CN209818745U

CN209818745U - Waterproof sealing structure of electropneumatic valve positioner

Info

Publication number: CN209818745U
Application number: CN201920648341.8U
Authority: CN
Inventors: 孙燕飞; 马乐成
Original assignee: CHANGSHU HUAXIA INSTRUMENT Co Ltd
Current assignee: CHANGSHU HUAXIA INSTRUMENT Co Ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2019-12-20
Anticipated expiration: 2029-05-08

Abstract

The utility model discloses a waterproof sealing structure of an electric valve positioner, which comprises a shell base and a shell cover plate which are fastened into a whole through screws, and an internal installation space for installing an electric control component of the electric valve positioner is provided, wherein the shell base and the shell cover plate are also in sealing joint through a tooth-shaped labyrinth structure; the utility model discloses a to self structure improvement, avoided the consumption of sealing washer, sealed waterproof nature is good and effectively reduced the utility model discloses a cost.

Description

Waterproof sealing structure of electropneumatic valve positioner

Technical Field

The utility model belongs to electropneumatic valve locator product manufacturing field, the utility model particularly relates to a waterproof sealing structure of electropneumatic valve locator.

Background

The electro-pneumatic valve positioner is a main accessory of the regulating valve and is widely applied to a plurality of product fields. The electric valve positioner mainly comprises an electric control component and an instrument device, wherein the electric control component is usually installed in a closed shell formed by connecting an upper shell and a lower shell through screws in order to realize the installation protection of the electric control component. However, the existing electro-pneumatic valve positioner housings are still poor in waterproof sealing performance and installation convenience.

For example, the utility model with the publication number of CN208565730A discloses a closed housing of an electric valve positioner, which comprises a bottom shell and a face shell covering the bottom shell, wherein the bottom shell and the face shell are locked and fixed by a fastener, and a sealing ring is arranged between the face shell and the bottom shell; however, the sealing ring is only mounted on the end face and is not provided with other limiting structures, so that the sealing ring is easy to deviate in the mounting and using processes, and further sealing failure is caused.

Accordingly, applicants have desired improvements to the housing components of electrical valve positioners based on years of experience in the manufacture of electrical valve positioner products.

Disclosure of Invention

In view of this, the utility model aims at providing a waterproof sealing structure of electropneumatic valve locator through improving self structure, has avoided the consumption of sealing washer, and waterproof sealing nature is good and effectively reduced the utility model discloses a cost.

The utility model adopts the technical scheme as follows:

the utility model provides a waterproof sealing structure of electric valve locator, includes through casing base and the casing apron of screw fastening as an organic whole, has the internally mounted space that is used for installing the automatically controlled components and parts of electric valve locator, wherein, casing base and casing apron still realize sealed joint through tooth type labyrinth column structure.

Preferably, the installation end face of the shell base is provided with a tooth-shaped groove, the installation end face of the shell cover plate is provided with a tooth-shaped lug which is in sealing clamping connection with the tooth-shaped groove, and the tooth-shaped groove and the tooth-shaped lug of the sealing clamping connection form the tooth-shaped labyrinth structure.

Preferably, a plurality of reinforcing rib sheets in a triangular shape are arranged on the inner wall of the shell base.

Preferably, the casing base adopts cast aluminum formed part, the casing apron adopts transparent material.

Preferably, the air inlet passage port and the air outlet passage port of the electric valve positioner are respectively arranged on the side surface of the housing base in parallel.

Preferably, the air inlet passage port and the air outlet passage port are both hexagonal conical surfaces, and the air inlet passage port or the air outlet passage port is provided with a mounting hole for mounting a control instrument.

The utility model discloses creatively proposes to pass through tooth type labyrinth column structure with casing base and casing apron and realize sealed joint, avoided the consumption of sealing washer, sealed waterproof nature is good and effectively reduced the utility model discloses a cost.

Drawings

Fig. 1 is a schematic structural diagram of a waterproof sealing structure 100 of an electric valve positioner according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1

FIG. 3 is a cross-sectional view of FIG. 1;

fig. 4 is an enlarged schematic view of the structure at a in fig. 3.

