CN213451761U - Overflow valve of high-pressure cleaning machine - Google Patents
Overflow valve of high-pressure cleaning machine Download PDFInfo
- Publication number
- CN213451761U CN213451761U CN202021428977.0U CN202021428977U CN213451761U CN 213451761 U CN213451761 U CN 213451761U CN 202021428977 U CN202021428977 U CN 202021428977U CN 213451761 U CN213451761 U CN 213451761U
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- Prior art keywords
- valve
- high pressure
- pump body
- pressure
- case
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- 238000004140 cleaning Methods 0.000 title claims description 8
- 238000007789 sealing Methods 0.000 abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Control Of Fluid Pressure (AREA)
- Safety Valves (AREA)
Abstract
The utility model discloses a high pressure cleaner's overflow valve, including installing valve barrel and the valve body in the pump body, be equipped with the case in the valve barrel, still be equipped with the spring between valve body and the case, still install high pressure seal circle in the pump body, high pressure seal circle is located the inboard of the water inlet of valve body, the medial surface of high pressure seal circle and the tip sealing contact of case make and form seal structure between the pump body, case and the valve barrel. In this way, the utility model discloses high pressure cleaner's overflow valve can simplify the structure, improves the sealed effect of case, and the structure is firm, simple to operate, long service life, reduction in production cost.
Description
Technical Field
The utility model relates to a cleaning machine field especially relates to a high pressure cleaner's overflow valve.
Background
When the high-pressure cleaning machine works, the maximum pressure of the water outlet is controlled by the overflow valve, and the starting and stopping of the motor at the moment of gun opening and gun closing are realized by the linkage action of the overflow valve and the microswitch. The existing technology of the existing overflow valve adopts conical surface hard contact sealing between a valve core and a valve sleeve. When the cleaning machine works, because the valve core and the valve sleeve of the overflow valve bear very high pressure, after long-time use, the matching surface between the valve core and the valve sleeve is seriously worn, the stress area of the valve core is increased, and the water pressure acting on the conical surface of the valve core is larger than the spring force of the valve core, so that the pump jump phenomenon of the machine is caused. In addition, due to abrasion between the valve core and the valve sleeve, when the gun is closed, water pressure leaks, the gun closing pressure cannot be continued, the working pressure is reduced too fast, and the pressure cannot reach the critical value of the bouncing overflow valve and the microswitch, so that the motor cannot be shut down and the burn-out phenomenon occurs.
In addition, because the valve core and the valve sleeve of the overflow valve are sealed by adopting the conical surface hard contact, the two parts are required to have very high coaxiality, and the machining precision and the reliability of the production process have great influence on the production cost of enterprises.
Disclosure of Invention
The utility model discloses the main technical problem who solves provides a high pressure cleaner's overflow valve, can simplify the structure, improves the sealed effect of case, and the structure is firm, simple to operate, long service life, reduction in production cost.
In order to solve the technical problem, the utility model discloses a technical scheme be: the overflow valve of the high-pressure cleaning machine comprises a valve sleeve and a valve body which are installed in a pump body, wherein a valve core is arranged in the valve sleeve, a spring is further arranged between the valve body and the valve core, a high-pressure sealing ring is further installed in the pump body and is located on the inner side of a water inlet of the valve body, and the inner side surface of the high-pressure sealing ring is in sealing contact with the end portion of the valve core, so that a sealing structure is formed among the pump body, the valve core and the valve sleeve.
In a preferred embodiment of the present invention, the front end of the valve core has an axially extending protrusion structure, and the protrusion structure is in contact with the inner side surface of the high-pressure seal ring.
In a preferred embodiment of the present invention, the protrusion structure is a cylindrical protrusion.
In a preferred embodiment of the present invention, the high-pressure seal ring is installed in a groove of the pump body, a gasket for fastening the high-pressure seal ring is further provided in the groove, and a left side surface of the gasket is attached to a right end surface of the valve housing.
In a preferred embodiment of the present invention, a low pressure sealing ring is further disposed between the outer side of the valve housing and the inner side of the valve body.
In a preferred embodiment of the present invention, the end of the valve element contacts a micro switch in the pump body.
The utility model has the advantages that: the utility model discloses high pressure cleaner's overflow valve can simplify the structure, improves the sealed effect of case, and the structure is firm, simple to operate, long service life, reduction in production cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a schematic structural view of a preferred embodiment of an overflow valve of the high pressure cleaner of the present invention;
FIG. 2 is a schematic view of a gun shut-off state;
the parts in the drawings are numbered as follows: 1. the pump body, 2, valve barrel, 3, valve body, 4, case, 5, spring, 6, high pressure seal circle, 7, protruding structure, 8, packing ring, 9, low pressure seal circle, 10, micro-gap switch, 11, water inlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 and 2, an overflow valve of a high pressure cleaning machine includes a valve housing 2 and a valve body 3 installed in a pump body 1, a valve core 4 is installed in the valve housing 2, a spring 5 is further installed between the valve body 3 and the valve core 4, a high pressure sealing ring 6 is further installed in the pump body 1, the high pressure sealing ring 6 is located inside a water inlet 11 of the valve body 1, and an inner side surface of the high pressure sealing ring 6 is in sealing contact with an end portion of the valve core 4, so that a sealing structure is formed among the pump body 1, the valve core 4 and the valve housing 2.
