Transmitter with high sealing performance

Abstract

The transmitter comprises an upper flange and a lower flange, annular grooves are formed in the inner edge position of the bottom of the upper flange and the outer edge position of the top of the lower flange, and rubber rings are fixedly installed at the outer edge position of the bottom of the upper flange and the inner edge position of the top of the lower flange. According to the transmitter of the technical scheme, for the transmitter used in a liquid environment, the housing part, namely the upper housing and the lower housing, is designed in a detachable manner, so that convenience is provided for troubleshooting of the transmitter and maintenance in a later use process; meanwhile, the design and the use of a rubber ring and an annular groove are matched, and a fastening bolt is used for locking and fixing, so that the sealing performance of the whole transmitter can be improved at the outermost layer position, that is, when the transmitter is used in liquid, a first sealing protection measure is realized at the outermost side.

Description

Technical Field

[0001] The invention relates to the technical field of transmitters, in particular to a transmitter with high sealing performance. Background Art

[0002] A transmitter is a converter that converts the output signal of a sensor into a signal that can be recognized by a controller (or converts the non-electrical quantity input by the sensor into an electrical signal and amplifies it for remote measurement and control). The sensor and the transmitter together constitute the monitoring signal source for automatic control. Different physical quantities require different sensors and corresponding transmitters.

[0003] There are also various usage scenarios for transmitters. The transmitter of the technical solution of this application is mainly used to transmit signals in some complex situations such as underwater, industrial oil, and liquid level in large cabins. The environment and problems faced by transmitters used in liquid environments are also relatively complex. Existing transmitters, especially transmitters used in liquid environments, have many problems that need to be solved when using transmitters. The most important one is the safety of the transmitter, that is, the sealing of the transmitter. The sealing is of paramount importance when the transmitter is used in the liquid. It is not only related to the safety of the transmitter itself, but also directly affects the stability and accuracy of the measurement data collected by the transmitter. That is, the components inside the transmitter cannot be affected by the liquid. At the same time, the signal transmission stability of the transmitter, first of all, once the components inside the transmitter are damaged by liquid, they will be damaged. At the same time, when liquid enters, it will directly affect the signal transmission, causing the transmission signal to be disturbed and become unstable and inaccurate.

[0004] As disclosed in the prior art: CN 102200461 A, a liquid level transmitter, there are many other prior art solutions similar to the above. Although the technical solution is provided with a sealing structure, the sealing structure is easily affected by the liquid in a complex and changeable liquid environment, for example, it is affected by erosion and the sealing performance is reduced.

[0005] Therefore, we propose a transmitter with high sealing performance to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a transmitter with high sealing performance to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A transmitter with high sealing performance comprises an upper flange and a lower flange, wherein an annular groove is provided at the inner edge of the bottom of the upper flange and the outer edge of the top of the lower flange, and a rubber ring is fixedly installed at the outer edge of the bottom of the upper flange and the inner edge of the top of the lower flange.

[0009] Preferably, the upper flange and the lower flange are butt-jointed and installed by fastening bolts, and anti-slip gaskets are provided at the bottoms of the ends of the fastening bolts.

[0010] Preferably, an upper shell is integrally mounted on the top of the upper flange, and a lower shell is integrally fixedly mounted on the bottom of the lower flange.

[0011] Preferably, a partition plug is protrudingly installed on the top of the inner cavity of the lower shell, a conical spring is provided on the top of the partition plug, an air guide tube is installed through the side of the top of the partition plug, and a waterproof plug is installed in the middle of the top of the partition plug.

[0012] Preferably, the top and bottom of the conical spring are fixedly connected with sealing rings, and the air guide tube and the waterproof plug are located at the inner ring position of the sealing ring at the bottom, and the outer wall of the sealing ring at the bottom position is against the inner wall of the upper shell.

[0013] Preferably, a wiring tube is fixedly installed on the top of the upper shell, and a special cable is arranged through the inner cavity of the wiring tube, and the bottom position of the special cable is located in the inner ring area of ​​the sealing ring on the top layer, and the top of the sealing ring on the top layer is against the top of the inner wall of the upper shell.

[0014] Preferably, a sealing mechanism is provided at the bottom of the inner cavity of the wiring tube, and the sealing mechanism is mainly composed of a rubber sealing ring and a plastic metal sheet. The plastic metal sheet is fixedly installed on the top and bottom of the rubber sealing ring, and an extrusion spring is fixedly installed on the top of the plastic metal sheet at the top.

