Impurity degree detection device

Abstract

The utility model belongs to the technical field of measuring instruments, and discloses an impurity degree detection device which comprises a sample injection cup, an impurity filter and a camera, a sample injection cavity is formed in the sample injection cup, a liquid injection hole communicated with the sample injection cavity is formed in one side of the sample injection cup, and a liquid outlet hole communicated with the sample injection cavity and the outside is formed in the bottom of the sample injection cup; the impurity filtering sheet is detachably arranged at the bottom of the sample injection cup and covers the liquid outlet hole; the camera is arranged above the sample injection cup, and the camera is configured to obtain a two-dimensional image of the impurity filter. The impurity degree detection device can utilize the camera to acquire the two-dimensional image of the impurity filter arranged at the bottom of the sample injection cup, so that the impurity filter does not need to be taken out during detection, and the detection efficiency and the detection precision are high.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring instruments, in particular to an impurity detection device. Background Art

[0002] As a common food in our daily life, dairy products have high requirements for safety and production quality. In order to ensure the quality of dairy products before leaving the factory, dairy products usually need to undergo complex testing steps before leaving the factory. For example, sensory testing, which usually involves testing items such as taste, smell, and impurity level.

[0003] In the traditional dairy product impurity detection project process, professional testers are required to pick up the impurity filter from the funnel, and then compare the impurity filter with the impurity standard sheet by naked eye based on work experience. Not only is the impurity filter easily damaged during the picking process, affecting the test results, but the test efficiency is also low. Utility Model Content

[0004] The utility model aims to provide an impurity detection device, which can effectively improve the impurity detection speed and has high detection efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] An impurity detection device comprises a sampling cup, an impurity filter and a camera, wherein the sampling cup is provided with a sampling cavity, a liquid injection hole connected to the sampling cavity is provided on one side of the sampling cup, and a liquid outlet hole connected to the sampling cavity and the outside is provided at the bottom of the sampling cup; the impurity filter is detachably arranged at the bottom of the sampling cup and covers the liquid outlet hole; the camera is arranged above the sampling cup, and the camera is configured to obtain a two-dimensional image of the impurity filter.

[0007] In one embodiment, the impurity detection device further includes a water injection assembly, which includes a water injection valve and a water injection pipe. The water injection pipe is connected to the sampling chamber through the injection hole, and the water injection valve is arranged on the water injection pipe.

[0008] In one embodiment, the water injection assembly further comprises a water level monitoring component communicatively connected to the water injection valve, wherein the water level monitoring component is configured to monitor the height of the liquid in the injection chamber.

[0009] In one embodiment, the impurity detection device further includes a drainage component, and the drainage component includes a drainage pipe and a drainage valve. The drainage pipe is connected to the sampling chamber through the liquid outlet, and the drainage valve is arranged on the drainage pipe.

[0010] In one embodiment, the drainage assembly further includes an overflow pipe, the injection cup is provided with an overflow hole, and the overflow pipe connects the injection chamber with the outside through the overflow hole.

[0011] In one embodiment, the impurity detection device further includes a cleaning component, which further includes a stirring blade and a first driving member. The stirring blade is rotatably disposed at the bottom of the injection chamber, and the first driving member is configured to drive the stirring blade to rotate.

[0012] In one embodiment, the injection chamber includes a first cavity and a second cavity which are interconnected, the second cavity is located below the first cavity and forms a step with the first cavity, the impurity filter is placed on the step, and the stirring blade is arranged in the second cavity.

[0013] In one embodiment, the impurity detection device further includes a fill light, and the fill light is configured to provide light for the camera.

[0014] In one embodiment, the impurity detection device further includes a shell and a cover plate, the sample injection cup is disposed in the shell, the cover plate can cover an open end of the shell, and the camera is disposed on the cover plate.

[0015] In one embodiment, the injection cup is made of a transparent material, a scale is provided on the injection cup, and an observation window is provided on the housing at a position corresponding to the scale.

