CN116293132A - Safety leak-proof connector for instrument installation - Google Patents

Abstract

The invention relates to the technical field of instrument connection, in particular to a safety anti-leak connector for instrument installation, including a pipeline main body and an anti-leakage mechanism. Connection; the anti-leakage mechanism includes a connecting cylinder, a piston, a return spring and an O-ring, the connecting cylinder is connected to the top of the pipeline main body, a piston is arranged inside the connecting cylinder, and the bottom end of the piston extends to the pipeline Inside the main body, an O-ring is sleeved on the surface of the connecting cylinder, and a return spring is arranged on the surface of the connecting cylinder and above the O-ring, and the returning spring is used for jacking up the piston. The invention does not need to close the main gate of the valve related to the instrument in advance when replacing or maintaining the instrument, and the remaining medium after the instrument is disassembled will not overflow or leak.

Description

Gauge Mount Safety Stop Connectors

technical field

The invention relates to the technical field of instrument connection, in particular to a safety leak-proof connector for instrument installation.

Background technique

Instrument, the general term for instruments that display numerical values, including pressure meters, flow meters, instruments and meters are appliances or equipment used to detect, measure, observe, and calculate various physical quantities, material components, physical parameters, etc., including inspection instruments, resistance meters, analysis In a broad sense, instruments and meters can also have functions such as automatic control, alarm, signal transmission and data processing, such as pneumatic regulating instruments and electric regulating instruments used in automatic control of industrial production processes , and distributed instrument control systems are also instruments.

The instrument often needs to be replaced or disassembled for maintenance after long-term use. When replacing or disassembling the traditional instrument, it is necessary to close the main valve of the valve related to the instrument first, so that the medium flowing into the instrument is in a closed state, and then disassemble the instrument. During disassembly, because the pipeline between the instrument and the valve will also have residual media, these residual media will overflow after the instrument is disassembled, which is likely to cause safety accidents, and the way to replace or repair the instrument by closing the main gate of the valve is also relatively cumbersome, thus giving It is very troublesome for the user to replace or disassemble the instrument, so there is a need for an instrument installation safety leak-proof connector.

Contents of the invention

The purpose of the present invention is to provide a safety leak-proof connector for instrument installation, so as to solve the problem that the residual medium of the traditional instrument will leak during replacement or disassembly and maintenance in the above-mentioned background art.

In order to achieve the above object, the present invention provides the following technical solution: the instrument is installed with a safety anti-leakage connector, including a pipeline main body and an anti-leakage mechanism. Mechanisms are connected with each other; the anti-leakage mechanism includes a connecting cylinder, a piston, a return spring and an O-ring, the connecting cylinder is connected to the top of the pipeline main body, a piston is arranged inside the connecting cylinder, and the bottom end of the piston extends To the inside of the pipeline main body, an O-ring is sleeved on the surface of the connecting cylinder, and a return spring is arranged on the surface of the connecting cylinder and above the O-ring, and the returning spring is used for jacking up the piston.

Preferably, the inner wall of the top end of the pipeline main body is provided with a pipeline internal thread; the surface of the instrument body is provided with an instrument external thread, and the surface of the instrument main body is integrally connected with a detection rod below the instrument external thread , and the detection stem extends to the inside of the piston.

Preferably, the outer surface of the connecting cylinder is provided with connecting external threads, and the connecting external threads and the pipe internal threads are screwed together.

Preferably, a through-cavity is opened inside the connecting cylinder, and the piston is located inside the through-cavity, and a connecting inner thread is opened on the top of the through-cavity, and the connecting inner thread and the outer thread of the instrument are screwed together.

Preferably, the bottom end of the connecting cylinder is provided with a tapered groove, and the tapered groove and the O-ring are tightly sealed after the meter body is disassembled, and the tapered groove and the O-ring are separated from each other after the meter body is installed.

Preferably, the return spring is located inside the cavity, and the top end of the return spring is fixedly connected to the surface of the protrusion on the top of the piston, and the bottom end of the return spring is fixedly connected to the protrusion connected to the inner wall of the outer thread.

Preferably, the surface of the piston is provided with an annular sinking groove, and the O-ring is located inside the annular sinking groove, and the maximum diameter of the annular sinking groove is greater than the minimum diameter of the tapered groove, and the maximum diameter of the annular sinking groove is smaller than the tapered groove The maximum diameter of the slot.

