CN201908828U - Unloading valve - Google Patents
Unloading valve Download PDFInfo
- Publication number
- CN201908828U CN201908828U CN2010206667995U CN201020666799U CN201908828U CN 201908828 U CN201908828 U CN 201908828U CN 2010206667995 U CN2010206667995 U CN 2010206667995U CN 201020666799 U CN201020666799 U CN 201020666799U CN 201908828 U CN201908828 U CN 201908828U
- Authority
- CN
- China
- Prior art keywords
- valve
- water channel
- pump head
- unloading
- pressure
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses an unloading valve, which comprises a pump head, the pump head is firmly connected with a valve body, a valve rod is arranged in the valve body, and is connected with the valve body in a sliding fit manner, one end of the valve rod is screwed in a spool, the other end of the valve rod is provided with a pressure-regulating spring holder, which is connected with a screw through a pressure-regulating spring and an anti-loosening spring, the valve body is screwed in an outer-hexagonal valve cap, which is hexagonally connected with an inner-hexagonal pressure-regulating handle, the pressure-regulating handle is screwed in a nut, and the screw is screwed in the valve cap, the nut and the pressure-regulating handle. The unloading valve can more conveniently regulate pressure, and is safer when in use, the position of the conical sealing line is fixed, the sealing property is high, and the service life is longer.
Description
Technical field
The utility model relates to a kind of pressure regulation relief arrangement that is used for high-pressure water pump.
Background technique
Along with the attention of people to environment and object housekeeping, the application of pressured fluid implement is more and more general.Wherein relatively typical application is a jetting machine, and jetting machine mainly is made of spray gun and high-pressure water pump two-part.Unloading valve plays adjustment pressure as the important component part of high-pressure water pump, guarantees the effect of safety and minimizing power consumption.As Fig. 1, traditional unloading valve is connected with pressure adjusting spring 104 by double nut 103, realizes the effect of pressure limiting pressure regulation, but since the use of double nut need instrument such as spanner assist adjustment pressure inconvenience.And, the tradition unloading valve often adopts the steel ball face seal, reach the purpose of sealing by being connected between steel ball seat 101 and the steel ball 102, thereby but since steel ball can't fix and have the unfixed problem of potted line, in addition, the steel ball sphere weares and teares easily, steel ball 102 after the wearing and tearing and the poor sealing performance between the steel ball seat 101, need often to change, working life is short.
Summary of the invention
In view of the defective that above-mentioned prior art exists, the purpose of this utility model is to propose a kind of novel unloading valve, can regulate pressure and good sealing effect easily.
The purpose of this utility model will be achieved by the following technical programs:
A kind of unloading valve comprises the pump head and the valve body that are mutually permanently connected, but is provided with to slide relative a valve rod in the described valve body; One end of described valve rod is fixedly connected with a spool that interior valve seat connects with being arranged on pump head, and the other end is provided with the pressure adjusting spring seat;
One end of one pressure adjusting spring is connected to described pressure adjusting spring seat, and the other end is connected to a screw rod;
Described valve body places the outer end of pump head to be provided with outside thread, and an end of a valve gap is provided with the internal thread that cooperates with it;
The other end of described valve gap is the outer-hexagonal structure, is connected with adjusting pressuring handle six sides with interior hexagonal structure;
The threaded one end of described adjusting pressuring handle and screw rod is connected and fixed, and the other end of described screw rod is threaded fixing with described valve gap, and fastening by a nut.
Further, above-mentioned unloading valve, wherein: described valve seat is the conical valve base of the conical surface for its sealing surface, described pump head is fixedlyed connected with conical valve base, the sealing surface of described spool is the conical surface, and described conical valve base and spool are connected, and described conical valve base is communicated with the low pressure water channel.
Further, above-mentioned unloading valve, wherein: also be provided with a locking spring between described valve gap and the valve body, described locking spring housing is located at the outside of pressure adjusting spring.
Further, above-mentioned unloading valve, comprise the high pressure water channel, wherein: be provided with the high pressure water channel and the water inlet that are interconnected in the described pump head, be provided with one in the described high pressure water channel and can be arranged with the seal ring that is used for the sealed high pressure water channel on the described check valve core with respect to the reciprocating check valve core of described high pressure water channel.
