Protective shell of electropneumatic valve positioner

Abstract

The utility model provides an electro-pneumatic valve positioner protective shell which comprises a lower shell part and an upper shell part, a front end sealing plate and a rear end sealing plate which are integrally formed are arranged at the two ends of the lower shell part respectively, a guide rod installation part connected with the rear end sealing plate is arranged at one corner of the front end sealing plate, a round rod part is installed on the inner side of the guide rod installation part, and the round rod part is connected with the guide rod installation part. Positioning hole seats are arranged at the two ends of the round rod part, and a metal support is installed at one ends of the two positioning hole seats. The guide rod mounting part connected with the rear end sealing plate is arranged at one corner of the front end sealing plate, the round rod part is mounted on the inner side of the guide rod mounting part, the positioning hole seats are arranged at the two ends of the round rod part, and the metal support is mounted through the positioning hole seats, so that the shell structure can be conveniently and quickly connected with a regulating valve system; installation is achieved without the help of an installation mechanism, in this way, installation convenience and follow-up disassembly convenience can be guaranteed, and meanwhile it can be avoided that installation of components is guaranteed in the installation process.

Description

A protective housing for an electric valve positioner Technical Field

[0001] This utility model belongs to the field of protective housing technology and relates to a protective housing for an electric valve positioner. Background Technology

[0002] Electric valve positioners are key accessories for control valves and are widely used in various product sectors. They primarily consist of electrical control components and instrumentation devices. To protect the electrical control components, they are typically housed in a sealed casing consisting of an upper and lower housing connected by screws. However, existing electric valve positioner housings still fall short in terms of sealing performance, waterproofing, and ease of installation.

[0003] Existing technology, such as the protective housing of an electric valve positioner disclosed in patent application number CN201920648343.7, includes a housing base and a housing cover plate fastened together by screws. It has an internal mounting space for installing the electrical control components of the electric valve positioner. Sealing grooves are provided around the mounting end faces of the housing base and housing cover plate, and sealing rings are installed within the sealing grooves. Specifically, the four corners of the mounting end face of the housing base are provided with semi-circular mounting bosses for setting screw mounting holes. The screw mounting holes are fastened to the housing cover plate by screws, and the sealing grooves are located outside the screw mounting holes to securely limit the sealing ring located within the sealing grooves. This solution achieves secure limiting of the sealing ring, preventing its displacement and ensuring the long-term sealing and waterproof performance of this invention.

[0004] While the aforementioned housing structure solves the sealing problem, it requires an additional installation mechanism for bolt tightening during installation and lacks its own installation structure. Therefore, we have designed a protective housing for an electric valve positioner. Summary of the Invention

[0005] The purpose of this utility model is to provide a protective housing for an electric valve positioner to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solution: A protective housing for an electric valve positioner, comprising a lower housing and an upper housing. The upper part of the lower housing has an installation space at its top center for installing the electrical control components of the electric valve positioner. The lower housing covers the installation space and is fastened to the lower housing. An integrally formed front end plate and a rear end plate are respectively provided at both ends of the lower housing. A guide rod mounting part is connected to the rear end plate at one corner of the front end plate. A round rod is installed on the inner side of the guide rod mounting part. Positioning holes are provided at both ends of the round rod. A metal bracket is installed at one end of each of the two positioning holes.

[0007] In the aforementioned protective housing for an electric valve positioner, an air inlet thread and an exhaust thread are installed on one side of the front end sealing plate, and the air inlet thread and the exhaust thread are hexagonal conical in shape.

[0008] In the above-mentioned protective housing for an electric valve positioner, a crossbeam mounting bracket located in the installation space is provided between the front end sealing plate and the rear end sealing plate, and threaded inner sleeves are installed at both ends of the crossbeam mounting bracket.

[0009] In the above-mentioned protective housing for an electric valve positioner, two screw recesses are installed on the front of the upper housing, and a locking screw is installed inside each of the two screw recesses. The locking screw is threadedly connected to the threaded inner sleeve.

[0010] In the aforementioned protective housing for an electric valve positioner, two sets of heat dissipation blind holes are provided on the inner side of the rear end sealing plate.

[0011] In the above-mentioned protective housing for an electric valve positioner, an L-shaped limiting frame is installed at the top of the lower housing. One end of the L-shaped limiting frame is engaged with the rear end sealing plate, thereby pressing the L-shaped limiting frame against the upper housing.

[0012] Compared with existing technologies, the advantages of this utility model's protective housing for an electric valve positioner are as follows: A guide rod mounting part connects to the rear end end end end end end end end at one corner of the front end end end end end end. A round rod part is mounted on the inner side of the guide rod mounting part, and positioning holes are provided at both ends of the round rod part, with metal brackets mounted using these positioning holes. This facilitates quick connection of the housing structure to the regulating valve system without the need for an installation mechanism, ensuring ease of installation and subsequent disassembly, while also preventing damage to the installation components during installation. A crossbeam mounting bracket is provided between the front and rear end ... Attached Figure Description

[0013] Figure 1 is a three-dimensional structural diagram of a protective housing for an electric valve positioner according to this utility model.

[0014] Figure 2 is a three-dimensional structural diagram of the front end sealing plate of the protective housing of an electric valve positioner according to this utility model.

[0015] Figure 3 is a three-dimensional structural diagram of the lower housing part of the protective housing of an electric valve positioner according to this utility model.

