CN211636184U - Device for producing anti-skinning agent - Google Patents
Device for producing anti-skinning agent Download PDFInfo
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- CN211636184U CN211636184U CN201922392541.4U CN201922392541U CN211636184U CN 211636184 U CN211636184 U CN 211636184U CN 201922392541 U CN201922392541 U CN 201922392541U CN 211636184 U CN211636184 U CN 211636184U
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- stirring
- skinning agent
- cauldron
- producing
- pivot
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- 238000003756 stirring Methods 0.000 claims abstract description 107
- 238000004519 manufacturing process Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 abstract description 23
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 29
- 239000006185 dispersion Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000002156 mixing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model relates to a technical field is made to coating and printing ink additive, especially relates to a device for producing anti-skinning agent. The utility model discloses anti-skinning agent production facility, including the production cauldron, the production cauldron includes that the cauldron body, lid locate lid, the agitating unit that are equipped with the feed inlet on the cauldron body and by the chamber that holds that cauldron body and lid enclose, the high H of the internal side wall of cauldron and the ratio that holds cavity diameter an are: 1.84-2.03; agitating unit is including passing the lid and stretching into the pivot that holds the intracavity and locating a plurality of stirring rakes that hold intracavity pivot both sides, and at least one stirring rake surface is equipped with the recess along its length direction, the recess can let the material of pouring into from the feed inlet fall into it in. The production equipment greatly improves the production efficiency, is easy to stir, and the prepared anti-skinning agent has good quality.
Description
Technical Field
The utility model relates to a technical field is made to coating and printing ink additive, especially relates to a device for producing anti-skinning agent.
Background
At present, the production equipment for producing the anti-skinning agent is not fine in coordination dispersion due to the fact that a production kettle is thick and small in height and a stirring device cannot be good, when the anti-skinning agent is produced, raw materials quickly reach the bottom of a container, the raw materials are easy to cake, the heating speed is low, the speed is very low when the anti-skinning agent is produced, and the production efficiency is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a device for producing anti-skinning agent that production speed is fast and can reduce the raw materials and put into production facility and become the bold condition.
In order to realize the technical effect of the utility model, adopt following technical scheme to realize:
the utility model provides a device for producing anti-skinning agent, includes the production cauldron, the production cauldron includes that the cauldron body, lid locate lid, the agitating unit that are equipped with the feed inlet on the cauldron body and by the cauldron body and the lid enclose the chamber that holds, the high H of the internal side wall of cauldron and the ratio that holds chamber diameter a are: 1.84-2.03; agitating unit is including passing the lid and stretching into the pivot that holds the intracavity and locating a plurality of stirring rakes that hold intracavity pivot both sides, has at least one stirring rake surface to be equipped with the recess along its length direction, the recess can let the raw materials of pouring into from the feed inlet fall into it in.
As a further improvement, the inner side wall of the kettle body is enclosed into a cylinder shape; the stirring rake rotates with the pivot to be connected, direction of rotation when the stirring rake is rotatory is perpendicular with the direction of rotation when the pivot is rotatory (or the plane of rotation when the stirring rake is rotatory is perpendicular with the plane of rotation when the pivot is rotatory).
As a further improvement, the stirring paddle comprises a stirring shaft connected with the rotating shaft and a plurality of plate bodies fixedly arranged outside the stirring shaft, the number of the grooves is 3, and the grooves are formed by surrounding the stirring shaft and two adjacent plate bodies or by surrounding two adjacent plate bodies.
As a further improvement, the length direction of the stirring paddle is perpendicular to the axis of the rotating shaft.
As a further improvement, the stirring paddles comprise two stirring paddles which are respectively correspondingly arranged on two sides of the rotating shaft, and the depth of the stirring paddle groove arranged on one side of the rotating shaft is deeper than the depth of the stirring paddle groove correspondingly arranged on the other side of the rotating shaft; the number of the stirring paddle grooves arranged on one side of the rotating shaft is more than that of the stirring paddle grooves correspondingly arranged on the other side of the rotating shaft.
As a further improvement, the kettle body is further fixedly provided with a fixing part, and the fixing part is fixedly connected or rotatably connected with the bottom of the stirring device.
As a further improvement, the device for producing the anti-skinning agent further comprises a heating pipe and a cooling pipe, wherein the heating pipe penetrates through the kettle body and is tightly attached to the inner wall of the kettle body, and the cooling pipe is arranged on the outer wall of the kettle body.
