CN220104795U

CN220104795U - Granularity detecting system

Info

Publication number: CN220104795U
Application number: CN202321445850.3U
Authority: CN
Inventors: 龚晓春; 曹咸江; 李新浩; 吴文杰; 王江鹏; 朱明浩
Original assignee: BUHLER (WUXI) COMMERCIAL CO LTD
Current assignee: BUHLER (WUXI) COMMERCIAL CO LTD
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2023-11-28
Anticipated expiration: 2033-06-07

Abstract

The utility model relates to a granularity detection system, comprising: a sampling subsystem comprising a plurality of sampling points adapted to be connected to a granular product production line; an analysis subsystem, coupled to the outlet end of the sampling subsystem, configured to capture and analyze a dynamic particulate image of the particulate product; a recovery subsystem connected to the outlet end of the analysis subsystem, adapted to be connected to a granular product production line; a motive subsystem in fluid communication with the analysis subsystem and the recovery subsystem, respectively, configured to provide a negative pressure air flow adapted to move the granular product; and a control subsystem electrically connected to the analysis subsystem and adapted to be electrically connected to process equipment of the granular product production line. According to the granularity detection system provided by the utility model, the products can be subjected to multipoint sampling and photographing analysis, the sampling quantity is increased, the accuracy of analysis results is improved, the interval time between production and detection can be shortened, and the product qualification rate is improved.

Description

Granularity detecting system

Technical Field

The present utility model relates generally to the field of particle detection, and more particularly to a particle size detection system.

Background

In the processing and production process of granular products (especially powdery products such as flour) the detection of the granularity of the products is beneficial to making corresponding adjustment on the production process flow, effectively improving the production efficiency and avoiding unnecessary waste.

At present, the granularity detection means of the flour processing industry is relatively backward, whether the particles are qualified or not is judged mainly by a manual hand pinching method, a visual inspection method or an off-line laboratory screening method, and further relevant production process parameters are adjusted, so that the product quality controllability is lower.

For example, traditional off-line testing is to take samples at production sites once every 3-4 hours, and then take them to a laboratory analytical instrument for screening. The method has the defects of manual sampling, poor sampling stability, long sampling and screening time, slower detection result than production, untimely guiding effect on production, increased probability of products out of specification, and incapability of adapting to the requirements of modern technical development on production process and product quality.

Disclosure of Invention

It is an object of the present utility model to provide a particle size detection system that overcomes at least one of the above-mentioned drawbacks of the prior art. That is, the detection system according to the present utility model is capable of detecting the granularity of a granular product on line, continuously and in real time for rapid analysis and regulation.

To this end, the present utility model provides a granularity detection system comprising: a sampling subsystem comprising a plurality of sampling points adapted to be connected to a granular product production line; an analysis subsystem connected to the outlet end of the sampling subsystem and configured to capture and analyze a dynamic particulate image of the particulate product; a recovery subsystem connected to an outlet end of the analysis subsystem and adapted to be connected to the granular product production line; a power subsystem in fluid communication with the analysis subsystem and the recovery subsystem, respectively, and configured to provide a negative pressure gas flow adapted to move the granular product; and a control subsystem electrically connected to the analysis subsystem and adapted to be electrically connected to process equipment of the granular product production line.

According to an alternative embodiment of the utility model, the sampling subsystem comprises a plurality of samplers respectively arranged at the plurality of sampling points, the plurality of samplers comprising a plurality of automatic samplers and at least one manual sampler.

According to an alternative embodiment of the utility model, the sampling subsystem further comprises: a main material pipe; a plurality of material dividing pipelines which are arranged in parallel; wherein, one end of each of the plurality of divide material pipeline is connected to corresponding the sampler, and the other end is connected to main material pipeline.

According to an alternative embodiment of the utility model, each of the plurality of samplers comprises: a feed inlet adapted to be connected to the granular product line; the first discharge port is connected to the corresponding material separating pipeline; and a second outlet adapted to be connected to the granular product line.

According to an alternative embodiment of the utility model, the main material pipe is provided with a viewing window.

