Sealing structure for liquid level transmitter

Abstract

The utility model discloses a sealing structure for a liquid level transmitter, and relates to the technical field of liquid level transmitters. The liquid level transmitter comprises a detection shell and a liquid level transmitter body, guide sleeves are symmetrically fixed to the top of the detection shell, movable pressing blocks are movably arranged in the guide sleeves in a penetrating mode, a limiting clamping groove is formed in the bottom of one end of each movable pressing block, and an installation groove is formed in the position, between the two guide sleeves, of the top of the detection shell. A first sealing ring is fixed to the bottom of the mounting groove. According to the liquid level transmitter, the mounting plate is clamped into the mounting groove, the movable pressing block is shifted to enable the limiting clamping column to be clamped into the limiting clamping groove, the mounting plate can be pressed and fixed through the movable pressing block, rapid mounting of the liquid level transmitter body is completed, operation is convenient and fast, and the liquid level transmitter can be conveniently and rapidly mounted through the first sealing ring and the second sealing ring. Double sealing of the joint between the detection shell and the mounting plate can be achieved, and the situation that the liquid level in the detection shell is too high and overflows from the joint between the detection shell and the mounting plate is effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid level transmitters, in particular to a sealing structure used for liquid level transmitters. Background Art

[0002] The float level transmitter consists of two parts: a liquid level sensor and a current converter. The float changes synchronously with the liquid level, controlling the reed switch to close and open, so that the resistance in the sensor changes linearly. The converter then converts the resistance change into a 4-20mA standard current signal and superimposes the digital signal output. It can display the medium level in an open, closed container or underground tank in the instrument control room. The detected medium can be conductive and non-conductive liquids such as water, oil, acid, alkali, industrial sewage, etc. It is widely used in industries such as oil refining, chemical, papermaking, food, and sewage treatment. After searching, the patent with application number 202021313407.7 discloses a sealing structure for a liquid level transmitter, including a detection shell, a protective shell, and a mounting plate fixed on the liquid level transmitter, a mounting seat is fixed on the detection shell, a first elastic sealing arc block is continuously provided on the mounting seat, a card groove matching with the mounting seat is provided on the protective shell, a second elastic sealing arc block is provided on the inner wall of the card groove to engage with the first elastic sealing arc block, a first fixing mechanism is provided between the protective shell and the detection shell, the first fixing mechanism includes a fixing seat fixed on the detection shell, and a connecting rod slidably connected to the side wall of the protective shell, a slide is fixed on the end of the connecting rod, a sliding groove matching with the slide is provided on the fixing seat, and a sliding opening connected with the sliding groove and matching with the connecting rod is provided on the fixing seat.

[0003] However, during actual use, the applicant found that when installing the liquid level transmitter, since the mounting plate and the protective shell are relatively independent, personnel are required to fix and install the mounting plate and the protective shell one by one, which is not convenient enough. In view of this, we propose a sealing structure for a liquid level transmitter. Utility Model Content

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a sealing structure for a liquid level transmitter, comprising a detection shell and a liquid level transmitter body, wherein a guide sleeve is symmetrically fixed on the top of the detection shell, a movable pressure block is movably arranged in the guide sleeve, a limit slot is arranged at the bottom of one end of the movable pressure block, a mounting slot is arranged on the top of the detection shell between two guide sleeves, a first sealing ring is fixed at the bottom of the mounting slot, a cylindrical slot is arranged on the detection shell below the mounting slot, a second sealing ring is fixed at the bottom of the cylindrical slot, and the top of the detection shell A guide sleeve is symmetrically fixed, and a mounting plate is sleeved and fixed on the liquid level transmitter body. The mounting plate is clamped in the mounting groove, and the mounting plate abuts on the first sealing ring. A cylindrical seat is fixedly provided at the bottom of the mounting plate, and the cylindrical seat is clamped in the cylindrical groove, and the cylindrical seat abuts on the second sealing ring. A limiting clamping column is symmetrically fixed on the top of the mounting plate, and the limiting clamping column is clamped in the limiting clamping groove. A transparent protective shell is sleeved on the upper part of the liquid level transmitter body, and the transparent protective shell is threadedly screwed on the threaded connection seat at the top of the mounting plate.

[0006] Preferably, an inclined groove is provided on the movable pressing block, and a U-shaped sliding bracket is movably connected to the top of the detection housing on the front side of the installation groove.

[0007] Preferably, inclined surfaces are symmetrically provided at both ends of the U-shaped slide, and the inclined surfaces slide along the inclined grooves.

[0008] Preferably, a limit sliding block is symmetrically arranged at the bottom of the U-shaped sliding frame, and the limit sliding block slides along a limit sliding groove opened on the top of the detection shell.

[0009] Preferably, a limit block is symmetrically fixedly provided on the top of the detection housing, and the limit block is close to the other end of the movable pressing block.

[0010] Preferably, a toggle portion is fixedly provided on the top of the movable pressing block, and the toggle portion abuts against the guide sleeve.

[0011] The utility model has the following beneficial effects:

[0012] The utility model discloses a sealing structure for a liquid level transmitter. The sealing structure connects a mounting plate and a transparent protective shell by means of threaded connection. During installation, the mounting plate is inserted into the mounting groove, and the movable pressure block is moved so that the limit clamping column is inserted into the limit clamping groove. The mounting plate can be pressed and fixed by the movable pressure block, so that the rapid installation of the liquid level transmitter body is completed. The operation is convenient. The first sealing ring and the second sealing ring are provided, so that the double sealing of the connection between the detection shell and the mounting plate can be achieved, and the excessive liquid level inside the detection shell can be effectively prevented from overflowing from the connection between the detection shell and the mounting plate. The transparent protective shell is manually pressed downward to drive the limit clamping column to move out of the limit clamping groove, and the U-shaped slide is manually moved toward the liquid level transmitter body. The inclined surface and the inclined groove can be cooperated to drive one end of the two movable pressure blocks to be synchronously moved away from the top of the mounting plate, so that the liquid level transmitter body can be quickly disassembled from the detection shell, so that the disassembly of the liquid level transmitter body can be more rapid. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of a sealing structure for a liquid level transmitter according to the utility model;

[0015] Figure 2 This is a structural schematic diagram of a mounting plate and a liquid level transmitter in a sealing structure for a liquid level transmitter of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a sealing structure for a liquid level transmitter according to the utility model after the liquid level transmitter and the U-shaped slide are removed from the detection housing;

[0017] Figure 4 This is a structural schematic diagram of a movable pressure block in a sealing structure for a liquid level transmitter according to the utility model;

[0018] Figure 5 The utility model is a structural schematic diagram of a U-shaped slide in a sealing structure used for a liquid level transmitter.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Detection housing; 11. Guide sleeve; 12. Limit block; 13. Mounting groove; 14. Cylindrical groove; 15. Limit slide groove; 2. Mounting plate; 21. Cylindrical seat; 22. Limit clamping column; 23. Threaded connection seat; 3. Transparent protective shell; 4. Level transmitter body; 5. Movable pressure block; 51. Toggle part; 52. Limit clamping groove; 53. Inclined groove; 6. U-shaped slide; 61. Inclined surface; 62. Limit slide block; 7. First sealing ring; 8. Second sealing ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 As shown, the utility model provides a technical solution:

