CN212839585U - Pressure limiting and regulating valve - Google Patents
Pressure limiting and regulating valve Download PDFInfo
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- CN212839585U CN212839585U CN202021104364.1U CN202021104364U CN212839585U CN 212839585 U CN212839585 U CN 212839585U CN 202021104364 U CN202021104364 U CN 202021104364U CN 212839585 U CN212839585 U CN 212839585U
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- pressure limiting
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Abstract
The utility model discloses a pressure limiting and pressure regulating valve, which is additionally provided with a pressure limiting screw plug; when the cleaning machine is adjusted to the rated pressure, the pressure limiting screw plug is screwed in, so that the pressure limiting screw plug is attached to the valve rod; after the assembly, the handle cannot be downward, so that the compression amount of the spring cannot be further increased, and the aim of accurately limiting the highest pressure of the machine tool is fulfilled; at the moment, the handle can be rotated upwards until the pressure of the machine is adjusted to 0MPa, so that adverse effects on the reliability and the service life of the machine cannot be caused, a limit screw is added, and when the handle is rotated upwards, the pressure of the machine is adjusted to 0MPa, the limit screw is screwed in, so that the limit screw is attached to the pressure limiting plug screw; after the assembly, the handle can not be continuously upwards, the handle and the valve rod can not be separated, so that a user can not add a gasket between the handle and the spring, the purpose of changing the set highest pressure of the pressure regulating valve can not be achieved, and premature failure of the machine tool can not be caused.
Description
Technical Field
The utility model belongs to the technical field of the pressure limiting air-vent valve is relevant, concretely relates to pressure limiting air-vent valve.
Background
In order to meet the requirements of users for different pressures when using the cleaning machine, cleaning machine manufacturers can install a pressure regulating valve (fig. 2) capable of adjusting the pressure on the machine tool; the compression amount of the spring is changed by rotating the handle, so that the acting force of the spring on the valve rod is changed, and the purpose of adjusting the pressure is achieved; the pressure adjusting range is 0MPa to rated pressure; the rated pressure is the highest pressure at which the tool reaches the service life promised by the manufacturer; meanwhile, the existing pressure regulating valve is very easy to disassemble, and a user with certain experience can change the pressure regulating valve, for example, a gasket is added in the figure 3, so that the maximum pressure limited by the pressure regulating valve is increased to a greater extent, and the machine tool fails prematurely.
The prior pressure limiting and regulating valve technology has the following problems: when the existing pressure limiting and regulating valve is used, accurate pressure limitation cannot be carried out due to the overlapping of a plurality of dimensional tolerances and the length tolerance of the spring. The defined maximum pressure tends to be greater than the rated pressure, which can adversely affect the reliability and useful life of the implement; and because the pressure regulating valve is very easy to disassemble, a user with certain experience can change the pressure regulating valve, a gasket is added, the maximum pressure limited by the pressure regulating valve is increased to a greater extent, and the machine tool fails prematurely.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pressure limiting air-vent valve to the reliability and the life of the machine tool that provide in solving above-mentioned background art produce adverse effect and caused the too early inefficacy problem of machine tool.
In order to achieve the above object, the utility model provides a following technical scheme: the pressure limiting and regulating valve comprises a valve rod and a pressure limiting plug screw, wherein a spring is sleeved at the position of the outer wall in the middle of the valve rod, a handle is sleeved at the position of the outer wall of the valve rod, a limiting screw is sleeved at the position of the inner position above the valve rod, the limiting screw is positioned at the position of the inner position above the handle, and the pressure limiting plug screw is arranged at the position of the inner wall above the valve rod and the position of the outer wall below the limiting screw.
Preferably, a T-shaped fixing insertion hole is formed in the position of the inner portion above the valve rod, and anti-oxidation paint layer structures are arranged on the positions of the inner wall and the outer wall of the valve rod.
Preferably, the diameter of the spring is set to be five millimeters, an anti-oxidation paint layer structure is arranged at the position of the outer wall of the spring, and the spring is fixedly connected with the handle.
Preferably, the handle is divided into an upper part and a lower part, the thickness of the handle is set to be one centimeter, and the positions of the inner wall and the outer wall of the handle are provided with anti-oxidation paint layer structures.
Preferably, the limiting screw is of a T-shaped cylindrical structure, and an anti-oxidation paint layer structure is arranged on the outer wall of the limiting screw.
Preferably, the thickness of the pressure limiting screw plug is set to be two millimeters, and the pressure limiting screw plug is fixedly connected with the valve rod.
Compared with the prior art, the utility model provides a pressure limiting air-vent valve possesses following beneficial effect:
1. the utility model adds a pressure limiting screw plug; when the cleaning machine is adjusted to the rated pressure, the pressure limiting screw plug is screwed in, so that the pressure limiting screw plug is attached to the valve rod; after the assembly, the handle cannot be downward, so that the compression amount of the spring cannot be further increased, and the aim of accurately limiting the highest pressure of the machine tool is fulfilled; at the moment, the handle can be rotated upwards until the pressure of the machine is adjusted to 0MPa, so that the reliability and the service life of the machine are not adversely affected.
