Portable ultrasonic liquid level detection sensor

Abstract

The utility model discloses a portable ultrasonic liquid level detection sensor, and relates to the technical field of sensors. The device comprises a housing, the bottom of the housing is provided with a detection assembly, and the upper part of the housing is also provided with a fixing assembly. A sleeve rod in the detection assembly rotatably penetrates through the center of the bottom of the shell, a first inner rod is sleeved with the sleeve rod in a threaded mode, a second inner rod is sleeved with the first inner rod in a threaded mode, and a binding post is sleeved with the second inner rod in a threaded mode. The ultrasonic probe is stored through the threaded connection between the sleeve rod and the first inner rod, the threaded connection between the first inner rod and the second inner rod and the threaded connection between the second inner rod and the binding post, the occupied area of equipment is reduced, and the problem that an existing ultrasonic probe is inconvenient to carry is solved; and a first threaded rod in the U-shaped frame drives the movable plate and the shell to move in the longitudinal direction, meanwhile, the shell is driven by the lifting plate to move in the vertical direction, and the problem that in the prior art, after installation, the position is inconvenient to finely adjust is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and in particular relates to a portable ultrasonic liquid level detection sensor. Background Art

[0002] Ultrasonic liquid level sensor is a sensor developed by using the characteristics of ultrasonic waves to detect the liquid level. It is a non-contact switch that is convenient for detecting the liquid level of acid, alkali or corrosive liquids. It has high accuracy and is one of the most common liquid level sensors.

[0003] An ultrasonic liquid level sensor is disclosed in a document with an existing announcement number of CN220490175U, including an ultrasonic liquid level sensor body, the ultrasonic liquid level sensor body is composed of an outer sheath, an instrument head and a probe assembly, the outer sheath is sleeved on the outer surface of the instrument head, the probe assembly is connected to the bottom end of the instrument head, the instrument head is composed of a shell, a sealing panel, a controller, a sealing inner plate, a conductive plug connector and a plurality of heat dissipation metal strips, the controller is encapsulated in the middle position of the shell by a sealant, the sealing panel is fixedly connected to the top of the shell, the sealing inner plate is fixedly connected to the bottom of the shell, the conductive plug connector is located at the bottom of the sealing inner plate and is connected to the controller through a cable;

[0004] However, it still has the following disadvantages in actual use:

[0005] The ultrasonic liquid level sensor mentioned above, its ultrasonic liquid level sensor body is composed of an outer sheath, an instrument head and a probe assembly, and the probe assembly is composed of a connector, a detection probe rod, a sealing gasket, a sealing pressure plate, a limit spring and a top plate. The liquid level is ultrasonically detected by the detection probe rod. However, during use, since the detection probe rod is fixedly installed under the instrument head, it is easy to cause damage to the detection probe rod during carrying, which in turn affects the detection accuracy of the sensor and is not convenient to carry;

[0006] The ultrasonic liquid level sensor mentioned above has an outer sheath on the outer surface of its instrument head to protect the instrument head. However, it is inconvenient to install the instrument head during use, and it is inconvenient to fine-tune the installation position of the instrument head after installation, which affects the subsequent liquid level detection work.

[0007] To this end, we provide a portable ultrasonic liquid level detection sensor to solve the above problems. Utility Model Content

[0008] The utility model aims to provide a portable ultrasonic liquid level detection sensor, which stores an ultrasonic probe through threaded connections between a sleeve rod and an inner rod 1, an inner rod 1 and an inner rod 2, and an inner rod 2 and a terminal, thereby reducing the footprint of the device and solving the problem of the existing inconvenience in carrying. The threaded rod 1 in the U-shaped frame drives the movable plate and the shell to move longitudinally, and the lifting plate drives the shell to move vertically, thereby solving the existing problem of inconvenience in fine-tuning its position after installation.

