Sampling device for barreled solid powder

Abstract

The utility model belongs to the field of sampling equipment, and provides a barreled solid powder sampling device, which comprises a fixed cylinder (1) and a sampling tube (2) which are sequentially sleeved from outside to inside, the fixed cylinder (1) comprises an outer cylinder (1-1) and a flange connecting surface (1-2), the bottom of the flange connecting surface (1-2) is provided with an outlet (1-3), and the inner wall of the outer cylinder (1-1) is provided with internal threads; the sampling tube (2) is of a hollow structure with the top open and the bottom closed, external threads matched with the internal threads of the outer cylinder (1-1) are arranged on the outer wall of a tube body, a sampling opening (2-2) is formed in the side wall of the tube body, a sample outlet (2-4) is formed in the top of the tube body, a sample plug (2-5) is arranged at the sample outlet (2-4), and a sample bin is formed between the sample plug (2-5) and the sampling tube (2). According to the technical scheme, the problems that time and labor are wasted, the safety is poor, the sample is easily affected with damp and decomposed due to exposure, and the sample is polluted when the barreled sensitive material is sampled are well solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the sampling equipment field, especially relates to a sampling device of barrel solid powder. BACKGROUND

[0002] There are a large number of environmentally sensitive materials in the field of lithium batteries, such as ethylene sulfate and other crystalline powders, which are easily decomposed when exposed to air, causing corrosion of surrounding objects or injury to personnel. The current sampling method for ethylene sulfate is as follows: multiple people lay down and invert the packaging barrel, open the barrel valve, and put the self-sealing bag on the sampling port to make a certain amount of powder sample flow into the self-sealing bag, thus completing the sampling. This sampling method is not only time-consuming and labor-intensive, but also has a high risk of causing product contamination.

[0003] The existing solid powder sampler is composed of two hollow pipes that cooperate with each other, and long circular holes are formed on the inner pipe and the outer pipe. After reaching the specified depth, the inner pipe is rotated to open the long circular hole, and the long circular hole is closed after sampling, and the sampler is extracted. For example, the powder sampler disclosed in Chinese patent CN207703534U includes an outer sampling pipe with one end closed and one end open, and an inner sampling pipe with one end closed and one end open. The inner sampling pipe is inserted into the outer sampling pipe, and a plurality of sampling grooves are formed on the outer wall surfaces of the outer sampling pipe and the inner sampling pipe. When the inner sampling pipe and the outer sampling pipe are relatively rotated, the sampling grooves can be opened or closed, but the joint between the inner and outer pipes is not sealed, and the rod body and the discharge port valve are also not sealed.

[0004] Therefore, it is of great practical significance to design a sampling device that is convenient to operate, does not expose the material, is pollution-free, safe and environmentally friendly, and has high efficiency for sampling of sensitive materials. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is that the existing technology is time-consuming and labor-intensive, has poor safety, and the sample is easily exposed during the sampling process, which leads to moisture decomposition and sample contamination. The sampling device for barrel solid powder has the advantages of simple operation, high efficiency, good safety, good sealing, no exposure of materials, and no pollution.

[0006] To solve the above technical problems, the application provides the following technical scheme: a sampling device for barrel-packed solid powder, comprising a fixed cylinder 1 and a sampling pipe 2 which are sequentially sleeved from outside to inside, wherein the fixed cylinder 1 comprises an outer cylinder 1-1 and a flange connecting surface 1-2, the bottom of the flange connecting surface 1-2 is provided with an outlet 1-3, and the inner wall of the outer cylinder 1-1 is provided with an internal thread; the sampling pipe 2 is provided with a hollow pipe body 2-1, the outer wall of the pipe body 2-1 is provided with an external thread which is matched with the internal thread of the outer cylinder 1-1, the side wall of the pipe body 2-1 is provided with a sampling port 2-2, the top of the pipe body 2-1 is provided with a sample outlet 2-4, and the sample outlet 2-4 is provided with a sample plug 2-5, and a sample bin is formed between the sample plug 2-5 and the sampling pipe 2.

[0007] Further, the internal thread is arranged on the lower section of the inner wall of the outer cylinder 1-1, and the upper section of the inner wall of the outer cylinder 1-1 is a smooth surface without thread.

[0008] Further, the top and bottom of the internal thread section are both provided with sealing rings.

[0009] Further, the outer cylinder 1-1 is provided with an air inlet, the air inlet is connected with an air inlet pipeline 1-5 and an air inlet valve, the sample plug 2-5 is provided with a gas displacement air inlet pipe 2-6 and a gas displacement exhaust pipe 2-7, and the gas displacement air inlet pipe 2-6 extends to the bottom of the pipe body 2-1.

