A powder sampling device and dedusting device

Abstract

The embodiment of the present application discloses a powder sampling device and a dust cleaning device, the powder sampling device comprises: a shell, a sampling core and a sampling motor, the sampling core is arranged in the shell and connected with the sampling motor; one end of the sampling core is a conical sampling end, a groove is arranged on the conical sampling end, one end of the shell is a conical shell end matched with the conical sampling end, and an opening matched with the groove is arranged on the conical shell end; and a controller can control the sampling motor to drive the sampling core to rotate. The dust cleaning device comprises: a base and an L-shaped dust cleaning piece, the L-shaped dust cleaning piece is fixed on the base; the L-shaped dust cleaning piece comprises an inlet pipe and an outlet pipe, the opening of the inlet pipe is matched with the conical shell end, the outlet pipe and the inlet pipe form an L-shaped channel inside, and the outlet pipe is connected with a negative pressure extraction equipment. Through the above scheme, the process of sampling the powder material and the process of automatically cleaning the dust of the powder sampling device can be automatically completed, manual participation is not needed, and the user can use conveniently.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical automation, in particular relates to a powder sampling device and ash cleaning device. BACKGROUND

[0002] In the process of studying the composition of some materials (for example, coal powder), it is necessary to accurately sample the materials, and then study the material samples.

[0003] The existing material sampling process is a manual sampling method. Due to the solid characteristics of the powder material, it is difficult to extract an accurate amount of powder material. In the past, when testing powder material, a small spoon was used to extract the material for sampling. This not only wastes time but also is not accurate enough. In addition, the powder material will be left on the sampling equipment, which needs to be cleaned manually, which brings a lot of inconvenience to the user. SUMMARY

[0004] In view of the above problems, the present application provides a powder sampling device and ash cleaning device to overcome the above problems or at least partially solve the above problems.

[0005] According to the first aspect of the embodiment of the present application, a powder sampling device is provided, comprising: a shell, a sampling core, and a sampling motor, the sampling core is arranged in the shell and connected with the sampling motor;

[0006] One end of the sampling core is a conical sampling end, a groove is arranged on the conical sampling end, one end of the shell is a conical shell end matched with the conical sampling end, and an opening matched with the groove is arranged on the conical shell end;

[0007] The sampling motor can drive the sampling core to rotate.

[0008] Further, the conical sampling end comprises an integrally formed conical part and a cylindrical part, and the groove is provided with a plurality of grooves extending from the tip of the conical part to the cylindrical part.

[0009] Further, a shaft sleeve is arranged on the cylindrical part, a key groove is arranged in the shaft sleeve, one end of a connecting rod is arranged in the key groove through a key, and the other end of the connecting rod is connected with the sampling motor.

[0010] Further, a plurality of openings are arranged on the shell corresponding to the groove of the cylindrical part, and the openings are arranged above the conical shell end.

[0011] Further, a sealing ring is arranged on the cylindrical part.

[0012] Further, a spring is sleeved on the sampling core, the spring is located above the conical sampling end, and a locking piece is arranged on the top of the shell to fix the spring.

[0013] According to a second aspect of the embodiment of the present application, a dust cleaning device is provided, comprising a base and an L-shaped dust cleaning piece fixed on the base.

[0014] The L-shaped dust cleaning piece comprises an inlet pipe and an outlet pipe, the opening of the inlet pipe is matched with the conical shell end of the powder sampling device in the first aspect, the outlet pipe forms an L-shaped channel with the inside of the inlet pipe, and the outlet pipe is connected with a negative pressure extraction device.

[0015] Further, a top pillar is arranged at the axis of the inside bottom of the inlet pipe, and the vertical distance between the top end of the top pillar and the opening of the inlet pipe is the same as the height of the conical shell end.

[0016] Further, a guide shaft is arranged on the base, a guide spring is sleeved on the guide shaft, and the guide shaft is connected with the outside bottom of the inlet pipe.

[0017] Further, a connecting flange is arranged on the outlet of the outlet pipe, the connecting flange is fixedly connected with a hose joint, and the hose joint is connected with the negative pressure extraction device through a hose.

