Slurry ratio double-confirmation device

By using weighing modules and connecting pipes on the metering tank and the mixing tank in the double confirmation device for slurry ratio, the precise feeding of the slurry is solved, and the problems of inaccurate slurry ratio and unstable quality in the prior art are improved, and product quality and production efficiency are improved.

CN222805119UActive Publication Date: 2025-04-29NINGDEYUAN INNOVATIVE MATERIALS CO LTD
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Patent Information

Application Number
CN202421788086.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-26
Publication Date
2025-04-29
Estimated Expiration
2034-07-26

AI Technical Summary

Technical Problem

In the prior art, the slurry ratio is inaccurate and the quality is unstable, which cannot meet the requirements of high-precision ratio and stable quality of lithium battery separator materials, resulting in waste of raw materials and product quality problems.

Method used

A double confirmation device for slurry ratio is designed, including setting up a weighing module on the metering tank and the mixing tank, and achieving precise feeding of the slurry by connecting the connecting pipes and bypass pipes of these tanks.

Benefits of technology

Through the dual confirmation device, the accuracy and stability of the slurry ratio are ensured, raw material waste is reduced, and product quality is improved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a double confirmation device for slurry ratio, which is characterized in that a first weighing module is arranged on a metering tank, a second weighing module is arranged on a stirring tank, the first weighing module and the second weighing module are respectively used for weighing slurry in the metering tank and the stirring tank, and a bypass pipeline with a smaller pipe diameter is arranged beside a first communication pipeline for connecting the metering tank and the stirring tank; when the weight of the slurry in the metering tank meets the requirement or the slurry is not heavy, the slurry enters the stirring tank from the metering tank through the first communicating pipeline, and the first weighing module and the second weighing module confirm the weight of the slurry in the metering tank and the weight of the slurry in the stirring tank respectively. When the slurry in the metering tank is in an overweight state, 90% of the slurry with the standard weight is pumped into the stirring tank through the first communication pipeline, then the bypass pipeline is opened, the discharging amount is reduced through the small pipe diameter, slow feeding is achieved to achieve accurate feeding, and when 99% of the slurry with the standard weight is reached, the second weighing module feeds back and confirms the weight in the stirring tank.
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Description

Technical Field

[0001] The utility model relates to the field of feed proportioning and weighing of slurry stirring, in particular to a slurry proportioning double confirmation device. Background Art

[0002] In the production process, slurry proportioning refers to the process of mixing different raw materials in a certain proportion to make the required slurry. The accuracy of slurry proportioning has an important impact on the quality and performance of the product.

[0003] The existing feeding method of lithium battery separator materials is tonnage barrels combined with direct extraction from a platform scale, which mainly relies on manual operation and experience, resulting in inaccurate proportions and unstable quality. Manual operation is easily affected by the operator's technical level and subjective factors, and cannot meet the high-precision proportioning and stable quality requirements of lithium battery separator materials, resulting in waste of raw materials and product quality problems. Utility Model Content

[0004] In view of the above problems, the present application provides a slurry ratio double confirmation device for solving the technical problems of inaccurate slurry ratio and unstable quality.

[0005] To achieve the above-mentioned objectives, in a first aspect, the present application provides a slurry ratio double confirmation device, comprising a raw material tank, a metering tank, a stirring tank and a first connecting pipe, wherein the raw material tank is used to store and supply slurry; the metering tank is connected to the raw material tank, and the metering tank is provided with a first weighing module, and the first weighing module is used to confirm the weight of the slurry in the metering tank; the stirring tank is connected to the metering tank, and the stirring tank is provided with a second weighing module, and the second weighing module is used to confirm the weight of the slurry in the metering tank; one end of the first connecting pipe is connected to the metering tank, and the other end of the first connecting pipe is connected to the stirring tank, a bypass pipe is provided on one side of the first connecting pipe, both ends of the bypass pipe are connected to the first connecting pipe, the diameter of the bypass pipe is smaller than the diameter of the first connecting pipe, a first pneumatic ball valve is provided between the connection between the first connecting pipe and the bypass pipe, and a second pneumatic ball valve is provided on the bypass pipe.