[0009] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0010] The utility model is a portable ultrasonic liquid level detection sensor, comprising a shell, a detection component is arranged at the bottom of the shell, and a fixing component is arranged above the shell;

[0011] The sleeve rod in the detection assembly rotates and penetrates the bottom center of the shell, the top end of the sleeve rod is located inside the shell, the inner thread sleeve of the sleeve rod is provided with an inner rod 1, the inner thread sleeve of the inner rod 1 is provided with an inner rod 2, the inner thread sleeve of the inner rod 2 is provided with a terminal, and the terminal is located at one end of the outer side of the inner rod and is fixedly connected with an ultrasonic probe;

[0012] The U-shaped frame in the fixed assembly is located above the shell, and the front end of the vertical support arm of the U-shaped frame is fixedly connected to the U-shaped frame, and the interior of the U-shaped frame is movably connected to a moving plate along the longitudinal direction, and a threaded hole is opened at the center position of the rear end surface of the moving plate, and a threaded rod 1 is provided on the internal thread sleeve of the threaded hole, and the rear end of the threaded rod 1 rotates to pass through the horizontal support arm of the U-shaped frame and the vertical support arm of the U-shaped frame in turn and is fixedly connected to a knob, and a lifting plate is movably connected to the lower side of the moving plate, and an upper clamping block is fixedly connected to the lower surface of the lifting plate, and a lower clamping block is fixedly connected to the bottom of the upper clamping block, and the upper clamping block and the lower clamping block are respectively clamped on the top and bottom of the shell.

[0013] The utility model is further configured as follows: mounting seats are fixedly connected to both sides of the inner top of the shell, a winding roller is rotatably connected between the mounting seats, torsion springs are fixedly connected to both ends of the winding roller, one end of the torsion spring away from the winding roller is fixedly connected to the mounting seats, a wire is wound around the outer wall of the winding roller, one end of the wire passes through the wiring holes at the top of the sleeve rod, inner rod one, and inner rod two in sequence and is electrically connected to the top of the terminal.

[0014] The utility model is further configured as follows: a circuit board is fixedly connected to the inner rear end of the shell, the circuit board is electrically connected to the other end of the wire, a front cover is fixedly connected to the inner front end of the shell, and a display screen is fixedly connected to the front end surface of the front cover.

[0015] The utility model is further configured as follows: an end of the inner rod 1 located outside the sleeve rod and an end of the inner rod 2 located outside the inner rod 1 are both bonded with anti-slip sleeves.

[0016] The utility model is further configured as follows: a fixing plate is welded to the rear end of the longitudinal support arm of the U-shaped frame, a mounting groove is opened on the rear end surface of the fixing plate, a magnet is fixedly connected inside the mounting groove, and through holes are opened on both sides of the end surface of the fixing plate.

[0017] The utility model is further configured as follows: slide grooves are provided on the longitudinal arms on both sides of the U-shaped frame, and sliders are slidably connected inside the slide grooves. One side of the slider passes through the slide groove and is respectively welded to the rear ends of the outer walls on both sides of the moving plate.

[0018] The utility model is further configured as follows: the front ends of both sides of the upper surface of the movable plate are penetrated by a rotating rod which rotates vertically, the interior of the rotating rod is threadedly sleeved with a threaded rod 2, the top of the threaded rod 2 is threadedly sleeved with a limit bolt, and the bottom ends of the threaded rod 2 are respectively welded to both sides of the upper surface of the lifting plate.

[0019] The utility model is further configured as follows: a plurality of grooves are provided at equal intervals along the circumferential direction on the inner sides of the upper clamping block and the lower clamping block; protruding columns are provided inside the grooves with clearance fit; and one end of the protruding columns located outside the grooves is respectively welded to the top and bottom of the shell.

[0020] The utility model is further configured as follows: ear seats are welded on both side outer walls of the upper clamping block and the lower clamping block, and the upper and lower adjacent ear seats are fixedly connected by stud bolts.

[0021] The utility model has the following beneficial effects:

[0022] The utility model arranges a detection component, and the inner rod one is rotated relative to the sleeve rod, so that under the action of the threaded connection between the sleeve rod and the inner rod one, the inner rod one moves to the inner side of the sleeve rod or moves out from the inner side of the sleeve rod. Similarly, the inner rod two is rotated relative to the inner rod one and the terminal is rotated relative to the inner rod two, thereby realizing the storage and removal of the ultrasonic probe, thereby reducing the overall volume of the device and facilitating its carrying.

