Pretreatment device for measuring active metal elemental iron in lithium iron phosphate
By designing a sample inlet funnel and an acid addition system for the pretreatment device, the problems of loss and error during the sample addition process were solved, and the accurate measurement of active elemental iron in lithium iron phosphate was achieved.
Patent Information
- Application Number
- CN202422920712.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In existing technologies for detecting active elemental iron in lithium iron phosphate, the sample addition process is prone to sample loss and large measurement errors, leading to inaccurate measurements.
A pretreatment device including a sample inlet funnel and an acid addition system was designed. By controlling the opening and closing of the sample inlet funnel and the connecting tube, quantitative addition of samples and precise injection of acid can be achieved, reducing human operation errors.
This effectively avoids sample loss and measurement errors during the transfer process, improving the accuracy and efficiency of the measurement.
Smart Images
Figure CN223526371U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lithium iron phosphate detection auxiliary technical field, specifically, it is a kind of pretreatment device for determining active metal elemental iron in lithium iron phosphate. BACKGROUND
[0002] At present, the active metal elemental iron in lithium iron phosphate material is mainly detected by laboratory chemical reaction, mainly by dilute acid reaction method.This process mainly adds dilute acid to lithium iron phosphate material, and the active metal in dilute acid and material reacts to produce hydrogen, and the active metal content in lithium iron phosphate is obtained by measuring hydrogen content.
[0003] The main process of the pretreatment of this method is: a certain amount of lithium iron phosphate is weighed into a flask, the flask is closed, a certain amount of gas is extracted, and then dilute acid is added for reaction, and the reaction is mixed.
[0004] Advantages: the pretreatment method can make the active metal elemental iron in lithium iron phosphate material react quickly with dilute acid.
[0005] Disadvantages: the pretreatment method is a traditional manual operation, and the process error caused by personnel participation is large and time-consuming. INVENTION CONTENTS
[0006] The utility model aims at providing a kind of pretreatment device for determining active metal elemental iron in lithium iron phosphate, to solve the problems that sample is easily lost in the process of adding sample and other reasons cause large measurement error.
[0007] In order to solve the above problems, the utility model adopts the following technical means:
[0008] A kind of pretreatment device for determining active metal elemental iron in lithium iron phosphate, comprising:
[0009] Sample inlet funnel, including feeding hopper body and storage hopper body, the storage hopper body is communicated with the feeding hopper body, and the communication port of the storage hopper body and the feeding hopper body is equipped with opening and closing device;
[0010] Acid liquid adding system, including processing box, the inside of the processing box is constructed with storage liquid chamber located in upper portion and control chamber located in lower portion by partition, the bottom surface of the processing box is constructed with first insertion channel, second insertion channel and third insertion channel communicated with the control chamber respectively, the control chamber is equipped with air extraction device, the air inlet end of the air extraction device extends into the first insertion channel, the control chamber is also constructed with connecting pipe, the top end of the connecting pipe is communicated with the storage liquid chamber, the bottom end of the connecting pipe extends into the second insertion channel, and the connecting pipe is installed with switch device.
[0011] As preferred, the bottom end of the feeding hopper body is a plane structure.
[0012] Further, the connecting surface of the storage hopper body and the feeding hopper body is provided as a plane structure, the opening and closing device comprises a disc provided at the top pipe opening of the feeding hopper body, and a rotating rod horizontally arranged at the bottom side of the storage hopper body, one end of the rotating rod horizontally extends into the feeding hopper through the bottom surface of the storage hopper body and is connected with the side wall of the disc, the disc is coaxially arranged with the feeding hopper, and the cross-sectional area of the disc is the same as the area of the top pipe opening of the feeding hopper.
[0013] Further, the first insertion channel, the second insertion channel and the third insertion channel are arranged in a linear direction.
[0014] Further, the inner walls of the first insertion channel, the second insertion channel and the third insertion channel are all provided with rubber sealing rings.
[0015] Further, the communication pipe is in a soft pipe structure, and the switch device is an electric control extrusion kneading mechanism for clamping and kneading the communication pipe.
[0016] The utility model discloses in the process of using, has the following beneficial effects:
[0017] Firstly, the sample funnel is used for feeding, the sample funnel is placed on the electronic scale, then the lithium iron phosphate sample to be detected is placed in the storage hopper body in the closed state of the opening and closing device, after measurement, the sample funnel is directly transferred, the feeding hopper of the sample funnel is inserted into the bottle opening of the three-necked flask, the opening and closing device is opened, and the lithium iron phosphate material is allowed to freely fall into the three-necked flask, and the sample remaining in the storage hopper body can be cleaned by a brush, so that the sample falls into the feeding hopper. In this way, the sample can be effectively avoided to be a solid powder sample, the sample weight is large, when being transferred to the flask, since the bottle opening of the three-necked flask is small, the sample is easy to be lost when being transferred by using ordinary weighing paper, and the sample is easy to be left on the weighing paper, so that the sample is lost, and the measurement accuracy is affected.
[0018] Then, the three bottle openings of the three-necked flask after feeding are respectively inserted into the first insertion channel, the second insertion channel and the third insertion channel, the gas in the three-necked flask is quantitatively extracted from the first insertion channel by controlling the air extraction device in the control chamber, so that the gas in the bottle opening of the flask is extracted after being closed, and the fixed volume of the gas is effectively avoided. Since the air extraction needle cylinder is used, the volume cannot be guaranteed to be consistent, and different operators have errors, so that the measurement structure is affected.
[0019] Moreover, by arranging the communication pipe and controlling the opening and closing of the switch device, the acid liquid can be quantitatively input into the three-necked flask, and the acid amount error caused by manual acid injection is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS
[0020] Fig. 1 It is the structure schematic drawing of the sample inlet funnel of the utility model.
[0021] Fig. 2 It is the structure schematic drawing of the sample inlet funnel of the utility model.
[0022] Fig. 3 It is the structure schematic drawing of the acid liquid adding system of the utility model.
[0023] 1 - feed hopper body, 2 - storage hopper body, 3 - treatment box, 4 - partition, 5 - liquid storage cavity, 6 - control chamber, 7 - second insertion channel, 8 - third insertion channel, 9 - air extraction device, 10 - communication pipe, 11 - round piece, 12 - rotating rod, 13 - switch device, 14 - first insertion channel. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.
[0026] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.
[0027] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0028] In the description of the utility model, it needs to explain that, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the utility model product is used, or the orientation or positional relationship commonly understood by the person skilled in the art, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, structure and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
[0029] In the description of the utility model, it also needs to explain that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connect", "connect" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0030] Please refer to Figs. 1 to 3 As shown in the figure, a kind of pretreatment device for determining active metal elemental iron in lithium iron phosphate, comprising:
[0031] Sample funnel, including feed hopper body 1 and storage hopper body 2, the storage hopper body 2 is communicated with the feed hopper body 1, and the communication port of the storage hopper body 2 and the feed hopper body 1 is equipped with opening and closing device;
[0032] Acid liquid adding system, including processing box 3, the processing box 3 is constructed with storage liquid chamber 5 located in upper portion and control chamber 6 located in lower portion in the inside through partition 4, the bottom surface of the processing box 3 is constructed with first insertion channel 14, second insertion channel 7 and third insertion channel 8 communicated with the control chamber 6 respectively, the control chamber 6 is equipped with air extraction device 9, the air inlet end of the air extraction device 9 is inserted into the first insertion channel 14, the control chamber 6 is also constructed with communication pipe 10, the top end of the communication pipe 10 is communicated with the storage liquid chamber 5, the bottom end of the communication pipe 10 is inserted into the second insertion channel 7, and the communication pipe 10 is installed with switch device 13.
[0033] In this way, first, the sample is added through the sample funnel, the sample funnel is placed on the electronic scale, then the lithium iron phosphate sample to be detected is placed in the storage hopper 2 under the closed state of the opening and closing device, after the measurement is completed, the sample funnel is directly transferred, the feeding hopper 1 of the sample funnel is inserted into the bottle mouth of the three-necked flask, the opening and closing device is opened, and the lithium iron phosphate material is allowed to freely fall into the three-necked flask. A small amount of sample remaining in the storage hopper 2 can be cleaned by a brush to fall into the feeding hopper 1. In this way, it can effectively avoid the case that the sample is a solid powder sample, the sample weight is large, and when the sample is transferred to the flask, the sample is easily lost during the transfer using ordinary weighing paper, and the sample is easily left on the weighing paper, thereby causing the sample to be missing and affecting the measurement accuracy.
[0034] Then, the three bottle mouths of the feeding completed three-necked flask are respectively inserted into the first insertion channel 14, the second insertion channel 7 and the third insertion channel 8, and the gas in the three-necked flask is quantitatively extracted from the first insertion channel 14 through the air extraction device 9 in the control chamber 6, thereby effectively avoiding the case that after the bottle mouth of the flask is closed, a fixed volume of gas is extracted, and the volume cannot be guaranteed to be consistent due to the use of the air extraction needle cylinder, and the operation of different operators has errors, thereby affecting the measurement structure.
[0035] Furthermore, by opening and closing the control switch device 13 through the communication pipe 10, the acid liquid can be quantitatively input into the three-necked flask, thereby effectively avoiding the acid amount error generated by manual acid injection.
[0036] Further, in order to facilitate the addition of the sample and allow the feeding funnel to be stably placed on the electronic scale, the bottom end of the feeding hopper 1 is a flat structure.
[0037] Furthermore, the connecting surface of the storage hopper 2 and the feeding hopper 1 is a flat structure, the opening and closing device includes a disc 11 provided on the top pipe mouth of the feeding hopper 1, and a rotating rod 12 horizontally provided on the bottom side of the storage hopper 2, one end of the rotating rod 12 penetrates the bottom surface of the storage hopper 2 and horizontally extends into the sidewall of the feeding hopper 1 and the disc 11, the disc 11 is coaxially arranged with the feeding hopper 1, and the cross-sectional area of the disc 11 is the same as the area of the top pipe mouth of the feeding hopper 1.
[0038] When the disc 11 is in a horizontal state, the feeding hopper 1 can be completely blocked, thereby avoiding the leakage of the lithium iron phosphate sample from the feeding hopper 1 during the sample addition process. When the lithium iron phosphate sample needs to enter the three-necked flask, the disc 11 is rotated to a vertical state, thereby allowing the feeding hopper 1 to be penetrated, so that the sample in the storage hopper 2 falls into the three-necked flask from the feeding hopper 1.
[0039] Further, in order to facilitate the insertion of the three-necked flask, the first insertion channel 14, the second insertion channel 7 and the third insertion channel 8 are arranged in a straight line.
[0040] Furthermore, in order to improve the air tightness of the three-necked flask after being inserted into the first insertion channel 14, the second insertion channel 7 and the third insertion channel 8, the inner walls of the first insertion channel 14, the second insertion channel 7 and the third insertion channel 8 are all provided with rubber sealing rings.
[0041] Moreover, after one neck of the three-necked flask is inserted into the third insertion channel 8, it can be sealed, that is, the rubber sealing ring in the third insertion channel 8 is a closed ring structure.
[0042] Further, the communication pipe 10 is in a hose structure, and the switch device 13 is an electric control squeezing and kneading mechanism for clamping and kneading the communication pipe 10.
[0043] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A pretreatment device for measuring active metallic elemental iron in lithium iron phosphate, characterized by, The utility model relates to a kind of acid liquor adding systems and sampling funnels. The bottom of the feeding hopper (1) is flat. The connecting surface of the storage hopper (2) and the feeding hopper (1) is flat, and the opening and closing device includes a disc (11) arranged on the top pipe of the feeding hopper (1), and a rotating rod (12) horizontally arranged on the bottom side of the storage hopper (2), one end of the rotating rod (12) penetrating the feeding hopper (1) is connected with the side wall of the disc (11), the disc (11) is coaxially arranged with the feeding hopper (1), and the cross-sectional area of the disc (11) is the same as the area of the top pipe of the feeding hopper (1).
2. The pre-treatment device for determining active elemental iron in lithium iron phosphate according to claim 1, characterized in that, The first insertion channel (14), the second insertion channel (7) and the third insertion channel (8) are arranged in a straight line.
3. The pre-treatment device for determining active metallic elemental iron in lithium iron phosphate according to claim 1, characterized in that, The inner walls of the first insertion channel (14), the second insertion channel (7) and the third insertion channel (8) are all equipped with rubber sealing rings.
4. The device for pre-treating the active elemental iron in lithium iron phosphate as claimed in claim 1, wherein, The communication pipe (10) is a soft pipe structure, and the switch device (13) is an electric control squeezing and kneading mechanism for clamping and kneading the communication pipe (10).
5. The pre-treatment device for determining active metallic elemental iron in lithium iron phosphate according to claim 1, characterized in that, 6. The pre-treatment device for determining active metallic elemental iron in lithium iron phosphate according to claim 1, characterized in that,