Waterproof pressure transmitter

Abstract

The utility model relates to the technical field of pressure transmitters, in particular to a waterproof pressure transmitter. According to the technical scheme, the gauge comprises a gauge outfit, an installation column is fixed to the bottom of the gauge outfit, a detection head is fixed to the bottom of the installation column, the gauge outfit comprises a gauge shell body, a front cover and a rear cover, the front cover and the rear cover are in threaded connection to the front end and the rear end of the gauge shell body respectively, and outer extending sleeves are fixed to the peripheries of the ends, close to each other, of the front cover and the rear cover; the two sides of the upper end of the meter shell body are fixedly provided with connector lugs, the two ends of the connector lugs are fixedly provided with insertion columns, the insertion columns are rotatably connected with rotating sleeves, and the rotating sleeves are of a right-angle structure. According to the utility model, the outer extending sleeve is arranged at the joint of the front cover and the rear cover of the meter shell main body, water spots can be prevented from entering a meter head from a threaded connection gap, and the rotatable right-angle rotating sleeve is arranged at the connector lug, so that after the pressure transmitter is installed, the installation orientation of a wiring outlet can be changed, the opening of the wiring outlet is downward, and the risk of water inflow is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure transmitters, in particular to a waterproof pressure transmitter. Background Art

[0002] A pressure transmitter is a device used to measure, convert and output pressure signals. It is commonly used in industrial automation control systems to convert the physical quantity of pressure into an electrical signal for display, recording or control. Pressure transmitters are widely used in industries such as chemical, petroleum, metallurgy, electric power, food and pharmaceuticals.

[0003] Since the pressure transmitter is equipped with a circuit structure and internal water ingress will directly cause a short circuit, affecting the normal operation of the equipment, it is particularly important to waterproof the pressure transmitter. Common water ingress is mainly caused by the poor sealing of the protective cover on the meter head. If the front cover and rear cover are connected by threads, if the threaded connection is not tight or loose, water will easily enter. In addition, the opening direction of the terminal is fixed at the terminal head. If the pressure transmitter is installed at a specific angle, such as horizontally, the terminal head opening will be upward or kept horizontal, which will easily cause water stains to enter and affect the safety of the pressure transmitter. Utility Model Content

[0004] The purpose of the present utility model is to provide a waterproof pressure transmitter to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: including a meter head, a mounting post is fixed to the bottom of the meter head, a detection head is fixed to the bottom of the mounting post, the meter head includes a case body, a front cover and a back cover, the front cover and the back cover are respectively threadedly connected to the front and rear ends of the case body, an outer extension sleeve is fixed to the outer periphery of one end of the front cover and the back cover, wiring heads are fixed on both sides of the upper end of the case body, insertion posts are fixed at both ends of the wiring heads, a rotating sleeve is rotatably connected to the insertion post, the rotating sleeve is a right-angle structure, an internal threaded cover is fixed to the end of the rotating sleeve, and a rubber sheet is fixed inside the internal threaded cover.

[0006] Preferably, a sealed bearing is fixed at the connection between the mounting column and the rotating sleeve.

[0007] Preferably, a telescopic front plate is installed at one end of the mounting column away from the internal thread cover, a positioning groove is provided at one end of the telescopic front plate close to the terminal head, a positioning column is fixed at the end of the terminal head and at a position corresponding to the positioning groove, and the positioning columns and the positioning columns are equidistantly distributed, and a group of connecting rods are fixed at one end of the telescopic front plate close to the rotating sleeve, and the ends of the connecting rods are slidably connected to the side wall of the rotating sleeve.

[0008] Preferably, a telescopic groove is provided in the side wall of the rotating sleeve at a position corresponding to the connecting rod, and a telescopic spring is fixed between the inner side wall of the telescopic groove and the connecting rod.

[0009] Preferably, the rubber sheet is a fan-shaped structure and is distributed circumferentially around the opening of the internal thread cover.

[0010] Preferably, a waterproof ring is fixed to the inner side wall of the outer extension sleeve, and water diversion grooves are opened on the outer sides of both ends of the case body.

[0011] Compared with the prior art, the beneficial effects of the present invention are: an external extension sleeve is provided at the connection between the front cover and the rear cover of the case body, which can prevent water stains from entering the meter head through the threaded connection gap, and a rotatable right-angle rotating sleeve is installed at the wiring head. After the pressure transmitter is installed, the installation direction of the wiring outlet can be changed so that its opening is downward, reducing the risk of water ingress. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the assembly cross-sectional structure of the front wiring connector and the rotating sleeve of a waterproof pressure transmitter of the present invention;

[0013] Figure 2 This is a schematic diagram of the installation cross-sectional structure of the front cover and rear cover of a waterproof pressure transmitter of the present invention;

[0014] Figure 3 This is a schematic diagram of the appearance structure of an internal thread cover of a waterproof pressure transmitter of the utility model;

[0015] Figure 4 This utility model is a waterproof pressure transmitter Figure 1 Enlarged structural diagram at point A in the middle.

