Powder sampling device

Abstract

The utility model relates to a powder sampling device. The powder sampling device comprises a sampler, a flexible connector and a glove box, the middle part of the sampler is connected with the glove box through the flexible connector to form a system isolated from the outside; one end of the sampler extends into the glove box, a stock bin is arranged at the end, extending into the glove box, of the sampler, and the stock bin is used for containing powder; the glove box comprises an air inlet, an air outlet and a connecting part, the air inlet and the air outlet are used for introducing air for air replacement, and the connecting part is used for being connected with a powder storage device. The powder sampling device disclosed by the utility model has the advantage of being capable of quantitatively sampling from the powder storage device at a fixed point under the condition of isolating air.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder sampling technical field especially, is a kind of powder sampling device. BACKGROUND

[0002] In the field of metal powder, for the powder that certain production process needs to strictly control oxygen content, how to sample from the fixed point quantitative powder storage device while ensuring that powder is isolated from air is a technical problem. The existing sampling methods are roughly divided into three kinds: 1, install independent online sampler to powder production equipment, have the same atmosphere environment with powder production equipment, realize online sampling through automation control, can sample and detect the state of material in production process in real time, this sampling method has higher cost, and has certain requirement to user, is not suitable for sampling to certain fixed storage device;2, hoist powder storage device to specially-made feed port on the top of glove box, manually sample through glove box, this method needs to additionally configure glove box, sampling quantity is not easy to control and can only sample the bottom of storage tank;3, use liquid sampler to sample, can well isolate air, but liquid sampler is mainly aimed at liquid sampling, is not suitable for powder production sampling. SUMMARY

[0003] Therefore, the utility model discloses the purpose of providing a kind of powder sampling device.

[0004] A kind of powder sampling device, including sampler, soft connection and glove box;The middle part of the sampler is connected with the glove box by the soft connection, and a system isolated from the outside world is formed;The sampler is inserted into the glove box at one end, and the end of the sampler inserted into the glove box is provided with a bunker, and the bunker is used to accommodate powder;The glove box includes gas inlet, gas outlet and connecting portion, the gas inlet and the gas outlet are used to pass into gas for air replacement, and the connecting portion is used to be connected with powder storage device.

[0005] The powder sampling device, by glove box, sampler, soft connection is connected into an independent system isolated from outside air, the air in the device is replaced into use atmosphere by air replacement, then connect glove box and powder storage device, insert the sampler into powder, open the bunker and take out quantitative powder, the device has the same atmosphere with powder storage device, and can sample from the fixed point quantitative powder storage device under the premise of isolating air.

[0006] Further, the sampler comprises a sampler outer wall and a connecting rod arranged in the sampler outer wall, the hopper is arranged at the bottom of the connecting rod, and the hopper and the sidewall of the bottom of the sampler outer wall are respectively provided with an opening; a rotary limiting handle is arranged at the top of the connecting rod, the connecting rod is rotated by rotating the rotary limiting handle, and the openings of the hopper and the sampler outer wall can be coincided; a sealing seat is arranged on the connecting rod, a groove is arranged in the radial direction of the sealing seat, and a sealing ring is arranged in the groove; the sealing seat and the sealing ring abut against the sampler outer wall to form sufficient sealing.

[0007] Further, one end of the flexible connection is fixed at the position of the corresponding sealing seat of the sampler outer wall, and the other end is connected to the glove box; the part below the sealing seat of the sampler and the glove box form an independent system to realize the isolation of the hopper from the external air.

[0008] Further, the sampler comprises a sampler outer wall and a connecting rod arranged in the sampler outer wall, the hopper is arranged at the bottom of the connecting rod, and the hopper and the sidewall of the bottom of the sampler outer wall are respectively provided with an opening; a rotary limiting handle is arranged at the top of the connecting rod, the connecting rod is rotated by rotating the rotary limiting handle, and the openings of the hopper and the sampler outer wall can be coincided; a sealing seat is arranged on the connecting rod, a groove is arranged in the radial direction of the sealing seat, and a sealing ring is arranged in the groove; the sealing seat and the sealing ring abut against the sampler outer wall to form sufficient sealing.