Preferably, the minimum diameter of the connecting external thread is larger than the external diameter at the middle position of the piston.

Preferably, a liquid inlet hole is opened on one side of the piston, and the liquid inlet hole is used for the entry of the medium; a detection block is provided inside the piston, and the detection block is used to cooperate with the detection rod to detect the medium Work.

Compared with the prior art, the beneficial effect of the present invention is: the instrument is installed with a safety anti-leakage connector provided with an anti-leakage mechanism. When the anti-leakage mechanism is implemented, the rotation of the main body of the instrument will squeeze the piston down, and the piston will move downward. When moving, it will drive the O-ring inside the annular sinker to move down, so that the O-ring and the tapered groove are separated from each other. At this time, the medium inside the main body of the pipeline will enter the liquid inlet hole through the gap between the piston and the connecting outer thread. Inside the piston, the connecting cylinder and the main body of the meter will be sealed due to the threaded connection between the outer thread of the meter and the connecting inner thread; when disassembling, by rotating the main body of the meter, the main body of the meter will move upward, and the piston will move under the elastic force of the return spring. It moves downwards and upwards, thereby driving the O-ring inside the annular sinker to move upwards. When it moves until the O-ring and the tapered groove are close to each other, a sealed state is formed at this time. Then rotate the main body of the instrument to remove it, and the inside of the pipe main body The medium will not leak through the connecting cylinder, so the present invention does not need to close the main valve related to the instrument in advance when replacing or maintaining the instrument, and the residual medium after the instrument is disassembled will not overflow or leak.

Description of drawings

Fig. 1 is a schematic diagram of a three-dimensional appearance structure of the present invention;

Fig. 2 is a schematic diagram of a three-dimensional squint view structure of the present invention;

Fig. 3 is a schematic diagram of the separation structure of the instrument main body of the present invention;

Fig. 4 is a schematic diagram of an explosion structure of the present invention;

Fig. 5 is a schematic cross-sectional structure diagram of the installation state of the present invention;

Fig. 6 is a schematic cross-sectional structure diagram of the present invention in a dismantled state.

In the figure: 1. The main body of the pipeline; 11. The internal thread of the pipeline; 2. The main body of the instrument; 21. The external thread of the instrument; 22. The detection rod; 3. The leakage prevention mechanism; 31. The connecting cylinder; ; 312, through cavity; 313, connecting internal thread; 314, tapered groove; 32, piston; 321, annular sinking groove; 322, liquid inlet hole; 323, detection block; 33, return spring; 34, O-ring .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. In addition , the terms "first", "second", "third", "upper, lower, left, right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary. Based on the embodiments of the present invention, those of ordinary skill in the art can obtain all Other embodiments all belong to the protection scope of the present invention.

The structure of the instrument installation safety leak-proof connector provided by the present invention is shown in Figure 1 and Figure 4, including a pipeline main body 1 and a leak-proof mechanism 3, an instrument main body 2 is arranged above the pipeline main body 1, and an inner wall on the top of the pipeline main body 1 There is a pipeline internal thread 11; the surface of the instrument body 2 is provided with an instrument external thread 21, and the surface of the instrument main body 2 is integrally connected with a detection rod 22 located below the instrument external thread 21, and the detection rod 22 extends to the inside of the piston 32 , and the instrument main body 2 and the pipeline main body 1 are connected to each other through the anti-leakage mechanism 3 .

During implementation, the anti-leakage mechanism 3 is installed on the top of the pipeline main body 1. During installation, the external thread 311 and the internal thread 11 of the pipeline are screwed together for sealing and fixing. The outer thread 21 will enter the inside of the through cavity 312, and then by rotating the instrument main body 2, the instrument outer thread 21 and the connecting inner thread 313 are screwed together to fix the instrument main body 2, and at the same time, the instrument outer thread 21 is connected to the connection When the internal thread 313 is threaded, it will seal the connecting cylinder 31 and the instrument main body 2 .

