A retractable submersible level transmitter

Abstract

This utility model discloses a reel-type submersible level transmitter, including a base and a winding reel for winding the cable of the submersible level transmitter. The base has an expansion structure in the middle that can change the winding diameter of the reel. An arc-shaped plate that can support each turn of cable is fixed on the outer wall of the winding reel. Each arc-shaped plate has a limiting groove at both ends that can limit the outer wall of the cable. A vent pipe is provided at one end of the cable. This utility model provides independent support for each turn of cable by setting a spirally rising arc-shaped plate on the outer wall of each winding reel. This avoids the problem of the internal vent capillary tube being squeezed by gravity when the cable is stacked, preventing the capillary tube from being flattened or deformed. Moreover, the arc-shaped plate is inclined inward relative to the winding reel. When the cable is manually and freely coiled, the cable is automatically located on the side of the arc-shaped plate closer to the winding reel, without needing to be tightly wound, and the cable will not fall off the winding reel.

Description

Technical Field

[0001] This utility model relates to the field of liquid level transmitter technology, specifically a retractable submersible liquid level transmitter. Background Technology

[0002] An immersion level transmitter is an industrial instrument that measures liquid level by directly immersing itself in a liquid. Its cable is typically retractable to meet specific application requirements, but it contains an internal venting capillary tube that transmits atmospheric pressure to the sensor's reference end, enabling it to measure gauge pressure.

[0003] If the capillary tube is flattened or blocked, atmospheric pressure cannot be properly introduced, and the measurement results will be inaccurate. Therefore, when coiling, it is necessary not only to avoid twisting the cable, but also to keep the vent hole unobstructed, dry and clean.

[0004] A search revealed a winding mechanism and an immersion-type liquid level transmitter disclosed in patent application publication number CN220223023U. The mechanism includes a main body component comprising a support component, a power component connected to the support component, and a winding component connected to the power component; and an anti-winding component that allows the rotating rod to rotate while driving the winding drum to wind the device, and also drives the support block and guide ring to move back and forth. During the movement, the guide ring guides the wire of the monitoring device, thereby preventing it from winding around on the winding drum.

[0005] The aforementioned patent guides the wire of the monitoring device by setting a guide ring, and the motor winds it up. Although it can achieve the winding effect, there is a risk that the motor may wind it too tightly, squeezing the vent pipe and the vent hole may be covered by the cable. Utility Model Content

[0006] The purpose of this utility model is to provide a retractable submersible level transmitter. By setting an arc-shaped winding disc, several spirally rising arc-shaped plates are fixed on the outer wall of each winding disc to support each turn of cable. The vent pipe inside the cable will not be squeezed due to gravity. The winding disc allows for easy manual winding of the cable without the cable being wound too tightly. At the same time, each arc plate has a limiting groove at both ends, which can limit the vent pipe of the level transmitter within the limiting groove. The vent pipe is located at the top of the cable and will not be covered by the wound cable, thus ensuring unobstructed airflow.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a reel-type submersible level transmitter, comprising a base and a winding reel for winding the cable of the submersible level transmitter. The base has an expansion structure in the middle that can change the winding diameter of the winding reel. An arc-shaped plate that can support each turn of cable is fixed on the outer wall of the winding reel. Each arc-shaped plate has a limiting groove at both ends that can limit the outer wall of the cable. A vent pipe is provided at one end of the cable, and one end of the vent pipe is engaged in one of the limiting grooves.

[0008] Preferably, the winding discs are provided in three sets, and the three sets of winding discs are arranged in a circumferential array. The arc plate on one side of each set of winding discs is arranged in a spiral upward manner, and the arc plate is inclined relative to the winding disc.

[0009] Preferably, the limiting groove includes a through hole for a cable or vent pipe to pass through the arc-shaped plate, and the outer wall of the through hole is provided with a notch for the cable or vent pipe to be inserted, and the edge of each notch is provided with a rounded corner.

[0010] Preferably, the upper surface of the base is fixed with a limiting ring by screws to limit the cable of the submersible level transmitter near the probe end, and the limiting ring is C-shaped.

[0011] Preferably, the lowest end of the arc-shaped plate closest to the upper surface of the base is set as the initial winding end, and the limiting ring is located on one side of the initial winding end.

[0012] Preferably, the expansion structure includes an electric push rod, the telescopic end of which is fixedly connected to the center of the upper surface of the base by screws. The outer wall of the electric push rod and the side of the winding disc away from the arc plate are both fixed with connecting plates. Both sides of the connecting plates are provided with connecting rods, and the two ends of the connecting rods are rotatably connected to the side walls of the two sets of connecting plates respectively.

