Liquid level sensor with protection structure

Abstract

The invention provides a liquid level sensor with a protection structure, and relates to a liquid level sensor structure, which comprises a telescopic module and an adjusting module for assisting the telescopic module to perform automatic telescopic adjustment and positioning after adjustment, the telescopic module comprises a first end sleeve used for installing a sensor body, a second end sleeve used for installing a motor and at least two sets of middle sleeves located between the first end sleeve and the second end sleeve, the first end sleeve, the middle sleeves and the second end sleeve form telescopic structures which are sequentially connected in a sleeved mode from outside to inside, and the first end sleeve, the middle sleeves and the second end sleeve are sleeved bodies of the telescopic structures. And the adjusting module comprises a motor, a mounting plate, a linear guide groove, an arc-shaped guide groove and a guide rail, and the guide rail is positioned on the mounting plate through an adjusting rod. The device can be unfolded to the required length through simple and automatic operation, and the occupied space in the immersing and taking-out process is reduced.

Description

Technical Field

[0001] The invention relates to a liquid level sensor structure, in particular to a liquid level sensor with a protective structure. Background Art

[0002] A liquid level sensor (static pressure level gauge / liquid level transmitter / liquid level sensor / water level sensor) is a pressure sensor that measures liquid level. A liquid level sensor with a protective structure is an industrial measuring device with enhanced protection performance through a special design. Its core function is to ensure the accuracy of liquid level measurement and the reliability of the equipment in complex or harsh environments. Existing liquid level sensors, such as the patented marine liquid level sensor with a protective structure (Announcement No. CN215573214U), generally have a fixed connection in their protective structure to form a shell of a specific length. When a greater immersion depth is required, the protective shell forming the protective structure will also be extended. However, the extension adjustment of the protective structure is generally a manual operation, which is time-consuming and labor-intensive. Moreover, when the extended length is long, it is time-consuming and labor-intensive to immerse or remove the sensor, and it is also more prone to bumps, which may even affect the use effect. Summary of the Invention

[0003] The object of the present invention is to provide a liquid level sensor with a protective structure. In view of the problems of existing liquid level sensors with protective structures such as inconvenient operation, time-consuming and labor-intensive operation, and easy bumping when immersed at a large depth, a design of modular combination of protective structures is adopted. At the same time, the modular combination units can also be automatically positioned and telescopically adjusted, so that the protective structure remains compact in the non-working state, which is convenient for storage and transportation. At the same time, when working, it can be expanded to the required length through simple automated operations, thereby reducing the space occupied during immersion and removal.

[0004] The present invention provides the following technical solutions:

[0005] A liquid level sensor with a protective structure includes a telescopic module for mounting the sensor body and an adjustment module for assisting the telescopic module in performing automatic telescopic adjustment and positioning after adjustment.

[0006] The telescopic module includes an end sleeve 1 for mounting the sensor body, an end sleeve 2 for mounting the motor, and at least two sets of intermediate sleeves located between the end sleeve 1 and the end sleeve 2. The end sleeve 1, the intermediate sleeve, and the end sleeve 2 form a telescopic structure that is sequentially sleeved from the outside to the inside. The end sleeve 1, the intermediate sleeve, and the end sleeve 2 are all sleeve bodies of the telescopic structure. The two adjacent sleeve bodies are threadedly connected. At least one set of sliders is also provided outside the end sleeve 1 and the intermediate sleeve.

[0007] The adjustment module includes a motor connected to the second end sleeve drive, a mounting plate for positioning the motor, and a linear guide groove for slidingly engaging with the slider. The end of the linear guide groove is further connected through an arc guide groove. The arc guide groove is vertically distributed with the linear guide groove, and the axis of the arc guide groove is concentric with the rotation center of the motor. The linear guide groove and the arc guide groove are provided on a set of guide rails, and the guide rails are positioned on the mounting plate by an adjustment rod.