As a further improvement, the ratio of the distance c between the horizontal plane where the lowest point of the bottom in the kettle body is located and the horizontal plane where the lowest point of the inner side wall of the kettle body is located to H is as follows: 0-0.15.
The utility model discloses beneficial effect as follows:
1) the utility model discloses because the high H of cauldron internal side wall and the ratio that holds chamber diameter a are: 1.84-2.03, and then when the material was poured into from the feed inlet that sets up on the lid and is held the intracavity, compare in prior art and be used for producing the equipment of anti-skinning agent, because H is longer, and then prolonged the decline time of material in holding the intracavity, not only make material heating time longer, and dispersion time is also longer, and then very big improvement production efficiency, avoided prior art to add the material still need carry out the process of longer time heating and stirring to the material after.
2) During production, because the stirring rake surface is equipped with the recess along its length direction, can let the raw materials one section dwell time on the recess when holding the intracavity in the raw materials is poured into, cushion, and then make the raw materials dispersion more easily, need heat when the anti-skinning agent of general production, set up like this and enable the raw materials further to preheat, especially when the heating pipe is located the cauldron body lateral wall, realization heating that can be easier.
3) During production, as the H is longer, the diameter a of the accommodating cavity is smaller, the contact area between the raw material and air is reduced, further, the oxidative yellowing of the raw material is reduced, the product quality is improved, and particularly, when the raw material needs to be produced in a vacuum environment, the raw material is improved more obviously.
Drawings
Fig. 1 is a schematic structural view of the production equipment of the present invention.
Fig. 2 is a schematic view of the connection structure of the stirring paddle of the present invention when the stirring paddle can rotate relative to the rotating shaft.
Wherein, 1 is a production kettle; 2 is a rotating shaft; 3 is a stirring paddle; 4 is a heating pipe; 5 is a cooling pipe; 6 is a cold water outlet of the cooling pipe; 7 is a cold water inlet of the cooling pipe; 8 is a hot water outlet of the heating pipe; 9 is a hot water inlet of the heating pipe; 10 is a feed inlet; 11 is the side wall of the kettle body; 12 is a cover body; 13 is the bottom of the kettle body; 14 is a fixed part; 15 is a housing chamber; 16 is a groove; 17 is a stirring plate; and 18 is a driving device.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 and fig. 2, a device for producing an anti-skinning agent comprises a production kettle 1, wherein the production kettle 1 comprises a kettle body, a cover body 12 covering the kettle body and provided with a feed inlet 10, a stirring device and a containing cavity 15 enclosed by the kettle body and the cover body 12, and the ratio of the height H of the inner side wall of the kettle body to the diameter a of the containing cavity 15 is as follows: 1.84-2.03; agitating unit is including passing lid 12 and stretching into the pivot 2 that holds in the chamber 15 and locating a plurality of stirring rakes 3 that hold 2 both sides of pivot in the chamber 15, and at least one stirring rake surface is equipped with recess 16 along its length direction, recess 16 can let the material (or the raw materials, the raw materials that are used for producing the anti-skinning agent generally) of pouring into from the feed inlet fall into it.
The utility model discloses because the high H of cauldron internal side wall and the ratio that holds chamber diameter a are: 1.84-2.03, and then when the material is poured into from the feed inlet 10 that sets up on lid 12 and is holding in the chamber 15, compare in the equipment that prior art was used for producing anti-skinning agent, because H is longer, and then prolonged the decline time of material in holding the intracavity, not only make material heating time longer, and dispersion time is also longer, and then very big improvement production efficiency, avoided prior art to add the material after still need carry out the process of longer time heating and stirring to the material.
During production, because the surface of the stirring paddle 3 is provided with the groove 16 along the length direction, the raw materials can stay in the groove 16 for a period of time when the materials (or the raw materials) are poured into the accommodating cavity 15, the raw materials are buffered, and then the raw materials are more easily dispersed, the raw materials are required to be heated during the general production of the anti-skinning agent, the raw materials can be further preheated, and particularly, when the heating pipe is arranged on the side wall of the kettle body, the heating can be more easily realized.
During production, as the H is longer, the diameter a of the accommodating cavity is smaller, the contact area between the material and air is reduced (under the condition that the material is the same), further, the oxidation yellowing of the material is reduced, the quality of the product is improved, and particularly, when the material needs to be produced in a vacuum environment, the improvement on the quality of the product is more obvious.
Meanwhile, the H is not too long, so that the machine cost is not wasted.