[0016] Beneficial effects of the utility model:

[0017] The impurity detection device in the utility model can use a camera to take a picture of the impurity filter located at the bottom of the sampling cup to form a two-dimensional image, and then directly compare the two-dimensional image of the impurity filter with the image of the impurity standard sheet to detect the impurity content in the sample to be tested, without taking out the impurity standard sheet, and has high detection efficiency and detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the external structure of the impurity detection device in the embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the impurity detection device in the embodiment of the utility model;

[0020] Figure 3 It is a top view of the impurity detection device in the embodiment of the utility model.

[0021] In the figure:

[0022] 1. Injection cup; 1a. Injection chamber; 1b. Injection hole; 1c. Outlet hole; 1d. Overflow hole; 2. Camera; 3. Injection assembly; 31. Injection pipe; 32. Injection valve; 4. Drainage assembly; 41. Drainage pipe; 42. Drainage valve; 43. Overflow pipe; 44. Three-way pipe; 5. Cleaning assembly; 51. Stirring blade; 52. First drive member; 53. Speed ​​reduction clutch; 6. Fill light; 7. Casing; 8. Cover plate; 9. Control panel; 10. Impurity filter. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0027] refer to Figure 1-Figure 3As shown, an impurity detection device is proposed in the embodiment of the utility model, which is used to detect the impurity content in a sample to be tested, and the sample to be tested includes but is not limited to a variety of fluid foods such as dairy products and fruit juice. The impurity detection device includes a sampling cup 1, a camera 2 and an impurity filter 10, wherein the sampling cup 1 is provided with a sampling cavity 1a with an open top, a liquid injection hole 1b connected to the sampling cavity 1a is also provided on one side of the sampling cup 1, and a liquid outlet 1c connected to the sampling cavity 1a and the outside is provided at the bottom of the sampling cup 1, the impurity filter 10 is detachably arranged at the bottom of the sampling cup 1 and covers the liquid outlet 1c, and the camera 2 is arranged above the sampling cup 1 and is configured to obtain a two-dimensional image of the impurity filter 10.

[0028] When the above-mentioned impurity detection device is used, a quantitative amount of the sample to be tested is poured into the sampling cup 1 from the open end of the sampling cup 1, and the sample to be tested flows through the impurity filter 10 and flows out from the liquid outlet 1c of the sampling cup 1. During the flow of the sample to be tested, most of the impurities will remain on the impurity filter 10, and a small part of the impurities will hang on the cup wall of the sampling cup 1 with the sample to be tested, affecting the impurity detection result. Therefore, after most of the sample to be tested flows out of the liquid outlet 1c, a rinse liquid is injected into the sampling cup 1 through the injection hole 1b. The sample to be tested (including impurities) hanging on the inner wall of the sampling cup 1 is washed down by the rinse liquid and continues to flow through the impurity filter 10, and then the camera 2 arranged above the sampling cup 1 is used to obtain a two-dimensional image of the impurity filter 10. By comparing the impurity standard sheet and the two-dimensional image of the impurity filter 10 obtained by the camera 2, a high-precision detection result can be obtained without removing the impurity filter 10 from the sampling cup 1. It is understandable that the sample injection cup 1 can be rinsed multiple times, and the number of rinses can be adaptively adjusted according to the degree of cup adhesion of the sample to be tested.

[0029] refer to Figure 2 As shown, the impurity detection device also includes a cleaning component 5, which includes a stirring blade 51 and a first driving member 52. The stirring blade 51 is rotatably arranged at the bottom of the injection chamber 1a, and the first driving member 52 is connected to the stirring blade 51 to drive the stirring blade 51 to rotate. Under the action of the first driving member 52, the stirring blade 51 can rotate in the injection chamber 1a to automatically clean the injection cup 1 to avoid the residual liquid in the injection chamber 1a affecting the next impurity detection. It can be understood that the cleaning liquid used to clean the injection cup 1 can also enter the injection chamber 1a through the injection hole 1b. The cleaning liquid used for the cleaning liquid is the same as the liquid used for the rinse liquid, for example, filtered distilled water is used to avoid the rinse liquid or the impurities contained in the cleaning liquid affecting the detection of impurities in the sample to be tested. The first driving member 52 is preferably a motor. In order to stop the stirring blade 51 from rotating smoothly, the cleaning component 5 also includes a deceleration clutch 53, and the first driving member 52 is connected to the stirring blade 51 through the deceleration clutch 53.

