CN110894890A - Use reliable restriction valve gap - Google Patents
Use reliable restriction valve gap Download PDFInfo
- Publication number
- CN110894890A CN110894890A CN201811058960.8A CN201811058960A CN110894890A CN 110894890 A CN110894890 A CN 110894890A CN 201811058960 A CN201811058960 A CN 201811058960A CN 110894890 A CN110894890 A CN 110894890A
- Authority
- CN
- China
- Prior art keywords
- hole
- balance spring
- adjusting bolt
- limiting valve
- valve cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
Abstract
The invention belongs to the technical field of pneumatic parts, and relates to a piston type pressure limiting valve part, wherein the initial state of a limiting valve cover which is reliable to use is a cylindrical structure, a hole is formed in the middle of the valve cover, a locking nut is arranged on the hole, an adjusting bolt is arranged in the hole, an adjusting seat is arranged at the lower end of the adjusting bolt and used for controlling a balance spring, a balance piston is arranged below the balance spring, and the adjusting bolt can be screwed to control the elasticity of the balance spring when the performance of the balance spring is weakened or the pressure of the limiting valve needs to be adjusted, so that the optimal working state of the limiting valve is achieved, the operation is convenient, the structure is simple, the performance is stable.
Description
Technical Field
The invention belongs to the technical field of pneumatic parts, and relates to a general measure for generating and maintaining the effective operation of machines or equipment, in particular to a piston type pressure limiting valve part.
Background
Various machines and automobiles using air as power basically adopt a pressure limiting valve for controlling the pressure. The common pressure limiting valve generally adopts a diaphragm type structure, and the working principle is that pressure is transmitted to a diaphragm, the diaphragm control core rod then drives the valve, the size of air pressure is controlled through multi-stage transmission, the structure is complex, the damage to the diaphragm is great, and the quality stability is not high. The piston type pressure limiting valve has the advantages of being stable in performance, reliable in quality, long in service life and the like.
Disclosure of Invention
The invention solves the technical problems that the prior art has no practical and effective measure for limiting the working stroke of a balance spring, so that the stroke of a balance piston is too short due to the too short stroke of the balance spring, and finally the problems of insufficient air pressure, low working efficiency and the like are caused, and the valve cover is reliable to use.
The technical scheme includes that the limiting valve cover reliable in use is of a cylindrical structure, a hole is formed in the valve cover, a locking nut is arranged on the hole, an adjusting bolt is arranged in the hole, the lower end of the adjusting bolt penetrates through the valve cover and the locking nut and then contacts with an adjusting seat to control a balance spring, the balance spring is arranged between the adjusting seat and a balance piston, and when the performance of the balance spring is weakened or the pressure of the limiting valve needs to be adjusted, the adjusting bolt can be screwed, so that the optimal working state of the limiting valve is achieved.
And a concave surface is arranged at the contact part of the adjusting seat and the adjusting bolt.
The invention provides a reliable limiting valve cover, which is in a cylindrical structure in an initial state, a hole is formed in the middle of the valve cover, a locking nut is arranged on the hole, an adjusting bolt is arranged in the hole, the lower end of the adjusting bolt penetrates through the valve cover and the locking nut and then contacts with an adjusting seat to control a balance spring, the balance spring is arranged between the adjusting seat and a balance piston, and when the performance of the balance spring is weakened or the pressure of the limiting valve needs to be adjusted, the adjusting bolt can be screwed to control the elasticity of the balance spring, so that the optimal working state of the limiting valve is achieved, the operation is convenient, the structure is simple, the performance is stable, the quality is reliable, and the service life is long.
Drawings
Fig. 1 is a cross-sectional view of the present invention in a normal state.
1 adjusting bolt, 2 lock nuts, 3 valve covers, 4 adjusting seats, 5 balance springs and 6 balance pistons.
Detailed Description
The present invention is described in further detail with reference to the following examples, but the scope of the present invention is not limited thereto.
As shown in figure 1, the invention relates to a reliable limiting valve cover which is of a cylindrical structure, a hole is formed in the middle of a valve cover 3, a locking nut 2 is arranged on the hole, an adjusting bolt 1 is arranged in the hole, the lower end of the adjusting bolt penetrates through the valve cover and the locking nut and then contacts with an adjusting seat 4 to control a balance spring 5, the balance spring 5 is arranged between the adjusting seat and a balance piston 6, and the balance piston 6 is driven by the balance spring 5 to normally work. When the pressure in the limiting valve needs to be adjusted or the elasticity of the balance spring 5 is weakened, the adjusting bolt 1 can be screwed to control the elasticity of the balance spring 5, so that the optimal working state is achieved.
The invention has the advantages of simple structure, convenient operation, stable performance, reliable quality, long service life and the like.
Claims (2)
1. A limit valve cover with reliable use, which is characterized in that: the limiting valve cover reliable to use is of a cylindrical structure, the valve cover is provided with a hole, a locking nut is arranged on the hole, an adjusting bolt is arranged in the hole, the lower end of the adjusting bolt penetrates through the valve cover and the locking nut and then contacts with an adjusting seat, and a balance spring is arranged between the adjusting seat and a balance piston.
2. A limit valve cover for reliable use as defined in claim 1, wherein: the contact part of the adjusting seat and the adjusting bolt is provided with a concave surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811058960.8A CN110894890A (en) | 2018-09-12 | 2018-09-12 | Use reliable restriction valve gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811058960.8A CN110894890A (en) | 2018-09-12 | 2018-09-12 | Use reliable restriction valve gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110894890A true CN110894890A (en) | 2020-03-20 |
Family
ID=69784991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811058960.8A Withdrawn CN110894890A (en) | 2018-09-12 | 2018-09-12 | Use reliable restriction valve gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110894890A (en) |
-
2018
- 2018-09-12 CN CN201811058960.8A patent/CN110894890A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200320 |
|
| WW01 | Invention patent application withdrawn after publication |