Preferably, the inner side wall of the kettle body is enclosed into a cylinder shape; the stirring rake rotates with the pivot to be connected, direction of rotation when the stirring rake is rotatory is perpendicular with the direction of rotation when the pivot is rotatory.
The rotation direction of the stirring paddle during rotation is perpendicular to the rotation direction of the rotating shaft 2 during rotation, and can be that the rotation direction of the rotating shaft (or the rotating plane) is horizontal, and the rotation direction of the stirring paddle (or the rotating plane) is vertical.
The stirring device may further comprise a driving device 18 for driving the stirring blade to rotate, and the stirring blade is driven to rotate by the driving device 18.
In figure 1, the stirring paddle is fixedly connected with the rotating shaft. When the stirring paddle is required to rotate relative to the rotating shaft, the connection condition of the stirring paddle and the rotating shaft in the figure 1 can be changed into the connection condition of the stirring paddle and the rotating shaft in the figure 2.
The inner side wall of the kettle body is enclosed into a cylinder. This saves more space and material.
Because H is longer, the raw materials that fall into the lower part are difficult for stirring, when the stirring rake rotates for the pivot, can be easier with the stirring of the following material of stirring rake come, realize easier dispersion.
Certainly, the stirring rake is connected with the pivot rotation, also can be that the pivot is equipped with the body of rod, and the stirring rake cover is located outside the body of rod, can rotate for the body of rod, and when the pivot drove the stirring rake and rotates, the stirring rake was rotatory under the effect of material. At this moment, the material in the recess can be faster from the recess dispersion, and then improves dispersion speed.
Preferably, the stirring rake includes the (mixing) shaft of being connected with the pivot and the fixed polylith plate body of locating outside the (mixing) shaft, the recess is for can be 3, the recess encloses into or encloses into such setting by two adjacent plate bodies 17 by (mixing) shaft and two adjacent plate bodies 17 for the raw materials not only can be followed the groove opening part and moved out and can also be followed the recess tip and moved out, realization dispersion that can be better. The stirring shaft and one end of the plate body far away from the rotating shaft can be flush.
Three grooves 16 arranged on one stirring paddle can be uniformly distributed on the surface of the stirring paddle. The plate body may be rectangular parallelepiped.
Preferably, the length direction of the stirring paddle 3 is perpendicular to the axis of the rotating shaft. This makes it easier to achieve uniform dispersion and heating. The longitudinal direction of the paddle 3 is the left-right direction as shown in fig. 1.
Preferably, the stirring paddles comprise two stirring paddles 3 which are respectively and correspondingly arranged on two sides of the rotating shaft 2, and the depth of the groove of the stirring paddle 3 arranged on one side of the rotating shaft is deeper than the depth of the groove of the stirring paddle correspondingly arranged on the other side of the rotating shaft 2; the number of the stirring paddle grooves arranged on one side of the rotating shaft 2 is more than that of the stirring paddle grooves correspondingly arranged on the other side of the rotating shaft 2.
The utility model discloses in, correspond two stirring rakes of locating 2 both sides of pivot and refer to locate the horizontal plane at two stirring rake minimum places and the horizontal plane at peak place of 2 both sides of pivot flush or be close to flush.
Set up like this, at the stirring in-process, locate the recess of pivot one side and can gather the raw materials, and another stirring rake can be better gather the cutting and the dispersion to the raw materials that gathers for the raw materials dispersion is more thorough, has further accelerated the speed of production. Especially when the stirring paddle is fixedly connected with the rotating shaft, the effect is more obvious.
Preferably, the still body is fixed and is equipped with fixed part 14, fixed part 14 and agitating unit bottom fixed connection or rotation are connected. During production, because H is longer, for the stirring, the ratio that general agitating unit also set up is longer, and this just makes whole machine stirring difficult, and the noise is big, has brought the inconvenience for production, passes through the fixed part with agitating unit bottom and cauldron body bottom and is connected the back, has not only reduced the noise, and the stirring is easy moreover, has still reduced the damage of machine simultaneously. The rotating shaft may be rotatably provided on the fixing portion and may be rotatable with respect to the fixing portion.
Preferably, the number of paddles provided on each side of the shaft 2 is 4. The quantity that the stirring rake of 2 every sides of pivot was located to the device production cauldron that prior art was used for producing anti-skinning agent is 2-3, stirs thoroughly inadequately, the utility model discloses set up 4 for the raw materials is difficult for the caking, very big improvement production efficiency.
