CN209245383U - Pilot valve balanced structure - Google Patents
Pilot valve balanced structure Download PDFInfo
- Publication number
- CN209245383U CN209245383U CN201822110701.7U CN201822110701U CN209245383U CN 209245383 U CN209245383 U CN 209245383U CN 201822110701 U CN201822110701 U CN 201822110701U CN 209245383 U CN209245383 U CN 209245383U
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- Prior art keywords
- main valve
- channel
- valve
- valve plug
- pilot valve
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Abstract
The utility model relates to valve technology fields, more particularly, to a kind of pilot valve balanced structure, including valve body, it further include pilot valve, spring, main valve plug and upper cover, the upper cover is fixedly connected on the valve body, one end of the main valve plug opens up fluted along its axial direction, the other end of the main valve plug offers the channel being connected to the groove, the main valve plug outer peripheral surface offers balance hole, the balance hole is connected to the channel, the balance hole is between the channel and the groove, the channel matches with the pilot valve, the utility model pilot valve balanced structure is when in use, using clearance flow between main valve plug and upper bush, it opens up elongated hole on main valve plug instead of original and balances, pilot-operated type structure suitable for High Pressure Difference medium, be conducive to be opened pilot valve with small thrust, such main valve After the balance for the upper and lower cavity medium that core is just realized, so that high-pressure differential valve smooth opening.
Description
Technical field
The utility model relates to valve technology fields, more particularly, to a kind of pilot valve balanced structure.
Background technique
As shown in figure 3, the pilot valve of existing pilot-operated type sleeve control valve, generallys use the balance side for beating elongated hole path
Formula, the processing of elongated hole and transformation performance difficulty, the selection of balancing damping ring, design, improper use will cause the failures such as stuck.
Utility model content
Technical problem to be solved by the utility model is: in order to solve the processing of elongated hole and transformation performance difficulty, balance
The problem of shock ring selection, design, improper use will cause the phenomena of the failure such as stuck now provides a kind of pilot valve balance knot
Structure.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of pilot valve balanced structure, including valve
Body further includes pilot valve, spring, main valve plug and upper cover, and the upper cover is fixedly connected on the valve body, the main valve plug
One end opens up fluted along its axial direction, and the other end of the main valve plug offers the channel being connected to the groove, the main valve
Core outer peripheral surface offers balance hole, and the balance hole is connected to the channel, and the balance hole is located at the channel and described recessed
Between slot, the channel matches with the pilot valve, and one end of the pilot valve is arranged in the channel, the elder generation
The other end of guide valve core passes through the upper cover and protrudes from outside valve body, and wedge is provided in the pilot valve, the spring
One end is supported and is located on the wedge, and the other end of the spring, which supports, to be located on the main valve plug, and the spring is located at the channel
It is interior, sliding slot is offered on the upper lid, the main valve plug is arranged in the sliding slot, the main valve plug and the sliding slot, between
With gap.Using clearance flow between main valve plug and upper bush, meets the needs of balanced flow.
The beneficial effects of the utility model are: the utility model pilot valve balanced structure is when in use, using main valve plug and
Clearance flow between upper bush opens up elongated hole on main valve plug and balances instead of original, elder generation suitable for High Pressure Difference medium
Conduction structure is conducive to be opened pilot valve with small thrust, after the balance for the upper and lower cavity medium that such main valve plug is just realized,
So that high-pressure differential valve smooth opening, avoids the pilot valve of existing pilot-operated type sleeve control valve, generallys use and beat elongated hole
The balance mode in channel, the processing of elongated hole and transformation performance difficulty, the selection of balancing damping ring, design, improper use will cause
The problem of failures such as stuck.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the mounting structure schematic diagram of existing pilot valve and main valve plug；
Fig. 2 is the partial enlarged view of A in Fig. 1；
Fig. 3 is the main view of the prior art.
In figure: 1, pilot valve, 2, spring, 3, main valve plug, 301, groove, 302, channel, 303, balance hole, 4, upper cover,
401, sliding slot, 5, wedge, 6, elongated hole.
