Ultrasonic liquid level meter

Abstract

The utility model provides an ultrasonic liquid level meter which comprises a junction box, an ultrasonic probe is installed at the bottom of the junction box, one end, close to the junction box, of the ultrasonic probe is sleeved with a threaded connection seat fixedly connected with the ultrasonic probe, and the threaded connection seat is of a cylindrical structure. The upper end of the threaded connection seat is provided with a hexahedron used for clamping a wrench, the hexahedron sleeves the ultrasonic probe and is fixedly connected with the ultrasonic probe, the threaded connection seat is sleeved with a ring, the annular side surface of the ring is provided with a column rod, the annular side surface of the junction box is provided with a lug plate, and the lug plate is provided with a bolt. A guide hole is formed in the upper surface of the lug plate, the upper end of the column rod penetrates through the guide hole, a limiting ring is arranged on the lower side of the lug plate, and a spring is arranged between the limiting ring and the lug plate. The threaded connection seat has the advantages that threads on the threaded connection seat are protected, and the probability that the threads on the threaded connection seat are damaged due to collision is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to an ultrasonic liquid level meter belongs to liquid level meter field. BACKGROUND

[0002] The ultrasonic liquid level meter is a non-contact liquid level measuring instrument based on ultrasonic ranging principle, and realizes liquid level height calculation through emitting and receiving ultrasonic signals. The threaded connection seat on the core component ultrasonic probe is a commonly used mounting interface, and is fixed by screwing with the container threaded port. However, this key structure faces a high risk of collision during transportation, transfer or on-site installation, that is, collision during transportation causes the thread profile to be skewed, flattened, or even partially broken (such as the loss of the tooth top of M27x2 thread), causing jamming or failure to screw in during screwing. When the thread is severely deformed, it cannot be screwed with the container threaded port, and the parts need to be returned to the factory for repair or replacement, resulting in delayed installation period. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model aims to provide an ultrasonic liquid level meter to solve the problems raised in the background art. The utility model realizes protection of the threads on the threaded connection seat, reducing the probability of damage to the threads on the threaded connection seat due to collision.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented by the following technical scheme: an ultrasonic liquid level meter, comprising a junction box, the junction box is provided with an ultrasonic probe at the bottom, one end of the ultrasonic probe close to the junction box is provided with a threaded connection seat connected and fixed with the ultrasonic probe, the threaded connection seat is a cylindrical structure, a hexahedron for clamping a wrench is installed at the upper end of the threaded connection seat, the hexahedron is sleeved on the ultrasonic probe and connected and fixed with the ultrasonic probe, a ring is sleeved on the threaded connection seat, a column is installed on the annular side surface of the ring, an ear plate is installed on the annular side surface of the junction box, a guide hole is formed in the upper surface of the ear plate, the upper end of the column penetrates through the guide hole, a limiting ring is arranged on the lower side of the ear plate, the limiting ring is sleeved on the column and connected and fixed with the column, a spring is arranged between the limiting ring and the ear plate, and the spring is sleeved on the column.

[0005] Further, the side of the ear plate away from the limiting ring is provided with a blocking plate, the blocking plate is connected and fixed with the junction box, and a gap exists between the blocking plate and the ear plate.

[0006] Further, the upper side of the blocking plate is provided with a wire pipe, the wire pipe is connected and fixed with the junction box, and the wire pipe is communicated with the internal space of the junction box.

[0007] Further, the upper surface of the blocking plate is concave downward to form two semicircular linear grooves, and a pressing ring for pressing the cable is arranged on the upper side of the linear groove, and the pressing ring is connected with the blocking plate through a fastener formed by a screw and a nut.

[0008] Further, the upper end of the junction box is open, and a plug cover is threadedly connected to the upper end of the junction box, and two symmetrically arranged protrusions are arranged on the upper surface of the plug cover.

[0009] Further, a horizontal plate is arranged on the annular side of the ring, and the lower end of the column rod is threadedly connected with the horizontal plate.

[0010] Further, a threaded sleeve is arranged on the side of the upper surface of the horizontal plate away from the ring, and an outer thread is formed on the outer surface of the end of the column rod close to the horizontal plate, and the end of the column rod with the outer thread is threadedly connected in the threaded sleeve.

