A liquid level detector

Abstract

The present application relates to the field of liquid level detection device, especially to a kind of liquid level detector, its structure includes: float includes movable plate, movable plate's both sides are equipped with side plate, side plate extends inwardly and is equipped with first sliding rod and second sliding rod, side plate is matched with the side edge sliding slot of positioning rod by first sliding rod and second sliding rod, the electric signal generated by the light source of this device is handled by the laser emission of probe and receiving reflected light, first sliding rod and second sliding rod of float are embedded to side edge sliding slot, the diameter of first sliding rod is less than the diameter of second sliding rod to avoid jam in side edge sliding slot, and first sliding rod and second sliding rod adopt cylindrical structure, can improve the smoothness of up and down displacement, plate body and movable shaft rotation connection can avoid the precision reduction caused by the excessive gap of plate body shaking too much, while the detection platform of protruding is set on the top of plate body for the emission surface of laser point, and drainage hole is set around detection platform.

Description

TECHNICAL FIELD

[0001] The application is a liquid level detector, belonging to the field of liquid level detection devices. BACKGROUND

[0002] In view of the high safety risk of flammable liquids, non-contact liquid level detection technology is widely adopted to safely and effectively monitor the volume changes of these liquids in containers.

[0003] However, due to the different densities of various flammable liquids, the reflection principle commonly relied on by non-contact sensors often introduces large errors when measuring the liquid level. Although the measurement accuracy can be tried to be optimized by adjusting the sensor parameters, this process is not only complex and tedious, but also may sacrifice the convenience of use and increase the difficulty of data processing. SUMMARY

[0004] In view of the deficiencies of the prior art, the application aims to provide a liquid level detector to solve the above problems.

[0005] In order to achieve the above-mentioned purpose, the application is realized by the following technical scheme: a liquid level detector, the structure of which comprises a detector, the bottom of the detector is provided with a positioning rod, the surface of the positioning rod is provided with a slidable floater, the floater comprises a movable plate, the two sides of the movable plate are provided with side plates, the side plates are inwardly extended and provided with first and second sliding rods, the side plates are matched with the side edges of the positioning rod through the first and second sliding rods, the movable plate is movably connected with the side plates, and the diameter of the second sliding rod is smaller than that of the first sliding rod.

[0006] The detector comprises a traction block that slides up and down inside the positioning rod, the traction block is provided with an electromagnetic mechanism composed of an iron core and a coil, and the traction block moves up and down to pull the first and second sliding rods of the floater through magnetic force.

[0007] As a preferred, the detector further comprises a display and a mainboard, the display is installed on the surface of the mainboard, the mainboard is internally provided with a power supply battery, the display is wrapped with a shell outside, the bottom of the shell is provided with a mounting groove, and the shell is nested and connected with the positioning rod through the mounting groove, the bottom of the shell is further provided with a probe, the detector is opposite to the surface of the floater, the surface of the shell is provided with a winder, and the traction block moves up and down through the driving of the wires inside the winder.

[0008] As a preferred, the rod body surface of the positioning rod is inwardly recessed to form a side edge sliding groove, and the middle part of the rod body is provided with an inner groove.

[0009] As a preferred, the connecting part of the side plate and the movable plate is provided with a limiting groove.

[0010] As preferred, the movable plate comprises a plate body, a movable shaft is installed at the movable position of the plate body, the movable shaft has a gap with a movable shaft inner groove, the movable shaft is engaged with the thread of the groove body of the limiting groove through the thread on both sides, and the upper surface of the plate body is provided with a convex detection table.

[0011] As preferred, the winding device comprises a wire slot for accommodating the wire, the wire slot is provided with a wrapped protective shell outside, the protective shell is provided with a winding motor on one side for driving the wire slot to reverse, the wire is provided with a metal wire inside, and the metal wire of the wire is connected with the internal circuit of the mainboard through the sliding contact connected through the wire slot.

[0012] As preferred, the surface edge of the detection table is provided with a drain hole penetrating through the detection table and the plate body, the bottom of the plate body is provided with a bottom groove and a backflow hole, the backflow hole is opposite to the position of the detection table, the edge of the detection table is provided with an inclined surface, and the inclined surface is provided with a flow guide groove with a narrow upper end.

[0013] As preferred, the wire is provided with a metal wire inside and an insulating sleeve outside.