Further, above-mentioned unloading valve, wherein: be arranged with the O RunddichtringO that is used for sealed valve stem and valve body on the described valve rod.
Further, above-mentioned unloading valve, wherein: described valve gap is provided with the screw with locking Drop-proof effect.
Outstanding effect of the present utility model is:
(1) the utility model adopts pressure limiting structure and adjusting pressuring handle structure, and pressure is adjusted more convenient, and safety in utilization is better;
(2) the utility model conical surface seal line position is fixed, good seal performance, longer service life.
Following constipation closes embodiment's accompanying drawing, embodiment of the present utility model is described in further detail, so that technical solutions of the utility model are easier to understand, grasp.
Description of drawings
Fig. 1 is the sectional view of prior art unloading valve;
Fig. 2 is the sectional view of the utility model unloading valve.
Embodiment
A kind of unloading valve of the present utility model comprises the pump head 11 and valve body 4 that are mutually permanently connected, but is provided with to slide relative a valve rod 3 in the described valve body 4; One end of described valve rod 3 is fixedly connected with a spool 2 that connects with the valve seat that is arranged in the pump head 11, and the other end is provided with pressure adjusting spring seat 18; One end of one pressure adjusting spring 6 is connected to described pressure adjusting spring seat 18, and the other end is connected to a screw rod 8; Described valve body 4 places pump head 11 outer ends to be provided with outside thread, and an end of a valve gap 12 is provided with the internal thread that cooperates with it; The other end of described valve gap 12 is the outer-hexagonal structure, is connected with adjusting pressuring handle 10 6 sides with interior hexagonal structure; Described adjusting pressuring handle 10 is connected and fixed with the threaded one end of screw rod 8, the other end of described screw rod 8 is threaded fixing with described valve gap 12, and it is fastening by a nut 9, be provided with step in the described adjusting pressuring handle, can prop up nut 9, thereby by being connected between screw rod 8 fastening adjusting pressuring handles 10 and the valve gap 12.Described valve seat is the conical valve base 1 of the conical surface for its sealing surface, and described pump head 11 is fixedlyed connected with conical valve base 1, and the sealing surface of described spool 2 is the conical surface, and the angle of the conical surface is 0～180 degree.Described conical valve base 1 is connected with spool 2, is conical surface location between them, to guarantee stablizing of potted line in the course of the work.Described conical valve base 1 is communicated with low pressure water channel 22.Also be provided with a locking spring 7 between described valve gap 12 and the valve body 4, described locking spring 7 is set in the outside of pressure adjusting spring 6.The utility model also comprises high pressure water channel 21, be provided with the high pressure water channel 21 and the water inlet 16 that are interconnected in the described pump head 11, be provided with one in the described high pressure water channel 21 and can be arranged with the seal ring 20 that is used for sealed high pressure water channel 21 on the described check valve core 19 with respect to described high pressure water channel 21 reciprocating check valve cores 19.Be arranged with the O RunddichtringO 14,15 that is used for sealed valve stem 3 and valve body 4 on the described valve rod 3, also be arranged with the back-up ring 13,17 that is used to prevent the seal ring slippage on the valve rod 3.Described valve gap 12 is provided with the screw 5 with locking Drop-proof effect, and described valve body 4 is provided with the orbital groove of screw 5 operations, can play the disengaging that prevents between valve body 4 and the valve gap 12.
The utility model has adopted pressure limiting structure, by fastening screw nut 9 behind screw rod 8 set pressures, limits the normal maximum pressure that uses, the employing fine thread that is threaded of pressure adjusting structure screw rod 8 and valve gap 12 wherein, more convenient pressure adjustment.Assembling adjusting pressuring handle 10 adopts six side's Placements between the two on valve gap 12, guarantees that pressure can only reduce and can not increase in the using process, guarantees safety in utilization.Only need tune during use and press handle 10, valve gap 12 also thereupon the screw thread on the valve body 4 unscrew or screw, the cavity size between valve body 4 and the valve gap 12 changes, and influences the length of pressure adjusting spring 6, thereby reaches the effect of set pressure.12 locking springs 7 of assembling of valve body 4 and valve gap can play locking effect.After using the utility model set pressure, when the pressure of water reaches the pressure unloading of setting, press water makes valve rod 3 drive valve core heads 2 by water inlet 16 and moves upward, and high pressure water enters low-pressure water through conical valve base 1, thereby reaches the purpose of off-load.The sealing surface of spool 2 is the conical surface, the good airproof performance of conical surface seal face, and potted line is fixed, long service life.
