Liquid drop detection device

Abstract

The liquid drop detection device comprises a shell, a first fixing groove and a second fixing groove are formed in the end faces of the two sides of the shell, the first fixing groove and the second fixing groove are symmetrically arranged along the central axis, an infrared laser module is arranged in the first fixing groove, an infrared receiving diode is arranged in the second fixing groove, and the infrared laser module is connected with the infrared receiving diode. The middle part of the shell is concave downwards to form a liquid receiving bin, an affinity column is arranged at the top of the shell, a liquid outlet is formed in the lower end of the affinity column, and the liquid outlet corresponds to the liquid receiving bin; the liquid drop detection accuracy and the liquid drop detection position range are increased through the two or more infrared receiving elements, and the liquid drop detection device is simple and compact in structure and can be conveniently placed in equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a liquid droplet detection device. Background Art

[0002] In some laboratory automation instruments, it is necessary to detect whether there are droplets flowing down, or to count droplets or measure speed. Existing solutions such as LED illumination and other detection technologies have defects such as poor reliability, being affected by visible light, and being incompatible with liquids of different colors. In view of the above problems, the utility model discloses a droplet detection device that realizes detection by interfering with light spots through infrared laser irradiation. Utility Model Content

[0003] The technical problem to be solved by the utility model is that in some laboratory automation instruments, it is necessary to detect whether there are droplets flowing down, or to realize droplet counting and speed measurement. Existing red schemes such as LED lighting and other detection technologies have the defects of poor reliability, being affected by visible light, and being incompatible with liquids of different colors.

[0004] In order to solve the above technical problems, the utility model provides a droplet detection device, including a shell, and the end faces of both sides of the shell are provided with a first fixed groove and a second fixed groove, the first fixed groove and the second fixed groove are symmetrically arranged along the central axis, an infrared laser module is arranged in the first fixed groove, and an infrared receiving diode is arranged in the second fixed groove. The middle part of the shell is concave to form a liquid receiving chamber, and an affinity column is arranged on the top of the shell, and a liquid outlet is arranged at the lower end of the affinity column, and the liquid outlet corresponds to the liquid receiving chamber; the shell, the first fixed groove, the second fixed groove, and the liquid receiving chamber are integrally formed by die casting.

[0005] Furthermore, a fixing device is provided on the same side of the shell body adjacent to the first fixing groove and the second fixing groove, and the fixing device includes a fixing block, and the fixing block is provided with a fixing hole, and the fixing hole passes through the end surface and the bottom surface of the fixing block.

[0006] Furthermore, the fixing device, the housing, the first fixing groove and the second fixing groove are integrally formed by die-casting.

[0007] Furthermore, the fixing block is trapezoidal or columnar.

[0008] Furthermore, a horizontal bar for fixing the infrared laser module is provided in the first fixing groove.

[0009] Furthermore, the first fixing groove is in an arc shape.

[0010] Furthermore, at least two infrared receiving diodes are provided on both sides of the second fixing groove, and the infrared receiving diodes correspond to the infrared laser module.

[0011] Furthermore, two sides of the end of the second fixing groove are at right angles.

[0012] Advantages of this utility model:

[0013] 1. The utility model increases the accuracy of droplet detection and the droplet detection position range through two or more infrared receiving elements.

[0014] 2. Use infrared laser beam to avoid interference from ambient light, while ensuring that small droplets can form an effective measurement spot, and there is no cross interference between continuous droplets;

[0015] 3. The utility model has a simple and compact structure and is convenient for integration into equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of a droplet detection device.

[0017] Figure 2 It is a front view of a droplet detection device.

[0018] Figure 3 It is a right side view of a droplet detection device.

[0019] Figure 4 It is a left view of a droplet detection device.

[0020] Figure 5 A top view of a droplet detection device.

[0021] Figure 6 A bottom view of a droplet detection device is shown.

[0022] As shown in the figure:

[0023] 1. Shell; 2. Liquid receiving chamber; 3. First fixing groove; 4. Second fixing groove; 5. Fixing device; 501. Fixing block; 502. Fixing hole; 6. Horizontal bar; 7. Infrared laser module; 8. Infrared receiving diode; 9. Affinity column; 10. Liquid outlet. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0025] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0027] Combined with Figure 1-6 As shown, in order to solve the above technical problems, the utility model provides a droplet detection device, including a shell 1, the end faces of both sides of the shell 1 are provided with a first fixed groove 3 and a second fixed groove 4, the first fixed groove 3 and the second fixed groove 4 are symmetrically arranged along the central axis, and the first fixed groove 3 is in an arc shape. An infrared laser module 7 is arranged in the first fixed groove 3, and an infrared receiving diode 8 is arranged in the second fixed groove 4. The middle part of the shell 1 is concave to form a liquid receiving bin 2, and an affinity column 9 is arranged on the top of the shell 1. A liquid outlet 10 is arranged at the lower end of the affinity column 9, and the liquid outlet 10 corresponds to the liquid receiving bin 2; the shell 1, the first fixed groove 3, the second fixed groove 4, and the liquid receiving bin 2 are integrally formed by die casting. The structure is simple and compact, and it is convenient to place in the equipment.