[0008] At this point, if the telescopic module is initially in the retracted position, if an extension operation is to be performed so that the sensor body is positioned at a certain liquid level, the height of the guide rail can be fine-tuned first, so that the slider on the middle sleeve is within the circumference of the arc guide groove, and the slider on the end sleeve one is within the linear guide groove. When the motor drives the end sleeve two to rotate, it will drive the middle sleeve to rotate circumferentially along the arc guide groove. Since the linear guide groove is a linear guide for the end sleeve one, the end sleeve one will be driven to rotate spirally around a group of adjacent middle sleeves, that is, the end sleeve one moves linearly along the linear guide groove under the driving force of the thread. Similarly, when it is necessary to drive a group of middle sleeves to extend, the height of the guide rail can be fine-tuned first, so that the slider on the outside of the middle sleeve is within the linear guide groove, and then By driving the motor to rotate, the intermediate sleeve can be driven to rotate in two spirals around the intermediate sleeve or end sleeve of its inner ring, that is, the intermediate sleeve performs linear motion along the linear guide groove under the drive of the thread; when the telescopic module performs the extension operation, it is only necessary to start the motor or adjust the height of the guide rail to achieve the positioning after the sensor body is extended to any height, that is, after positioning, external impact will not cause the sensor component to swing or extend, and the stability is better. When it is necessary to restore the initial contraction position for subsequent storage and transportation, it is only necessary to rotate the motor in the opposite direction until all the sliders are retracted to the circumference of the arc guide groove. At this time, the maximum contraction operation can be completed. After the contraction operation is completed, the guide rail can be removed from the mounting plate to improve the compactness of the overall storage.

[0009] Preferably, the connection terminals of the sensor body are encapsulated in a set of encapsulation shells, and the detection end thereof extends out of the encapsulation shells for liquid level detection. The encapsulation shells are connected to the end of the end sleeve through a sealing plate. At this point, the connection wires of the sensor body extend through the encapsulation shells through the sealing plate to the telescopic structure. The telescopic structure can protect the connection wires, and the encapsulation shells can also provide certain peripheral protection for the sensor body.

[0010] Preferably, a group of telescopic rods extending axially along the telescopic structure are also installed on the sealing plate. When the telescopic structure is fully expanded, the sleeves of the telescopic rods are placed one by one in a group of intermediate sleeves or end sleeves, and the outermost sleeve of the telescopic rod corresponds to the end sleeve. A group of rings are also fixed at the end of each sleeve section, and a group of shift rods are also provided at the ends of the intermediate sleeve and the end sleeve. The shift rods are blocked and limited on the side of the ring close to the sensor body, and the shift rods on the end sleeve are fixedly connected to the corresponding rings. The end of the outermost sleeve of the telescopic rod extending out of the sealing plate is also provided with a group of shift rings outside the sealing plate. At this point, when the end sleeve and the intermediate sleeve make a linear motion along the linear guide groove under the action of the spiral driving force to extend into place, they can be limited by the shift ring or the collar to avoid transition spiral disjoint of the sleeve body of the telescopic structure.

[0011] Preferably, when the telescopic rod is retracted, an embedding groove for embedding a ring adjacent to and close to one end of the sensor body is further provided in the middle of the gear rod of the end sleeve 2 and the middle sleeve. The diameters of the rings distributed from the sensor body to the direction of the motor increase in sequence. Therefore, when the extension operation is performed, since the rings are embedded in the embedding grooves, the order of extension and retraction is always from the outside to the inside in sequence. At the same time, when the outer layer is extended, the inner rotation dislocation will not occur, so the extension stability is also better.

[0012] Preferably, the intermediate sleeves are provided in two groups.

[0013] Preferably, two groups of sliders are provided outside the end sleeve 1 and the middle sleeve, and the sliders outside the end sleeve 1 and the middle sleeve are symmetrically distributed in two rows, and the guide rails are two groups corresponding to the two rows of sliders.

[0014] Preferably, two sets of through slots opening outward are provided on the mounting plate, and the adjusting rod drives the guide rail to be placed into the through slot through the notch of the through slot, and is locked and installed by the locking nuts locked on both sides of the mounting plate. At this point, when the guide rail needs to be removed, it is only necessary to loosen the locking nut and pull the guide rail outward to complete the separation from the slider.

[0015] Preferably, the driving end of the motor is connected to the end of the second end sleeve through a flange.