[0006] As an embodiment of the utility model, a first discharge port is provided at the bottom of the metering tank, a first feed port is provided at the top of the stirring tank, one end of the first connecting pipe is connected to the first discharge port, and the other end of the first connecting pipe is connected to the first feed port.

[0007] As an implementation manner of the utility model, a third pneumatic ball valve is further provided on the first connecting pipe, and the third pneumatic ball valve is arranged close to the first discharge port.

[0008] As an implementation manner of the utility model, the first weighing module includes a first balance and a second balance, the first balance is installed at one end of the measuring tank, and the second balance is installed at the other end of the measuring tank.

[0009] As an implementation mode of the utility model, a first mounting portion and a second mounting portion are provided on the measuring tank, the first balance is fixed on the first mounting portion, and the second balance is fixed on the second mounting portion.

[0010] As an implementation manner of the utility model, the second weighing module includes a third balance and a fourth balance, the third balance is installed on one side of the stirring tank, and the fourth balance is installed on the other side of the stirring tank.

[0011] As an implementation mode of the utility model, a third mounting part and a fourth mounting part are provided on the stirring tank, the third balance is fixed on the third mounting part, and the fourth balance is fixed on the fourth mounting part.

[0012] As an embodiment of the utility model, a second connecting pipe is provided between the metering tank and the raw material tank, one end of the second connecting pipe is connected to the bottom of the raw material tank, and the other end of the second connecting pipe is connected to the top of the metering tank.

[0013] As an implementation manner of the utility model, a diaphragm pump is provided on the second connecting pipe.

[0014] As an embodiment of the utility model, a fourth pneumatic ball valve and a fifth pneumatic ball valve are further provided on the second connecting pipe, the fourth pneumatic ball valve is located on one side of the diaphragm pump, and the fifth pneumatic ball valve is located on the other side of the diaphragm pump.

[0015] Different from the prior art, the technical solution of the present application is to set a first weighing module on the metering tank and a second weighing module on the stirring tank to weigh the slurry in the metering tank and the stirring tank respectively, and set a bypass pipe with a smaller diameter next to the first connecting pipe connecting the metering tank and the stirring tank. When the weight of the slurry in the metering tank meets the requirements or the slurry is underweight, the slurry enters the stirring tank from the metering tank through the first connecting pipe, and the first weighing module and the second weighing module confirm the weight of the slurry in the metering tank and the stirring tank respectively. When the slurry in the metering tank is in an overweight state, 90% of the standard weight is pumped into the stirring tank through the first connecting pipe, and then the bypass pipe is opened to reduce the amount of material discharged through the small diameter, so as to achieve slow feeding to achieve precise feeding. When the standard weight is 99%, the second weighing module feeds back and confirms the weight in the stirring tank.

[0016] The above-mentioned records related to the content of the utility model are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation method and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0018] In the drawings of the specification:

[0019] Figure 1 A schematic diagram of the structure of a slurry ratio double confirmation device for this application Figure 1 ;

[0020] Figure 2 A schematic diagram of the structure of a slurry ratio double confirmation device for this application Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the connection structure of a metering tank and a stirring tank of a slurry ratio double confirmation device in this application;

[0022] Figure 4 This is a schematic diagram of the structure of a metering tank of a slurry ratio double confirmation device in this application;

[0023] Figure 5 This is a schematic diagram of the structure of a stirring tank of a slurry ratio double confirmation device in the present application.

[0024] The reference numerals in the above drawings are described as follows:

[0025] 1. Raw material tank,

[0026] 2. Measuring tank, 21. First weighing module, 211. First balance, 212. Second balance, 213. First mounting part, 214. Second mounting part, 22. First discharge port,

[0027] 3. stirring tank, 31. second weighing module, 311. third balance, 312. fourth balance, 313. third mounting part, 314. fourth mounting part, 32. first feed port,

[0028] 4. first connecting pipe, 41. first pneumatic ball valve, 42. third pneumatic ball valve,

[0029] 5. Bypass pipeline, 51. Second pneumatic ball valve,

[0030] 6. Second connecting pipe, 61. Diaphragm pump, 62. Fourth pneumatic ball valve, 63. Fifth pneumatic ball valve. DETAILED DESCRIPTION

