Non-contact liquid level sensor easy to install

Abstract

The non-contact liquid level sensor easy to install comprises an installation frame and a sensor body, two hydraulic telescopic cylinders at the same height are arranged on the installation frame, two parallel clamping plates are symmetrically arranged on the two sides of the sensor body, and the ends of the hydraulic telescopic cylinders are connected with the two clamping plates through strong magnetic force. The bottom of the sensor housing close to the middle is provided with a wire, the top of the sensor housing is provided with a heat dissipation assembly, and the top center of the mounting rack is provided with a heat dissipation fan. According to the utility model, the end part of the telescopic rod of the hydraulic telescopic cylinder is in strong magnetic connection with the clamping plate, so that the sensor is in strong magnetic connection with the mounting frame, and the sensor can be quickly mounted and dismounted without the help of an external tool; the hydraulic telescopic cylinder is electrically connected with the control panel, the height of the sensor is adjusted through the control panel so that the sensor can detect the highest liquid level or the lowest liquid level, and therefore the efficiency of mounting and dismounting the sensor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level sensors, in particular to a non-contact liquid level sensor that is easy to install. Background Art

[0002] A non-contact liquid level sensor is a sensor that calculates the distance between the sensor and the object being measured by the time it takes to transmit and receive signals. Since the propagation speed in the air is constant and the distance between the liquid level sensor and the bottom of the container is constant, the liquid level of the object being measured can be known. It can be directly installed outside the wall of a water tank or water pipe without direct contact with the liquid. There are three main types of non-contact liquid level sensors: separate photoelectric liquid level sensors, capacitive liquid level sensors, and ultrasonic liquid level sensors. Among them, the capacitive liquid level sensor can detect the liquid level by sticking it on the container. It has a simple installation process and is mostly used in the field of home appliances.

[0003] The existing non-contact liquid level sensor is fixed to the water tank by gluing or fixing it by screws or bolts. The gluing method may fall off after a long time of use, affecting the normal measurement work. The screws or bolts require a screwdriver or other tools to install and remove the screws at multiple locations during installation or removal, which is quite troublesome. In addition, when the traditional non-contact liquid level sensor is used for a long time, the internal electronic components will generate a certain amount of heat, which is easy to cause heat collection inside the sensor, causing malfunctions and reducing the life of the sensor. Utility Model Content

[0004] The purpose of the utility model is to provide a non-contact liquid level sensor that is easy to install, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides a simple-to-install non-contact liquid level sensor, including a mounting frame and a sensor mounted on the mounting frame, the mounting frame is provided with two hydraulic telescopic cylinders of the same height, two parallel clamping plates are symmetrically provided on both sides of the sensor, the ends of the hydraulic telescopic cylinders are connected to the gap between the two clamping plates, a wiring is provided near the middle of the bottom of the sensor housing, a heat dissipation component is provided on the top of the sensor housing, and a heat dissipation fan for accelerating the heat dissipation of the sensor is installed at the top center of the mounting frame.

[0006] As a further improvement of the technical solution, the mounting frame includes two longitudinal plates and one transverse plate, the tops of the two longitudinal plates are sleeved on the transverse plate, and the two longitudinal plates and the transverse plate are spread out in an open shape.

[0007] As a further improvement of the present technical solution, the hydraulic telescopic cylinder includes a cylinder body and a telescopic rod. The cylinder body is fixedly connected to the inner side surface of the longitudinal plate and is installed directly below the transverse plate. The cylinder body is installed directly above the gap between the two clamping plates. One end of the telescopic rod is connected to the cylinder body and the other end is connected to the supporting bottom plate. The supporting bottom plate has two and is rotatably connected to both sides of the end of the telescopic rod. The rod portion of the telescopic rod located between the cylinder body and the end is sleeved with a supporting top plate.

[0008] As a further improvement of the technical solution, the bottom of the supporting top plate and the top of the supporting bottom plate are connected with a layer of strong magnet sheet, and the top and bottom of the splint are provided with a layer of metal sheet matching the size of the strong magnet sheet, and the metal sheet is strongly adsorbed to the strong magnet sheet.

[0009] As a further improvement of the present technical solution, the bottom of the supporting top plate and the top of the supporting bottom plate are both connected with strong magnet grooves, and the top and bottom of the clamping plate are both provided with metal protrusions matching the size of the strong magnet grooves, and the metal protrusions are strongly adsorbed to the strong magnet grooves.

[0010] As a further improvement of the present technical solution, the heat dissipation assembly includes a heat sink, which is fixedly mounted on the upper end of the sensor housing, and a heat sink is fixedly mounted on the upper end of the heat sink, and ventilation holes are provided on the inner side of the heat sink, and a heat conductive block is fixedly mounted on the lower end of the heat sink, and the lower end of the heat conductive block extends into the inner side of the sensor housing, and a heat conductive groove is provided on the side of the heat conductive block away from the heat sink.

[0011] As a further improvement of the technical solution, a mounting groove is provided at the upper end of the sensor housing, and the heat sink is fixedly mounted on the inner side of the mounting groove by screws.

[0012] As a further improvement of the technical solution, the wiring includes a sensing line, one end of the sensing line is provided with a connector, and the upper end of the connector is provided with a signal line, a negative power line, and a positive power line.

[0013] As a further improvement of the technical solution, it also includes a non-metallic container for detected liquid level, which is arranged in front of the sensor, and the front side of the non-metallic container is in contact with the sensor housing, a control panel electrically connected to the cylinder body is installed on one side of the non-metallic container, a connector slot is opened on one side of the control panel, and the connector slot is plugged into the connector, and a sensor indicator light is provided on the control panel, the negative pole of the sensor indicator light is located in the connector slot and connected to the signal line, and the positive pole of the sensor indicator light is located in the connector slot and connected to the positive power line.

[0014] As a further improvement of the technical solution, the sensor is a capacitive non-contact liquid level sensor

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model symmetrically designs two parallel clamping plates on both sides of the sensor housing, the top and bottom of the clamping plates are designed to be metal that can be attracted by magnets, and a hydraulic telescopic cylinder is designed on the inner side of the longitudinal plate of the mounting frame, and the rod and end of the hydraulic telescopic cylinder are respectively designed with a supporting top plate and two supporting bottom plates, the bottom of the supporting top plate and the top of the supporting bottom plate are magnetic, when the telescopic rod of the hydraulic telescopic cylinder is extended into the gap between the corresponding two clamping plates, the two supporting bottom plates at the end are unfolded and connected to the bottom of the two clamping plates by strong magnetic force, and the supporting top plate sleeved on the rod is connected to the top of the two clamping plates by strong magnetic force, so that the telescopic rods of the two hydraulic telescopic cylinders are away from one side of the cylinder body. It is formed into an I-shape and connected to the two sides of the sensor respectively, and then such a capacitive sensor is strongly magnetically connected to the mounting frame, making the installation and removal of the sensor relatively simple and easy. No external tools are required, and the sensor can be quickly installed and removed. At the same time, the sensor is ensured to be insulated from the liquid for measuring the liquid level, thereby improving the safety and convenience of use. In addition, since the connector of the sensor is plugged into the connector slot of the control panel, the hydraulic telescopic rod is electrically connected to the control panel, and the hydraulic telescopic rod can be controlled by the control panel to adjust the installation height of the sensor to achieve the highest or lowest adjustment of the sensor detection liquid level, thereby improving the efficiency of installing and removing the sensor.

[0017] The non-contact liquid level sensor of the utility model is suitable for various occasions requiring liquid level monitoring, and is particularly suitable for the chemical, pharmaceutical, food and beverage industries, where the hygiene or corrosiveness of the liquid requires that the sensor cannot directly contact the liquid. Its simple installation feature enables users of any technical level to quickly deploy and use the sensor, thereby simplifying the installation process and reducing maintenance costs.

[0018] (2) The utility model designs a heat conducting block, a heat conducting groove, a heat sink and heat sink fins on the sensor housing. The heat conducting groove at the lower end of the heat conducting block can expand the heat absorption surface to quickly absorb the heat generated by the internal components of the sensor housing. After the heat is accumulated on the heat conducting block, the heat conducting block conducts the heat to the heat sink. The heat sink expands the heat dissipation surface through the external heat sink fins to dissipate the heat. At the same time, the ventilation holes on the heat sink fins can improve the ventilation and heat dissipation effects of the heat sink fins. At the same time, a heat sink fan is installed on the horizontal plate, and the heat retained in the ventilation holes is taken away by the heat sink fan, thereby accelerating the heat generated by the internal components of the sensor housing to be transported outward, thereby ensuring that the problem of heat collection inside the sensor housing causing electronic component failure is not likely to occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a three-dimensional diagram of the sensor of the present utility model.

[0021] Figure 2 It is a side view of the sensor housing of the present utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the heat dissipation component of the sensor of the present utility model.

[0023] Figure 4 It is a three-dimensional diagram of the mounting frame of the utility model.

[0024] Figure 5 This is a connection diagram of the sensor and the mounting bracket of Example 1 of the utility model.

[0025] Figure 6 This is a three-dimensional diagram of a mounting bracket with a sensor installed according to Example 1 of the utility model.

[0026] Figure 7 for Figure 6 Enlarged view of point A in the middle.

[0027] Figure 8 This is a stereoscopic view of a mounting bracket with a sensor installed according to Example 2 of the present utility model.

[0028] Fig. 9 for Figure 8 Enlarged view of point B in the middle.

[0029] Fig.10 This is a connection diagram of the sensor, non-metallic container and control panel in Example 1 of the utility model.

[0030] The accompanying drawings are marked as follows: mounting frame 1, longitudinal plate 101, transverse plate 102, sensor 2, hydraulic telescopic cylinder 3, cylinder body 301, telescopic rod 302, splint 4, wiring 5, sensor line 501, connector 502, signal line 503, negative power line 504, positive power line 505, heat dissipation component 6, heat conduction groove 601, heat conduction block 602, heat dissipation plate 603, heat dissipation fin 604, heat dissipation fan 7, support bottom plate 8, support top plate 9, strong magnet sheet 10, metal sheet 11, strong magnet groove 12, metal protrusion 13, mounting groove 14, non-metal container 15, control panel 16, connector groove 17, sensor indicator light 18. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the embodiments of the present invention, it should be understood that if there are directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, inside, outside, etc., the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, if there are terms such as "installed", "connected", "connected", "fixed", etc., they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected 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 embodiments of the present invention can be understood according to the specific circumstances.

[0035] Example 1

[0036] like Figure 1-7 As shown, an embodiment of the utility model provides a non-contact liquid level sensor that is easy to install, including a mounting frame 1 and a sensor 2 mounted on the mounting frame 1, two hydraulic telescopic cylinders 3 of the same height are arranged on the mounting frame 1, two parallel clamping plates 4 are symmetrically arranged on both sides of the sensor 2, the ends of the hydraulic telescopic cylinders 3 are connected with the gap between the two clamping plates 4, a wiring 5 is arranged near the middle of the bottom of the sensor 2 housing, a heat dissipation component 6 is arranged on the top of the sensor 2 housing, and a heat dissipation fan 7 is installed at the top center of the mounting frame 1 to accelerate the heat dissipation of the heat dissipation component 6 to the outside.

[0037] like Figure 4As shown, the mounting frame 1 includes two longitudinal plates 101 and a transverse plate 102. The tops of the two longitudinal plates 101 are sleeved on the transverse plate 102, and the two longitudinal plates 101 and the transverse plate 102 are unfolded in an open shape to adjust the distance between the two hydraulic telescopic cylinders 3, thereby meeting the use of sensors 2 of different widths.

[0038] like Figure 5-7 As shown, the hydraulic telescopic cylinder 3 includes a cylinder body 301 and a telescopic rod 302. The cylinder body 301 is fixedly connected to the inner side of the longitudinal plate 101, and the cylinder body 301 is installed directly below the transverse plate 102. The cylinder body 301 is installed directly above the gap between the two clamps 4. One end of the telescopic rod 302 is connected to the cylinder body 301, and the other end is connected to the supporting bottom plate 8. The supporting bottom plate 8 has two and is rotatably connected to both sides of the end of the telescopic rod 302. The rod portion of the telescopic rod 302 located between the cylinder body 301 and the end is sleeved with a supporting top plate 9. The bottom of the supporting top plate 9 and the top of the supporting bottom plate 8 are both connected with a layer of strong magnet sheet 10. The top and bottom of the clamp 4 are both provided with a layer of metal sheet 11 that is matched in size with the strong magnet sheet 10, and the metal sheet 11 is strongly adsorbed to the strong magnet sheet 10. When the telescopic rod 302 of the hydraulic telescopic cylinder 3 extends into the gap between the corresponding two clamps 4, the two supporting bottom plates 8 at the end are unfolded and connected to the bottom of the two clamps 4 with strong magnetic force, and the supporting top plate 9 sleeved on the rod is connected to the top of the two clamps 4 with strong magnetic force, so that the telescopic rods 302 of the two hydraulic telescopic cylinders 3 form an I-shape on the side away from the cylinder body 301 and are respectively connected to the two side surfaces of the sensor 2.

