Powder and particle sampling equipment

Abstract

According to the technical scheme, the powder and particle sampling equipment is characterized by comprising a surge bin; powder can pass through the surge bin and can be temporarily stored in the surge bin; the material receiving device is used for storing the sampled powder; the material suction device is used for conveying the powder passing through the surge bin into the material receiving device; one end of the material suction device is connected with the surge bin, and the other end of the material suction device is connected with the material receiving device; the vacuum generation device can form vacuum negative pressure suction force for the material suction device; the vacuum generation device is connected with the material suction device; the quantitative sampling device has the advantage that powder can be quantitatively sampled in a vacuum negative pressure suction mode.

Description

Technical Field

[0001] The present application relates to the technical field of powder processing equipment, and in particular to a powder and particle sampling device. Background Art

[0002] In powder processing technology, it is often necessary to inspect the quality of products, so it is necessary to regularly sample the powder to detect whether the products are qualified. Currently, the commonly used powder sampling methods include manual sampling or mechanical sampling equipment. Manual sampling is labor-intensive and has the risk of dust pollution. Mechanical sampling equipment generally uses cylinder-type reciprocating sampling, which has a high failure rate. For materials with high cleanliness requirements, there is still a residue phenomenon, and there is a risk of contaminating different batches of products. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present application provides a powder and granular material sampling device to solve the problems of the related technology. The technical solution is as follows:

[0004] An embodiment of the present application provides a powder and particle sampling device, including: a buffer bin; the buffer bin allows powder to pass through and temporarily store powder; a material receiving device, used to store the sampled powder; a material suction device, used to transfer the powder passing through the buffer bin to the material receiving device; one end of the material suction device is connected to the buffer bin, and the other end of the material suction device is connected to the material receiving device; a vacuum generating device, which can form a vacuum negative pressure suction force on the material suction device; the vacuum generating device is connected to the material suction device.

[0005] In one embodiment, the suction device includes: a sampling pipe and a suction pipe; the suction pipe is connected to the material receiving device; one end of the sampling pipe is connected to the suction pipe, and the other end of the sampling pipe is connected to the buffer bin; the vacuum generating device is connected to the suction pipe.

[0006] In one embodiment, the material suction pipe includes: a vertical portion and an inclined portion; the vertical portion is arranged at the upper end of the material receiving device; one end of the inclined portion is connected to the vertical portion, and the other end of the inclined portion is connected to the sampling pipe; the vacuum generating device is connected to the inclined portion.

[0007] In one embodiment, the inclination angle of the inclined portion is greater than the repose angle of the powder.

[0008] In one embodiment, the vacuum generating device comprises: a compressed air pipeline and a regulating valve; the compressed air pipeline is connected to the suction pipeline; and the regulating valve is arranged at the input end of the compressed air pipeline.

[0009] In one embodiment, a vacuum sampler is provided at the connection between the compressed air pipeline and the suction pipeline.

[0010] In one embodiment, the material receiving device includes: a dust collector and an automatic discharge valve; the suction pipe is connected to the dust collector; and the automatic discharge valve is arranged at the bottom of the dust collector.

[0011] In one embodiment, a first exhaust port is provided at the upper end of the dust collector.

[0012] In one embodiment, the dust collector is also provided with a back-blowing air pipeline, a filter element and a level switch capable of detecting the powder sampling amount.

[0013] In one embodiment, the buffer bin is a funnel-shaped buffer bin; a second exhaust port is also provided at the upper end of the buffer bin.

[0014] The advantages or beneficial effects of the above technical solution include at least:

[0015] The two ends of the suction device of the present application are respectively connected to the buffer bin and the material receiving device, and a vacuum generating device is provided on the suction device. When the vacuum generating device is working, the suction device can generate vacuum negative pressure suction, so as to absorb the powder passing through the buffer bin into the material receiving device, thereby replacing manual sampling or mechanical sampling with suction sampling, which not only saves labor costs but also avoids the occurrence of material residue.

[0016] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present application will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present application and should not be regarded as limiting the scope of the present application.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of the suction pipe in the utility model.