[0030] Specifically, the injection chamber 1a includes a first cavity and a second cavity which are interconnected, the second cavity is located below the first cavity and its cross section is smaller than the cross section of the first cavity, so as to form a step between the first cavities, the liquid outlet 1c is arranged at the bottom of the second cavity, the impurity filter 10 is placed on the step, and the stirring blade 51 is arranged in the second cavity, the first driving member 52 and the deceleration clutch 53 are both arranged below the injection cup 1, and the output end of the deceleration clutch 53 penetrates the injection chamber 1a and is connected to the stirring blade 51. The first driving member 52 and the deceleration clutch 53 are arranged outside the injection cup 1, so as to avoid the first driving member 52 and the deceleration clutch 53 from contacting the liquid in the injection cup 1, thereby extending the service life. More specifically, in order to prevent the impurity filter 10 from shifting when the sample to be tested enters the injection cup 1, the outer periphery of the impurity filter 10 is fitted with the inner wall of the injection cup 1. In order to reduce the difficulty of placing the impurity filter 10 in the injection cup 1, the cross-sectional area of ​​the first cavity gradually decreases from the open end to the end connected to the second cavity. During detection, the impurity filter 10 can be placed directly on the step from the open end of the injection cavity 1a.

[0031] In order to inject liquid (including rinsing liquid and cleaning liquid) into the sampling cup 1, the impurity detection device also includes a water injection component 3, which includes a water injection valve 32 and a water injection pipe 31. One end of the water injection pipe 31 is connected to the water source, and the other end is connected to the sampling cup 1 through the injection hole 1b. The water injection valve 32 is arranged on the water injection pipe 31 to control the connection between the water injection pipe 31 and the sampling cup 1.

[0032] In order to allow the rinsing liquid or the cleaning liquid to accumulate or be discharged in the sample cup 1 and achieve the effect of flushing the wall of the sample cup 1, the impurity detection device includes a drainage component 4, and the drainage component 4 includes a drainage pipe 41 and a drainage valve 42. The drainage pipe 41 is connected to the sample chamber 1a through the liquid outlet 1c, and the drainage valve 42 is arranged on the drainage pipe 41. By adjusting the on-off of the drainage valve 42, the on-off control of the sample chamber 1a and the outside world can be achieved. When the sample to be tested is poured into the sample chamber 1a, the drainage valve 42 is opened. When the sample to be tested flows out of the sample chamber 1a from the liquid outlet 1c, the drainage valve 42 is closed, and then the rinsing liquid or the cleaning liquid is injected into the sample chamber 1a through the injection hole 1b.

[0033] The drain valve 42 and the water injection valve 32 are both electrically controlled valves to achieve automatic control. On this basis, the impurity detection device further includes a control circuit board, which is electrically connected to the drain valve 42 and the water injection valve 32 to control the automatic on and off of the drain valve 42 and the water injection valve 32. At the same time, the control circuit board is also electrically connected to the first driving member 52 to control the opening and closing of the first driving member 52.

[0034] In one embodiment, the water injection assembly 3 further includes a water level monitoring component, which is connected to the water injection valve 32 through a control circuit board. The water level monitoring component is used to monitor the liquid height in the injection chamber 1a. When the water level monitoring component detects that the liquid height in the injection chamber 1a reaches a preset height, that is, the amount of liquid entering the injection chamber 1a reaches a preset amount, a feedback signal is given to the control circuit board, and the control circuit board controls the water injection valve 32 to close, and the drain valve 42 is opened after the water injection valve 32 is closed for a period of time to discharge the liquid from the injection chamber 1a. The connection method and control principle of the control circuit board with the water injection valve 32, the drain valve 42 and the first drive member 52 are all prior art and will not be described in detail in this embodiment.

[0035] In order to prevent the liquid from overflowing from the injection cup 1 due to failure of the water injection valve 32 and / or the water level monitoring component, the drainage assembly 4 also includes an overflow pipe 43. The injection cup 1 is provided with an overflow hole 1d. The overflow pipe 43 connects the injection chamber 1a and the outside world through the overflow hole 1d. When the liquid level in the injection chamber 1a is higher than the overflow hole 1d, the liquid can be directly discharged through the overflow pipe 43, bypassing the restriction of the drain valve 42.