[0009] Further, a depth size mark is arranged on the sampler outer wall. The insertion depth of the sampler can be conveniently confirmed.

[0010] Further, the connecting part of the glove box and the connecting section of the powder storage device are provided with an air inlet and an air outlet. The air in the connecting section is replaced by the target gas to realize the isolation of the external air.

[0011] Further, the connecting part of the glove box is a quick-mount chuck or a quick-mount butterfly valve, and the size is configured according to the port of the powder storage device. The quick-mount chuck or the quick-mount butterfly valve is quickly connected with the port of the powder storage device.

[0012] Further, the glove box further comprises a transition cabin, the transition cabin is provided with a cabin door connected with the outside and a cabin door in the glove box, and a pressure control system is arranged between the two cabin doors. The transition cabin is used to realize the transmission of articles when the glove box is isolated from the external air.

[0013] In order to better understand and implement, the utility model is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the powder sampling device of the utility model;

[0015] Figure 2 Structure diagram of the sampler of Example 1;

[0016] Figure 3 Structure diagram of the whole connecting rod of Example 1;

[0017] Figure 4 Structure diagram of the upper part of the sampler of Example 1;

[0018] Figure 5 Structure diagram of the lower part of the connecting rod of Example 1;

[0019] Figure 6 Structure diagram of the sampler of Example 2;

[0020] Figure 7 Structure diagram of the sampler of Example 2 when the hopper is opened. DETAILED DESCRIPTION

[0021] Example 1

[0022] The powder sampling device comprises a sampler 1, a flexible connection 2, and a glove box 3. The sampler 1 is inserted into the glove box 3 and extends into a powder storage device, the flexible connection 2 is sleeved on the outer side of the sampler 1, and one end of the flexible connection 2 is connected to the top end of the glove box 3, so as to seal the glove box 3.

[0023] Further, the sampler 1 comprises a sampler outer wall 11 and a connecting rod 12 arranged inside the sampler outer wall 11, and a hopper 14 is arranged at the bottom of the connecting rod 12. A hopper outlet is arranged on the side wall of the hopper 14, and an opening is arranged on the side wall of the bottom of the sampler outer wall 11. During use, the opening is aligned with the hopper outlet by rotating the connecting rod 12, so that the powder flows into or out of the hopper 14. After the powder is taken or placed, the connecting rod 12 is rotated to misalign the opening with the hopper outlet, so as to close the hopper 14.

[0024] Further, the sampler 1 further comprises a rotating limiting handle 13 fixedly arranged at the top of the connecting rod 12, which is used for rotating the connecting rod 12 and facilitating operation.

[0025] Preferably, the bottom of the hopper 14 forms an angle of 50-70° with the side wall, so that the powder in the hopper 14 can be quickly released in a vertical state. Two layers of sealing seats 15 are arranged on the connecting rod 12, the sealing seats 15 are arranged with grooves in the radial direction, O-shaped sealing rings 16 are arranged in the grooves, the O-shaped sealing rings 16 abut against the sampler outer wall 11, so as to seal the sampler outer wall 11, and the upper and lower parts of the sealing seats 15 become two relatively isolated parts.

[0026] Further, the outer wall 11 of the sampler is provided with a depth size mark, so that the insertion depth of the sampler 1 can be easily confirmed.

[0027] The top end of the flexible connection 2 is fixed to the position of the sealing seat 15 corresponding to the upper layer of the outer wall 11 of the sampler, and the bottom end is connected to the top end of the glove box 3, so that the part below the upper sealing seat 15 of the sampler 1 and the glove box 3 form an independent system, and the material bin 14 is isolated from the outside air.

[0028] The glove box 3 includes an air inlet, an air outlet, a connecting portion at the bottom, and a transition cabin. During use, the air in the glove box 3 and the sampler 1 is replaced by introducing the target gas into the air inlet of the glove box 3. After air replacement, the glove box 3 and the sampler 1 form an independent system that is isolated from the air.

[0029] Further, an oxygen content detector is connected to the air outlet of the glove box 3, which is used to test whether the internal air is sufficiently replaced. The connecting portion at the bottom of the glove box 3 is used to connect with the port of the powder storage device. Specifically, the connecting portion is a quick-mount chuck or a quick-mount butterfly valve, which is configured in size according to the port of the powder storage device and can be quickly connected with the port of the powder storage device. The transition cabin is provided with a cabin door connected with the outside and a cabin door inside the glove box 3. A pressure control system is arranged between the two cabin doors. When an article is put in, the cabin door connected with the outside is first opened, the article is put into the transition cabin, the cabin door connected with the outside is closed, the pressure is adjusted to the same as the internal pressure of the glove box 3 through the pressure control system, and then the cabin door inside the glove box 3 is opened, the article is transferred to the glove box 3, and after the operation is completed, the article can be removed from the glove box by reversing the operation. The powder taken out by the sampler 1 is quickly taken out through the transition cabin of the glove box 3. Sample bags or sample bottles can be arranged in the glove box 3, and the powder taken out by the sampler 1 is loaded into the sample bags or sample bottles and then taken out through the transition cabin.

[0030] The connecting section of the glove box 3 and the powder storage device is provided with an air inlet and an air outlet, and the air in the connecting section is replaced by introducing the target gas, so as to isolate the outside air.

[0031] In use, the sampler 1 and the glove box 3 are assembled into an independent system through the soft connection 2, then 99.999% argon gas is used to enter the gas inlet on the glove box 3, and air is discharged from the gas outlet of the glove box 3 to displace the air in the system, the gas outlet of the glove box 3 can be connected to an oxygen content detector to test whether the air in the device is sufficiently displaced; then, the quick-mount chuck or quick-mount butterfly valve at the bottom of the glove box 3 is connected to the port of the powder storage device, and the connecting section is also provided with a gas inlet and a gas outlet, and 99.999% argon gas is used to displace the residual air in the connecting section; the quick-mount chuck or quick-mount butterfly valve at the bottom of the glove box 3 and the port of the powder storage device are opened, the sampler 1 is inserted into the target depth of the powder through the depth size mark on the outer wall 11 of the sampler, the rotary limiting handle 13 is rotated to the open position of the hopper 14, and after waiting for 3-5s for the powder to enter the hopper 14, the rotary limiting handle 13 is rotated to the closed position of the hopper 14; the sampler 1 is pulled out of the powder storage device, the port of the powder storage device and the quick-mount chuck or quick-mount butterfly valve at the bottom of the glove box 3 are closed, the rotary limiting handle 13 is rotated to the open position of the hopper 14, and a certain amount of target powder is taken out and put into a sample bag or a sample bottle through the transition cabin of the glove box 3; after repeating the above steps several times to complete the sampling of the target powder, the quick-mount chuck or quick-mount butterfly valve at the bottom of the glove box 3 is disconnected from the port of the powder storage device, the port of the glove box 3 is reconnected to other powder storage devices, and the above steps are repeated to sample different powder storage devices.