[0016] The beneficial effects of the present invention are as follows: the liquid level sensor with a protective structure provided by the present invention addresses the problems of inconvenient operation, time-consuming and labor-intensive operation, and susceptibility to bumping when the existing liquid level sensors with protective structures are immersed at a large depth. The protective structure is modularly assembled, and the modular assembled units can also be automatically positioned and telescopically adjusted. This allows the protective structure to remain compact in a non-operating state, making it easy to store and transport. At the same time, when in operation, the protective structure can be expanded to a desired length through simple automated operations, reducing space occupied during immersion and removal.

[0017] In a liquid level sensor with a protective structure of the present invention, if the telescopic module is initially in the retracted position, if an extension operation is to be performed so that the sensor body is positioned at a certain liquid level height, the height of the guide rail can be fine-tuned first, so that the slider on the intermediate sleeve is within the circumference of the arc guide groove, and the slider on the end sleeve one is within the linear guide groove. When the motor drives the end sleeve two to rotate, it will drive the intermediate sleeve to rotate circumferentially along the arc guide groove. Since the linear guide groove is a linear guide for the end sleeve one, the end sleeve one will be driven to rotate spirally around a group of intermediate sleeves adjacent to it, that is, the end sleeve one performs linear motion along the linear guide groove under the driving force of the thread. Similarly, when it is necessary to drive a group of intermediate sleeves to extend, the height of the guide rail can be fine-tuned first so that the slider on the outer side of the intermediate sleeve is In the linear guide groove, the motor is driven to rotate, which can drive the intermediate sleeve to rotate around the intermediate sleeve or end sleeve of its inner ring in two spirals, that is, the intermediate sleeve performs linear motion along the linear guide groove under the drive of the thread; when the telescopic module performs the extension operation, it is only necessary to start the motor or adjust the height of the guide rail to achieve the positioning after the sensor body is extended to any height, that is, after positioning, external impact will not cause the sensor component to swing or extend, and the stability is better. When it is necessary to restore the initial contraction position for subsequent storage and transportation, it is only necessary to rotate the motor in the opposite direction until all the sliders are retracted to the circumference of the arc guide groove. At this time, the maximum contraction operation can be completed, and after the contraction operation is completed, the guide rail is removed from the mounting plate to improve the compactness of the overall storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a cross-sectional view of the structure of the telescopic module of the present invention when it is in the retracted position;

[0020] Figure 2 yes Figure 1 A cross-sectional view of the structure of the end sleeve extending out of the middle;

[0021] Figure 3 is based on Figure 2 Continue to stretch out a set of structural cross-sectional views of the middle sleeve;

[0022] Figure 4 This is a cross-sectional view of the structure of the telescopic module of the present invention when it is fully extended;

[0023] Figure 5 It is a side view of the guide rail;

[0024] Figure 6 It is a top-down cross-sectional view of the two sets of guide rails facing each other;

[0025] Figure 7 is a top view of the mounting plate;

[0026] Markings in the figure:

[0027] 1. Sensor body; 2. Telescopic module; 3. Adjustment module; 4. Package shell; 5. Closing plate; 6. Telescopic rod; 21. End sleeve 1; 22. End sleeve 2; 23. Intermediate sleeve; 24. Slider; 25. Gear lever; 26. Embedded groove; 31. Motor; 32. Mounting plate; 33. Linear guide groove; 34. Arc guide groove; 35. Guide rail; 36. Adjustment rod; 37. Through groove; 38. Lock nut; 39. Flange; 61. Sleeve; 62. Ring; 63. Retaining ring. DETAILED DESCRIPTION

[0028] Example 1

[0029] like Figure 1-7 As shown, a liquid level sensor with a protective structure, in this embodiment, includes a telescopic module 2 for mounting a sensor body 1 and an adjustment module 3 for assisting the telescopic module 2 in performing automatic telescopic adjustment and positioning after adjustment.