Specific embodiment
Presently in connection with attached drawing, the utility model is described in more detail.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
Embodiment
As shown in Figs. 1-2, a kind of pilot valve balanced structure, including valve body further include pilot valve 1, spring 2, main valve plug 3
With upper cover 4, the upper cover 4 is fixedly connected on the valve body, and one end of the main valve plug 3 opens up fluted 301 along its axial direction,
The other end of the main valve plug 3 offers the channel 302 being connected to the groove 301, and 3 outer peripheral surface of main valve plug offers flat
Weighing apparatus hole 303, the balance hole 303 are connected to the channel 302, and the balance hole 303 is located at the channel 302 and the groove
Between 301, the channel 302 matches with the pilot valve 1, and one end of the pilot valve 1 is arranged in the channel 302
Interior, the other end of the pilot valve 1 passes through the upper cover 4 and protrudes from outside valve body, is provided with wedge in the pilot valve 1
5, one end of the spring 2, which is supported, to be located on the wedge 5, and the other end of the spring 2, which supports, to be located on the main valve plug 3, described
Spring 2 is located in the channel 302, and sliding slot 401 is offered in the upper cover 4, and the main valve plug 3 is arranged in the sliding slot 401
It is interior, there is gap between the main valve plug 3 and the sliding slot 401.Wedge 5 is for the limit to spring 2, main valve plug 3 and cunning
Form cavity between slot 401, using clearance flow between main valve plug 3 and upper cover 4, instead of it is original opened up on main valve plug 3 it is thin
Long hole 6 balances.
Above-mentioned pilot valve balanced structure is full of high-pressure medium when using in valve body, medium is located at the groove of main valve plug 3
301 one end, channel 302 is blocked by pilot valve 1 at this time, and balance hole 303 is in close state, at this time due to spool and upper cover 4
Between pressure and spool be located at groove 301 differing pressure it is very big, due to the biggish pressure difference of about 3 main valve plug, make winner
Spool 3 can not be opened, and under the active force of spring 2, lift pilot valve 1, so that the high-pressure medium in spool groove 301 is logical
Overbalance hole 303 simultaneously reaches the gap between upper cover 4 and main valve plug 3, so that the pressure and main valve of upper cover 4 and main valve plug 3
Core 3 is located at the pressure balance at groove 301, opens main valve plug 3 to realize.
The above-mentioned desirable embodiment according to the utility model is enlightenment, through the above description, relevant staff
Completely various changes and amendments can be carried out in the range of without departing from this item utility model technical idea.This item is practical
Novel technical scope is not limited to the contents of the specification, it is necessary to determine that its is technical according to scope of the claims
Range.
Claims (1)
1. a kind of pilot valve balanced structure, including valve body, it is characterised in that: further include pilot valve (1), spring (2), main valve plug
(3) it is fixedly connected on the valve body with upper cover (4), the upper cover (4), one end of the main valve plug (3) is opened up along its axial direction
Fluted (301), the other end of the main valve plug (3) offer the channel (302) being connected to the groove (301), the master
Spool (3) outer peripheral surface offers balance hole (303), and the balance hole (303) is connected to the channel (302), the balance hole
(303) between the channel (302) and the groove (301), the channel (302) and the pilot valve (1) phase
Match, in the channel (302), the other end of the pilot valve (1) passes through described for one end setting of the pilot valve (1)
Upper cover (4) simultaneously protrudes from outside valve body, is provided with wedge (5) on the pilot valve (1), and one end of the spring (2), which is supported, to be located at
On the wedge (5), the other end of the spring (2), which supports, to be located on the main valve plug (3), and the spring (2) is located at described logical
It in road (302), is offered sliding slot (401) on the upper cover (4), main valve plug (3) setting is in the sliding slot (401), institute
Stating has gap between main valve plug (3) and the sliding slot (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822110701.7U CN209245383U (en) | 2018-12-14 | 2018-12-14 | Pilot valve balanced structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822110701.7U CN209245383U (en) | 2018-12-14 | 2018-12-14 | Pilot valve balanced structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209245383U true CN209245383U (en) | 2019-08-13 |
Family
ID=67533054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822110701.7U Active CN209245383U (en) | 2018-12-14 | 2018-12-14 | Pilot valve balanced structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209245383U (en) |
-
2018
- 2018-12-14 CN CN201822110701.7U patent/CN209245383U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |