Powder sampler

Abstract

The utility model relates to the technical field of sampling, and discloses a powder sampler which is characterized in that in a sampling state, a telescopic assembly enables a sampling pipe and a communicating pipe to be in a conducting state, and materials can flow through the communicating pipe from the sampling pipe and finally enter a collecting piece; in the cleaning state, the sampling pipe and the communicating pipe are blocked by the telescopic assembly, and the communicating pipe is purged through the blowing part, so that the material remaining in the communicating pipe can fall into the collecting part, the sampling error caused by the material remaining in the communicating pipe is avoided, and the material sampling accuracy is improved. The suction assembly is used for extracting gas in the gas chamber and the material chamber in a sampling state, so that the material can be finally sucked into the collecting piece from the sampling pipe and the communicating pipe. The suction assembly can blow the filtering assembly in the cleaning state, the materials hung on the wall of the filtering assembly are cleaned, and the accuracy of material sampling is further ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sampling technical field, and concretely relates to a powder sampler. BACKGROUND

[0002] When powder is processed, the material of each process section needs to be sampled and detected. The sampling on the production line usually adopts manual sampling, and the technical problem of low sampling accuracy often exists. INVENTION CONTENTS

[0003] The utility model aims at providing a powder sampler, and solves the technical problem of low sampling accuracy.

[0004] In order to realize the above-mentioned purpose, the utility model provides a powder sampler, and the powder sampler comprises:

[0005] A communication pipe;

[0006] A sampling mechanism, comprising a telescopic assembly, a blowing member and a sampling pipe in communication with the material falling tank, the telescopic assembly is inserted from the side away from the sampling end of the sampling pipe, the telescopic assembly can slide along the length direction of the sampling pipe to open or block the discharging end of the sampling pipe, and the blowing end of the blowing member is in communication with the sampling pipe;

[0007] A collecting mechanism, comprising a suction assembly, a collecting member and a filter assembly arranged in the collecting member, the collecting member forms a collecting cavity inside, the filter assembly divides the collecting cavity into a gas chamber and a material chamber, one end of the communication pipe is in communication with the sampling pipe, the other end of the communication pipe extends into the material chamber, the suction assembly is used for extracting the gas in the gas chamber and the material chamber in the sampling state, and the filter assembly can be swept in the cleaning state;

[0008] When in the sampling state, the telescopic assembly opens the sampling pipe and the communication pipe; when in the cleaning state, the telescopic assembly blocks the sampling pipe and the communication pipe and sweeps the communication pipe through the blowing member.

[0009] In the embodiment of the utility model, the suction assembly comprises a suction member and a suction pipeline, one end of the suction pipeline is connected with the suction member, and the other end of the suction pipeline extends into the gas chamber.

[0010] In the embodiment of the utility model, the filter assembly comprises a filter plate and a filter plate connector, the side, facing the suction pipeline, of the filter plate is arranged with the filter plate connector, the suction pipeline is connected with the filter plate connector, and a plurality of filter holes are formed in the filter plate.

[0011] In the embodiment of the utility model, the collecting member comprises a cover plate, a sampling member and a quick release connector arranged between the sampling member and the cover plate, the inner side wall of the quick release connector is formed with an annular clamping groove, the outer peripheral wall of the filter plate is limitingly clamped with the annular clamping groove, and the communication pipe penetrates through the filter plate and extends into the material chamber.

[0012] In the embodiment of the utility model, the outer periphery of the sampling member is in threaded rotary cooperation with the inner side wall of the quick-release connecting member.

[0013] In the embodiment of the utility model, the inner wall of the quick-release connecting member forms a limiting groove, the collecting member further comprises a sealing ring arranged in the limiting groove, the sampling member abuts against the sealing ring and is in sealing cooperation with the quick-release connecting member.

[0014] In the embodiment of the utility model, the powder sampler further comprises a blowing valve body, the blowing valve body is communicated with the blowing member, and the suction member and the blowing valve body are integrally installed.

[0015] In the embodiment of the utility model, the sampling pipe has a feeding channel and a buffer channel communicated in sequence, the buffer channel is communicated with the communicating pipe, the blowing member is arranged at the top wall end of the buffer channel and is communicated with the buffer channel, in the cleaning state, the feeding channel and the buffer channel are blocked, the buffer channel is communicated with the communicating pipe and blows air into the buffer channel through the blowing member.

[0016] In the embodiment of the utility model, the telescopic assembly comprises a body part and a protruding part, the body part is in sealing cooperation with the inner peripheral wall of the buffer channel, the protruding part is arranged on the side of the body part facing the feeding channel, in the cleaning state, the protruding part extends into the feeding channel and leaves a blowing gap between the sampling pipe.

[0017] In the embodiment of the utility model, the inner wall of the buffer channel forms a limiting protrusion, and the body part is used for limiting clamping with the limiting protrusion in the cleaning state.

[0018] Through the above technical scheme, the powder sampler provided by the embodiment of the utility model has the following beneficial effects:

[0019] The powder sampler in the embodiment comprises a communication pipe, a sampling mechanism and a collecting mechanism. The sampling mechanism comprises a telescopic assembly, a blowing member and a sampling pipe in communication with the drop tank, the telescopic assembly is inserted from one side away from the sampling end of the sampling pipe, the telescopic assembly can slide along the length direction of the sampling pipe to open or block the discharge end of the sampling pipe, the blowing end of the blowing member is in communication with the sampling pipe, in the sampling state, the telescopic assembly makes the sampling pipe and the communication pipe in the open state, the material can flow from the sampling pipe to the collecting mechanism through the communication pipe; in the cleaning state, the telescopic assembly blocks the sampling pipe and the communication pipe, and blows the communication pipe through the blowing member, so that the material remaining in the communication pipe can fall into the collecting mechanism, avoiding the sampling error caused by the material remaining in the communication pipe, and improving the precision of material sampling. The collecting mechanism comprises a suction assembly, a collecting member and a filter assembly arranged in the collecting member, the collecting member forms a collecting cavity inside, the filter assembly separates the collecting cavity into a gas chamber and a material chamber, one end of the communication pipe is in communication with the sampling pipe, and the other end extends into the material chamber, the suction assembly is used to suck the gas in the gas chamber and the material chamber in the sampling state, so that the material can be finally sucked into the collecting member from the sampling pipe and the communication pipe. The suction assembly can blow and clean the material hanging on the filter assembly in the cleaning state, further ensuring the precision of material sampling.

[0020] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application, but are not intended to limit the present application. For those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor. In the drawings:

[0022] Figure 1 is a structural schematic view of the powder sampler according to the present application;

[0023] Figure 2 is a structural schematic view of the collecting mechanism according to the present application from one perspective;

[0024] Figure 3 is a structural schematic view of the collecting mechanism according to the present application from another perspective;

[0025] Figure 4 is a structural schematic view of the sampling mechanism according to the present application from one perspective;

[0026] Figure 5 is a structural schematic view of the sampling mechanism according to the present application from another perspective.

[0027] Reference Signs List

[0028] 1 connecting pipe 3111 vacuum generator

[0029] 2 sampling mechanism 3112 vacuum electromagnetic valve

[0030] 21 telescopic assembly 312 suction duct

[0031] 211 body part 32 collecting member

[0032] 212 protruding part 321 cover plate

[0033] 213 limiting part 322 sampling member

[0034] 22 blowing member 323 quick-release connecting member

[0035] 23 sampling pipe 324 sealing ring

[0036] 231 feeding channel 325 gas chamber

[0037] 232 buffer channel 326 material chamber

[0038] 233 limiting protrusion 33 filtering assembly

[0039] 24 air cylinder 331 filter plate

[0040] 25 first quick-release joint 332 filter plate joint

[0041] 26 second quick-release joint 4 blowing valve body

[0042] 27 speed-adjusting throttle valve 5 blowing pipe

[0043] 28 fixed quick-release flange 6 electromagnetic valve shield

[0044] 3 collecting mechanism 100 material falling tank

[0045] 311 suction member DETAILED DESCRIPTION

[0046] The specific embodiments described hereinbelow are intended to be illustrative only and are not intended to limit the scope of the present application. It should be understood that various modifications can be made to the procedures and assemblies described hereinbelow without departing from the spirit of the present application.

[0047] A powder sampler according to the present application is described below with reference to the accompanying drawings.

[0048] As Figure 1As shown, in the present embodiment, a powder sampler is provided, which comprises a communication pipe 1, a sampling mechanism 2 and a collecting mechanism 3. The sampling mechanism 2 comprises a telescopic assembly 21, a blowing member 22 and a sampling pipe 23 in communication with the drop tank 100, the telescopic assembly 21 is inserted from the side of the sampling end away from the sampling pipe 23, the telescopic assembly 21 can slide along the length direction of the sampling pipe 23 to open or block the discharge end of the sampling pipe 23, and the blowing end of the blowing member 22 is in communication with the sampling pipe 23. The collecting mechanism 3 comprises a suction assembly, a collecting member 32 and a filter assembly 33 arranged in the collecting member 32, the inside of the collecting member 32 is formed with a collecting cavity, the filter assembly 33 divides the collecting cavity into a gas chamber 325 and a material chamber 326, one end of the communication pipe 1 is in communication with the sampling pipe 23, and the other end extends into the material chamber 326, the suction assembly is used to suck the gas in the gas chamber 325 and the material chamber 326 in the sampling state, and to blow the filter assembly 33 in the cleaning state. In the sampling state, the telescopic assembly 21 opens the sampling pipe 23 and the communication pipe 1 to material. In the cleaning state, the telescopic assembly 21 blocks the sampling pipe 23 and the communication pipe 1 and blows the communication pipe 1 through the blowing member 22. In the present embodiment, the communication pipe 1 is made of POM (Polyoxymethylene), that is, a transparent material pipe made of polyoxymethylene, which can directly observe the flow state of the material and whether there is residual material, and is convenient for the staff to observe the powder sampling condition. Of course, the communication pipe 1 can also be made of other materials, which can be set according to actual needs.

[0049] The sampling mechanism 2 comprises a telescopic assembly 21, a blowing member 22, and a sampling pipe 23 in communication with the material falling tank 100, the telescopic assembly 21 is inserted from the side of the sampling end away from the sampling pipe 23, the telescopic assembly 21 can slide along the length direction of the sampling pipe 23 to open or block the communication between the sampling pipe 23 and the communication pipe 1, the blowing end of the blowing member 22 is in communication with the sampling pipe 23, in the sampling state, the telescopic assembly 21 makes the sampling pipe 23 and the communication pipe 1 in the open state, the material can flow from the sampling pipe 23 through the communication pipe 1 and finally into the collecting member 32; in the cleaning state, the telescopic assembly 21 blocks the sampling pipe 23 and the communication pipe 1, and blows the communication pipe 1 through the blowing member 22, so that the material remaining in the communication pipe 1 can fall into the collecting member 32, avoiding the error of material sampling caused by the remaining material in the communication pipe 1, and improving the accuracy of material sampling. The collecting mechanism 3 comprises a suction assembly, a collecting member 32, and a filter assembly 33 arranged in the collecting member 32, the collecting member 32 forms a collecting cavity inside, the filter assembly 33 divides the collecting cavity into a gas chamber 325 and a material chamber 326, one end of the communication pipe 1 is in communication with the sampling pipe 23, and the other end extends into the material chamber 326, the suction assembly is used to extract the gas in the gas chamber 325 and the material chamber 326 in the sampling state, so that the material can be finally sucked into the collecting member 32 from the sampling pipe 23 and the communication pipe 1. The suction assembly can blow the material hanging on the side of the filter assembly 33 facing the material chamber 326 to the bottom of the collecting member 32 in the cleaning state, further improving the accuracy of material sampling. It should be noted that the sampling end of the sampling pipe 23 is the end for receiving the falling material in the material falling tank 100, and the discharge end of the sampling pipe 23 is the end in communication with the communication pipe 1.

[0050] In the embodiment, the suction assembly comprises a suction member 311 and a suction pipe 312, one end of the suction pipe 312 is connected with the suction member 311, and the other end extends into the gas chamber 325. It should be noted that the suction member 311 in the embodiment is composed of a vacuum generator 3111 and a vacuum electromagnetic valve 3112, the vacuum electromagnetic valve 3112 is used to drive the vacuum generator 3111 and control the opening and closing of the suction pipe 312 connected with the suction member 311, and the suction member 311 has two working states, namely the sampling state and the cleaning state.

[0051] In the sampling state, the vacuum electromagnetic valve 3112 and the vacuum generator 3111 are opened, and the suction operation is performed through the suction pipe 312. The suction time can be set to 1 minute, and the suction time can be adjusted according to actual needs. The air in the collection part 32 is discharged to the outside environment through the suction pipe 312 under the suction of the suction part 311, so that the gas chamber 325 and the material chamber 326 in the collection part 32 will have a strong negative pressure. At this time, since the sampling pipe 23, the communication pipe 1, and the collection cavity are sequentially communicated, the external powder will be sucked into the sampling pipe 23 when falling to the sampling end of the sampling pipe 23, gradually flow along the communication pipe 1, and finally enter the collection part 32. When the suction time is cut off, the vacuum electromagnetic valve 3112 is closed and the suction part 311 is driven to stop suction. Since the collection part 32 often encounters the problem of powder wall hanging during powder collection, the filter assembly 33 used to separate the collection cavity is also easy to hang dust, and if the dust on the filter assembly 33 is not swept, it will also affect the sampling accuracy of the collection part 32. Therefore, in the cleaning state, the vacuum electromagnetic valve 3112 and the vacuum generator 3111 perform negative pressure back suction on the filter plate 331 through the suction pipe 312. Specifically, the vacuum electromagnetic valve 3112 and the vacuum generator 3111 can be started for 2 seconds and then closed, and the vacuum electromagnetic valve 3112 and the suction part 311 are closed after being repeatedly cycled for 3 times. This can effectively remove the dust on the side of the filter plate 331 facing the gas chamber 325, and also blow the wall-hanging material on the side of the filter plate 331 facing the material chamber 326 into the sampling part 322, thereby ensuring the sampling accuracy of the material.

[0052] In the present embodiment, the vacuum electromagnetic valve 3112 can be started every two seconds to drive the suction part 311 to perform the blowing operation, and the vacuum electromagnetic valve 3112 is closed after being repeatedly cycled for 3 times. The intermittent blowing operation has good dust removal effect. It should be noted that the step of opening the vacuum electromagnetic valve 3112 and the suction part 311 to perform the blowing operation is usually set after the blowing of the blowing part 22 is completed. If the blowing is performed before the blowing of the blowing part 22, the wall-hanging powder in the communication pipe 1 will not fall into the bottom of the collection part 32 but will be hung on the filter assembly 33, which will cause the problem of wall-hanging powder on the filter assembly 33 after the blowing operation of the vacuum electromagnetic valve 3112 and the suction part 311 for multiple times, thereby causing the vacuum electromagnetic valve 3112 and the suction part 311 to still be unable to effectively clean the filter assembly 33.

[0053] In some embodiments, the vacuum generator 3111 is a jet type vacuum generator.

[0054] In the embodiment, the filter assembly 33 comprises a filter plate 331 and a filter plate 331 connector, the filter plate 331 is arranged with the filter plate 331 connector on the side facing the suction pipe 312, the suction pipe 312 is connected with the filter plate 331 connector, a plurality of filter holes are opened on the filter plate 331, which can effectively block the external dust on one side of the gas chamber 325, and avoid the external dust entering the material chamber 326.

[0055] In some embodiments, the pore size of the filter hole is smaller than the particle size of the powder, so that the powder entering the material chamber 326 is lost from the filter plate 331, ensuring the sampling accuracy of the material and reducing the influence of the powder entering the external environment.

[0056] In some embodiments, the filter plate 331 is made of stainless steel, such as 316L type stainless steel, and the filtering accuracy of the filter plate 331 needs to reach 0.1 um level. Under this filtering structure, 99.8% of the dust in the gas can be effectively filtered, avoiding the escape of the gas from the material chamber 326, affecting the sampling accuracy of the powder sampler, and polluting the external environment such as the production workshop.

[0057] As shown in Figure 2 and Figure 3 In the embodiment, the collecting piece 32 comprises a cover plate 321, a sampling piece 322, and a quick-release connector 323 arranged between the sampling piece 322 and the cover plate 321, the inner side wall of the quick-release connector 323 is formed with an annular clamping groove, and the outer peripheral wall of the filter plate 331 is limited and clamped with the annular clamping groove. The filter plate 331 is limited by the annular clamping groove to avoid gaps between the filter plate 331 and the quick-release connector 323, which causes the material in the material chamber 326 to be sucked into the external space by the vacuum electromagnetic valve 3112 and the suction piece 311. The communication pipe 1 penetrates the filter plate 331 and extends into the material chamber 326, and a sealing ring is arranged between the communication pipe 1 and the filter plate 331, which can prevent external dust from falling into the material chamber 326 through the gap between the communication pipe 1 and the filter plate 331 to pollute the material, and ensure the sampling accuracy of the powder sampler.

[0058] It can be understood that one end of the communication pipe 1 is communicated with the sampling pipe 23, and the other end extends into the material chamber 326, so that the material passes through the filter assembly 33 along the communication pipe 1 and enters the material chamber 326, which is beneficial to reduce the additional opening of the material chamber 326, reduce the opening number requirement of the material chamber 326, and make more component structures available as the material chamber 326 of the embodiment, increase the applicability of the sampler of the embodiment. And the design that the communication pipe 1 penetrates the filter assembly 33 and enters the material chamber 326 can also reduce the disassembly or connection operation of the sampling piece 322 and other components in the process of multiple continuous sampling, which is beneficial to simplify the sampling operation and improve the sampling efficiency.

[0059] In some embodiments, the sampling member 322 is made of polyethylene and can withstand a negative pressure of -90 kPa.

[0060] As shown in the drawings, Figure 3 In the present embodiment, the top end of the sampling member 322 is externally threaded and can be screwed into the inner wall of the quick-release connector 323. In actual use, the sampling member 322 can be conveniently removed by manually screwing it, and can be replaced with a sampling member 322 of a different powder capacity according to actual needs.

[0061] In the present embodiment, the inner wall of the quick-release connector 323 forms a limiting groove, and the collecting member 32 further comprises a sealing ring 324 arranged in the limiting groove. The sampling member 322 abuts against the sealing ring 324 and is in sealing cooperation with the quick-release connector 323, which ensures that the sampling member 322 can abut against the sealing ring 324 when it is screwed in place, so that the sampling member 322 and the quick-release connector 323 are fully sealed, avoiding a decrease in the sampling accuracy of the powder sampler caused by powder overflow.

[0062] As shown in the drawings, Figure 2 The powder sampler further comprises a gas blowing valve body 4, which is in communication with the gas blowing member 22 and has a gas blowing pipe 5 arranged therebetween. In the present embodiment, the gas blowing pipe 5 can also be a transparent pipe. The suction member 311 and the gas blowing valve body 4 are integrated and installed as a whole, which can effectively reduce the occupied space.

[0063] In some embodiments, the suction member 311 and the gas blowing valve body 4 are further covered with a solenoid valve cover 6, which can protect the suction member 311 and the gas blowing valve body 4.

[0064] As shown in the drawings, Figure 4 and Figure 5 In the present embodiment, the telescopic assembly 21 comprises a body portion 211 and a protruding portion 212. The body portion 211 is externally sleeved with a sealing member, so that the body portion 211 can be in sealing cooperation with the inner circumferential wall of the buffer channel 232. There is no gap between the body portion 211 and the buffer channel 232, and there is no accumulation area, which can effectively prevent dust from entering between the body portion 211 and the buffer channel 232.

[0065] In some embodiments, the sealing member is a Y-shaped sealing member, which has a longer service life and better pressure resistance than conventional O-shaped sealing members.

[0066] It should be noted that the protruding portion 212 is arranged on the side of the body portion 211 facing the feeding channel 231, and the side of the protruding portion 212 away from the body portion 211 is planar. In the cleaning state, the protruding portion 212 extends into the feeding channel 231 and leaves a blowing gap between the sampling pipe 23, so as to blow the powder in the feeding channel 231 back to the powder tank 100 from the blowing gap.

[0067] In some embodiments, the telescopic assembly 21 is a piston rod driven by a cylinder 24 in the prior art.

[0068] In some embodiments, the piston rod is made of PEEK (Polyetheretherketone), which has good cooperation with the feed channel 231.

[0069] In addition, the sampling tube 23 is also provided with a first quick release joint 25, a second quick release joint 26, and a fixed quick flange 28. The fixed quick flange 28 is arranged between the cylinder 24 and the sampling tube 23, and the detachable connection between the cylinder 24 and the sampling tube 23 is realized through the second quick release joint 26. In addition, the quick chuck is arranged on the descending tank 100, and the sampling tube 23 can be locked on the quick chuck through the first quick release joint 25, so as to realize the detachable connection between the sampling tube 23 and the descending tank 100. The cylinder 24 is also provided with a speed regulating throttle valve 27, which can control the air inlet flow of the cylinder 24, so as to drive the telescopic assembly 21 to move left and right.

[0070] As shown in Figure 5 In this embodiment, the sampling tube 23 has a feed channel 231 and a buffer channel 232 which are sequentially communicated, the buffer channel 232 is communicated with the communicating pipe 1, and the blowing member 22 is arranged at the top wall end of the buffer channel 232 and communicated with the buffer channel 232. In the cleaning state, the telescopic assembly 21 moves left and extends into the feed channel 231, the buffer channel 232 is communicated with the communicating pipe 1 and blows air into the buffer channel 232 through the blowing member 22.

[0071] Further, a switch valve is arranged at the connection between the buffer channel 232 and the communicating pipe 1, which is also driven by the cylinder 24. In the cleaning state, the telescopic assembly 21 moves left and extends into the feed channel 231, so that the telescopic assembly 21 and the feed channel 231 only have a sweeping gap, at this time the switch valve is in the closed state and blocks the buffer channel 232 and the communicating pipe 1, the blowing member 22 sweeps the feed channel 231, and the residual powder in the feed channel 231 will be swept into the descending tank 100. Then the switch valve is driven by the cylinder 24 and is in the open state, so that the buffer channel 232 is communicated with the communicating pipe 1, at this time the communicating pipe 1 can be swept, so that the powder in the buffer channel 232 and hanging on the communicating pipe 1 falls into the sampling member 322 below.

[0072] In this embodiment, the inner wall of the buffer channel 232 forms a limiting protrusion 233, and the body part 211 is used for limiting and clamping with the limiting protrusion 233 in the cleaning state. Figure 5As shown, a limiting space is formed inside the cylinder 24, the telescopic assembly 21 penetrates the cylinder 24 and a limiting portion 213 is formed at the corresponding limiting space, the limiting portion 213 is matched with the size of the limiting space, and can effectively play a limiting role in the process that the cylinder 24 drives the telescopic assembly 21 to move left and right. If the existing limiting space reserved in the cylinder 24 is not enough to effectively limit the telescopic assembly 21, for example, the telescopic assembly 21 moves too much to the left, at this time, the limiting protrusion 233 on the buffer channel 232 is needed to limit the body portion 211, so as to avoid the hard collision between the telescopic assembly 21 and the sampling pipe 23, and further ensure the good cooperation effect between the telescopic assembly 21 and the sampling pipe 23.

[0073] In the powder sampler in the embodiment, places that can contact the powder, such as the sampling pipe 23, the communication pipe 1 and the collecting piece 32, can be provided with a non-metal material, so as to ensure that metal foreign matters cannot enter the collecting piece 32 during the sampling of the powder. The modification of the non-metal material can meet the sampling requirements of special materials such as ternary precursor powder, and is generally used in working conditions with strict control requirements for copper, zinc and tin foreign matters.

[0074] In addition, in the case of multiple sampling points for high-altitude operation, in order to facilitate the staff to sample at the fixed point, the collecting mechanism can be fixed first, the communication pipe 1 is extended and the sampling mechanism is moved to match the multiple sampling points at the high altitude, so as to enhance the sampling flexibility of the powder sampler. However, in order to ensure the good discharging effect of the communication pipe 1, the length of the communication pipe 1 is generally set to be not more than ten meters.

[0075] In the description of the utility model, it is to be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0076] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0077] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0078] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A powder sampler characterized by, The powder sampler comprises: a communication pipe (1); a sampling mechanism (2) comprising a telescopic assembly (21), a blowing member (22), and a sampling pipe (23) in communication with a powder tank (100), the telescopic assembly (21) being inserted from one side away from a sampling end of the sampling pipe (23), the telescopic assembly (21) being capable of sliding along a length direction of the sampling pipe (23) to open or block a discharging end of the sampling pipe (23), a blowing end of the blowing member (22) being in communication with the sampling pipe (23); a collecting mechanism (3) comprising a suction assembly, a collecting member (32), and a filter assembly (33) arranged in the collecting member (32), an inside of the collecting member (32) being formed with a collecting cavity, the filter assembly (33) separating the collecting cavity into a gas chamber (325) and a material chamber (326), one end of the communication pipe (1) being in communication with the sampling pipe (23), and the other end extending into the material chamber (326), the suction assembly being used to extract gas in the gas chamber (325) and the material chamber (326) in a sampling state, and capable of purging the filter assembly (33) in a cleaning state. In the sampling state, the telescopic assembly (21) opens the sampling pipe (23) and the communication pipe (1); in the cleaning state, the telescopic assembly (21) blocks the sampling pipe (23) and the communication pipe (1) and purges the communication pipe (1) through the blowing member (22).

2. The powder sampler of claim 1, wherein, The suction assembly comprises a suction member (311) and a suction pipeline (312), one end of the suction pipeline (312) being connected with the suction member (311), and the other end extending into the gas chamber (325).

3. The powder sampler of claim 2, wherein, The filter assembly (33) comprises a filter plate (331) and a filter plate (331) connector, the filter plate (331) being arranged with the filter plate (331) connector on one side facing the suction pipeline (312), the suction pipeline (312) being connected with the filter plate (331) connector, and a plurality of filter holes being formed on the filter plate (331).

4. The powder sampler of claim 3, wherein, The collecting member (32) comprises a cover plate (321), a sampling member (322), and a quick-release connector (323) arranged between the sampling member (322) and the cover plate (321), an inner side wall of the quick-release connector (323) being formed with an annular clamping groove, an outer peripheral wall of the filter plate (331) being limitingly clamped with the annular clamping groove, and the communication pipe (1) penetrating through the filter plate (331) and extending into the material chamber (326).

5. The powder sampler of claim 4, wherein, An outer periphery of the sampling member (322) is threadedly and rotationally matched with an inner side wall of the quick-release connector (323).

6. The powder sampler of claim 5, wherein, An inner wall of the quick-release connector (323) is formed with a limiting groove, and the collecting member (32) further comprises a sealing ring (324) arranged in the limiting groove, the sampling member (322) abutting against the sealing ring (324) and being sealingly matched with the quick-release connector (323).

7. The powder sampler of claim 2, wherein, The powder sampler further comprises a blowing valve body (4) in communication with the blowing member (22), and the suction member (311) and the blowing valve body (4) are integrally installed.

8. The powder sampler of any one of claims 1 to 7, wherein, The sampling tube (23) has a feeding channel (231) and a buffer channel (232) in sequence communication, the buffer channel (232) is in communication with the communication tube (1), the blowing member (22) is arranged at the top wall end of the buffer channel (232) and in communication with the buffer channel (232), in the cleaning state, the feeding channel (231) and the buffer channel (232) are blocked, the buffer channel (232) is in communication with the communication tube (1) and blows air into the buffer channel (232) through the blowing member (22).

9. The powder sampler of claim 8, wherein, The telescopic assembly (21) comprises a body part (211) and a protruding part (212), the body part (211) is in sealing cooperation with the inner circumferential wall of the buffer channel (232), the protruding part (212) is arranged at the side of the body part (211) facing the feeding channel (231), in the cleaning state, the protruding part (212) extends into the feeding channel (231) and leaves a blowing gap between the sampling tube (23).

10. The powder sampler of claim 9, wherein, The inner wall of the buffer channel (232) forms a limiting protrusion (233), and the body part (211) is used for limiting and clamping with the limiting protrusion (233) in the cleaning state.

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