[0014] As preferred, the traction block comprises a limiting block fixedly bonded with the outer skin of the wire, the limiting block is connected with a sealed shell, the bottom of the sealed shell is nested with an iron core, the iron core and the coil form an electromagnetic structure, the coil is electrically connected with the metal wire inside the wire, and the bottom of the sealed shell is further provided with a counterweight.

[0015] As preferred, the sealed shell is made of plastic material, the inside of the sealed shell is provided with a rectangular recess matched with the iron core, and the outer surface of the sealed shell is provided with a plane opposite to the iron core.

[0016] The liquid level detector has the following effects: the device emits laser through the probe and processes the electrical signal generated by the reflected light source, the first slide rod and the second slide rod of the float are embedded in the opposite side grooves, the diameter of the first slide rod is smaller than that of the second slide rod to avoid being stuck in the side grooves, the first slide rod and the second slide rod adopt a cylindrical structure, the smoothness of the up-down displacement is improved, the plate body and the movable shaft are rotationally connected to avoid the reduction of precision caused by the excessive shaking of the plate body due to the excessive gap, the detection table is provided on the top of the plate body as the emitting surface of the laser point, and the drain hole is provided around the detection table to avoid the interference caused by the liquid on the surface.

[0017] And the first sliding rod and the second sliding rod of the movable plate are magnetically attracted by the cooperation of the winding device and the traction block, the floating device is driven to move up and down, the movable plate is turned over, liquid can be completely separated from the movable plate under the action of gravitational potential energy, and the liquid level detector is more convenient to maintain without disassembly. The up and down movement of the traction block by the wire of the winding device can clean the inside of the side sliding groove opposite to the first sliding rod and the second sliding rod, the liquid level detector is more sensitive during detection, and part of the liquid is avoided from forming dirt and remaining in the inside of the side sliding groove after drying, thereby affecting detection. BRIEF DESCRIPTION OF DRAWINGS

[0018] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, read in conjunction with the accompanying drawings:

[0019] Figure 1 It is a structural schematic view of a liquid level detector.

[0020] Figure 2 It is a sectional structural schematic view of a detector.

[0021] Figure 3 It is an explosion structural schematic view of a floating device.

[0022] Figure 4 It is a structural schematic view of a movable plate.

[0023] Figure 5 It is a bottom structural schematic view.

[0024] Figure 6 It is a structural schematic view of the movable plate turned over downward.

[0025] Figure 7 It is a structural schematic view of a winding device.

[0026] Figure 8 It is a structural schematic view of a winding device. Figure 1 It is an enlarged schematic view of a structure.

[0027] In the figure:

[0028] 1, detector; 2, floating device; 3, positioning rod;

[0029] 11, display; 12, mainboard; 13, battery; 14, shell; 15, probe; 16, mounting groove; 17, winding device; 18, traction block;

[0030] 21, movable plate; 22, side plate; 23, limiting groove; 24, first sliding rod; 25, second sliding rod;

[0031] 31, rod body; 32, side sliding groove; 33, inner groove;

[0032] 171, winding motor; 172, wire slot; 173, wire; 174, protective shell; 175, sliding contact;

[0033] 181, limiting block; 182, sealing shell; 183, iron core; 184, coil; 185, counterweight;

[0034] 211, plate body; 212, movable shaft; 213, detection table; 214, drainage hole; 215, flow guide groove; 216, bottom groove; 217, backflow hole. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] In the description of the present application, the terms "first", "second" are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0037] At present, due to the different densities of various flammable liquids, the reflection principle commonly relied on by non-contact sensors often introduces large errors when measuring the liquid level. Although the measurement accuracy can be tried to be optimized by adjusting the sensor parameters, this process is not only complex and tedious, but also may sacrifice the convenience of use, increase the difficulty of data processing, therefore, in order to solve the above problems, the technical scheme as follows is proposed:

[0038] Please refer to Figures 1 to 8The application provides a liquid level detector technical scheme, which comprises a detector 1, a positioning rod 3 is arranged at the bottom of the detector 1, a slidable floater 2 is arranged on the surface of the positioning rod 3, the floater 2 comprises a movable plate 21, side plates 22 are arranged on the two sides of the movable plate 21, first sliding rods 24 and second sliding rods 25 are arranged on the side plates 22 inwards, the side plates 22 are matched with the side edges of the positioning rod 3 through the first sliding rods 24 and the second sliding rods 25, the movable plate 21 is movably connected with the side plates 22, and the diameter of the second sliding rods 25 is smaller than that of the first sliding rods 24.