[0028] The light beam emitted by the infrared laser module 7 passes through the middle of the two infrared receiving diodes 8. At this time, the infrared receiving diodes 8 cannot detect infrared light. When the droplet flows out of the liquid outlet 10 and passes through the light beam emitted by the infrared laser module 7, the light beam is refracted by the droplet and scattered. At this time, the infrared receiving diodes 8 on both sides will detect the infrared light, thereby realizing the droplet detection function. Using two infrared receiving diodes 7 can increase the tolerance of the droplet position deviation range and increase the detection accuracy.

[0029] The infrared receiving diode 7 is connected to an external counting device for counting.

[0030] A fixing device 5 is provided on the same side of the housing 1 adjacent to the first fixing groove 3 and the second fixing groove 4 . The fixing device 5 includes a fixing block 501 . A fixing hole 502 is provided on the fixing block 501 . The fixing hole 502 passes through the end surface and the bottom surface of the fixing block 501 .

[0031] The liquid droplet detection device can be fixed by the fixing device 5 .

[0032] The fixing device 5, the housing 1, the first fixing groove 3 and the second fixing groove 4 are integrally formed by die casting, thereby increasing the stability of the device, making the structure simple and compact, and conveniently placing it in the device.

[0033] The fixing block is in a trapezoidal or cylindrical shape. According to different environments and needs, the fixing block can be in a trapezoidal or cylindrical shape to increase practicality.

[0034] A horizontal bar 6 for fixing the infrared laser module 7 is arranged in the first fixing groove 3. The infrared laser module 7 is fixed by the horizontal bar 6, which has a simple structure and is easy to install and replace.

[0035] At least two infrared receiving diodes 8 are provided on both sides of the second fixing groove 4, and the infrared receiving diodes 8 correspond to the infrared laser module 7. Using two infrared receiving diodes 7 can increase the tolerance of the droplet position deviation range and increase the detection accuracy.

[0036] The ends of the second fixing groove 4 are at right angles on both sides, which facilitates symmetrical fixing of the infrared receiving diode 8 and facilitates installation and calibration.

[0037] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0038] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A droplet detection device, characterized in that: The invention comprises a shell (1), wherein the end surfaces of both sides of the shell (1) are provided with a first fixing groove (3) and a second fixing groove (4), wherein the first fixing groove (3) and the second fixing groove (4) are symmetrically arranged along the central axis, wherein an infrared laser module (7) is arranged in the first fixing groove (3), and an infrared receiving diode (8) is arranged in the second fixing groove (4), wherein the middle part of the shell (1) is concave to form a liquid receiving chamber (2), wherein an affinity column (9) is arranged at the top of the shell (1), and a liquid outlet (10) is arranged at the lower end of the affinity column (9), and wherein the liquid outlet (10) corresponds to the liquid receiving chamber (2); The housing (1), the first fixing groove (3), the second fixing groove (4) and the liquid receiving bin (2) are integrally formed by die casting.

2. A droplet detection device according to claim 1, characterized in that: A fixing device (5) is provided on the same side of the housing (1) adjacent to the first fixing groove (3) and the second fixing groove (4), and the fixing device (5) comprises a fixing block (501), and the fixing block (501) is provided with a fixing hole (502), and the fixing hole (502) passes through the end surface and the bottom surface of the fixing block (501).

3. A droplet detection device according to claim 2, characterized in that: The fixing device (5), the housing (1), the first fixing groove (3) and the second fixing groove (4) are integrally formed by die casting.

4. A droplet detection device according to claim 2, characterized in that: The fixing block is in a trapezoidal or cylindrical shape.

5. A droplet detection device according to claim 1, characterized in that: A horizontal bar (6) for fixing the infrared laser module (7) is provided in the first fixing groove (3).

6. A droplet detection device according to any one of claims 1, 2 or 5, characterized in that: The first fixing groove (3) is in an arc shape.

7. A droplet detection device according to claim 1, characterized in that: At least two infrared receiving diodes (8) are provided on both sides of the second fixing groove (4), and the infrared receiving diodes (8) correspond to the infrared laser module (7).

8. A droplet detection device according to claim 1, 2 or 7, characterized in that: Both sides of the end of the second fixing groove (4) are at right angles.

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