Slurry density measuring device and density measuring method

Abstract

The invention discloses a slurry density measuring device and method, and belongs to the technical field of density measurement. The slurry density can be automatically measured, the requirement for safety measures is low, and the measurement precision is high. The slurry density measuring device comprises a metering container, a feeding pipeline, a water inlet pipeline, a weighing assembly and a controller. A discharge valve is arranged on the metering container, and when the discharge valve is opened, liquid in the metering container can be completely discharged through the discharge valve. And a feeding control assembly is arranged on the feeding pipeline. And a water inlet control assembly is arranged on the water inlet pipeline. The weighing assembly can measure the weight of the metering container. The controller is electrically connected with the discharging valve, the feeding control assembly, the water inlet control assembly and the weighing assembly.

Description

Technical Field

[0001] The present application belongs to the technical field of metal material detection, and in particular relates to a slurry density measuring device and a density measuring method. Background Art

[0002] Currently, slurry density measurement in mineral processing processes primarily involves methods such as concentration pot measurement, nuclear density measurement, and ultrasonic density measurement. Concentration pot measurement is manual and labor-intensive; nuclear density measurement is radioactive and requires strict safety measures; and ultrasonic density measurement suffers from poor accuracy. Therefore, a slurry density measurement device and method that can simultaneously address these issues is urgently needed. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a slurry density measuring device and density measuring method, which can automatically measure slurry density, have low safety measures requirements, and have high measurement accuracy.

[0004] According to a first aspect of an embodiment of the present application, a slurry density measuring device is provided, comprising:

[0005] A metering container, wherein the metering container is provided with a discharge valve, and when the discharge valve is opened, the liquid in the metering container can be discharged through the discharge valve;

[0006] a feed pipe, one end of which is connected to the metering container, through which the slurry to be measured can be added to the interior of the metering container; and a feed control component is provided on the feed pipe, through which the amount of the slurry to be measured added to the metering container can be controlled;

[0007] a water inlet pipe, one end of which is connected to the measuring container, through which water can be added to the interior of the measuring container; and a water inlet control component is provided on the water inlet pipe, through which the amount of water added to the measuring container can be controlled;

[0008] a weighing component, wherein the weighing component can measure the weight of the measuring container;

[0009] A controller is electrically connected to the discharge valve, the feed control component, the water inlet control component and the weighing component respectively.

[0010] In some embodiments, the feed control assembly includes a sampling valve having three ports, the three ports of the sampling valve being connected to the feed pipe, the feeding pipe, and the discharge pipe in sequence, the other end of the feeding pipe being connected to the slurry container to be measured, and by switching the state of the sampling valve, the feeding pipe can be connected to the feed pipe, or the feeding pipe can be connected to the discharge pipe.

[0011] In some embodiments, a valve anti-clogging assembly is provided on the feeding pipe, and the valve anti-clogging assembly includes an anti-clogging pipe and an anti-clogging valve. One end of the anti-clogging pipe is connected to the water container, and the other end of the anti-clogging pipe is connected to the feeding pipe. The anti-clogging valve is provided on the anti-clogging pipe.

[0012] In some embodiments, a main control valve is further provided on the feeding pipeline, and the main control valve can control the on-off of the feeding pipeline.

[0013] In some embodiments, the slurry density measuring device further includes an overflow pipe, the metering container is provided with an overflow port, and the overflow pipe is connected to the interior of the metering container through the overflow port.

[0014] In some embodiments, a liquid level measuring component is provided on the overflow pipe.

[0015] In some embodiments, the weighing assembly includes a weighing frame and a weighing sensor, wherein the weighing frame is used to support the measuring container, and the weighing sensor is disposed on the weighing frame, and the weighing sensor can measure the weight of the measuring container.

[0016] A second aspect of the embodiments of the present application provides a slurry density measurement method, which is applied to the slurry density measurement device described in the first aspect. The slurry density measurement method includes:

[0017] Obtaining an initial weighing value from the weighing component, wherein the initial weighing value is a value detected by the weighing component when no liquid is contained in the measuring container;

[0018] adding a first volume of water into the metering container through a water inlet pipe, wherein the amount of water added into the metering container is controlled by a water inlet control component;

[0019] obtaining a first weighing value from the weighing component, the first weighing value being a value detected by the weighing component when the measuring container contains the first volume of water;

[0020] Controlling the discharge valve to open, and controlling the discharge valve to close when detecting that the water inside the measuring container is completely drained;

[0021] adding the first volume of the slurry to be measured into the metering container through a feed pipe, wherein the amount of the slurry to be measured added into the metering container is controlled by a feed control component;

[0022] obtaining a second weighing value from the weighing component, wherein the second weighing value is a value detected by the weighing component when the measuring container contains the first volume of the slurry to be measured;

[0023] The density of the slurry to be measured is calculated according to the initial weighing value, the first weighing value and the second weighing value.