[0016] In the diagram, 1. Lower housing; 2. Upper housing; 3. Screw recess; 4. Locking screw; 5. Front end plate; 6. Rear end plate; 7. Inlet threaded port; 8. Exhaust threaded port; 9. L-shaped limit bracket; 10. Guide rod mounting part; 11. Round rod part; 12. Positioning hole seat; 13. Metal bracket; 14. Installation space; 15. Crossbeam mounting bracket; 16. Threaded inner sleeve; 17. Heat dissipation blind hole. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] As shown in Figures 1, 2 and 3, this utility model provides a protective housing for an electric valve positioner.

[0019] Example 1: The protective housing includes a lower housing part 1 and an upper housing part 2. The top center of the lower housing part 1 has an installation space 14 for installing electrical valve positioner control components. The lower housing part 1 covers the installation space 14 and is fastened to the lower housing part 1. The two ends of the lower housing part 1 are respectively provided with an integrally formed front end plate 5 and a rear end plate 6. A guide rod mounting part 10 is connected to the rear end plate 6 at one corner of the front end plate 5. A round rod part 11 is installed on the inner side of the guide rod mounting part 10. Both ends of the round rod part 11 are provided with positioning hole seats 12. A metal bracket 13 is installed at one end of the two positioning hole seats 12.

[0020] As shown in Figure 1, in order to facilitate the connection of the intake and exhaust pipes, an intake threaded port 7 and an exhaust threaded port 8 are installed on one side of the front end plate 5. The intake threaded port 7 and the exhaust threaded port 8 are hexagonal conical in shape; the hexagonal conical shape can ensure the sealing of the connection.

[0021] This solution allows for quick connection of the housing structure to the regulating valve system without the need for an installation mechanism. This ensures ease of installation and subsequent disassembly, while also preventing damage to the installation components during the installation process.

[0022] Example 2: The protective housing includes a lower housing part 1 and an upper housing part 2. The top center of the lower housing part 1 has an installation space 14 for installing electrical valve positioner and electrical control components. The lower housing part 1 covers the installation space 14 and is fastened to the lower housing part 1. The two ends of the lower housing part 1 are respectively provided with an integrally formed front end plate 5 and a rear end plate 6. A crossbeam mounting bracket 15 located in the installation space 14 is provided between the front end plate 5 and the rear end plate 6. Threaded inner sleeves 16 are installed at both ends of the crossbeam mounting bracket 15. The front of the upper housing part 2 is provided with two screw recesses 3. Locking screws 4 are installed inside the two screw recesses 3. The locking screws 4 are threadedly connected to the threaded inner sleeves 16.

[0023] Furthermore, as shown in Figure 1, an L-shaped limiting bracket 9 is installed at the top of the lower housing 1. One end of the L-shaped limiting bracket 9 is engaged with the rear end sealing plate 6, thereby pressing the L-shaped limiting bracket 9 against the upper housing 2.

[0024] This solution can securely limit the lower housing part 1 and the upper housing part 2, ensuring the stability of the connection between the lower housing part 1 and the upper housing part 2.

[0025] As shown in Figure 3, in order to ensure that the shell has good heat conduction, two sets of heat dissipation blind holes 17 are provided on the inner side of the rear end plate 6.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A protective housing for an electric valve positioner, comprising a lower housing portion (1) and an upper housing portion (2), wherein the upper part of the lower housing portion (1) has an installation space (14) at the middle of its top end for installing electrical control components of the electric valve positioner, the lower housing portion (1) covering the installation space (14) and being fastened to the lower housing portion (1), characterized in that, The lower housing part (1) is provided with an integrally formed front end sealing plate (5) and a rear end sealing plate (6) at both ends. A guide rod mounting part (10) is connected to the rear end sealing plate (6) at one corner of the front end sealing plate (5). A round rod part (11) is installed on the inner side of the guide rod mounting part (10). Both ends of the round rod part (11) are provided with positioning hole seats (12). A metal bracket (13) is installed at one end of the two positioning hole seats (12).

2. The protective housing for an electric valve positioner according to claim 1, characterized in that, The front end sealing plate (5) is provided with an air inlet thread (7) and an exhaust thread (8) on one side, and the air inlet thread (7) and the exhaust thread (8) are hexagonal conical in shape.

3. An electric valve positioner protection housing according to claim 1, characterized in that A beam mounting bracket (15) located in the installation space (14) is provided between the front end sealing plate (5) and the rear end sealing plate (6), and threaded inner sleeves (16) are installed at both ends of the beam mounting bracket (15).

4. The protective housing for an electric valve positioner according to claim 3, characterized in that, The upper housing part (2) has two screw recesses (3) installed on its front side. Each of the two screw recesses (3) is equipped with a locking screw (4), which is threadedly connected to the threaded inner sleeve (16).

5. An electric valve positioner protection housing according to claim 1, characterized in that The inner side of the rear end plate (6) is provided with two sets of heat dissipation blind holes (17).

6. The protective housing for an electric valve positioner according to claim 1, characterized in that, An L-shaped limiting frame (9) is installed at the top of the lower housing part (1). One end of the L-shaped limiting frame (9) is engaged with the rear end sealing plate (6) and the L-shaped limiting frame (9) is pressed against the upper housing part (2).

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