According to an alternative embodiment of the utility model, the analysis subsystem comprises: a first material separator disposed at an outlet end of the sampling subsystem and forming an inlet end of the analysis subsystem and configured to separate the negative pressure gas stream from the particulate product entering the analysis subsystem.

According to an alternative embodiment of the utility model, the analysis subsystem further comprises: the inlet end of the first buffer section is connected to the outlet end of the first material separator, a first valve is arranged between the first buffer section and the first material separator, and a first sensor suitable for detecting the stacking position of the granular products is arranged in the first buffer section; and the inlet end of the detection section is connected to the outlet end of the first buffer section, and a second valve is arranged between the first buffer section and the detection section.

According to an alternative embodiment of the utility model, the recovery subsystem comprises: a second material separator disposed at an outlet end of the analysis subsystem and constituting an inlet end of the recovery subsystem and configured to separate the negative pressure gas stream and the particulate product entering the recovery subsystem.

According to an alternative embodiment of the utility model, the recovery subsystem further comprises: the inlet end of the second buffer section is connected to the outlet end of the second material separator, a third valve is arranged between the second buffer section and the second material separator, and a second sensor suitable for detecting the stacking position of the granular products is arranged in the second buffer section; and the inlet end of the recovery section is connected to the outlet end of the second buffer section, and a fourth valve is arranged between the second buffer section and the recovery section.

According to an alternative embodiment of the utility model, the power subsystem comprises: a negative pressure air source; and the gas transmission pipeline comprises a main gas transmission pipe connected to the negative pressure gas source, and a first gas distribution pipe and a second gas distribution pipe which are arranged in parallel, wherein one end of the first gas distribution pipe is connected to the analysis subsystem, the other end of the first gas distribution pipe is connected to the main gas transmission pipe, one end of the second gas distribution pipe is connected to the recovery subsystem, and the other end of the second gas distribution pipe is connected to the main gas transmission pipe.

Compared to the prior art, the particle size detection system according to the present utility model has several advantages, in particular: the granular products are subjected to multipoint sampling and photographing analysis through the sampling subsystem and the analysis subsystem, the sampling quantity is increased, the accuracy of analysis results is improved, and the process equipment of the production line is timely adjusted through the control subsystem, so that the production and detection interval time is shortened, and the product percent of pass is improved.

Drawings

Other features and advantages of the present utility model will be better understood from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings. In the drawings, the same reference numerals refer to the same or similar parts.

FIG. 1 is a front view of a particle size detection system according to one embodiment of the utility model;

FIG. 2 is a perspective view of the particle size detection system of FIG. 1;

FIG. 3 is a schematic flow chart illustrating the operation of the particle size detection system of FIG. 1;

FIG. 4 is a cross-sectional view of a sampler of the particle size detection system of FIG. 1;

FIG. 5 is an enlarged view of a portion of the analysis subsystem of the particle size detection system of FIG. 1.

Detailed Description

The making and using of the specific embodiments are discussed in detail below. It should be understood, however, that the detailed description and the specific examples, while indicating specific ways of making and using the utility model, are given by way of illustration only and are not intended to limit the scope of the utility model.

In this specification, directional expressions such as "upper", "lower", "left", "right", etc. are not absolute, but relative, in describing the structural positions of the respective components. These directional expressions are appropriate when the various components are disposed as shown in the figures, but should be changed as the position of the various components in the figures changes.

Referring to fig. 1 and 2, the particle size detection system according to the present utility model is suitable for detecting the particle size of a granular product, and is particularly suitable for detecting the particle size of a powdery product having a small particle diameter. The granularity detection system comprises a sampling subsystem 1, an analysis subsystem 2, a recovery subsystem 3, a power subsystem 4 and a control subsystem 5. Wherein, sampling subsystem 1, analysis subsystem 2 and recovery subsystem 3 are connected in series in order. The power subsystem 4 is in fluid communication with the analysis subsystem 2 and the recovery subsystem 3, respectively, and is configured to provide a negative pressure gas flow suitable for moving granular or powdered products. The control subsystem 5 is electrically connected to the analysis subsystem 2 and to the process equipment on the production line of granular or powder products, respectively, and makes real-time adjustments to the process equipment on the production line based on the real-time analysis results of the analysis subsystem 2.

