Novel wet dilution device

Abstract

The utility model provides a novel wet dilution device which comprises a first-stage dilution tank and a second-stage dilution tank, a sampling structure is arranged between the first-stage dilution tank and the second-stage dilution tank, and the first-stage dilution tank and the second-stage dilution tank are communicated with each other through the sampling structure; a first-stage diluent controllable input structure is arranged on one side of the first-stage dilution tank, and a second-stage diluent controllable input structure is arranged on one side of the second-stage dilution tank; a first-stage stirring device is arranged in the first-stage dilution tank, and a second-stage stirring device is arranged in the second-stage dilution tank; and a detection device is arranged on one side of the secondary dilution tank. The dilution ratio can be flexibly adjusted through the first-stage diluent controllable input structure and the second-stage diluent controllable input structure, original slurry can be rapidly diluted through the first-stage stirring device and the second-stage stirring device, and then diluted mixed liquid is measured through the detection device. According to the sampling structure, the sampling amount of the mixed liquid can be controlled, and sampling has representativeness.

Description

Technical Field

[0001] The utility model relates to the technical field of powder dilution devices, in particular to a novel wet dilution device. Background Art

[0002] With the advancement of powder production technology, online particle size monitoring technology is gaining increasing attention. Powder production can be divided into two types: wet production and dry production, depending on the medium used in the production process. This application relates to a technique for diluting powder samples during wet production of powders when performing online particle size measurement using a laser diffraction particle size analyzer (referred to as a "laser particle size analyzer").

[0003] Laser particle size analysis systems require that the sample concentration entering the measurement area be kept within a reasonable range (for example, a light shielding ratio of approximately 10%) when measuring particle size. In wet production processes, the actual powder concentration within the production line is often much higher than the concentration required by the laser particle size analyzer, and the concentration within the production line can sometimes vary over time. Therefore, online laser particle size analysis systems require an efficient, controllable slurry dilution device with an adjustable dilution factor.

[0004] There are two types of dilution devices currently available in China and abroad: cascade diluters and repetitive dilution devices. The former can only dilute at a fixed rate, while the latter has drawbacks such as being time-consuming, consuming large amounts of water, and producing insufficiently representative samples. Utility Model Content

[0005] The utility model aims to provide a novel wet dilution device, which can solve the problems of the existing diluter being unable to flexibly adjust the dilution multiple, being time-consuming, consuming a large amount of water, and having insufficient sampling representativeness.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A novel wet dilution device comprises a primary dilution tank and a secondary dilution tank, wherein a sampling structure is provided between the primary dilution tank and the secondary dilution tank, and the two tanks are interconnected through the sampling structure; a controllable input structure for a primary dilution liquid is provided on one side of the primary dilution tank, and a controllable input structure for a secondary dilution liquid is provided on one side of the secondary dilution tank; a primary stirring device is provided inside the primary dilution tank, and a secondary stirring device is provided inside the secondary dilution tank; and a detection device is provided on one side of the secondary dilution tank.

[0008] Preferably, the controllable input structure for the first-level diluent includes a first-level diluent inlet arranged on one side of the first-level dilution tank, and the first-level dilution inlet introduces dilution from the outside through a pipeline; a first-level flow meter and a first-level dilution valve are arranged outside the first-level dilution inlet.

[0009] The controllable input structure for the primary diluent includes a secondary diluent inlet arranged on one side of the secondary dilution tank, which introduces diluent from the outside through a pipeline; a secondary flow meter and a secondary diluent valve are arranged outside the secondary dilution inlet.

[0010] Preferably, the sampling structure includes a primary circulation pipe disposed on one side of the primary dilution tank and a secondary slurry inlet disposed on the secondary dilution tank. A quantitative sampling valve is provided on the primary circulation pipe, and the secondary slurry inlet is connected to the quantitative sampling valve via a pipe. By rotating the quantitative sampling valve, the mixed liquid in the primary dilution tank can be drained into the secondary dilution tank.

[0011] Preferably, the primary stirring device comprises a primary pump arranged at the bottom of the primary dilution tank, the primary pump being provided with a primary stirring shaft, and the primary stirring shaft being provided with a primary stirring blade.

[0012] Preferably, the secondary stirring device comprises a secondary pump arranged at the bottom of the secondary dilution tank, wherein a secondary stirring shaft is mounted on the secondary pump, and a secondary stirring blade is mounted on the secondary stirring shaft.

[0013] Preferably, a primary discharge valve is further provided at the inner bottom of the primary dilution tank.

[0014] Preferably, a secondary discharge valve is further provided at the inner bottom of the secondary dilution tank.

[0015] Preferably, the detection device includes a secondary circulation pipe arranged on one side of the secondary dilution tank, and a particle size measurement unit is connected in the middle of the secondary circulation pipe for measuring the mixed liquid after being diluted in the secondary dilution tank.

[0016] Preferably, an original slurry inlet is provided at the top of the primary dilution tank for inputting an appropriate amount of original slurry into the primary dilution tank.

[0017] The advantages of this utility model compared to the prior art are as follows:

[0018] 1) It can quickly achieve high dilution. For example, if the dilution ratios of the first and second stages are both 100, the final dilution ratio is 10,000.

[0019] 2) Taking out the first-stage mixed liquid from the circulation line 10 is more representative.

[0020] 3) Since only two dilutions are required and the total water consumption for the first round of dilution does not exceed the volume of two dilution tanks (each volume is about 160 mL), the dilution water consumption is very small.

[0021] 4) Since the sampling volume and the amount of diluent added can be measured and controlled, the dilution ratio can be adjusted as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a novel wet dilution device of the present utility model.

[0023] The following are the descriptions of the reference numerals:

[0024] 1: Primary stirring shaft, 2: Original slurry inlet, 3: Primary dilution liquid inlet, 4: Primary flowmeter, 5: Primary dilution liquid valve, 6: Primary dilution tank, 7: Primary stirring blade, 8: Primary discharge valve, 9: Primary pump, 10: Primary circulation pipe, 11: Quantitative sampling valve, 12: Secondary stirring shaft, 13: Secondary slurry inlet, 14: Secondary dilution liquid inlet, 15: Secondary flowmeter, 16: Secondary dilution liquid valve, 17: Secondary dilution tank, 18: Secondary stirring blade, 19: Secondary discharge valve, 20: Secondary pump, 21: Secondary circulation pipe, 22: Particle size measurement unit. DETAILED DESCRIPTION

[0025] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0026] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand the advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0027] Example 1

[0028] The utility model achieves flexible adjustment of the dilution ratio through a controllable first-stage diluent input structure and a controllable second-stage diluent input structure. The first-stage stirring device and the second-stage stirring device can quickly dilute the original slurry, and then the diluted mixed liquid is measured by the detection device. Among them, the sampling structure allows the sampling amount of the mixed liquid to be controlled, and the sampling is representative.

[0029] like Figure 1As shown, a novel wet dilution device includes a primary dilution tank 6 and a secondary dilution tank 17. A sampling structure is provided between the primary dilution tank 6 and the secondary dilution tank 17, and the primary dilution tank 6 and the secondary dilution tank 17 are interconnected through the sampling structure; a primary dilution liquid controllable input structure is provided on one side of the primary dilution tank 6, and a secondary dilution liquid controllable input structure is provided on one side of the secondary dilution tank 17; a primary stirring device is provided inside the primary dilution tank 6, and a secondary stirring device is provided inside the secondary dilution tank 17; and a detection device is provided on one side of the secondary dilution tank 17.

[0030] Furthermore, the controllable input structure of the primary diluent includes a primary diluent inlet 3 provided on one side of the primary dilution tank 6, the primary diluent inlet 3 introduces diluent from the outside through a pipeline; a primary flowmeter 4 and a primary diluent valve 5 are provided on the outside of the primary dilution inlet 3;

[0031] The controllable input structure of the primary diluent includes a secondary diluent inlet 14 arranged on one side of the secondary dilution tank 17. The secondary diluent inlet 14 introduces diluent from the outside through a pipeline; a secondary flow meter 15 and a secondary diluent valve 16 are arranged outside the secondary dilution inlet 14.

[0032] Furthermore, the sampling structure includes a primary circulation pipe 10 arranged on one side of the primary dilution tank 6 and a secondary slurry inlet 13 arranged on the secondary dilution tank 17; a quantitative sampling valve 11 is provided on the primary circulation pipe 10, and the secondary slurry inlet 13 is connected to the quantitative sampling valve 11 through a pipeline. By rotating the quantitative sampling valve 11, the mixed liquid in the primary dilution tank 6 can be drained into the secondary dilution tank 17.

[0033] It should be noted that the primary circulation pipe 10 is divided into two sections, which are respectively arranged at the bottom and the top of the primary dilution tank 6 , so that the dilution liquid circulates in the primary circulation pipe 10 and the primary dilution tank 6 .

[0034] Furthermore, the primary stirring device includes a primary pump 9 arranged at the bottom of the primary dilution tank 6. A primary stirring shaft 1 is mounted on the primary pump 9, and a primary stirring blade 7 is mounted on the primary stirring shaft 1.

[0035] Furthermore, the secondary stirring device includes a secondary pump 20 disposed at the bottom of the secondary dilution tank 17. A secondary stirring shaft 12 is mounted on the secondary pump 20, and a secondary stirring blade 18 is mounted on the secondary stirring shaft 12.

[0036] Furthermore, a primary discharge valve 8 is provided at the inner bottom of the primary dilution tank 6 .

[0037] Furthermore, a secondary discharge valve 19 is provided at the inner bottom of the secondary dilution tank 17 .

[0038] Furthermore, the detection device includes a secondary circulation pipe 21 arranged on one side of the secondary dilution tank 17 , and a particle size measurement unit 22 is connected in the middle of the secondary circulation pipe 21 for measuring the mixed liquid diluted by the secondary dilution tank 17 .

[0039] It should be noted that the secondary circulation pipe 21 is divided into two sections, which are respectively arranged at the bottom and the top of the secondary dilution tank 17, so that the dilution liquid circulates in the secondary circulation pipe 21, the particle size measurement unit 22 and the secondary dilution tank 17. Both the primary pump 9 and the secondary pump 20 are centrifugal pumps.

[0040] Furthermore, a raw slurry inlet 2 is provided at the top of the primary dilution tank 6 for inputting an appropriate amount of raw slurry into the primary dilution tank 6 .

[0041] The working process is as follows: first, open the primary dilution valve 5, and inject an appropriate amount of dilution into the primary dilution tank 6 under the monitoring of the primary flow meter 4; open the secondary dilution valve 16, and inject an appropriate amount of dilution into the secondary dilution tank 17 under the monitoring of the secondary flow meter 15;

[0042] Start the primary stirring shaft 1 and the secondary stirring shaft 12, so that the dilution in the two dilution tanks is in a high-speed flow state. At the same time, the blades of the primary pump 9 and the secondary pump 20 start to rotate, and the dilution flows in the primary circulation pipe 10 and the secondary circulation pipe 21.

[0043] An appropriate amount of raw slurry is fed into the primary dilution tank 6 through the raw slurry inlet 2. The primary agitator shaft 1 stirs the slurry for an appropriate period of time (e.g., 30 seconds) to ensure uniform mixing and good dispersion within the primary dilution tank. Due to the centrifugal pump, the particle size distribution of the liquid in the primary circulation pipe 10 is consistent with that of the liquid in the primary dilution tank 6.

[0044] Use the quantitative sampling valve 11 to take out an appropriate amount of primary mixed liquid from the primary circulation pipe 10 and inject it into the secondary dilution tank 17 through the secondary slurry inlet 13. Under the stirring of the secondary stirring blade 18 and the action of the secondary pump 20, the slurry will be further diluted and stirred, and enter the particle size measurement unit 22 through the secondary circulation pipe 21.

[0045] The particle size measurement unit 22 measures the diluted mixed solution. If the sample concentration is within the appropriate range, dilution is complete and the particle size measurement unit 22 can proceed to the actual particle size measurement. If the sample concentration exceeds the appropriate range, the concentration can be adjusted to the appropriate value by adding more primary mixed solution or secondary diluent. After the measurement is completed, the mixed solution is discharged through the primary discharge valve 8 and the secondary discharge valve 19. The two dilution tanks and pipelines are then cleaned, and the measurement is concluded.

[0046] In the description of the present invention, it should be understood that the terms "middle", "length", "upper", "lower", "front", "back", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] In the present invention, unless otherwise expressly specified or limited, a first feature "on" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. "Multiple" means at least two, such as two or three, unless otherwise expressly specified or limited.

[0048] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0049] The above is only for explaining the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention without creative work should be included in the scope of protection of the present invention.

Claims

1. A novel wet dilution device, characterized in that: The invention comprises a primary dilution tank (6) and a secondary dilution tank (17), wherein a sampling structure is provided between the primary dilution tank (6) and the secondary dilution tank (17), and the primary dilution tank (6) and the secondary dilution tank (17) are interconnected through the sampling structure; a primary dilution liquid controllable input structure is provided on one side of the primary dilution tank (6), and a secondary dilution liquid controllable input structure is provided on one side of the secondary dilution tank (17); a primary stirring device is provided inside the primary dilution tank (6), and a secondary stirring device is provided inside the secondary dilution tank (17); and a detection device is provided on one side of the secondary dilution tank (17).

2. The novel wet dilution device according to claim 1, characterized in that: The controllable input structure for the primary diluent comprises a primary diluent inlet (3) provided on one side of the primary dilution tank (6), wherein the primary diluent inlet (3) introduces the diluent from the outside through a pipeline; a primary flow meter (4) and a primary diluent valve (5) are provided on the outside of the primary diluent inlet (3); The controllable input structure for the primary diluent comprises a secondary diluent inlet (14) arranged on one side of the secondary dilution tank (17), wherein the secondary diluent inlet (14) introduces diluent from the outside through a pipeline; a secondary flow meter (15) and a secondary diluent valve (16) are arranged outside the secondary diluent inlet (14).

3. The novel wet dilution device according to claim 2, characterized in that: The sampling structure comprises a primary circulation pipe (10) arranged on one side of the primary dilution tank (6) and a secondary slurry inlet (13) arranged on the secondary dilution tank (17); a quantitative sampling valve (11) is provided on the primary circulation pipe (10), and the secondary slurry inlet (13) is connected to the quantitative sampling valve (11) through a pipeline. By rotating the quantitative sampling valve (11), the mixed liquid in the primary dilution tank (6) can be drained into the secondary dilution tank (17).

4. The novel wet dilution device according to claim 3, characterized in that: The primary stirring device comprises a primary pump (9) arranged at the bottom of the primary dilution tank (6); a primary stirring shaft (1) is mounted on the primary pump (9), and a primary stirring blade (7) is mounted on the primary stirring shaft (1).

5. The novel wet dilution device according to claim 4, characterized in that: The secondary stirring device comprises a secondary pump (20) arranged at the bottom of the secondary dilution tank (17); a secondary stirring shaft (12) is mounted on the secondary pump (20), and a secondary stirring blade (18) is mounted on the secondary stirring shaft (12).

6. The novel wet dilution device according to claim 5, characterized in that: A first-stage discharge valve (8) is also provided at the inner bottom of the first-stage dilution tank (6).

7. The novel wet dilution device according to claim 6, characterized in that: A secondary discharge valve (19) is also provided at the inner bottom of the secondary dilution tank (17).

8. The novel wet dilution device according to claim 7, characterized in that: The detection device comprises a secondary circulation pipe (21) arranged on one side of the secondary dilution tank (17), and a particle size measurement unit (22) is connected in the middle of the secondary circulation pipe (21) for measuring the mixed liquid diluted by the secondary dilution tank (17).

9. The novel wet dilution device according to claim 8, characterized in that: The top of the primary dilution tank (6) is provided with an original slurry inlet (2) for inputting an appropriate amount of original slurry into the primary dilution tank (6).

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