[0023] The utility model provides a fixing component, fixes the shell body on the U-shaped frame through the upper clamping block and the lower clamping block, and installs the U-shaped frame on the designated equipment by bolt fixing through the through holes on the fixing plate, drives the threaded rod one to rotate through the knob, so that under the action of the threaded screwing connection between the threaded rod one and the threaded hole, the threaded rod one drives the moving plate to move in the longitudinal direction, and at the same time applies an external force to the rotating rod, so that under the action of the threaded connection between the rotating rod and the threaded rod two, the threaded rod two drives the shell body to be lifted and lowered through the lifting plate, thereby realizing the adjustment of the position of the equipment after installation, thereby facilitating the detection of the liquid level height.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of a portable ultrasonic liquid level detection sensor;

[0027] Figure 2 This is a structural disassembly diagram of the housing of the utility model;

[0028] Figure 3 It is a structural schematic diagram of the detection component of the utility model;

[0029] Figure 4 It is a front cross-sectional view of the sleeve rod of the utility model;

[0030] Figure 5 This is a structural disassembly diagram of the winding roller of the utility model;

[0031] Figure 6 It is a structural schematic diagram of the fixing assembly of the utility model;

[0032] Figure 7 This is a structural disassembly diagram of the U-shaped frame of the utility model;

[0033] Figure 8 It is a structural schematic diagram of the movable plate of the utility model;

[0034] Fig. 9 It is a schematic diagram of the installation between the upper clamping block and the lower clamping block of the utility model.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 100-housing, 101-circuit board, 102-front cover, 103-display screen, 104-convex column, 200-detection component, 201-rod, 201a-wiring hole, 202-inner rod 1, 202a-anti-slip cover, 203-inner rod 2, 204-connection post, 204a-conductor wire, 205-ultrasonic probe, 206-winding roller, 206a-mounting seat, 206b-torsion spring, 300-fixing component, 301-U-shaped frame, 301a-fixing plate , 301b-mounting groove, 301c-magnet, 301d-through hole, 302-U-shaped frame, 302a-threaded rod one, 302b-knob, 302c-slide groove, 303-moving plate, 303a-threaded hole, 303b-slider, 303c-rotating rod, 303d-threaded rod two, 303e-limiting bolt, 304-lifting plate, 305-upper clamp, 305a-groove, 305b-ear seat, 305c-stud bolt, 306-lower clamp. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] For example, see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it is the first embodiment of the utility model, which provides a portable ultrasonic liquid level detection sensor, including a shell 100, a detection component 200 is arranged at the bottom of the shell 100, and the detection component 200 includes a sleeve rod 201, an inner rod 1 202, an inner rod 203, a terminal 204 and an ultrasonic probe 205. The ultrasonic probe 205 is stored by threaded connection between the sleeve rod 201 and the inner rod 1 202, the inner rod 1 202 and the inner rod 203, and the inner rod 203 and the terminal 204, thereby solving the existing problem of inconvenience in carrying.

[0039] Specifically, the sleeve rod 201 rotates and penetrates the bottom center position of the shell 100, the top of the sleeve rod 201 is located inside the shell 100, the inner thread of the sleeve rod 201 is sleeved with an inner rod 1 202, the inner thread of the inner rod 1 202 is sleeved with an inner rod 203, the inner thread of the inner rod 203 is sleeved with a terminal 204, and the terminal 204 is located at one end of the outer side of the inner rod and is fixedly connected to an ultrasonic probe 205. The inner side surfaces of the sleeve rod 201, the inner rod 1 202 and the inner rod 203 are all provided with internal threads, and the outer surfaces of the inner rod 1 202, the inner rod 203 and the terminal 204 are The side surfaces are all provided with external threads. When the inner rod 202, the inner rod 203 or the terminal 204 rotates forward, the inner rod 202, the inner rod 203 or the terminal 204 moves toward the inner side of the sleeve rod 201, the inner rod 202 or the inner rod 203 respectively. Conversely, when the inner rod 202, the inner rod 203 or the terminal 204 rotates reversely, the inner rod 202, the inner rod 203 or the terminal 204 moves toward the outer side of the sleeve rod 201, the inner rod 202 or the inner rod 203 respectively. The setting of the ultrasonic probe 205 realizes the transmission and reception of ultrasonic waves.

[0040] Further, mounting seats 206a are fixedly connected to both sides of the inner top of the housing 100, and a winding roller 206 is rotatably connected between the mounting seats 206a. Torsion springs 206b are fixedly connected to both ends of the winding roller 206, and one end of the torsion spring 206b away from the winding roller 206 is fixedly connected to the mounting seat 206a. A wire 204a is wound around the outer wall of the winding roller 206, and one end of the wire 204a passes through the wiring holes 201a at the top of the sleeve rod 201, the inner rod 1 202, and the inner rod 203 in sequence and is electrically connected to the top of the terminal 204. The mounting seat 206a is used to install the winding roller 206, and the winding roller 206 is used to store the wire 204a. The torsion spring 206b is used to drive the winding roller 206 to automatically wind up the wire 204a, and the wire 204a is used to electrically connect the terminal 204 with the circuit board 101.

[0041] The rear end of the housing 100 is fixedly connected with a circuit board 101, which is electrically connected to the other end of the wire 204a. The front end of the housing 100 is fixedly connected with a front cover 102, and the front end surface of the front cover 102 is fixedly connected with a display screen 103. The circuit board 101 is provided with electronic components such as a single-chip microcomputer and a piezoelectric chip. The circuit board 101 is provided to realize the generation of ultrasonic waves and liquid level calculation, etc. The front cover 102 is provided to seal the interior of the housing 100, and the display screen 103 is provided to display the liquid level height.

[0042] One end of the inner rod 1 202 located outside the sleeve rod 201 and one end of the inner rod 203 located outside the inner rod 1 202 are both bonded with anti-skid sleeves 202a. The provision of the anti-skid sleeves 202a facilitates the rotation of the inner rods 1 202 and 203.

[0043] The operation process of this embodiment is as follows: first, the inner rod 1 202 is reversed relative to the sleeve rod 201, and under the action of the threaded connection between the sleeve rod 201 and the inner rod 1 202, the inner rod 1 202 is moved out from the inside of the sleeve rod 201, and the inner rod 2 203 and the terminal 204 are reversed relative to the inner rod 1 202 and the inner rod 2 203, so that the inner rod 203 and the terminal 204 are moved out from the inside of the inner rod 1 202 and the inner rod 2 203 respectively, then the shell 100 is installed on the designated equipment, and the circuit board 101 in the shell 100 is energized, so that under the action of the piezoelectric chip on the circuit board 101, the ultrasonic probe 205 generates ultrasonic waves to the equipment, and the ultrasonic waves are received by the ultrasonic probe 205, and the movement distance of the ultrasonic waves is calculated according to the movement time of the ultrasonic waves by the single chip microcomputer on the circuit board 101, so as to obtain the liquid level height, and the liquid level height is displayed in real time through its display screen 103, thereby completing the ultrasonic detection of the liquid level of the equipment.

[0044] For example 2, please refer to Figure 1 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, it is the second embodiment of the utility model, which is based on the previous embodiment, but is different from the previous embodiment in that a fixing assembly 300 is also arranged above the shell 100, and the fixing assembly 300 includes a U-shaped frame 301, a U-shaped frame 302, a movable plate 303, a lifting plate 304, an upper clamping block 305 and a lower clamping block 306. The longitudinal position of the shell 100 is adjusted by the movable connection between the U-shaped frame 302 and the movable plate 303, and the vertical position of the shell 100 is adjusted by the movable connection between the movable plate 303 and the lifting plate 304, which solves the existing problem of being inconvenient to adjust the position of the shell 100 after installation.

[0045] Specifically, the U-shaped frame 301 is located above the shell 100, and the front end of the vertical support arm of the U-shaped frame 301 is fixedly connected to the U-shaped frame 302, and the interior of the U-shaped frame 302 is movably connected to a movable plate 303 along the longitudinal direction, and a threaded hole 303a is opened at the center of the rear end surface of the movable plate 303, and the internal thread of the threaded hole 303a is sleeved with a threaded rod 1 302a, and the rear end of the threaded rod 1 302a rotates through the horizontal support arm of the U-shaped frame 302 and the vertical support arm of the U-shaped frame 301 in turn and is fixedly connected to a knob 302b, and a lifting plate 304 is movably connected to the lower surface of the lifting plate 304, and an upper clamping block 305 is fixedly connected to the bottom of the upper clamping block 305. The lower clamping block 306 is fixedly connected to the lower The upper clamp block 305 and the lower clamp block 306 are respectively clamped on the top and bottom of the shell 100. The setting of the U-shaped frame 301 realizes the installation of the shell 100 on other equipment. The setting of the U-shaped frame 302 is used to movably install the movable plate 303. The setting of the threaded rod 302a and the threaded hole 303a is used to drive the movable plate 303 to move longitudinally relative to the U-shaped frame 302. The setting of the knob 302b facilitates the rotation of the threaded rod 302a. The setting of the movable plate 303 is used to adjust the longitudinal position of the shell 100. The setting of the lifting plate 304 is used to adjust the vertical position of the shell 100. The setting of the upper clamp block 305 and the lower clamp block 306 is used to install the shell 100 on the lifting plate 304.