The sampling subsystem 1 comprises a plurality of sampling points suitable for connection to a production line of granular or powdery products. A plurality of samplers 111 are provided at the plurality of sampling points, respectively, to sample granular or powdery products at a plurality of positions on the production line, respectively. Wherein the sampling hopper 1111 of each sampler 111 collects granular or powder products falling from the production line, and the piston rod of the cylinder is pushed to move by the compressed air, so that the piston 116 in the sampler 111 is driven to scrape the granular or powder products. A sampling pipe 112 is connected to the outlet end of each sampler 111. Sampling conduit 112 includes a main material conduit 1121 and a plurality of sub-material conduits 1122 arranged in parallel. Wherein one end of each of the plurality of sub-material pipes 1122 is connected to the corresponding sampler 111 and the other end is connected to the main material pipe 1121, and closing the other sub-material pipes 1122 while opening at least one sub-material pipe 1122 at a time. A viewing window 113 is provided in the main material conduit 1121 to facilitate viewing the status of the granular or powdered product within the conduit.

It will be appreciated that the number and arrangement of the split material conduits 1122 and the main material conduit 1121 are determined according to actual needs and the utility model is not limited in this regard. For example, according to the illustrated embodiment, one main material conduit 1121 is provided that is arranged in a generally horizontal direction and nine sub-material conduits 1122 are provided that are arranged in parallel in a generally vertical direction. For example, a plurality of parallel main material pipes 1121 may be provided, and the same or different number of material dividing pipes 1122 may be provided in parallel to each main material pipe 1121. According to one embodiment variant, the main material duct 1121 may also be arranged in a bent shape according to practical circumstances, to which the present utility model is not limited.

As shown in fig. 2 and 4, each of the samplers 111 includes a feed port 111a, a first discharge port 111b, and a second discharge port 111c. Wherein the first outlet 111b is connected to the corresponding material dividing pipe 1122 and the second outlet 111c is connected to a granular or powder product line. A lateral pipe 115 is provided in the sampler 111, and the diameter of the lateral pipe 115 is smaller than the diameter of the feed port 111 a. The piston 116 moves left and right in the transverse duct 115 to scrape off the granular or powdery product that falls into the transverse duct. The granular or powdery product enters the sampler 111 from the feed inlet 111a, one part of the granular or powdery product is scraped into the first discharge outlet 111b by the piston 116 and then enters the material separating pipeline 1122, and the other part of the granular or powdery product which is not scraped falls back to the production line through the second discharge outlet 111c. Each of the samplers 111 is provided with a corresponding sampling valve 114 (a first sampling valve 1141 at the leftmost end of the sampler 111 to a ninth sampling valve 1149 at the rightmost end of the sampler 111 as shown). The sampling valve 114 is electrically connected with the control subsystem 5, and is controlled by the control subsystem 5 to start and stop. In operation of the system, any one or more of the sampling valves 114 may be opened as desired. For example, the first sampling valve 1141 is opened, and the second sampling valve 1142 to the ninth sampling valve 1149 are closed; the second sampling valve 1142 and the third sampling valve 1143 are opened, and the first sampling valve 1141 and the fourth sampling valves 1144 to the ninth sampling valves 1149 are closed. Single or multiple point real-time sampling may be achieved by providing multiple samplers 111, sampling valves 114, and split material pipes 1122 in parallel.

According to the illustrated embodiment, an inlet end of a split material conduit 1122 is connected to a sampler 111. According to one embodiment, the inlet end of one split material pipe 1122 may also be connected to a plurality of samplers 111, which is not limited in this regard. Further, the plurality of samplers 111 includes a plurality of automatic samplers 111A and at least one manual sampler 111B. Wherein the inlet end of the manual sampler 111B is in an open structure, and the inlet end of the automatic sampler 111A is connected to the outlet end of the production line. For example, according to the illustrated embodiment, eight auto samplers and one manual sampler are provided. It will be appreciated that the number of automatic samplers and manual samplers is determined according to actual needs, for example, a plurality of manual samplers may be provided, and the present utility model is not limited thereto. The automatic sampler 111A is convenient for realizing the automatic operation of the system, and has better sealing performance. The use of manual sampler 111B may facilitate the performance of random tests by the operator. The use of the automatic sampler 111A in combination with the manual sampler 111B increases the flexibility of the system while improving the detection efficiency.

