CN213544307U

CN213544307U - Liquid specific gravity testing device

Info

Publication number: CN213544307U
Application number: CN202022419002.8U
Authority: CN
Inventors: 黄代龙; 卢刚祥; 邓瑰丽; 谭进
Original assignee: ZHUHAI KEYU BIOLOGICAL ENGINEERING CO LTD
Current assignee: ZHUHAI KEYU BIOLOGICAL ENGINEERING CO LTD
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-06-25
Anticipated expiration: 2030-10-27

Abstract

The utility model relates to a liquid specific gravity testing device, which comprises a testing pool, a testing seat, a light source and a sensor; the test pool is internally provided with a liquid sample test area and a sample input channel, and the inner end of the sample input channel is connected with the liquid sample test area; the lower end of the test pool is provided with a glass prism, and the liquid sample test area is positioned on the upper end face of the glass prism; the testing pool is detachably arranged in the testing seat, the light source and the sensor are respectively arranged at the opposite sides of the periphery of the testing seat, and light emitted by the light source during testing penetrates through the testing seat and then is reflected to the sensor through the upper end face of the glass prism. When the specific gravity of the liquid is changed, the reflection angle of the light path is changed, and the change of the light path is measured by using the sensor, so that the specific gravity of the corresponding liquid sample can be obtained, and the characteristics of accurate test, simple and convenient operation, high precision and high speed are achieved; and the liquid specific gravity testing device has simple and ingenious structure, easy production and processing and low cost, and is beneficial to mass production, popularization and application.

Description

Liquid specific gravity testing device

Technical Field

The utility model belongs to the technical field of medical instrument, in particular to liquid proportion testing arrangement.

Background

At present, the specific gravity (urine) of liquid in hospitals can be measured by a pycnometer method, a chemical test strip method, a refractometer method, a weighing method, an ultrasonic method and the like, and the existing measuring methods have many defects, such as: the chemical method is not enough in the precision of the liquid specific gravity test, and the physical method is very inconvenient because the manual operation is adopted for testing the liquid specific gravity.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a can be applied to and carry out physical method test liquid proportion among the automatic liquid analytical instrument to the cooperation of chemical method is used, and the test accuracy is guaranteed, has easy operation, and is convenient, and the precision is high, fast characteristics, and simple structure, ingenious, and the production and processing is easy, with low costs, is favorable to mass production and popularizes the liquid proportion testing arrangement who uses.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a liquid specific gravity testing device comprises a testing pool, a testing seat, a light source and a sensor; the test pool is internally provided with a liquid sample test area and a sample input channel, and the inner end of the sample input channel is connected with the liquid sample test area; the lower end of the test pool is provided with a glass prism, and the liquid sample test area is positioned on the upper end face of the glass prism; the testing pool is detachably arranged in the testing seat, the light source and the sensor are respectively arranged on opposite sides of the periphery of the testing seat, and light rays emitted by the light source during testing penetrate through the testing seat and then are reflected to the sensor through the upper end face of the glass prism.

Further, the outside of glass prism has income plain noodles and play plain noodles respectively towards light source and sensor, go into plain noodles and play plain noodles and be the plane that down inclines inwards from last, and mutual symmetry sets up.

Further, the bottom of glass prism has the bar recess, the both ends of recess extend to the outside surface of glass prism, moreover the recess is located and goes into between plain noodles and the play plain noodles, go into plain noodles and play plain noodles and be mutual symmetry along bar recess.

Furthermore, the section of the groove is n-shaped.

Further, the light incident surface and the light emergent surface are respectively basically parallel to the light source and the sensor.

Furthermore, the test seat is provided with a test pool installation cavity, the outer side surface of the test seat, which is provided with the light source and the sensor, is respectively provided with a light inlet through hole and a light outlet through hole which are communicated with the test pool installation cavity, and the test pool is detachably installed in the test pool installation cavity; light emitted by the light source during testing enters the test cell installation cavity through the light inlet through hole, then enters the glass prism, is reflected by the reflecting surface on the upper end face of the glass prism, and is emitted to the sensor through the light outlet through hole.

Further, the test seat includes base and fixed lid, the upper end of base has the test cell installation cavity, the peripheral opposite side of base is equipped with light source and sensor, and the lateral surface that the base was equipped with light source and sensor in addition has the income light through-hole and the light-emitting through-hole that communicate with the test cell installation cavity respectively.

Furthermore, the sample input channels are more than two, and the inner ends of the sample input channels are connected with the liquid sample testing area in an annular array distribution mode.

