CN211274391U - Agitating unit is used in acetylglutamic acid preparation - Google Patents
Agitating unit is used in acetylglutamic acid preparation Download PDFInfo
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- CN211274391U CN211274391U CN201922100322.4U CN201922100322U CN211274391U CN 211274391 U CN211274391 U CN 211274391U CN 201922100322 U CN201922100322 U CN 201922100322U CN 211274391 U CN211274391 U CN 211274391U
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- Prior art keywords
- sleeve
- connecting rod
- mounting plate
- stirring
- connecting strip
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- RFMMMVDNIPUKGG-YFKPBYRVSA-N N-acetyl-L-glutamic acid Chemical compound CC(=O)N[C@H](C(O)=O)CCC(O)=O RFMMMVDNIPUKGG-YFKPBYRVSA-N 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims description 9
- 238000003756 stirring Methods 0.000 claims abstract description 49
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 6
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a stirring device for preparing acetylglutamic acid, which comprises a base, a driving mechanism, a mounting plate, a speed reduction motor, a shaft coupling and a stirring component, wherein the upper surface of the base is provided with a mounting groove, and the mounting plate is supported by the driving mechanism right above the mounting groove; the speed reducing motor is fixed on the mounting plate; the stirring assembly comprises a connecting rod assembly, an upper sleeve, a screw, a rotating sleeve, an internal thread ring, an upper bearing, a lower bearing and a lower sleeve; the upper end and the lower end of the upper connecting rod are respectively hinged with the bottom of the lower sleeve and the top end of the lower connecting rod, and the bottom end of the lower connecting rod is hinged with the bottom of the screw rod; the upper sleeve is connected with the lower sleeve through a sleeve connecting assembly. The utility model is convenient for the stirring work inside the three-mouth bottle to be carried out smoothly, and is beneficial to the rapid proceeding of the chemical reaction inside the three-mouth bottle; set up the mounting groove that matches with three-necked bottle simultaneously, improved the stability that three-necked bottle was placed.
Description
Technical Field
The utility model relates to a chemistry technical field, concretely relates to agitating unit is used in acetylglutamic acid preparation.
Background
The preparation process of the acetyl glutamic acid comprises the following steps: adding SM1, water and SM into three-neck bottle in sequence2The reaction temperature is 20-25 ℃, and the reaction time is 10-14 h; after the reaction is complete, post-treatment: concentrating the water under reduced pressure, cooling to 0-5 deg.C, precipitating white solid, stirring for 6-8h, filtering, leaching the filtered solid with methanol, and drying to obtain acetyl glutamic acid.
In the preparation of acetylglutamic acid, it is indispensable to use a three-neck flask, which is a chemical instrument and is also called a three-neck flask, a three-neck round-bottom flask, etc. The three-mouth bottle is provided with three mouths, the diameter of the mouth is small, a stirring mechanism with large stirring amplitude is not convenient to place, and only a rod-shaped stirring rod, such as the stirring rod adopted in the prior art CN203229483U, can be adopted; or directly with three-mouth bottle bottom opening, the base is agitating unit to can obtain the agitating unit of bigger stirring range, but in this kind of device, the dismantlement of three-mouth bottle is washd unchangeably, the article that obtains after the reaction are got the material inconvenient, and still need consider sealed, and the technical difficulty is big.
Disclosure of Invention
The utility model aims to provide a: the utility model provides an agitating unit is used in acetylglutamic acid preparation, has solved current three-necked bottle that is used for because of being limited by the bottleneck diameter of three-necked bottle, can't use the big rabbling mechanism's of stirring range technical problem. The utility model discloses the structure that will be used for the "barred body" of stirring improves to when making its bottleneck that needs pass three-necked bottle, can reduce its maximum external diameter, when needs stir, can obtain the stirring rod that stirring radius is big through changing the structure again, thereby the stirring work of the inside three-necked bottle of being convenient for goes on smoothly, does benefit to its inside chemical reaction and goes on fast.
The utility model adopts the technical scheme as follows:
the stirring device for preparing the acetyl glutamic acid comprises a base, a linear driving mechanism, a mounting plate, a speed reducing motor, a coupler and a stirring assembly, wherein a three-mouth bottle mounting groove is formed in the upper surface of the base, the mounting groove is in a shape of a concave-poor sphere, a shell of the driving mechanism is connected with the base, a driving end of the driving mechanism is connected with the mounting plate, and the mounting plate is supported right above the mounting groove; the speed reducing motor is fixed on the mounting plate, an output shaft of the speed reducing motor penetrates through the mounting plate from top to bottom, and the axis of the speed reducing motor is coaxial with the axis of the mounting groove;
the stirring assembly comprises a connecting rod assembly, an upper sleeve, a screw rod, a rotary sleeve, an internal thread ring, an upper bearing, a lower bearing and a lower sleeve, wherein the axes of the upper sleeve, the screw rod, the rotary sleeve, the internal thread ring, the upper bearing, the lower bearing and the lower sleeve are overlapped with each other;
the connecting rod assembly is positioned between the bottom of the lower sleeve and the bottom of the screw rod and comprises an upper connecting rod and a lower connecting rod, the upper end and the lower end of the upper connecting rod are respectively hinged with the bottom of the lower sleeve and the top end of the lower connecting rod, the bottom end of the lower connecting rod is hinged with the bottom of the screw rod, the hinged axes are parallel to each other and perpendicular to the axis of the screw rod, and when the bottom of the screw rod is close to the bottom of the lower sleeve, the hinged part between the upper connecting rod and the lower connecting rod moves towards the direction far away from the axis of the screw rod;
the upper sleeve is connected with the lower sleeve through a sleeve connecting assembly.
Further, a section of thick bamboo coupling assembling includes connecting strip, lower connecting strip, bolt and nut, go up the connecting strip and be the Z style of calligraphy with lower connecting strip, the one end and the last muffjoint of going up the connecting strip, the one end contact of its other end and lower connecting strip, the other end and the lower muffjoint of lower connecting strip of connecting strip, the pole portion end of bolt runs through behind connecting strip and the lower connecting strip with nut threaded connection.
Further, the cylinder connecting assembly is provided with two cylinders, and is centrosymmetric along the axis of the screw rod.
Further, the connecting rod assemblies are two in number and are centrosymmetric along the axis of the screw.
Further, the driving mechanism is a pneumatic cylinder, the axis of the pneumatic cylinder is perpendicular to the base, and the cylinder bottom of the pneumatic cylinder is connected with the base.
Furthermore, guide rods are arranged on two sides of the driving mechanism and are vertically fixed on the base, and the tops of the guide rods movably penetrate through the mounting plate.
Further, the coupler is an anchor ear type coupler.
Due to the adoption of the technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses agitating unit is used in acetylglutamic acid preparation improves the structure of the "barred body" that is used for stirring to make it can reduce its maximum external diameter when needing to pass the bottleneck of three-necked bottle, when needing to stir, can obtain the stirring rod that stirring radius is big through changing the structure again, can mix the compound in the three-necked bottle more fast, thereby the stirring work of three-necked bottle inside of being convenient for goes on smoothly, does benefit to its inside chemical reaction and goes on fast; meanwhile, the mounting groove matched with the three-mouth bottle is arranged, so that the placing stability of the three-mouth bottle is improved, and the chemical reaction is favorably and smoothly carried out;
2. the utility model discloses agitating unit is used in acetylglutamic acid preparation, a section of thick bamboo coupling assembling can realize sleeve and lower telescopic fixed connection, can be convenient for again rotate the swivel sleeve, have further improved the utility model discloses a convenience and the reliability of work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts, and the proportional relationship of each component in the drawings in the present specification does not represent the proportional relationship in the actual material selection design, and is only a schematic diagram of the structure or the position, in which:
fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the stirring assembly;
FIG. 3 is a schematic view of the mixing assembly when deployed;
FIG. 4 is a schematic view of a portion of the stirring assembly;
FIG. 5 is a schematic view of the present invention in cooperation with a three-necked bottle;
FIG. 6 is a schematic view of the position of the present invention inserted into a three-necked bottle;
fig. 7 is a schematic structural diagram of the stirring in the three-necked bottle of the present invention.