[0036] Specifically, the drainage assembly 4 further includes a three-way pipe 44 , which is disposed on the drainage pipe 41 , and one end of the overflow pipe 43 is connected to the sample injection cup 1 , and the other end is connected to an outlet of the three-way pipe 44 .

[0037] In order to further improve the accuracy of the image captured by the camera 2, the impurity detection device also includes a fill light 6, which can provide light for the camera 2 to illuminate the impurity filter 10 arranged at the bottom of the injection chamber 1a. Specifically, the fill light 6 is also connected to the control circuit board, and a plurality of fill lights 6 are arranged around the camera 2. In order to increase the service life of the fill light 6, the fill light 6 is a waterproof fill light.

[0038] In order to improve the integration, the impurity detection device also includes a shell 7 with an open top. The sampling cup 1, the first driving member 52, the deceleration clutch 53, the three-way pipe 44, and the drain pipe 41 are all arranged inside the shell 7, and the end of the drain pipe 41 away from the sampling cup 1 passes through the shell 6.

[0039] In one embodiment, the impurity detection device further includes a cover plate 8, which can cover an open end of the housing 7 to block the opening of the housing 7 to prevent foreign matter or dust from entering the injection chamber 1a when the impurity detection device is not in use.

[0040] In one embodiment, the fill light 6 and the camera 2 are both disposed on the cover plate 8. When performing impurity detection, the cover plate 8 is opened, and after the sample to be tested is poured into the sample injection cup 1, the cover plate 8 is closed so that the fill light 6 and the camera 2 on the cover plate 8 correspond to the position of the impurity filter 10.

[0041] In one embodiment, the cover plate 8 is hinged to the housing 7, and the impurity detection device further comprises a second driving member, which is connected to a hinge shaft of the cover plate 8 and the housing 7 to drive the hinge shaft to rotate, so as to realize automatic opening and closing of the cover plate 8. The second driving member is preferably a motor, which is also electrically connected to the control circuit board.

[0042] In one embodiment, the impurity detection device also includes a control panel 9 electrically connected to the control circuit board. The control panel 9 is integrated on the housing 7, and the control circuit board is located inside the housing 7. The control panel 9 includes adjustment buttons for setting the water inlet volume and the number of rinses of the sampling cup 1, as well as a detection control button and a cleaning control button. The detection control button is used to start the detection program, and the cleaning control button is used to start the cleaning program.

[0043] In order to realize automatic detection, the impurity detection device is also provided with a connection interface that can be connected to a computer. The computer is installed with image comparison software, which can compare the acquired two-dimensional image of the impurity filter sheet 10 with the two-dimensional image of the impurity standard sheet, so that the impurity detection result of the sample to be tested can be directly obtained, which has higher detection accuracy than the naked eye comparison. The image comparison software can adopt any existing software with image comparison function, which is not within the scope of improvement of this embodiment.

[0044] In order to achieve quantitative detection, the sampling cup 1 is made of a transparent material including but not limited to acrylic board, and is provided with a scale for measuring the volume of the sample to be tested entering the sampling chamber 1a. An observation window is provided at a position corresponding to the scale on the outer shell 7, which eliminates the operation of quantitatively measuring the liquid to be tested in advance and simplifies the operating steps of impurity detection.

[0045] The steps for using the above impurity detection device are as follows:

[0046] (1) Pour the sample to be tested into the injection chamber 1a of the injection cup 1. During the pouring process, pay attention to the change in the liquid level in the injection chamber 1a. When the liquid level rises to a certain predetermined scale value, stop adding the sample to be tested to achieve quantitative addition.

[0047] (2) The water inlet volume and the number of rinses are set using the control panel 9. The detection program of the impurity detection device is started by the detection control button. The cover plate 8 is automatically closed, the drain valve 42 is closed, the water injection valve 32 is opened, and the rinse liquid is injected into the injection chamber 1a through the injection hole 1b. When the set water inlet volume is reached, the water level monitoring component sends a signal, the water injection valve 32 is closed, and the drain valve 42 is opened, and the injection cup 1 is rinsed according to the predetermined number of rinses.

