Optical fiber liquid level detector

Abstract

The utility model relates to the technical field of liquid level detectors, in particular to an optical fiber liquid level detector which comprises a sliding rail, a lead screw is rotationally connected to the sliding rail, a sliding block is connected to the lead screw in a threaded mode, the sliding block is slidably connected with the sliding rail, a fixing plate is fixedly connected to the sliding block, a mounting rod is slidably connected to the fixing plate, and the mounting rod is fixedly connected to the sliding rail. A lantern ring is fixedly connected to the end of the mounting rod, a liquid level sensor is mounted in the lantern ring, and a limiting structure is mounted on the fixing plate. The liquid level sensor is mounted on the sliding block through the mounting structure, and the sliding block is controlled by the screw rod to slide, so that the mounting depth of the liquid level sensor is flexibly adjusted, the operation is simple and convenient, and the data detected by the liquid level sensor is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a liquid level detector, concretely is a kind of optical fiber liquid level detector, belongs to liquid level detector technical field. BACKGROUND

[0002] Optical fiber liquid level detector is a kind of high-precision instrument using optical fiber technology to measure liquid level, is widely used in the liquid level, reserve detection of various containers in petroleum, chemical industry, electric power, food and other industrial departments and auxiliary facilities, and the working principle of optical fiber liquid level detector is to use intensity modulation type optical fiber total internal reflection principle, when liquid level sensor is in air, infrared light beam emitted by infrared emitting diode propagates downward along incident optical fiber, total internal reflection occurs in conical body and returns to light receiver, when liquid level sensor contacts liquid surface, due to the difference between liquid refractive index and air, total internal reflection is destroyed, part of light transmits into liquid, resulting in the light intensity returned to light receiver weak, by monitoring the change of return light intensity, whether the measuring head contacts liquid level can be judged, and liquid level height is calculated accordingly.

[0003] However, optical fiber liquid level monitor is used in different environments, and the installation depth of its sensor is different, so the installation depth of liquid level sensor needs to be adjusted according to actual situation to ensure the accuracy of detection data, but the sensor of traditional optical fiber liquid level detector is usually placed directly in the liquid area to be detected, so that the installation depth of the sensor is not flexible and convenient, and the accuracy needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of optical fiber liquid level detectors, and the purpose is to solve the above problems and provide a kind of optical fiber liquid level detector, liquid level sensor is installed on slider by installation structure, then slider is controlled to slide by screw rod, so that the installation depth of liquid level sensor is flexibly adjusted, it is simple and convenient to operate, so that the data detected by liquid level sensor is more accurate.

[0005] The utility model discloses a kind of optical fiber liquid level detectors by the following technical scheme to realize the above-mentioned purpose, including slide rail, the adjusting structure is installed on the slide rail, the adjusting structure includes screw rod, the slide rail is rotatably connected with screw rod, the screw rod is threadedly connected with slider, the slider is slidably connected with slide rail, the slider is installed with installation structure, the installation structure includes fixed plate, the slider is fixedly connected with fixed plate, the fixed plate is slidably connected with mounting rod, the end of the mounting rod is fixedly connected with thimble, the thimble is installed with liquid level sensor, limit structure is installed on the fixed plate.

[0006] Preferably, the slide groove on the slide rail is trapezoidal structure, and the slider is trapezoidal structure.

[0007] Preferably, the top end of the sliding rail is provided with a waterproof motor, and an output shaft of the waterproof motor is fixedly connected with the lead screw.

[0008] Preferably, the mounting rod is in an overall "L" shape structure, and one end of the mounting rod in the fixed plate is in a "T" shape structure.

[0009] Preferably, the side wall of the sliding rail is linearly provided with three fixing rings, and the same electric wire is slidably connected in the three fixing rings, and the end of the electric wire is fixedly connected with the liquid level sensor.

[0010] Preferably, the limiting structure comprises a clamping block, the clamping block is slidably connected with the fixed plate, and a clamping groove is formed in the mounting rod, and the end of the clamping block is clamped in the clamping groove.

[0011] Preferably, a spring is fixedly connected between the clamping block and the inner wall of the fixed plate, and a groove is formed in the clamping block.

[0012] Preferably, a sliding plate is mounted at the top end of the clamping block, and the sliding plate is slidably connected with the fixed plate.

[0013] Preferably, two mounting plates are fixedly connected on the two sides of the sliding rail, and the four mounting plates are symmetrically distributed.

[0014] The beneficial effects of the utility model are that: the sliding rail is rotatably connected with the lead screw, the lead screw is threadedly connected with the sliding block, the sliding block is slidably connected with the sliding rail, the fixed plate is fixedly connected with the sliding block, the mounting rod is slidably connected with the fixed plate, the end of the mounting rod is fixedly connected with the sleeve ring, and the liquid level sensor is installed in the sleeve ring; the liquid level sensor is installed on the sliding block through the mounting structure, and then the sliding block is controlled to slide by the lead screw, so that the installation depth of the liquid level sensor is flexibly adjusted, the operation is simple and convenient, and the data detected by the liquid level sensor is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic view of the utility model;

[0016] Figure 2 It is the connecting structure schematic view of the lead screw and the sliding block of the utility model;

[0017] Figure 3 It is the connecting structure schematic view of the fixed plate and the mounting rod of the utility model;

[0018] Figure 4 It is Figure 3 The enlarged structure schematic view of A part shown in the figure;

[0019] Figure 5 It is the connecting structure schematic view of the lead screw and the sliding rail of the utility model.