[0020] In the figure: 1. Buffer bin; 2. Material receiving device; 21. Dust collector; 22. Automatic discharge valve; 23. First exhaust port; 24. Back-blowing air pipeline; 25. Material level switch; 3. Suction device; 31. Sampling pipeline; 32. Suction pipeline; 4. Vacuum generating device; 41. Compressed air pipeline; 42. Regulating valve; 43. Vacuum sampler; 51. Vertical part; 52. Inclined part; 6. Second exhaust port. DETAILED DESCRIPTION

[0021] In the following, only some exemplary embodiments are briefly described to make the purpose, features and advantages of the utility model more obvious and understandable. As those skilled in the art will appreciate, the described embodiments can be modified in various ways without departing from the spirit or scope of the present application. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0022] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1 and Figure 2 As shown, the utility model provides a powder and particle sampling device, including: a buffer bin 1; the buffer bin 1 can allow powder to pass through and temporarily store powder; a material receiving device 2, used to store the sampled powder; a suction device 3, used to transfer the powder passing through the buffer bin 1 to the material receiving device 2; one end of the suction device 3 is connected to the buffer bin 1, and the other end of the suction device 3 is connected to the material receiving device 2; a vacuum generating device 4, which can form a vacuum negative pressure suction force on the suction device 3; the vacuum generating device 4 is connected to the suction device 3.

[0024] In this embodiment, the upper and lower ends of the buffer bin 1 are respectively connected to the upstream process and the downstream process of powder conveying. When the powder of the upstream process falls to the downstream process under the action of gravity, it passes through the buffer bin 1. The buffer bin 1 can slow down the falling speed of the powder and temporarily store the powder, which is convenient for sampling.

[0025] The two ends of the suction device 3 are respectively connected to the material receiving device 2 and the buffer bin 1, and the vacuum generating device 4 is connected to the suction device 4. When sampling is required, the vacuum generating device 4 starts to work to generate vacuum negative pressure suction in the suction device 3. The negative pressure suction can suck out the powder passing through the buffer bin 1 and transport it to the material receiving device 2, thereby replacing manual sampling or mechanical sampling with suction sampling, which not only saves labor costs but also avoids the occurrence of material residue.

[0026] Furthermore, the suction device 3 includes: a sampling pipe 31 and a suction pipe 32; the suction pipe 32 is connected to the material receiving device 2; one end of the sampling pipe 31 is connected to the suction pipe 32, and the other end of the sampling pipe 31 is connected to the buffer bin 1; the vacuum generating device 4 is connected to the suction pipe 32.

[0027] In this embodiment, the sampling pipe 31 and the suction pipe 32 are an integrally formed structure that are interconnected. The suction pipe 32 is arranged at the upper end of the material receiving device 2 and is connected to the vacuum generating device 4. The two sides of the sampling pipe 31 are respectively connected to the suction pipe 32 and the buffer bin 1. When the vacuum generating device 4 is working, a vacuum negative pressure suction force can be generated in the sampling pipe 31. The suction pipe 32 samples the temporarily stored powder from the buffer bin 1 through the sampling pipe 31, thereby achieving a sampling effect.

[0028] Furthermore, the suction pipe 32 includes: a vertical portion 51 and an inclined portion 52; the vertical portion 51 is arranged at the upper end of the material receiving device 2; one end of the inclined portion 52 is connected to the vertical portion 51, and the other end of the inclined portion 52 is connected to the sampling pipe 31; the vacuum generating device 4 is connected to the inclined portion 52.

[0029] In this embodiment, the suction pipe 32 is divided into two sides, one side is a vertical portion 51 (vertical pipe), and the other side is an inclined portion 52 (inclined pipe). The vertical portion 51 is arranged at the upper end of the material receiving device 2, and the two sides of the inclined portion 52 are respectively connected to the vertical portion 51 and the sampling pipe 31, and the vacuum generating device 4 is connected to the inclined portion 52. When the vacuum generating device 4 is working, a vacuum negative pressure can be generated in the suction device 3, so that the sampling pipe 31 has a vacuum suction force and absorbs the powder temporarily stored in the buffer bin 1. The powder falls into the material receiving device 2 after passing through the vertical portion 51, so as to achieve the sampling effect; after the vacuum generating device 4 stops working, there is no suction force in the suction device 3, and the remaining powder in the inclined portion automatically falls back into the buffer bin 1 under the action of the inclination angle and gravity to prevent material residue.

[0030] Furthermore, the inclination angle of the inclined portion 52 is greater than the repose angle of the powder.

[0031] In this embodiment, the angle of repose, also known as the angle of repose, is the minimum angle between the inclined surface and the horizontal surface when the inclined surface causes an object placed thereon to be in a critical state of sliding down the inclined surface (that is, as the inclination angle increases, the object on the inclined surface will slide more easily, and when the object reaches a state where it begins to slide down, the angle of the critical state is called the angle of repose); the inclination angle of the inclined portion 52 is greater than the angle of repose of the sampled powder, thereby ensuring that no powder material will remain inside the suction pipe 32.

[0032] Furthermore, the vacuum generating device 4 comprises: a compressed air pipeline 41 and a regulating valve 42 ; the compressed air pipeline 41 is connected to the suction pipeline 32 ; and the regulating valve 42 is arranged at the input end of the compressed air pipeline 41 .

[0033] In this embodiment, the compressed air pipeline 41 is connected to the suction pipeline 32, and the regulating valve 42 is arranged on the input end of the compressed air pipeline 41. The regulating valve 42 can control the gas volume of the compressed gas, thereby indirectly adjusting the sampling speed; when powder sampling is required, the regulating valve 42 is opened, and the compressed air enters the suction pipeline 32 through the compressed air pipeline 41 and the vacuum sampler 43 and generates a vacuum negative pressure, so that the suction device 3 can absorb the powder in the buffer bin 1 and transport the powder to the receiving device 2; when the equipment completes the powder sampling, the regulating valve 42 is closed. At this time, compressed air is no longer passed into the compressed air pipeline 41, the suction device 3 has no suction and no longer absorbs the powder in the buffer bin 1, and the powder in the buffer bin 1 falls freely.

[0034] Furthermore, a vacuum sampler 43 is provided at the connection between the compressed air pipeline 41 and the suction pipeline 32 .

[0035] In this embodiment, the vacuum sampler 43 is arranged at the connection between the compressed air pipe 41 and the material suction pipe 32. When compressed air is introduced into the compressed air pipe 41, the vacuum sampler 43 starts to work and can generate a negative pressure vacuum in the sampling pipe 31, so that the sampling pipe 31 can absorb the powder passing through the buffer bin 1 through the negative pressure attraction force, and the above powder is transported to the material receiving device 2, so as to achieve the powder sampling effect.

[0036] Furthermore, the material receiving device 2 comprises: a dust collector 21 and an automatic discharge valve 22 ; the material suction pipe 32 is connected to the dust collector 21 ; and the automatic discharge valve 22 is arranged at the bottom of the dust collector 21 .

[0037] In this embodiment, the discharge end of the suction pipe 32 is connected to the dust collector 21, and the automatic discharge valve 22 is arranged at the bottom of the dust collector 21. The dust collector 21 can filter the dust in the gas; after the powder is sucked into the dust collector 21, it can fall freely to the bottom of the dust collector 21; after the sampling is completed and the regulating valve 42 is closed, the automatic discharge valve 22 can be opened to put the sampled powder collected by the dust collector 21 into the external sampling container for sampling and detection.

[0038] Furthermore, a first exhaust port 23 is provided at the upper end of the dust collector 21 .

[0039] In this embodiment, a first exhaust port 23 is provided at the upper end of the dust collector 21. When the gas passes through the dust collector 21, it can be discharged from the first exhaust port 23 to prevent the internal pressure of the dust collector 21 from being too high.

[0040] Furthermore, the dust collector 21 is also provided with a back-blowing air pipeline 24, a filter element and a material level switch 25 capable of detecting the powder sampling amount.