[0030] The telescopic module 2 includes an end sleeve 21 for mounting the sensor body 1, an end sleeve 22 for mounting the motor 31, and at least two sets of intermediate sleeves 23 located between the end sleeve 21 and the end sleeve 22. The end sleeve 21, the intermediate sleeve 23, and the end sleeve 22 form a telescopic structure that is sequentially sleeved from the outside to the inside. The end sleeve 21, the intermediate sleeve 23, and the end sleeve 22 are all sleeve bodies of the telescopic structure. The two adjacent sleeve bodies are threadedly connected. At least one set of sliders 24 is also provided outside the end sleeve 21 and the intermediate sleeve 23.

[0031] The adjustment module 3 includes a motor 31 drivingly connected to the end sleeve 22, a mounting plate 32 for positioning the motor 31, and a linear guide groove 33 for slidingly engaging with the slider 24. The end of the linear guide groove 33 is further connected to an arcuate guide groove 34. The arcuate guide groove 34 is perpendicular to the linear guide groove 33, and the axis of the arcuate guide groove 34 is concentric with the rotation center of the motor 31. The linear guide groove 33 and the arcuate guide groove 34 are provided on a set of guide rails 35, which are positioned on the mounting plate 32 by an adjustment rod 36.

[0032] At this point, if the telescopic module 2 is initially in the retracted position, if an extension operation is to be performed so that the sensor body 1 is positioned at a certain liquid level, the height of the guide rail 35 can be fine-tuned first, so that the slider 24 on the intermediate sleeve 23 is within the circumference of the arc guide groove 34, and the slider 24 on the end sleeve 1 21 is within the linear guide groove 33. When the motor 31 drives the end sleeve 22 to rotate, the intermediate sleeve 23 will be driven to rotate circumferentially along the arc guide groove 34. Since the linear guide groove 33 is a linear guide for the end sleeve 1 21, the end sleeve 1 21 will be driven to rotate spirally around a group of adjacent intermediate sleeves 23. That is, the end sleeve 1 21 performs linear motion along the linear guide groove 33 under the driving force of the thread. Similarly, when it is necessary to drive a group of intermediate sleeves 23 to extend, the height of the guide rail 35 can be fine-tuned first, so that the slider 24 on the outer side of the intermediate sleeve 23 is in the linear guide groove 33. The linear guide groove 33 is then driven by the motor 31 to rotate, which can drive the intermediate sleeve 23 to spirally rotate around the intermediate sleeve 23 or the end sleeve 22 of its inner circle, that is, the intermediate sleeve 23 performs linear motion along the linear guide groove 33 under the drive of the thread; when the telescopic module 2 performs the extension operation, it is only necessary to start the motor 31 or adjust the height of the guide rail 35 to realize the positioning after the sensor body 1 is extended to any height, that is, after positioning, external impact will not cause the sensor component to swing or extend, and the stability is better. When it is necessary to restore the initial contraction position for subsequent storage and transportation, it is only necessary to rotate the motor 31 in the opposite direction until all the sliders 24 are retracted to the circumference of the arc guide groove 34. At this time, the maximum contraction operation can be completed, and after the contraction operation is completed, the guide rail 35 is removed from the mounting plate 32 to improve the compactness of the overall storage.

[0033] Example 2

[0034] A liquid level sensor with a protective structure. In this embodiment, it is a further limitation based on Example 1. The wiring terminals of the sensor body 1 are encapsulated in a set of encapsulation shells 4, and its detection end extends out of the encapsulation shells 4 to detect the liquid level. The encapsulation shells 4 are sealed and connected to the end of the end sleeve 21 through a sealing plate 5. At this point, the connecting wires of the sensor body 1 extend through the encapsulation shells 4 and the sealing plate 5 into the telescopic structure. The telescopic structure can protect the connecting wires. At the same time, the encapsulation shells 4 can also provide certain peripheral protection for the sensor body 1.