[0039] The detector 1 comprises a traction block 18 which slides up and down in the positioning rod 3, an electromagnetic mechanism formed by a combination of an iron core 183 and a coil 184 is arranged on the traction block 18, and the traction block 18 moves up and down to pull the first sliding rods 24 and the second sliding rods 25 of the floater 2 through magnetic force.

[0040] In use, the main structure of the device comprises the detector 1 which is used for detection, and the floater 2 which is used for cooperating with the detector 1 to work, so that the floater can stably work in the process of use, the floater 2 is nested on the surface of the positioning rod 3, the stability of the whole is improved through the guidance of the positioning rod 3, and the floater 2 is prevented from moving everywhere in the liquid.

[0041] The detector 1 comprises a display 11, a mainboard 12 and a battery 13, the display 11 is used for displaying main parameters, the mainboard 12 is internally provided with a data processing chip and a communication module, for example, a 5g communication module, remote communication and timely transmission of real-time liquid level can improve the monitoring strength, the battery 13 is used for power supply of the equipment, the use life of the battery 13 can be prolonged in a low-power-consumption data transmission mode, and the trouble of frequent charging is avoided.

[0042] The mainboard 12 is arranged in a shell 14, the mainboard 12 is sealed by adopting a flame-retardant material, a probe 15 and a mounting groove 16 are arranged at the bottom of the shell 14, the probe 15 adopts a laser sensor, the mounting groove 16 is used for being connected with a rod body 31 of the positioning rod 3, side edge sliding grooves 32 are arranged on the two sides of the rod body 31 and are used for limiting the movement of the floater 2, so that laser reflection failure caused by deviation of the floater 2 is avoided, an inner groove 33 is arranged in the rod body 31, the floater 2 can be conveniently clamped through the inner groove 33, the length of the whole is prolonged, and the detection stroke of the floater 2 is larger.

[0043] The floater 2 comprises the movable plate 21, the side plates 22 are arranged on the two sides of the movable plate 21, limit grooves 23 are arranged on the movable ends of the side plates 22, and the movable plate 21 is clamped through the limit grooves 23 when the movable plate 21 and the side plates 22 are moved, so that excessive overturning of the movable plate 21 is avoided.

[0044] The limiting groove 23 extends inwardly with a first sliding rod 24 and a second sliding rod 25, wherein the diameter of the first sliding rod 24 is smaller than that of the second sliding rod 25, and the two are engaged in the interior of the side edge sliding groove 32 and are in sliding connection with the side edge sliding groove 32.

[0045] The first sliding rod 24 can avoid the clamping caused by the deviation of the side plate 22, and can assist the float 2 to be more stable when sliding. In the process of use, the surface of the movable plate 21 may have liquid, which can interfere with the use of the probe 15. To this end, the device optimizes the plate body 211. Specifically, the surface of the plate body 211 is provided with a convex detection table 213, the surface of the detection table 213 is provided with a drainage hole 214, the first sliding rod 24 penetrates the surface of the plate body 211, and the annular surface of the detection table 213 is provided with a flow guide groove 215. The flow guide groove 215 has a narrow upper part and a wide lower part, and the drainage efficiency is improved by the tension between the liquids.

[0046] The movable end of the plate body 211 is provided with a through hole, and the through hole has a movable shaft 212 which is in rotational cooperation with the through hole. The threads on both sides of the movable shaft 212 are fixedly connected with the hole of the side plate 22.

[0047] The bottom of the plate body 211 is provided with a backflow hole 217 and a bottom groove 216. The backflow hole 217 is arranged at the bottom of the detection table 213, which reduces the thickness of the plate body 211 and improves the speed during drainage.

[0048] The bottom groove 216 at the bottom of the plate body 211 can surround part of the liquid inside when the liquid floats, which can reduce the shaking of the liquid surface. Once the liquid surface shakes, the liquid remaining on the surface of the detection table 213 will be shaken to the non-detection area, which is more stable in use.

[0049] In order to avoid the problem that the movable plate 21 is blocked in the side edge sliding groove 32 on the surface of the rod body 31 and needs to be disassembled when there is liquid on the surface of the detection table 213 which is not easy to drain, the traction block 18 at the bottom is driven to move inside the positioning rod 3 through the winder 17 installed on the side of the shell 14.

[0050] Specifically, the winder 17 is internally provided with a driving winding motor 171, which is a micro stepping motor. The winding motor 171 cooperates with the wire slot 172 installed in the protective shell 174 to wind the wire 173. The wire 173 is wrapped by the protective shell 174, which can improve the sealing performance and protect the wire slot 172 and the wire 173, thereby improving the stability of use.