[0010] Further, the sampling port 2-2 is a spiral opening, and the spiral opening scrapes the solid powder into the sample bin in the process of screwing the sampling pipe 2 from top to bottom.

[0011] Further, the sampling pipe 2 is of a structure with an open top and a closed bottom, and is composed of a hollow cylindrical pipe body and a conical bottom.

[0012] Further, the flange connecting surface 1-2 is detachably connected with the flange of the barrel-packed solid powder through fasteners 1-4.

[0013] Further, the top of the sampling pipe 2 is provided with a hand-held part 2-3.

[0014] The sampling device for barrel-packed solid powder provided by the application has the advantages that the fixed cylinder is located outside the packaging barrel, does not enter the inside of the packaging barrel in the sampling process, is connected with the sampling pipe through the lower thread, is screwed into the inside of the packaging barrel in a spiral manner, ensures the sealing property of the sampling process, does not expose the sample, avoids the problems of moisture and pollution of the material, only needs single-person operation for sampling, does not need to be inverted for the barrel body, greatly reduces the labor, and improves the safety of the sampling operation. BRIEF DESCRIPTION OF DRAWINGS

[0015] BRIEF DESCRIPTION OF DRAWINGS Figure 1 The overall structural diagram of the sampling device for the barrel-packed solid powder is provided.

[0016] BRIEF DESCRIPTION OF DRAWINGS Figure 1 In the sampling device for the barrel-packed solid powder, 1 is a fixed cylinder, 1-1 is an outer cylinder, 1-2 is a flange connecting surface, 1-3 is an outlet, 1-4 is a fastener, and 1-5 is an air inlet pipeline; 2 is a sampling tube, 2-1 is a tube body, 2-2 is a sampling port, 2-3 is a handheld part, 2-4 is a sample outlet, 2-5 is a sample plug, 2-6 is a gas replacement air inlet pipe, and 2-7 is a gas replacement air outlet pipe.

[0017] BRIEF DESCRIPTION OF DRAWINGS Figure 2 The structural diagram of the fixed cylinder 1 after the sampling device for the barrel-packed solid powder is exploded.

[0018] BRIEF DESCRIPTION OF DRAWINGS Figure 3 The structural diagram of the sampling tube 2 after the sampling device for the barrel-packed solid powder is exploded.

[0019] BRIEF DESCRIPTION OF DRAWINGS Figure 4 The structural diagram of the sampling port 2-2. DETAILED DESCRIPTION

[0020] The content of the present application will be described in detail below in combination with the drawings of the specification. The following examples are only preferred embodiments adopted for better illustrating the present application, but are not limited to the following examples. It should be pointed out that equivalent changes made according to the principles and characteristics of the present application are within the protection scope of the present application.

[0021]

EMBODIMENT

[0022] A sampling device for barrel-packed solid powder comprises a fixed cylinder 1 and a sampling tube 2 which are sequentially sleeved from outside to inside. The fixed cylinder 1 comprises an outer cylinder 1-1 and a flange connecting surface 1-2. The bottom of the flange connecting surface 1-2 is provided with an outlet 1-3. The inner wall of the outer cylinder 1-1 is designed in two sections. The upper section of the inner wall is a smooth surface without thread, and the lower section of the inner wall is provided with internal threads. The top and bottom of the internal thread section are both provided with sealing rings. The sampling tube 2 is a hollow structure with an open top and a closed bottom, which is composed of a cylindrical tube body 2-1 and a conical bottom. The outer wall of the tube body 2-1 is provided with external threads which are matched with the internal threads of the lower section of the outer cylinder 1-1. The side wall of the tube body 2-1 is provided with a sampling port 2-2. The top of the tube body 2-1 is provided with a handheld part 2-3 and a sample outlet 2-4. The sample outlet 2-4 is provided with a sample plug 2-5. The sample plug 2-5 and the sampling tube 2 form a sample chamber.

[0023] The upper section of the outer cylinder 1-1 is provided with an air inlet, and the air inlet is connected with an air inlet pipeline 1-5 and an air inlet valve; the sample plug 2-5 is provided with a gas replacement air inlet pipe 2-6 and a gas replacement exhaust pipe 2-7, and the gas replacement air inlet pipe 2-6 extends to the bottom of the pipe body 2-1; the flange connection surface 1-2 and the flange of the solid powder charging barrel are detachably connected through the fastener 1-4; the sampling port 2-2 is a spiral opening, and in the process of screwing the sampling pipe 2 from top to bottom, the spiral opening scrapes the solid powder into the sample bin.

