Probe mounting structure of capacitive liquid level meter

Abstract

The utility model relates to the technical field of liquid level meters, and discloses a probe mounting structure of a capacitive liquid level meter, which comprises a protective outer cover, a connecting cylinder is fixedly mounted at the bottom of the protective outer cover, a conductive column and a connecting cover are arranged at one end, far away from the protective outer cover, of the connecting cylinder, and the connecting cover and the connecting cylinder are mounted in a threaded manner. And a locking assembly is fixedly mounted on the outer side of the connecting cover. According to the probe installation structure of the capacitive liquid level meter, through the design that the protruding block and the first groove are in sliding connection, the guiding effect can be achieved when the probe is installed, so that rapid installation of the probe is achieved, rapid locking of the probe is achieved through cooperation of the buckle on the fixing cover and the locking assembly, the stability of the device is improved, and when the probe needs to be maintained, the probe can be conveniently and rapidly installed. The fixing cover can be quickly disassembled only by pressing the elastic block until the buckle slides out of the fixing seat, so that a maintainer can take down the probe rod to check whether the resistance value of the probe rod meets the standard or not, and the maintainer can conveniently maintain the probe rod.

Description

Technical Field

[0001] This utility model relates to the field of liquid level gauge technology, specifically to a probe mounting structure for a capacitive liquid level gauge. Background Technology

[0002] Capacitive level gauges operate on the principle of capacitance induction. When the measured medium rises above the measuring electrode, a change in capacitance occurs, converting the change in the level of various materials and liquids into a standard current signal. This signal is then transmitted to the control room for centralized display, alarm, or automatic control by secondary instruments or computer devices. The gauge measures the liquid level by measuring changes in capacitance. It consists of a metal rod inserted into the liquid container, acting as one electrode of a capacitor, with the container wall as the other. The medium between the electrodes is the liquid and the gas above it. Because the dielectric constant ε1 of the liquid differs from the dielectric constant ε2 of the liquid surface... For example, if ε1 > ε2, then when the liquid level rises, the total dielectric constant between the two electrodes of the capacitive level gauge increases accordingly, thus increasing the capacitance. Conversely, when the liquid level falls, the ε value decreases, and the capacitance also decreases. Therefore, the capacitive level gauge can measure the liquid level by the change in capacitance between the two electrodes. The sensitivity of the capacitive level gauge mainly depends on the difference between the two dielectric constants. Moreover, only when ε1 and ε2 are constant can the accuracy of the liquid level measurement be guaranteed. Because the measured medium is conductive, the metal rod electrodes are covered with an insulating layer. The capacitive level gauge is small in size, easy to remotely transmit and adjust, and suitable for measuring the liquid level of corrosive and high-pressure media.

[0003] Chinese Utility Model Patent Publication No. CN 209727213 U discloses a capacitive level gauge connection mechanism. This mechanism involves placing an installation ring on the outside of the connector. If the inner diameter of the semi-circular structure is smaller than the outer diameter of the connector, the nut can be tightened to expand the abutment plate, increasing the inner diameter of the semi-circular structure until the installation ring is placed on the outside of the connector. The elasticity of the first spring provides a compressive force to the abutment plate, ensuring a secure connection between the installation ring and the connector. The elasticity of the first spring allows for an adjustable range between the abutment plate and the installation ring, making it suitable for various types of level gauge bodies and offering a wide range of applications. However, when fixing the probe, this capacitive level gauge connection mechanism requires locking the fixing component with a nut, thereby locking the position of the abutment plate. External tools are needed for fixing during installation, making the process relatively cumbersome. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a probe mounting structure for a capacitive level gauge, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: a probe mounting structure for a capacitive level gauge, including a protective cover, a connecting cylinder fixedly installed at the bottom of the protective cover, a conductive post and a connecting cover provided at the end of the connecting cylinder away from the protective cover, the connecting cover and the connecting cylinder being threaded together, a locking component fixedly installed on the outer side of the connecting cover, a protrusion fixedly installed on the inner wall of the connecting cover, a probe provided on the inner side of the connecting cover, a transmission groove provided at the center of the top of the probe, a groove provided on the outer side of the top of the probe, a fixing cover provided on the side of the probe away from the protective cover, a buckle provided on the outer side of the fixing cover, and a slot provided on the side of the buckle near the locking component.

[0006] Preferably, both sides of the protective cover are threaded with LED meters and rotary knobs, and the top of the protective cover is provided with an electrical interface.

[0007] The above technical solution allows for easy rotation of the LED meter and rotating head, facilitating the inspection of internal electronic components, by connecting the LED meter and rotating head to the protective cover via threaded installation. Furthermore, the inclusion of an electrical interface facilitates the provision of power to the equipment.

[0008] Preferably, the locking assembly includes a fixed base, a circular base plate, a return spring, a spring block, and a protective railing. The fixed base is fixedly installed on the outer surface of the connecting cover. The circular base plate is fixedly installed on the side of the fixed base away from the connecting cover. The return spring is fixedly installed on the side of the circular base plate away from the fixed base. The spring block is fixedly installed on the end of the return spring away from the circular base plate. A protective railing is provided on the side of the fixed base away from the connecting cover.

[0009] The above technical solution incorporates a locking component, which facilitates rapid locking of the probe to prevent it from falling off during testing. Furthermore, it allows installation workers to lock the probe without the need for external tools, thus improving installation efficiency.

[0010] Preferably, the buckle and the fixing seat have the same cross-section, the buckle and the fixing seat are plugged in, the slot and the spring block have the same cross-section, the slot and the spring block are snapped in, and the second groove and the probe are slidably connected.

[0011] The above technical solution, through the design of plug-in installation of the buckle and the fixed base, allows the buckle to be inserted into the inner side of the fixed base. The buckle is installed by the snap-fit ​​between the spring block and the slot, and with the help of the return spring, when the top of the buckle contacts the spring block, the spring block squeezes the return spring inward until the spring block snaps into the slot, and the return spring returns to its original position, thus quickly locking the buckle. The second groove is slidably connected to the probe, which can fix the probe when the fixed cover is installed, improving the stability of the device.

[0012] Preferably, the locking components are provided in two identical sets, and the two sets of locking components are symmetrically distributed on the outer surface of the connecting cover.

[0013] By using the above technical solution and setting two sets of identical locking components, the stability during installation can be improved, and the probe can be fixed by cooperating with the buckle when the probe is installed.

[0014] Preferably, the protrusion and the groove are slidably connected, and both the protrusion and the groove are provided with two identical sets. The protrusions are symmetrically distributed along the center line of the connecting cover, and the top center line of the probe of the groove is symmetrically distributed. The two sets of protrusions correspond one-to-one with the two sets of grooves.

[0015] The above technical solution uses a sliding connection between the protrusion and the groove, and both the protrusion and the groove are provided with two identical sets, which can play a guiding role when installing the probe, thereby facilitating the installation of the probe, reducing the installation difficulty and improving the installation efficiency.

[0016] Preferably, the conductive post and the transmission groove have the same cross-section, and the conductive post and the transmission groove are connected by plug-in joint.

[0017] The above technical solution uses a plug-in connection between the conductive post and the transmission groove. When the probe is installed, the transmission groove and the conductive post correspond to each other, which facilitates the transmission of capacitance information to the capacitive level sensor.

[0018] Compared with the prior art, this utility model provides a probe mounting structure for a capacitive level gauge, which has the following advantages:

[0019] 1. The probe mounting structure of this capacitive level gauge features a snap-fit ​​design that allows for insertion into the mounting base. The snap-fit ​​is inserted into the inner side of the mounting base and then engaged with the slot by a spring block. A return spring ensures that when the top of the snap-fit ​​contacts the spring block, the spring block compresses the return spring, causing it to move inward until the spring block engages with the slot. The return spring then returns to its original position, providing a quick locking effect on the snap-fit. The probe is slidably connected to the groove, allowing for fixation of the probe when the mounting cover is installed, thus improving the stability of the device. When probe maintenance is required, simply press the spring block until the snap-fit ​​slides out of the mounting base to quickly remove the mounting cover. This allows maintenance personnel to remove the probe and check its resistance value for compliance, facilitating maintenance.

[0020] 2. The probe mounting structure of this capacitive level gauge, through the sliding connection design of the protrusion and the groove, can guide the probe during installation, thereby achieving rapid installation of the probe. In addition, with the matching of the conductive post and the transmission groove, the capacitance information can be transmitted to the capacitive level sensor, reducing the installation difficulty and improving the installation efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the installation structure of the connecting cover and connecting cylinder of this utility model;

[0024] Figure 4 This is a schematic diagram of the installation structure of the probe and connecting cover of this utility model;

[0025] Figure 5 This is a schematic diagram of the connection structure of the buckle and locking assembly of this utility model;

[0026] Figure 6 This is a schematic diagram of the locking component structure of this utility model;

[0027] Figure 7 This is a schematic diagram of the probe structure of this utility model;

[0028] Figure 8 This is a schematic diagram of the fixed cover structure of this utility model.

[0029] The components include: 1. Protective cover; 2. LED meter head; 3. Rotary head; 4. Electrical interface; 5. Connecting cylinder; 6. Conductive post; 7. Connecting cover; 8. Locking assembly; 801. Fixing base; 802. Circular base plate; 803. Return spring; 804. Spring block; 805. Protective railing; 9. Protrusion; 10. Probe; 11. Transmission groove; 12. Groove one; 13. Fixing cover; 14. Buckle; 15. Slot; 16. Groove two. Detailed Implementation

[0030] 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.

[0031] Example 1: As Figure 1-8As shown, the present invention provides a probe mounting structure for a capacitive level gauge, including a protective cover 1. A connecting cylinder 5 is fixedly installed at the bottom of the protective cover 1. A conductive post 6 and a connecting cover 7 are provided at the end of the connecting cylinder 5 away from the protective cover 1. The connecting cover 7 and the connecting cylinder 5 are threaded together. A locking component 8 is fixedly installed on the outer side of the connecting cover 7. A protrusion 9 is fixedly installed on the inner wall of the connecting cover 7. A probe 10 is provided on the inner side of the connecting cover 7. A transmission groove 11 is provided at the center of the top of the probe 10. A groove 12 is provided on the outer side of the top of the probe 10. A fixing cover 13 is provided on the side of the probe 10 away from the protective cover 1. A buckle 14 is provided on the outer side of the fixing cover 13. A slot 15 is provided on the side of the buckle 14 near the locking component 8.

[0032] Specifically, LED meters 2 and rotary heads 3 are threadedly installed on both sides of the protective cover 1, and an electrical interface 4 is provided on the top of the protective cover 1. The advantage is that the threaded installation of LED meters 2 and rotary heads 3 with the protective cover 1 makes it easy to rotate LED meters 2 and rotary heads 3, which facilitates the inspection of internal electronic components. The electrical interface 4 facilitates the provision of power for the equipment to work.

[0033] Specifically, the locking assembly 8 includes a fixed base 801, a circular base plate 802, a return spring 803, a spring block 804, and a protective railing 805. The fixed base 801 is fixedly installed on the outer surface of the connecting cover 7. The circular base plate 802 is fixedly installed on the side of the fixed base 801 away from the connecting cover 7. The return spring 803 is fixedly installed on the side of the circular base plate 802 away from the fixed base 801. The spring block 804 is fixedly installed on the end of the return spring 803 away from the circular base plate 802. The protective railing 805 is provided on the side of the fixed base 801 away from the connecting cover 7. The advantage is that the locking assembly 8 facilitates the quick locking of the probe 10, preventing the probe 10 from falling off during testing. At the same time, the staff can lock the probe 10 without the need for external tools during installation, which improves the installation efficiency.

[0034] Specifically, the buckle 14 and the fixed base 801 have the same cross-section and are plugged into each other. The slot 15 and the spring block 804 have the same cross-section and are snapped together. The second groove 16 and the probe 10 are slidably connected. The advantage is that by plugging the buckle 14 into the fixed base 801, the buckle 14 can be inserted into the inside of the fixed base 801. By snapping the spring block 804 into the slot 15, and with the help of the return spring 803, when the top of the buckle 14 contacts the spring block 804, the spring block 804 squeezes the return spring 803 inward until the spring block 804 snaps into the slot 15, and the return spring 803 returns to its original position, thus quickly locking the buckle 14. By slidably connecting the second groove 16 to the probe 10, the probe 10 can be fixed when the fixed cover 13 is installed, improving the stability of the device.

[0035] Example 2: Figure 2-8 As shown, this is an improvement on the previous embodiment.

[0036] Specifically, the locking components 8 are provided in two identical sets, which are symmetrically distributed on the outer surface of the connecting cover 7. The advantage is that by providing two identical sets of locking components 8, the stability during installation can be improved, and the probe 10 can be fixed by cooperating with the buckle 14 when the probe 10 is installed.

[0037] Specifically, the protrusion 9 and the groove 12 are slidably connected. Both the protrusion 9 and the groove 12 are provided with two identical sets. The protrusion 9 is symmetrically distributed along the center line of the connecting cover 7, and the groove 12 is symmetrically distributed along the top center line of the probe 10. The two sets of protrusion 9 and the two sets of groove 12 correspond one-to-one. The advantage is that by making the protrusion 9 and the groove 12 slidably connected, and by providing two identical sets of protrusion 9 and groove 12, a guiding function can be achieved when installing the probe 10, thereby facilitating the installation of the probe 10, reducing the installation difficulty and improving the installation efficiency.

[0038] Specifically, the conductive post 6 and the transmission groove 11 have the same cross-section, and the conductive post 6 and the transmission groove 11 are plugged in. The advantage is that by plugging in the conductive post 6 and the transmission groove 11, when the probe 10 is installed, the transmission groove 11 corresponds to the conductive post 6, which facilitates the transmission of capacitance information to the capacitive level sensor.

