CN208704949U - A kind of double diaphragm differential pressure gauges - Google Patents
A kind of double diaphragm differential pressure gauges Download PDFInfo
- Publication number
- CN208704949U CN208704949U CN201821258781.4U CN201821258781U CN208704949U CN 208704949 U CN208704949 U CN 208704949U CN 201821258781 U CN201821258781 U CN 201821258781U CN 208704949 U CN208704949 U CN 208704949U
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- screw thread
- differential pressure
- shell
- cover board
- pressure gauges
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Abstract
The utility model relates to a kind of double diaphragm differential pressure gauges, including shell, cover board, spiral cover and indicator, the cover board setting is on the shell, the shell edge is equipped with external screw thread, external screw thread is arranged in shell side, the cover board has annular edge, annular edge projection is in side edge thereof, the spiral cover has first step portion, pressing plate and internal screw thread, first step portion is arranged on the outside of spiral cover, annular edge is resisted against on shell, internal screw thread and pressing plate are arranged on the inside of spiral cover, pressing plate is located above internal screw thread, pressing plate compresses annular edge, internal screw thread and external screw thread are coupled, the indicator has card slot and instruction unit, instruction unit setting is square on the cover board, card slot and first step portion are clamped.A kind of double diaphragm differential pressure gauges of the utility model are convenient for assembly and disassembly, and instruction preset value can be slided by indicator, can be effectively reduced the error of observation；Meanwhile, it is capable to which double diaphragm differential pressure gauges is avoided to fall into opening during installation, facilitate installation.
Description
Technical field
The utility model relates to differential pressure gauge technical field, in particular to a kind of double diaphragm differential pressure gauges.
Background technique
Double diaphragm differential pressure gauges use bi-bellow structure, i.e. two bellowss are separately mounted to " I " fonts bracket two sides
In symmetric position.The upper and lower ends of " I " fonts bracket are respectively movable end and fixing end, and centre is connected by spring leaf；Two
Bellows is in parastate, is connected respectively with conduit in the height crimp head on watchcase；Gear drive is directly installed on
The fixing end of bracket, and be connected by pull rod with the movable end of bracket；Scale is then directly anchored on gear drive.When
When applying different pressures (general high voltage end be higher than low-pressure end), it is then unequal that two bellowss act on the power on movable support, makes
Corresponding displacement is generated respectively, and drives gear drive to be driven and gives amplification, by indicating between the two after throw of pointer
Differential pressure value.Existing double diaphragm differential pressure gauges be typically only capable to instruction differential pressure value, can not compared with default differential pressure value, for example, it is desired to
Whether observation differential pressure value exceeds preset value, then needs observer every time will be to differential pressure meter reading, to judge whether numerical value surpasses
Preset value out, accuracy is poor, is also easy to cause observer tired.
Utility model content
The utility model in order to solve problems in the prior art, provides a kind of easy for installation, convenient for observation and judgement, has
Effect reduces double diaphragm differential pressure gauges of the error of observation.
Specific technical solution is as follows: a kind of double diaphragm differential pressure gauges, including shell, cover board, spiral cover and indicator, the cover board
On the shell, the shell edge is equipped with external screw thread for setting, and external screw thread setting has annular edge in shell side, the cover board,
In side edge thereof, the spiral cover has first step portion, pressing plate and internal screw thread for annular edge projection, and first step portion is arranged in spiral cover
Outside, annular edge are resisted against on shell, and internal screw thread and pressing plate are arranged on the inside of spiral cover, and pressing plate is located above internal screw thread, and pressing plate supports
Annular edge is pressed, internal screw thread and external screw thread are coupled, and the indicator has card slot and instruction unit, and side on the cover board is arranged in instruction unit,
Card slot and first step portion are clamped.
The following are the attached technical schemes of the utility model.
Preferably, the cover board has arc-shaped side, and the instruction unit is arc, and instruction unit is bonded with arc-shaped side.
Preferably, the spiral cover has second step portion, and second step portion is arranged on the outside of spiral cover, first step
Portion is connected with second step portion.
Preferably, dial plate is equipped in the shell, dial plate is equipped with pointer, and the cover board is arranged on dial plate
Side.
Preferably, there are hollow-out parts in the middle part of the spiral cover.
Preferably, the cover board is made of clear material.
The technical effect of the utility model: a kind of double diaphragm differential pressure gauges of the utility model are convenient for assembly and disassembly, can
Instruction preset value is slided by indicator, can be effectively reduced the error of observation；Meanwhile, it is capable to avoid double diaphragm differential pressures during installation
Table is fallen into opening, facilitates installation.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of double diaphragm differential pressure gauges of the utility model embodiment.
Fig. 2 is a kind of exploded view of double diaphragm differential pressure gauges of the utility model embodiment.
Fig. 3 is a kind of scheme of installation of double diaphragm differential pressure gauges of the utility model embodiment.
Fig. 4 is the enlarged drawing of part A in the utility model Fig. 2.
Fig. 5 is the schematic diagram of the indicator of the utility model embodiment.
Specific embodiment
In the following, being further described in conjunction with substantive distinguishing features and advantage of the example to the utility model, but this is practical new
Type is not limited to listed embodiment.
As shown in Figures 1 to 5, a kind of double diaphragm differential pressure gauges of the present embodiment include shell 1, cover board 2, spiral cover 3 and instruction
Device 4, the cover board 2 are arranged on shell 1, and 1 edge of shell is equipped with external screw thread 11, and external screw thread 11 is arranged in 1 side of shell.
The cover board 2 has annular edge 21, and 21 projection of annular edge is at 2 edge of cover board.The spiral cover 3 has first step portion 31, pressing plate
32 and internal screw thread 33, the setting of first step portion 31 is resisted against on shell 1 in 3 outside of spiral cover, annular edge 21.Internal screw thread 33 and pressing plate
In 3 inside of spiral cover, pressing plate 32 is located at 33 top of internal screw thread for 32 settings, and pressing plate 32 compresses annular edge 21, internal screw thread 33 and external screw thread
11 matings.The indicator 4 has card slot 41 and instruction unit 42, and instruction unit 42 is arranged above cover board 2, card slot 41 and First
Rank portion 31 is clamped.In above-mentioned technical proposal, by the threaded connection of spiral cover 3 and shell 1, spiral cover 3 is fixed with shell
Connection, spiral cover are compressed cover board on the shell, consequently facilitating the assembly and disassembly of shell, cover board, spiral cover by pressing plate；Pass through finger
The card slot and first step portion for showing device 4 are clamped, and indicator are slided around spiral cover, so as to by the way that indicator to be moved to
It is pre- to can determine whether pointer exceeds so that observer passes through the relative position for judging indicator and pointer for preset value position
If value.In the present embodiment, the indicator has multiple, to indicate different numerical value, may be used to indicate interval range.
In the present embodiment, the cover board 2 has arc-shaped side 22, and the instruction unit is arc, and instruction unit 42 and arc-shaped side paste
It closes, to make instruction unit closer to pointer, reduces the error of observation.
In the present embodiment, the spiral cover 3 has second step portion 34, and the setting of second step portion 34 is on the outside of spiral cover 3, and first
Stage portion 41 and second step portion 34 connect, thus when the installation of bimodulus piece differential pressure gauge in the opening when, second step portion can be against
Be open two sides, can be avoided double diaphragm differential pressure gauges and falls into opening 10.
In the present embodiment, dial plate 12 is equipped in the shell 1, dial plate 12 is equipped with pointer 5, and the cover board is arranged in dial plate
Top.
In the present embodiment, there are hollow-out parts 35 in the middle part of the spiral cover 3, so that cover board 2 is enable to protrude from hollow-out parts 35,
Convenient for observation.
In the present embodiment, the cover board 2 is made of clear material, so that observer is enable to see pointer position clearly, this
Transparent material in embodiment is glass.
A kind of double diaphragm differential pressure gauges of the present embodiment are convenient for assembly and disassembly, and it is default can to slide instruction by indicator
Value, can be effectively reduced the error of observation；Meanwhile, it is capable to which double diaphragm differential pressure gauges is avoided to fall into opening during installation, facilitate installation.
It should be pointed out that above-mentioned preferred embodiment is only to illustrate the technical ideas and features of the present invention, purpose
It is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly, this reality can not be limited with this
With novel protection scope.All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover in this reality
Within novel protection scope.
Claims (6)
1. a kind of double diaphragm differential pressure gauges, which is characterized in that including shell, cover board, spiral cover and indicator, the cover board setting is outside
On shell, the shell edge is equipped with external screw thread, and external screw thread setting has annular edge in shell side, the cover board, and annular edge is convex
It is located at side edge thereof, the spiral cover has first step portion, pressing plate and internal screw thread, and first step portion is arranged on the outside of spiral cover, ring
Shape side is resisted against on shell, and internal screw thread and pressing plate are arranged on the inside of spiral cover, and pressing plate is located above internal screw thread, and pressing plate compresses annular
Side, internal screw thread and external screw thread are coupled, and the indicator has card slot and an instruction unit, instruction unit setting side on the cover board, card slot with
The clamping of first step portion.
2. double diaphragm differential pressure gauges according to claim 1, which is characterized in that the cover board has arc-shaped side, the instruction
Portion is arc, and instruction unit is bonded with arc-shaped side.
3. double diaphragm differential pressure gauges according to claim 2, which is characterized in that the spiral cover have second step portion, second
Stage portion is arranged on the outside of spiral cover, and first step portion is connected with second step portion.
4. double diaphragm differential pressure gauges according to claim 3, which is characterized in that be equipped with dial plate in the shell, set on dial plate
There is pointer, the cover board is arranged above dial plate.
5. double diaphragm differential pressure gauges according to claim 4, which is characterized in that have hollow-out parts in the middle part of the spiral cover.
6. double diaphragm differential pressure gauges according to claim 5, which is characterized in that the cover board is made of clear material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821258781.4U CN208704949U (en) | 2018-08-06 | 2018-08-06 | A kind of double diaphragm differential pressure gauges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821258781.4U CN208704949U (en) | 2018-08-06 | 2018-08-06 | A kind of double diaphragm differential pressure gauges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208704949U true CN208704949U (en) | 2019-04-05 |
Family
ID=65941635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821258781.4U Active CN208704949U (en) | 2018-08-06 | 2018-08-06 | A kind of double diaphragm differential pressure gauges |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208704949U (en) |
-
2018
- 2018-08-06 CN CN201821258781.4U patent/CN208704949U/en active Active
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