[0039] like Figure 3 As shown, the heat dissipation component 6 includes a heat dissipation plate 603, which is fixedly mounted on the upper end of the housing of the sensor 2, and a heat dissipation fin 604 is fixedly mounted on the upper end of the heat dissipation plate 603, and a ventilation hole 605 is provided on the inner side of the heat dissipation fin 604, and a heat conduction block 602 is fixedly mounted on the lower end of the heat dissipation plate 603, and the lower end of the heat conduction block 602 extends into the inner side of the housing of the sensor 2, and a heat conduction groove 601 is provided on the side of the heat conduction block 602 away from the heat dissipation plate 603, and the heat conduction groove 601 at the lower end of the heat conduction block 602 can expand the heat absorption surface to quickly absorb the heat generated by the internal components of the sensor 2, and the heat After being gathered on the heat-conducting block 602, the heat-conducting block 602 conducts the heat to the heat sink 603, and the heat sink 603 expands the heat dissipation surface through the external heat sink fins 604 to dissipate the heat. At the same time, the ventilation holes 605 on the heat sink fins 604 can improve the ventilation effect of the heat sink fins 604 and the heat dissipation efficiency, thereby ensuring that the problem of heat collection causing electronic component failure is not likely to occur inside the housing of the sensor 2; the heat sink fins 604 and the heat sink 603 can use aluminum materials with excellent heat dissipation, and the heat-conducting block 602 with the heat-conducting grooves 601 can use copper materials with high thermal conductivity efficiency.

[0040] like Figure 1 and Figure 2 As shown, a mounting groove 14 is provided at the upper end of the housing of the sensor 2, and the heat sink 603 is fixedly installed inside the mounting groove 14 by screws. By providing the mounting groove 14 on the sensor 2, the heat sink 603 can be easily installed.

[0041] like Figure 1 As shown, the wiring 5 includes a sensing line 501 , one end of which is provided with a connector 502 , and the upper end of the connector 502 is provided with a signal line 503 , a negative power line 504 , and a positive power line 505 .

[0042] like Fig.10 As shown, it also includes a non-metallic container 15, which is arranged in front of the sensor 2, and the front side of the non-metallic container 15 is in contact with the outer shell of the sensor 2. A control panel 16 electrically connected to the cylinder body 301 is installed on one side of the non-metallic container 15, and a connector slot 17 is provided on one side of the control panel 16. The connector slot 17 is plugged into the connector 502. A sensor indicator light 18 is provided on the control panel 16, and the negative pole of the sensor indicator light 18 is located in the connector slot 17 and is connected to the signal line 503, and the positive pole of the sensor indicator light 18 is located in the connector slot 17 and is connected to the positive power line 505.

[0043] like Figure 1 and Figure 2 As shown, the sensor 2 is a capacitive non-contact liquid level sensor, which can detect the liquid level of the conductive liquid in the non-metallic container.

[0044] The working principle of a non-contact liquid level sensor that is easy to install provided in the embodiment of the present application is as follows:

[0045] like Fig.10 As shown, when the sensor 2 is fixed, the two longitudinal plates 101 of the mounting frame 1 are pulled along the left and right sides of the transverse plate 102 so that the distance between the two longitudinal plates 101 is just enough to accommodate the sensor 2. Then the sensor 2 is placed between the two longitudinal plates 101 and moved vertically from bottom to top. At this time, the end of the telescopic rod 302 of the hydraulic telescopic cylinder 3 on the inner side of the fixed longitudinal plate 101 is extended between the clamps 4 on both sides of the sensor 2 through the control panel 16. Then the end support bottom plate 8 is unfolded and magnetically connected to the bottom of the clamp 4, and the rod support top plate 9 is magnetically connected to the top of the clamp 4, so that the two sides of the sensor 2 are respectively connected to the telescopic rod 302 of the hydraulic telescopic cylinder 3, so that the hydraulic telescopic cylinder 3 is controlled by the control panel 16 to adjust the height of the sensor 2, so as to realize the adjustment of the highest or lowest liquid level detected by the sensor 2. At this time, the side of the sensor 2 close to the sensor body is attached to the side surface of the non-metallic container 15, and the connector 502 of the sensor 2 is plugged into the connector slot 17 of the control panel 16, so that the sensor indicator light 18 is used to display whether the highest or lowest liquid level is reached to prompt the staff.

[0046] Example 2

[0047] like Figure 8 and Fig. 9 As shown, an embodiment of the utility model provides a non-contact liquid level sensor that is easy to install. The bottom of the support top plate 9 and the top of the support bottom plate 8 are both connected with a strong magnet groove 12, and the top and bottom of the splint 4 are both provided with metal protrusions 13 that are matched in size with the strong magnet groove 12. The metal protrusions 13 are strongly adsorbed to the strong magnet groove 12, and the protrusions and the grooves are matched to strengthen the connection between the bottom of the support top plate 9 and the top of the splint 4, and the top of the support bottom plate 8 and the bottom of the splint 4.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-contact liquid level sensor that is easy to install, comprising a mounting frame (1) and a sensor (2) mounted on the mounting frame (1), characterized in that: The mounting frame (1) is provided with two hydraulic telescopic cylinders (3) of the same height, two parallel clamping plates (4) are symmetrically provided on both sides of the sensor (2), the ends of the hydraulic telescopic cylinders (3) are connected to the gap between the two clamping plates (4), a wiring (5) is provided near the middle of the bottom of the sensor (2), a heat dissipation component (6) is provided on the top of the housing of the sensor (2), and a heat dissipation fan (7) for accelerating the heat dissipation of the sensor (2) is installed at the top center of the mounting frame (1).