Detailed Description

The embodiment of the utility model discloses waterproof sealing structure of electric valve locator, include through casing base and the casing apron of screw fastening as an organic whole, have the internally mounted space that is used for installing the automatically controlled components and parts of electric valve locator, wherein, casing base and casing apron still realize sealed joint through flute profile maze column structure.

The embodiment of the utility model provides a creatively proposes to pass through flute profile labyrinth column structure with casing base and casing apron and realizes sealed joint, has avoided the consumption of sealing washer, and waterproof sealing nature is good and effectively reduced the utility model discloses a cost.

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Please refer to fig. 1, fig. 2 and fig. 3, which illustrate a waterproof sealing structure 100 of an electric valve positioner, comprising a housing base 110 and a housing cover plate 120 fastened together by screws (not shown), and an internal installation space 130 for installing electric control components of the electric valve positioner, wherein the housing base 110 and the housing cover plate 120 are further in sealing engagement by a tooth-shaped labyrinth structure 140; preferably, the housing base 110 is made of a cast aluminum molded part, the housing cover plate 120 is made of a transparent material, and the housing cover plate 120 made of the transparent material can facilitate people to observe the internal state of the electric valve positioner, so that the maintenance is facilitated;

preferably, as further shown in fig. 4, in the present embodiment, a tooth-shaped groove 111 is disposed on the mounting end surface of the housing base 110, a tooth-shaped protrusion 121 sealingly engaged with the tooth-shaped groove 111 is disposed on the mounting end surface of the housing cover 120, and the tooth-shaped groove 111 and the tooth-shaped protrusion 121 sealingly engaged form a tooth-shaped labyrinth structure 140; in other embodiments of the present invention, the number of the tooth-shaped grooves in the tooth-shaped labyrinth structure 140 may be multiple, which may be specifically determined according to the waterproof grade of the environment in which the electric valve positioner is applied;

preferably, in this embodiment, the inner wall of the housing base 110 has a plurality of reinforcing ribs 112 in a triangular shape;

preferably, in the present embodiment, the inlet passage port 150 and the outlet passage port 160 of the electric valve positioner are respectively provided in parallel on the side surface of the housing base 110; further preferably, in the present embodiment, both the inlet channel port 150 and the outlet channel port 160 are hexagonal conical surfaces, and the inlet channel port 150 or the outlet channel port 160 is provided with a mounting hole 170 for mounting a control instrument, specifically, in the present embodiment, the inlet channel port 150 is provided with a mounting hole 170 for mounting a control instrument.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a waterproof sealing structure of electric valve locator, includes through casing base and the casing apron of screw fastening as an organic whole, has the internally mounted space that is used for installing the automatically controlled components and parts of electric valve locator, its characterized in that, casing base and casing apron still realize sealed joint through tooth type labyrinth column structure.

2. The electrically actuated valve positioner waterproof sealing structure of claim 1, wherein the housing base has a tooth-shaped groove on a mounting end surface thereof, the housing cover has a tooth-shaped protrusion thereon, the tooth-shaped groove and the tooth-shaped protrusion constitute the tooth-shaped labyrinth structure.

3. The electrically actuated valve positioner watertight seal structure of claim 1 wherein said housing base has a plurality of triangularly shaped reinforcing ribs on the inner wall.

4. The electrically actuated valve positioner watertight seal structure as defined in claim 1, wherein said housing base is formed from a cast aluminum molding and said housing cover is formed from a transparent material.

5. The electrically actuated valve positioner watertight seal structure of claim 1, wherein the inlet passage port and the outlet passage port of the electrically actuated valve positioner are respectively provided in parallel on the side surface of the housing base.

6. The electrically actuated valve positioner waterproof sealing structure of claim 5, wherein the inlet passage port and the outlet passage port are each in a hexagonal conical shape, and the inlet passage port or the outlet passage port is provided with a mounting hole for mounting a control instrument.