[0016] In the figure: 1. meter head; 11. meter case body; 12. front cover; 13. back cover; 14. external extension sleeve; 15. waterproof ring; 16. water diversion groove; 2. mounting column; 3. detection head; 4. terminal head; 41. insertion column; 42. positioning column; 5. rotating sleeve; 51. sealing bearing; 52. telescopic front plate; 53. positioning groove; 54. connecting rod; 55. telescopic groove; 56. telescopic spring; 6. internal thread cover; 61. rubber sheet. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-4 The utility model provides a technical solution: it includes a meter head 1, a mounting column 2 is fixed at the bottom of the meter head 1, a detection head 3 is fixed at the bottom of the mounting column 2, the meter head 1 includes a case body 11, a front cover 12 and a back cover 13, the front cover 12 and the back cover 13 are respectively threadedly connected to the front and rear ends of the case body 11, an outer extension sleeve 14 is fixed on the outer periphery of the front cover 12 and the back cover 13 close to one end, a wiring head 4 is fixed on both sides of the upper end of the case body 11, an insertion column 41 is fixed at both ends of the wiring head 4, a rotating sleeve 5 is rotatably connected to the insertion column 41, the rotating sleeve 5 is a right-angle structure, an internal threaded cover 6 is fixed at the end of the rotating sleeve 5, a rubber sheet 61 is fixed inside the internal threaded cover 6, the rubber sheet 61 is a fan-shaped structure, and is distributed circumferentially at the opening of the internal threaded cover 6, a waterproof ring 15 is fixed on the inner side wall of the outer extension sleeve 14, and a water diversion groove 16 is opened on the outer side of both ends of the case body 11.

[0019] A sealed bearing 51 is fixed at the connection between the mounting column 2 and the rotating sleeve 5, and a telescopic front plate 52 is installed at the end of the mounting column 2 away from the internal threaded cover 6. A positioning groove 53 is provided on the telescopic front plate 52 near the end of the terminal head 4, and a positioning column 42 is fixed at the end of the terminal head 4 and at a position corresponding to the positioning groove 53. The positioning columns 42 and the positioning columns 42 are equidistantly distributed, and a group of connecting rods 54 are fixed on the telescopic front plate 52 near the end of the rotating sleeve 5. The end of the connecting rod 54 is slidably connected to the side wall of the rotating sleeve 5, and a telescopic groove 55 is provided in the side wall of the rotating sleeve 5 and at a position corresponding to the connecting rod 54. A telescopic spring 56 is fixed between the inner wall of the telescopic groove 55 and the connecting rod 54.

[0020] Working principle: First, connect the entire device to an external power source, but do not install it on the designated pipe. Use the detection head 3 to detect the gas and liquid pressure in the pipe, and use the head 1 to display the value. During use, if there is water stain on the head 1, the outer extension sleeve 14 can block the connection between the front cover 12, the back cover 13 and the case body 11 to prevent water stains from entering through the connection gaps. In addition, water diversion grooves 16 are set at both ends of the case body 11, and the water stains will slide directly along the water diversion grooves 16. When waterproofing the connection head 4, the rotating sleeve 5 can be rotated according to the installation angle of the entire pressure transmitter. Ensure that the opening of the terminal head 4 is always facing downward to reduce the risk of water stains entering. During operation, first pull the telescopic front plate 52, and when the telescopic spring 56 is compressed, the telescopic front plate 52 slides on the insertion column 41, and then the positioning column 42 is pulled out from the positioning groove 53, and the rotating sleeve 5 can be rotated freely. Conversely, after rotating to the specified position, the positioning column 42 can be reinserted into the positioning groove 53 by resetting the telescopic spring 56 to fix the position. The entire operation is simple and convenient. At the same time, the circumferentially distributed rubber sheet 61 is used to minimize water stains from entering without affecting the passage of the wire.

[0021] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof pressure transmitter, comprising a meter head (1), characterized in that: A mounting post (2) is fixed at the bottom of the meter head (1), and a detection head (3) is fixed at the bottom of the mounting post (2). The meter head (1) includes a meter case body (11), a front cover (12) and a back cover (13). The front cover (12) and the back cover (13) are respectively threadedly connected to the front and rear ends of the meter case body (11). An outer extension sleeve (14) is fixed on the periphery of one end of the front cover (12) and the back cover (13). Wiring heads (4) are fixed on both sides of the upper end of the meter case body (11). Insertion posts (41) are fixed at both ends of the wiring head (4). A rotating sleeve (5) is rotatably connected to the inserting post (41). The rotating sleeve (5) is a right-angle structure. An internal threaded cover (6) is fixed at the end of the rotating sleeve (5), and a rubber sheet (61) is fixed inside the internal threaded cover (6).

2. The waterproof pressure transmitter according to claim 1, characterized in that: A sealed bearing (51) is fixed at the connection between the mounting column (2) and the rotating sleeve (5).

3. The waterproof pressure transmitter according to claim 1, characterized in that: A telescopic front plate (52) is installed at one end of the mounting column (2) away from the internal thread cover (6), and a positioning groove (53) is provided at one end of the telescopic front plate (52) close to the terminal head (4). A positioning column (42) is fixed at the end of the terminal head (4) and at a position corresponding to the positioning groove (53), and the positioning columns (42) and the positioning columns (42) are evenly distributed. A group of connecting rods (54) are fixed at one end of the telescopic front plate (52) close to the rotating sleeve (5), and the ends of the connecting rods (54) are slidably connected to the side wall of the rotating sleeve (5).

4. The waterproof pressure transmitter according to claim 3, characterized in that: A telescopic slot (55) is provided in the side wall of the rotating sleeve (5) at a position corresponding to the connecting rod (54), and a telescopic spring (56) is fixed between the inner side wall of the telescopic slot (55) and the connecting rod (54).

5. The waterproof pressure transmitter according to claim 1, characterized in that: The rubber sheet (61) is a fan-shaped structure and is distributed circumferentially at the opening of the internal thread cover (6).

6. The waterproof pressure transmitter according to claim 1, characterized in that: A waterproof ring (15) is fixed to the inner wall of the outer extension sleeve (14), and water diversion grooves (16) are provided on the outer sides of both ends of the watch case body (11).

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