[0015] Preferably, an extrusion screw is installed on the top thread of the inner cavity of the wiring tube, and the extrusion screw is a rubber screw structure with a hollow middle portion.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The transmitter with high sealing performance is designed for transmitters used in liquid environments. First, the shell part, i.e., the upper shell and the lower shell, can be detached, which can provide convenience for transmitter fault troubleshooting and maintenance during later use. At the same time, with the design and use of rubber rings and annular grooves, the sealing performance of the entire transmitter can be improved at the outermost position by locking and fixing with fastening bolts, that is, when used in liquid, the first sealing protection measure is realized at the outermost side.

[0018] 2. In the transmitter with high sealing performance, during the process of docking and assembling the upper shell and the lower shell through two flange structures, the lower shell continuously moves upward together with the partition plug, and the conical spring and the sealing ring on its top are against the top of the inner wall of the upper shell. Therefore, when the lower shell drives the partition plug 7 to move upward, the conical spring will be gradually compressed and deformed. In the process of the conical spring being compressed and deformed, the sealing rings on the top and bottom will be squeezed and deformed. In the process of the deformation of the sealing ring at the bottom, it will continuously be squeezed and contacted with the inner wall of the upper shell, so that the inner wall gap at the docking position of the upper flange and the lower flange can be blocked by the side of the deformed sealing ring, that is, after the sealing ring 9 is deformed, it will fit tightly in the gap position at the docking position of the upper flange and the lower flange, thereby realizing the second sealing protection inside the transmitter.

[0019] 3. For the transmitter with high sealing performance, when the upper shell and the lower shell are butt-mounted, the conical spring is deformed and squeezes the sealing ring to deform synchronously. When the sealing ring at the top of the conical spring is squeezed and deformed, on the one hand, the special cable can be inserted into the through-hole position on the upper shell for close fitting to achieve the purpose of the third sealing protection. At the same time, when the sealing ring at the top of the conical spring is deformed, it will also firmly clamp and wrap the special cable, so as to avoid the special cable being affected by external force during subsequent use, resulting in the internal joint position being pulled and damaged and the joint being disconnected.

[0020] 4. When the compression screw of the transmitter with high sealing performance is screwed in, the compression screw will deform to a certain extent due to the interaction force between the compression screw and the inner wall of the wiring tube. It can not only fix the special cable on the transmitter, but also tightly wrap the special cable at the top position. The outer wall of the compression screw is tightly fitted with the inner wall of the wiring tube, achieving the fourth sealing protection purpose.

[0021] 5. For the transmitter with high sealing performance, as the extrusion screw goes deeper, the bottom of the extrusion screw will squeeze the extrusion spring to deform. After the extrusion spring is deformed, it will generate interaction force with the plastic metal sheet at the top. Then, the rubber sealing ring between the two plastic metal sheets is deformed by the force, and the inner ring of the rubber sealing ring tightly wraps the special cable, and the outer wall of the rubber sealing ring tightly fits the inner wall of the wiring, thereby achieving the fifth sealing protection purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is an exploded view of the structure of the present invention;

[0024] Figure 3 This is an exploded view of the upper housing structure of the present invention;

[0025] Figure 4 This is a cross-sectional view of the wiring tube structure of the present invention.

[0026] In the figure: 1. upper flange; 2. lower flange; 3. annular groove; 4. rubber ring; 5. upper shell; 6. lower shell; 7. separator plug; 8. conical spring; 9. sealing ring; 10. wiring tube; 11. extrusion screw; 12. sealing mechanism; 121. rubber sealing ring; 122. plastic metal sheet; 13. extrusion spring; 14. special cable. DETAILED DESCRIPTION

[0027] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0028] The present invention provides a transmitter technical solution with high sealing performance:

[0029] Embodiment 1:

[0030] like Figure 1 As shown, the main structure of the transmitter of the present technical solution includes an upper flange 1 and a lower flange 2, an upper shell 5 is integrally fixedly installed on the top of the upper flange 1, and a lower shell 6 is integrally installed on the bottom of the lower flange 2, and the components of the transmitter body are installed in the internal space of the upper shell 5 and the lower shell 6.

[0031] like Figure 2 As shown, a rubber ring 4 is fixedly installed at the bottom outer edge of the upper flange 1 and the inner edge of the top of the lower flange 2, and an annular groove 3 for the rubber ring 4 to be inserted and sealed is provided at the inner edge of the bottom of the upper flange 1 and the outer edge of the lower flange 2.