Further, as shown in FIG. 2 and FIG. 5 , the anti-leakage mechanism 3 includes a connecting cylinder 31, a piston 32, a return spring 33 and an O-ring 34. The connecting cylinder 31 is connected to the top end of the pipeline main body 1, and the inner side of the connecting cylinder 31 A piston 32 is provided, and the bottom end of the piston 32 extends to the inside of the pipeline main body 1, an O-ring 34 is sleeved on the surface of the connecting cylinder 31, and a return spring 33 is arranged on the surface of the connecting cylinder 31 and above the O-ring 34, The return spring 33 is used to lift the piston 32. The outer surface of the connecting cylinder 31 is provided with a connecting external thread 311, and the connecting external thread 311 is threadedly connected with the pipeline internal thread 11. The inside of the connecting cylinder 31 is provided with There is a through cavity 312, and the piston 32 is located inside the through cavity 312. The top of the through cavity 312 is provided with a connecting internal thread 313, and the connecting internal thread 313 and the instrument external thread 21 are screwed together.

During implementation, during the connecting process of the instrument body 2 rotating downward, the instrument body 2 will squeeze the piston 32 to move down, and when the piston 32 moves down, it will drive the O-ring 34 inside the annular sinker 321 to move down, so that the O-ring 34 Separated from the tapered groove 314, the medium inside the pipeline main body 1 will enter the inside of the piston 32 through the gap between the piston 32 and the through cavity 312 from the liquid inlet 322, because the external thread 21 of the instrument and the connecting internal thread The 313 threaded connection will make the connecting cylinder 31 and the instrument main body 2 sealed, so the medium will not leak during this process, and the medium entering the piston 32 will cooperate with the detection rod 22 and the detection block 323 to complete subsequent detection by the instrument main body 2.

Further, as shown in Figure 3 and Figure 6, the bottom end of the connecting cylinder 31 is provided with a tapered groove 314, and the tapered groove 314 and the O-ring 34 of the instrument body 2 are tightly sealed to each other after the instrument body 2 is disassembled, and the instrument body 2 The installed tapered groove 314 is separated from the O-ring 34, the return spring 33 is located inside the cavity 312, and the top of the return spring 33 is fixedly connected to the surface of the protrusion on the top of the piston 32, and the bottom of the return spring 33 It is fixedly connected with the protruding part of the inner wall of the through cavity 312, the surface of the piston 32 is provided with an annular sinking groove 321, and the O-ring 34 is located inside the annular sinking groove 321, and the maximum diameter of the annular sinking groove 321 is larger than that of the tapered groove 314 The minimum diameter, while the maximum diameter of the annular sinker 321 is smaller than the maximum diameter of the tapered groove 314, the minimum diameter of the through cavity 312 is greater than the outer diameter at the middle of the piston 32, one side of the piston 32 is provided with a liquid inlet 322, and the The liquid inlet hole 322 is used for entering the medium; the inside of the piston 32 is provided with a detection block 323 , and the detection block 323 is used to cooperate with the detection feeler rod 22 to detect the medium.

During the implementation process, if the instrument body 2 needs to be replaced or disassembled for maintenance, by rotating the instrument body 2, the instrument body 2 will move upwards, and the piston 32 will move upwards under the elastic force of the return spring 33, thereby driving the inside of the annular sinker 321 The O-ring 34 moves upward, and when it moves until the O-ring 34 and the tapered groove 314 are close to each other, a sealed state is formed at this time, and then the instrument main body 2 is rotated to remove it, and the medium inside the pipe main body 1 will not pass through. The connecting cylinder 31 leaks.

Working principle: When in use, first install the anti-leakage mechanism 3 on the top of the pipeline main body 1, and then seal and fix it by connecting the external thread 311 and the internal thread 11 of the pipeline during installation, and then insert the main body of the instrument 2 into the anti-leakage mechanism 3 Inside, the instrument external thread 21 will enter the interior of the through cavity 312, and then by rotating the instrument main body 2, the instrument external thread 21 and the connecting internal thread 313 are screwed together to fix the instrument main body 2, and at the same time the instrument external thread When the tooth 21 is threadedly connected with the connecting internal thread 313, the connecting cylinder 31 and the instrument main body 2 will be sealed.

Subsequently, during the connecting process of the instrument body 2 rotating downward, the instrument body 2 will squeeze the piston 32 to move down, and when the piston 32 moves down, it will drive the O-ring 34 inside the annular sinker 321 to move down, so that the O-ring 34 Separated from the tapered groove 314, the medium inside the pipeline main body 1 will enter the inside of the piston 32 through the gap between the piston 32 and the through cavity 312 from the liquid inlet 322, because the external thread 21 of the instrument and the connecting internal thread The 313 threaded connection will make the connecting cylinder 31 and the instrument main body 2 sealed, so the medium will not leak during this process, and the medium entering the piston 32 will cooperate with the detection rod 22 and the detection block 323 to complete subsequent detection by the instrument main body 2.

