CN216349292U - Novel diaphragm type pressure gauge center seat - Google Patents

Abstract

The utility model relates to a novel center seat of a diaphragm pressure gauge, which is characterized by comprising a center seat body, wherein the outer side wall of the center seat body is provided with a flange; the small through hole is connected with the cavity and the external space; the technical scheme of the utility model overcomes the problem that possible media (gas or oil) leak from the bottom end in the prior art; the fixing can be realized in a spin riveting mode, so that the screw screwing process and the screw cost are saved; the bottom end of the central seat is shorter, and the height of the pressure gauge can be very thin; the small-hole drill bit is short, the drilled hole is not eccentric, and a finished product can be manufactured through one-time clamping.

Description

Novel diaphragm type pressure gauge center seat

Technical Field

The utility model relates to the technical field of industrial instruments, in particular to a novel central seat of a diaphragm type pressure gauge.

Background

The diaphragm pressure gauge consists of four parts, including diaphragm part, core part, pointer part and casing connecting part. The diaphragm of the diaphragm pressure gauge is used as an elastic element of the gauge, when the pressure of a measured medium acts on the diaphragm, the diaphragm generates a displacement which is transmitted to the movement part, and the movement part drives the pointer part to work, so that the pressure to be measured is indicated on the dial.

In the prior art, the utility model discloses a diaphragm type pressure gauge diaphragm and shell structure assembly with the name of CN2470813, and discloses the diaphragm type pressure gauge diaphragm and shell structure assembly with the diaphragm easy to weld and fix and difficult to fall off, wherein the diaphragm type pressure gauge diaphragm and shell structure assembly comprises a shell and a diaphragm, the shell consists of a connecting seat and a shell sleeve, the diaphragm is fixedly connected to an outer peripheral wall of one end of the connecting seat in a ring sleeve manner, and the shell sleeve is fixedly connected to an outer peripheral wall of the diaphragm in the ring sleeve manner; the outer sides of the matching parts of the connecting seat and the shell are provided with chamfers to form a chamfer ring, and a welding ring is sealed in the chamfer ring to fixedly connect the connecting seat, the diaphragm and the shell together. The technical problem that this technical scheme hopes to solve is diaphragm welding difficulty and easy dropout problem.

The utility model discloses a diaphragm pressure gauge with a notice number CN201034768, which is characterized in that a diaphragm and a movement are arranged in a shell, a diaphragm seat is connected in the shell through a fixing screw, the diaphragm is connected with the diaphragm seat, an axial through hole is formed in the fixing screw, and a clamp spring is embedded in the shell and positioned at the upper edge of the diaphragm seat. The pressure gauge obtained by the technical scheme of the design is suitable for being used as a gas pressure gauge.

The utility model of the publication number CN112146808A discloses an assembly structure of a diaphragm pressure gauge, which is a structure capable of quickly assembling internal components of the pressure gauge, and comprises a top plate, a nameplate, an upper support frame and a lower support frame, wherein the support frames are respectively provided with spaces for assembling core components from top to bottom, and the nameplate and the upper support frame are positioned, so that the correction time required in locking can be reduced, and a screwing component locked on the core components is combined with a gasket to reduce the complicated screwing steps; borrow this and installing manometer inner assembly, can promote the efficiency of personnel's assembly to reach the purpose of fast assembly. This technical scheme has proposed the solution around the technical problem of diaphragm formula manometer each part equipment.

In the prior art, a copper center seat of a diaphragm type pressure gauge has large holes inside and small holes outside due to functional requirements, and a cutter cannot stretch into the center seat and is difficult to machine. In the traditional method, a large hole is drilled at the bottom, a thin wall is reserved on the end face of the large hole, then a small through hole is drilled, and then tapping is carried out on the basis of the large hole for locking a screw and dispensing and sealing. However, the structure has many and complex processes, and the processing mode has the defects of low processing efficiency, high processing cost and the like, so that the popularization and application of the diaphragm pressure gauge are greatly limited, and the application popularization rate of the diaphragm pressure gauge is far lower than that of the traditional Buton tube pressure gauge.

Therefore, aiming at the fine function requirement and the multi-component characteristic of the diaphragm type pressure gauge product, the reasonable design of each component can meet the objective requirements of simple processing, easy assembly and stable performance. The rational design of the central seat part of the diaphragm pressure gauge contributes to achieving the above objectives.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defects of multiple processing procedures and difficulty in processing of the copper center seat of the diaphragm pressure gauge in the prior art, the technical scheme of the utility model provides a novel center seat of the diaphragm pressure gauge.

The purpose of the utility model is realized by the following technical scheme.

The utility model provides the following technical scheme for the novel central seat of the diaphragm type pressure gauge.

In the technical scheme of the utility model, the novel diaphragm pressure gauge center seat comprises a center seat body, wherein a flange is arranged on the outer side wall of the center seat body, a cavity is arranged on the center line of the center seat body and is used for accommodating a rotating shaft part of the diaphragm pressure gauge, the middle part of the cavity is of a cylindrical structure, the top of the cavity is of a round platform structure formed by extruding and shrinking a hole on the center seat body, and a small through hole is arranged on the top of the center seat body; the small through hole connects the cavity and the external space.

Furthermore, the small through hole is formed by mechanical processing after the top of the central seat body is subjected to extrusion shrinkage;

furthermore, the bottom formed by the bottom wall of the cavity can be a flat-bottom structure, and also can be a conical structure with a downward conical tip or a circular truncated cone structure; preferably, the bottom formed by the bottom wall of the cavity is of a conical structure;

further, the flange is positioned below the center seat midline;

further, the center seat used for fixing and connecting can be a copper center seat, an aluminum alloy center seat, a titanium alloy center seat, an aluminum alloy center seat or a center seat made of inorganic materials such as ceramics; preferably a copper center seat;

furthermore, the center seat in the technical scheme of the utility model is beneficial to fixing by spin riveting, screw caps or welding, wherein the spin riveting fixing mode is preferred, and the spin riveting mode is beneficial to reducing the thickness of the pressure gauge.

In the center seat in the prior art, the outer diameter of a blank is firstly turned, and a flange is turned at the same time; then drilling big holes and then drilling small holes; then cutting off and reversely clamping; and finally tapping. When the machined part is not tightly sealed, a medium (gas or oil) can enter from a screw thread gap and leak from a small hole, so that the pressure of the pressure gauge is unstable. Simultaneously, this scheme still exists needs glue cooperation screw seal, the bottom size is longer, manometer thickness defects such as higher, and the drill bit of boring the aperture is longer moreover, appears easily disconnected and aperture off-centre scheduling problem.

According to the technical scheme, the machining method of the center seat comprises the steps of firstly turning the outer diameter of a blank, then drilling a large hole from the upper end, extruding a contracted hole from the upper end of the side face, finally drilling a small hole, and cutting.

Compared with the prior art, the technical scheme of the utility model overcomes the problem that possible media (gas or oil) leak from the bottom end in the prior art; the fixing can be realized in a spin riveting mode, so that the screw screwing process and the screw cost are saved; the bottom end of the central seat is shorter, and the height of the pressure gauge can be very thin; the small-hole drill bit is short, the drilled hole is not eccentric, and a finished product can be manufactured through one-time clamping.

Drawings

FIG. 1 is a schematic cross-sectional view of a prior art blank;

FIG. 2 is a schematic cross-sectional view of a prior art product;

FIG. 3 is a schematic cross-sectional view of a blank according to one embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a product according to the technical scheme of the utility model.

Reference numerals

1, a central seat body; 2, a flange; 3, a large through hole; 4 small through holes 5, and a cavity bottom wall 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the specification of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

One embodiment of the present invention is described in detail below with reference to fig. 1-4:

fig. 4 is a schematic cross-sectional view of a product according to a technical solution of the present invention, and as shown in fig. 4, a novel diaphragm pressure gauge center seat designed according to the technical solution of the present invention includes a center seat body 1, a flange 2 is disposed on an outer side wall of the center seat body 1, a cavity 5 is disposed on a center line of the center seat body 1, the cavity 5 is used for accommodating a rotating shaft component of the diaphragm pressure gauge, a middle portion of the cavity 5 is a cylindrical structure, in the present embodiment, a cavity bottom wall 6 of the cavity 5 forms a conical bottom structure with a downward conical tip, an upper end of the cavity 5 is a conical frustum structure formed by the center seat body 1 through compression and shrinkage, and a small through hole 4 is disposed at a top of the center seat body 1; the small through hole 4 connects the cavity 5 and the external space.

Fig. 1 and 2 are a schematic cross-sectional view of a prior art blank and a schematic cross-sectional view of a prior art center seat product, respectively, and it can be seen from fig. 1 and 2 that the flange 2 is located above the center line, i.e., the bottom end of the center seat product for fixed mounting is longer. As can be seen from fig. 3 and 4, the flange 2 is located below the center line, and the bottom end of the center seat product for fixed installation is shorter, which is beneficial to reducing the overall thickness of the diaphragm pressure gauge.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present embodiments be considered in all respects as illustrative and not restrictive, the scope of the utility model 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.

The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the technical concept and the protection scope of the present invention, and various modifications and improvements made to the technical concept by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims (8)

1. A novel center seat of a diaphragm pressure gauge is characterized by comprising a center seat body (1), wherein a flange (2) is arranged on the outer side wall of the center seat body (1), a cavity (5) is arranged on the central line of the center seat body (1), the cavity (5) is used for accommodating a rotating shaft component of the diaphragm pressure gauge, the middle part of the cavity (5) is of a cylindrical structure, the top of the cavity (5) is of a round platform structure formed by extruding and shrinking a hole on the center seat body, and a small through hole (4) is formed in the top of the center seat body (1); the small through hole (4) connects the cavity (5) and the external space.

2. The new center seat of diaphragm pressure gauge according to claim 1, wherein the bottom of the cavity bottom wall (6) of the cavity (5) is a flat bottom structure, or a conical structure or a circular truncated cone structure.

3. The new center seat of diaphragm pressure gauge as claimed in claim 2, wherein the bottom of the cavity bottom wall (6) of the cavity (5) is a conical structure.

4. A new center seat of a diaphragm pressure gauge according to any one of claims 1 to 3, wherein said flange (2) is located below the center line of said center seat.

5. A new center seat of a diaphragm pressure gauge according to any one of claims 1-3, characterized in that said center seat body (1) is a copper center seat body (1), an aluminum alloy center seat body (1), a titanium alloy center seat body (1), an aluminum alloy center seat body (1) or a ceramic material center seat body (1).

6. The new center seat of diaphragm pressure gauge according to claim 5, characterized in that said center seat body (1) is a copper center seat body (1).

7. The novel center seat of a diaphragm pressure gauge according to any one of claims 1 to 3, wherein the center seat body (1) is fixed by spin riveting, screw cap or welding.

8. The center seat of the novel diaphragm pressure gauge according to claim 7, wherein the center seat body (1) is fixed by spin riveting.

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