[0024] In some embodiments, adding a first volume of water into the metering container through the water inlet pipe comprises:

[0025] controlling the water inlet control assembly to open so that water is added into the metering container through the water inlet pipe;

[0026] When the water in the measuring container flows from the overflow port into the overflow pipe, a first liquid level signal is obtained from the liquid level measuring element, wherein when the water in the measuring container flows from the overflow port into the overflow pipe, the measuring container contains the first volume of water;

[0027] According to the first liquid level signal, controlling the water inlet control component to close so as to stop adding water into the measuring container through the water inlet pipe;

[0028] and / or,

[0029] Adding the first volume of the slurry to be measured into the metering container through a feed pipe comprises:

[0030] Controlling the feed control assembly to open so that the slurry to be measured is added into the metering container through the feed pipe;

[0031] When the slurry to be measured in the metering container flows from the overflow port into the overflow pipe, a second liquid level signal is obtained from the liquid level measuring member, wherein when the slurry to be measured in the metering container flows from the overflow port into the overflow pipe, the metering container contains the first volume of the slurry to be measured;

[0032] According to the second liquid level signal, the feed control component is controlled to be closed, so as to stop adding the slurry to be measured into the metering container through the feed pipe.

[0033] In some embodiments, the method further comprises:

[0034] The discharge valve is controlled to open, and when it is detected that the slurry to be measured in the metering container is completely discharged, the water inlet control component is controlled to open so that water is added to the metering container through the water inlet pipe.

[0035] The slurry density measuring device of the present application includes a metering container equipped with a discharge valve. When the discharge valve is opened, the discharge valve can drain the liquid in the metering container. The slurry to be measured can be added to the metering container via a feed pipe, and the amount of the slurry added to the metering container can be controlled by a feed control assembly. Water can be added to the metering container via a water inlet pipe, and the amount of water added to the metering container can be controlled by the water inlet control assembly. A weighing assembly can measure the weight of the metering container. A controller is electrically connected to the discharge valve, the feed control assembly, the water inlet control assembly, and the weighing assembly.

[0036] When the measuring container does not contain any liquid, an initial weighing value is obtained from the weighing component. A first volume of water is added to the interior of the measuring container through the water inlet pipe, a first weighing value is obtained from the weighing component, and then the water in the measuring container is drained. A first volume of the slurry to be measured is added to the interior of the measuring container through the feed pipe, and a second weighing value is obtained from the weighing component. Since the density of water is 1, under the same volume conditions, the density of the slurry to be measured can be calculated based on the initial weighing value, the first weighing value, and the second weighing value. The slurry density measuring device of the present application can automatically measure the density of slurry, has low safety measures requirements, and has high measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0038] Figure 1 is a schematic structural diagram of a slurry density measuring device provided in an embodiment of the present application;

[0039] Figure 2 is a schematic application diagram of a slurry density measuring device provided in an embodiment of the present application when containing a first volume of water;

[0040] Figure 3 This is a schematic application diagram of a slurry density measuring device provided in an embodiment of the present application containing a first volume of slurry to be measured;

[0041] Figure 4 is a schematic flow chart of a slurry density measurement method provided in an embodiment of the present application;

[0042] Figure 5 is a schematic flow chart of a method for adding a first volume of water into a measuring container through a water inlet pipe provided in an embodiment of the present application;

[0043] Figure 6 This is a schematic flow chart of a method for adding a first volume of slurry to be measured into a metering container through a water inlet pipe, as provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0045] The main methods for measuring slurry density in mineral processing include concentration pot measurement, nuclear density measurement, and ultrasonic density measurement. Concentration pot measurement is manual and labor-intensive; nuclear density measurement is radioactive and requires strict safety measures; and ultrasonic density measurement suffers from poor accuracy. Therefore, a slurry density measurement device and method that can simultaneously address these issues is urgently needed.

[0046] In view of this, the embodiments of the present application provide a slurry density measuring device and a slurry density measuring method, which can automatically measure the slurry density, have low requirements for safety measures, and have high measurement accuracy.