[0032] Wherein, mounting holes are provided on both the upper flange 1 and the lower flange 2, and the upper flange 1 and the lower flange 2 are locked and fixed by fastening bolts, and anti-slip washers are provided at the bottom of the fastening bolt ends.

[0033] In this embodiment, for the transmitter used in a liquid environment, a detachable shell part, namely the upper shell 5 and the lower shell 6, is firstly adopted, which can provide convenience for troubleshooting of the transmitter and maintenance during later use. At the same time, in conjunction with the design and use of the rubber ring 4 and the annular groove 3, the sealing of the entire transmitter can be improved at the outermost position by locking and fixing with fastening bolts, that is, when used in liquid, the first sealing protection measure is implemented at the outermost side.

[0034] Embodiment 2:

[0035] like Figure 2 As shown, a partition plug 7 is protrudingly installed on the top of the inner cavity of the lower shell 6, a conical spring 8 is fixedly bonded to the top of the partition plug 7, and sealing rings 9 that can be squeezed and deformed are fixedly installed on the top and bottom of the conical spring 8.

[0036] Among them, an air duct is installed through the edge of the top of the partition plug 7, and a waterproof plug is installed in the middle of the top of the partition plug 7, and the air duct and the waterproof plug are both located in the inner circle area of ​​the sealing ring 9.

[0037] In this embodiment, based on Example 1, during the process of docking and assembling the upper shell 5 and the lower shell 6 through two flange structures, the lower shell 6 continuously moves upward together with the partition plug 7, and the conical spring 8 and the sealing ring 9 at its top are against the top of the inner wall of the upper shell 5. Therefore, when the lower shell 6 drives the partition plug 7 to move upward, the conical spring 8 will be gradually compressed and deformed. In the process of the conical spring 8 being compressed and deformed, the sealing rings 9 at the top and bottom will be squeezed and deformed. In the process of the deformation of the sealing ring 9 at the bottom, it will continuously be squeezed and contacted with the inner wall of the upper shell 5. In this way, the inner wall gap at the docking position of the upper flange 1 and the lower flange 2 can be blocked by the side of the deformed sealing ring 9, that is, after the sealing ring 9 is deformed, it will fit tightly in the gap position at the docking position of the upper flange 1 and the lower flange 2, thereby realizing a second sealing protection inside the transmitter.

[0038] Embodiment 3:

[0039] like Figure 2 As shown, a partition plug 7 is protrudingly installed on the top of the inner cavity of the lower shell 6, a conical spring 8 is fixedly bonded on the top of the partition plug 7, and sealing rings 9 that can be squeezed and deformed are fixedly installed on the top and bottom of the conical spring 8. A wiring tube 10 is integrally installed on the top of the upper shell 5, and a special cable 14 is installed through the inner cavity of the wiring tube 10.

[0040] The bottom of the dedicated cable 14 passes through the wiring tube 10 and extends into the inner cavity of the upper housing 5 , and the dedicated cable 14 is located in the inner ring of the sealing ring 9 at the top of the conical spring 8 .

[0041] In this embodiment, based on Embodiment 1 and Embodiment 2, that is, when the upper shell 5 and the lower shell 6 are docked and installed, the conical spring 8 is deformed and squeezes the sealing ring 9 to deform synchronously. When the sealing ring 9 at the top of the conical spring 8 is squeezed and deformed, on the one hand, the special cable 14 can be inserted into the through hole position on the upper shell 5 for close fitting to achieve the purpose of the third sealing protection. At the same time, the sealing ring 9 at the top of the conical spring 8 will also firmly clamp and wrap the special cable when it is deformed, so as to avoid the special cable being affected by external force during subsequent use, resulting in the internal joint position being pulled and damaged and the joint being disconnected.

[0042] Embodiment 4:

[0043] like Figure 4 As shown, a sealing mechanism 12 is arranged at the bottom of the inner cavity of the wiring tube 10. The sealing mechanism 12 is mainly composed of a rubber sealing ring 121 and a plastic metal sheet 122. The plastic metal sheet 122 is fixedly installed on the top and bottom of the rubber sealing ring 121, and an extrusion spring 13 is fixedly bonded to the top of the plastic metal sheet 122 at the top.

[0044] like Figure 1 , Figure 2 and Figure 3 As shown, a clamping screw 11 is threadedly installed on the top of the wiring tube 10, and the clamping screw 11 is a rubber screw structure with a hollow middle portion.

[0045] The dedicated cable 14 passes through the clamping screw 11 and the sealing mechanism 12 from top to bottom and extends into the inner cavity of the upper housing 5 .

[0046] In this embodiment, when using the transmitter of the present technical solution, first, the special cable 14 is passed through the clamping screw 11, and a certain length is reserved, and then the clamping screw with the special cable 14 is screwed into the wiring tube 10. When the clamping screw 11 is screwed in, due to the interaction force between the clamping screw 11 and the inner wall of the wiring tube 10, the clamping screw 11 will undergo a certain degree of deformation, which not only fixes the special cable 14 on the transmitter, but also tightly wraps the special cable 14 at the top position, and the outer wall of the extrusion screw 11 is tightly fitted with the inner wall of the wiring tube 10, thereby achieving the fourth sealing protection purpose.

[0047] When the extrusion screw 11 is screwed in, as the extrusion screw 11 continues to go deeper, the bottom of the extrusion screw 11 will squeeze the extrusion spring 13 to deform. After the extrusion spring 13 is deformed, it will generate an interaction force with the plastic metal sheet 122 located at the top position. Then, the rubber sealing ring 121 located between the two plastic metal sheets 122 is deformed by the force, and the inner ring of the rubber sealing ring 121 tightly wraps the special cable 14, and the outer wall of the rubber sealing ring 121 tightly fits the inner wall of the wiring 10, thereby achieving the fifth sealing protection purpose.

[0048] To sum up, the transmitter of the present technical solution, especially the transmitter used in liquid, has a total of five sealing protection designs from the inside to the outside, which greatly improves the overall sealing of the transmitter, that is, it improves the safety, stability and accuracy of the detection data of the transmitter when used in liquid.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transmitter with high sealing performance, comprising an upper flange (1) and a lower flange (2), characterized in that: An annular groove (3) is provided at the inner edge of the bottom of the upper flange (1) and the outer edge of the top of the lower flange (2), and a rubber ring (4) is fixedly installed at the outer edge of the bottom of the upper flange (1) and the inner edge of the top of the lower flange (2).

2. A transmitter with high sealing performance according to claim 1, characterized in that: The upper flange (1) and the lower flange (2) are butt-jointed and installed by means of fastening bolts, and anti-skid gaskets are arranged at the bottoms of the ends of the fastening bolts.

3. The transmitter with high sealing performance according to claim 1, characterized in that: An upper shell (5) is integrally mounted on the top of the upper flange (1), and a lower shell (6) is integrally fixedly mounted on the bottom of the lower flange (2).

4. The transmitter with high sealing performance according to claim 3, characterized in that: A partition plug (7) is protrudingly mounted on the top of the inner cavity of the lower shell (6), a conical spring (8) is arranged on the top of the partition plug (7), an air guide tube is penetrated through the side of the top of the partition plug (7), and a waterproof plug is installed in the middle of the top of the partition plug (7).

5. The transmitter with high sealing performance according to claim 4, characterized in that: The top and bottom of the conical spring (8) are fixedly connected with a sealing ring (9), and the air guide tube and the waterproof plug are both located at the inner ring position of the sealing ring (9) at the bottom, and the outer wall of the sealing ring (9) located at the bottom position abuts against the inner wall of the upper shell (5).

6. The transmitter with high sealing performance according to claim 1, characterized in that: A wiring tube (10) is fixedly installed on the top of the upper shell (5), and a special cable (14) is arranged through the inner cavity of the wiring tube (10), and the bottom position of the special cable (14) is located in the inner ring area of ​​the sealing ring (9) on the top layer, and the top of the sealing ring (9) on the top layer is against the top of the inner wall of the upper shell (5).

7. The transmitter with high sealing performance according to claim 6, characterized in that: A sealing mechanism (12) is provided at the bottom of the inner cavity of the wiring tube (10), and the sealing mechanism (12) is mainly composed of a rubber sealing ring (121) and a plastic metal sheet (122). The plastic metal sheet (122) is fixedly installed on the top and bottom of the rubber sealing ring (121), and an extrusion spring (13) is fixedly installed on the top of the plastic metal sheet (122).

8. The transmitter with high sealing performance according to claim 6, characterized in that: An extrusion screw (11) is threadedly installed on the top of the inner cavity of the wiring tube (10), and the extrusion screw (11) is a rubber screw structure with a hollow middle portion.

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