[0035] The sealing plate 5 is also provided with a set of telescopic rods 6 extending along the axial direction of the telescopic structure. When the telescopic structure is fully extended, the sleeves 61 of the telescopic rods 6 are placed one by one in a set of intermediate sleeves 23 or end sleeves 21, and the outermost sleeves 61 of the telescopic rods 6 correspond to the end sleeves 21. A set of collars 62 are fixed to the ends of each sleeve 61. A set of levers 25 are also provided at the ends of the intermediate sleeves 23 and the end sleeves 22. The levers 25 are respectively blocked and limited at the collars 62. On one side of the sensor body 1, the shift rod 25 on the end sleeve 22 is fixedly connected to the corresponding collar 62. The end of the outermost sleeve 61 of the telescopic rod 6 extending out of the sealing plate 5 is also provided with a set of blocking rings 63 that are limited outside the sealing plate 5. At this point, when the end sleeve 1 21 and the middle sleeve 23 make a linear motion along the linear guide groove 33 under the action of the spiral driving force and extend into place, they can be limited by the blocking ring 63 or the collar 62 to avoid transition spiral disjointness of the sleeve body of the telescopic structure.

[0036] When the telescopic rod 6 is retracted, an embedding groove 26 is further provided in the middle of the gear rod 25 of the end sleeve 22 and the middle sleeve 23 for embedding an adjacent ring 62 close to one end of the sensor body 1. The diameters of the rings 62 distributed from the sensor body 1 to the direction of the motor 31 are increased in sequence. Therefore, when the extension operation is performed, since the rings 62 are embedded in the embedding grooves 26, the order of extension and retraction is always from the outside to the inside in sequence. At the same time, when the outer layer is extended, the inner rotation dislocation will not occur, so the extension stability is also better.

[0037] The intermediate sleeves 23 are provided in two groups.

[0038] Two groups of sliders 24 are provided outside the end sleeve 21 and the middle sleeve 23 , and the sliders 24 outside the end sleeve 21 and the middle sleeve 23 are symmetrically distributed in two straight rows, and the guide rails 35 are divided into two groups corresponding to the two rows of sliders 24 .

[0039] Two sets of through slots 37 opening outward are formed on the mounting plate 32. The adjusting rod 36 drives the guide rail 35 to be placed into the through slot 37 through the notch of the through slot 37 and is locked and installed by the locking nuts 38 locked on both sides of the mounting plate 32. At this point, when it is necessary to remove the guide rail 35, it is only necessary to loosen the locking nuts 38 and pull the guide rail 35 outward to complete the separation from the slider 24.

[0040] The driving end of the motor 31 is connected to the end of the second end sleeve 22 through a flange 39 .

[0041] The working principle of the present invention is as follows: The beneficial effects of the present invention are as follows: The liquid level sensor with a protective structure provided by the present invention addresses the problems of inconvenient operation, time-consuming and labor-intensive operation, and easy bumping when the existing liquid level sensors with protective structures are immersed at a large depth. The protective structure is modularly assembled, and the modular assembled units can also be automatically positioned and telescopically adjusted, so that the protective structure remains compact in the non-operating state, which is convenient for storage and transportation. At the same time, when in operation, it can be expanded to the required length through simple automated operations, reducing the space occupied during immersion and removal.