[0013] Preferably, the expansion structure further includes three sets of guide grooves formed on the upper surface of the base for limiting the winding disc. The three sets of guide grooves are arranged in a circumferential array. Each winding disc has a limit rod fixed at its bottom end, and the bottom end of the limit rod is slidably connected in the guide groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model provides independent support for each turn of cable by setting a spirally rising arc plate on the outer wall of each winding reel. This avoids the problem of the internal ventilation capillary being squeezed by gravity when the cables are stacked, and prevents the capillary from being flattened or deformed. In addition, the arc plate is inclined inward relative to the winding reel. When the cable is manually and freely coiled, the cable is automatically located on the side of the arc plate closer to the winding reel. There is no need to wind it tightly, and the cable will not fall off the winding reel.

[0016] 2. Each arc plate has a limiting groove at both ends, which can fix the vent outlet pipe or the outer wall of the cable. The vent outlet pipe at one end of the cable is always above the uppermost cable and will not be covered by the tangled cable, so that the external atmospheric pressure can be smoothly and unobstructedly transmitted to the sensor reference end, avoiding inaccurate liquid level measurement. Attached Figure Description

[0017] Figure 1 This is an isometric view of the cable coiled according to this utility model;

[0018] Figure 2 This is an isometric drawing of this utility model;

[0019] Figure 3 This is a schematic diagram showing the location of the cable and the internal vent pipe of the cable according to this utility model;

[0020] Figure 4 This is a partial exploded view of the expansion structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the guide groove of this utility model.

[0022] In the diagram: 1. Base; 2. Cable; 3. Winding disc; 4. Expansion structure; 5. Arc plate; 6. Limiting groove; 7. Vent outlet pipe; 601. Through hole; 602. Notch; 8. Limiting ring; 401. Electric push rod; 402. Connecting plate; 403. Connecting rod; 404. Guide groove; 405. Limiting rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 This utility model provides a technical solution: a retractable submersible level transmitter, including a base 1 and a winding reel 3 for winding the cable 2 of the submersible level transmitter. The base 1 is provided with an expansion structure 4 in the middle that can change the winding diameter of the winding reel 3. An arc-shaped plate 5 that can support each turn of the cable 2 is fixed on the outer wall of the winding reel 3. Each arc-shaped plate 5 is provided with a limiting groove 6 at both ends that can limit the outer wall of the cable 2. A vent pipe 7 is provided at one end of the cable 2, and one end of the vent pipe 7 is engaged in one of the limiting grooves 6.

[0025] The winding disc 3 is provided in three sets, and the three sets of winding disc 3 are arranged in a circular array. The arc plate 5 on one side of each set of winding disc 3 is arranged in a spiral upward manner, and the arc plate 5 is inclined relative to the winding disc 3.

[0026] The spiral structure ensures that the cable 2 can smoothly transition from one layer to the next during winding, achieving an orderly arrangement. Each spiraling, ascending arc-shaped plate 5 provides an independent support platform for each turn of cable 2 wound upon it. The cables 2 are not stacked on top of the lower cables 2, but rather laid separately on their respective arc-shaped plates 5. Because the layers of cables 2 are separated by the arc-shaped plates 5, the weight of the upper layer of cable 2 does not directly press on the lower layer of cable 2. Figure 1 As shown, the vent outlet pipe 7 is led out from the top and is locked in the upper limiting groove 6 of the cable 2 lead-out end to prevent the cable 2 from covering the opening of the vent outlet pipe 7 when it is wound.

[0027] The limiting groove 6 includes a through hole 601 through which the cable 2 or the vent pipe 7 passes through the arc plate 5. The outer wall of the through hole 601 is provided with a notch 602 for the cable 2 or the vent pipe 7 to be inserted. Each notch 602 has a rounded edge to reduce the risk of the cable 2 or the vent pipe being scratched or worn by sharp edges during insertion.

[0028] The through hole 601 provides space for the cable 2 itself or the vent outlet pipe 7 to pass through. The notch 602 is an opening at the edge of the through hole 601, allowing the user to laterally insert the cable 2 or the vent outlet pipe 7 into the through hole 601 without threading the cable through the end of the through hole 601.

[0029] The upper surface of the base 1 is fixed with screws to a limiting ring 8, which limits the cable 2 of the submersible level transmitter near the probe end. The limiting ring 8 is C-shaped. The cable 2 at the probe end of the submersible level transmitter is inserted into the C-shaped limiting ring 8. Both the limiting ring 8 and the arc plate 5 are made of POM material, which can deform slightly to facilitate the limiting of the cable 2 after insertion.

[0030] The lowest end of the arc-shaped plate 5, which is closest to the upper surface of the base 1, is set as the initial winding end, and the limiting ring 8 is located on one side of the initial winding end.

[0031] When the cable 2 is manually coiled, the cable 2 will naturally slide towards the lower side of the inner wall of the winding disc 3 under the action of gravity. It will be constrained by the outer edge of the winding disc 3, so that the cable 2 can be easily and freely coiled without being deliberately tightened. It can be naturally positioned and is not easy to slip off the arc plate 5.

[0032] The expansion structure 4 includes an electric push rod 401. The telescopic end of the electric push rod 401 is fixedly connected to the center of the upper surface of the base 1 by screws. The outer wall of the electric push rod 401 and the side of the winding disc 3 away from the arc plate 5 are both fixed with connecting plates 402. Both sides of the connecting plates 402 are provided with connecting rods 403. The two ends of the connecting rods 403 are rotatably connected to the side walls of the two sets of connecting plates 402 respectively.

[0033] The expansion structure 4 also includes three sets of guide grooves 404 formed on the upper surface of the base 1 for limiting the winding disc 3. The three sets of guide grooves 404 are arranged in a circumferential array. Each winding disc 3 has a limiting rod 405 fixed at its bottom end. The bottom end of the limiting rod 405 is slidably connected in the guide groove 404.

[0034] In use, the expansion structure 4 is expanded by starting the electric push rod 401. Specifically, when the electric push rod 401 shortens downward, it drives the connecting plate 402 fixed to it to move downward, forcing the connecting rod 403 of the connecting plate 402 to rotate. The connecting rod 403 pushes the connecting plate 402 of the winding disc 3 to move outward, and the limiting rod 405 slides outward along the guide groove 404, so that the three winding discs 3 expand outward synchronously, realizing the expansion structure 4. This structure is mainly used to reduce the volume of the entire winding device for easy storage.

[0035] Insert the cable 2 at one end of the submersible level transmitter probe into the C-shaped limiting ring 8;

[0036] Lead out the probe end cable 2 fixed in the limiting ring 8, and manually wind the cable 2 from the initial winding end along the spirally rising arc plate 5 layer by layer. Under the action of gravity, the cable 2 automatically attaches to the lower side of the inward inclination of the arc plate 5, without the need to deliberately tighten it.

[0037] When the winding is finished, insert the vent pipe 7 at the end of the cable 2 into a limiting groove 6 of the uppermost arc plate 5 to ensure that its opening is at the highest point and exposed.

[0038] The vent outlet pipe 7 is positioned higher than all the wound cables 2, and will not be covered, wrapped, or blocked by any of the wound cables 2. This ensures that the external atmosphere can be transmitted unimpeded and continuously through the vent outlet pipe 7 and the internal vent capillary to the reference end of the transmitter sensor, guaranteeing the accuracy of the gauge pressure measurement.

[0039] Compared to traditional winding equipment, this device can protect the vent pipe 7, preventing the vent pipe inside the cable 2 from being flattened.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A retractable submersible level transmitter, characterized in that: The device includes a base (1) and a winding reel (3) for winding a cable (2) for a submersible level transmitter. The base (1) has an expansion structure (4) in the middle that can change the winding diameter of the winding reel (3). The outer wall of the winding reel (3) is fixed with an arc plate (5) that can support each turn of the cable (2). Each arc plate (5) has a limiting groove (6) at both ends that can limit the outer wall of the cable (2). One end of the cable (2) is provided with a vent pipe (7), and one end of the vent pipe (7) is engaged in one of the limiting grooves (6).

2. The retractable submersible level transmitter according to claim 1, characterized in that: The winding disc (3) is provided in three sets, and the three sets of winding discs (3) are arranged in a circular array. The arc plate (5) on one side of each set of winding discs (3) is arranged in a spiral upward manner, and the arc plate (5) is inclined relative to the winding disc (3).

3. A retractable submersible level transmitter according to claim 2, characterized in that: The limiting groove (6) includes a through hole (601) through which a cable (2) or a vent pipe (7) passes through the arc plate (5). The outer wall of the through hole (601) is provided with a notch (602) for the cable (2) or the vent pipe (7) to be inserted. Each notch (602) has a rounded edge.

4. A retractable submersible level transmitter according to claim 3, characterized in that: The upper surface of the base (1) is fixed with a limiting ring (8) that limits the cable (2) of the submersible level transmitter near the probe end by screws. The limiting ring (8) is C-shaped.

5. A retractable submersible level transmitter according to claim 4, characterized in that: The lowest end of the arc plate (5) located closest to the upper surface of the base (1) is set as the initial winding end, and the limiting ring (8) is located on one side of the initial winding end.

6. A retractable submersible level transmitter according to claim 1, characterized in that: The expansion structure (4) includes an electric push rod (401). The telescopic end of the electric push rod (401) is fixedly connected to the center of the upper surface of the base (1) by screws. The outer wall of the electric push rod (401) and the side of the winding disc (3) away from the arc plate (5) are both fixed with connecting plates (402). Both sides of the connecting plate (402) are provided with connecting rods (403). The two ends of the connecting rods (403) are rotatably connected to the side walls of the two sets of connecting plates (402) respectively.

7. A retractable submersible level transmitter according to claim 6, characterized in that: The expansion structure (4) also includes three sets of guide grooves (404) formed on the upper surface of the base (1) for limiting the winding disc (3). The three sets of guide grooves (404) are arranged in a circumferential array. Each winding disc (3) has a limiting rod (405) fixed at its bottom end. The bottom end of the limiting rod (405) is slidably connected in the guide groove (404).

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