[0041] In this embodiment, the back-blowing air pipe 24 and the filter element are arranged in the dust collector 21. The filter element can filter the dust. The back-blowing air pipe 24 can blow away the dust covering the filter element in the dust collector 21 to ensure that the filter element will not be blocked, thereby avoiding the blockage of the dust collector 21 and causing the internal pressure to increase; the material level switch 25 is arranged at the lower end of the dust collector 21. When the sampling volume in the dust collector 21 reaches a certain amount, the material level switch 25 detects it and alarms and feedbacks, so that the automatic discharge valve 22 opens and closes the regulating valve 42, thereby completing the automatic quantitative sampling of the dust collector 21.

[0042] Furthermore, the buffer bin 1 is a funnel-shaped buffer bin; a second exhaust port 6 is also provided at the upper end of the buffer bin 1 .

[0043] In this embodiment, the buffer bin 1 adopts a funnel-shaped buffer bin, which has a large opening at the upper end and a small opening at the lower end, so that the speed of the powder passing through the buffer bin 1 is slowed down, making it convenient for the sampling pipe 31 to sample the powder material falling through; a second exhaust port 6 is provided at the upper end of the buffer bin 1, and a filter screen is also provided in the end outlet of the second exhaust port 6, which can filter dust.

[0044] The utility model provides a powder and granular material sampling device. The functions of the modules in the various devices in the embodiments can refer to the corresponding descriptions in the above method. The device has the advantage of being able to quantitatively sample powders by vacuum negative pressure suction.

[0045] In the description of this specification, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0046] In the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Moreover, the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. The terms "vertical", "horizontal", "left", "right", "above", "below" and similar expressions are for illustrative purposes only, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A powder and granular material sampling device, characterized in that: include: Buffer bin; The buffer bin can allow powder to pass through and temporarily store the powder; A material receiving device, used to store the powder after sampling; A material suction device, used to transfer the powder passing through the buffer bin to the material receiving device; One end of the material suction device is connected to the buffer bin, and the other end of the material suction device is connected to the material receiving device; The vacuum generating device can form a vacuum negative pressure suction force on the material suction device; the vacuum generating device is connected to the material suction device.

2. The powder and granular material sampling device according to claim 1, characterized in that: The material suction device comprises: a sampling pipe and a material suction pipe; the material suction pipe is connected to the material receiving device; one end of the sampling pipe is connected to the material suction pipe, and the other end of the sampling pipe is connected to the buffer bin; the vacuum generating device is connected to the material suction pipe.

3. The powder and granular material sampling device according to claim 2, characterized in that: The material suction pipe includes: a vertical part and an inclined part; the vertical part is arranged at the upper end of the material receiving device; one end of the inclined part is connected to the vertical part, and the other end of the inclined part is connected to the sampling pipe; the vacuum generating device is connected to the inclined part.

4. The powder and granular material sampling device according to claim 3, characterized in that: The inclination angle of the inclined portion is greater than the repose angle of the powder.

5. The powder and granular material sampling device according to any one of claims 2 to 4, characterized in that: The vacuum generating device comprises: a compressed air pipeline and a regulating valve; the compressed air pipeline is connected to the material suction pipeline; the regulating valve is arranged at the input end of the compressed air pipeline.

6. The powder and granular material sampling device according to claim 5, characterized in that: A vacuum sampler is arranged at the connection between the compressed air pipeline and the material suction pipeline.

7. The powder and granular material sampling device according to any one of claims 2 to 4, characterized in that: The material receiving device comprises: a dust collector and an automatic discharge valve; the material suction pipeline is connected to the dust collector; and the automatic discharge valve is arranged at the bottom of the dust collector.

8. The powder and granular material sampling device according to claim 7, characterized in that: A first exhaust port is arranged at the upper end of the dust collector.

9. The powder and granular material sampling device according to claim 7, characterized in that: The dust collector is also provided with a back-blowing air pipeline, a filter element and a material level switch capable of detecting the powder sampling amount.

10. The powder and granular material sampling device according to any one of claims 2 to 4, characterized in that: The buffer bin is a funnel-shaped buffer bin; a second exhaust port is also arranged at the upper end of the buffer bin.

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