lower distribution plate (72), so as to from packing cavity (11) interior filler stream
Liquid phase out first passes through lower distribution sieve plate (71), passes through lower distribution plate (72), is finally collected to liquid outlet channel (73).
10. low pressure chromatography column according to claim 9, it is characterised in that: the body further includes pedestal (8), the bottom
Lower distribution flange (81) is installed on seat (8), the lower distribution sieve plate (71) and lower distribution plate (72) be arranged cylinder body (1) and under
It distributes between flange (81), the liquid outlet channel (73) is mounted on lower distribution flange (81).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114311.5A CN109011697A (en) | 2018-09-25 | 2018-09-25 | Low pressure chromatography column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114311.5A CN109011697A (en) | 2018-09-25 | 2018-09-25 | Low pressure chromatography column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109011697A true CN109011697A (en) | 2018-12-18 |
Family
ID=64617760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811114311.5A Pending CN109011697A (en) | 2018-09-25 | 2018-09-25 | Low pressure chromatography column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109011697A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115335696A (en) * | 2020-03-27 | 2022-11-11 | 积水医疗株式会社 | Liquid chromatography member |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0762118A2 (en) * | 1995-09-12 | 1997-03-12 | K.D. PHARMA GmbH | Chromatography column |
| US5667675A (en) * | 1996-02-29 | 1997-09-16 | Varian Associate, Inc. | Collapsible apparatus for compressing packing material in liquid chromatography columns and methods of use |
| US6190560B1 (en) * | 1999-09-30 | 2001-02-20 | Mann Welding Company | Slurry fill method and valve |
| US20070029241A1 (en) * | 2005-08-03 | 2007-02-08 | Agilent Technologies, Inc. | Column for liquid chromatography with adjustable compression |
| CN101238366A (en) * | 2005-10-21 | 2008-08-06 | 通用电气健康护理生物科学股份公司 | Automated packing system and method for chromatography columns |
| US20110120951A1 (en) * | 2009-11-23 | 2011-05-26 | Thomas Wesley Hampton | Apparatus and methods for packing chromatography columns |
| CN202707674U (en) * | 2012-08-10 | 2013-01-30 | 中船重工中南装备有限责任公司 | Novel hydraulic cylinder |
| CN203123618U (en) * | 2012-07-10 | 2013-08-14 | 海正药业(杭州)有限公司 | Low-pressure chromatographic column packing device |
| US20160250566A1 (en) * | 2011-09-27 | 2016-09-01 | Daniel Michael Bailey | Chromatography Column |
| CN209005270U (en) * | 2018-09-25 | 2019-06-21 | 常州瑞曦生物科技有限公司 | Low pressure chromatography column |
-
2018
- 2018-09-25 CN CN201811114311.5A patent/CN109011697A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0762118A2 (en) * | 1995-09-12 | 1997-03-12 | K.D. PHARMA GmbH | Chromatography column |
| US5667675A (en) * | 1996-02-29 | 1997-09-16 | Varian Associate, Inc. | Collapsible apparatus for compressing packing material in liquid chromatography columns and methods of use |
| US6190560B1 (en) * | 1999-09-30 | 2001-02-20 | Mann Welding Company | Slurry fill method and valve |
| US20070029241A1 (en) * | 2005-08-03 | 2007-02-08 | Agilent Technologies, Inc. | Column for liquid chromatography with adjustable compression |
| CN101238366A (en) * | 2005-10-21 | 2008-08-06 | 通用电气健康护理生物科学股份公司 | Automated packing system and method for chromatography columns |
| US20110120951A1 (en) * | 2009-11-23 | 2011-05-26 | Thomas Wesley Hampton | Apparatus and methods for packing chromatography columns |
| US20160250566A1 (en) * | 2011-09-27 | 2016-09-01 | Daniel Michael Bailey | Chromatography Column |
| CN203123618U (en) * | 2012-07-10 | 2013-08-14 | 海正药业(杭州)有限公司 | Low-pressure chromatographic column packing device |
| CN202707674U (en) * | 2012-08-10 | 2013-01-30 | 中船重工中南装备有限责任公司 | Novel hydraulic cylinder |
| CN209005270U (en) * | 2018-09-25 | 2019-06-21 | 常州瑞曦生物科技有限公司 | Low pressure chromatography column |
Non-Patent Citations (2)
| Title |
|---|
| 张文清: "分离分析化学 第2版", 31 July 2016, 华东理工大学出版社, pages: 118 * |
| 徐怀德: "天然产物提取工艺学", 30 June 2008, 中国轻工业出版社, pages: 185 - 186 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115335696A (en) * | 2020-03-27 | 2022-11-11 | 积水医疗株式会社 | Liquid chromatography member |
| CN115335696B (en) * | 2020-03-27 | 2024-04-30 | 积水医疗株式会社 | Member for liquid chromatography |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203223565U (en) | Water purification and filter device and water stop valve of same | |
| CN209005270U (en) | Low pressure chromatography column | |
| CN215516585U (en) | Duplex position test tube is uncapping machine in batches | |
| CN109011697A (en) | Low pressure chromatography column | |
| CN208034286U (en) | A kind of cast(ing) surface grinding device | |
| CN116764824B (en) | Centrifuge for monosodium glutamate production | |
| CN206749127U (en) | A kind of structure-improved of four posts extruder | |
| CN201164809Y (en) | Colloid mill | |
| CN209012174U (en) | Servo electric cylinders formula purifies and separates system | |
| CN208991948U (en) | A kind of novel pneumatic mash welder | |
| CN109486639A (en) | Power ultrasonic foraging white spirit ageing cylinder | |
| CN210251404U (en) | Press filter | |
| CN205472594U (en) | Automatic rotation type oil filling machine oil filling valve structure | |
| CN210510992U (en) | Lubricating oil filling device | |
| CN208611878U (en) | Filter-pressing device | |
| CN210973805U (en) | Adjustable semi-automatic spiral cover machine spiral cover device | |
| CN213712008U (en) | Asphalt overflow regulating valve | |
| CN209580631U (en) | A kind of cake regulating device out of oil press | |
| CN108016079A (en) | A kind of efficient bakers' yeast preforming device | |
| CN208261598U (en) | A kind of metal sealing tank shell material flanging and overturning position control device | |
| CN210393681U (en) | Resin coating filling device | |
| CN203407462U (en) | Weighing type single-drum tea rolling machine | |
| CN110081190A (en) | A kind of bidirectional sealed butterfly valve | |
| CN214248428U (en) | Novel pressure reducing valve | |
| CN214872866U (en) | Upper die device of powder forming machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |