Pulp concentration detection device and pulp concentration detection method

Abstract

The present application provides a kind of ore pulp concentration detection device and ore pulp concentration detection method, it includes: first container, for containing ore pulp, the side wall of first container is provided with first communication port and second communication port along vertical direction distribution;Second container has accommodating cavity and spiral channel, there is conductive liquid in accommodating cavity, the bottom of spiral channel is communicated with accommodating cavity to make conductive liquid flow into spiral channel, the top of accommodating cavity and the top of spiral channel are respectively communicated with first communication port and second communication port;First electrode band and second electrode band, parallelly arranged in spiral channel, first electrode band and second electrode band are all extended to top end along the bottom end of spiral channel;Resistance detection piece is respectively connected with the top end of first electrode band and the top end of second electrode band, and resistance detection piece can detect the resistance of conductive liquid between first electrode band and second electrode band;Processor is electrically connected with resistance detection piece, and according to resistance data, the concentration of ore pulp is detected in real time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ore pulp concentration detection, in particular to an ore pulp concentration detection device and an ore pulp concentration detection method. BACKGROUND

[0002] Currently, a differential pressure type ore pulp concentration detector is usually used to detect the concentration of ore pulp. The differential pressure type ore pulp concentration detector usually measures the pressure of a certain height difference by two pressure sensors to calculate the concentration. The disadvantage of using a pressure sensor is that the pressure taking element of the sensor is easy to be blocked or worn, which affects the reliability of the detection result. SUMMARY

[0003] The present application provides an ore pulp concentration detection device and an ore pulp concentration detection method to solve the problem of poor reliability of the ore pulp concentration detection device in the prior art.

[0004] According to one aspect of the present application, an ore pulp concentration detection device is provided, which comprises: a first container for containing ore pulp, a side wall of the first container being provided with a first communication port and a second communication port, the first communication port being located below the second communication port; a second container having a containing cavity and a spiral channel penetrating the containing cavity, the containing cavity containing a conductive liquid, the bottom of the spiral channel being in communication with the containing cavity to enable the conductive liquid to flow into the spiral channel, the top of the containing cavity being in communication with the first communication port, and the top of the spiral channel being in communication with the second communication port; a first electrode strip and a second electrode strip being arranged in parallel in the spiral channel, the first electrode strip and the second electrode strip being oppositely arranged, and the extension directions of the first electrode strip and the second electrode strip being the same as the extension direction of the spiral channel, the first electrode strip and the second electrode strip both extending from the bottom end of the spiral channel to the top end of the spiral channel; a resistance detection member being connected to the top end of the first electrode strip and the top end of the second electrode strip respectively, the resistance detection member being capable of detecting the resistance of the conductive liquid between the first electrode strip and the second electrode strip; and a processor being electrically connected to the resistance detection member, the processor being capable of detecting the concentration of the ore pulp in real time according to the resistance data obtained by the resistance detection member.

[0005] Further, the first electrode strip and the second electrode strip have the same structure, and the first electrode strip and the second electrode strip are oppositely arranged.

[0006] Further, the second container comprises: a body portion having a containing cavity; and a spiral pipe being at least partially penetrating the body portion, the axial direction of the spiral pipe being vertical, the bottom end of the spiral pipe being immersed in the conductive liquid to enable the conductive liquid to flow into the spiral pipe, the spiral pipe forming a spiral channel.

[0007] Furthermore, the slurry concentration detection device also includes: a first connecting pipe and a second connecting pipe, one end of the first connecting pipe being connected to a first connecting port and the other end of the first connecting pipe being connected to the top of the receiving cavity; one end of the second connecting pipe being connected to a second connecting port and the other end of the second connecting pipe being connected to the top of the spiral tube.

[0008] Furthermore, the main body includes a cylindrical body and a cover body that are sealed to each other, with the bottom of the spiral tube passing through the cylindrical body and the top of the spiral tube passing through the cover body and located on the outside of the main body.

[0009] According to another aspect of the present invention, a method for detecting slurry concentration is provided. The method applies the above-described slurry concentration detection device and includes: injecting slurry into a first container of the slurry concentration detection device and filling a second container of the slurry concentration detection device with a conductive liquid; connecting a receiving cavity with a first connecting port and connecting a spiral channel with a second connecting port; detecting the resistance value R between a first electrode strip and a second electrode strip using a resistance detection element of the slurry concentration detection device; and calculating the slurry concentration based on the resistance value R by a processor.

[0010] Furthermore, the processor calculates the slurry concentration based on the resistance value R, specifically including: obtaining the height difference Δh1 between the first and second connecting ports; obtaining the height difference Δh2 between the liquid level of the conductive liquid in the spiral channel and the liquid level of the conductive liquid in the receiving cavity;

[0011] Formula 1;

[0012] Formula 2;

[0013] The slurry concentration is calculated using Formula 1 and Formula 2; where ρ1 is the slurry density. ρ is the density of the mineral solid, ρ2 is the density of the conductive liquid, and c is the concentration of the slurry.

[0014] Further, obtaining the height difference Δh2 between the liquid level of the conductive liquid in the spiral channel and the liquid level of the conductive liquid in the receiving cavity specifically includes: obtaining the liquid level H1 of the conductive liquid in the receiving cavity; obtaining the liquid level H2 of the conductive liquid in the spiral channel; and calculating Δh2 based on H1 and H2.

[0015] Furthermore, obtaining the liquid level height H2 of the conductive liquid within the spiral channel specifically includes:

[0016] Formula 3;

[0017] Formula 4;

[0018] Formula 5;

[0019] Where L is the distance between the first electrode strip and the second electrode strip, u is the conductivity of the conductive liquid, S is the area of ​​the overlapping projection of the submerged portions of the first and second electrode strips, a is the width of the overlapping projection of the submerged portions of the first and second electrode strips, and b is the length of the overlapping projection of the submerged portions of the first and second electrode strips. The outer diameter of the spiral channel. H2 is the pitch of the spiral channel; H2 is calculated according to Formulas 3, 4 and 5.

[0020] Further, obtaining the liquid level height H1 of the conductive liquid within the containment cavity specifically includes:

[0021] Formula Six;

[0022] Where H0 is the height value when the liquid level of the spiral channel is level with the liquid level of the receiving cavity under standard atmospheric pressure, S1 is the cross-sectional area of ​​the flow channel of the spiral channel, and S2 is the cross-sectional area of ​​the receiving cavity; H1 is calculated according to Formula 6.

[0023] By applying the technical solution of this invention, the processor detects the slurry concentration in real time based on the resistance data between the first and second electrode strips obtained by the resistance detection element, thereby ensuring the reliability of the slurry concentration detection device. Specifically, when using this device to detect the slurry concentration, slurry is injected into the first container and stirred to ensure that the slurry always covers the second connecting port, and the slurry concentration changes in real time. A certain volume of conductive liquid is placed in the spiral channel, connecting the top of the receiving cavity to the first connecting port and the top of the spiral channel to the second connecting port, while preventing slurry from entering the receiving cavity. Under the pressure difference between the first and second connecting ports of the first container, some of the conductive liquid in the receiving cavity flows into the spiral channel, and the submerged length of the first and second electrode strips changes in real time. The resistance detection element detects the resistance value between the first and second electrode strips, and the processor detects the slurry concentration in real time based on the resistance value obtained by the resistance detection element. In conventional technical solutions, the sensor pressure-taking element is directly inserted into the slurry. This setting makes the sensor pressure-taking element prone to blockage or wear by the slurry, affecting the reliability of the sensor pressure-taking element. Compared with traditional technical solutions, the design of this application can prevent slurry from entering the containment cavity and prevent the slurry from contacting the first electrode strip, the second electrode strip, and the resistance detection element, thereby preventing wear of the detection element and ensuring the reliability of the detection results. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Fig. 1 A schematic diagram of the slurry concentration detection device provided according to an embodiment of the present invention when it is not in operation is shown;

[0026] Fig. 2 A schematic diagram of the slurry concentration detection device provided according to an embodiment of the present invention in operation is shown.

[0027] Fig. 3 A schematic diagram of the cross-sectional structure of a partial spiral tube provided according to an embodiment of the present invention is shown.

[0028] The above figures include the following reference numerals:

[0029] 10. First container; 11. First connecting port; 12. Second connecting port;

[0030] 20. Second container; 201. Receiving cavity; 202. Spiral channel;

[0031] 21. Main body; 22. Spiral tube;

[0032] 30. First electrode strip;

[0033] 40. Second electrode strip;

[0034] 50. Resistance testing components;

[0035] 60. First connecting tube;

[0036] 70. Second connecting tube. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] like Figs. 1 to 3As shown, this embodiment of the invention provides a slurry concentration detection device, which includes a first container 10, a second container 20, a first electrode strip 30, a second electrode strip 40, a resistance detection element 50, and a processor. The first container 10 is used to hold the slurry, and its side wall has a first connecting port 11 and a second connecting port 12, with the first connecting port 11 located below the second connecting port 12. The second container 20 has a receiving cavity 201 and a spiral channel 202 passing through the receiving cavity 201. The receiving cavity 201 contains a conductive liquid. The bottom of the spiral channel 202 communicates with the receiving cavity 201 to allow the conductive liquid to flow into the spiral channel 202. The top of the receiving cavity 201 communicates with the first connecting port 11, and the top of the spiral channel 202 communicates with the second connecting port 12. The first electrode strip 30 and the second electrode strip 40 are arranged parallel to each other within the spiral channel 202, and are positioned opposite each other. The extension directions of both the first electrode strip 30 and the second electrode strip 40 are the same as the extension direction of the spiral channel 202, extending from the bottom to the top of the spiral channel 202. A resistance detection element 50 is connected to the top of the first electrode strip 30 and the top of the second electrode strip 40, respectively. The resistance detection element 50 can detect the resistance of the conductive liquid between the first electrode strip 30 and the second electrode strip 40. The processor is electrically connected to the resistance detection element 50, and uses the resistance data acquired by the resistance detection element 50 to detect the concentration of the slurry in real time.

[0039] Applying the technical solution of this invention, the processor detects the slurry concentration in real time based on the resistance data between the first electrode strip 30 and the second electrode strip 40 obtained by the resistance detection element 50, thereby ensuring the reliability of the slurry concentration detection device. Specifically, when using this device to detect the slurry concentration, slurry is injected into the first container 10 and stirred to ensure that the slurry always covers the second connecting port 12, and the slurry concentration changes in real time; a certain volume of conductive liquid is placed in the spiral channel 202, connecting the top of the receiving cavity 201 with the first connecting port 11 and the top of the spiral channel 202 with the second connecting port 12, while preventing the slurry from entering the receiving cavity 201. Under the pressure difference between the first connecting port 11 and the second connecting port 12 of the first container 10, part of the conductive liquid in the receiving cavity 201 flows into the spiral channel 202, and the submerged length of the first electrode strip 30 and the second electrode strip 40 changes in real time; the resistance detection element 50 detects the resistance value between the first electrode strip 30 and the second electrode strip 40, and the processor detects the slurry concentration in real time based on the resistance value obtained by the resistance detection element 50. In traditional solutions, the sensor pressure-sensing element is directly inserted into the slurry. This design makes the sensor pressure-sensing element prone to blockage or wear by the slurry, affecting its reliability. Compared to traditional solutions, the design of this application prevents the slurry from entering the receiving cavity 201 and avoids contact between the slurry and the first electrode strip 30, the second electrode strip 40, and the resistance detection element 50. This prevents wear on the detection element and ensures the reliability of the test results. Furthermore, this design is simple in structure and low in cost. Moreover, the spiral channel 202 in this design acts as an amplifier. During testing, the drop in the level of the conductive liquid in the receiving cavity 201 is much smaller than the rise in the level of the conductive liquid in the spiral channel 202. This design ensures the accuracy of the test results.

[0040] Specifically, the pulp concentration is calculated using the following formula:

[0041] ; ; ; ; ; ; ;

[0042] Where L is the distance between the first electrode strip 30 and the second electrode strip 40, u is the conductivity of the conductive liquid, S is the area of ​​the overlapping projection of the submerged portions of the first electrode strip 30 and the second electrode strip 40, a is the width of the overlapping projection of the submerged portions of the first electrode strip 30 and the second electrode strip 40, and b is the length of the overlapping projection of the submerged portions of the first electrode strip 30 and the second electrode strip 40. The outer diameter of the spiral channel 202 H0 is the pitch of the spiral channel 202; H2 is the height of the liquid surface in the spiral channel 202 when it is flush with the liquid surface in the receiving cavity 201 under standard atmospheric pressure; H1 is the liquid surface height of the conductive liquid in the spiral channel 202 after the first connecting port 11 is connected to the receiving cavity 201 and the second connecting port 12 is connected to the spiral channel 202; S1 is the cross-sectional area of ​​the flow channel of the spiral channel 202; S2 is the cross-sectional area of ​​the receiving cavity 201; ρ1 is the slurry density. ρ is the density of the mineral solid, ρ2 is the density of the conductive liquid; Δh1 is the height difference between the first connecting port 11 and the second connecting port 12, and c is the slurry concentration. In this embodiment, the conductive liquid is a 1 g / L sodium chloride solution.

[0043] Furthermore, the first electrode strip 30 and the second electrode strip 40 have the same structure and are arranged facing each other. In this embodiment, the first electrode strip 30 and the second electrode strip 40 are rectangular sheet structures, and are spaced apart along the radial direction of the spiral channel 202. This arrangement ensures that the overlapping projection areas of the submerged portions of the first electrode strip 30 and the second electrode strip 40 are equal, and also ensures the convenience of the calculation process. In this embodiment, both the first electrode strip 30 and the second electrode strip 40 are disposed on the inner surface of the spiral channel 202, and they are not electrically connected to each other. This arrangement ensures that the inner wall of the spiral channel 202 supports the first electrode strip 30 and the second electrode strip 40, thus ensuring the stability of the first electrode strip 30 and the second electrode strip 40.

[0044] Specifically, the second container 20 includes a body portion 21 and a spiral tube 22. The body portion 21 has a receiving cavity 201. The spiral tube 22 is made of insulating material and is at least partially inserted into the body portion 21. The axis of the spiral tube 22 is vertical, and its bottom end is immersed in a conductive liquid to allow the conductive liquid to flow into the spiral tube 22, forming a spiral channel 202. In this embodiment, the body portion 21 has a cylindrical structure, and its axis coincides with the axis of the spiral tube 22. This arrangement facilitates the calculation of slurry concentration. The top of the spiral tube 22 has a vertical connecting pipe, the top end of which passes through the top of the body portion 21. Two through holes are provided on the side wall of the top end of the vertical connecting pipe. These two through holes are respectively used for the first electrode strip 30 and the second electrode strip 40 to pass through, and are respectively sealed to the first electrode strip 30 and the second electrode strip 40 to prevent air leakage and ensure the accuracy of the test results.

[0045] Furthermore, the slurry concentration detection device also includes a first connecting pipe 60 and a second connecting pipe 70. One end of the first connecting pipe 60 is connected to the first connecting port 11, and the other end of the first connecting pipe 60 is connected to the top of the receiving cavity 201. One end of the second connecting pipe 70 is connected to the second connecting port 12, and the other end of the second connecting pipe 70 is connected to the top of the spiral tube 22. In this embodiment, the first connecting pipe 60 includes a first horizontal section, a first vertical section, a second horizontal section, and a second vertical section connected in sequence. The first vertical section bends upward, and the second vertical section bends downward. The bottom surface of the body 21 is higher than the height of the second connecting port 12. This arrangement can prevent slurry from flowing into the receiving cavity 201. In this embodiment, the first connecting pipe 60 and the second connecting pipe 70 have the same shape.

[0046] Specifically, the main body 21 includes a cylindrical body and a cover that are sealed together. The bottom of the spiral tube 22 passes through the cylindrical body, and the top of the spiral tube 22 passes through the cover and is located outside the main body 21. This design does not limit the specific connection method between the cylindrical body and the cover, as long as a sealed connection is ensured. This configuration ensures that during the test, the pressure difference between the first connecting port 11 and the second connecting port 12 is equal to the pressure difference between the liquid level of the conductive liquid in the spiral channel 202 and the liquid level of the conductive liquid in the receiving cavity 201, ensuring the accuracy of the test results. Specifically, a detachable connection can be achieved through threaded connections or fasteners. This configuration facilitates the replacement of the conductive liquid in the receiving cavity 201, improving the adaptability of the device.

[0047] The present invention also provides a method for detecting pulp concentration, which utilizes the aforementioned pulp concentration detection device and includes:

[0048] Slurry is injected into the first container 10 of the slurry concentration detection device, and conductive liquid is placed in the second container 20 of the slurry concentration detection device.

[0049] The cavity 201 is connected to the first communication port 11, and the spiral channel 202 is connected to the second communication port 12.

[0050] The resistance value R between the first electrode strip 30 and the second electrode strip 40 is detected by the resistance detection element 50 of the slurry concentration detection device; the processor calculates the slurry concentration based on the resistance value R.

[0051] The processor calculates the slurry concentration based on the resistance value R, specifically including: obtaining the height difference Δh1 between the first connecting port 11 and the second connecting port 12; obtaining the height difference Δh2 between the liquid level of the conductive liquid in the spiral channel 202 and the liquid level of the conductive liquid in the receiving cavity 201.

[0052] Formula 1;

[0053] Formula 2;

[0054] The slurry concentration is calculated using Formula 1 and Formula 2; where ρ1 is the slurry density. ρ is the density of the mineral solid, ρ2 is the density of the conductive liquid, and c is the concentration of the slurry.

[0055] Further, obtaining the height difference Δh2 between the liquid level of the conductive liquid in the spiral channel 202 and the liquid level of the conductive liquid in the receiving cavity 201 specifically includes: obtaining the liquid level H1 of the conductive liquid in the receiving cavity 201; obtaining the liquid level H2 of the conductive liquid in the spiral channel 202; and calculating Δh2 based on H1 and H2.

[0056] Furthermore, the liquid level height H2 of the conductive liquid within the spiral channel 202 is obtained, specifically including:

[0057] Formula 3;

[0058] Formula 4;

[0059] Formula 5;

[0060] Where L is the distance between the first electrode strip 30 and the second electrode strip 40, u is the conductivity of the conductive liquid, S is the area of ​​the submerged overlapping projection of the first electrode strip 30 and the second electrode strip 40, a is the width of the submerged overlapping projection of the first electrode strip 30 and the second electrode strip 40, and b is the length of the submerged overlapping projection of the first electrode strip 30 and the second electrode strip 40. The outer diameter of the spiral channel 202 H2 is the pitch of the spiral channel 202; calculated according to formulas 3, 4 and 5.

[0061] Further, obtaining the liquid level height H1 of the conductive liquid within the receiving cavity 201 specifically includes:

[0062] Formula Six;

[0063] Where H0 is the height value when the liquid surface of the spiral channel 202 is level with the liquid surface of the receiving cavity 201 under standard atmospheric pressure, S1 is the cross-sectional area of ​​the flow channel of the spiral channel 202, and S2 is the cross-sectional area of ​​the receiving cavity 201; H1 is calculated according to Formula 6.

[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0066] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A slurry concentration detection device, characterized in that, include: The first container (10) is used to hold slurry. The side wall of the first container (10) is provided with a first connecting port (11) and a second connecting port (12). The first connecting port (11) is located below the second connecting port (12). The second container (20) has a receiving cavity (201) and a spiral channel (202) passing through the receiving cavity (201). The receiving cavity (201) contains a conductive liquid. The bottom of the spiral channel (202) is connected to the receiving cavity (201) so that the conductive liquid can flow into the spiral channel (202). The top of the receiving cavity (201) is connected to the first communication port (11), and the top of the spiral channel (202) is connected to the second communication port (12). The first electrode strip (30) and the second electrode strip (40) are arranged in parallel within the spiral channel (202), and the first electrode strip (30) and the second electrode strip (40) are arranged opposite to each other. The extension directions of the first electrode strip (30) and the second electrode strip (40) are the same as the extension direction of the spiral channel (202). The first electrode strip (30) and the second electrode strip (40) extend from the bottom end of the spiral channel (202) to the top end of the spiral channel (202). The resistance detection element (50) is connected to the top end of the first electrode strip (30) and the top end of the second electrode strip (40) respectively. The resistance detection element (50) can detect the resistance of the conductive liquid between the first electrode strip (30) and the second electrode strip (40). The processor is electrically connected to the resistance detection element (50), and the processor detects the concentration of the slurry in real time based on the resistance data obtained by the resistance detection element (50).

2. The slurry concentration detection device according to claim 1, characterized in that, The first electrode strip (30) and the second electrode strip (40) have the same structure and are arranged facing each other.

3. The slurry concentration detection device according to claim 1, characterized in that, The second container (20) includes: The main body (21) has the receiving cavity (201); The spiral tube (22) is at least partially inserted into the body part (21). The axis of the spiral tube (22) is vertical. The bottom end of the spiral tube (22) is immersed in the conductive liquid so that the conductive liquid flows into the spiral tube (22). The spiral tube (22) forms the spiral channel (202).

4. The slurry concentration detection device according to claim 3, characterized in that, The slurry concentration detection device also includes: A first connecting pipe (60) and a second connecting pipe (70), one end of the first connecting pipe (60) is connected to the first connecting port (11), and the other end of the first connecting pipe (60) is connected to the top of the receiving cavity (201); One end of the second connecting pipe (70) is connected to the second connecting port (12), and the other end of the second connecting pipe (70) is connected to the top of the spiral pipe (22).

5. The slurry concentration detection device according to claim 4, characterized in that, The body part (21) includes: The cylinder and the cover are sealed together. The bottom of the spiral tube (22) passes through the cylinder and the top of the spiral tube (22) passes through the cover and is located outside the body part (21).

6. A method for detecting slurry concentration, characterized in that, The pulp concentration detection method uses the pulp concentration detection device according to any one of claims 1 to 5, and the pulp concentration detection method includes: Slurry is injected into the first container (10) of the slurry concentration detection device, and conductive liquid is filled into the second container (20) of the slurry concentration detection device; Connect the receiving cavity (201) to the first connecting port (11), and connect the spiral channel (202) to the second connecting port (12); The resistance value R between the first electrode strip (30) and the second electrode strip (40) is detected by the resistance detection element (50) of the slurry concentration detection device; The processor calculates the slurry concentration based on the resistance value R.

7. The method for detecting pulp concentration according to claim 6, characterized in that, The processor calculates the slurry concentration based on the resistance value R, specifically including: Obtain the height difference Δh1 between the first connecting port (11) and the second connecting port (12); The height difference Δh2 between the liquid level of the conductive liquid in the spiral channel (202) and the liquid level of the conductive liquid in the receiving cavity (201) is obtained. Formula 1; Formula 2; The slurry concentration is calculated using Formula 1 and Formula 2. Where ρ1 is the slurry density, ρ is the density of the mineral solid, ρ2 is the density of the conductive liquid, and c is the concentration of the slurry.

8. The method for detecting pulp concentration according to claim 7, characterized in that, Obtaining the height difference Δh2 between the liquid level of the conductive liquid in the spiral channel (202) and the liquid level of the conductive liquid in the receiving cavity (201) specifically includes: Obtain the liquid level height H1 of the conductive liquid in the receiving cavity (201); Obtain the liquid level height H2 of the conductive liquid within the spiral channel (202); △h2 is calculated based on H1 and H2.

9. The method for detecting pulp concentration according to claim 8, characterized in that, Obtaining the liquid level height H2 of the conductive liquid within the spiral channel (202) specifically includes: Formula 3; Formula 4; Formula 5; Where, L is the distance between the first electrode strip (30) and the second electrode strip (40), u is the conductivity of the conductive liquid, S is the area of the overlapping projection of the immersed portions of the first electrode strip (30) and the second electrode strip (40), a is the width of the overlapping projection of the immersed portions of the first electrode strip (30) and the second electrode strip (40), and b is the length of the overlapping projection of the immersed portions of the first electrode strip (30) and the second electrode strip (40). is the outer diameter of the spiral channel (202), is the pitch of the spiral channel (202); H2 is calculated using formulas 3, 4, and 5.

10. The method for detecting pulp concentration according to claim 9, characterized in that, Obtaining the liquid level height H1 of the conductive liquid within the receiving cavity (201) specifically includes: Formula Six; Wherein, H0 is the height value when the liquid level of the spiral channel (202) is flush with the liquid level of the receiving cavity (201) under standard atmospheric pressure, S1 is the cross-sectional area of ​​the flow channel of the spiral channel (202), and S2 is the cross-sectional area of ​​the receiving cavity (201). H1 is calculated using Formula 6.

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