[0018] The powder sampling device and the dust cleaning device provided by the embodiment of the present application have the following beneficial effects:

[0019] By the technical scheme of the present application, the powder sampling device is placed in the material, the material flows into the groove on the conical sampling end of the sampling core through the opening of the shell, the sampling motor is started to drive the sampling core to rotate, the other parts of the conical shell end of the shell block the groove to prevent the material from flowing out, and thus the sampling process is completed. The powder sampling device is moved to the corresponding material receiving position, the sampling motor is started to drive the sampling core to rotate to make the material in the groove flow out to the receiving position. After the powder sampling device completes the sampling task, the powder sampling device is moved above the inlet pipe of the dust cleaning device, the conical shell end of the powder sampling device is deeply inserted into the inlet pipe, the negative pressure extraction device is started to perform negative pressure extraction, and the powder on the powder sampling device is extracted through the L-shaped channel under the action of the negative pressure. In this way, the process of sampling the powder material and the process of automatically cleaning the powder sampling device can be automatically completed without manual participation, and the user can use it conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0021] The present application can be more clearly understood and appreciated from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 Structure diagram of powder sampling device of the embodiment of the present application;

[0023] Figure 2 Structure diagram of part of powder sampling device of the embodiment of the present application;

[0024] Figure 3 Structure diagram of sampling core of powder sampling device of the embodiment of the present application;

[0025] Figure 4 Structure diagram of shell of powder sampling device of the embodiment of the present application;

[0026] Figure 5 Structure diagram of ash cleaning device of the embodiment of the present application;

[0027] Figure 6 Structure diagram of part of powder sampling device of the embodiment of the present application in combination with ash cleaning device for ash cleaning.

[0028] Explanation of reference numerals: 1 powder sampling device, 11 shell, 111 tapered shell end, 1111 opening, 112 hole,

[0029] 12 sampling core, 121 tapered sampling end, 1211 groove, 1212 tapered part, 1213 cylindrical part, 1214 sealing ring, 122 shaft sleeve, 123 connecting rod, 124 spring, 125 locking piece;

[0030] 13 sampling motor;

[0031] 2 ash cleaning device, 21 base, 211 guide shaft, 212 guide spring, 22 L-shaped ash cleaning piece, 221 inlet pipe, 2211 top column, 222 outlet pipe, 2221 connecting flange, 2222 hose joint. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components set forth in these embodiments, numerical expressions, and numerical values are not intended to limit the scope of the present application unless otherwise specifically stated.

[0033] It should also be understood that the size of the various portions shown in the drawings is not intended to limit the scope of the present application.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the scope of the application or its application or uses.

[0035] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art(s) can not be discussed in detail herein, but should be considered within the scope of the present disclosure where appropriate.

[0036] It should be noted that like reference numerals and letters refer to like items throughout the several views, and each new view can not necessarily require further discussion of such items.

[0037] As shown in the drawings, Figures 1-4 A powder sampling device 1, comprising: a shell 11, a sampling core 12, a sampling motor 13, the sampling core 12 is arranged in the shell 11 and connected with the sampling motor 13; one end of the sampling core 12 is a tapered sampling end 121, a groove 1211 is arranged on the tapered sampling end 121, one end of the shell 11 is a tapered shell end 111 matched with the tapered sampling end 121, an opening 1111 matched with the groove 1211 is arranged on the tapered shell end 111; the sampling motor 13 can drive the sampling core 12 to rotate.

[0038] In the above scheme, the powder sampling device 1 is placed in the material, and the material flows into the groove 1211 on the tapered sampling end 121 of the sampling core 12 through the opening 1111 of the shell 11, so that the sampling motor 13 is started to drive the sampling core 12 to rotate, and the other parts of the tapered shell end 111 of the shell 11 block the groove 1211 to prevent the material from flowing out, so that the sampling process can be completed. Move the powder sampling device 1 to the corresponding material receiving place, start the sampling motor 13, drive the sampling core 12 to rotate to make the material in the groove 1211 flow out to the receiving place.

[0039] Among them, the sampling motor 13 is a servo motor that provides power for the rotation of the sampling core 12, the sampling core 12 is coaxially arranged with the shell 11, and the sampling core 12 and the shell 11 are tapered at one end corresponding to the material, so that the resistance when penetrating into the powder material is reduced, and then it is convenient and fast to enter the powder material.

[0040] In addition, before the sampling end (i.e., the installed tapered shell end 111 and tapered sampling end 121) of the powder sampling device 1 is deeply inserted into the material, if the groove 1211 of the tapered sampling end 121 corresponds to the opening 1111 of the tapered shell end 111, the sampling end is directly inserted into the material for sampling, if not, the sampling motor 13 is started to drive the sampling core 12 to rotate, and the groove 1211 is corresponded to the opening 1111, and then the sampling end is deeply inserted into the material for sampling.

[0041] The tip of the conical sampling end 121 is provided with a small cylindrical head, and a small hole corresponding to the cylindrical head is opened at the tip of the conical shell end 111. When the sampling core 12 is placed in the shell 11, the small cylindrical head enters the small hole, thereby fixing the position of the sampling core 12 and ensuring the stability of the sampling core 12.

[0042] By the above scheme, the powder sampling device 1 can automatically complete the sampling process, save manpower, facilitate use, and the sampling process can be more accurate and reduce errors.

[0043] In specific embodiments, the conical sampling end 121 includes an integrally formed conical portion 1212 and a cylindrical portion 1213, and the groove 1211 is provided with a plurality of grooves extending from the tip of the conical portion 1212 to the cylindrical portion 1213.

[0044] In the above scheme, the diameter of the bottom of the conical portion 1212 is equal to the diameter of the cylindrical portion 1213, which can ensure better connection. The depth and number of grooves 1211 corresponding to the groove 1211 can be set according to actual needs.

[0045] In addition, the height of the cylindrical portion 1213 and the height of the groove 1211 corresponding to the cylindrical portion 1213 can also be set according to actual needs.

[0046] The groove 1211 is preferably opened in a fan shape, and the width of the fan shape from the conical portion 1212 to the cylindrical portion 1213 is constant. In this way, the conical shell end 111 of the shell 11 corresponding to the conical portion 1212 is also provided with a fan-shaped opening 1111 that matches in size and shape, so that the powder can smoothly enter the groove 1211.

[0047] In specific embodiments, a shaft sleeve 122 is provided on the cylindrical portion 1213, a key groove is provided in the shaft sleeve 122, one end of a connecting rod 123 is provided in the key groove through a key, and the other end of the connecting rod 123 is connected to the sampling motor 13.

[0048] In the above scheme, the diameter of the shaft sleeve 122 is smaller than the diameter of the cylindrical portion 1213, which facilitates installation. Then the connecting rod 123 is connected to the sampling motor 13, so that the sampling motor 13 can drive the connecting rod 123 to rotate when it is started, and then drive the shaft sleeve 122 and the conical sampling end 121 to rotate through the key. In this way, the powder material can be automatically sampled according to the above-described scheme.

[0049] In specific embodiments, a plurality of openings 112 are provided in the groove 1211 of the cylindrical portion 1213 on the shell 11, and the openings 112 are arranged above the conical shell end 111.

[0050] In the above scheme, the purpose of providing multiple openings 112 on the outer casing 11 is to allow gas to enter and supplement the airflow when the sampling end of the powder sampling device 1 is placed in the dust removal device 2 for cleaning by means of negative pressure. The shape of the opening 112 can be set according to actual needs (e.g., circular, square, rectangular, or floral), and its size can match the groove 1211 of the corresponding cylindrical part 1213. No specific limitation is made here.

[0051] In a specific embodiment, a sealing ring 1214 is provided in the cylindrical portion 1213. The material of the sealing ring 1214 can be rubber, plastic, foam, etc. It is used to seal the gap between the outer shell 11 and the cylindrical portion 1213, preventing powder material from entering the upper part of the outer shell 11 and making it inconvenient to clean. At the same time, it prevents powder residue from being blown onto the upper part of the outer shell 11 when cleaning the material receiving end.

[0052] In a specific embodiment, a spring 124 is sleeved on the sampling core 12, the spring 124 is located above the conical sampling end 121, and a locking member 125 is provided on the top of the outer shell 11 to fix the spring 124.

[0053] In the above scheme, bearings are provided at both ends of the spring 124 to press and fix the sampling core 12 inside the outer shell 11, ensuring that the sampling core 12 will not wobble inside the outer shell 11, and making the conical sampling end 121 of the sampling core 12 fit more tightly with the conical outer shell end 111 of the outer shell 11. The locking member 125 is used to fix the spring 124. The locking member 125 can be a locking nut with corresponding threads on the inner side of the top of the outer shell 11, so that the locking nut can fix the spring 124 through the threaded connection. In this way, the locking nut will compress the spring 124, and the spring 124 will compress the sampling core 12 through its elastic force to ensure the stability of the sampling core 12.