Preferably, the device for producing the anti-skinning agent further comprises a heating pipe 4 and a cooling pipe 5, wherein the heating pipe 4 penetrates through the kettle body and is tightly attached to the inner wall of the kettle body, and the cooling pipe 5 is arranged on the outer wall of the kettle body. The production kettle heating pipe for producing the anti-skinning agent is arranged on the outer wall of the heating kettle, so that the heating is slow, when the production kettle heating pipe is arranged on the inner wall, the heating is faster, the time can be saved, and the production kettle heating pipe is particularly suitable for producing the anti-skinning agent. FIG. 1 is a cold water outlet 6 of the cooling pipe; 7 is a cold water inlet of the cooling pipe; 8 is a hot water outlet of the heating pipe; and 9 is a hot water inlet of the heating pipe.
Preferably, the ratio of the distance c between the horizontal plane where the lowest point of the bottom in the kettle body is located and the horizontal plane where the lowest point of the inner side wall of the kettle body is located to H is as follows: 0-0.15. By the arrangement, raw materials are stirred more easily and are not easy to agglomerate.
Preferably, the ratio of the shortest distance b between one end of the stirring paddle 3 far away from the rotating shaft 2 and the inner side wall of the kettle body to H is as follows: 0.11-0.12 (i.e. b is the closest distance from the closest point of one end of the stirring paddle 3 far away from the rotating shaft 2 to the side wall). By the arrangement, raw materials are stirred more easily and are not easy to agglomerate.
Preferably, the bottom in the kettle body is spherical. The spherical surface is beneficial to stirring, so that the raw materials are easy to disperse.
Preferably, the fixing part is arranged in the accommodating cavity and is detachably and fixedly connected with the stirring device.
The stirring device can be detached and fixedly connected, so that the stirring device can be conveniently taken out for cleaning or maintenance. The rotating shaft 2 of the stirring device generally extends into or passes through the fixed part, and the stirring device can rotate relative to the fixed part to realize the rotating connection.
Preferably, H is: 2950-3250 mm; a is: 1600 mm; b is as follows: 450 mm; c is 400 mm.
The anti-skinning agent of the utility model can be anti-skinning agent for printing ink HS02 sold under the trade name of core chemistry.
Adopt the embodiment 1 of the utility model provides a size and structure set up, can obviously improve production efficiency, can be so that the production that needs 6 hours to accomplish originally, process the utility model discloses embodiment 1's transformation can realize accomplishing in 30-60 minutes, has greatly improved production efficiency, has apparent progress.
In addition, the stirring device of this embodiment is driven to rotate by a driving component, for example, the driving component may be a motor, and the motor may be connected with the rotating shaft to drive the stirring device to rotate.
Meanwhile, the driving device for driving the stirring paddle to rotate can also be a motor (the rotating shaft can be cylindrical) arranged in the rotating shaft, and the motor is started to drive the stirring shaft to rotate so as to drive the whole stirring paddle to rotate.
The motor and the stirring shaft can be rotationally connected through a worm and gear, namely the motor drives the worm to rotate, the worm drives the worm gear to rotate, and then the stirring shaft penetrating through the worm gear is driven to rotate.
The motor can also be arranged at the upper part outside the rotating shaft to drive the worm to rotate, and the worm drives the turbine to rotate so as to drive the stirring shaft penetrating through the turbine to rotate. When the rotating shaft does not rotate and is static, the stirring paddle rotates, and when the rotating shaft rotates, the stirring paddle does not rotate.
Of course, the motor is activated under the drive of the power source. When the shaft is not rotating, the motor may not be connected to a power source.
Example 2
The structure is the same as that of embodiment 1 except that the stirring paddle 3 is fixedly connected with the rotating shaft 2 and no driving device is arranged. At this moment, agitating unit includes the (mixing) shaft with pivot fixed connection and fixes the polylith plate body of locating outside the (mixing) shaft, the recess can be selected to 3 (evenly distributed outside the stirring rake), the recess is enclosed by (mixing) shaft and two adjacent plate bodys or is enclosed by two adjacent plate bodys, as shown in fig. 1.
Adopt the embodiment 2 of the utility model provides a size and structure set up, can obviously improve production efficiency, can be so that the production that needs 6 hours to accomplish originally, process the utility model discloses a reform transform, can realize accomplishing in 50-90 minutes, greatly improved production efficiency, have apparent progress.