Furthermore, the sample input channel is a pipeline, and one end of the sample input channel extends into the interior of the test seat and is connected with the liquid sample test area.

The utility model discloses mainly have following beneficial effect:

through the technical scheme, the utility model can be applied to an automatic liquid analyzer to test the specific gravity of liquid by a physical method, and the chemical method is matched for use, so that the accuracy of the test result is better ensured, and the device has the characteristics of simple and convenient operation, high precision and high speed, and solves the problems of low efficiency, complex operation, easy cross contamination and the like of the conventional handheld physical method for testing the specific gravity; meanwhile, the problem of insufficient testing precision of a chemical method is solved, and the liquid specific gravity testing device is simple and ingenious in structure, easy to produce and process and low in cost, and is beneficial to mass production, popularization and application.

Drawings

Fig. 1 is a schematic structural view of an embodiment of a liquid specific gravity testing device according to the present invention;

FIG. 2 is a schematic structural view of a testing cell in an embodiment of the liquid specific gravity testing apparatus of the present invention;

fig. 3 is a schematic view of the working principle of the embodiment of the liquid specific gravity testing device of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 3:

the embodiment of the utility model provides a liquid proportion testing arrangement, including test cell 1, test seat 2, light source 3 and sensor 4. The test pool 1 is internally provided with a liquid sample test area 11 and a sample input channel 12, the inner end of the sample input channel 12 is connected with the liquid sample test area 11 (preferably, the sample input channel 12 is provided with more than two, and the inner end is connected with the liquid sample test area 11 in an annular array distribution manner, so that the efficiency and the uniformity of liquid input can be improved), the sample input channel 12 can be a pipeline, and one end of the sample input channel extends into the test base 2 and is connected with the liquid sample test area 11; the lower end of the test pool 1 is provided with a glass prism 13, and the liquid sample test area 11 is positioned on the upper end face of the glass prism 13. The test bench is characterized in that the test bench is detachably mounted in the test bench 2, the light source 3 and the sensor 4 are respectively arranged at the opposite sides of the periphery of the test bench 2, the light source 3 provides light required in the test system, the sensor 4 is used for testing the reflection angle (or critical angle) and temperature of a light path, wherein the test bench 2 is provided with a test bench mounting cavity 21, the outer side face of the test bench 2 provided with the light source 3 and the sensor 4 is respectively provided with a light inlet through hole 22 and a light outlet through hole 23 communicated with the test bench mounting cavity 21, and the specific structure can be as follows: the test seat 2 comprises a base 24 and a fixed cover 25, the upper end of the base 24 is provided with a test pool mounting cavity 21, the test pool 1 is detachably mounted in the test pool mounting cavity 21, and the fixed cover 25 covers the upper end of the base 24 (covers the test pool mounting cavity 21, not only plays a role of fixing the test pool 1, but also can shield external light so as to improve test accuracy), and is detachably fixed with the base 24; the light source 3 and the sensor 4 are arranged on the opposite sides of the periphery of the base 24, the base 24 is a trapezoidal base, and the outer side surfaces of the light source 3 and the sensor 4 are respectively provided with a light inlet through hole 22 and a light outlet through hole 23 which are communicated with the test cell installation cavity 21, so that the light path angle can be effectively controlled; wherein, the outside of glass prism 13 has into plain noodles 15 and play plain noodles 16 respectively towards light source 3 and sensor 4, go into plain noodles 15 and play plain noodles 16 and be from last down the plane of slope inwards to mutual symmetry sets up, moreover glass prism 13's bottom has bar groove 17 (groove 17 adopts the recess that the cross-section is the shape of n preferably, can control reflection angle critical value), the both ends of groove 17 extend to glass prism 13's outside surface, groove 17 is located and goes into between plain noodles 15 and play plain noodles 16, go into plain noodles 15 and play plain noodles 16 along bar groove 17 and be mutual symmetry, moreover go into plain noodles 15 and play plain noodles 16 and be parallel with light source 3 and sensor 4 basically respectively.

Liquid proportion testing arrangement's theory of operation do: firstly, liquid is input into a liquid sample testing area 11 of a testing pool 1 through a sample input channel 12, then light rays emitted by a light source 3 pass through a testing seat 2 and then are reflected to a sensor 4 through the upper end surface of a glass prism 13 (specifically, the light rays emitted by the light source 3 enter a testing pool installation cavity 21 through a light inlet through hole 22 and then enter the glass prism 13, are reflected by a reflecting surface (a reflecting surface 18 is formed on an interface between the liquid in the testing area and the contact surface of the glass prism) on the upper end surface of the glass prism 13, and are emitted to the sensor 4 through a light outlet through hole 23. if the specific gravity of the liquid changes, the reflecting angle theta of the light path changes, and the change of the light path is measured by the sensor 4 (as shown in figure 3), the specific gravity of the corresponding liquid sample can be obtained (the principle that the light also has a critical angle on the contact surface between the prism and the liquid, the specific gravity and the refractive index of, the refractive index also changes, and so does the critical angle; under the condition that other conditions are not changed, the refractive index of the liquid can be known by measuring the critical angle, and then the specific gravity of the liquid is reversely deduced. ).

Thus, the liquid specific gravity testing device of the utility model can be applied to an automatic liquid analyzer for testing the specific gravity of liquid by a physical method (for example, applied to the automatic urine analyzer for testing the specific gravity of urine by the physical method), and the chemical method is matched for use, so that the accuracy of the test result is better ensured, and the device has the characteristics of simple and convenient operation, high precision and high speed, and solves the problems of low efficiency, complex operation, easy cross contamination and the like of the specific gravity test by the existing handheld physical method; meanwhile, the problem of insufficient testing precision of a chemical method is solved, and the liquid specific gravity testing device is simple and ingenious in structure, easy to produce and process and low in cost, and is beneficial to mass production, popularization and application.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. The liquid specific gravity testing device is characterized in that: comprises a test pool (1), a test seat (2), a light source (3) and a sensor (4); the test pool (1) is internally provided with a liquid sample test area (11) and a sample input channel (12), and the inner end of the sample input channel (12) is connected with the liquid sample test area (11); the lower end of the test pool (1) is provided with a glass prism (13), and the liquid sample test area (11) is positioned on the upper end face of the glass prism (13); the testing pool (1) is detachably arranged in the testing seat (2), the light source (3) and the sensor (4) are respectively arranged at the opposite sides of the periphery of the testing seat (2), and light emitted by the light source (3) during testing passes through the testing seat (2) and then is reflected to the sensor (4) through the end face of the upper end of the glass prism (13).

2. The liquid specific gravity test device according to claim 1, characterized in that: the outside of glass prism (13) is equipped with income plain noodles (15) and play plain noodles (16) respectively towards light source (3) and sensor (4), go into plain noodles (15) and play plain noodles (16) and be the plane that down inclines inwards from the top, and mutual symmetry sets up.

3. The liquid specific gravity test device according to claim 2, characterized in that: the bottom of glass prism (13) has bar recess (17), the both ends of recess (17) extend to the outside surface of glass prism (13), moreover recess (17) are located and go into between plain noodles (15) and play plain noodles (16), go into plain noodles (15) and go out plain noodles (16) and be symmetry each other along bar recess (17).

4. The liquid specific gravity test device according to claim 3, characterized in that: the section of the groove (17) is n-shaped.

5. The liquid specific gravity test device according to claim 2, 3 or 4, wherein: the light incident surface (15) and the light emergent surface (16) are respectively basically parallel to the light source (3) and the sensor (4).

6. The liquid specific gravity test device according to claim 1, 2, 3 or 4, wherein: the test seat (2) is provided with a test pool mounting cavity (21), the outer side face, provided with the light source (3) and the sensor (4), of the test seat (2) is respectively provided with a light inlet through hole (22) and a light outlet through hole (23) which are communicated with the test pool mounting cavity (21), and the test pool (1) is detachably mounted in the test pool mounting cavity (21); light emitted by the light source (3) during testing enters the testing pool installation cavity (21) through the light inlet through hole (22), then enters the glass prism (13), is reflected by the reflecting surface of the upper end face of the glass prism (13), and is emitted to the sensor (4) through the light outlet through hole (23).

7. The liquid specific gravity test device according to claim 6, characterized in that: test seat (2) include base (24) and fixed lid (25), the upper end of base (24) has test cell installation cavity (21), the peripheral opposite side of base (24) is equipped with light source (3) and sensor (4), and the lateral surface that base (24) were equipped with light source (3) and sensor (4) in addition has light inlet through hole (22) and light-emitting through hole (23) with test cell installation cavity (21) intercommunication respectively.

8. The liquid specific gravity test device according to claim 1, 2, 3, 4 or 7, wherein: the sample input channels (12) are more than two, and the inner ends of the sample input channels are connected with the liquid sample testing area (11) in an annular array distribution mode.

9. The liquid specific gravity test device according to claim 8, characterized in that: the sample input channel (12) is a pipeline, and one end of the sample input channel extends into the interior of the test seat (2) and is connected with the liquid sample test area (11).