Online sampling and measuring device for flowing slurry

Abstract

The invention discloses an online sampling and measuring device for flowing slurry. The online sampling and measuring device comprises a T-shaped three-way pipe, an online sampling mechanism and a measuring mechanism, the on-line sampling mechanism comprises a first support frame, a switch gate valve connected with the T-shaped three-way pipe, a lower communicating pipe arranged at the lower part of the switch gate valve, an upper top plate arranged at the top of the first support frame and used for blocking the lower part of the lower communicating pipe, and a sampling pipe assembly of which the upper part is arranged in the lower communicating pipe; the lifting mechanism is arranged on the first supporting frame and drives the top of the sampling pipe assembly to be inserted into the T-shaped three-way pipe; after the switch gate valve is opened, the top of the sampling pipe assembly is driven by the lifting mechanism to be inserted into the T-shaped three-way pipe, and after the sampling pipe assembly reaches a designated position, the sampling valve is opened to execute sampling action; the measuring mechanism comprises a transverse pipe, a slurry flow meter which is arranged at an inlet of the transverse pipe and is connected with the lower part of the sampling pipe assembly through a high-pressure hose, and a plurality of stirring and weighing kettle assemblies which are arranged on the second support frame and are connected with the transverse pipe.

Description

Technical Field

[0001] This invention relates to the field of slurry sampling and measurement technology, and in particular to an online sampling and measurement device for flowing slurry. Background Technology

[0002] The flowing slurry in this technology mainly refers to mineral slurry and mud. Among them, parameters such as metal grade, particle size, concentration, and pH value in the mineral slurry (mud) directly affect the beneficiation efficiency. Furthermore, slurry transported for extended periods in pipelines may exhibit concentration variations at different heights. Therefore, sampling and measuring the flowing slurry is particularly important. Currently, existing flowing slurry sampling techniques, such as those described in "Publication No. CN222825306U, Title: A Deep Mineral Slurry Sampler" or "Publication No. CN222866292U, Title: A Mineral Slurry Sampling Device," employ an offline method, inserting the sampler to a specified sampling depth or location. This approach cannot achieve reliable online measurement, and the measurements are influenced by sampling experience.

[0003] Furthermore, in the disclosed technology "CN119827235A, entitled 'A Gold Slurry Sampling Device for Gold Mines'", a cross-shaped four-way pipe is included. The two ends of the four-way pipe on one axis are the slurry inlet and outlet, respectively, and the two ends on the other axis are sampling ports. Both sampling ports are sealed and fixedly equipped with cover plates, and discharge ports are provided on the opposite sides of the two cover plates, each discharge port being connected to a solenoid valve. A piston is sealed and slides within each of the two sampling ports. This technology uses a fixed sampling port, meaning that during sampling, only slurry samples can be taken from a designated location within the pipe; it cannot flexibly sample from the upper or lower end of the pipe. Since the concentration of the gold slurry varies at different heights during transport, subsequent sampling and measurement at fixed locations will inevitably introduce certain errors.

[0004] Furthermore, in the patent application CN219434398U, entitled "An Online Sampling and Measurement System Applicable to Multi-Scenario Slurry Pipelines," the online monitoring equipment is deployed on the transmission pipeline. While this allows for online monitoring, the sampling location remains fixed, interfering with the normal transmission of the slurry (e.g., for component replacement during maintenance). This method can only achieve flow performance testing and cannot measure weight performance, etc.

[0005] Therefore, there is an urgent need to propose an online sampling and measurement device for flowing slurry that is simple in structure and reliable in sampling. Summary of the Invention

[0006] To address the above problems, the present invention aims to provide an online sampling and measurement device for flowing slurry. The technical solution adopted by the present invention is as follows: An online sampling and measuring device for flowing slurry is connected to a pipeline for transporting flowing slurry and performs online sampling. It includes a T-shaped tee pipe connected to the pipeline for transporting flowing slurry, an online sampling mechanism connected to the T-shaped tee pipe, and a measuring mechanism connected to the online sampling mechanism. The online sampling mechanism includes a first support frame, a switch valve connected to a T-shaped tee pipe, a lower connecting pipe located below the switch valve, an upper top plate located on top of the first support frame and sealing the lower part of the lower connecting pipe, a sampling tube assembly placed inside the lower connecting pipe, and a lifting mechanism located on the first support frame and driving the top of the sampling tube assembly into the T-shaped tee pipe; after the switch valve is opened, the lifting mechanism drives the top of the sampling tube assembly into the T-shaped tee pipe. The measuring mechanism includes a second support frame and a third support frame, a horizontal pipe mounted on the third support frame, a slurry flow meter mounted at the inlet of the horizontal pipe and connected to the lower part of the sampling tube assembly via a high-pressure hose, and several stirring and weighing vessel assemblies mounted on the second support frame and connected to the horizontal pipe; several weighing sensors are mounted on the second support frame; the weighing sensors weigh the stirring and weighing vessel assemblies.

[0007] Furthermore, the sampling tube assembly includes a sampling outer tube that is sealed and slidably sleeved on the upper top plate, a sampling connecting tube located at the lower part of the sampling outer tube and connected to the slurry flow meter via a high-pressure hose, a sampling valve located at the top of the sampling outer tube and placed inside the lower connecting pipe, an inner rod drive motor located at the lower part of the sampling outer tube, and an inner rod located inside the sampling outer tube and connecting the sampling valve and the inner rod drive motor; the inner rod drive motor drives the sampling valve to open and close; the sampling outer tube is connected to a lifting mechanism.

[0008] Furthermore, the sampling valve includes an outer cover mounted on the sampling outer tube, a first inlet on the outer cover, an inner valve body fitted inside the outer cover and connected to the top of the inner rod, and a second inlet on the inner valve body; the inner rod drive motor drives the inner valve body to rotate, and the second inlet and the first inlet are connected to the inner cavity of the sampling outer tube.

[0009] Furthermore, the lifting mechanism includes a lower support platform and a middle support platform fixed on the first support frame, a worm gear screw jack and a lifting drive motor fixed on the lower support platform, a lead screw threadedly connected to the worm gear screw jack and passing through the middle support platform, a tree root sliding guide rod disposed between the middle support platform and the upper top plate, a sliding sleeve sleeved on the sliding guide rod, a lifting platform disposed on the sliding sleeve and connected to the top of the lead screw, and a tree root lower connecting rod disposed at the bottom of the lifting platform and connected to the housing of the inner rod drive motor; the lifting drive motor drives the worm gear screw jack, and the lead screw pushes the lifting platform to slide along the sliding guide rod.

[0010] Furthermore, the mixing and weighing vessel assembly includes a weighing measuring vessel fixed on a weighing sensor, a weighing measuring vessel cover disposed on the weighing measuring vessel, a vessel body connecting cover disposed between the weighing measuring vessel and the weighing measuring vessel cover, and a weighing feed valve disposed between the weighing measuring vessel cover and the horizontal tube.

[0011] Furthermore, a stirring motor is provided on the upper cover of the weighing and measuring vessel; a stirring blade is provided at the lower part of the stirring motor; the stirring blade extends into the weighing and measuring vessel.

[0012] Furthermore, it also includes a cleaning mechanism; the cleaning mechanism includes a water tank, a water pump installed in the water tank, and a wastewater tank installed in a second support frame; the water pump is connected to the online sampling mechanism; the wastewater tank is connected to the online sampling mechanism and the measuring mechanism by pipeline.

[0013] Furthermore, the lower connecting pipe is provided with an upper flushing inlet pipe and a wastewater discharge pipe; the sampling tube assembly is provided with a lower flushing inlet pipe; the upper flushing inlet pipe and the lower flushing inlet pipe are connected to a water pump; the wastewater discharge pipe is connected to a wastewater tank; a first wastewater inlet valve is provided between the wastewater discharge pipe and the wastewater tank; a second wastewater inlet valve is provided at the outlet of the stirring weighing vessel assembly; the second wastewater inlet valve is connected to the wastewater tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a T-shaped tee pipe connected to the pipeline for transporting flowing slurry, and includes a switch valve, a lower connecting pipe, a sampling tube assembly, and a lifting mechanism. When online sampling is required, the switch valve is opened, and the lifting mechanism inserts the top of the sampling tube assembly into the T-shaped tee pipe for online sampling. After sampling, the top of the sampling tube assembly is retracted into the lower connecting pipe, and the switch valve can be closed. The operation is simple, enables online sampling, and has no impact on the transport of the flowing slurry.

[0015] This invention ensures sampling reliability by setting up an inner rod drive motor, a sampling outer tube, an inner rod, and a sampling valve, and by using the inner rod drive motor to drive the sampling valve to open and close.

[0016] This invention ensures reliable sampling, weighing, and flow measurement by incorporating a slurry flow meter, a weighing sensor, a weighing vessel, a stirring motor, and stirring blades.

[0017] This invention ensures the accuracy and reliability of each sampling measurement by setting up a cleaning mechanism to flush the lower connecting pipe, sampling outer pipe, inner rod, sampling valve, slurry flow meter, and weighing measuring vessel.

[0018] In summary, this invention has the advantages of simple structure, reliable operation, and accurate measurement, and has high practical and promotional value in the field of slurry sampling and measurement technology. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of the present invention from a first angle.

[0021] Figure 2 This is a structural schematic diagram of the second angle of the present invention.

[0022] Figure 3 This is a schematic diagram of the online sampling mechanism of the present invention.

[0023] Figure 4 This is a cross-sectional schematic diagram of the online sampling mechanism of the present invention.

[0024] Figure 5 for Figure 4 A magnified view of a portion of the image.

[0025] Figure 6 This is a partial schematic diagram of the online sampling mechanism of the present invention.

[0026] Figure 7 This is a cross-sectional schematic diagram of the sampling section of the present invention.

[0027] Figure 8 This is a schematic diagram of the sampling section of the present invention.

[0028] Figure 9 This is a schematic diagram of the measuring mechanism of the present invention.

[0029] In the above figures, the component names corresponding to the reference numerals are as follows: 100. T-shaped tee pipe; 200. Online sampling mechanism; 300. Measuring mechanism; 400. Water tank; 401. Water pump; 201. First support frame; 2011. Upper top plate; 202. Lower support platform; 203. Middle support platform; 204. Worm gear screw jack; 205. Screw; 206. Lifting drive motor; 207. Lifting platform; 208. Sliding guide rod; 209. Sliding sleeve; 210. Switch valve; 211. Lower connecting pipe; 212. Lower connecting rod; 213. Inner rod drive motor; 214. Sampling outer pipe; 215. Inner rod; 216. Sampling valve; 2161. Outer cover; 216 11. First feed inlet; 2162. Inner valve body; 21621. Second feed inlet; 217. Upper flushing water inlet pipe; 218. Lower flushing water inlet pipe; 219. Sampling connection pipe; 220. Wastewater discharge pipe; 301. Second support frame; 302. Third support frame; 303. Slurry flow meter; 304. Horizontal pipe; 305. Weighing feed valve; 306. Weighing measuring vessel cover; 307. Vessel body connecting cover; 308. Stirring motor; 309. Weighing sensor; 310. Weighing measuring vessel; 311. Stirring blade; 312. Wastewater tank; 313. First wastewater feed valve; 314. Second wastewater feed valve. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0031] In this embodiment, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0032] The terms "first" and "second," etc., used in the specification and claims of this embodiment are used to distinguish different objects, not to describe a specific order of objects. For example, "first target object" and "second target object," etc., are used to distinguish different target objects, not to describe a specific order of target objects.

[0033] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0034] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more. For example, multiple processing units means two or more processing units; multiple systems means two or more systems.

[0035] like Figures 1 to 9 As shown, this embodiment provides an online sampling and measurement device for flowing slurry, which is connected to the pipeline for transporting the flowing slurry and performs online sampling and measurement. It does not affect the transport of the flowing slurry; when sampling and measurement are required, the online sampling mechanism 200 can be used for sampling. Here, the online sampling and measurement device for flowing slurry includes a T-shaped tee pipe 100 connected to the pipeline for transporting the flowing slurry, an online sampling mechanism 200 connected to the T-shaped tee pipe 100, a measuring mechanism 300 connected to the online sampling mechanism 200, and a cleaning mechanism connected to the online sampling mechanism 200.

[0036] Here, the online sampling mechanism 200 is connected to the T-shaped tee pipe 100. The online sampling mechanism 200 includes a first support frame 201, a switch valve 210 connected to the T-shaped tee pipe 100, a lower connecting pipe 211 located below the switch valve 210, an upper top plate 2011 located on top of the first support frame 201 and sealing the lower part of the lower connecting pipe 211, a sampling tube assembly placed inside the lower connecting pipe 211, and a lifting mechanism located on the first support frame 201 that drives the top of the sampling tube assembly into the T-shaped tee pipe 100. When not sampling, the switch valve 210 is closed, and the top of the sampling tube assembly is placed inside the lower connecting pipe 211. When sampling is required, the switch valve 210 is opened, and the lifting mechanism drives the top of the sampling tube assembly into the T-shaped tee pipe 100 to perform the sampling operation.

[0037] In this embodiment, to enable sampling after the sampling tube assembly is inserted into the preset position of the T-shaped tee pipe 100, the sampling tube assembly includes a sampling outer tube 214 that is sealed and slidably sleeved on the upper top plate 2011; a sampling connecting pipe 219 located at the lower part of the sampling outer tube 214 and connected to the slurry flow meter 303 via a high-pressure hose; a sampling valve 216 located at the top of the sampling outer tube 214 and placed inside the lower connecting pipe 211; an inner rod drive motor 213 located at the lower part of the sampling outer tube 214; and an inner rod 215 located inside the sampling outer tube 214 and connecting the sampling valve 216 and the inner rod drive motor 213. Here, the inner rod drive motor 213 drives the sampling valve 216 to open and close, so as to facilitate sampling at the preset position point. The sampling valve 216 in this embodiment includes an outer cover 2161 covering the sampling outer tube 214, a first inlet 21611 opened on the outer cover 2161, an inner valve body 2162 sleeved inside the outer cover 2161 and connected to the top of the inner rod 215, and a second inlet 21621 opened on the inner valve body 2162. Here, the inner rod drive motor 213 drives the inner valve body 2162 to rotate, and makes the second inlet 21621 and the first inlet 21611 connected to the inner cavity of the sampling outer tube 214. The slurry in the T-shaped three-way pipe 100 can enter the sampling outer tube 214 from the second inlet 21621 and the first inlet 21611, and then enter the slurry flow meter 303.

[0038] In this embodiment, in order to achieve reliable lifting and lowering of the sampling tube assembly, the lifting mechanism includes a lower support platform 202 and a middle support platform 203 fixed on the first support frame 201, a worm gear screw jack 204 and a lifting drive motor 206 fixed on the lower support platform 202, a lead screw 205 threadedly connected to the worm gear screw jack 204 and passing through the middle support platform 203, a root sliding guide rod 208 disposed between the middle support platform 203 and the upper top plate 2011, a sliding sleeve 209 sleeved on the sliding guide rod 208, a lifting platform 207 disposed on the sliding sleeve 209 and connected to the top of the lead screw 205, and a root lower connecting rod 212 disposed at the bottom of the lifting platform 207 and connected to the housing of the inner rod drive motor 213. Here, the lifting drive motor 206 drives the worm gear screw jack 204, and the screw 205 pushes the lifting platform 207 to slide along the sliding guide rod 208, thereby causing the sampling tube assembly to slide along the sliding guide rod 208.

[0039] To facilitate cleaning after sampling and ensure measurement accuracy, an upper flushing inlet pipe 217 and a wastewater discharge pipe 220 are installed on the lower connecting pipe 211, and a lower flushing inlet pipe 218 is installed at the lower end of the sampling outer pipe 214. During flushing, the switch valve 210 is in the closed state, and flushing water enters through the upper flushing inlet pipe 217 and the lower flushing inlet pipe 218, and then exits through the wastewater discharge pipe 220. Alternatively, the flushing water can re-enter the slurry flow meter 303 and clean the measuring mechanism 300.

[0040] In this embodiment, the measuring mechanism 300 includes a second support frame 301 and a third support frame 302, a horizontal pipe 304 mounted on the third support frame 302, a slurry flow meter 303 mounted at the inlet of the horizontal pipe 304 and connected to the lower part of the sampling tube assembly via a high-pressure hose, and several stirring and weighing vessel assemblies mounted on the second support frame 301 and connected to the horizontal pipe 304. Several weighing sensors 309 are mounted on the second support frame 301 to weigh the stirring and weighing vessel assemblies. Here, the stirred weighing vessel assembly includes a weighing measuring vessel 310 fixed to the weighing sensor 309, a weighing measuring vessel cover 306 disposed on the weighing measuring vessel 310, a vessel body connecting cover 307 disposed between the weighing measuring vessel 310 and the weighing measuring vessel cover 306, a weighing feed valve 305 disposed between the weighing measuring vessel cover 306 and the horizontal pipe 304, a stirring motor 308 disposed on the weighing measuring vessel cover 306, and a stirring blade 311 disposed at the lower part of the stirring motor 308. The stirring blade 311 extends into the weighing measuring vessel 310. Additionally, a second wastewater feed valve 314 is disposed between the weighing measuring vessel 310 and the wastewater tank 312. It should be noted that this embodiment is based on structural improvements; the measurement and calculation methods of the slurry flow meter 303 and the weighing sensor 309 are conventional and will not be described in detail here.

[0041] In this embodiment, the cleaning mechanism includes a water tank 400, a water pump 401 disposed within the water tank 400, and a wastewater tank 312 disposed within a second support frame 301. The water pump 401 is connected to an upper flushing inlet pipe 217 and a lower flushing inlet pipe 218, and injects cleaning water. Wastewater is then discharged into the wastewater tank 312 using a first wastewater inlet valve 313 and a second wastewater inlet valve 314 for subsequent centralized treatment.

[0042] Here, with Figure 1 or Figure 2 The sampling and measurement process is explained simply by taking an example: This embodiment employs four stirred weighing vessel assemblies, labeled from left to right as stirred weighing vessel assembly number one, stirred weighing vessel assembly number two, stirred weighing vessel assembly number three, and stirred weighing vessel assembly number four. Furthermore, this embodiment samples the upper, middle, and lower layers within the T-shaped tee pipe 100 (i.e., the pipeline for transporting the flowing slurry). Similarly, the number of stirred weighing vessel assemblies is designed according to the number of sampling points.

[0043] First, open the switch valve 210 and use the lifting mechanism to insert the sampling valve 216 into the preset designated position of the T-shaped tee pipe 100. If the upper layer of flowing slurry is to be sampled, the upper layer of the T-shaped tee pipe 100 can be inserted. The sampling of the middle layer and the lower layer can be done in the same way.

[0044] Open sampling valve 216 and the weighing feed valve 305 of the fourth mixing and weighing vessel assembly. The weighing feed valves 305 of the first, second, and third mixing and weighing vessel assemblies are all closed. This ensures that the sampling circuit is filled with the sampled flowing slurry.

[0045] By closing the weighing inlet valve 305 of the fourth mixing and weighing vessel assembly and opening the weighing inlet valve 305 of the first mixing and weighing vessel assembly, the flowing slurry on the upper layer of the T-shaped three-way pipe 100 can enter the first mixing and weighing vessel assembly.

[0046] After sampling the upper layer of flowing slurry, close the weighing inlet valve 305 of the first mixing and weighing vessel assembly, and simultaneously open the weighing inlet valve 305 of the fourth mixing and weighing vessel assembly. Use the lifting mechanism to move the sampling valve 216 to the preset intermediate layer of the T-shaped tee pipe 100, and discharge the upper layer of flowing slurry sampled in the pipe into the fourth mixing and weighing vessel assembly.

[0047] When sampling the flowing slurry in the intermediate layer, close the weighing inlet valve 305 of the fourth mixing and weighing vessel assembly and open the weighing inlet valve 305 of the second mixing and weighing vessel assembly; and so on, sampling can be performed on the flowing slurry in the upper layer of the T-shaped tee pipe 100 stored in the first mixing and weighing vessel assembly, the flowing slurry in the middle layer of the T-shaped tee pipe 100 stored in the second mixing and weighing vessel assembly, and the flowing slurry in the lower layer of the T-shaped tee pipe 100 stored in the third mixing and weighing vessel assembly. During the sampling process, the flow rate is measured using a slurry flow meter 303. The order in which the flowing slurry is stored in the four mixing and weighing vessel assemblies can be adjusted as needed, which will not be elaborated upon here.

[0048] After sampling of the upper, middle and lower layers is completed, the rinsing process can be carried out: the sampling valve 216 is retrieved into the lower connecting pipe 211 using the lifting mechanism, the switch valve 210 is closed, the water pump 401 is started, and the first wastewater inlet valve 313, the second wastewater inlet valve 314, the weighing inlet valve 305, etc. are opened; after rinsing, the next stage of sampling can be carried out.

[0049] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any changes made based on the design principles of the present invention, or any non-creative modifications made thereon, shall fall within the scope of protection of the present invention.

Claims

1. A device for online sampling and measurement of flowing slurry, connected to a pipeline for transporting flowing slurry, and for online sampling, characterized in that, It includes a T-tee pipe (100) connected to a pipeline for transporting flowing slurry, an online sampling mechanism (200) connected to the T-tee pipe (100), and a measuring mechanism (300) connected to the online sampling mechanism (200). The online sampling mechanism (200) includes a first support frame (201), a switch valve (210) connected to a T-shaped tee pipe (100), a lower connecting pipe (211) located at the lower part of the switch valve (210), an upper top plate (2011) located at the top of the first support frame (201) and sealing the lower part of the lower connecting pipe (211), a sampling tube assembly located in the lower connecting pipe (211), and a lifting mechanism located on the first support frame (201) and driving the top of the sampling tube assembly to be inserted into the T-shaped tee pipe (100); after the switch valve (210) is opened, the lifting mechanism drives the top of the sampling tube assembly to be inserted into the T-shaped tee pipe (100); The measuring mechanism (300) includes a second support frame (301) and a third support frame (302), a horizontal pipe (304) mounted on the third support frame (302), a slurry flow meter (303) mounted at the inlet of the horizontal pipe (304) and connected to the lower part of the sampling tube assembly by a high-pressure hose, and several stirring and weighing vessel assemblies mounted on the second support frame (301) and connected to the horizontal pipe (304); several weighing sensors (309) are mounted on the second support frame (301); the weighing sensors (309) weigh the stirring and weighing vessel assemblies.

2. The online sampling and measuring device for flowing slurry according to claim 1, characterized in that, The sampling tube assembly includes a sampling outer tube (214) that is sealed and slidably sleeved on the upper top plate (2011), a sampling connecting tube (219) located at the lower part of the sampling outer tube (214) and connected to the slurry flow meter (303) by a high-pressure hose, a sampling valve (216) located at the top of the sampling outer tube (214) and placed in the lower connecting tube (211), an inner rod drive motor (213) located at the lower part of the sampling outer tube (214), and an inner rod (215) located inside the sampling outer tube (214) and connecting the sampling valve (216) and the inner rod drive motor (213); the inner rod drive motor (213) drives the sampling valve (216) to open and close; the sampling outer tube (214) is connected to the lifting mechanism.

3. The online sampling and measuring device for flowing slurry according to claim 2, characterized in that, The sampling valve (216) includes an outer cover (2161) covering the sampling outer tube (214), a first inlet (21611) opened on the outer cover (2161), an inner valve body (2162) sleeved inside the outer cover (2161) and connected to the top of the inner rod (215), and a second inlet (21621) opened on the inner valve body (2162); the inner rod drive motor (213) drives the inner valve body (2162) to rotate, and the second inlet (21621) and the first inlet (21611) are connected to the inner cavity of the sampling outer tube (214).

4. The online sampling and measuring device for flowing slurry according to claim 2, characterized in that, The lifting mechanism includes a lower support platform (202) and a middle support platform (203) fixed on a first support frame (201), a worm gear screw jack (204) and a lifting drive motor (206) fixed on the lower support platform (202), a screw (205) threadedly connected to the worm gear screw jack (204) and passing through the middle support platform (203), and a root sliding guide rod (208) set between the middle support platform (203) and the upper top plate (2011). A sliding sleeve (209) is provided on the sliding guide rod (208), a lifting platform (207) is provided on the sliding sleeve (209) and connected to the top of the lead screw (205), and a tree root connecting rod (212) is provided at the bottom of the lifting platform (207) and connected to the housing of the inner rod drive motor (213); the lifting drive motor (206) drives the worm gear screw jack (204), and the lead screw (205) pushes the lifting platform (207) to slide along the sliding guide rod (208).

5. The online sampling and measuring device for flowing slurry according to claim 1, characterized in that, The stirring weighing vessel assembly includes a weighing measuring vessel (310) fixed on a weighing sensor (309), a weighing measuring vessel cover (306) disposed on the weighing measuring vessel (310), a vessel body connecting cover (307) disposed between the weighing measuring vessel (310) and the weighing measuring vessel cover (306), and a weighing feed valve (305) disposed between the weighing measuring vessel cover (306) and the horizontal pipe (304).

6. The online sampling and measuring device for flowing slurry according to claim 5, characterized in that, A stirring motor (308) is provided on the upper cover (306) of the weighing measuring vessel; a stirring blade (311) is provided at the lower part of the stirring motor (308); the stirring blade (311) extends into the weighing measuring vessel (310).

7. The online sampling and measuring device for flowing slurry according to claim 1, characterized in that, It also includes a cleaning mechanism; the cleaning mechanism includes a water tank (400), a water pump (401) installed in the water tank (400), and a wastewater tank (312) installed in the second support frame (301); the water pump (401) is connected to the online sampling mechanism (200); the wastewater tank (312) is connected to the online sampling mechanism (200) and the measuring mechanism (300) by pipeline.

8. The online sampling and measuring device for flowing slurry according to claim 7, characterized in that, The lower connecting pipe (211) is provided with an upper flushing inlet pipe (217) and a wastewater discharge pipe (220); the sampling tube assembly is provided with a lower flushing inlet pipe (218); the upper flushing inlet pipe (217) and the lower flushing inlet pipe (218) are connected to a water pump (401); the wastewater discharge pipe (220) is connected to a wastewater tank (312); a first wastewater inlet valve (313) is provided between the wastewater discharge pipe (220) and the wastewater tank (312); a second wastewater inlet valve (314) is provided at the outlet of the stirring weighing vessel assembly; the second wastewater inlet valve (314) is connected to the wastewater tank (312).

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