CN216559494U

CN216559494U - Shell of micro-differential pressure measuring device

Info

Publication number: CN216559494U
Application number: CN202123265844.3U
Authority: CN
Inventors: 闫一非
Original assignee: Nanjing Engma Instrument Technology Co ltd
Current assignee: Nanjing Engma Instrument Technology Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-05-17
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a micro differential pressure measuring device shell which comprises a bottom shell with an opening at the top and used for accommodating and installing a main control circuit board and a display screen, and an upper cover matched and connected with the opening of the bottom shell, wherein the upper cover is provided with a window penetrating through the cover surface, the inner bottom surface of the bottom shell is provided with a honeycomb-shaped reinforcing rib protruding out of the inner bottom surface, the window of the upper cover is provided with a transparent cover plate, and a sealing ring is arranged between the bottom shell and the upper cover. The casing of the micro-differential pressure measuring device has the advantages of high structural strength, impact resistance and difficult abrasion.

Description

Shell of micro-differential pressure measuring device

Technical Field

The utility model relates to a micro differential pressure measuring device shell.

Background

The micro-differential pressure sensor is generally installed on a wall surface, is usually installed on the outer wall of a heating ventilation pipeline, a clean workshop wall and the like in a self-tapping screw fixing mode, and is installed outdoors in a few cases.

Traditional differential pressure sensor shell is mostly imitative foreign sensor molding and overall arrangement, or uses the public mould, because lack the suitability that the specialty was used, no matter the product can't accomplish reasonable pleasing to the eye from outward appearance and inner structure, covers the PVC face skin usually on the display screen surface as the protective layer, and easy damage, but also have structural strength low, the problem of shock intolerance.

Disclosure of Invention

In order to solve the problems of low structural strength, impact resistance and easy abrasion of the traditional micro differential pressure sensor shell, the utility model provides a micro differential pressure measuring device shell.

The shell of the micro differential pressure measuring device comprises a bottom shell with an opening at the top and used for accommodating and installing a main control circuit board and a display screen, and an upper cover matched and connected with the opening of the bottom shell, wherein the upper cover is provided with a window penetrating through the cover surface, the inner bottom surface of the bottom shell is provided with a honeycomb-shaped reinforcing rib protruding out of the inner bottom surface, the window of the upper cover is provided with a transparent cover plate, and a sealing ring is arranged between the bottom shell and the upper cover.

In order to improve the wear resistance and the impact resistance, the cover plate is an acrylic plate and is fixed on the upper cover through a glue layer.

In order to improve apron connection fastness and aesthetic property, the apron shape cooperatees with the window, the global of apron is as first global, set up the round bulge loop along first circumference, bulge loop thickness is less than apron thickness, the bulge loop downside flushes with the apron downside, the part outside the bulge loop is global as the second on the first circumference, the glue film is located bulge loop top surface and second and is connected fixedly on global with the window of upper cover, the apron after fixing inlays at the window, the apron top surface flushes with the upper surface of upper cover.

In order to prevent the cover plate from being abraded and improve the aesthetic property, a concave U-shaped curved surface is arranged on the upper surface of the upper cover, and the window of the window is positioned at the bottom of the U-shaped curved surface.

In order to improve the leakproofness, prevent that steam from getting into and damaging internal element, set up the round sealing washer groove at the position that the opening of upper cover and drain pan corresponds, the sealing washer is arranged in the sealing washer groove, after drain pan and upper cover erection joint, completely cuts off inner space and external through the sealing washer.

In order to prevent water vapor from entering the micro-differential pressure measuring device, the bottom shell is connected with the upper cover through screw mounting holes and matched screws, and the screw mounting holes are respectively located on the outer sides of the bottom shell and the upper cover and located on the outer sides of the sealing rings.

Has the advantages that: the cellular reinforcing ribs are arranged in the shell of the micro differential pressure measuring device, the structural strength is high, the impact can be released at cellular nodes in the installation process, the upper cover is provided with the transparent cover plate to replace the traditional PVC (polyvinyl chloride) surface skin to protect the internal display screen, the cover plate is not easy to wear, and the cover plate is difficult to wear on the display screen even if serious wear occurs under the condition of inversion; the cover plate is made into an acrylic plate and is fixed on the upper cover by using the glue layer, so that the wear resistance and the impact resistance of the cover plate are improved; the shape of the cover plate is matched with that of the window, the peripheral surface of the cover plate is used as a first peripheral surface, a circle of convex ring is arranged along the first peripheral surface, the thickness of the convex ring is smaller than that of the cover plate, the lower side surface of the convex ring is flush with the lower side surface of the cover plate, the part of the first peripheral surface, except the convex ring, is used as a second peripheral surface, the glue layer is positioned on the upper side surface of the convex ring and the second peripheral surface and is fixedly connected with the window of the upper cover, the fixed cover plate is embedded in the window, and the upper side surface of the cover plate is flush with the upper surface of the upper cover; the connection firmness and the attractiveness of the cover plate are improved; the concave U-shaped curved surface is arranged on the upper surface of the upper cover, and the window of the window is positioned at the bottom of the U-shaped curved surface, so that the cover plate is prevented from being abraded and the attractiveness is improved; the sealing ring groove is formed in the position, corresponding to the opening of the bottom shell, of the upper cover, the sealing ring is located in the sealing ring groove, and after the bottom shell and the upper cover are installed and connected, the inner space is isolated from the outside through the sealing ring, so that the sealing performance is improved, and water vapor is prevented from entering and damaging internal elements; the bottom shell and the upper cover are respectively provided with the screw mounting holes and are fastened by screws, and the screw mounting holes are positioned on the outer side of the sealing ring, so that water vapor is prevented from entering the micro differential pressure measuring device.