[0046] Furthermore, the rear ends of the longitudinal arms of the U-shaped frame 301 are welded with fixing plates 301a, the rear end surfaces of the fixing plates 301a are provided with mounting grooves 301b, the interiors of the mounting grooves 301b are fixedly connected with magnets 301c, through holes 301d are provided on both sides of the end surfaces of the fixing plates 301a, the fixing plates 301a and the through holes 301d are provided to install the U-shaped frame 301 on other equipment by bolting, the mounting grooves 301b are provided to install the magnets 301c, and the magnets 301c are provided to allow the fixing plates 301a to be magnetically adsorbed on other equipment, thereby facilitating the fixing plates 301a to be installed on other equipment by bolting;

[0047] The longitudinal arms on both sides of the U-shaped frame 302 are provided with a slide groove 302c, and the inside of the slide groove 302c is slidably connected with a slider 303b, one side of the slider 303b passes through the slide groove 302c and is respectively welded to the rear end of the outer wall on both sides of the movable plate 303, and the slide groove 302c and the slider 303b are arranged to movably install the movable plate 303 inside the U-shaped frame 302;

[0048] The front ends of both sides of the upper surface of the movable plate 303 are penetrated by a rotating rod 303c that rotates vertically. The interior of the rotating rod 303c is threadedly sleeved with a threaded rod 303d. The top of the threaded rod 303d is threadedly sleeved with a limiting bolt 303e. The bottom ends of the threaded rod 303d are respectively welded to both sides of the upper surface of the lifting plate 304. The rotating rod 303c and the threaded rod 303d are arranged to adjust the distance between the movable plate 303 and the lifting plate 304, thereby adjusting the installation height of the shell 100. The limiting bolt 303e is arranged to limit the movement distance of the threaded rod 303d to prevent the threaded rod 303d from escaping from the rotating rod 303c.

[0049] The inner sides of the upper clamping block 305 and the lower clamping block 306 are provided with multiple groups of grooves 305a at equal intervals along the circumferential direction, and the inner sides of the grooves 305a are provided with bosses 104 with clearance fit, and the ends of the bosses 104 located outside the grooves 305a are respectively welded to the top and bottom of the housing 100, and the arrangement of the bosses 104 and the grooves 305a realizes the clamping connection between the upper clamping block 305 and the lower clamping block 306 and the housing 100;

[0050] Ear seats 305b are welded on the outer walls of both sides of the upper clamping block 305 and the lower clamping block 306. The upper and lower adjacent ear seats 305b are fixedly connected by stud bolts 305c. The setting of the ear seats 305b and the stud bolts 305c realizes the fixation between the upper clamping block 305 and the lower clamping block 306.

[0051] The rest of the structure is the same as that of the first embodiment.

[0052] The operation process of this embodiment is as follows: first, the fixing plate 301a is magnetically attracted to other equipment through the magnet 301c, and the fixing plate 301a is installed on other equipment through the bolts and the through holes 301d, then the shell 100 is clamped between the upper clamp block 305 and the lower clamp block 306, and the upper clamp block 305 and the lower clamp block 306 are fixed by the stud bolts 305c, and finally the position of the shell 100 is adjusted, and the knob 302b is turned, and the knob 302b drives the threaded rod 1 302a to rotate synchronously, and the threaded connection between the threaded rod 1 302a and the threaded hole 303a causes the movable plate 303 to drive the shell 100 to move in the longitudinal direction, and at the same time, an external force is applied to the rotating rod 303c, so that the rotating rod 303c rotates synchronously, and under the action of the threaded connection between the rotating rod 303c and the threaded rod 2 303d, the lifting plate 304 drives the shell 100 to move vertically, thereby realizing the adjustment of the installation position of the shell 100.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A portable ultrasonic liquid level detection sensor, comprising a housing (100), a detection component (200) being arranged at the bottom of the housing (100), and a fixing component (300) being arranged above the housing (100), characterized in that: The sleeve rod (201) in the detection component (200) rotates and penetrates the bottom center position of the shell (100), and the top end of the sleeve rod (201) is located inside the shell (100); the inner thread of the sleeve rod (201) is sleeved with an inner rod 1 (202), and the inner thread of the inner rod 1 (202) is sleeved with an inner rod 2 (203); the inner thread of the inner rod 2 (203) is sleeved with a terminal (204), and one end of the terminal (204) located outside the inner rod is fixedly connected to an ultrasonic probe (205); The U-shaped frame (301) in the fixing assembly (300) is located above the housing (100), and the front end of the vertical support arm of the U-shaped frame (301) is fixedly connected to the U-shaped frame (302), the interior of the U-shaped frame (302) is movably connected to a movable plate (303) along the longitudinal direction, and a threaded hole (303a) is provided at the center of the rear end surface of the movable plate (303), the internal thread sleeve of the threaded hole (303a) is provided with a threaded rod (302a), and the rear end of the threaded rod (302a) is The ends of the movable plate (303) are rotated in sequence to pass through the horizontal support arms of the U-shaped frame (302) and the vertical support arms of the U-shaped frame (301) and are fixedly connected to a knob (302b); a lifting plate (304) is movably connected below the movable plate (303); an upper clamping block (305) is fixedly connected to the lower surface of the lifting plate (304); a lower clamping block (306) is fixedly connected to the bottom of the upper clamping block (305); and the upper clamping block (305) and the lower clamping block (306) are respectively clamped at the top and bottom of the shell (100).