[0047] In a first aspect, an embodiment of the present application provides a slurry density measuring device, and the slurry density measuring device provided in the embodiment of the present application is used to measure the density of mineral slurry. Figure 1 This is a schematic structural diagram of a slurry density measuring device provided in an embodiment of the present application. The slurry density measuring device includes a metering container 10, which has a receiving cavity for containing liquid. A liquid inlet can be provided on the metering container 10, and liquid can enter the receiving cavity of the metering container 10 from the liquid inlet. Figure 1 As shown, the top of the measuring container 10 may also be open, making it more convenient to pour liquid into the measuring container 10 .

[0048] The metering container 10 is provided with a discharge valve 101. When the discharge valve 101 is opened, the liquid in the containing chamber of the metering container 10 can be drained through the discharge valve 101. Therefore, the discharge valve 101 can be located at the bottom of the metering container 10, allowing the liquid to be drained by gravity. The discharge valve 101 can also be located elsewhere than at the bottom of the metering container 10. For example, the discharge valve 101 can be located on the side of the metering container 10, and the liquid in the metering container 10 can then be drained using a water pump.

[0049] like Figure 1As shown, the slurry density measuring device of the present application further includes a feed pipe 20, one end of which is connected to the metering container 10. The slurry to be measured can be added to the metering container 10 through the feed pipe 20. The slurry to be measured is the ore slurry whose density is to be measured. The other end of the feed pipe 20 can be connected to a container containing the slurry to be measured.

[0050] The feed pipe 20 is provided with a feed control assembly 30, which can control the amount of liquid of the slurry to be measured added to the metering container 10. The feed control assembly 30 can be a liquid pump, and by controlling the switch of the liquid pump, the amount of liquid of the slurry to be measured added to the metering container 10 can be controlled.

[0051] like Figure 1 As shown, the slurry density measuring device of the present application further includes a water inlet pipe 40. One end of the feed pipe 20 is connected to the metering container 10, and water can be added to the interior of the metering container 10 through the water inlet pipe 40. The other end of the water inlet pipe 40 can be connected to a container containing water.

[0052] The water inlet pipe 40 is provided with a water inlet control assembly 50, which can be used to control the amount of water added to the measuring container 10. The water inlet control assembly 50 can also be a water pump, and the amount of water added to the measuring container 10 can be controlled by controlling the switch of the water pump.

[0053] It should be noted that the water inlet pipe 40 and the feed pipe 20 are connected to the metering container 10, which means that the water inlet pipe 40 and the feed pipe 20 are connected to the metering container 10, and the liquid in the water inlet pipe 40 and the feed pipe 20 can flow into the metering container 10. In addition, the water inlet pipe 40 and the feed pipe 20 themselves do not generate pressure on the metering container 10, and therefore have no effect on the weighing of the metering container 10. Specifically, the ends of the water inlet pipe 40 and the feed pipe 20 can be suspended on the top of the metering container 10. The liquid in the water inlet pipe 40 and the feed pipe 20 falls into the interior of the metering container 10 under the action of gravity.

[0054] like Figure 1 As shown, the slurry density measuring device of the present application further includes a weighing component 60, which can measure the weight of the measuring container 10. The measured weight of the measuring container 10 may include the weight of the measuring container 10 before water is added to the measuring container 10, the weight of the measuring container 10 after water is added to the measuring container 10, and the weight of the measuring container 10 after the slurry to be measured is added to the measuring container 10.

[0055] The slurry density measuring device of the present application also includes a controller, which is electrically connected to the discharge valve, the feed control assembly, the water inlet control assembly, and the weighing assembly. In other words, the controller can receive signals from the weighing assembly and then control the opening and closing of the discharge valve, the feed control assembly, and the water inlet control assembly.

[0056] The working process of the slurry density measuring device of the present application includes:

[0057] Before adding water into the measuring container 10 , the controller obtains an initial weighing value V0 from the weighing component 60 . Therefore, the initial weighing value V0 is a value detected by the weighing component when there is no liquid in the measuring container.

[0058] A first volume of water is added to the measuring container 10 through the water inlet pipe 40. The amount of water added to the measuring container can be controlled by the water inlet control assembly 50. For example, the water inlet control assembly 50 may include an inlet valve and a water meter. When the water meter detects that the amount of water passing through has reached the first volume, it sends a water level signal to the controller. After receiving the water level signal, the controller sends a closing signal to the inlet valve, which closes in response to the closing signal, thereby stopping the addition of water to the measuring container 10. This achieves the addition of the first volume of water to the measuring container 10.

[0059] It should be noted that the discharge valve 101 is in a closed state at this time, so that the measuring container 10 can hold water.

[0060] The controller obtains the first weighing value V1 from the weighing assembly 60. The first weighing value V1 is the value detected by the weighing assembly 60 when the first volume of water is contained in the measuring container 10. Then, the discharge valve 101 is controlled to open so that the water in the measuring container 10 is completely drained. A liquid detector can be set in the discharge valve 101. If no liquid is detected, it means that the liquid in the measuring container 10 has been completely drained. Or Figure 1 As shown, the discharge valve 101 is provided at the bottom of the metering container 10. When the discharge valve 101 no longer detects liquid passing through, it indicates that the liquid in the metering container 10 has been completely discharged. The discharge valve 101 can send this signal to the controller. The controller controls the discharge valve 101 to close according to the signal.

[0061] Then, a first volume of the slurry to be measured is added to the metering container 10 through the feed pipe 20, wherein the amount of the liquid to be measured added to the metering container 10 is controlled by the feed control component 30. For example, the feed control component 30 may also include a feed valve and a liquid meter. When the liquid meter detects that the amount of liquid passing through has reached the first volume, it sends a liquid amount signal to the controller. After receiving the liquid amount signal, the controller sends a closing signal to the feed valve, which closes according to the closing signal to stop the addition of the slurry to be measured to the metering container 10. In this way, the first volume of the slurry to be measured can be added to the metering container 10.

[0062] It should be noted that the discharge valve 101 is in a closed state at this time, so that the measuring container 10 can hold the slurry to be measured.

[0063] The controller obtains the second weighing value V2 from the weighing component 60 , so the second weighing value V2 is the value detected by the weighing component 60 when the measuring container 10 contains the first volume of the slurry to be measured.

[0064] The initial weighing value V0 is actually the weight of the measuring container 10 itself. Therefore, V1 minus V0 is the weight of the first volume of water, and V2 minus V0 is the weight of the first volume of the slurry to be measured. Since the density of water is 1, under the condition of equal volume, the density of the slurry to be measured can be calculated as:

[0065]

[0066] The slurry density measuring device of the present application includes a metering container 10, which is provided with a discharge valve 101. When the discharge valve 101 is opened, the liquid in the metering container 10 can be discharged through the discharge valve 101. The slurry to be measured can be added to the interior of the metering container 10 through the feed pipe 20, and the amount of the slurry to be measured added to the metering container 10 can be controlled by the feed control assembly 30. Water can be added to the interior of the metering container 10 through the water inlet pipe 40, and the amount of water added to the metering container 10 can be controlled by the water inlet control assembly 50. A weighing assembly 60 can measure the weight of the metering container 10. A controller is electrically connected to the discharge valve 101, the feed control assembly 30, the water inlet control assembly 50, and the weighing assembly 60.

[0067] When the measuring container 10 does not contain any liquid, an initial weighing value is obtained from the weighing assembly 60. A first volume of water is added to the inside of the measuring container 10 through the water inlet pipe 40, a first weighing value is obtained from the weighing assembly 60, and then the water in the measuring container 10 is drained. A first volume of slurry to be measured is added to the inside of the measuring container 10 through the feed pipe 20, and a second weighing value is obtained from the weighing assembly 60. Since the density of water is 1, under the same volume conditions, the density of the slurry to be measured can be calculated based on the initial weighing value, the first weighing value and the second weighing value. The slurry density measuring device of the present application does not require manual intervention throughout the process, can automatically measure the slurry density, has low requirements for safety measures, and has high measurement accuracy.

[0068] In some embodiments, as Figure 1 As shown, the feed control assembly 30 includes a sampling valve 301 having three ports, which are sequentially connected to the feed pipe 20, the feed pipe 302, and the discharge pipe 303. The other end of the feed pipe 302 is connected to the slurry container to be measured (i.e., the container containing the slurry to be measured). By switching the state of the sampling valve 301, the feed pipe 302 can be connected to the feed pipe 20 or the discharge pipe 303.

[0069] The sampling valve 301 can be a quick three-way shut-off valve, which can be switched to connect the feeding pipe 302 with the feed pipe 20 by switching the connection state. In this way, the slurry to be measured in the slurry container to be measured can flow through the feeding pipe 302 through the sampling valve 301 into the feed pipe 20, and then flow from the feed pipe 20 into the metering container 10. Alternatively, the feeding pipe 302 can be switched to connect with the discharge pipe 303. In this way, the slurry to be measured in the slurry container to be measured can flow through the feeding pipe 302 through the sampling valve 301 into the discharge pipe 303, and then be discharged from the discharge pipe 303. This can facilitate the discharge of the slurry to be measured remaining in the feeding pipe 302 from the feeding pipe 302, and prevent the slurry to be measured from solidifying in the feeding pipe 302, which may cause blockage of the feeding pipe 302.