Drawings

Fig. 1 is a schematic structural view of a casing of a micro differential pressure measurement device according to embodiment 1 of the present invention;

FIG. 2 is a schematic view of the internal structure of the bottom case;

FIG. 3 is a schematic structural view of the upper cover;

FIG. 4 is a side cross-sectional view of the upper cover and the cover plate;

FIG. 5 is a schematic structural view of a cover plate;

FIG. 6 is a side sectional view of the upper cap and the cap plate in embodiment 2;

in the figure, 1, a bottom shell; 11. honeycomb reinforcing ribs; 2. an upper cover; 21. a seal ring groove; 22. a U-shaped curved surface; 3. a cover plate; 31. a convex ring; 32. a second peripheral surface; 4. and (5) sealing rings.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

Example 1

As shown in fig. 1-5, a micro differential pressure measuring device shell comprises a bottom shell 1 with an open top for accommodating a main control circuit board and a display screen, and an upper cover 2 matched with the opening of the bottom shell 1, wherein the upper cover 2 is provided with a window penetrating through the cover surface, a honeycomb reinforcing rib 11 protruding from the inner bottom surface is arranged on the inner bottom surface of the bottom shell 1, a transparent cover plate 3 is arranged on the window of the upper cover 2, a sealing ring 4 is arranged between the bottom shell 1 and the upper cover 2, and the upper surface of the upper cover 2 is a plane.

Above-mentioned apron 3 is the ya keli board, it is the plane to go up side and downside, the shape and the window of apron 3 cooperate, apron 3 global as first global, set up round bulge loop 31 along first peripheral face, the thickness of bulge loop 31 is less than apron 3's thickness, bulge loop 31 downside flushes with 3 downside of apron, the part outside the bulge loop 31 is regarded as second peripheral face 32 on the first peripheral face, it is fixed to use viscose to scribble the window bonding that glues formation glue film and upper cover 2 on bulge loop 31 side and second peripheral face 32, apron 3 after the fixing inlays at the window, apron 3 upper flank flushes with the upper surface of upper cover 2. The cover plate 3 having the second peripheral surface 32 and the protruding ring 31 can be formed by one-step molding.

The position that corresponds with the opening of drain pan 1 on upper cover 2 sets up round sealing washer groove 21, and sealing washer 4 is arranged in sealing washer groove 21, sets up the screw mounting hole respectively at drain pan 1 and upper cover 2, uses the matched with screw to fasten, installs upper cover 2 on drain pan 1, and the screw mounting hole is located the sealing washer 4 outside, and is independent unit, has waterproof function, and with sealing washer 4 with inner space isolated with external, prevent that steam from getting into together. Other, non-mentioned parts of the housing of the micro differential pressure measuring device refer to the prior art.

Example 2

In embodiment 1, a concave U-shaped curved surface 22 is provided on the upper surface of the upper lid 2, and the window is located at the bottom of the U-shaped curved surface 22. Except for this, the structure of the upper cover is as shown in fig. 6, as in example 1.

As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a little differential pressure measuring device shell, includes open-top's the drain pan that is used for holding installation master control circuit board and display screen, the upper cover of being connected with the opening cooperation of drain pan, and the upper cover has the window that link up the capping, and its characterized in that, the honeycomb strengthening rib of bottom surface in the bottom surface sets up the protrusion in the drain pan, sets up transparent apron at the window of upper cover, sets up the sealing washer between drain pan and upper cover.

2. The differential pressure measurement device shell of claim 1, wherein the cover plate is an acrylic plate and is fixed on the upper cover through a glue layer.

3. The casing of claim 2, wherein the cover plate is shaped to fit the window, the cover plate is a first surface, a ring of protruding ring is disposed along the first surface, the protruding ring has a thickness smaller than that of the cover plate, the lower surface of the protruding ring is flush with the lower surface of the cover plate, the part of the first surface other than the protruding ring is a second surface, the glue layer is fixed to the upper surface of the protruding ring and the second surface of the protruding ring and is connected to the window of the upper cover, the fixed cover plate is embedded in the window, and the upper surface of the cover plate is flush with the upper surface of the upper cover.

4. The differential pressure measurement device housing of claim 3, wherein a concave U-shaped curved surface is provided on the upper surface of the upper cover, and the window is located at the bottom of the U-shaped curved surface.

5. The casing of claim 4, wherein a sealing ring groove is formed at a portion of the upper cover corresponding to the opening of the bottom case, and the sealing ring is positioned in the sealing ring groove.

6. The casing of claim 5, wherein the bottom casing is fastened to the top cover by screw holes and mating screws, the screw holes being located on the bottom casing and the top cover, respectively, and outside the sealing ring.