[0032] Example 2

[0033] The embodiment is basically the same as embodiment 1, except that the sampler 1 is designed based on the working principle of a liquid sampler, specifically including a sampler outer wall 11 and a piston shaft 17 arranged in the sampler outer wall 11. A T-shaped or circular handle 18 is arranged at the top of the piston shaft 17, and the relative sliding of the piston shaft 17 and the sampler outer wall 11 can be realized by pushing and pulling the handle 18. A hopper 14 is arranged at the bottom of the piston shaft 17, and the hopper 14 is composed of two conical openings arranged opposite to each other. The volume of the hopper 14 can be customized as needed. The hopper 14 is extended out of the sampler outer wall 11 by sliding the piston shaft 17, so as to open the hopper 14. Specifically, the upper and lower limits of the movement of the piston shaft 17 are that the hopper 14 is completely pulled into or pushed out of the sampler outer wall 11 by the piston shaft 17. Two pistons 19 are arranged in the middle of the piston shaft 17, and the pistons 19 are in close contact with the sampler outer wall 11 to form a sufficient seal and effectively isolate the hopper 14 from the outside air. Depth size marks are arranged on the sampler outer wall 11 to facilitate confirmation of the insertion depth of the sampler 1.

[0034] The powder sampling device is connected into an independent system which is isolated from outside air through the glove box 3, the sampler 1 and the flexible connection 2, air in the device is replaced into use atmosphere through air replacement, the glove box 3 and the powder storage device are connected, the sampler 1 is inserted into the target depth by the depth size mark of the sampler outer wall 11, the quantitative powder is taken out to take the material by opening the bin 14, and the quantitative powder is taken out through the transition cabin of the glove box 3.The device has the same atmosphere with the powder storage device, and can take the sample from the powder storage device under the premise of isolating air.

[0035] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is relatively specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that, for ordinary skilled person in the art, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model also intends to include these changes and modifications.

Claims

1. A powder sampling device, characterized by: The sampler, the flexible connection and the glove box are connected to form a system isolated from the outside; one end of the sampler extends into the glove box, and a material bin is arranged at the end of the sampler extending into the glove box, and the material bin is used for accommodating powder; the glove box comprises an air inlet, an air outlet and a connecting portion, the air inlet and the air outlet are used for introducing gas for air replacement, and the connecting portion is used for connecting with a powder storage device.

2. The powder sampling device of claim 1, wherein: The sampler comprises a sampler outer wall and a connecting rod arranged in the sampler outer wall, the material bin is arranged at the bottom of the connecting rod, and the material bin and the side wall at the bottom of the sampler outer wall are respectively provided with an opening; a rotation limiting handle is arranged at the top of the connecting rod, the connecting rod is rotated by rotating the rotation limiting handle, and the openings of the material bin and the sampler outer wall can be coincided; a sealing seat is arranged on the connecting rod, the sealing seat is radially provided with a groove, a sealing ring is arranged in the groove, and the sealing seat and the sealing ring abut against the sampler outer wall to form sufficient sealing.

3. The powder sampling device of claim 2, wherein: One end of the flexible connection is fixed at the position of the corresponding sealing seat of the sampler outer wall, and the other end is connected with the glove box.

4. The powder sampling device of claim 1, wherein: The sampler comprises a sampler outer wall and a piston shaft arranged in the sampler outer wall; the material bin is arranged at the bottom of the piston shaft and comprises two open and opposite conical portions; a handle is arranged at the top of the piston shaft, and the piston shaft and the sampler outer wall can relatively slide by pushing and pulling the handle; a piston is arranged in the middle of the piston shaft, and the piston is closely attached to the sampler outer wall to form sufficient sealing.

5. A powder sampling device according to any one of claims 2 to 4, wherein: A depth size mark is arranged on the sampler outer wall.

6. The powder sampling device of claim 1, wherein: The connecting portion of the glove box and the connecting section of the powder storage device are provided with air inlets and air outlets.

7. The powder sampling device of claim 1, wherein: The connecting portion of the glove box is a quick-mount chuck or a quick-mount butterfly valve, and the size is configured according to the port of the powder storage device.

8. The powder sampling device of claim 1, wherein: The glove box further comprises a transition cabin, the transition cabin is provided with a cabin door connected with the outside and a cabin door in the glove box, and a pressure control system is arranged between the two cabin doors.

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