[0023] Embodiment 1: A sealing structure for a liquid level transmitter, comprising a detection housing 1 and a liquid level transmitter body 4, a guide sleeve 11 is symmetrically fixed on the top of the detection housing 1, a movable pressure block 5 is movably provided in the guide sleeve 11, a limit slot 52 is provided at the bottom of one end of the movable pressure block 5, a limit block 12 is symmetrically fixed on the top of the detection housing 1, the limit block 12 is close to the other end of the movable pressure block 5, the limit block 12 is used to limit the movable pressure block 5 to prevent the movable pressure block 5 from slipping out of the guide sleeve 11, a toggle portion 51 is fixed on the top of the movable pressure block 5, the toggle portion 51 abuts against the guide sleeve 11, the toggle portion 51 can facilitate personnel to toggle the movable pressure block 5, and can also position the movable pressure block 5, so that The limit card slot 52 can be moved to the top of the limit card column 22. The top of the detection housing 1 between the two guide sleeves 11 is provided with a mounting slot 13. The bottom of the mounting slot 13 is fixed with a first sealing ring 7. The detection housing 1 below the mounting slot 13 is provided with a cylindrical slot 14. The bottom of the cylindrical slot 14 is fixed with a second sealing ring 8. The top of the detection housing 1 is symmetrically fixed with a guide sleeve 11. The mounting plate 2 is sleeved and fixed on the liquid level transmitter body 4. The mounting plate 2 is clamped in the mounting slot 13, and the mounting plate 2 abuts on the first sealing ring 7. The bottom of the mounting plate 2 is fixedly provided with a cylindrical seat 21, which is clamped in the cylindrical slot 14, and the cylindrical seat 21 abuts on the second sealing ring 8. Through the first sealing ring 7 and the second sealing ring 8, it can be realized The double seal at the connection between the detection housing 1 and the mounting plate 2 is now carried out to effectively prevent the liquid level inside the detection housing 1 from overflowing from the connection between the detection housing 1 and the mounting plate 2 due to being too high. The top of the mounting plate 2 is symmetrically fixed with a limit clamping column 22, and the limit clamping column 22 is stuck in the limit clamping groove 52. By making the limit clamping column 22 stuck in the limit clamping groove 52, the mounting plate 2 can be effectively pressed and fixed by the movable pressing block 5, so as to realize the rapid sealing installation of the liquid level transmitter body 4, and the operation is convenient. The upper part of the liquid level transmitter body 4 is sleeved with a transparent protective shell 3, and the transparent protective shell 3 is threadedly screwed on the threaded connection seat 23 at the top of the mounting plate 2. The liquid level transmitter body 4 can be protected by the transparent protective shell 3. Separated from the external environment, when installing the liquid level transmitter body 4, you can hold the transparent protective shell 3, align the mounting plate 2 and snap it into the mounting groove 13, at this time, the cylindrical seat 21 can be snapped into the cylindrical groove 14, and then manually squeeze the mounting plate 2 downward to make the mounting plate 2 abut against the first sealing ring 7, and make the cylindrical seat 21 abut against the second sealing ring 8, then manually dial the dial part 51 to drive one end of the movable pressure block 5 to move to the top of the mounting plate 2, and make the dial part 51 abut against the guide sleeve 11, and then release the transparent protective shell 3. At this time, under the self-deformation of the first sealing ring 7 and the second sealing ring 8, the limit card column 22 on the top of the mounting plate 2 can be driven to snap into the limit card groove 52, so that the liquid level transmitter body 4 can be quickly installed.At this time, the first sealing ring 7 is still effectively abutted against the bottom of the mounting plate 2, and the second sealing ring 8 is still effectively abutted against the bottom of the columnar seat 21, thereby achieving double sealing of the connection between the detection housing 1 and the mounting plate 2.

[0024] Embodiment 2: The difference between this embodiment and embodiment 1 is that, an inclined groove 53 is provided on the movable pressure block 5, and a U-shaped slide 6 is movably connected to the top of the detection housing 1 on the front side of the mounting groove 13. Inclined surfaces 61 are symmetrically provided at both ends of the U-shaped slide 6. The inclined surfaces 61 slide along the inclined groove 53. When the U-shaped slide 6 moves toward the liquid level transmitter body 4, the two movable pressure blocks 5 can be driven to move away from the top of the mounting plate 2 synchronously through the cooperation of the inclined surfaces 61 and the inclined groove 53, so that personnel can quickly disassemble the liquid level transmitter body 4. The bottom of the U-shaped slide 6 is symmetrically provided with a limit slider 62. The limit slider 62 slides along the limit slide groove 15 opened on the top of the detection shell 1, and is used to realize the limit guide of the U-shaped slide 6. When the liquid level transmitter body 4 needs to be disassembled, the transparent protective shell 3 can be pressed downward manually to drive the mounting plate 2 to move downward, so that the limit card column 22 is moved out of the limit card groove 52. At this time, the U-shaped slide 6 is manually moved toward the liquid level transmitter body 4, and the inclined surface 61 and the inclined groove 53 can cooperate to drive one end of the two movable pressure blocks 5 to move away from the top of the mounting plate 2 at the same time. At this time, the liquid level transmitter body 4 can be quickly removed from the top of the detection shell 1.