[0070] It should be noted that the sampling valve 301 can also switch the feeding pipe 302 to connect with the discharge pipe 303 and the feed pipe 20 at the same time. During the density measurement process for corrosive liquids (such as strong acid and strong base liquids), it is necessary to avoid excessive pressure inside the feed pipe 20 to prevent the corrosive liquid from splashing. Therefore, if the internal pressure of the feeding pipe 302 is relatively high, the sampling valve 301 can switch the feeding pipe 302 to connect with the discharge pipe 303 and the feed pipe 20 at the same time. In this way, the density slurry to be measured can flow from the feeding pipe 302 into the discharge pipe 303 and the feed pipe 20 at the same time. This reduces the internal pressure of the feed pipe 20 and prevents liquid splashing.

[0071] In some embodiments, as Figure 1 As shown, the feeding pipe 302 is provided with a valve anti-blocking assembly 304, which includes an anti-blocking pipe 3041 and an anti-blocking valve 3042. One end of the anti-blocking pipe 3041 is connected to a water container (not shown), and the other end of the anti-blocking pipe 3041 is connected to the feeding pipe 302. The anti-blocking valve 3042 is provided on the anti-blocking pipe 3041. One end of the anti-blocking pipe 3041 can be connected to a high-pressure water pipe. The feeding pipe 302 is also provided with a main control valve 3021, which can control the on and off of the feeding pipe 302. The feeding pipe 302 can also be provided with a manual discharge valve 3022, which can be manually controlled to be on and off. During the automatic measurement of the slurry density, the manual discharge valve 3022 can remain in a normally open state. The anti-clogging valve 3042 can be turned on and off by the controller to perform timed valve and pipeline cleaning to prevent the manual discharge valve 3022 and the main control valve 3021 from being blocked due to long measurement intervals.

[0072] In some embodiments, as Figure 1 As shown, the slurry density measuring device further includes an overflow pipe 102. An overflow port 103 is provided on the measuring container 10. The overflow pipe 102 communicates with the interior of the measuring container 10 through the overflow port 103. Thus, when the level of the water or the slurry to be measured in the measuring container 10 reaches the overflow port 103, the water can flow out from the overflow port 103 through the overflow pipe 102. This ensures that the volumes of the water and the slurry to be measured flowing into the measuring container 10 are always the same, without the need for an additional volume measurement device.

[0073] Figure 2 : is a schematic application diagram of a slurry density measuring device provided in an embodiment of the present application when a first volume of water is contained. Figure 2 As shown, when water is injected into the measuring container 10 through the water inlet pipe 40, when the height of the water in the measuring container 10 exceeds the overflow port 103, the water in the measuring container 10 will flow out from the overflow pipe 102, so that the height of the water in the measuring container 10 always remains below the overflow port 103. At this time, the volume of the water in the measuring container 10 is the first volume.

[0074] Figure 3 : This is a schematic application diagram of a slurry density measuring device provided in an embodiment of the present application containing a first volume of slurry to be measured. Figure 3As shown, when the slurry to be measured is injected into the metering container 10 through the feed pipe 20, when the height of the slurry to be measured in the metering container 10 exceeds the overflow port 103, the slurry to be measured in the metering container 10 will flow out from the overflow pipe 102, so that the height of the slurry to be measured in the metering container 10 always remains below the overflow port 103. At this time, the volume of the slurry to be measured in the metering container 10 is the first volume.

[0075] In some embodiments, as Figure 1 As shown, a liquid level measuring element 104 is provided on the overflow pipe 102. The liquid level measuring element 104 can detect the liquid flowing through the overflow pipe 102 and then send a detection signal to the controller.

[0076] For example, Figure 2 As shown, when water is injected into the measuring container 10 through the water inlet pipe 40, when the water level in the measuring container 10 exceeds the overflow port 103, the water in the measuring container 10 will flow out of the overflow pipe 102. At this time, the liquid level measuring element 104 detects that the liquid is flowing through the overflow pipe 102 and sends a detection signal to the controller, which can control the water inlet control assembly 50 to close, so that water is no longer injected into the measuring container 10 from the water inlet pipe 40.