[0020] In the figure: 1, slide rail; 2, adjusting structure; 201, screw rod; 202, sliding block; 203, waterproof motor; 3, mounting structure; 301, fixed plate; 302, mounting rod; 303, collar; 304, fixed ring; 4, limiting structure; 401, clamping block; 402, clamping groove; 403, spring; 404, groove; 405, sliding plate; 5, liquid level sensor; 6, electric wire; 7, mounting plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-5 As shown in the figure, a kind of optical fiber liquid level detector, including slide rail 1, adjusting structure 2 is installed on the slide rail 1, the adjusting structure 2 includes screw rod 201, the slide rail 1 is rotatably connected with screw rod 201, the screw rod 201 is threadedly connected with sliding block 202, the sliding block 202 is slidably connected with slide rail 1, the sliding block 202 is installed with mounting structure 3, the mounting structure 3 includes fixed plate 301, the sliding block 202 is fixedly connected with fixed plate 301, the fixed plate 301 is slidably connected with mounting rod 302, the end of mounting rod 302 is fixedly connected with collar 303, liquid level sensor 5 is installed in the collar 303, limiting structure 4 is installed on the fixed plate 301.

[0023] As a kind of technical optimization scheme of the utility model, the slide groove on the slide rail 1 is trapezoidal structure, the sliding block 202 is trapezoidal structure, the mounting rod 302 is overall "L" shape structure, and the end of the mounting rod 302 in the fixed plate 301 is "T" shape structure;The stability of mounting rod 302 is increased by the setting of "T" shape structure, the stability of sliding block 202 is increased, and sliding block 202 is avoided from sliding off from slide rail 1.

[0024] As a kind of technical optimization scheme of the utility model, waterproof motor 203 is installed at the top of slide rail 1, and the output shaft of waterproof motor 203 is fixedly connected with screw rod 201;Screw rod 201 is driven to rotate by waterproof motor 203, so that the operation of screw rod 201 is more efficient.

[0025] As a technical optimization scheme of the utility model, the side wall linear array of the slide rail 1 is equipped with three fixed rings 304, one wire 6 is slidably connected in the three fixed rings 304, and the end of the wire 6 is fixedly connected to the liquid level sensor 5; the fixed ring 304 has the effect of accommodating and arranging the wire 6, avoiding the wire 6 from being wound on the slide rail 1 during the movement of the liquid level sensor 5.

[0026] As a technical optimization scheme of the utility model, the limiting structure 4 includes a clamping block 401, the clamping block 401 is slidably connected to the fixed plate 301, a clamping groove 402 is formed in the mounting rod 302, the end of the clamping block 401 is clamped in the clamping groove 402, a spring 403 is fixedly connected between the clamping block 401 and the inner wall of the fixed plate 301, and a recess 404 is formed in the clamping block 401; the mounting rod 302 is clamped into the fixed plate 301, the side wall of the mounting rod 302 abuts against the clamping block 401 to slide away from the mounting rod 302 during clamping, the clamping block 401 slides while abutting against the spring 403 to contract, the spring 403 resets when the clamping groove 402 on the mounting rod 302 is aligned with the clamping block 401, and the spring 403 drives the clamping block 401 to be clamped into the clamping groove 402, so that the mounting rod 302 cannot slide upward any more, the stability of the mounting rod 302 is improved, the liquid level sensor 5 is mounted on the fixed plate 301 through the mounting rod 302 and the sleeve ring 303, the stability of the liquid level sensor 5 is further improved, and the liquid level sensor 5 is prevented from moving randomly along the water flow direction; when the liquid level sensor 5 needs to be dismounted, the hexagonal wrench is inserted into the recess 404, the hexagonal wrench is pushed away from the mounting rod 302, the hexagonal wrench drives the clamping block 401 to slide out of the clamping groove 402, so that the mounting rod 302 is released, the dismounting of the liquid level sensor 5 is quickly completed, the operation is simple and convenient, and the mounting and dismounting of the liquid level sensor 5 are convenient and flexible.

[0027] As a technical optimization scheme of the utility model, the top end of the clamping block 401 is provided with a sliding plate 405, and the sliding plate 405 is slidably connected to the fixed plate 301; the clamping block 401 drives the sliding plate 405 at the top end to slide during movement, the sliding plate 405 is arranged to shield the clamping block 401 and the spring 403, and underwater impurities are prevented from entering the fixed plate 301, so that the underwater impurities do not affect the use of the clamping block 401 and the spring 403.

[0028] As a technical optimization scheme of the utility model, the two sides of the slide rail 1 are fixedly connected with two mounting plates 7, and the four mounting plates 7 are symmetrically distributed left and right; the slide rail 1 is mounted at a specified position by using bolts and the four mounting plates 7, and the mounting plates 7 are arranged to facilitate the mounting of the slide rail 1, so that the slide rail 1 is fixed.