[0042] In a liquid level sensor with a protective structure of the present invention, if the telescopic module 2 is initially in the retracted position, if an extension operation is to be performed so that the sensor body 1 is positioned at a certain liquid level height, the height of the guide rail 35 can be fine-tuned first, so that the slider 24 on the intermediate sleeve 23 is within the circumference of the arc guide groove 34, and the slider 24 on the end sleeve 1 21 is within the linear guide groove 33. When the motor 31 drives the end sleeve 22 to rotate, it will drive the intermediate sleeve 23 to rotate circumferentially along the arc guide groove 34. Since the linear guide groove 33 is a linear guide for the end sleeve 1 21, the end sleeve 1 21 will be driven to rotate spirally around a group of intermediate sleeves 23 adjacent to it, that is, the end sleeve 1 21 performs linear motion along the linear guide groove 33 under the driving force of the thread. Similarly, when it is necessary to drive a group of intermediate sleeves 23 to extend, the height of the guide rail 35 can be fine-tuned first so that the outer side of the intermediate sleeve 23 The slider 24 is in the linear guide groove 33, and then the motor 31 is driven to rotate, which can drive the intermediate sleeve 23 to spirally rotate around the intermediate sleeve 23 or the end sleeve 22 of its inner circle, that is, the intermediate sleeve 23 performs linear motion along the linear guide groove 33 under the drive of the thread; when the telescopic module 2 performs the extension operation, it is only necessary to start the motor 31 or adjust the height of the guide rail 35 to achieve the positioning after the sensor body 1 is extended to any height, that is, after positioning, external impact will not cause the sensor component to swing or extend, and the stability is better. When it is necessary to restore the initial contraction position for subsequent storage and transportation, it is only necessary to rotate the motor 31 in the opposite direction until all the sliders 24 are retracted to the circumference of the arc guide groove 34. At this time, the maximum contraction operation can be completed, and after the contraction operation is completed, the guide rail 35 is removed from the mounting plate 32 to improve the compactness of the overall storage.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A liquid level sensor with a protective structure, characterized in that: It includes a telescopic module for installing the sensor body and an adjustment module for assisting the telescopic module to perform automatic telescopic adjustment and positioning after adjustment. The telescopic module includes an end sleeve 1 for mounting the sensor body, an end sleeve 2 for mounting the motor, and at least two sets of intermediate sleeves located between the end sleeve 1 and the end sleeve 2. The end sleeve 1, the intermediate sleeve, and the end sleeve 2 form a telescopic structure that is sequentially sleeved from the outside to the inside, and the end sleeve 1, the intermediate sleeve, and the end sleeve 2 are all sleeve bodies of the telescopic structure. The two adjacent sets of sleeve bodies are threadedly connected. At least one set of sliders is also provided outside the end sleeve 1 and the intermediate sleeve. The adjustment module includes a motor driven by the second end sleeve, a mounting plate for positioning the motor, and a linear guide groove for slidingly engaging with the slider. The end of the linear guide groove is also connected through an arc guide groove. The arc guide groove and the linear guide groove are vertically distributed, and the axis of the arc guide groove is concentric with the rotation center of the motor. The linear guide groove and the arc guide groove are opened on a set of guide rails, and the guide rails are positioned on the mounting plate through an adjusting rod.

2. The liquid level sensor with a protective structure according to claim 1, characterized in that: The connection terminal of the sensor body is encapsulated in a set of encapsulation shells, and the detection end thereof extends out of the encapsulation shells to detect the liquid level. The encapsulation shells are sealed and connected to the end of the end sleeve 1 through a sealing plate.

3. The liquid level sensor with a protective structure according to claim 2, characterized in that: The sealing plate is also provided with a group of telescopic rods extending axially along the telescopic structure. When the telescopic structure is fully expanded, the sleeves of the telescopic rods are placed one by one in a group of intermediate sleeves or end sleeves, and the outermost sleeve of the telescopic rod corresponds to the end sleeve. A group of rings are fixed to the end of each sleeve, and a group of shift rods are also provided at the ends of the intermediate sleeve and the end sleeve 2. The shift rods are respectively blocked and limited on the side of the ring close to the sensor body, and the shift rods on the end sleeve 2 are fixedly connected to the corresponding rings. The end of the outermost sleeve of the telescopic rod extending out of the sealing plate is also provided with a group of shift rings limited outside the sealing plate.

4. The liquid level sensor with a protective structure according to claim 3, characterized in that: When the telescopic rod is retracted, the middle part of the gear rod of the end sleeve 2 and the middle sleeve is also provided with an embedding groove for embedding the adjacent ring close to one end of the sensor body, and the diameter size of the ring distributed from the sensor body to the motor increases successively.

5. The liquid level sensor with a protective structure according to claim 1, characterized in that: The intermediate sleeves are provided in two groups.

6. The liquid level sensor with a protective structure according to claim 5, characterized in that: Two groups of sliders are arranged outside the end sleeve 1 and the middle sleeve, and the sliders outside the end sleeve 1 and the middle sleeve are symmetrically distributed in two rows of straight lines, and the guide rails are two groups corresponding to the two rows of sliders.

7. The liquid level sensor with a protective structure according to claim 6, characterized in that: The mounting plate is provided with two groups of through slots opening outwards, and the adjusting rod drives the guide rail to be placed into the through slots through the notches of the through slots, and is locked and installed by locking nuts locked on both sides of the mounting plate.

8. The liquid level sensor with a protective structure according to claim 1, characterized in that: The driving end of the motor is connected to the end of the second end sleeve through a flange.

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