[0039] Working Principle: During use, the LED meter head 2 and the rotating head 3 are threadedly installed onto the protective cover 1, facilitating the rotation of the LED meter head 2 and the rotating head 3. This allows for quick assembly and disassembly of the LED meter head 2 and the rotating head 3, facilitating the inspection of internal electronic components. An electrical interface 4 provides power to the equipment. The connecting cover 7 and the connecting cylinder 5 are threaded together, allowing for initial fixing. A sliding connection is then established between the protrusion 9 and the groove 12. Both the protrusion 9 and the groove 12 have two identical sets, serving as a guide for the installation of the probe 10, thus facilitating its rapid installation. Subsequently, the conductive post 6 is inserted into the transmission groove 11. When the probe 10 is installed, the transmission groove 11 aligns with the conductive post 6, facilitating the transmission of capacitance information to the capacitive level sensor. Furthermore, the buckle 14 and the fixing base 801 are designed for plug-in installation. The buckle 14 can be inserted into the inside of the fixing base 801 and installed by the snap-fit ​​between the spring block 804 and the slot 15. With the help of the return spring 803, when the top of the buckle 14 contacts the spring block 804, the spring block 804 squeezes the return spring 803 and moves inward until the spring block 804 snaps into the slot 15. The return spring 803 then returns to its original position, which can quickly lock the buckle 14. The groove 16 is slidably connected to the probe 10, which can fix the probe 10 when the fixing cover 13 is installed. At the same time, when the probe 10 needs to be maintained, the fixing cover 13 can be quickly disassembled by simply pressing the spring block 804 until the buckle 14 slides out of the fixing base 801. This allows the maintenance personnel to remove the probe 10 and check whether its resistance value is compliant, which is convenient for maintenance personnel to maintain it.

[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 probe mounting structure for a capacitance type liquid level meter comprising a protective cover (1), characterized in that: The bottom of the protective cover (1) is fixedly provided with a connecting cylinder (5), one end of the connecting cylinder (5) away from the protective cover (1) is provided with a conductive column (6) and a connecting cover (7), the connecting cover (7) is threadedly connected with the connecting cylinder (5), the outer side of the connecting cover (7) is fixedly provided with a locking assembly (8), the inner wall of the connecting cover (7) is fixedly provided with a protruding block (9), the inner side of the connecting cover (7) is provided with a probe (10), the top of the probe (10) is provided with a transmission groove (11) in the middle, the top of the probe (10) is provided with a groove (12) on the outer side, the side of the probe (10) away from the protective cover (1) is provided with a fixing cover (13), the outer side of the fixing cover (13) is provided with a buckle (14), the side of the buckle (14) close to the locking assembly (8) is provided with a clamping groove (15), the inside of the fixing cover (13) is provided with a groove (16) in the middle.

2. A probe mounting structure for a capacitance type liquid level meter according to claim 1, characterized in that: The two sides of the protective cover (1) are threadedly provided with LED surface heads (2) and rotating twist heads (3), and the top of the protective cover (1) is provided with an electrical interface (4).

3. A probe mounting structure for a capacitance type liquid level meter according to claim 1, characterized in that: The locking assembly (8) comprises a fixed seat (801), a circular bottom plate (802), a reset spring (803), a elastic block (804) and a protection fence (805), the outer surface of the connecting cover (7) is fixedly provided with the fixed seat (801), the side of the fixed seat (801) away from the connecting cover (7) is fixedly provided with the circular bottom plate (802), the side of the circular bottom plate (802) away from the fixed seat (801) is fixedly provided with the reset spring (803), one end of the reset spring (803) away from the circular bottom plate (802) is fixedly provided with the elastic block (804), and the side of the fixed seat (801) away from the connecting cover (7) is provided with the protection fence (805).

4. A probe mounting structure for a capacitance type liquid level meter according to claim 3, characterized in that: The cross section of the buckle (14) is same as that of the fixed seat (801), the buckle (14) is insertedly connected with the fixed seat (801), the cross section of the clamping groove (15) is same as that of the elastic block (804), the clamping groove (15) is buckledly connected with the elastic block (804), and the groove (16) is slidably connected with the probe (10).

5. The probe mounting structure for a capacitance type liquid level meter according to claim 1, characterized in that: The locking assembly (8) is provided with two groups of same locking assemblies, and the two groups of locking assemblies are symmetrically distributed on the outer surface of the connecting cover (7).

6. A probe mounting structure for a capacitance type liquid level meter according to claim 1, characterized in that: The protruding block (9) is slidably connected with the groove (12), the protruding block (9) and the groove (12) are provided with two groups of same protruding blocks and grooves, the protruding block (9) is symmetrically distributed on the center line of the connecting cover (7), the groove (12) is symmetrically distributed on the top center line of the probe (10), and the two groups of protruding blocks (9) correspond to the two groups of grooves (12).

7. The probe mounting structure for a capacitance type liquid level meter according to claim 1, characterized in that: The cross section of the conductive column (6) is same as that of the transmission groove (11), and the conductive column (6) is insertedly connected with the transmission groove (11).

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