[0054] According to another embodiment of this application, a dust removal device 2 is provided, such as... Figure 5 As shown, it includes: a base 21 and an L-shaped dust removal component 22, the L-shaped dust removal component 22 being fixed on the base 21; the L-shaped dust removal component 22 includes an inlet pipe 221 and an outlet pipe 222, the opening 1111 of the inlet pipe 221 matching the conical outer shell end 111 of the powder sampling device 1 in the above embodiment, the outlet pipe 222 forming an L-shaped channel with the inside of the inlet pipe 221, and the outlet pipe 222 being connected to a negative pressure device.

[0055] In the above scheme, after the powder sampling device 1 completes the sampling task, the powder sampling device 1 is moved above the inlet pipe 221 of the dust cleaning device 2, and the conical shell end 111 of the powder sampling device 1 is deeply inserted into the inlet pipe 221. The negative pressure extraction device can be a negative pressure fan, which is started to extract air from the dust cleaning device 2, so that the powder on the powder sampling device 1 is extracted through the L-shaped channel under the action of negative pressure.

[0056] Through the above scheme, the automatic dust cleaning process of the powder sampling device 1 is completed, without manual intervention, which is convenient for users to use.

[0057] In specific embodiments, a top column 2211 is arranged at the axis of the inside bottom of the inlet pipe 221, and the vertical distance between the top end of the top column 2211 and the opening 1111 of the inlet pipe 221 is the same as the height of the conical shell end 111.

[0058] In the above scheme, the inlet pipe 221 is cylindrical, and in order to limit the sampling end of the powder sampling device 1, a top column 2211 is arranged at the axis of the bottom of the inlet pipe 221. When the sampling end of the powder sampling device 1 is deeply inserted into the inlet pipe 221 for cleaning, the conical tip of the sampling end will be topped on the top column 2211. Thus, the top column 2211 provides a bearing force for the powder sampling device 1, so that the powder sampling device 1 can be stably placed in the dust cleaning device 2. In addition, the diameter of the top column 2211 is relatively small, so as to reduce the air flow resistance during negative pressure extraction for cleaning.

[0059] The sampling end of the powder sampling device 1 is pressed down to the dust cleaning device 2, so that the small cylindrical head of the conical sampling end 121 of the sampling core 12 is topped on the top column 2211. The sampling end of the powder sampling device 1 continues to press down to the dust cleaning device 2, and the top column 2211 tops the small cylindrical head back into the shell 11, so that the sampling core 12 is separated from the shell 11. The dust between the sampling core 12 and the shell 11 is extracted under the action of negative pressure.

[0060] In addition, the top column 2211 is fixed to the bottom of the inlet pipe 221 by screw connection.

[0061] In specific embodiments, a guide shaft 211 is arranged on the base 21, and a guide spring 212 is sleeved on the guide shaft 211, and the guide shaft 211 is connected to the outside bottom of the inlet pipe 221.

[0062] In the above scheme, the guide spring 212 is arranged on the guide shaft 211, so that when the powder sampling device 1 is placed on the dust cleaning device 2, a buffering effect can be achieved to reduce the impact of the powder sampling device 1 on the dust cleaning device 2.

[0063] In addition, the middle of the base 21 is provided with an inner hole, the guide shaft 211 is fixed in clearance fit with the inner hole of the base 21, and the spring 124 is pressed on the guide shaft 211 in cooperation with the bolt and the gasket.

[0064] In a specific embodiment, a connecting flange 2221 is arranged on the outlet of the outlet pipe 222, the connecting flange 2221 is fixedly connected with a hose joint 2222, and the hose joint 2222 is connected in communication with the negative pressure extraction equipment through a hose.

[0065] In the above scheme, the negative pressure extraction equipment extracts air, the powder in the powder sampling device 1 enters the hose joint 2222 through the L-shaped channel, and is discharged through the hose. Further, the purpose of cleaning the powder sampling device 1 is achieved.

[0066] Based on another embodiment of the present application, the powder sampling device 1 and the ash removal device 2 are combined, as shown in Figure 6 .

[0067] 1. The powder sampling device 1 comprises a sealing ring 1214, an outer shell 11, a spring 124, a shaft sleeve 122, a locking piece 125, a connecting rod 123 and a sampling core 12.

[0068] The ash removal device 2 comprises a base 21, a guide shaft 211, a guide spring 212, a top column 2211, an inlet pipe 221, an outlet pipe 222, a flange and a hose joint 2222.

[0069] 2. The structure of the sampling core 12 and the connecting rod 123:

[0070] (1) One end of the sampling core 12 is in the shape of a cone (i.e., a conical sampling end 121), and a small cylindrical head at the tip of the conical sampling end 121 cooperates with the opening 1111 at the tip of the conical outer shell 11 end of the outer shell 11 to guide.

[0071] (2) A plurality of grooves 1211 are uniformly distributed around the conical sampling end 121 of the sampling core 12, and the grooves 1211 extend from the tip of the conical part 1212 to the cylindrical part 1213.

[0072] (3) A sealing groove is formed in the cylindrical part 1213 of the sampling core 12, and the sealing ring 1214 is embedded therein.

[0073] (4) The other end of the sampling core 12 is a shaft sleeve 122, and the shaft sleeve 122 has a key groove, the outer diameter of the shaft sleeve 122 is smaller than the above-mentioned cylindrical part 1213, and the shaft of the connecting rod 123 is connected in clearance fit with the shaft sleeve 122 of the sampling core 12 through a key, that is, the sampling core 12 and the connecting rod 123 can only axially freely slide, and cannot move axially and radially.

[0074] 3. The structure of the shell 11:

[0075] (1) One end of the shell 11 is in the shape of a cone (i.e., the tapered shell end 111), and a plurality of fan-shaped openings (i.e., openings 1111) are evenly distributed around the tapered shell end 111. A small circular hole is at the tip of the tapered shell end 111 (which matches the small cylindrical head of the sampling core 12).

[0076] (2) The inside of the shell 11 is hollow, and a plurality of openings 112 are evenly distributed on the cylindrical body near the tapered shell end 111 (corresponding to the groove 1211 of the cylindrical part 1213), which serves to supplement the air volume by drawing negative pressure in the future.

[0077] (3) A flange is welded to the outer circle of the other end of the shell 11, and the inner hole of the shell 11 is threaded.

[0078] 4. Assembly relationship of the powder sampling device 1:

[0079] (1) The connecting rod 123 and the sampling core 12 are assembled into a whole and coaxially matched with the shell 11, with the sealing ring 1214 embedded therein. The small cylindrical head at the tip of the tapered sampling end 121 of the sampling core 12 is matched and installed with the small circular hole at the tip of the tapered shell end 111 of the shell 11.

[0080] (2) The two ends of the spring 124 are bearings, which are assembled with the spring 124 at the shaft sleeve 122 part of the sampling core 12. The locking piece 125 (preferably a locking nut) is connected with the inner thread of the shell 11 to press the spring 124 and the bearing tightly.

[0081] 5. Powder sampling principle

[0082] Insert the tapered sampling end 121 of the powder sampling device 1 into the powder material (such as fine sand), and rotate the sampling core 12. The powder material can enter the groove 1211 of the sampling core 12 through the openings 1111 of the tapered shell end 111 of the shell 11. By rotating the sampling core 12, the powder material can be stored in the cavity formed by the sampling core 12 and the shell 11.

[0083] 6. Assembly relationship of the dust cleaning device 2

[0084] (1) The entire inlet pipe 221 is in the shape of a cylinder, with a plurality of small holes evenly distributed around its upper end, and an outlet pipe 222 is welded to its side. The outlet pipe 222 is connected with a hose joint 2222 through a connecting flange 2221.

[0085] (2) A post 2211 is erected at the axial part below the inlet pipe 221, and the post 2211 is fixed immovably through threaded connection with the guide shaft 211.

[0086] (3) The guide shaft 211 is connected with the inlet pipe 221 through the sealing ring 1214 and screw connection; the guide shaft 211 is externally sleeved with the guide spring 212.

[0087] (4) The inner hole of the base 21 is clearance fitted with the guide shaft 211 (movable in the axial direction under external force).

[0088] (5) The base 21 and the guide spring 212 are pressed on the guide shaft 211 through bolts and gaskets.

[0089] 7. Dust cleaning principle

[0090] When the powder sampling device 1 needs to be cleaned, the dust cleaning device 2 can be used to complete the cleaning, and the steps are as follows:

[0091] (1) The hose joint 2222 is connected with the negative pressure port of the negative pressure equipment, and when the powder sampling device 1 is close to the inlet pipe 221 of the dust cleaning device 2, the guide spring 212 plays a buffering and compression sealing role on the powder sampling device 1. Because the inlet pipe 221 is under negative pressure, the airflow will be injected through the groove 1211 of the sampling core 12 and the small port around the inlet pipe 221, so as to clean the dust adhered to the powder sampling device 1;

[0092] (2) The powder sampling device 1 presses down the dust cleaning device 2, so that the small cylindrical head of the conical sampling end 121 of the sampling core 12 is on the top column 2211, and the powder sampling device 1 continues to press down the dust cleaning device 2, and the top column 2211 is pushed back into the shell 11, so that the sampling core 12 is separated from the shell 11. The dust retained between the sampling core 12 and the shell 11 is also sucked away under the action of negative pressure.