Reference numerals in the drawings indicate:
the automatic bottle opening and closing device comprises a base 1, a 2-type driving mechanism, a 3-mounting plate, a 4-speed reducing motor, a 5-coupler, a 6-mounting groove, a 7-upper sleeve, an 8-screw rod, a 9-rotating sleeve, a 10-internal thread ring, an 11-upper bearing, a 12-lower bearing, a 13-lower sleeve, a 14-upper connecting rod, a 15-lower connecting rod, a 16-upper connecting strip, a 17-lower connecting strip, an 18-bolt, a 19-nut, a 20-guide rod and a 21-three-mouth bottle.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
The term "connected" as used herein is intended to mean a conventional connection, such as integrally formed, welded, riveted, etc., if not specifically emphasized, and the specific connection is preferably adapted according to conventional technical knowledge in the art. All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1 to 7.
Example 1
As shown in fig. 1-7, the stirring device for preparing acetylglutamic acid of the present invention comprises a base 1, a linear driving mechanism 2, a mounting plate 3, a speed reduction motor 4, a shaft coupling 5 and a stirring assembly, wherein a three-neck bottle mounting groove 6 is provided on the upper surface of the base 1, the mounting groove 6 is in the shape of a concave-convex sphere, the housing of the driving mechanism 2 is connected with the base 1, the driving end thereof is connected with the mounting plate 3, and the mounting plate 3 is supported right above the mounting groove 6; the speed reducing motor 4 is fixed on the mounting plate 3, an output shaft of the speed reducing motor penetrates through the mounting plate 3 from top to bottom, and the axis of the speed reducing motor is coaxial with the axis of the mounting groove 6;
the stirring assembly comprises a connecting rod assembly, an upper sleeve 7, a screw 8, a rotary sleeve 9, an internal thread ring 10, an upper bearing 11, a lower bearing 12 and a lower sleeve 13, wherein the axes of the upper sleeve 7, the screw 8, the rotary sleeve 9, the internal thread ring 10, the upper bearing 11, the lower bearing 12 and the lower sleeve 13 are overlapped, the top end of the upper sleeve 7 is connected with an output shaft through a coupler 5, the bottom end of the upper sleeve 7 is inserted into the rotary sleeve 9 and is rotatably connected with the rotary sleeve 9 through the upper bearing 11, the inner ring and the outer ring of the upper bearing 11 are in interference fit with the outer wall of the upper sleeve 7 and the inner wall of the rotary sleeve 9 respectively, the top of the lower sleeve 13 is inserted into the rotary sleeve 9 and is rotatably connected with the rotary sleeve 9 through the lower bearing 12, the inner ring and the outer ring of the lower bearing 12 are in interference fit with the outer wall of the lower sleeve 13 and the inner wall of the rotary, the top end of the screw 8 penetrates through the lower sleeve 13 from bottom to top and is in threaded connection with the internal thread ring 10;
the connecting rod assembly is positioned between the bottom of the lower sleeve 13 and the bottom of the screw 8 and comprises an upper connecting rod 14 and a lower connecting rod 15, the upper end and the lower end of the upper connecting rod 14 are respectively hinged with the bottom of the lower sleeve 13 and the top end of the lower connecting rod 15, the bottom end of the lower connecting rod 15 is hinged with the bottom of the screw 8, the hinged axes are parallel to each other and perpendicular to the axis of the screw 8, and when the bottom of the screw 8 is close to the bottom of the lower sleeve 13, the hinged part between the upper connecting rod 14 and the lower connecting rod 15 moves towards the direction far away from the axis of the screw 8;
the upper sleeve 7 is connected with the lower sleeve 13 through a sleeve connecting assembly.
The two connecting rod assemblies are symmetrical along the axis center of the screw 8.
When in use, the three-mouth bottle is placed in the mounting groove 6, and the axis of the three-mouth bottle is superposed with the axis of the mounting groove 6; at the moment, the stirring assembly is positioned right above the three-mouth bottle, the upper connecting rod 14 and the lower connecting rod 15 are positioned at vertical positions and are folded around the mandrel 2, the distance from the hinged part between the upper connecting rod 14 and the lower connecting rod 15 to the axis of the screw is the largest, and the largest distance from the hinged part between the upper connecting rod 14 and the lower connecting rod 15 to the axis of the screw is smaller than the diameter of the mouth of the three-mouth bottle; then, the driving mechanism 2 is started to enable the telescopic end of the driving mechanism to retract, so that the mounting plate 3 is driven to move downwards, the bottom end of the stirring assembly is inserted into the three-mouth bottle through the middle bottle opening of the three-mouth bottle, and when the hinged part between the upper connecting rod 14 and the lower sleeve 13 is also positioned in the inner cavity of the three-mouth bottle, the driving mechanism 2 moves in place and stops working; rotate swivel sleeve 9 next to lift screw rod 9, so that when the bottom of screw rod 8 was close to the bottom of lower sleeve 13, the articulated position between upper link 14 and the lower link 15 removed to the direction of keeping away from the axis of screw rod 8, thereby made the utility model discloses a rabbling mechanism obtains bigger stirring radius.
When the stirring assembly needs to be withdrawn, the rotating sleeve 9 is rotated reversely to enable the screw to move downwards, the bottom of the screw is far away from the bottom of the lower sleeve, so that the upper connecting rod 14 and the lower connecting rod 15 are in vertical positions and are gathered around the screw, then the driving mechanism 2 is started to enable the telescopic end of the driving mechanism to extend outwards, and therefore the whole stirring assembly is lifted upwards until the bottom end of the stirring assembly is withdrawn from the opening of the three-mouth bottle.
The utility model improves the structure of the 'stick body' for stirring, so that the maximum outer diameter of the 'stick body' can be reduced when the 'stick body' needs to pass through the bottleneck of the three-mouth bottle, and when the 'stick body' needs to be stirred, the stirring stick with large stirring radius can be obtained by changing the structure, and the compound in the three-mouth bottle can be mixed more quickly, thereby facilitating the smooth stirring work in the three-mouth bottle and facilitating the quick chemical reaction in the three-mouth bottle; meanwhile, the mounting groove matched with the three-mouth bottle is formed, so that the placing stability of the three-mouth bottle is improved, and the chemical reaction is favorably and smoothly carried out.
Example 2
This embodiment is based on embodiment 1, and the present invention is further described.
The utility model discloses in, as shown in fig. 1-4, a section of thick bamboo coupling assembling includes connecting strip 16, lower connecting strip 17, bolt 18 and nut 19, it is the Z style of calligraphy with lower connecting strip 17 to go up connecting strip 16, goes up the one end and the last sleeve 7 of connecting strip 16 and is connected, and its other end contacts with the one end of lower connecting strip 17, the other end and the lower sleeve 13 of lower connecting strip 17 are connected, bolt 18's pole portion end run through behind connecting strip 16 and the lower connecting strip 17 with nut 19 threaded connection.
The cylinder connecting assemblies are two in number and are centrosymmetric along the axis of the screw 8.
A coupling assembling can realize the fixed connection of upper sleeve 7 and lower sleeve 13, can be convenient for again rotate the swivel mount, has further improved the utility model discloses a convenience and the reliability of work.
Example 3
The present embodiment is further described.
As shown in fig. 1, in the present invention, guide rods 20 are disposed on both sides of the driving mechanism 2, the guide rods 20 are vertically fixed on the base 1, and the top of the guide rods is movably disposed through the mounting plate 3. The guide rod 20 is convenient for guiding and limiting the up-and-down movement of the mounting plate.