2. The non-contact liquid level sensor according to claim 1, characterized in that: The mounting frame (1) comprises two longitudinal plates (101) and a transverse plate (102), the tops of the two longitudinal plates (101) are sleeved on the transverse plate (102), and the two longitudinal plates (101) and the transverse plate (102) are spread out in an open shape.

3. The non-contact liquid level sensor according to claim 2, characterized in that: The hydraulic telescopic cylinder (3) comprises a cylinder body (301) and a telescopic rod (302); the cylinder body (301) is fixedly connected to the inner side surface of the longitudinal plate (101), and the cylinder body (301) is installed directly below the transverse plate (102); the cylinder body (301) is installed directly above the gap between the two clamping plates (4); one end of the telescopic rod (302) is connected to the cylinder body (301), and the other end is connected to the supporting bottom plate (8); the supporting bottom plate (8) has two ends, which are rotatably connected to both sides of the end of the telescopic rod (302); the rod portion of the telescopic rod (302) located between the cylinder body (301) and the end is sleeved with a supporting top plate (9).

4. The non-contact liquid level sensor according to claim 3, characterized in that: The bottom of the supporting top plate (9) and the top of the supporting bottom plate (8) are both connected with a layer of strong magnet sheet (10), and the top and bottom of the clamping plate (4) are both provided with a layer of metal sheet (11) whose size matches that of the strong magnet sheet (10), and the metal sheet (11) is strongly adsorbed to the strong magnet sheet (10).

5. The non-contact liquid level sensor that is easy to install according to claim 3, characterized in that: The bottom of the supporting top plate (9) and the top of the supporting bottom plate (8) are both connected with a strong magnet groove (12), and the top and bottom of the clamping plate (4) are both provided with a metal protrusion (13) of a size matching the strong magnet groove (12), and the metal protrusion (13) is strongly adsorbed with the strong magnet groove (12).

6. The non-contact liquid level sensor that is easy to install according to claim 1, characterized in that: The heat dissipation component (6) comprises a heat dissipation plate (603), the heat dissipation plate (603) being fixedly mounted on the upper end of the housing of the sensor (2), a heat dissipation fin (604) being fixedly mounted on the upper end of the heat dissipation plate (603), a ventilation hole being provided on the inner side of the heat dissipation fin (604), a heat conduction block (602) being fixedly mounted on the lower end of the heat dissipation plate (603), the lower end of the heat conduction block (602) extending into the inner side of the housing of the sensor (2), and a heat conduction groove (601) being provided on a side of the heat conduction block (602) away from the heat dissipation plate (603).

7. The non-contact liquid level sensor according to claim 6, characterized in that: The upper end of the housing of the sensor (2) is provided with a mounting groove (14), and the heat sink (603) is fixedly mounted on the inner side of the mounting groove (14) by means of screws.

8. The non-contact liquid level sensor that is easy to install according to claim 1, characterized in that: The wiring (5) comprises a sensing line (501), one end of the sensing line (501) is provided with a connector (502), and the upper end of the connector (502) is provided with a signal line (503), a negative power line (504), and a positive power line (505).

9. The non-contact liquid level sensor according to claim 8, characterized in that: The invention also comprises a non-metallic container (15) for detecting the liquid level, wherein the non-metallic container (15) is arranged in front of the sensor (2), and the front side of the non-metallic container (15) is in contact with the housing of the sensor (2); a control panel (16) electrically connected to the cylinder body (301) is installed on one side of the non-metallic container (15); a connector slot (17) is provided on one side of the control panel (16), and the connector slot (17) is plugged into the connector (502); a sensor indicator light (18) is provided on the control panel (16); the negative pole of the sensor indicator light (18) is located in the connector slot (17) and is connected to the signal line (503); and the positive pole of the sensor indicator light (18) is located in the connector slot (17) and is connected to the positive power line (505).

10. The non-contact liquid level sensor that is easy to install according to claim 1, characterized in that: The sensor (2) is a capacitive non-contact liquid level sensor.

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