During use, if the instrument main body 2 needs to be replaced or disassembled for maintenance, by rotating the instrument main body 2, the instrument main body 2 will move upward, and the piston 32 will move upward under the elastic force of the return spring 33, thereby driving the annular sinker 321 The inner O-ring 34 moves upwards. When the O-ring 34 and the tapered groove 314 are moved close to each other, a sealed state is formed at this time, and then the instrument main body 2 is rotated to remove it. The medium inside the pipe main body 1 will not Leakage occurs through the connecting cylinder 31, and the use of the safety leak-proof connector is finally completed.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. The instrument is installed with a safety anti-leakage connector, including a pipeline main body (1) and an anti-leakage mechanism (3). ) and the pipeline main body (1) are connected to each other through an anti-leak mechanism (3); the anti-leak mechanism (3) includes a connecting cylinder (31), a piston (32), a return spring (33) and an O-ring ( 34), the connecting cylinder (31) is connected to the top of the pipeline main body (1), the inner side of the connecting cylinder (31) is provided with a piston (32), and the bottom end of the piston (32) extends to the pipeline main body (1 ), the surface of the connecting cylinder (31) is sleeved with an O-ring (34), and the surface of the connecting cylinder (31) is provided with a return spring (33) above the O-ring (34). Return spring (33) is used for jacking up work to piston (32). 2. The instrument installation safety leak-proof connector according to claim 1, characterized in that: the inner wall of the top end of the pipeline main body (1) is provided with pipeline internal threads (11); the instrument main body (2) The surface is provided with an instrument external screw (21), and the surface of the instrument main body (2) is integrally connected with a detection rod (22) under the surface of the instrument external screw (21), and the detection rod (22) extends to the piston (32) INTERIOR. 3. The instrument installation safety leak-proof connector according to claim 1, characterized in that: the outer surface of the connecting cylinder (31) is provided with connecting external threads (311), and the connecting external threads (311) and The inner thread of the pipeline (11) is threadedly connected with each other. 4. The instrument installation safety leak-proof connector according to claim 1, characterized in that: a through cavity (312) is opened inside the connecting cylinder (31), and the piston (32) is located at the end of the through cavity (312). Inside, the top of the through cavity (312) is provided with a connecting internal thread (313), and the connecting internal thread (313) and the instrument external thread (21) are screwed together. 5. The instrument installation safety leak-proof connector according to claim 4, characterized in that: the bottom end of the connecting cylinder (31) is provided with a tapered groove (314), and the taper groove (314) after the instrument main body (2) is disassembled The shaped groove (314) and the O-ring (34) are tightly sealed to each other, and the tapered groove (314) and the O-ring (34) of the meter main body (2) are separated from each other after installation. 6. The instrument installation safety leak-proof connector according to claim 1, characterized in that: the return spring (33) is located inside the through cavity (312), and the top end of the return spring (33) is in contact with the piston (32) The surfaces of the protrusions on the top are fixedly connected to each other, and the bottom end of the return spring (33) is fixedly connected to the protrusions on the inner wall of the through cavity (312). 7. The instrument installation safety leak-proof connector according to claim 1, characterized in that: the surface of the piston (32) is provided with an annular sinking groove (321), and the O-ring (34) is located in the annular sinking groove ( 321), and the maximum diameter of the annular sinker (321) is greater than the minimum diameter of the tapered groove (314), while the maximum diameter of the annular sinker (321) is smaller than the maximum diameter of the tapered groove (314). 8. The instrument installation safety anti-leakage connector according to claim 4, characterized in that: the minimum diameter of the through cavity (312) is larger than the outer diameter at the middle position of the piston (32). 9. The instrument installation safety leak-proof connector according to claim 1, characterized in that: a liquid inlet hole (322) is opened on one side of the piston (32), and the liquid inlet hole (322) is used for medium The entry work; the inside of the piston (32) is provided with a detection block (323), and the detection block (323) is used to cooperate with the detection feeler rod (22) to detect the medium.

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