[0011] The utility model discloses the beneficial effect of:

[0012] 1. Under the support of the spring, the ring is away from the one end of the hexahedron of the threaded connection seat, and the structure formed by the ring and the hexahedron protects the threaded connection seat, and the distance between the ring and the hexahedron is small, so other objects will not directly collide with the threaded connection seat, and the thread on the threaded connection seat is protected, and the probability of damage to the thread on the threaded connection seat due to impact is reduced.

[0013] 2. When the threaded connection seat is installed in the threaded port of the container, the ring can be selected to be not disassembled or disassembled, when the ring is not disassembled, the ring is extruded by the container and the hexahedron, at this time, the ring drives the column rod to move along the guide hole, when the length of the column rod on the upper side of the ear plate reaches the set length, that is, the upper end of the column rod contacts the blocking plate, the wrench is stopped to continue to twist the hexahedron, the thread on the threaded connection seat is prevented from being damaged due to excessive torque, and the threaded connection seat is prevented from being loosened randomly under the action of the spring resilience, so that it is unnecessary to set the elastic washer on the threaded connection seat.

[0014] 3. The blocking plate cooperates with the column rod to prevent the threaded connection seat from being over-tightened, and a part of the cable connected in the junction box is limited in the linear groove by the snap ring, the position of the cable close to the junction box is limited, and the tensile property of the cable is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of non-restrictive embodiments with reference to the accompanying drawings:

[0016] Figure 1 It is a structure schematic view of the utility model ultrasonic liquid level meter.

[0017] Figure 2 is another perspective view of the ultrasonic liquid level meter of the utility model;

[0018] Figure 3 is an assembly schematic view of the threaded connecting seat, hexahedron, ultrasonic probe and junction box in the ultrasonic liquid level meter of the utility model;

[0019] Figure 4 is an assembly schematic view of the limiting ring, spring, columnar rod and ring in the ultrasonic liquid level meter of the utility model;

[0020] In the figure: 1 - junction box, 2 - plug cover, 3 - protruding part, 4 - threading pipe, 5 - blocking plate, 6 - wire slot, 7 - pressing ring, 8 - spring, 9 - limiting ring, 10 - columnar rod, 11 - threaded sleeve, 12 - cross plate, 13 - ultrasonic probe, 14 - ring, 15 - threaded connecting seat, 16 - hexahedron, 17 - lug plate, 18 - guide hole. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0022] Please refer to Figures 1-3 The utility model provides a technical scheme: an ultrasonic liquid level meter, including junction box 1, the bottom of junction box 1 is installed with ultrasonic probe 13, the one end of ultrasonic probe 13 close to junction box 1 is equipped with the threaded connecting seat 15 connected with ultrasonic probe 13 fixedly, the threaded connecting seat 15 is cylindrical structure, the upper end of threaded connecting seat 15 is installed with the hexahedron 16 for the jointing spanner, the hexahedron 16 is equipped in ultrasonic probe 13 and is connected with ultrasonic probe 13 fixedly, the upper end of junction box 1 is open, the upper end of junction box 1 is connected with plug cover 2, the upper surface of plug cover 2 is installed with two symmetrical arrangement protruding part 3, by protruding part 3, plug cover 2 is conveniently screwed, realizes the opening and closing of junction box 1.

[0023] Please refer to Figures 1-4The ring 14 is sleeved on the threaded connecting seat 15, the horizontal plate 12 is installed on the annular side of the ring 14, the threaded sleeve 11 is installed on the upper surface of the horizontal plate 12 away from the ring 14, the outer thread is processed on the outer surface of one end of the columnar rod 10 close to the horizontal plate 12, the threaded sleeve 11 is threaded on the end of the columnar rod 10, the ear plate 17 is installed on the annular side of the junction box 1, the guide hole 18 is formed in the upper surface of the ear plate 17, the upper end of the columnar rod 10 penetrates through the guide hole 18, the limiting ring 9 is arranged on the lower side of the ear plate 17 and is sleeved on the columnar rod 10 and is connected and fixed with the columnar rod 10, the spring 8 is arranged between the limiting ring 9 and the ear plate 17 and is sleeved on the columnar rod 10, the blocking plate 5 is arranged on the side of the ear plate 17 away from the limiting ring 9 and is connected and fixed with the junction box 1, the gap is arranged between the blocking plate 5 and the ear plate 17, the wire tube 4 is arranged on the upper side of the blocking plate 5 and is connected and fixed with the junction box 1, the wire tube 4 is communicated with the internal space of the junction box 1, the upper surface of the blocking plate 5 is concave downward to form two semicircular wire grooves 6, the pressing ring 7 for pressing the cable is arranged on the upper side of the wire groove 6, the pressing ring 7 is connected with the blocking plate 5 through the fastener formed by the screw and the nut, the cable is placed in the wire groove 6 and is fixed by the pressing ring 7, the position of the cable is limited, the cable is prevented from shaking, and the tensile property of the cable is improved.