It should be noted that, the accommodating cavity diameter a of the present invention refers to the maximum diameter of the cylinder whose axis is parallel to the vertical direction when the production kettle is vertically placed (the position shown in fig. 1 is placed), for example, when the kettle sidewall is cylindrical (the kettle sidewall encloses a cylinder), the accommodating cavity diameter a refers to the inner diameter of the cylinder.
The horizontal plane, vertical, up and down of the utility model all refer to the horizontal plane, vertical, up and down when the device is placed on the horizontal plane as shown in fig. 1.
However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications described in the claims and the specification of the present invention are included in the scope of the present invention. In addition, the abstract and the title are provided for assisting the search of patent documents and are not intended to limit the scope of the present invention.
Claims (8)
1. The utility model provides a device for producing anti-skinning agent, includes the production cauldron, the production cauldron includes that the cauldron body, lid locate lid, the agitating unit that are equipped with the feed inlet on the cauldron body and by the cauldron body and the lid enclose the chamber that holds that becomes, its characterized in that, the high H of the internal side wall of cauldron and the ratio that holds chamber diameter a are: 1.84-2.03; agitating unit is including passing the lid and stretching into the pivot that holds the intracavity and locating a plurality of stirring rakes that hold intracavity pivot both sides, has at least one stirring rake surface to be equipped with the recess along its length direction, the recess can let the material of pouring into from the feed inlet fall into it in.
2. The apparatus for producing an anti-skinning agent of claim 1, wherein the inner side wall of the kettle body is formed into a cylindrical shape; the stirring rake rotates with the pivot to be connected, direction of rotation when the stirring rake is rotatory is perpendicular with the direction of rotation when the pivot is rotatory.
3. The apparatus for producing an anti-skinning agent according to claim 1, wherein the stirring paddle comprises a stirring shaft connected to the rotating shaft and a plurality of plate bodies fixed outside the stirring shaft, and the number of the grooves is 3, and the grooves are surrounded by the stirring shaft and two adjacent plate bodies or two adjacent plate bodies.
4. The apparatus for producing an anti-skinning agent according to claim 1, wherein the paddle has a length direction perpendicular to the axis of the rotating shaft.
5. The apparatus for producing an anti-skinning agent according to claim 3, wherein the stirring paddles comprise two stirring paddles correspondingly disposed at both sides of the rotation shaft, respectively, and the depth of the groove of the stirring paddle disposed at one side of the rotation shaft is deeper than the depth of the groove of the stirring paddle correspondingly disposed at the other side of the rotation shaft; the number of the stirring paddle grooves arranged on one side of the rotating shaft is more than that of the stirring paddle grooves correspondingly arranged on the other side of the rotating shaft.
6. The apparatus for producing an anti-skinning agent according to claim 2, wherein the kettle body is further fixedly provided with a fixing portion, and the fixing portion is fixedly or rotatably connected with the bottom of the stirring device.
7. The apparatus for producing an anti-skinning agent of claim 2, further comprising a heating pipe passing through the kettle body and closely attached to the inner wall of the kettle body, and a cooling pipe provided on the outer wall of the kettle body.
8. The apparatus for producing an anti-skinning agent according to claim 2, wherein the ratio of the distance c to H between the level of the lowest point of the bottom in the autoclave body and the level of the lowest point of the inner side wall of the autoclave body is: 0-0.15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922392541.4U CN211636184U (en) | 2019-12-26 | 2019-12-26 | Device for producing anti-skinning agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922392541.4U CN211636184U (en) | 2019-12-26 | 2019-12-26 | Device for producing anti-skinning agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211636184U true CN211636184U (en) | 2020-10-09 |
Family
ID=72699698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922392541.4U Active CN211636184U (en) | 2019-12-26 | 2019-12-26 | Device for producing anti-skinning agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211636184U (en) |
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2019
- 2019-12-26 CN CN201922392541.4U patent/CN211636184U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room b516, No.10 and 12, Tianhui Road, Tianhe District, Guangzhou, Guangdong 510000 Patentee after: Guangdong core new materials Co.,Ltd. Address before: 510520 3rd floor, building 2, industrial building, No.26 Yuxing Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: Guangzhou core new material technology Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A device for producing anti caking agent Effective date of registration: 20210610 Granted publication date: 20201009 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: Guangdong core new materials Co.,Ltd. Registration number: Y2021980004635 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20201009 Pledgee: Bank of China Limited by Share Ltd. Guangzhou Panyu branch Pledgor: Guangdong core new materials Co.,Ltd. Registration number: Y2021980004635 |