[0025] Working principle: When using, when installing the liquid level transmitter body 4, you can hold the transparent protective shell 3, align the mounting plate 2 and snap it into the mounting groove 13, at this time, the cylindrical seat 21 can be snapped into the cylindrical groove 14, and then manually squeeze the mounting plate 2 downward to make the mounting plate 2 abut against the first sealing ring 7, and make the cylindrical seat 21 abut against the second sealing ring 8, then manually dial the dial part 51 to drive one end of the movable pressure block 5 to move to the top of the mounting plate 2, and make the dial part 51 abut against the guide sleeve 11, and then release the transparent protective shell 3. At this time, under the self-deformation of the first sealing ring 7 and the second sealing ring 8, the limit card column 22 on the top of the mounting plate 2 can be driven to snap into the limit card groove 52, and the liquid level transmitter body can be adjusted. The body 4 is quickly installed. At this time, the first sealing ring 7 is still effectively abutted against the bottom of the mounting plate 2, and the second sealing ring 8 is still effectively abutted against the bottom of the columnar seat 21, so as to realize double sealing of the connection between the detection shell 1 and the mounting plate 2. When it is necessary to disassemble the liquid level transmitter body 4, the transparent protective shell 3 can be pressed downward manually to drive the mounting plate 2 to move downward, so that the limit card column 22 is moved out of the limit card groove 52. At this time, the U-shaped slide 6 is manually moved toward the liquid level transmitter body 4, and the inclined surface 61 and the inclined groove 53 can be cooperated to drive one end of the two movable pressure blocks 5 to be moved away from the top of the mounting plate 2 at the same time. At this time, the liquid level transmitter body 4 can be quickly disassembled from the top of the detection shell 1.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments and any equivalent replacement of some of the technical features therein are within the protection scope of the present invention.

Claims

1. A sealing structure for a liquid level transmitter, comprising a detection housing (1) and a liquid level transmitter body (4), Features: A guide sleeve (11) is symmetrically fixed on the top of the detection housing (1), a movable pressure block (5) is movably provided in the guide sleeve (11), a limit slot (52) is provided at the bottom of one end of the movable pressure block (5), a mounting slot (13) is provided on the top of the detection housing (1) between the two guide sleeves (11), a first sealing ring (7) is fixed at the bottom of the mounting slot (13), a cylindrical slot (14) is provided on the detection housing (1) below the mounting slot (13), a second sealing ring (8) is fixed at the bottom of the cylindrical slot (14), the guide sleeve (11) is symmetrically fixed on the top of the detection housing (1), and the level transmitter body (4) is provided with a plurality of sealing rings (7) on the bottom of the detection housing (1). A mounting plate (2) is sleeved and fixed, the mounting plate (2) is clamped in the mounting groove (13), and the mounting plate (2) abuts against the first sealing ring (7), a columnar seat (21) is fixedly provided at the bottom of the mounting plate (2), the columnar seat (21) is clamped in the columnar groove (14), and the columnar seat (21) abuts against the second sealing ring (8), a limit clamping column (22) is symmetrically fixedly provided at the top of the mounting plate (2), the limit clamping column (22) is clamped in the limit clamping groove (52), and a transparent protective shell (3) is sleeved on the upper part of the liquid level transmitter body (4), and the transparent protective shell (3) is threadedly screwed on the threaded connection seat (23) at the top of the mounting plate (2).

2. A sealing structure for a liquid level transmitter according to claim 1, It is characterized in that The movable pressing block (5) is provided with an inclined groove (53), and the top of the detection housing (1) on the front side of the installation groove (13) is movably connected to a U-shaped sliding bracket (6).

3. A sealing structure for a liquid level transmitter according to claim 2, It is characterized in that Inclined surfaces (61) are symmetrically arranged at both ends of the U-shaped slide (6), and the inclined surfaces (61) slide along the inclined groove (53).

4. A sealing structure for a liquid level transmitter according to claim 3, It is characterized in that A limit slide block (62) is symmetrically arranged at the bottom of the U-shaped slide frame (6), and the limit slide block (62) slides along a limit slide groove (15) provided at the top of the detection housing (1).

5. A sealing structure for a liquid level transmitter according to claim 1, It is characterized in that A limit block (12) is symmetrically fixedly disposed on the top of the detection housing (1), and the limit block (12) is close to the other end of the movable pressing block (5).

6. A sealing structure for a liquid level transmitter according to claim 1, It is characterized in that A toggle portion (51) is fixedly provided on the top of the movable pressing block (5), and the toggle portion (51) abuts against the guide sleeve (11).

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