[0029] In use, the liquid level sensor 5 is first engaged in the collar 303, and then the collar 303 is fixed with bolts. Next, the wire 6 connected to the liquid level sensor 5 is sequentially threaded through the three fixing rings 304. The fixing rings 304 serve to organize and store the wire 6, preventing it from getting tangled on the slide rail 1 during the movement of the liquid level sensor 5. Then, the mounting rod 302 is engaged in the fixing plate 301. During engagement, the side wall of the mounting rod 302 slides away from the mounting rod 302, abutting against the locking block 401. Simultaneously, the locking block 401 retracts, resisting the spring 403. When the slot 402 on the rod 302 aligns with the locking block 401, the spring 403 resets, driving the locking block 401 to engage in the slot 402, thus preventing the mounting rod 302 from sliding upwards. This increases the stability of the mounting rod 302. Furthermore, the mounting rod 302 and the collar 303 together mount the level sensor 5 onto the fixing plate 301, further enhancing the stability of the level sensor 5 and preventing it from moving arbitrarily with the water flow direction. When it is necessary to disassemble the level sensor 5, insert the hexagonal wrench into the groove 404 and push the hexagonal wrench away from the mounting rod 302. A hexagonal wrench drives the locking block 401 to slide out of the slot 402, thereby releasing the fixing of the mounting rod 302 and quickly completing the disassembly of the liquid level sensor 5. The operation is simple and convenient, making the installation and disassembly of the liquid level sensor 5 convenient and flexible. During the movement of the locking block 401, the sliding plate 405 at its top slides. The sliding plate 405 can shield the locking block 401 and the spring 403, preventing underwater impurities from entering the fixing plate 301, thereby preventing underwater impurities from affecting the use of the locking block 401 and the spring 403. Then, bolts are used to install the slide rail 1 with the four mounting plates 7. The mounting plate 7 is installed in the designated position, which facilitates the installation of the slide rail 1 and fixes the slide rail 1. When it is necessary to further adjust the installation depth of the liquid level sensor 5 according to the actual situation, the waterproof motor 203 (model 42HS34) is started. The output shaft of the waterproof motor 203 drives the lead screw 201 to rotate. The lead screw 201 drives the slider 202 to slide on the slide rail 1, so that the slider 202 drives the liquid level sensor 5 to move through the mounting structure 3. This allows the installation depth of the liquid level sensor 5 to be adjusted flexibly in real time, making the measurement data of the liquid level sensor 5 more accurate.

[0030] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0031] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. An optical fiber liquid level detector comprising a slide rail (1), characterized in that: The slide rail (1) is provided with an adjusting structure (2), the adjusting structure (2) comprises a lead screw (201), the slide rail (1) is rotationally connected with the lead screw (201), the lead screw (201) is threadedly connected with a sliding block (202), the sliding block (202) is slidably connected with the slide rail (1), the sliding block (202) is provided with a mounting structure (3), the mounting structure (3) comprises a fixed plate (301), the sliding block (202) is fixedly connected with the fixed plate (301), the fixed plate (301) is slidably connected with a mounting rod (302), the mounting rod (302) is fixedly connected with a thimble (303) at one end, the thimble (303) is provided with a liquid level sensor (5), and the fixed plate (301) is provided with a limiting structure (4).

2. The optical fiber liquid level detector according to claim 1, wherein: The slide groove on the slide rail (1) is in a trapezoidal structure, and the sliding block (202) is also in a trapezoidal structure.

3. The optical fiber liquid level detector according to claim 1, wherein: The top end of the slide rail (1) is provided with a waterproof motor (203), and the output shaft of the waterproof motor (203) is fixedly connected with the lead screw (201).

4. The optical fiber liquid level detector according to claim 1, wherein: The mounting rod (302) is in an overall "L" shape structure, and one end of the mounting rod (302) in the fixed plate (301) is in a "T" shape structure.

5. The optical fiber liquid level detector according to claim 3, wherein: The side wall of the slide rail (1) is linearly provided with three fixed rings (304), and the same wire (6) is slidably connected in the three fixed rings (304), and the end of the wire (6) is fixedly connected with the liquid level sensor (5).

6. The optical fiber liquid level detector of claim 1, wherein: The limiting structure (4) comprises a clamping block (401), the fixed plate (301) is slidably connected with the clamping block (401), and the mounting rod (302) is provided with a clamping groove (402).

7. A fiber optic liquid level detector according to claim 6, wherein: The clamping block (401) and the inner wall of the fixed plate (301) are fixedly connected with a spring (403), and the clamping block (401) is provided with a groove (404).

8. A fiber optic liquid level detector according to claim 7, wherein: The top end of the clamping block (401) is provided with a sliding plate (405), and the sliding plate (405) is slidably connected with the fixed plate (301).

9. The optical fiber liquid level detector of claim 1, wherein: Both sides of the slide rail (1) are fixedly connected with two mounting plates (7), and the four mounting plates (7) are symmetrically distributed.

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