[0093] Through the description of the above embodiment, the powder sampling device is placed in the material, and the material flows into the groove of the conical sampling end of the sampling core through the opening of the shell. Then the sampling motor is started to drive the sampling core to rotate, and the other parts of the conical shell end of the shell block the groove to prevent the material from flowing out, so that the sampling process is completed. The powder sampling device is moved to the corresponding material receiving position, the sampling motor is started to drive the sampling core to rotate to make the material in the groove flow out to the receiving position. After the powder sampling device completes the sampling task, the powder sampling device is moved above the inlet pipe of the dust cleaning device, the conical shell end of the powder sampling device is deeply inserted into the inlet pipe, the negative pressure equipment is started to suck negative pressure, and the powder on the powder sampling device is sucked away through the L-shaped channel under the action of negative pressure. In this way, the powder material sampling process and the automatic dust cleaning process of the powder sampling device can be automatically completed without manual intervention, which is convenient for users to use.

[0094] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0095] The description of this invention is given for illustrative and descriptive purposes only and is not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A powder sampling device (1), characterized in that, include: The package includes a housing (11), a sampling core (12), and a sampling motor (13), wherein the sampling core (12) is disposed inside the housing (11) and connected to the sampling motor (13); One end of the sampling core (12) is a conical sampling end (121), and a groove (1211) is provided on the conical sampling end (121). One end of the outer shell (11) is a conical outer shell end (111) that matches the conical sampling end (121). An opening (1111) that matches the groove (1211) is opened on the conical outer shell end (111). A spring (124) is sleeved on the sampling core (12). The spring (124) is located above the conical sampling end (121). A locking member (125) is set on the top of the outer shell (11) to fix the spring (124). Bearings are provided at both ends of the spring (124) to press and fix the sampling core (12) inside the outer shell (11). The conical sampling end (121) includes an integrally formed conical part (1212) and a cylindrical part (1213), and the groove (1211) is provided in multiple ways, extending from the tip of the conical part (1212) to the cylindrical part (1213); The sampling motor (13) can drive the sampling core (12) to rotate; It also includes a dust removal device (2), which includes: a base (21) and an L-shaped dust removal component (22), wherein the L-shaped dust removal component (22) is fixed on the base (21); The L-shaped dust removal component (22) includes an inlet pipe (221) and an outlet pipe (222). The opening (1111) of the inlet pipe (221) matches the conical outer shell end (111) of the powder sampling device (1). The outlet pipe (222) forms an L-shaped channel with the interior of the inlet pipe (221). The outlet pipe (222) is connected to a negative pressure suction device.

2. The powder sampling device (1) according to claim 1, characterized in that, A bushing (122) is provided on the cylindrical part (1213), and a keyway is provided inside the bushing (122). One end of the connecting rod (123) is set in the keyway by a key, and the other end of the connecting rod (123) is connected to the sampling motor (13).

3. The powder sampling device (1) according to claim 1, characterized in that, The outer shell (11) has a plurality of openings (112) in the groove (1211) corresponding to the cylindrical part (1213), and the openings (112) are located above the conical outer shell end (111).

4. The powder sampling device (1) according to claim 1, characterized in that, A sealing ring (1214) is provided in the cylindrical part (1213).

5. The powder sampling device (1) according to claim 1, characterized in that, A top post (2211) is provided at the axial center of the bottom inner side of the inlet pipe (221). The vertical distance between the top of the top post (2211) and the opening (1111) of the inlet pipe (221) is the same as the height of the conical shell end (111).

6. The powder sampling device (1) according to claim 1, characterized in that, A guide shaft (211) is provided on the base (21), and a guide spring (212) is sleeved on the guide shaft (211). The guide shaft (211) is connected to the bottom outer side of the inlet pipe (221).

7. The powder sampling device (1) according to claim 1, characterized in that, A connecting flange (2221) is provided at the outlet of the outlet pipe (222). The connecting flange (2221) is fixedly connected to the hose connector (2222). The hose connector (2222) is connected to the vacuum pumping equipment through a hose.

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