[0031] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0032] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0033] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0034] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, X and / or Y, which means: X exists, Y exists, and X and Y exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0035] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0036] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0037] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0038] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0039] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0040] According to some embodiments of the present application, please refer to Figures 1 to 5The present embodiment relates to a slurry proportion double confirmation device, comprising a raw material tank 1, a metering tank 2, a stirring tank 3 and a first connecting pipe 4, wherein the raw material tank 1 is used to store and supply slurry; the metering tank 2 is connected to the raw material tank 1, and a first weighing module 21 is provided on the metering tank 2, and the first weighing module 21 is used to confirm the weight of the slurry in the metering tank 2; the stirring tank 3 is connected to the metering tank 2, and a second weighing module 31 is provided on the stirring tank 3, and the second weighing module 31 is used to confirm the weight of the slurry in the metering tank 2; one end of the first connecting pipe 4 is connected to the metering tank 2, and the other end of the first connecting pipe 4 is connected to the stirring tank 3, a bypass pipe 5 is provided on one side of the first connecting pipe 4, both ends of the bypass pipe 5 are connected to the first connecting pipe 4, the diameter of the bypass pipe 5 is smaller than the diameter of the first connecting pipe 4, a first pneumatic ball valve 41 is provided between the connection between the first connecting pipe 4 and the bypass pipe 5, and a second pneumatic ball valve 51 is provided on the bypass pipe 5.

[0041] Before the slurry in the mixing tank 3 reaches 90% of the standard weight, the second pneumatic ball valve 51 of the bypass pipe 5 can be closed during use, and the first pneumatic ball valve 41 can be opened at the same time. The slurry will be continuously transported to the mixing tank 3 along the first connecting pipe 4. According to the weighing data fed back by the second weighing module 31, the slurry in the mixing tank 3 is between 90% and 100% of the standard weight. The first pneumatic ball valve 41 is closed, and the second pneumatic ball valve 51 is opened. The slurry enters the mixing tank 3 through the bypass pipe with a smaller diameter, and slow feeding is achieved until the weight data fed back by the second weighing module 31 reaches the standard, thereby improving the accuracy of feeding.

[0042] According to some embodiments of the present application, optionally, a first discharge port 22 is provided at the bottom of the metering tank 2, a first feed port 32 is provided at the top of the stirring tank 3, one end of the first connecting pipe 4 is connected to the first discharge port 22, and the other end of the first connecting pipe 4 is connected to the first feed port 32.

[0043] In this way, the slurry in the metering tank 2 enters the first connecting pipe 4 through the first discharge port 22 , and the slurry in the first connecting pipe 4 enters the stirring tank 3 through the first feed port 32 , so as to facilitate the transfer of the slurry in the metering tank 2 to the stirring tank 3 .

[0044] The metering tank 2 is fixed above the stirring tank 3. In some embodiments, the metering tank 2 is mounted on a mounting frame, which is suspended and fixed, or the mounting frame has a supporting component, which can be placed on a flat storage facility. In some embodiments, a fixing component is provided on the outside of the metering tank 2, and the fixing component cooperates with the external facility to fix the position of the metering tank 2.

[0045] The first discharge port 22 may protrude downward from the middle position of the bottom of the metering tank 2 body, and may be cylindrical, and its cross-sectional aperture matches the aperture of the interface at one end of the first connecting pipe 4. The first discharge port 22 may be provided with a snap-fit ​​structure docking with the first connecting pipe 4, and the first connecting pipe 4 may extend into the first discharge port 22, and the snap-fit ​​structure fixes the first connecting pipe 4 in the first discharge port 22. The top of the stirring tank 3 may be provided with a plurality of first feed ports 32, and the cross-section of the first feed port 32 may be circular, and the aperture of the first feed port 32 matches the aperture of the other end of the first connecting pipe, so that the first feed port 32 can dock with the first connecting pipe 4.

[0046] According to some embodiments of the present application, optionally, a third pneumatic ball valve 42 is further provided on the first connecting pipe 4 , and the third pneumatic ball valve 42 is arranged close to the first discharge port 22 .

[0047] In this way, opening the third pneumatic ball valve 42 can allow the slurry to flow from the first discharge port 22 to the first connecting pipe 4. When the weight of the slurry reaches the standard, the third pneumatic ball valve 42 can be closed to stop the slurry from flowing to the first connecting pipe 4, so that the technician can control the outflow of the slurry in the metering tank 2 at any time.