[0077] like Figure 3 As shown, when the slurry to be measured is injected into the metering container 10 through the feed pipe 20, when the level of the slurry to be measured in the metering container 10 exceeds the overflow port 103, the slurry to be measured in the metering container 10 will flow out of the overflow pipe 102. At this time, the liquid level measuring element 104 detects that the liquid is flowing through the overflow pipe 102 and sends a detection signal to the controller. The controller can control the feed control assembly 30 to close, so that the slurry to be measured is no longer injected into the metering container 10 from the feed pipe 20.

[0078] In some embodiments, as Figure 1 As shown, the weighing assembly 60 includes a weighing frame 601 and a weighing sensor 602. The weighing frame 601 is used to support the measuring container 10. The weighing sensor 602 is mounted on the weighing frame 601 and can measure the weight of the measuring container 10. Specifically, a supporting protrusion can be provided on the side of the measuring container 10, and the bottom of the supporting protrusion contacts the weighing frame 601. The contact between the supporting protrusion and the weighing frame 601 enables the weighing frame to support the measuring container 10, and then the weighing sensor 602 disposed on the measuring container 10 can measure the weight of the measuring container 10.

[0079] In some embodiments, a nozzle can be provided at one end of the water inlet pipe 40 connected to the measuring container 10. After the slurry density measurement is completed, the discharge valve 101 can be opened to discharge the slurry to be measured from the measuring container 10. After the slurry to be measured has been completely discharged from the measuring container 10, the water inlet control assembly can be opened to inject water into the measuring container 10 again through the water inlet pipe 40. Under the action of the impulse of the nozzle, the measuring container 10 is flushed to prevent the slurry to be measured from remaining in the measuring container 10. This prepares for the next slurry density measurement and further improves the accuracy of the slurry density measurement.

[0080] In a second aspect, the present invention provides a method for measuring slurry density. Figure 4 : is a schematic flow chart of a slurry density measurement method provided in an embodiment of the present application. The slurry density measurement method includes:

[0081] In step S101 , an initial weighing value is obtained from a weighing component. The initial weighing value is a value detected by the weighing component when there is no liquid in the measuring container 10 . The initial weighing value V0 may actually be the weight of the measuring container 10 itself.

[0082] In step S102, a first volume of water is added to the measuring container 10 via the water inlet pipe 40. The amount of water added to the measuring container 10 is controlled by the water inlet control assembly 50. The addition of the first volume of water to the measuring container 10 can be controlled by the water inlet valve and water meter of the water inlet control assembly 50. Alternatively, an overflow port 103 can be provided on the side of the measuring container 10 to discharge liquid through the overflow pipe 102, so that the measuring container 10 can hold a maximum of the first volume of liquid.

[0083] Step S103 , obtaining a first weighing value V1 from the weighing component 60 , where the first weighing value V1 is a value detected by the weighing component when a first volume of water is contained in the measuring container 10 .

[0084] Step S104, control the discharge valve 101 to open, and when it is detected that the water inside the measuring container is drained, control the discharge valve to close. A liquid detector can be set in the discharge valve 101, and if no liquid is detected, it means that the liquid in the measuring container 10 has been drained. Or Figure 1 As shown, the discharge valve 101 is provided at the bottom of the metering container 10. When the discharge valve 101 no longer detects liquid passing through, it indicates that the liquid in the metering container 10 has been completely discharged. The discharge valve 101 can send this signal to the controller. The controller controls the discharge valve 101 to close according to the signal.

[0085] Step S105 , adding a first volume of the slurry to be measured into the metering container 10 through the feed pipe 20 , wherein the amount of the slurry to be measured added into the metering container 10 is controlled by the feed control component 30 .

[0086] The feed control assembly 30 may also include a feed valve and a liquid meter. When the liquid meter detects that the amount of liquid passing through has reached a first volume, it sends a liquid volume signal to the controller. Upon receiving the liquid volume signal, the controller sends a close signal to the feed valve, which closes in response to the close signal, thereby stopping the addition of the slurry to be measured into the metering container 10. This allows the first volume of the slurry to be measured to be added to the metering container 10. Alternatively, the slurry to be measured can be discharged through the overflow pipe 102, so that the metering container 10 can hold a maximum of the first volume of the slurry to be measured, thereby controlling the addition of the first volume of the slurry to be measured into the metering container 10.

[0087] Step S106 , obtaining a second weighing value V2 from the weighing component 60 , where the second weighing value V2 is a value detected by the weighing component 60 when the measuring container 10 contains a first volume of the slurry to be measured.

[0088] Step S107 , calculating the density of the slurry to be measured according to the initial weighing value, the first weighing value, and the second weighing value.