[0024] The operation process of sampling the vinyl ethyl sulfate stainless steel packaging barrel by using the sampling device is as follows:

[0025] (1) open the air inlet valve at the air inlet pipeline 1-5, continuously replace nitrogen in the fixed cylinder 1, and place the fixed cylinder 1 on the flange surface of the packaging barrel, and insert the fastener 1-4 to fix it with the flange;

[0026] (2) put the sampling pipe 2 into the fixed cylinder 1, and continuously rotate to screw into the conical bottom of the sampling pipe 2 to the bottom surface of the outlet 1-3, open the valves of the gas replacement air inlet pipe 2-6 and the gas replacement exhaust pipe 2-7 on the sample plug 2-5, and replace nitrogen in the sampling pipe 2, after the nitrogen replacement is completed, close the gas valves of the gas replacement air inlet pipe 2-6 and the gas replacement exhaust pipe 2-7;

[0027] (3) open the ball valve of the packaging barrel, and screw the sampling pipe 2 clockwise, and in the process of downward rotation of the sampling pipe 2, the sampling port 2-2 scrapes the material, and the material enters the sample bin.

[0028] (4) after sampling is completed, rotate the sampling pipe 2 counterclockwise, and the sampling pipe 2 slowly leaves the inside of the packaging barrel, when the conical bottom of the sampling pipe 2 reaches the flange surface, the ball valve of the packaging barrel is closed, and the sampling device is removed.

[0029] (5) put the sampling device into a nitrogen protection glove box, pour out the sample from the sample outlet 2-4 at the top of the sampling pipe 2, complete sample transfer, and supply analysis and detection.

[0030] The sampling device for barrel-packed solid powder provided by the utility model has the advantages that the fixed cylinder is located outside the packaging barrel, the sampling pipe and the fixed cylinder are connected through threads, the sealing performance of the sampling process is good, the sample is not exposed, the problems of material damp and pollution are avoided, the operation is simple, the safety is high, and good technical effects are achieved.

Claims

1. A sampling device for barreled solid powder, comprising a fixed cylinder (1) and a sampling tube (2) which are sequentially sleeved from the outside to the inside, characterized in that: The fixed cylinder (1) comprises an outer cylinder (1-1) and a flange connection surface (1-2), the bottom of the flange connection surface (1-2) is provided with an outlet (1-3), and the inner wall of the outer cylinder (1-1) is provided with an internal thread; the sampling tube (2) is provided with a hollow tube body (2-1), the outer wall of the tube body (2-1) is provided with an external thread matching the internal thread of the outer cylinder (1-1), a sampling port (2-2) is provided on the side wall of the tube body (2-1), a sample outlet (2-4) is provided at the top of the tube body (2-1), a sample plug (2-5) is provided at the sample outlet (2-4), and a sample chamber is formed between the sample plug (2-5) and the sampling tube (2).

2. The sampling device for barreled solid powder according to claim 1, characterized in that: The internal thread is arranged on the lower section of the inner wall of the outer cylinder (1-1), and the upper section of the inner wall of the outer cylinder (1-1) is a smooth surface without any thread arrangement.

3. The sampling device for barreled solid powder according to claim 1, characterized in that: The top and bottom of the internal thread section are both provided with sealing rings.

4. The sampling device for barreled solid powder according to claim 1, characterized in that: The outer cylinder (1-1) is provided with an air inlet, which is connected to an air inlet pipeline (1-5) and an air inlet valve; the sample plug (2-5) is provided with a gas replacement air inlet pipe (2-6) and a gas replacement air exhaust pipe (2-7), and the gas replacement air inlet pipe (2-6) extends to the bottom of the tube body (2-1).

5. The sampling device for barreled solid powder according to claim 1, characterized in that: The sampling port (2-2) is a spiral opening. When the sampling tube (2) is screwed into the material barrel from top to bottom, the spiral opening scrapes the solid powder into the sample chamber.

6. The sampling device for barreled solid powder according to claim 1, characterized in that: The sampling tube (2) is a structure with an open top and a closed bottom, and is composed of a hollow cylindrical tube body and a conical bottom.

7. The sampling device for barreled solid powder according to claim 1, characterized in that: The flange connection surface (1-2) and the flange of the solid powder charging barrel are detachably connected via fasteners (1-4).

8. The sampling device for barreled solid powder according to claim 1, characterized in that: A handheld component (2-3) is provided on the top of the sampling tube (2).

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