The utility model still has numerous embodiments, and all employing equivalents or equivalent transformation and all technological schemes of forming all drop within the protection domain of the present utility model.
Claims (6)
1. a unloading valve comprises the pump head and the valve body that are mutually permanently connected, it is characterized in that:
But be provided with to slide relative a valve rod in the described valve body; One end of described valve rod is fixedly connected with a spool that interior valve seat connects with being arranged on pump head, and the other end is provided with the pressure adjusting spring seat;
One end of one pressure adjusting spring is connected to described pressure adjusting spring seat, and the other end is connected to a screw rod;
Described valve body places the outer end of pump head to be provided with outside thread, and an end of a valve gap is provided with the internal thread that cooperates with it;
The other end of described valve gap is the outer-hexagonal structure, is connected with adjusting pressuring handle six sides with interior hexagonal structure;
The threaded one end of described adjusting pressuring handle and screw rod is connected and fixed, and the other end of described screw rod is threaded fixing with described valve gap, and fastening by a nut.
2. a kind of unloading valve according to claim 1, it is characterized in that: described valve seat is the conical valve base of the conical surface for its sealing surface, and described pump head is fixedlyed connected with conical valve base, and the sealing surface of described spool is the conical surface, described conical valve base and spool are connected, and described conical valve base is communicated with the low pressure water channel.
3. a kind of unloading valve according to claim 1 is characterized in that: also be provided with a locking spring between described valve gap and the valve body, described locking spring housing is located at the outside of pressure adjusting spring.
4. a kind of unloading valve according to claim 1, comprise the high pressure water channel, it is characterized in that: be provided with the high pressure water channel and the water inlet that are interconnected in the described pump head, be provided with one in the described high pressure water channel and can be arranged with the seal ring that is used for the sealed high pressure water channel on the described check valve core with respect to the reciprocating check valve core of described high pressure water channel.
5. a kind of unloading valve according to claim 1 is characterized in that: be arranged with the O RunddichtringO that is used for sealed valve stem and valve body on the described valve rod.
6. a kind of unloading valve according to claim 1 is characterized in that: described valve gap is provided with the screw with locking Drop-proof effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206667995U CN201908828U (en) | 2010-12-17 | 2010-12-17 | Unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206667995U CN201908828U (en) | 2010-12-17 | 2010-12-17 | Unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201908828U true CN201908828U (en) | 2011-07-27 |
Family
ID=44301031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206667995U Expired - Lifetime CN201908828U (en) | 2010-12-17 | 2010-12-17 | Unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201908828U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519089A (en) * | 2011-12-04 | 2012-06-27 | Tcl空调器(中山)有限公司 | Air conditioner with unloading function |
| CN102825053A (en) * | 2012-09-11 | 2012-12-19 | 绿田机械股份有限公司 | No-load starting high-pressure pipeline pressure relief mechanism of high-pressure cleaning machine |
| CN103047455A (en) * | 2012-12-17 | 2013-04-17 | 苏州洁宝机械有限公司 | Special pressure regulating unloading valve for high-pressure cleaner |
| CN110985729A (en) * | 2020-01-08 | 2020-04-10 | 兰州理工大学 | Ultrahigh pressure overflow valve |
-
2010
- 2010-12-17 CN CN2010206667995U patent/CN201908828U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519089A (en) * | 2011-12-04 | 2012-06-27 | Tcl空调器(中山)有限公司 | Air conditioner with unloading function |
| CN102825053A (en) * | 2012-09-11 | 2012-12-19 | 绿田机械股份有限公司 | No-load starting high-pressure pipeline pressure relief mechanism of high-pressure cleaning machine |
| CN102825053B (en) * | 2012-09-11 | 2017-02-22 | 绿田机械股份有限公司 | No-load starting high-pressure pipeline pressure relief mechanism of high-pressure cleaning machine |
| CN103047455A (en) * | 2012-12-17 | 2013-04-17 | 苏州洁宝机械有限公司 | Special pressure regulating unloading valve for high-pressure cleaner |
| CN110985729A (en) * | 2020-01-08 | 2020-04-10 | 兰州理工大学 | Ultrahigh pressure overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |