Telescopic powder sampling device

Abstract

The utility model provides a telescopic powder sampling device. The telescopic powder sampling kit of the telescopic powder sampling device comprises a sampling inner tube, a fixed outer tube and a push-pull driver, wherein a sampling branch tube is arranged at the bottom of the tube wall of the sampling end of the sampling inner tube; a bottle opening of the sampling bottle is embedded in the sampling branch pipe and is communicated with the sampling inner pipe; a sample receiving window is formed in the top of the tube wall of the sample receiving end of the sampling inner tube; the powder conveying paddle is rotationally arranged in the sampling inner pipe; the fixed outer tube is sleeved outside the sampling inner tube in a sliding manner and is arranged between the sampling bottle and the sample receiving window; one end, close to the sample receiving window, of the fixed outer pipe is fixedly connected to a blanking pipeline; the push-pull driver is mounted on the fixed outer pipe, and the power output end of the push-pull driver is connected to the sampling branch pipe. According to the telescopic powder sampling device, the sample receiving window can be timely pushed to retract into the fixed outer pipe after sampling is completed, so that obstruction of the sampling inner pipe to powder in the discharging pipeline can be reduced, and finally the discharging efficiency of the discharging pipeline is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of equipment related to battery material production, and in particular to a powder telescopic sampling device. Background Art

[0002] During the continuous production of battery positive and negative electrode powder materials, as process parameters, formulas, raw materials and other factors change, sampling tests are usually required to evaluate the indicators of the corresponding products, so as to provide technical quality personnel with a reliable basis for judgment.

[0003] Currently, sampling is usually done manually. However, manual sampling has many problems, including the need to shut down the machine and open components such as the discharge pipe or silo for operation, which poses safety and environmental risks. In other words, there are often certain dangerous factors such as pressure, harmful gases, and dust in the system, which can easily cause personal injury or environmental pollution when opening the equipment, especially in the lithium salt and pharmaceutical industries. At the same time, it makes the efficiency of the detection operation low.

[0004] When sampling with the equipment turned on, the material is easily contaminated. For example, products such as ternary materials, iron phosphate, graphite, lithium carbonate, and anhydrous lithium hydroxide easily absorb moisture in the air, causing the material to become damp. Alkaline materials such as lithium hydroxide easily absorb CO2 in the air and deteriorate, making the powder test data unrepresentative.

[0005] To this end, Chinese patent document CN211235080U discloses a new type of particle powder sampler, including a reduction motor, a screw conveyor, a sampling sleeve, a sampling sleeve drive rod, a discharge port, a connector and a protective shell; the protective shell is arranged on the outside of the screw conveyor, and the sampling sleeve is installed between the screw conveyor and the protective shell; the sampling sleeve drive rod and the sampling sleeve are connected into one; the screw conveyor, the sampling sleeve and the protective shell are all provided with sampling ports, the discharge port is arranged at the bottom of the screw conveyor, and the connector connects the protective shell and the sampler screw conveyor into one.

[0006] However, the design of the above-mentioned novel particle powder sampler has the following problems:

[0007] Although the above-mentioned new type of particle powder sampler can perform rapid automatic sampling by inserting the sampling sleeve into the feeding pipe, and the sampling port of the sampling sleeve is pushed and closed by the driving rod, due to the structural design of the feeding sleeve, the sampling sleeve remains inserted into the feeding pipe. After sampling is completed, the powder in the feeding pipe will still collide with the sampling sleeve during the feeding process, which will seriously hinder the normal feeding of the powder and ultimately reduce the feeding speed of the feeding pipe. At the same time, when the sampling port of the sampling sleeve is closed, the powder in the feeding pipe will still enter from the sampling port of the protective shell and remain between the protective shell and the sampling sleeve. It is easy to mix into the next batch of powder when the sampling port of the protective shell is connected with the sampling port of the sampling sleeve during the next sampling, which ultimately reduces the accuracy of powder detection. Utility Model Content

[0008] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a powder telescopic sampling device that can reduce obstacles to powder feeding and reduce mixing of different batches of powder.

[0009] The purpose of this disclosure is achieved through the following technical solutions:

[0010] A powder telescopic sampling device, comprising:

[0011] A powder conveying paddle, which is used to convey powder;

[0012] A sampling bottle, used to collect the powder;

[0013] The powder telescopic sampling device also includes a telescopic powder sampling kit;

[0014] The telescopic powder collection kit includes a sampling inner tube, a fixed outer tube and a push-pull driver. A sampling branch tube is provided at the bottom of the tube wall of the sampling end of the sampling inner tube; the bottle mouth of the sampling bottle is embedded in the sampling branch tube and connected to the sampling inner tube; a sample receiving window is provided at the top of the tube wall of the sample receiving end of the sampling inner tube; the powder delivery paddle is rotatably arranged in the sampling inner tube, and the two ends of the powder delivery paddle extend to the sample receiving window and the sampling branch tube respectively;

[0015] The fixed outer tube is slidably sleeved on the outside of the sampling inner tube and is arranged between the sampling bottle and the sample receiving window; the end of the fixed outer tube close to the sample receiving window is used to be fixedly connected to the discharge pipe; the push-pull driver is installed on the fixed outer tube, and the power output end of the push-pull driver is connected to the sampling branch pipe to push and pull the sample receiving window into the discharge pipe or retract it to the fixed outer tube.

[0016] In one embodiment, the inner wall of the fixed outer tube is provided with a plurality of radial grooves, and the plurality of radial grooves are arranged at intervals around the outer wall of the sampling inner tube, and the outer wall of the sampling inner tube is provided with guide ribs protruding into each of the radial grooves.

[0017] In one embodiment, a rotary driver is fixedly provided at the end of the sampling end of the sampling inner tube, and a power output end of the rotary driver is connected to the transmission central shaft of the powder conveying paddle.

[0018] In one embodiment, an air sealing mechanism is further provided between the end of the sampling end of the sampling inner tube and the rotary driver;

[0019] The air sealing mechanism includes an air cylinder and an outer bracket, the air cylinder is arranged in the outer bracket; the end of the sampling end of the sampling inner tube is connected to the first end of the outer bracket, and the rotation driver is fixedly arranged at the second end of the outer bracket; the transmission center shaft passes through the first end of the outer bracket, the inner tube of the air cylinder and the second end of the outer bracket in sequence, and is connected to the power output end of the rotation driver.

[0020] In one embodiment, the outer bracket includes a connecting support plate, a driving mounting plate and a plurality of connecting struts;

[0021] An embedding interface is provided on the connecting support plate, and a docking port and an axial opening are respectively provided at opposite ends of the inner cylinder wall of the air storage cylinder. A communicating port is provided at the end of the sampling end of the sampling inner tube, and the docking port is embedded in the first side of the embedding interface, and the communicating port is embedded in the second side of the embedding interface, and the docking port is docked and connected to the communicating port; a sleeve is provided on the driving mounting plate, and the sleeve is sleeved on one end of the air storage cylinder close to the axial opening, and the rotating driver is installed on the driving mounting plate; a plurality of connecting struts are arranged around the air storage cylinder, and the two ends of each connecting strut are respectively connected to the connecting support plate and the driving mounting plate; the transmission center shaft is connected to the power output end of the rotating driver through the communicating port, the docking port, the inner cylinder of the air storage cylinder and the axial opening in sequence.

[0022] In one embodiment, the transmission central shaft is rotatably connected to the docking port through a first sealed bearing, and the transmission central shaft is rotatably connected to the through-axis opening through a second sealed bearing; the first sealed bearing is sealedly connected in the docking port, and the second sealed bearing is sealedly connected in the through-axis opening, so that the inner cylinder of the air storage cylinder forms a blocking air cavity.

[0023] In one embodiment, the powder conveying paddle includes a connected stirring and conveying spiral blade and a transmission shaft, the stirring and conveying spiral blade extends spirally along the axial direction of the transmission shaft, the head end of the stirring and conveying spiral blade extends to the sample receiving window, and the tail end of the stirring and conveying spiral blade extends to the sampling branch pipe.

[0024] In one embodiment, a discharge port is provided at the end of the sample receiving end of the sampling inner tube, a supporting beam is fixed at the discharge port, and the supporting beam is rotatably connected to the transmission central shaft through a supporting bearing, and the end of the head end of the stirring and conveying spiral blade is close to the discharge port.

[0025] In one embodiment, the sample receiving window includes a connected rectangular opening and an arc-shaped opening; the rectangular opening is opened at the top of the tube wall of the sample receiving end of the sampling inner tube along the axial direction of the transmission center axis, and the arc-shaped opening is opened at the top of the tube wall of the sample receiving end of the sampling inner tube along the radial direction of the transmission center axis; the rectangular opening is connected to the discharge port, and the arc-shaped opening is arranged at the end of the rectangular opening away from the discharge port.

[0026] In one embodiment, a filter respirator is provided on the inner wall of the sampling bottle.

[0027] Compared with the prior art, the present disclosure has at least the following advantages:

[0028] 1) Because the fixed outer tube is slidably sleeved outside the sampling inner tube and is arranged between the sampling bottle and the sampling window, when the end of the fixed outer tube close to the sampling window is fixedly connected to the discharge pipe, the push-pull driver installed on the fixed outer tube can pull the sampling branch tube toward the discharge pipe through the power output end, and the sampling branch tube is arranged on the sampling inner tube, so that the sampling inner tube will slide synchronously in the fixed outer tube, thereby allowing the sampling window to extend into the discharge pipe during sampling and to retract into the fixed outer tube in time after sampling is completed.

[0029] 2) Compared to existing novel particle powder samplers, the telescopic powder sampling device of this embodiment promptly pushes the sample receiving window to retract within the fixed outer tube after sampling is completed, thereby preventing further obstruction of the powder in the discharge pipe after sampling is completed, ultimately enabling rapid discharge of the material from the discharge pipe. Furthermore, when the sample receiving window is retracted within the fixed outer tube, powder in the discharge pipe is prevented from continuing to enter the sampling inner tube, thereby reducing contamination of the next batch of powder by the previous batch, ultimately effectively improving powder detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a schematic structural diagram of a powder telescopic sampling device according to an embodiment of the present disclosure;

[0032] Figure 2 for Figure 1 The cross-sectional view of the powder telescopic sampling device shown is installed in the feeding pipe;

[0033] Figure 3 for Figure 2 The cross-sectional view of the inner sampling tube of the powder telescopic sampling device along A1-A2 is shown.

[0034] Figure numerals: 10, powder telescopic sampling device; 100, powder conveying paddle; 110, stirring and conveying spiral; 120, transmission shaft; 200, sampling bottle; 210, filter respirator; 300, telescopic powder collection kit; 310, sampling inner tube; 311, sampling end; 3110, sampling branch pipe; 312, sample receiving end; 3120, sample receiving window; 3121, rectangular opening; 3122, arc opening; 3130, guide rib; 3140, discharge port; 3141, supporting beam; 314a, supporting bearing ; 3142, connecting port; 320, fixed outer tube; 3210, radial slide; 330, push-pull drive; 400, rotation drive; 500, air sealing mechanism; 510, air storage cylinder; 5110, docking port; 5111, first sealed bearing; 5120, through-shaft opening; 5121, second sealed bearing; 520, outer bracket; 5210, connecting support plate; 5211, embedding interface; 5220, drive mounting plate; 5221, sleeve; 5230, connecting support rod; 20, discharge pipe. DETAILED DESCRIPTION

[0035] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0039] like Figure 1 and Figure 2 As shown, the present disclosure provides a powder telescopic sampling device 10 including a powder delivery paddle 100, a sampling bottle 200 and a telescopic powder collection kit 300; the powder delivery paddle 100 is used to deliver powder; the sampling bottle 200 is used to collect powder; the telescopic powder collection kit 300 includes a sampling inner tube 310, a fixed outer tube 320 and a push-pull driver 330, a sampling branch 3110 is provided at the bottom of the tube wall of the sampling end 311 of the sampling inner tube 310; the bottle mouth of the sampling bottle 200 is embedded in the sampling branch 3110 and is connected to the sampling inner tube 310; a sample receiving window 3120 is provided at the top of the tube wall of the sample receiving end 312 of the sampling inner tube 310; The powder paddle 100 is rotatably arranged in the sampling inner tube 310, and the two ends of the powder paddle 100 extend to the sample receiving window 3120 and the sampling branch pipe 3110 respectively; the fixed outer tube 320 is slidably sleeved outside the sampling inner tube 310, and is arranged between the sampling bottle 200 and the sample receiving window 3120; the end of the fixed outer tube 320 close to the sample receiving window 3120 is used to be fixedly connected to the discharge pipe 20; the push-pull driver 330 is installed on the fixed outer tube 320, and the power output end of the push-pull driver 330 is connected to the sampling branch pipe 3110, so as to push and pull the sample receiving window 3120 to extend into the discharge pipe 20 or retract to the fixed outer tube 320.

[0040] It can be understood that because the fixed outer tube 320 is slidably sleeved on the outside of the sampling inner tube 310 and is arranged between the sampling bottle 200 and the sampling window 3120, when one end of the fixed outer tube 320 close to the sampling window 3120 is fixedly connected to the discharge pipe 20, the push-pull driver 330 installed on the fixed outer tube 320 can pull the sampling branch tube 3110 to move toward the discharge pipe 20 through the power output end, and the sampling branch tube 3110 is arranged on the sampling inner tube 310, so that the sampling inner tube 310 will slide synchronously in the fixed outer tube 320, so that the sampling window 3120 can be extended into the discharge pipe 20 during sampling and can be retracted into the fixed outer tube 320 in time after the sampling is completed.

[0041] It can be understood that, compared to the novel particle powder samplers of the prior art, the telescopic powder sampling device 10 of this embodiment can promptly push the sample receiving window 3120 to retract within the fixed outer tube 320 after sampling is completed, thereby preventing further obstruction of the powder in the discharge pipe 20 after sampling is completed, ultimately enabling rapid discharge of the powder from the discharge pipe 20. Furthermore, when the sample receiving window 3120 is retracted within the fixed outer tube 320, it can also prevent the powder in the discharge pipe 20 from continuing to enter the sampling inner tube 310, thereby reducing contamination of the next batch of powder by the previous batch of powder, ultimately effectively improving the accuracy of powder detection.

[0042] Combine Figure 2 As shown, specifically, the first end of the sampling inner tube 310 is a sample receiving end 312, and the second end of the sampling inner tube 310 is a sampling end 311. It can be understood that by providing a sample receiving window 3120 at the top of the tube wall of the sample receiving end 312 of the sampling inner tube 310, when the sample receiving window 3120 extends into the discharge pipe 20, the powder in the discharge pipe 20 can be received by the sample receiving window 3120 and enter the sampling inner tube 310. Because a sampling branch tube 3110 is provided at the bottom of the tube wall of the sampling end 311 of the sampling inner tube 310, the powder transporting paddle 100 is rotatably arranged in the sampling inner tube 310, and the two ends of the powder transporting paddle 100 extend to the sample receiving window 3120 and the sampling branch tube 3110 respectively, so that the powder entering from the sample receiving window 3120 can be transferred to the sampling branch tube 3110 as the powder transporting paddle 100 rotates, and finally enters the sampling bottle 200 through the sampling branch tube 3110.

[0043] Combine Figure 3As shown, the inner wall of the fixed outer tube 320 is further provided with a plurality of radial grooves 3210, which are spaced apart around the outer wall of the sampling inner tube 310. The outer wall of the sampling inner tube 310 has guide ribs 3130 protruding into each radial groove 3210. It will be appreciated that because the outer wall of the sampling inner tube 310 has guide ribs 3130 protruding into each radial groove 3210, the guide ribs 3130 can slide along the radial grooves 3210. Furthermore, the radial grooves 3210 limit the guide ribs 3130, preventing the sampling inner tube 310 from rotating during sliding, thereby preventing the powder collected in the sampling inner tube 310 from tipping over.

[0044] Combine Figure 1 As shown, in one embodiment, the powder conveying paddle 100 includes a connected stirring and conveying spiral 110 and a transmission shaft 120. The stirring and conveying spiral 110 spirally extends along the axial direction of the transmission shaft 120. The leading end of the stirring and conveying spiral 110 extends to the sample receiving window 3120, and the distal end of the stirring and conveying spiral 110 extends to the sampling branch 3110. It can be understood that because the leading end of the stirring and conveying spiral 110 extends to the sample receiving window 3120 and the distal end of the stirring and conveying spiral 110 extends to the sampling branch 3110, the stirring and conveying spiral 110 can convey the powder quickly from the sample receiving window 3120 to the sampling branch 3110. Furthermore, the centrifugal force acting on the powder during conveyance by the stirring and conveying spiral 110 disperses the powder more widely. This dispersed powder can react evenly with the detection reagent during testing, effectively improving detection accuracy.

[0045] Combine Figure 2 As shown, specifically, a rotary driver 400 is fixedly mounted at the end of the sampling end 311 of the sampling inner tube 310, and the power output end of the rotary driver 400 is connected to the transmission shaft 120 of the powder conveying paddle 100. It can be understood that the rotary driver 400 can drive the transmission shaft 120 to rotate, thereby driving the powder conveying paddle 100 to rotate within the sampling inner tube 310, thereby achieving automatic sampling.

[0046] Combine Figure 2As shown, in one embodiment, an air sealing mechanism 500 is further provided between the end of the sampling end 311 of the sampling inner tube 310 and the rotation driver 400; the air sealing mechanism 500 includes an air storage cylinder 510 and an outer bracket 520, and the air storage cylinder 510 is arranged in the outer bracket 520; the end of the sampling end 311 of the sampling inner tube 310 is connected to the first end of the outer bracket 520, and the rotation driver 400 is fixedly arranged at the second end of the outer bracket 520; the transmission central shaft 120 sequentially passes through the first end of the outer bracket 520, the inner tube of the air storage cylinder 510 and the second end of the outer bracket 520, and is connected to the power output end of the rotation driver 400. It can be understood that by providing an air sealing mechanism 500 between the end of the sampling end 311 of the sampling inner tube 310 and the rotation driver 400, because the transmission shaft 120 is connected to the power output end of the rotation driver 400 through the first end of the outer bracket 520, the inner tube of the gas storage cylinder 510 and the second end of the outer bracket 520 in sequence, when the powder at the sampling end 311 of the sampling inner tube 310 moves along the transmission shaft 120 toward the rotation driver 400, the gas in the inner tube of the gas storage cylinder 510 can effectively hinder the movement speed of the powder, thereby reducing the wear caused by the powder entering the power output end of the rotation driver 400.

[0047] Combine Figure 1 and Figure 2As shown, further, the outer bracket 520 includes a connecting support plate 5210, a drive mounting plate 5220 and a plurality of connecting struts 5230; an embedding interface 5211 is provided on the connecting support plate 5210, and opposite ends of the inner cylinder wall of the gas storage cylinder 510 are respectively provided with a docking port 5110 and an axis port 5120, and the end of the sampling end 311 of the sampling inner tube 310 is provided with a communication port 3142, the docking port 5110 is embedded in a first side of the embedding interface 5211, and the communication port 3142 is embedded in a second side of the embedding interface 5211, and the docking port 5110 is docked and connected to the communication port 3142; a sleeve 5221 is provided on the drive mounting plate 5220, and the sleeve 5221 is sleeved on one end of the air cylinder 510 near the shaft opening 5120, and the rotation driver 400 is installed on the drive mounting plate 5220; a plurality of connecting struts 5230 are arranged around the air cylinder 510, and the two ends of each connecting strut 5230 are respectively connected to the connecting support plate 5210 and the drive mounting plate 5220; the transmission central shaft 120 is connected to the power output end of the rotation driver 400 through the connecting port 3142, the docking port 5110, the inner cylinder of the air cylinder 510 and the shaft opening 5120 in sequence. As can be understood, by embedding the docking port 5110 on the first side of the embedding interface 5211 of the connecting support plate 5210 and embedding the communication port 3142 on the second side of the embedding interface 5211 of the connecting support plate 5210, the docking port 5110 and the communication port 3142 can be tightly docked and connected through the embedding interface 5211. At the same time, by having the sleeve 5221 of the drive mounting plate 5220 sleeved onto the end of the gas cylinder 510 near the shaft opening 5120, and by connecting the connecting support plate 5210 and the drive mounting plate 5220 via multiple connecting struts 5230, the connecting support plate 5210 and the drive mounting plate 5220 form a more stable structure that is less likely to fall apart and has a longer service life. Since the multiple connecting struts 5230 are arranged around the gas cylinder 510, they can protect the gas cylinder 510 and stabilize its position.

[0048] In one embodiment, the transmission shaft 120 is rotatably connected to the docking port 5110 via a first sealed bearing 5111, and is rotatably connected to the shaft opening 5120 via a second sealed bearing 5121. The first sealed bearing 5111 is sealedly connected within the docking port 5110, and the second sealed bearing 5121 is sealedly connected within the shaft opening 5120, so that the inner cylinder of the air reservoir 510 forms a blocked air cavity. It can be understood that because the transmission shaft 120 is connected to the docking port 5110 of the air reservoir 510 via the first sealed bearing 5111 and to the shaft opening 5120 of the air reservoir 510 via the second sealed bearing 5121, the friction between the transmission shaft 120 and the docking port 5110 and the shaft opening 5120, respectively, can be effectively reduced, allowing the transmission shaft 120 to rotate more smoothly and smoothly within the inner cylinder of the air reservoir 510. At the same time, by sealingly connecting the first sealed bearing 5111 within the docking port 5110, the gap between the transmission shaft 120 and the shaft opening 5120 can be blocked by the first sealed bearing 5111, preventing powder from entering the inner cylinder of the gas reservoir 510 through the gap. Furthermore, by sealingly connecting the second sealed bearing 5121 within the shaft opening 5120, a relatively closed barrier air cavity is formed within the inner cylinder of the gas reservoir 510. As gas is continuously injected into the barrier air cavity, a high-pressure environment is formed within the barrier air cavity, further preventing powder from entering through the docking port 5110 or the shaft opening 5120, ultimately reducing the possibility of powder entering the rotary driver 400 through the barrier air cavity.

[0049] In one embodiment, a discharge port 3140 is provided at the end of the sample receiving end 312 of the sampling inner tube 310, and a supporting beam 3141 is fixed at the discharge port 3140. The supporting beam 3141 is rotatably connected to the transmission shaft 120 through a supporting bearing 314a, and the end of the head end of the stirring and conveying spiral blade 110 is close to the discharge port 3140. It can be understood that by providing a discharge port 3140 at the end of the sample receiving end 312 of the sampling inner tube 310, and because the head end of the stirring and conveying spiral 110 is close to the discharge port 3140, when the next sampling is performed, if there is excess powder remaining in the sampling inner tube 310, the excess powder may be mixed with the next batch of powder, affecting the accuracy of powder detection. Therefore, before the next sampling is performed, the stirring and conveying spiral 110 can be rotated in the opposite direction to transfer the excess powder so that the excess powder can be returned to the discharge pipe 20 through the discharge port 3140, thereby reducing the possibility of excess powder being mixed with the next batch of powder. At the same time, the transmission shaft 120 is fixed to the support beam 3141 via a support shaft, which allows the transmission shaft 120 to be suspended above the sampling end 311 of the powder collection sleeve, preventing the stirring and conveying spiral 110 from interfering with the tube wall of the powder collection sleeve as the transmission shaft 120 rotates. Among them, the supporting bearing 314a is fixedly arranged in the middle of the supporting beam 3141, and the inner hole of the supporting bearing 314a is sleeved on the end of the transmission shaft 120, so that the transmission shaft 120 can be rotatably connected to the supporting beam 3141 through the supporting bearing 314a, thereby improving the smoothness of the rotation of the transmission shaft 120 and helping to ensure that the powder telescopic sampling device 10 of this embodiment operates more stably.

[0050] In one embodiment, the sample receiving window 3120 includes a rectangular opening 3121 and an arc-shaped opening 3122 that are connected to each other; the rectangular opening 3121 is opened at the top of the tube wall of the sample receiving end 312 of the sampling inner tube 310 along the axial direction of the transmission center axis 120, and the arc-shaped opening 3122 is opened at the top of the tube wall of the sample receiving end 312 of the sampling inner tube 310 along the radial direction of the transmission center axis 120; the rectangular opening 3121 is connected to the discharge port 3140, and the arc-shaped opening 3122 is arranged at the end of the rectangular opening 3121 away from the discharge port 3140. It can be understood that since a rectangular opening 3121 is provided on the top of the tube wall of the sample receiving end 312 of the sampling inner tube 310 in a direction parallel to the transmission center axis 120, and an arc-shaped opening 3122 is provided in a radial direction perpendicular to the transmission center axis 120, the rectangular opening 3121 and the arc-shaped opening 3122 enable the sample receiving window 3120 to have a larger material receiving range in both the direction parallel to the transmission center axis 120 and the transmission center radial direction, thereby allowing more powder to enter the sampling inner tube 310 through the sample receiving window 3120 per unit time, thereby ultimately improving the sampling efficiency of the powder telescopic sampling device 10 of this embodiment. At the same time, if too much powder enters from the rectangular opening 3121 at one time, in order to avoid excessive accumulation of powder and hindering the rotation of the stirring and conveying spiral blade 110, the rectangular opening 3121 is connected to the discharge port 3140, so that the powder can be quickly returned to the discharge pipe 20 from the discharge port 3140 during the rotation of the stirring and conveying spiral blade 110, so that the stirring and conveying spiral blade 110 can maintain a normal rotation state.

[0051] In one embodiment, a filter respirator 210 is provided on the inner wall of the sampling bottle 200. It is understood that by providing the filter respirator 210 on the inner wall of the sampling bottle 200, the filter respirator 210 can filter the external air entering the sampling conduit, thereby preventing the external air from contaminating the powder. Specifically, the filter respirator 210 can be filled with an alkaline absorbent, a desiccant, etc. The alkaline absorbent can absorb carbon dioxide entering the sampling conduit, thereby preventing the powder from reacting with carbon dioxide and deteriorating. The desiccant can absorb water vapor entering the sampling conduit, thereby preventing the powder from absorbing water and deliquescing. The alkaline absorbent can be calcium hydroxide, alkali asbestos, etc., of course, this is not limited here, and those skilled in the art can also replace it as needed.

[0052] It should be noted that the powder may be ternary material powder, iron phosphate powder, graphite powder, lithium carbonate powder, lithium hydroxide powder, etc. Among them, ternary material powder, iron phosphate powder, graphite powder, and lithium carbonate powder are susceptible to moisture absorption, while alkaline powders such as lithium hydroxide powder are susceptible to carbon dioxide absorption and deterioration.

[0053] In one embodiment, for better understanding, the use process of the powder telescopic sampling device 10 of the above embodiment is described as follows:

[0054] During use, the end of the fixed outer tube 320 near the sample receiving window 3120 is first fixedly connected to the wall of the feed pipe 20. When sampling is required, the push-pull driver 330 pulls the sampling branch tube 3110 toward the feed pipe 20. The sampling branch tube 3110 simultaneously drives the sampling inner tube 310 to slide inside the fixed outer tube 320, so that the sample receiving window 3120 of the sampling inner tube 310 extends into the feed pipe 20 for sampling. When sampling is completed, the push-pull driver 330 pushes the sampling bottle 200 away from the feed pipe 20, so that the sample receiving window 3120 retracts into the fixed outer tube 320. At this time, the powder delivery paddle 100 rotates to quickly transport the powder from the sample receiving window 3120 to the sampling branch tube 3110, and finally the powder is stored in the sampling bottle 200.

[0055] Compared with the prior art, the present disclosure has at least the following advantages:

[0056] 1) Because the fixed outer tube 320 is slidably sleeved on the outside of the sampling inner tube 310 and is arranged between the sampling bottle 200 and the sampling window 3120, when one end of the fixed outer tube 320 close to the sampling window 3120 is fixedly connected to the discharge pipe 20, the push-pull driver 330 installed on the fixed outer tube 320 can pull the sampling branch tube 3110 to move toward the discharge pipe 20 through the power output end, and the sampling branch tube 3110 is arranged on the sampling inner tube 310, so that the sampling inner tube 310 will slide synchronously in the fixed outer tube 320, thereby allowing the sampling window 3120 to extend into the discharge pipe 20 during sampling and to retract into the fixed outer tube 320 in time after sampling is completed.

[0057] 2) Compared to the novel particle powder samplers of the prior art, the telescopic powder sampling device 10 of the present disclosure promptly retracts the sample receiving window 3120 within the fixed outer tube 320 after sampling is completed. This prevents further obstruction of the powder in the discharge pipe 20 after sampling is completed, ultimately enabling rapid discharge of the powder from the discharge pipe 20. Furthermore, when the sample receiving window 3120 is retracted within the fixed outer tube 320, it prevents powder in the discharge pipe 20 from continuing to enter the sampling inner tube 310, thereby reducing contamination of the next batch of powder by the previous batch, ultimately effectively improving powder detection accuracy.

[0058] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art could make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

1. A powder telescopic sampling device (10), comprising: A powder conveying paddle (100), wherein the powder conveying paddle (100) is used for conveying powder; a sampling bottle (200), the sampling bottle (200) being used to collect the powder; Characterized in that the powder telescopic sampling device (10) further comprises a telescopic powder sampling kit (300); The telescopic powder collection kit (300) comprises a sampling inner tube (310), a fixed outer tube (320) and a push-pull driver (330); a sampling branch tube (3110) is provided at the bottom of the tube wall of the sampling end (311) of the sampling inner tube (310); the bottle mouth of the sampling bottle (200) is embedded in the sampling branch tube (3110) and is connected to the sampling inner tube (310); a sample receiving window (3120) is provided at the top of the tube wall of the sample receiving end (312) of the sampling inner tube (310); the powder transporting paddle (100) is rotatably arranged in the sampling inner tube (310), and the two ends of the powder transporting paddle (100) extend to the sample receiving window (3120) and the sampling branch tube (3110) respectively; The fixed outer tube (320) is slidably sleeved on the outside of the sampling inner tube (310) and is arranged between the sampling bottle (200) and the sample receiving window (3120); the end of the fixed outer tube (320) close to the sample receiving window (3120) is used for fixed connection to the discharge pipe (20); the push-pull driver (330) is installed on the fixed outer tube (320), and the power output end of the push-pull driver (330) is connected to the sampling branch pipe (3110) to push and pull the sample receiving window (3120) to extend into the discharge pipe (20) or retract into the fixed outer tube (320).

2. The powder telescopic sampling device (10) according to claim 1, characterized in that: The inner wall of the fixed outer tube (320) is provided with a plurality of radial grooves (3210), and the plurality of radial grooves (3210) are arranged at intervals around the outer wall of the sampling inner tube (310), and the outer wall of the sampling inner tube (310) is provided with guide ribs (3130) protruding into each of the radial grooves (3210).

3. The powder telescopic sampling device (10) according to claim 1, characterized in that: A rotary driver (400) is fixedly provided at the end of the sampling end (311) of the sampling inner tube (310), and a power output end of the rotary driver (400) is connected to the transmission center shaft (120) of the powder conveying paddle (100).

4. The powder telescopic sampling device (10) according to claim 3, characterized in that: An air sealing mechanism (500) is further provided between the end of the sampling end (311) of the sampling inner tube (310) and the rotary driver (400); The air sealing mechanism (500) comprises an air storage cylinder (510) and an outer bracket (520), wherein the air storage cylinder (510) is arranged in the outer bracket (520); the end of the sampling end (311) of the sampling inner tube (310) is connected to the first end of the outer bracket (520), and the rotation driver (400) is fixedly arranged on the second end of the outer bracket (520); the transmission center shaft (120) sequentially passes through the first end of the outer bracket (520), the inner tube of the air storage cylinder (510) and the second end of the outer bracket (520), and is connected to the power output end of the rotation driver (400).

5. The powder telescopic sampling device (10) according to claim 4, characterized in that: The outer bracket (520) includes a connecting support plate (5210), a driving mounting plate (5220) and a plurality of connecting support rods (5230); The connecting support plate (5210) is provided with an embedding interface (5211), and the opposite ends of the inner cylinder wall of the gas storage cylinder (510) are respectively provided with a docking port (5110) and an axis port (5120), and the end of the sampling end (311) of the sampling inner tube (310) is provided with a communication port (3142), the docking port (5110) is embedded in the first side of the embedding interface (5211), and the communication port (3142) is embedded in the second side of the embedding interface (5211), and the docking port (5110) is docked and connected to the communication port (3142); the driving mounting plate (5220) is provided with a sleeve (5221), and the sleeve The port (5221) is sleeved on one end of the air cylinder (510) close to the through-shaft port (5120), and the rotation driver (400) is installed on the drive mounting plate (5220); a plurality of connecting struts (5230) are arranged around the air cylinder (510), and the two ends of each connecting strut (5230) are respectively connected to the connecting support plate (5210) and the drive mounting plate (5220); the transmission center shaft (120) is connected to the power output end of the rotation driver (400) through the communication port (3142), the docking port (5110), the inner cylinder of the air cylinder (510) and the through-shaft port (5120) in sequence.

6. The powder telescopic sampling device (10) according to claim 5, characterized in that: The transmission center shaft (120) is rotatably connected to the docking port (5110) via a first sealed bearing (5111), and the transmission center shaft (120) is rotatably connected to the shaft opening (5120) via a second sealed bearing (5121); the first sealed bearing (5111) is sealedly connected to the docking port (5110), and the second sealed bearing (5121) is sealedly connected to the shaft opening (5120), so that the inner cylinder of the air storage cylinder (510) forms a blocking air cavity.

7. The powder telescopic sampling device (10) according to claim 1, characterized in that: The powder conveying paddle (100) includes a stirring and conveying spiral blade (110) and a transmission shaft (120) connected to each other, wherein the stirring and conveying spiral blade (110) extends spirally along the axial direction of the transmission shaft (120), the head end of the stirring and conveying spiral blade (110) extends to the sample receiving window (3120), and the tail end of the stirring and conveying spiral blade (110) extends to the sampling branch pipe (3110).

8. The powder telescopic sampling device (10) according to claim 7, characterized in that: A discharge port (3140) is provided at the end of the sample receiving end (312) of the sampling inner tube (310), and a supporting crossbeam (3141) is fixedly provided at the discharge port (3140). The supporting crossbeam (3141) is rotatably connected to the transmission central shaft (120) via a supporting bearing (314a), and the end of the head end of the stirring and feeding spiral blade (110) is close to the discharge port (3140).

9. The powder telescopic sampling device (10) according to claim 8, characterized in that: The sample receiving window (3120) comprises a rectangular opening (3121) and an arc-shaped opening (3122) which are connected to each other; the rectangular opening (3121) is opened at the top of the tube wall of the sample receiving end (312) of the sampling inner tube (310) along the axial direction of the transmission center axis (120), and the arc-shaped opening (3122) is opened at the top of the tube wall of the sample receiving end (312) of the sampling inner tube (310) along the radial direction of the transmission center axis (120); the rectangular opening (3121) is connected to the discharge port (3140), and the arc-shaped opening (3122) is arranged at the end of the rectangular opening (3121) away from the discharge port (3140).

10. The powder telescopic sampling device (10) according to claim 1, characterized in that: A filter respirator (210) is provided on the inner wall of the sampling bottle (200).

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