As shown in fig. 1 and 3, an analysis subsystem 2 is connected to the outlet end of the sampling subsystem 1 and is configured to capture and analyze dynamic particle images of granular or powdered products. The analysis subsystem 2 comprises a first material separator 21, which first material separator 21 is arranged at the outlet end of the sampling subsystem 1 and constitutes the inlet end of the analysis subsystem 2. The first material separator 21 is configured to separate (via the first gas-dividing conduit 4221) the negative pressure gas stream flowing to the power subsystem 4 and the granular or powdered product flowing to the analysis subsystem 2. Centrifugal force separates the granular or powdery product from the negative pressure air flow and traps the granular or powdery product on the wall, and then the granular or powdery product falls down by gravity.

The analysis subsystem 2 further comprises a first buffer section 22 and a detection section 23. The detection section 23 is provided with a detection device 231 and the first buffer section 22 is provided with a first sensor (not shown) adapted to detect the position of accumulation of the granular or powdery product. Wherein the inlet end of the first buffer section 22 is connected to the outlet end of the first material separator 21, and a first valve 24 is disposed between the first buffer section 22 and the first material separator 21. The inlet end of the detection section 23 is connected to the outlet end of the first buffer section 22, and a second valve 25 is provided between the first buffer section 22 and the detection section 23.

The first valve 24 is opened and the granular or powdered product enters the first buffer section 22. When the first sensor detects the presence of the granular or powdery product and the position where the granular or powdery product is accumulated reaches a preset value, the first valve 24 is closed, and the negative pressure air flow is stopped. The second valve 25 is opened and the granular or powdery product falls into the detection section 23. By providing the first valve 24 and the second valve 25, on the one hand, the granular or powdery product can be detected in batches to avoid blending, and on the other hand, the flow of the granular or powdery product can be controlled to avoid accumulation of the granular or powdery product at the inlet of the detection section 23.

In the above embodiment, the first sensor may detect the presence of the granular or powdery product and monitor the position of the granular or powdery product. Preferably, the first sensor is a capacitive sensor disposed proximate to the second valve 25. It will be appreciated that the number, location and type of sensors are determined according to actual needs, and the present utility model is not limited by comparison. According to an embodiment variant, a surface position sensor, for example a vision sensor, a laser sensor or a radar sensor, etc., may be provided in the middle of the first buffer section 22.

The analysis subsystem 2 is connected to the outlet end of the sampling subsystem 1 and is configured to capture and analyze dynamic particle images of granular or powdered products. Preferably, the analysis subsystem 2 is provided with an optical amplifying assembly, an imaging device, an image analysis device, and the like. The granular or powdery product is amplified by the optical amplifying assembly, a dynamic granular image is obtained by photographing by the photographing device, the dynamic granular image is analyzed by the image analysis equipment, and the analysis result is transmitted to the control subsystem 5 by the electric signal. Preferably, the analysis subsystem 2 can detect granular or powdered products with a particle size in the range of 0.55-33792 μm. The detected granular or powdered product flows through conduit 26 to recovery subsystem 3.

The recovery subsystem 3 is connected to the outlet end of the analysis subsystem 2. The recovery subsystem 3 comprises a second physical separator 31. The second material separator 31 is disposed at the outlet end of the analysis subsystem 2 and constitutes the inlet end of the recovery subsystem 3 and is configured to separate (via the second gas distribution conduit 4222) the negative pressure gas stream flowing to the power subsystem 4 from the particulate or powdered product flowing to the recovery subsystem 3.

As shown in fig. 1 and 3, recovery subsystem 3 further includes a second buffer section 32 and a recovery section 33. The inlet end of the second buffer section 32 is connected to the outlet end of the second material separator 31, and a third valve 34 is provided between the second buffer section 32 and the second material separator 31. The inlet end of the recovery section 33 is connected to the outlet end of the second buffer section 32, and a fourth valve 35 is provided between the second buffer section 32 and the recovery section 33. A second sensor (not shown) adapted to detect the location of the accumulation of granular or powdered product is disposed within the second buffer section 32.

When the recovery subsystem 3 is started, the third valve 34 is opened and the granular or powdery product enters the second buffer section 32. When the second sensor detects the granular or powdery product and the position where the granular or powdery product is accumulated reaches a preset value, the third valve 34 is closed, and the negative pressure air flow is stopped. The fourth valve 35 is opened and the granular or powdery product falls into the recovery section 33.

In the above embodiment, the first material separator 21 and the second material separator 31 may be configured as cyclone separators or separation bags, and the present utility model is not limited thereto. Preferably, both the first material separator 21 and the second material separator 31 are provided as material separation saxophones.

As shown in fig. 1 to 3, the power subsystem 4 includes a negative pressure gas source 41 and a gas line 42. The gas pipe 42 includes a main gas pipe 421 connected to a negative pressure gas source, and a first branch gas pipe 4221 and a second branch gas pipe 4222 arranged in parallel. Wherein one end of the first gas distribution pipe 4221 is connected to the first material separator 21 of the analysis subsystem 2, and the other end is connected to the main gas distribution pipe 421; the second branch gas line 4222 is connected at one end to the second material separator 31 of the recovery subsystem 3 and at the other end to the main gas line 421. The negative pressure air source 41 provides a negative pressure air flow into the air line 42 to move the granular or powdered product in the system. Preferably, the negative pressure air source 41 is provided as a fan.

Under the action of the negative pressure air source 41, the air flow drives the granular or powdery product to move from the material dividing pipe 1122 towards the main material pipe 1121, and then flows from the main material pipe 1121 to the first material separator 21. At the first material separator 21, the gas stream is separated from the granular or powdery product and moves from the first material separator 21 towards the first gas distribution pipe 4221. At the second material separator 31, the gas stream is separated from the granular or powder product and moves from the second material separator 31 towards the second gas distribution pipe 4222. The air flows in the first and second branch air delivery pipes 4221 and 4222 converge to the main air delivery pipe 421 and move toward the negative pressure air source 41. As shown in fig. 3 and 5, a first air valve 44 is provided between the first gas distribution pipe 4221 and the first material separator 21, and a second air valve 45 is provided between the second gas distribution pipe 4222 and the second material separator 31. The first air valve 44 and the second air valve 45 are used for controlling the opening and closing of the air flows in the first branch air pipe 4221 and the second branch air pipe 4222, respectively.

The power subsystem 4 further includes a filter arrangement 43, the filter arrangement 43 including a first inlet end 431, a second inlet end 432, and an outlet end 433. The first inlet end is connected to the outlet end of the negative pressure air source 41 and the second inlet end 432 is connected to the main air line 421 to provide negative pressure air flow to the detection system. The outlet port 433 is connected to the outside to discharge impurities, i.e., the negative pressure air streams drawn from the analysis subsystem 2 and the recovery subsystem 3 are filtered by the filtering device 43 and discharged to the atmosphere.

In the above embodiments, the sampling valve 114, the first valve 24, the second valve 25, the third valve 34, the fourth valve 35, the first air valve 44, the second air valve 45, etc. may be solenoid valves or manual valves.

The control subsystem 5 adjusts the process equipment of the production line by the analysis results provided by the analysis subsystem 2. Preferably, the granularity size proportion of the granular or powdery product is used as a detection parameter and a threshold value is set, and when the granularity size proportion of the granular or powdery product is within the threshold value range, namely the granularity size proportion of the powdery product is qualified, the production process is not changed; when the granularity size proportion of the granular or powdery product is unqualified, the production process is correspondingly and automatically adjusted.

Preferably, the control subsystem 5 is integrated in, i.e. forms part of, the central control system of PLC (Programmable Logic Controller) of the granular or powdery product production apparatus. The detection system can continuously, rapidly and timely track and feed back the granularity distribution and the variation trend of the granular or powdery product particles in the production conveying pipeline for 24 hours, and can visually convert the detection result through a graph and control the detection result in real time, so that the stability and the continuity of the quality of the granular or powdery product are improved.

While the foregoing has described the technical content and features of the present utility model, it will be appreciated that those skilled in the art, upon attaining the teachings of the present utility model, may make variations and improvements to the concepts disclosed herein, which fall within the scope of the present utility model.

The above description of embodiments is illustrative and not restrictive, and the scope of the utility model is defined by the claims.

Claims

1. A particle size detection system, comprising:

a sampling subsystem comprising a plurality of sampling points adapted to be connected to a granular product production line;

an analysis subsystem connected to the outlet end of the sampling subsystem and configured to capture and analyze a dynamic particulate image of the particulate product;

a recovery subsystem connected to an outlet end of the analysis subsystem and adapted to be connected to the granular product production line;

a power subsystem in fluid communication with the analysis subsystem and the recovery subsystem, respectively, and configured to provide a negative pressure gas flow adapted to move the granular product; and

and the control subsystem is electrically connected with the analysis subsystem and is suitable for being electrically connected with process equipment of the granular product production line.

2. The particulate matter detection system of claim 1, wherein the sampling subsystem comprises a plurality of samplers disposed at the plurality of sampling points, respectively, the plurality of samplers comprising a plurality of automatic samplers and at least one manual sampler.

3. The particle size detection system of claim 2, wherein the sampling subsystem further comprises:

a main material pipe; and

a plurality of material dividing pipelines which are arranged in parallel;

wherein, one end of each of the plurality of divide material pipeline is connected to corresponding the sampler, and the other end is connected to main material pipeline.

4. The particle size detection system of claim 3, wherein each of the plurality of samplers comprises:

a feed inlet adapted to be connected to the granular product line;

the first discharge port is connected to the corresponding material separating pipeline; and

and the second discharging port is suitable for being connected to the granular product production line.

5. A particle size detection system as claimed in claim 3 wherein the main material conduit is provided with a viewing window.

6. The particle size detection system of claim 1, wherein the analysis subsystem comprises:

a first material separator disposed at an outlet end of the sampling subsystem and forming an inlet end of the analysis subsystem and configured to separate the negative pressure gas stream from the particulate product entering the analysis subsystem.

7. The particle size detection system of claim 6, wherein the analysis subsystem further comprises:

the inlet end of the first buffer section is connected to the outlet end of the first material separator, a first valve is arranged between the first buffer section and the first material separator, and a first sensor suitable for detecting the stacking position of the granular products is arranged in the first buffer section; and

the inlet end of the detection section is connected to the outlet end of the first buffer section, and a second valve is arranged between the first buffer section and the detection section.

8. The particle size detection system of claim 1, wherein the recovery subsystem comprises:

a second material separator disposed at an outlet end of the analysis subsystem and constituting an inlet end of the recovery subsystem and configured to separate the negative pressure gas stream and the particulate product entering the recovery subsystem.

9. The particle size detection system of claim 8, wherein the recovery subsystem further comprises:

the inlet end of the second buffer section is connected to the outlet end of the second material separator, a third valve is arranged between the second buffer section and the second material separator, and a second sensor suitable for detecting the stacking position of the granular products is arranged in the second buffer section; and

and the inlet end of the recovery section is connected to the outlet end of the second buffer section, and a fourth valve is arranged between the second buffer section and the recovery section.

10. The particulate matter detection system of claim 1, wherein the power subsystem comprises:

a negative pressure air source; and

the gas transmission pipeline comprises a main gas transmission pipe connected to the negative pressure gas source, and a first gas distribution pipe and a second gas distribution pipe which are arranged in parallel, wherein one end of the first gas distribution pipe is connected to the analysis subsystem, the other end of the first gas distribution pipe is connected to the main gas transmission pipe, one end of the second gas distribution pipe is connected to the recovery subsystem, and the other end of the second gas distribution pipe is connected to the main gas transmission pipe.