Further, the coupler 5 is a hoop coupler. The hoop type coupler is adopted to facilitate quick replacement of the stirring assembly.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be covered within the protection scope of the present invention without the changes or substitutions conceived by the inventive work within the technical scope disclosed by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (7)
1. Agitating unit is used in acetylglutamic acid preparation, its characterized in that: the device comprises a base (1), a linear driving mechanism (2), a mounting plate (3), a speed reducing motor (4), a coupler (5) and a stirring assembly, wherein a three-mouth bottle mounting groove (6) is formed in the upper surface of the base (1), the mounting groove (6) is in a shape of a concave-inferior sphere, a shell of the driving mechanism (2) is connected with the base (1), and a driving end of the driving mechanism is connected with the mounting plate (3) and supports the mounting plate (3) right above the mounting groove (6); the speed reducing motor (4) is fixed on the mounting plate (3), an output shaft of the speed reducing motor penetrates through the mounting plate (3) from top to bottom, and the axis of the speed reducing motor is coaxial with the axis of the mounting groove (6);
the stirring assembly comprises a connecting rod assembly, an upper sleeve (7), a screw rod (8), a rotary sleeve (9), an internal thread ring (10), an upper bearing (11), a lower bearing (12) and a lower sleeve (13), wherein the axes of the upper sleeve (7) are overlapped with each other, the top end of the upper sleeve (7) is connected with an output shaft through a coupler (5), the bottom end of the upper sleeve (7) is inserted into the rotary sleeve (9) and is rotatably connected with the rotary sleeve (9) through the upper bearing (11), the top end of the lower sleeve (13) is inserted into the rotary sleeve (9) and is rotatably connected with the rotary sleeve (9) through the lower bearing (12), the internal thread ring (10) is positioned between the upper sleeve (7) and the lower sleeve (13), the outer wall of the internal thread ring is connected with the inner wall of the rotary sleeve (9), and the top end of the screw rod (8) penetrates through the lower sleeve (13) from bottom to top;
the connecting rod assembly is positioned between the bottom of the lower sleeve (13) and the bottom of the screw rod (8) and comprises an upper connecting rod (14) and a lower connecting rod (15), the upper end and the lower end of the upper connecting rod (14) are respectively hinged with the bottom of the lower sleeve (13) and the top end of the lower connecting rod (15), the bottom end of the lower connecting rod (15) is hinged with the bottom of the screw rod (8), the hinged axes are parallel to each other and perpendicular to the axis of the screw rod (8), and when the bottom of the screw rod (8) is close to the bottom of the lower sleeve (13), the hinged part between the upper connecting rod (14) and the lower connecting rod (15) moves towards the direction far away from the axis of the screw rod (8);
the upper sleeve (7) is connected with the lower sleeve (13) through a sleeve connecting assembly.
2. The stirring apparatus for acetylglutamic acid production according to claim 1, characterized in that: section of thick bamboo coupling assembling includes connecting strip (16), lower connecting strip (17), bolt (18) and nut (19), it is the Z style of calligraphy to go up connecting strip (16) and lower connecting strip (17), and the one end of going up connecting strip (16) is connected with last sleeve (7), and the one end contact of its other end and lower connecting strip (17), the other end and lower sleeve (13) of lower connecting strip (17) are connected, the pole portion end of bolt (18) runs through behind connecting strip (16) and lower connecting strip (17) and nut (19) threaded connection.
3. The stirring apparatus for acetylglutamic acid production according to claim 2, characterized in that: the two cylinder connecting assemblies are symmetrical along the axis center of the screw (8).
4. The stirring apparatus for acetylglutamic acid production according to claim 1, characterized in that: the two connecting rod assemblies are symmetrical along the axis center of the screw (8).
5. The stirring apparatus for acetylglutamic acid production according to claim 1, characterized in that: the driving mechanism (2) is a pneumatic cylinder, the axis of the pneumatic cylinder is perpendicular to the base (1), and the bottom of the pneumatic cylinder is connected with the base.
6. The stirring apparatus for acetylglutamic acid production according to claim 5, characterized in that: the two sides of the driving mechanism (2) are respectively provided with a guide rod (20), the guide rods (20) are vertically fixed on the base (1), and the tops of the guide rods are movably penetrated through the mounting plate (3).
7. The stirring apparatus for acetylglutamic acid production according to any one of claims 1 to 6, characterized in that: the coupler (5) is an anchor ear type coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922100322.4U CN211274391U (en) | 2019-11-28 | 2019-11-28 | Agitating unit is used in acetylglutamic acid preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922100322.4U CN211274391U (en) | 2019-11-28 | 2019-11-28 | Agitating unit is used in acetylglutamic acid preparation |
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| Publication Number | Publication Date |
|---|---|
| CN211274391U true CN211274391U (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922100322.4U Expired - Fee Related CN211274391U (en) | 2019-11-28 | 2019-11-28 | Agitating unit is used in acetylglutamic acid preparation |
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| CN (1) | CN211274391U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976066A (en) * | 2021-10-20 | 2022-01-28 | 杭州三隆新材料有限公司 | Preparation system and method for improving heteropoly acid reaction activity |
-
2019
- 2019-11-28 CN CN201922100322.4U patent/CN211274391U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113976066A (en) * | 2021-10-20 | 2022-01-28 | 杭州三隆新材料有限公司 | Preparation system and method for improving heteropoly acid reaction activity |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 |
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