[0048] According to some embodiments of the present application, optionally, the first weighing module includes a first balance 211 and a second balance 212 , wherein the first balance 211 is installed at one end of the metering tank 2 , and the second balance 212 is installed at the other end of the metering tank 2 .

[0049] In this way, it is convenient to weigh the slurry in the metering tank 2 through the first balance 211 and the second balance 212 and feed back the weight.

[0050] According to some embodiments of the present application, optionally, a first mounting portion 213 and a second mounting portion 214 are provided on the metering tank 2 , the first balance 211 is fixed on the first mounting portion 213 , and the second balance 212 is fixed on the second mounting portion 214 .

[0051] In this way, it is convenient to fix the first balance 211 and the second balance 212 on the outer wall of the measuring tank 2 .

[0052] According to some embodiments of the present application, optionally, the second weighing module 31 includes a third balance 311 and a fourth balance 312 , the third balance 311 is installed on one side of the mixing tank 3 , and the fourth balance 312 is installed on the other side of the mixing tank 3 .

[0053] In this way, it is convenient to weigh the slurry in the stirring tank 3 through the third balance 311 and the fourth balance 312 and feed back the weight.

[0054] According to some embodiments of the present application, optionally, a third mounting portion 313 and a fourth mounting portion 314 are provided on the stirring tank 3 , the third balance 311 is fixed on the third mounting portion 313 , and the fourth balance 312 is fixed on the fourth mounting portion 314 .

[0055] In this way, it is convenient to fix the third balance 311 and the fourth balance 312 on the outer wall of the stirring tank 3 .

[0056] According to some embodiments of the present application, optionally, a second connecting pipe 6 is provided between the metering tank 2 and the raw material tank 1 , one end of the second connecting pipe 6 is connected to the bottom of the raw material tank 1 , and the other end of the second connecting pipe 6 is connected to the top of the metering tank 2 .

[0057] In this way, the slurry in the raw material tank 1 flows from the bottom into one end of the second connecting pipe 6, and the slurry in the second connecting pipe 6 enters the metering tank 2 from the other end, which facilitates the transfer of the slurry in the raw material tank 1 to the metering tank 2. In some embodiments, the raw material tank 1 is located above the metering tank 2, and the slurry in the raw material tank 1 flows to the second connecting pipe 6 under the action of gravity, wherein the bottom of the raw material tank 1 may be provided with a connection port, and the connection port matches one end of the second connecting pipe 6, and the top of the metering tank 2 may be provided with a plurality of feed ports, and the feed ports match the other end of the second connecting pipe 6, so that the second connecting pipe 6 is fixed between the raw material tank 1 and the metering tank 2. The raw material tank 1 can also be located below the metering tank 2, and at this time, the liquid needs to overcome gravity and flow from the lower part of the raw material tank 1 to the higher position of the metering tank 2, which can be achieved by increasing the pressure. A pressure vessel, compressed air or other boosting equipment can be used to transfer pressure to the liquid so that it can overcome gravity and flow to a high place.

[0058] According to some embodiments of the present application, optionally, a diaphragm pump 61 is provided on the second connecting pipe 6 .

[0059] In this way, the slurry can be pumped from the raw material tank 1 to the second connecting pipe 6 through the diaphragm pump 61, and input into the metering tank 2 through pressure. When the raw material tank 1 is at a low position and the metering tank 2 is at a high position, the slurry can overcome gravity under the action of the diaphragm pump 61 and flow from the raw material tank 1 to the metering tank 2.

[0060] According to some embodiments of the present application, optionally, a fourth pneumatic ball valve 62 and a fifth pneumatic ball valve 63 are further provided on the second connecting pipe 6 , the fourth pneumatic ball valve is located on one side of the diaphragm pump 61 , and the fifth pneumatic ball valve 63 is located on the other side of the diaphragm pump 61 .

[0061] In this way, when the diaphragm pump 61 is in normal operation, the fourth pneumatic ball valve 62 and the fifth pneumatic ball valve 63 are opened at the same time, and the slurry in the raw material tank 1 can be transferred to the metering tank 2 under the action of the diaphragm pump 61. When the diaphragm pump 61 is damaged, the fourth pneumatic ball valve 62 and the fifth pneumatic ball valve 63 are closed at the same time to facilitate the maintenance or replacement of the diaphragm pump 61.

