CN214618134U

CN214618134U - Valve signal-back device

Info

Publication number: CN214618134U
Application number: CN202120567797.9U
Authority: CN
Inventors: 陈丽刚
Original assignee: Suzhou Ansheng New Material Technology Co ltd
Current assignee: Suzhou Ansheng New Material Technology Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-11-05
Anticipated expiration: 2031-03-19

Abstract

The utility model discloses a valve signal response ware, drain pan subassembly and face shell subassembly, the drain pan subassembly includes base, switching signal spare, terminal, seals stopper and first main shaft, the face shell subassembly includes the face-piece, instructs carousel, carousel guard shield, instructs sealing washer and second main shaft, the second main shaft is unanimous with the axial direction of first main shaft, along this direction connection, and the plane flame proof faying surface that perpendicular to base subassembly and face shell subassembly constitute. In this way, the utility model discloses a main shaft adopts split type structure, it is relatively convenient to install, first flame proof faying face and the equal perpendicular to flame proof faying face of second flame proof faying face, and first flame proof faying face and second flame proof faying face are through first main shaft and the loose connection of second main shaft, the whole associativity requirement is not high, can satisfy the flame proof grade far above the traditional structure under the same conditions, specially adapted flame proof shell "d" type valve echo ware, has advantages such as processing is simple, convenient assembling, explosion proof grade height.

Description

Valve signal-back device

Technical Field

The utility model relates to a technical field of valve especially relates to a valve echo ware.

Background

The valve echo device is a field instrument for automatic valve position and signal feedback. For detecting and monitoring the position of piston movement within a cylinder valve or other cylinder actuator. Specifically, the valve signal responding device can be mounted on an angle valve, a diaphragm valve, a butterfly valve and other switch type valves, is used for outputting the valve state in a switch signal mode, and can be conveniently connected to a field PLC or DCS system to realize remote feedback of the valve switch state.

For the d-shaped valve transponder with the explosion-proof shell, the core design is the design of an explosion-proof joint surface. The flameproof joint surface is also called a flame path, and refers to the part where the corresponding surfaces of different parts of the flameproof shell or the shell joint are matched together and the internal explosion can be prevented from spreading to the environment of explosive gas around the shell. The grade of the explosion-proof joint surface is clearly specified in the national standard, is the most core technical index of an explosion-proof product, and is directly related to the grade and the quality of the product.

Taking the space of 100-500 cm ^3 and the width of the bonding surface controlled to be more than 9.5mm as an example, the requirements of controlling the clearance of the explosion-proof bonding surface of the plane and the cylinder are as follows:

as shown in fig. 1, in the conventional related art, a main shaft 3 of a valve transponder is inserted between a bottom case assembly 1 and a face case assembly 2, a cam is disposed on the main shaft 3 and rotates along with the main shaft, and a micro switch is disposed in the bottom case, in a specific application, the main shaft 3 is connected to an actuator (e.g., a cylinder), the actuator is connected to a valve, when the actuator acts, the valve is controlled to open or close, the main shaft 3 rotates along with the main shaft, the cam on the main shaft 3 rotates along with the main shaft, and the micro switch is triggered, so that a contact of the micro switch is closed or opened, and a switching value signal is generated and transmitted. When the circumstances such as first use or outage and maintenance, all need open the face lid, adjust etc. to the initial position of inside cam, however, main shaft 3 wears to establish between drain pan subassembly 1 and face-piece subassembly 2, and the not convenient to detach uses very inconveniently. The explosion-proof joint surfaces of the structure are the explosion-proof joint surfaces X, Y1 and Y2 shown in figure 1, the coaxiality, the diameter roundness and the X verticality of Y1 and Y2 of the main shaft 3 need to be guaranteed, meanwhile, the position degree of a fastener is considered, the processing and mounting difficulty is extremely high, and the high explosion-proof grade with low cost cannot be achieved.

As shown in fig. 2 and 3, according to the description in patent CN208474629U, although the main shaft is divided into an upper part and a lower part, which is convenient for installation and debugging, a cylindrical matching surface of the bottom shell and the face shell forms an explosion-proof joint surface X, which is in the same direction and concentric with the explosion-proof joint surfaces Y1 and Y2 of the main shaft, the explosion-proof joint surface Y1 is associated with the planar explosion-proof joint surface X, which is also associated with the explosion-proof joint surface Y2, and thus certain requirements are inevitably provided for processing, and the processing and assembling difficulties are greatly increased. The split type design part of the main shaft reduces the assembly difficulty, but the processing and assembly difficulty is not greatly reduced due to the concentric problem of the shell.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a valve signal transmitter, specially adapted flame proof shell "d" type valve signal transmitter, has advantages such as processing is simple, convenient assembling, explosion-proof grade height.

In order to solve the technical problem, the utility model discloses a technical scheme be: there is provided a valve transponder comprising:

the bottom shell assembly comprises a base, a switching signal piece, a binding post, a sealing plug and a first main shaft, wherein the first main shaft and the bottom shell form a cylindrical first explosion-proof combination surface, and the axial direction of the first explosion-proof combination surface is consistent with the direction of the first main shaft;

the surface shell assembly comprises a surface shell, an indicating rotary table, a rotary table protective cover, an indicating sealing ring and a second main shaft, wherein the second main shaft and the surface shell form a cylindrical second explosion-proof joint surface, and the axial direction of the second explosion-proof joint surface is consistent with the direction of the second main shaft;

the bottom shell assembly and the face shell assembly are attached to form a plane explosion-proof joint surface and are fixed by a second fastener;

the second main shaft is consistent with the first main shaft in the axial direction, is connected along the axial direction and is perpendicular to a plane explosion-proof joint surface formed by the base component and the face shell component.

In a preferred embodiment of the present invention, the switch signal element and the terminal are fixedly disposed in the cavity of the base, and the first spindle is movably mounted in the base by a fastener.

In a preferred embodiment of the present invention, a cam is disposed on the first main shaft.

In a preferred embodiment of the present invention, the first spindle rotates in the base, and the cam fixed on the first spindle triggers the switch signal element to generate the switching value signal.

In a preferred embodiment of the present invention, the second spindle is mounted in the face housing by a snap-in member, the indicating dial is fixed to the second spindle, and the dial cover covers the indicating dial and is fixed to the face housing by the first fastening member.

In a preferred embodiment of the present invention, the first and second flameproof bonding surfaces are perpendicular to the flameproof bonding surface.

In a preferred embodiment of the present invention, the first explosion-proof bonding surface and the second explosion-proof bonding surface are connected by a first main shaft and a second main shaft.

The utility model has the advantages that: the utility model provides a valve signal response ware, the main shaft adopts split type structure, it is relatively convenient to install, the equal perpendicular to flame proof faying face of first flame proof faying face and second flame proof faying face, and first flame proof faying face and second flame proof faying face are through first main shaft and the loose connection of second main shaft, the whole associativity requirement is not high, can satisfy the flame proof grade far above traditional structure under the same condition, specially adapted flame proof shell "d" type valve signal response ware, and the valve signal response ware has the advantages of processing simply, high assembly convenience, explosion proof grade.

Drawings

FIG. 1 is a schematic diagram of a conventional valve transponder of the prior art;

FIG. 2 is a schematic diagram of another conventional valve transponder of the prior art;

FIG. 3 is a schematic diagram of another conventional valve transponder of the prior art;

FIG. 4 is a schematic diagram of a preferred embodiment of the valve signal transmitter of the present invention;

FIG. 5 is an exploded view of FIG. 4;

the parts in the drawings are numbered as follows: 1. the explosion-proof device comprises a bottom shell assembly, 2, a face shell assembly, 3, a main shaft, 11, a base, 12, a switch signal part, 13, a wiring terminal, 14, a sealing plug, 15 a first main shaft, 16, a cam, 17, a buckle part, 21, a face shell, 22, an indication rotary disc, 23, a rotary disc shield, 24, an indication sealing ring, 25, a second main shaft, 26, the buckle part, 27, a first fastener, 28, a second fastener, Y1, a first explosion-proof combination surface, Y2, a second explosion-proof combination surface, and an X and plane explosion-proof combination surface.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 4-5, an embodiment of the present invention includes:

a valve signal responder comprises a bottom shell assembly 1 and a face shell assembly 2, wherein the bottom shell assembly 1 comprises a base 11, a switch signal piece 12, a binding post 13, a sealing plug 14 and a first main shaft 15; the face shell assembly 2 comprises a face shell 21, an indicating dial 22, a dial guard 23, an indicating seal 24 and a second spindle 25. Wherein a cam 16 is arranged on the first main shaft 15.

The switch signal part 12 and the wiring terminal 13 of the bottom shell component 1 are fixedly arranged in the cavity of the base 11; the first main shaft 15 is movably mounted in the base 11 by a fastener 17. The first spindle 15 can rotate in the base 11, and the switching signal element 12 is triggered by a cam 16 fixed to it to generate a switching value signal. Meanwhile, the first main shaft 15 and the bottom case 11 form a cylindrical first flameproof bonding surface Y1, and the axial direction of the first flameproof bonding surface Y1 is the same as the direction of the first main shaft 15.

The second main shaft 25 of the face housing assembly 2 is mounted in the face housing 21 by a snap 26, the indicating dial 23 is fixed to the second main shaft 25, and the dial cover 23 covers the indicating dial 22 and is fixed to the face housing 21 by a first fastener 27. Meanwhile, the second main shaft 25 and the face shell 21 form a cylindrical second flameproof junction surface Y2, and the axial direction of the second flameproof junction surface Y2 is consistent with the direction of the second main shaft 25.

In the above, the bottom shell component 1 and the face shell component 2 are attached to form the plane explosion-proof junction surface X, and are fixed by the second fastener 28.

Further, the second main shaft 25 is consistent with the first main shaft 15 in the axial direction, is connected along the axial direction, and is perpendicular to the plane explosion-proof junction surface X formed by the base assembly 1 and the face shell assembly 2. Namely: and the first flameproof joint surface Y1 and the second flameproof joint surface Y2 are both vertical to the flameproof joint surface X.

The first flameproof joint surface Y1 and the second flameproof joint surface Y2 are connected through the first main shaft 15 and the second main shaft 25.

The working principle is as follows: when the lead is mounted, the sealing plug 14 is removed, and the external part is connected to the terminal 13 through the through hole of the sealing plug. The terminal 13 has a lead connecting the switch signal element 12. The external rotating part is coupled to the first spindle 15 and drives the second spindle 25 in rotation during the rotation. The cams 16 are arranged according to a certain angle, when the first main shaft 15 and the second main shaft 25 rotate to a certain position, the protruding parts of the cams 16 trigger the switch signal part 12, the switch signal part 12 changes the signal characteristics, the electric signals in the lead wires change, the change state semaphore is output, and the function of converting the mechanical signals into the electric signals is realized.

Compared with the prior art, the valve signal responding device provided by the utility model has the following distinguishing characteristics:

1. although fig. 1 and the utility model discloses only the whole difference that divides the body of main shaft, the actual installation flow is as follows, lift off first fastener 27, take off carousel guard 23, instruct carousel 22, instruct sealing washer 24, loosen fastener 29, lift off second fastener 28, open face-piece 21, lead wire access terminal 13, cover face-piece 21, go up second fastener 28, fastener 26, installation instruction sealing washer 24, instruct carousel 22, carousel guard 23, go up first fastener 27, the installation for the utility model discloses the process is extremely complicated, and fastener damages easily. In the installation process of the utility model, the second fastener 28 is only dismounted, the face shell component 2 is opened, the lead is connected with the binding post 13, and the face shell component 2 is fastened, thus the installation can be completed;

2. the main shaft in fig. 2 and 3 adopts a split structure, so that the installation is relatively convenient, but three flameproof joint surfaces are coaxial and equidirectional, the gap requirements are mutually restricted, and the flameproof grade is reduced under the same condition.

The utility model discloses a first flame proof faying face Y1 perpendicular to flame proof faying face X, second flame proof faying face Y2 perpendicular to flame proof faying face X, flame proof faying face Y1 and Y2 are through first main shaft 15 and second main shaft 25 loose joint, and the whole associativity requirement is not high, can satisfy the flame proof grade that is far above the traditional architecture under the same conditions.

To sum up, the utility model provides a valve signal echo ware, the main shaft adopts split type structure, it is relatively convenient to install, the equal perpendicular to flame proof faying face of first flame proof faying face and second flame proof faying face, and first flame proof faying face and second flame proof faying face are through first main shaft and the loose connection of second main shaft, the whole associativity requirement is not high, can satisfy the flame proof grade far above the traditional structure under the same condition, specially adapted flame proof shell "d" type valve signal echo ware, have advantages such as processing is simple, convenient assembling, explosion-proof grade height.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A valve transponder, comprising:

2. The valve signal responder according to claim 1, wherein the switch signal element and the terminal post are fixedly arranged in a cavity of the base, and the first spindle is movably arranged in the base by a fastener.

3. The valve transponder of claim 2, wherein the first spindle has a cam disposed thereon.

4. The valve transponder of claim 3, wherein the first spindle rotates within the base and generates the on-off signal by a cam-activated switch signal member secured thereto.

5. The valve signal responder according to claim 1, wherein the second spindle is mounted in the face housing by a snap-fit, the indicating dial is fixed to the second spindle, and the dial shield covers the indicating dial and is fixed to the face housing by the first fastener.

6. The valve transponder according to claim 1, wherein the first flameproof junction surface and the second flameproof junction surface are perpendicular to the flameproof junction surface.

7. The valve transponder according to claim 1, wherein the first flameproof junction surface and the second flameproof junction surface are connected by a first main shaft and a second main shaft.