2. The utility model adds the limit screw, the handle rotates upwards, when the pressure of the machine is adjusted to 0MPa, the limit screw is screwed in, so that the limit screw is attached to the pressure limiting plug screw; after the assembly, the handle can not be continuously upwards, the handle and the valve rod can not be separated, so that a user can not add a gasket between the handle and the spring, the purpose of changing the set highest pressure of the pressure regulating valve can not be achieved, and premature failure of the machine tool can not be caused.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:
fig. 1 is a schematic view of an innovative structure of a pressure limiting and regulating valve of the present invention;
FIG. 2 is a schematic diagram of the original structure of the pressure limiting and regulating valve of the present invention;
FIG. 3 is a schematic diagram of a slightly improved structure of the pressure limiting and regulating valve of the present invention;
in the figure: 1. a handle; 2. a spring; 3. a valve stem; 4. a pressure limiting screw plug; 5. and a limiting screw.
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 embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a pressure-limiting and pressure-regulating valve, which comprises: a pressure limiting and regulating valve comprises a valve rod 3 and a pressure limiting screw plug 4, wherein a T-shaped fixed jack is arranged at an inner position above the valve rod 3, an anti-oxidation paint layer structure is arranged at the inner wall position and the outer wall position of the valve rod 3, the fixed connection work and the fixed sleeving work can be better carried out through the valve rod 3, a spring 2 is sleeved at the position of the outer wall in the middle of the valve rod 3, the diameter of the spring 2 is set to be five millimeters, the anti-oxidation paint layer structure is arranged at the position of the outer wall of the spring 2, the spring 2 is fixedly connected with a handle 1, the pressurizing work can be better carried out through the spring 2, the handle 1 is sleeved at the position of the outer wall of the valve rod 3, the handle 1 is divided into an upper part and a lower part, the thickness of the handle 1 is set to be one centimeter, the anti-oxidation paint layer structures are arranged at the positions of the, a limiting screw 5 is sleeved at an inner position above the valve rod 3, the limiting screw 5 is positioned at an inner position above the handle 1, the shape structure of the limiting screw 5 is a T-shaped cylindrical structure, an anti-oxidation paint layer structure is arranged at the outer wall position of the limiting screw 5, and the limiting screw 5 is attached to the pressure limiting screw plug 4 through the limiting screw 5; after the assembly, the handle 1 can not continue upwards, the handle 1 and the valve rod 3 can not be separated, so that a user can not add a gasket between the handle 1 and the spring 2, the purpose that the set highest pressure of the pressure regulating valve can not be changed is realized, the position of the inner wall above the valve rod 3 and the position of the outer wall below the limiting screw 5 are both provided with the pressure limiting screw plugs 4, the thickness of the pressure limiting screw plugs 4 is set to be two millimeters, the pressure limiting screw plugs 4 are fixedly connected with the valve rod 3, and the handle 1 can not continue downwards through the pressure limiting screw plugs 4, so that the compression amount of the spring 2 can not be further increased, and the purpose of accurately limiting the highest pressure of the machine tool is achieved.
The utility model discloses a theory of operation and use flow: after the utility model is installed, when the cleaning machine is adjusted to the rated pressure, the pressure limiting screw plug 4 is screwed in, so that the pressure limiting screw plug 4 is attached to the valve rod 3; after the assembly, the handle 1 cannot continue to move downwards, so that the compression amount of the spring 2 cannot be further increased, and the aim of accurately limiting the highest pressure of the machine tool is fulfilled; at the moment, the handle 1 can be rotated upwards until the pressure of the machine is adjusted to 0MPa, and then the limit screw 5 is screwed in, so that the limit screw 5 is attached to the pressure limiting plug screw 4; after the assembly, the handle 1 cannot be continuously upwards, and the handle 1 and the valve rod 3 cannot be separated, so that a user cannot add a gasket between the handle 1 and the spring 2, and the purpose that the set highest pressure of the pressure regulating valve cannot be changed is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The pressure-limiting and pressure-regulating valve comprises a valve rod (3) and a pressure-limiting screw plug (4), and is characterized in that: spring (2) has been cup jointed to valve rod (3) middle outer wall position department, handle (1) has been cup jointed to valve rod (3) outer wall position department, stop screw (5) have been cup jointed to valve rod (3) top internal position department, stop screw (5) are located handle (1) top internal position department, valve rod (3) top inner wall position department and stop screw (5) below outer wall position department all are provided with voltage limiting plug screw (4).
2. A pressure limiting and regulating valve according to claim 1 wherein: and a T-shaped fixed jack is arranged at the inner position above the valve rod (3).
3. A pressure limiting and regulating valve according to claim 1 wherein: the diameter of the spring (2) is set to be five millimeters, and the spring (2) is fixedly connected with the handle (1).
4. A pressure limiting and regulating valve according to claim 1 wherein: the handle (1) is divided into an upper part and a lower part, and the thickness of the handle (1) is set to be one centimeter.
5. A pressure limiting and regulating valve according to claim 1 wherein: the limiting screw (5) is of a T-shaped cylindrical structure.
6. A pressure limiting and regulating valve according to claim 1 wherein: the thickness of the pressure limiting screw plug (4) is set to be two millimeters, and the pressure limiting screw plug (4) is fixedly connected with the valve rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021104364.1U CN212839585U (en) | 2020-06-16 | 2020-06-16 | Pressure limiting and regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021104364.1U CN212839585U (en) | 2020-06-16 | 2020-06-16 | Pressure limiting and regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212839585U true CN212839585U (en) | 2021-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021104364.1U Active CN212839585U (en) | 2020-06-16 | 2020-06-16 | Pressure limiting and regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212839585U (en) |
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2020
- 2020-06-16 CN CN202021104364.1U patent/CN212839585U/en active Active
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