2. A portable ultrasonic liquid level detection sensor according to claim 1, characterized in that: Both sides of the inner top of the shell (100) are fixedly connected with mounting seats (206a), and a winding roller (206) is rotatably connected between the mounting seats (206a), and both ends of the winding roller (206) are fixedly connected with torsion springs (206b), and the ends of the torsion springs (206b) away from the winding roller (206) are fixedly connected to the mounting seats (206a), and a wire (204a) is wound around the outer wall of the winding roller (206), and one end of the wire (204a) passes through the wiring holes (201a) at the top ends of the sleeve rod (201), the inner rod one (202), and the inner rod two (203) in sequence and is electrically connected to the top end of the terminal (204).

3. A portable ultrasonic liquid level detection sensor according to claim 2, characterized in that: The inner rear end of the shell (100) is fixedly connected to a circuit board (101), and the circuit board (101) is electrically connected to the other end of the wire (204a); the inner front end of the shell (100) is fixedly connected to a front cover plate (102), and the front end surface of the front cover plate (102) is fixedly connected to a display screen (103).

4. A portable ultrasonic liquid level detection sensor according to claim 2, characterized in that: An end of the inner rod one (202) located outside the sleeve rod (201) and an end of the inner rod two (203) located outside the inner rod one (202) are both bonded with an anti-slip sleeve (202a).

5. The portable ultrasonic liquid level detection sensor according to claim 1, characterized in that: A fixing plate (301a) is welded to the rear end of the longitudinal support arm of the U-shaped frame (301), and a mounting groove (301b) is provided on the rear end surface of the fixing plate (301a), a magnet (301c) is fixedly connected inside the mounting groove (301b), and through holes (301d) are provided on both sides of the end surface of the fixing plate (301a).

6. The portable ultrasonic liquid level detection sensor according to claim 1, characterized in that: The longitudinal arms on both sides of the U-shaped frame (302) are provided with sliding grooves (302c), and the interior of the sliding grooves (302c) is slidably connected with sliders (303b), and one side of the sliders (303b) passes through the sliding grooves (302c) and is respectively welded to the rear ends of the outer walls on both sides of the movable plate (303).

7. The portable ultrasonic liquid level detection sensor according to claim 1, characterized in that: The front ends of both sides of the upper surface of the movable plate (303) are vertically rotated and penetrated by rotating rods (303c), and the interior of the rotating rods (303c) is threadedly sleeved with threaded rods (303d), and the top ends of the threaded rods (303d) are threadedly sleeved with limit bolts (303e), and the bottom ends of the threaded rods (303d) are respectively welded to both sides of the upper surface of the lifting plate (304).

8. The portable ultrasonic liquid level detection sensor according to claim 1, characterized in that: The inner sides of the upper clamping block (305) and the lower clamping block (306) are provided with a plurality of groups of grooves (305a) at equal intervals along the circumferential direction, and the interiors of the grooves (305a) are provided with protruding columns (104) in a clearance fit, and the ends of the protruding columns (104) located outside the grooves (305a) are respectively welded to the top and bottom of the housing (100).

9. The portable ultrasonic liquid level detection sensor according to claim 8, characterized in that: Ear seats (305b) are welded on both side outer walls of the upper clamping block (305) and the lower clamping block (306), and upper and lower adjacent ear seats (305b) are fixedly connected by stud bolts (305c).

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