[0048] (3) The camera 2 takes a picture of the impurity filter 10 to form a two-dimensional image of the impurity filter 10 .

[0049] (4) Compare the two-dimensional image of the impurity filter sheet 10 with the two-dimensional image of the impurity standard sheet to obtain the detection result.

[0050] (5) The impurity filter 10 is taken out, and the cleaning program of the impurity detection device is started by pressing the cleaning control button. The cover plate 8 is automatically closed, the drain valve 42 is closed, the water injection valve 32 is opened, and the cleaning liquid is injected into the injection chamber 1a through the injection hole 1b. The first driving member 52 drives the stirring blade 51 to rotate to achieve the cleaning of the injection cup 1. After the set water intake volume is reached, the water injection valve 32 is closed and the drain valve 42 is opened.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An impurity detection device, characterized in that: include: A sampling cup (1), wherein a sampling cavity (1a) is arranged inside the sampling cup (1), a liquid injection hole (1b) connected to the sampling cavity (1a) is arranged on one side of the sampling cup (1), and a liquid outlet hole (1c) connected to the sampling cavity (1a) and the outside is arranged at the bottom of the sampling cup (1); An impurity filter (10) is detachably arranged at the bottom of the sample injection cup (1) and covers the liquid outlet (1c); A camera (2) is arranged above the sample injection cup (1), and the camera (2) is configured to obtain a two-dimensional image of the impurity filter (10).

2. The impurity detection device according to claim 1, characterized in that: The impurity detection device further comprises a water injection assembly (3), the water injection assembly (3) comprising a water injection valve (32) and a water injection pipe (31), the water injection pipe (31) being connected to the injection chamber (1a) through the liquid injection hole (1b), and the water injection valve (32) being arranged on the water injection pipe (31).

3. The impurity detection device according to claim 2, characterized in that: The water injection assembly (3) further comprises a water level monitoring component which is in communication connection with the water injection valve (32), and the water level monitoring component is configured to monitor the height of the liquid in the injection chamber (1a).

4. The impurity detection device according to claim 1, characterized in that: The impurity detection device further comprises a drainage component (4), wherein the drainage component (4) comprises a drainage pipe (41) and a drainage valve (42), wherein the drainage pipe (41) is connected to the sample injection chamber (1a) via the liquid outlet hole (1c), and the drainage valve (42) is arranged on the drainage pipe (41).

5. The impurity detection device according to claim 4, characterized in that: The drainage assembly (4) further comprises an overflow pipe (43), the injection cup (1) is provided with an overflow hole (1d), and the overflow pipe (43) is connected with the injection chamber (1a) and the outside world through the overflow hole (1d).

6. The impurity detection device according to claim 1, characterized in that: The impurity detection device further comprises a cleaning component (5), wherein the cleaning component (5) further comprises a stirring blade (51) and a first driving member (52), wherein the stirring blade (51) is rotatably disposed at the bottom of the injection chamber (1a), and the first driving member (52) is configured to drive the stirring blade (51) to rotate.

7. The impurity detection device according to claim 6, characterized in that: The injection chamber (1a) comprises a first chamber and a second chamber which are interconnected, the second chamber is located below the first chamber and forms a step with the first chamber, the impurity filter (10) is placed on the step, and the stirring blade (51) is arranged in the second chamber.

8. The impurity detection device according to any one of claims 1 to 7, characterized in that: The impurity detection device further comprises a fill light (6), and the fill light (6) is configured to provide light for the camera (2).

9. The impurity detection device according to any one of claims 1 to 7, characterized in that: The impurity detection device further comprises a housing (7) and a cover plate (8), the sample injection cup (1) is arranged in the housing (7), the cover plate (8) can cover an open end of the housing (7), and the camera (2) is arranged on the cover plate (8).

10. The impurity detection device according to claim 9, characterized in that: The injection cup (1) is made of a transparent material, a scale is provided on the injection cup (1), and an observation window is provided on the housing (7) at a position corresponding to the scale.

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