[0024] Referring to Figures 1-4 The ring 14 is sleeved on the threaded connecting seat 15, the spring 8 is in a natural state, the ring 14 and the hexahedron 16 are respectively located at two ends of the threaded connecting seat 15, and the threaded connecting seat 15 is protected. During transportation, if collision occurs, the ring 14 and the hexahedron 16 first contact external objects, so that the threaded connecting seat 15 is prevented from being directly stressed. During installation, the threaded connecting seat 15 is screwed into the container interface by rotating the hexahedron 16 through a wrench, the columnar rod 10 moves along the guide hole 18, and the spring 8 is compressed. When the upper end of the columnar rod 10 abuts against the blocking plate 5, it is indicated that the threaded connecting seat 15 has been correctly installed, and the threaded connecting seat 15 is prevented from being excessively screwed in to cause damage to the thread. The rebound force of the spring 8 can prevent the threaded connecting seat 15 from loosening, and an elastic washer does not need to be additionally installed.

[0025] Although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner 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. An ultrasonic liquid level meter comprising a terminal box (1), characterized in that: The bottom of the terminal box (1) is provided with an ultrasonic probe (13), one end of the ultrasonic probe (13) is sleeved with a threaded connecting seat (15) connected with the ultrasonic probe (13), the threaded connecting seat (15) is a cylindrical structure, a hexahedron (16) for clamping a wrench is installed on the upper end of the threaded connecting seat (15), the hexahedron (16) is sleeved on the ultrasonic probe (13) and is connected with the ultrasonic probe (13), a ring (14) is sleeved on the threaded connecting seat (15), a column rod (10) is installed on the annular side of the ring (14), an ear plate (17) is installed on the annular side of the terminal box (1), a guide hole (18) is formed in the upper surface of the ear plate (17), the upper end of the column rod (10) penetrates through the guide hole (18), a limiting ring (9) is arranged on the lower side of the ear plate (17), the limiting ring (9) is sleeved on the column rod (10) and is connected with the column rod (10), a spring (8) is arranged between the limiting ring (9) and the ear plate (17), and the spring (8) is sleeved on the column rod (10).

2. An ultrasonic liquid level meter according to claim 1, characterized in that: The side, away from the limiting ring (9), of the ear plate (17) is provided with a blocking plate (5), the blocking plate (5) is connected with the terminal box (1), and a gap is formed between the blocking plate (5) and the ear plate (17).

3. An ultrasonic liquid level meter according to claim 2, characterized in that: The upper side of the blocking plate (5) is provided with a wire pipe (4), the wire pipe (4) is connected with the terminal box (1), and the wire pipe (4) is communicated with the internal space of the terminal box (1).

4. An ultrasonic liquid level meter according to claim 3, characterized in that: The upper surface of the blocking plate (5) is concave downward to form two semicircular wire grooves (6), the upper side of the wire groove (6) is provided with a pressing ring (7) for pressing a cable, and the pressing ring (7) is connected with the blocking plate (5) through a fastener formed by a screw and a nut.

5. An ultrasonic liquid level meter according to claim 1, characterized in that: The upper end of the terminal box (1) is open, a plug cover (2) is threadedly connected to the upper end of the terminal box (1), and the upper surface of the plug cover (2) is provided with two symmetrically arranged convex portions (3).

6. An ultrasonic liquid level meter according to claim 1, characterized in that: The annular side of the ring (14) is provided with a horizontal plate (12), and the lower end of the column rod (10) is threadedly connected with the horizontal plate (12).

7. An ultrasonic liquid level meter according to claim 6, characterized in that: The upper surface of the horizontal plate (12) is provided with a threaded sleeve (11) away from the ring (14), the outer surface of one end of the column rod (10) close to the horizontal plate (12) is processed with external threads, and the end of the column rod (10) processed with the external threads is threadedly connected in the threaded sleeve (11).

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