[0051] Wire 173 is powered for traction block 18, when the wire 173 is driven by the winding motor 171, the wire slot 172 is in a rotating state, in order to enable it to conduct electricity, the sliding contact 175 is arranged at the main shaft of the wire slot 172, and the sliding contact 175 is matched with the shaft rod of the wire slot 172, the surface of the sliding contact 175 is provided with a contact, and the contact on the surface of the shaft rod of the wire slot 172 is matched with the sliding contact 175, the wire of the wire 173 is welded at the connecting part of the contact of the wire slot 172, so that the wire can also conduct electricity during rotation and winding.

[0052] The first sliding rod 24 and the second sliding rod 25 are internally made of metal material, and externally provided with a corrosion-resistant protective layer, which cooperates with the traction block 18. The top of the traction block 18 is provided with a limiting block 181 matched with the wire 173. The limiting block 181 is installed on the top of the sealing shell 182. The sealing shell 182 wraps the inner core 183 and the coil 184 to avoid corrosion of the coil 184. The bottom of the sealing shell 182 is provided with a counterweight 185. The counterweight 185 can make the wire 173 in a vertical state by gravity, avoid winding, and more conveniently control the stroke of up and down displacement.

[0053] In order to avoid corrosion of the traction block 18 when it is soaked for a long time, the inner groove 33 of the positioning rod 3 is closed at the bottom to form a sealed cavity. In the initial state, the traction block 18 is driven by the winder 17 to be in the top position for convenient positioning, or when the movable plate 21 needs to be maintained, the winding motor 171 of the winder 17 works to make the wire slot 172 rotate clockwise, release the wire 173, and make the traction block 18 sink. At this time, the wire 173 forms a loop with the coil 184 inside, and the iron core 183 generates magnetism.

[0054] Since the probe 15 can record the distance parameter between the movable plate 21 and the probe 15 when the probe 15 works, the data of the winder 17 rotating can be referred to the data of the probe 15.

[0055] During maintenance work, the maintenance personnel sends signals through the terminal, the winder 17 traction block 18 is lowered to the position of the floater 2, and after reaching the position, it is reversely lifted. At this time, the movable plate 21 will be turned down without the support of the liquid surface. When the movable plate 21 is turned over, the probe 15 receives the weak parameter of the reflected light, which disappears and can be used as a reference for the working state. Then the winding motor 171 is repeatedly forward and reverse, so that the movable plate 21 is frequently turned over to separate the residual liquid on the surface.

[0056] At the same time, the winding motor 171 can drag the movable plate 21 to move a long distance, and the side sliding grooves 32 on both sides of the positioning rod 3 can be cleaned during the movement, so that the detection is more smooth.

[0057] The sealing shell 182 is made of plastic material, and a rectangular recess is arranged in the sealing shell 182 and matched with the iron core 183, and the outer surface of the sealing shell 182 is provided with a plane opposite to the iron core 183, and the wall thickness of the sealing shell 182 is reduced through the plane arranged opposite to the rectangular recess, so that the magnetic force is increased, and the sealing shell 182 is not easy to fall off during adsorption and dragging.

[0058] The device emits laser through the probe 15, receives the reflected light source generated electric signal for processing, the first slide rod 24 and the second slide rod 25 of the floater 2 are embedded in the opposite side sliding groove 32, the diameter of the first slide rod 24 is smaller than that of the second slide rod 25 to avoid being stuck in the side sliding groove 32, and the first slide rod 24 and the second slide rod 25 adopt a cylindrical structure, which can improve the smoothness of the up and down displacement, the plate body 211 and the movable shaft 212 are connected to avoid the large gap from causing the plate body 211 to shake too much and reduce the accuracy, and the detection table 213 is arranged on the top of the plate body 211 as the emitting surface of the laser point, and the drainage hole 214 is arranged around the detection table 213 to avoid the interference caused by the liquid on the surface.

[0059] And the first slide rod 24 and the second slide rod 25 of the movable plate 21 are magnetically attracted by the winding device 17 and the traction block 18, the floater 2 is driven to move up and down to make the movable plate 21 overturn, so that the liquid can be completely separated from the movable plate 21 under the action of gravitational potential energy, and the disassembly is more convenient during maintenance, and the up and down movement of the traction block 18 by the wire 173 can clean the inside of the side sliding groove 32 of the first slide rod 24 and the second slide rod 25, so that the detection is more sensitive, and the remaining dirt in the side sliding groove 32 after drying is avoided to affect the detection.

[0060] The above only describes the basic principle and preferred embodiment of the present application, and those skilled in the art can make many changes and improvements according to the above description, and these changes and improvements should belong to the protection scope of the present application.

[0061] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid level detector comprising in combination: The utility model provides a detector (1), the bottom of detector (1) is equipped with positioning rod (3), the surface of positioning rod (3) is equipped with slippable floater (2), it is characterized by: the floater (2) includes movable plate (21), both sides of movable plate (21) are equipped with side plate (22), the first slide rod (24) and the second slide rod (25) are installed to the inward extension of side plate (22), the side plate (22) is matched with the side edge sliding groove (32) of positioning rod (3) through the first slide rod (24) and the second slide rod (25), the movable plate (21) is movably connected with side plate (22), the diameter of second slide rod (25) is less than the diameter of first slide rod (24). The detector (1) includes the traction block (18) that slides up and down in the inside of positioning rod (3), the traction block (18) is equipped with the electromagnetic mechanism combined of iron core (183) and coil (184), and the first slide rod (24) and the second slide rod (25) of floater (2) are pulled through the magnetic force of traction block (18) moving up and down; The movable plate (21) includes plate body (211), the upper surface of plate body (211) is equipped with the detection table (213) of protruding, the surface edge of detection table (213) is equipped with the drainage hole (214) that passes through detection table (213) with plate body (211), the bottom of plate body (211) is equipped with bottom groove (216) and backflow hole (217), backflow hole (217) is opposite to the position of detection table (213), the edge of detection table (213) is equipped with inclined plane, and inclined plane is provided with the flow guide groove (215) of upper narrow lower end.

2. A liquid level detector as claimed in claim 1, characterized in that: The detector (1) further includes display (11) and mainboard (12), display (11) is installed on the surface of mainboard (12), the inside of mainboard (12) is provided with the power supply battery (13), the outside of display (11) is wrapped with shell (14), the bottom of shell (14) is equipped with mounting groove (16), and shell (14) is nestedly connected with positioning rod (3) through mounting groove (16), the bottom of shell (14) is also equipped with probe (15), the surface of shell (14) is provided with coiler (17) by the surface opposite of detector (1) with floater (2), the wire (173) inside coiler (17) is rolled and pulled to drive traction block (18) to move up and down.

3. A liquid level detector as claimed in claim 2, characterised in that: The surface of the rod body (31) of positioning rod (3) is recessed inward to form a side edge sliding groove (32), and the middle part of the rod body (31) is provided with an inner groove (33).

4. A liquid level detector as claimed in claim 1, characterized in that: A limiting groove (23) is arranged at the connection between the side plate (22) and the movable plate (21).

5. The liquid level detector of claim 1, wherein: An activity shaft (212) is arranged at the movable part of the plate body (211), the activity shaft (212) has a gap with the inner groove of the activity shaft (212), and the activity shaft (212) is engaged with the thread in the groove body of the limiting groove (23) through the threads on both sides.

6. A liquid level detector as claimed in claim 2, characterized in that: The winding device (17) comprises a wire slot (172) for accommodating the wire (173), the wire slot (172) is externally provided with a wrapped protective shell (174), one side of the protective shell (174) is provided with a winding motor (171) for driving the wire slot (172) to rotate forward and backward, the wire (173) is internally provided with a metal wire, and the metal wire of the wire (173) is connected with the internal circuit of the mainboard (12) through the wire slot (172) and the sliding contact (175).

7. A liquid level detector as claimed in claim 6, characterised in that: The wire (173) is internally provided with a metal wire and externally provided with an insulating sleeve.

8. A liquid level detector as claimed in claim 2, characterised in that: The traction block (18) comprises a limiting block (181) which is adhesively fixed with the outer skin of the wire (173), the limiting block (181) is connected with a sealed shell (182), the bottom of the sealed shell (182) is nested with an iron core (183), the iron core (183) and a coil (184) form an electromagnetic structure, the coil (184) is electrically connected with the internal metal wire of the wire (173), and the bottom of the sealed shell (182) is further provided with a counterweight (185).

9. A liquid level detector as claimed in claim 8, characterised in that: The sealed shell (182) is made of plastic material, is internally provided with a rectangular groove matched with the iron core (183) and is nested with the iron core (183), and the outer surface of the sealed shell (182) is provided with a plane opposite to the iron core (183).

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