[0089] The initial weighing value V0 is actually the weight of the measuring container 10 itself. Therefore, V1 minus V0 is the weight of the first volume of water, and V2 minus V0 is the weight of the first volume of the slurry to be measured. Since the density of water is 1, under the condition of equal volume, the density of the slurry to be measured can be calculated as:

[0090]

[0091] Figure 5 is a schematic flow chart of a method for adding a first volume of water to a measuring container through a water inlet pipe provided in an embodiment of the present application. Figure 5 As shown, adding a first volume of water into the metering container 10 through the water inlet pipe 40 may include the following steps:

[0092] Step S501 : Control the water inlet control assembly 50 to open so that water is added into the measuring container 10 through the water inlet pipe 40 .

[0093] In step S502 , when the water in the measuring container 10 flows from the overflow port 103 into the overflow pipe 102 , a first liquid level signal is obtained from the liquid level measuring element 104 , wherein when the water in the measuring container 10 flows from the overflow port 103 into the overflow pipe 102 , the measuring container 10 contains a first volume of water.

[0094] In step S503, according to the first liquid level signal, the water inlet control assembly 50 is controlled to be closed to stop adding water into the measuring container 10 through the water inlet pipe 40. This can not only add the first volume of water into the measuring container 10, but also avoid wasting water resources.

[0095] Figure 6 is a schematic flow chart of a method for adding a first volume of slurry to be measured into a metering container through a water inlet pipe provided in an embodiment of the present application. Figure 6 As shown, adding a first volume of the slurry to be measured into the metering container 10 through the feed pipe 20 may include the following steps:

[0096] Step S601 : Control the feed control assembly 30 to open so that the slurry to be measured is added into the metering container 10 through the feed pipe 20 .

[0097] In step S602, when the slurry to be measured in the metering container 10 flows from the overflow port 103 into the overflow pipe 102, a second liquid level signal is obtained from the liquid level measuring element 104, wherein when the slurry to be measured in the metering container 10 flows from the overflow port 103 into the overflow pipe 102, the metering container 10 contains a first volume of slurry to be measured.

[0098] In step S603, according to the second liquid level signal, the feed control assembly 30 is controlled to be closed to stop adding the slurry to be measured into the metering container 10 through the feed pipe 20. This can not only add the first volume of the slurry to be measured into the metering container 10, but also avoid wasting the slurry to be measured.

[0099] It should be noted that a turbidity sensor can also be provided in the overflow pipe 102. The turbidity sensor can be used to distinguish whether the liquid flowing into the overflow pipe 102 is water or the slurry to be measured. Specifically, when the first liquid level signal or the second liquid level signal is sent to the controller, the corresponding turbidity information can be sent simultaneously. For example, the turbidity information sent simultaneously with the first liquid level signal indicates a lower turbidity, so it can be determined that the liquid flowing through the overflow pipe 102 at this time is water. The turbidity information sent simultaneously with the second liquid level signal indicates a higher turbidity, so it can be determined that the liquid flowing through the overflow pipe 102 at this time is the slurry to be measured. Then, based on the judgment that the liquid type is water, the water inlet control component 50 can be controlled to be closed according to the first liquid level signal, or based on the judgment that the liquid type is the slurry to be measured, the feed control component 30 can be controlled to be closed according to the second liquid level signal.

[0100] In some embodiments, the method further comprises:

[0101] The discharge valve 101 is controlled to open. When it is detected that the slurry to be measured in the metering container 10 is completely discharged, the water inlet control component 50 is controlled to open so that water is added to the metering container 10 through the water inlet pipe 40 .

[0102] A nozzle can also be provided at one end of the water inlet pipe 40 connected to the measuring container 10. After the slurry density measurement is completed, the discharge valve 101 can be opened to discharge the slurry to be measured from the measuring container 10. After the slurry to be measured has been completely discharged from the measuring container 10, the water inlet control assembly can be opened to inject water into the measuring container 10 again through the water inlet pipe 40. Under the impact of the nozzle, the measuring container 10 is flushed to prevent the slurry to be measured from remaining in the measuring container 10. This prepares for the next slurry density measurement and further improves the accuracy of slurry density measurement.

[0103] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0104] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.

[0105] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0106] In the description of this application, “plurality” means two or more.

[0107] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0108] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0109] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0110] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A slurry density measuring device, characterized in that: include: A metering container, wherein the metering container is provided with a discharge valve, and when the discharge valve is opened, the liquid in the metering container can be discharged through the discharge valve; a feed pipe, one end of which is connected to the metering container, through which the slurry to be measured can be added to the interior of the metering container; and a feed control component is provided on the feed pipe, through which the amount of the slurry to be measured added to the metering container can be controlled; a water inlet pipe, one end of which is connected to the measuring container, through which water can be added to the interior of the measuring container; and a water inlet control component is provided on the water inlet pipe, through which the amount of water added to the measuring container can be controlled; a weighing component, wherein the weighing component can measure the weight of the measuring container; A controller is electrically connected to the discharge valve, the feed control component, the water inlet control component and the weighing component respectively.

2. The slurry density measuring device according to claim 1, characterized in that: The feed control assembly includes a sampling valve, which has three ports. The three ports of the sampling valve are connected to the feed pipe, the feeding pipe and the discharge pipe in sequence. The other end of the feeding pipe is connected to the slurry container to be measured. By switching the state of the sampling valve, the feeding pipe can be connected to the feed pipe, or the feeding pipe can be connected to the discharge pipe.

3. The slurry density measuring device according to claim 2, characterized in that: The feeding pipe is provided with a valve anti-clogging assembly, which includes an anti-clogging pipe and an anti-clogging valve. One end of the anti-clogging pipe is connected to the water container, and the other end of the anti-clogging pipe is connected to the feeding pipe. The anti-clogging valve is provided on the anti-clogging pipe.

4. The slurry density measuring device according to claim 2, characterized in that: The feeding pipeline is also provided with a main control valve, and the main control valve can control the on-off of the feeding pipeline.

5. The slurry density measuring device according to claim 1, characterized in that: The slurry density measuring device further comprises an overflow pipe. The metering container is provided with an overflow port. The overflow pipe is communicated with the interior of the metering container through the overflow port.

6. The slurry density measuring device according to claim 5, characterized in that: The overflow pipe is provided with a liquid level measuring component.

7. The slurry density measuring device according to claim 1, characterized in that: The weighing assembly includes a weighing frame and a weighing sensor. The weighing frame is used to support the measuring container. The weighing sensor is arranged on the weighing frame and can measure the weight of the measuring container.

8. A method for measuring slurry density, characterized in that: The method is applied to the slurry density measuring device according to any one of claims 1 to 7, and the slurry density measuring method comprises: Obtaining an initial weighing value from the weighing component, wherein the initial weighing value is a value detected by the weighing component when no liquid is contained in the measuring container; adding a first volume of water into the metering container through a water inlet pipe, wherein the amount of water added into the metering container is controlled by a water inlet control component; obtaining a first weighing value from the weighing component, the first weighing value being a value detected by the weighing component when the measuring container contains the first volume of water; Controlling the discharge valve to open, and controlling the discharge valve to close when detecting that the water inside the measuring container is completely drained; adding the first volume of the slurry to be measured into the metering container through a feed pipe, wherein the amount of the slurry to be measured added into the metering container is controlled by a feed control component; obtaining a second weighing value from the weighing component, wherein the second weighing value is a value detected by the weighing component when the measuring container contains the first volume of the slurry to be measured; The density of the slurry to be measured is calculated according to the initial weighing value, the first weighing value and the second weighing value.

9. The method for measuring slurry density according to claim 8, characterized in that: Adding a first volume of water into the metering container through the water inlet pipe comprises: controlling the water inlet control assembly to open so that water is added into the metering container through the water inlet pipe; When the water in the measuring container flows from the overflow port into the overflow pipe, a first liquid level signal is obtained from the liquid level measuring member, wherein when the water in the measuring container flows from the overflow port into the overflow pipe, the measuring container contains the first volume of water; According to the first liquid level signal, controlling the water inlet control component to close so as to stop adding water into the measuring container through the water inlet pipe; and / or, Adding the first volume of the slurry to be measured into the metering container through a feed pipe comprises: Controlling the feed control assembly to open so that the slurry to be measured is added into the metering container through the feed pipe; When the slurry to be measured in the metering container flows from the overflow port into the overflow pipe, a second liquid level signal is obtained from the liquid level measuring member, wherein when the slurry to be measured in the metering container flows from the overflow port into the overflow pipe, the metering container contains the first volume of the slurry to be measured; According to the second liquid level signal, the feed control component is controlled to be closed, so as to stop adding the slurry to be measured into the metering container through the feed pipe.

10. The method for measuring slurry density according to claim 9, characterized in that: The method further comprises: The discharge valve is controlled to open, and when it is detected that the slurry to be measured in the metering container is completely discharged, the water inlet control component is controlled to open, so that water is added to the metering container through the water inlet pipe.

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