[0062] Different from the prior art, the technical solution of the present application is to set a first weighing module on the metering tank 2 and a second weighing module 31 on the stirring tank 3, respectively weigh the slurry in the metering tank 2 and the stirring tank 3, and set a bypass pipe 5 with a smaller diameter next to the first connecting pipe 4 connecting the metering tank 2 and the stirring tank 3. When the weight of the slurry in the metering tank 2 meets the requirements or the slurry is underweight, the slurry enters the stirring tank 3 from the metering tank 2 through the first connecting pipe, and the first weighing module 21 and the second weighing module 31 respectively confirm the weight of the slurry in the metering tank 2 and the stirring tank 3. When the slurry in the metering tank 2 is in an overweight state, 90% of the standard weight is pumped into the stirring tank 3 through the first connecting pipe 4, and then the bypass pipe 5 is opened to reduce the amount of feeding through the small diameter, so as to achieve slow feeding to achieve precise feeding. When the standard weight is 99%, the second weighing module 31 feedbacks and confirms the weight in the stirring tank 3.

[0063] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A slurry ratio double confirmation device, characterized in that: include: A raw material tank, which is used to store and supply slurry; A metering tank, the metering tank is connected to the raw material tank, and a first weighing module is provided on the metering tank, and the first weighing module is used to confirm the weight of the slurry in the metering tank; A stirring tank, the stirring tank is connected to the metering tank, the stirring tank is provided with a second weighing module, and the second weighing module is used to confirm the weight of the slurry in the metering tank; as well as A first communicating pipe, one end of which is connected to the metering tank, the other end of which is connected to the stirring tank, a bypass pipe is provided on one side of the first communicating pipe, both ends of which are connected to the first communicating pipe, the diameter of the bypass pipe is smaller than the diameter of the first communicating pipe, a first pneumatic ball valve is provided between the connection between the first communicating pipe and the bypass pipe, and a second pneumatic ball valve is provided on the bypass pipe.

2. A slurry ratio double confirmation device according to claim 1, characterized in that: The bottom of the metering tank is provided with a first discharge port, the top of the stirring tank is provided with a first feed port, one end of the first communicating pipe is connected to the first discharge port, and the other end of the first communicating pipe is connected to the first feed port.

3. A slurry ratio double confirmation device according to claim 2, characterized in that: A third pneumatic ball valve is also provided on the first connecting pipe, and the third pneumatic ball valve is arranged close to the first discharge port.

4. A slurry ratio double confirmation device according to claim 1, characterized in that: The first weighing module includes a first balance and a second balance. The first balance is installed at one end of the measuring tank, and the second balance is installed at the other end of the measuring tank.

5. A slurry ratio double confirmation device according to claim 4, characterized in that: The metering tank is provided with a first mounting portion and a second mounting portion, the first balance is fixed on the first mounting portion, and the second balance is fixed on the second mounting portion.

6. A slurry ratio double confirmation device according to claim 1, characterized in that: The second weighing module includes a third balance and a fourth balance. The third balance is installed on one side of the stirring tank, and the fourth balance is installed on the other side of the stirring tank.

7. A slurry ratio double confirmation device according to claim 6, characterized in that: The stirring tank is provided with a third mounting part and a fourth mounting part, the third balance is fixed on the third mounting part, and the fourth balance is fixed on the fourth mounting part.

8. A slurry ratio double confirmation device according to claim 1, characterized in that: A second connecting pipe is provided between the metering tank and the raw material tank, one end of the second connecting pipe is connected to the bottom of the raw material tank, and the other end of the second connecting pipe is connected to the top of the metering tank.

9. A slurry ratio double confirmation device according to claim 8, characterized in that: The second connecting pipe is provided with a diaphragm pump.

10. A slurry ratio double confirmation device according to claim 9, characterized in that: The second connecting pipe is also provided with a fourth pneumatic ball valve and a fifth pneumatic ball valve. The fourth pneumatic ball valve is located on one side of the diaphragm pump, and the fifth pneumatic ball valve is located on the other side of the diaphragm pump.