In addition, the front end of the valve core 4 is provided with an axially extending bulge structure 7, and the bulge structure 7 is contacted with the inner side surface of the high-pressure sealing ring 6.
In addition, the projection structure 7 is a cylindrical projection.
In addition, the high-pressure sealing ring 6 is arranged in a groove of the pump body 1, a gasket 8 used for fastening the high-pressure sealing ring 6 is further arranged in the groove, the left side face of the gasket 8 is attached to the right end face of the valve sleeve 2, the gasket 8 ensures that the high-pressure sealing ring 6 is stable in structure in the valve body, so that the position of the high-pressure sealing ring 6 cannot be changed when the high-pressure sealing ring works, the high-pressure sealing ring can be in flexible contact with the valve core 4 and the pump body 1, abrasion of the valve core 4 is reduced, working stability is guaranteed, the phenomenon of pump jumping does not occur, leakage does not occur when pressure rises instantly when the gun is closed, and. The high-pressure sealing ring 6 is directly arranged on the pump body 1, only the pump body 1 needs to be processed, the sealing structure is simplified, various complex processing of the overflow valve is not needed, and the production cost is reduced.
In addition, a low-pressure sealing ring 9 is arranged between the outer side of the valve sleeve 2 and the inner side of the valve body 3.
In addition, the end of the valve core 4 contacts with a micro switch 10 in the pump body 1.
The utility model discloses high pressure cleaner's the concrete theory of operation of overflow valve as follows: when the gun is started, water enters the pump body, and at the moment, the cylindrical bulge of the valve core 4 and the high-pressure sealing ring 6 form a sealing structure, so that pressure is prevented from leaking. When the gun is shut down, the water pressure rises instantly, so that the pressure acting on the end part of the valve core 4 is larger than the spring force on the valve core 4, the valve core 4 is pushed away, and the tail end of the valve core 4 pushes the micro switch 10, thereby realizing the shutdown. When the gun is opened again, the valve core 4 rebounds due to the reduction of the outlet pressure, and is tightly structured with the high-pressure sealing ring 6 again, so that the sealing effect is ensured.
Be different from prior art, the utility model discloses high pressure cleaner's overflow valve can simplify the structure, improves the sealed effect of case, and the structure is firm, simple to operate, long service life.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (5)
1. The overflow valve of the high-pressure cleaning machine comprises a valve sleeve and a valve body which are installed in a pump body, wherein a valve core is arranged in the valve sleeve, and a spring is further arranged between the valve body and the valve core.
2. The excess flow valve for a high pressure washer according to claim 1, wherein the front end of the valve core has an axially extending raised structure, and the raised structure contacts with the inner side surface of the high pressure seal ring.
3. The excess flow valve for a high pressure cleaner of claim 2 wherein the raised structure is a cylindrical protrusion.
4. The overflow valve for a high pressure cleaner as claimed in claim 1, wherein a low pressure seal is further provided between the outside of the valve housing and the inside of the valve body.
5. The excess flow valve for a high pressure washer according to claim 4, wherein a tip end of the spool contacts a micro switch in the pump body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021428977.0U CN213451761U (en) | 2020-07-20 | 2020-07-20 | Overflow valve of high-pressure cleaning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021428977.0U CN213451761U (en) | 2020-07-20 | 2020-07-20 | Overflow valve of high-pressure cleaning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213451761U true CN213451761U (en) | 2021-06-15 |
Family
ID=76306703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021428977.0U Active CN213451761U (en) | 2020-07-20 | 2020-07-20 | Overflow valve of high-pressure cleaning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213451761U (en) |
-
2020
- 2020-07-20 CN CN202021428977.0U patent/CN213451761U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214000 No.10 Keji Avenue, Gaocheng Town, Yixing City, Wuxi City, Jiangsu Province Patentee after: Jiangsu xintongheng Tools Co.,Ltd. Address before: 214200 No.10 Keji Avenue, Gaocheng Town, Yixing City, Wuxi City, Jiangsu Province Patentee before: YIXING XINTONGHENG ELECTRIC TOOL Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213000, 1st Floor, Building 2, No. 8 Longhui Road, Wujin National High tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: Jiangsu Saiyiou Tools Co.,Ltd. Country or region after: China Address before: 214000 No.10 Keji Avenue, Gaocheng Town, Yixing City, Wuxi City, Jiangsu Province Patentee before: Jiangsu xintongheng Tools Co.,Ltd. Country or region before: China |