CN207715860U - A kind of pressure reduction structure with check-valves - Google Patents
A kind of pressure reduction structure with check-valves Download PDFInfo
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- CN207715860U CN207715860U CN201721293141.2U CN201721293141U CN207715860U CN 207715860 U CN207715860 U CN 207715860U CN 201721293141 U CN201721293141 U CN 201721293141U CN 207715860 U CN207715860 U CN 207715860U
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- valve
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- pressure reduction
- reduction structure
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Abstract
The utility model provides a kind of pressure reduction structure with check-valves, including main valve, flow controller, two check-valves, ball valve and decompression pilot valve；The pipeline of one end of the main valve is equipped with check-valves and flow controller, the decompression pilot valve of connecting on pipeline, is then divided into two branch pipes, one of unicom ball valve, and with the other end unicom of the main valve；Another pipeline is sequentially connected in series a check-valves, and with the upper end unicom of the main valve；It is set there are one branch across the pipeline of the flow controller, which is equipped with needle-valve, the upper end unicom of the needle-valve and the main valve.Pressure reduction structure pressure reducing valve described in the utility model with check-valves adds check-valves, two-in-one, reduces cost, compact-sized, saves installation space；Wherein relief valve body valve deck is precision stainless steel casting, and material is uniform, and appearance wherein diaphragm thickness only has 0.5mm, and reaction is very sensitive, while having enough intensity again.
Description
Technical field
The utility model belongs to machinery field, more particularly, to a kind of pressure reduction structure with check-valves.
Background technology
Pressure reducing valve is by adjusting, inlet pressure being reduced to the outlet pressure of a certain needs, and by the energy of medium itself
Amount, makes outlet pressure automatically keep stable valve.From the viewpoint of hydrodynamics, pressure reducing valve, which is a local resistance, to be become
The restricting element of change makes the kinetic energy of flow velocity and fluid change, causes the different pressure losses that is, by change orifice size, from
And achieve the purpose that decompression.Then by the adjusting of control and regulating system, the fluctuation of downstream pressure is made to balance each other with spring force,
Downstream pressure is set to be kept constant in certain error range.In certain Decompression Controlling circuits, the outlet pressure of pressure reducing valve is
For controlling the control oil liquid pressure size of electro-hydraulic reversing valve or external control sequence valve etc., when electro-hydraulic reversing valve or external control sequence valve
After commutation or work, pressure reducing valve oil outlet flow becomes zero, but pressure also needs the pressure for keeping originally setting up.In this case,
Because valve outlet flow is zero, the flow for flowing through pressure-reduction outlet only has pilot flow.Since pilot flow is seldom, generally 2L/min it
It is interior, therefore main valve pressure-reduction outlet, substantially near closed positions (aperture is minimum), pilot flow is flowed out by triangular groove or scalene cone,
If main valve plug coordinated pine or abrasion excessive, leakage rate increases.By Flow continuity theorem, this partial compromise amount is also necessary
Come from main valve plug damping hole stream, that is, the flow for flowing through damping hole is made of pilot flow and leakage rate two parts, and damps hole face
Product and main spool spring chamber oil liquid pressure are unchanged (spring cavity oil liquid pressure is determined by the pressure spring pre compressed magnitude mixed up), to make
Increased by the flow of damping hole, necessarily causes the raising of main valve cavity of resorption oil liquid pressure.Therefore, it is necessary to check-valves and pressure reducing valves
Cooperation auxiliary main valve carries out hydraulic pressure adjusting.
Utility model content
In view of this, the utility model is directed to a kind of pressure reduction structure with check-valves, to solve check-valves and decompression
The cooperation auxiliary main valve of valve carries out hydraulic pressure regulation problem.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of pressure reduction structure with check-valves, including main valve, flow controller, two check-valves, ball valve and decompression pilot valve；
The pipeline of one end of the main valve is equipped with check-valves and flow controller, the decompression pilot valve of connecting on pipeline, so
After be divided into two branch pipes, one of unicom ball valve, and with the other end unicom of the main valve；Another pipeline is sequentially connected in series
A upper check-valves, and with the upper end unicom of the main valve；It is set there are one branch across the pipeline of the flow controller, the branch
It is equipped with needle-valve, the upper end unicom of the needle-valve and the main valve；
The wherein described decompression pilot valve includes valve deck, valve rod, valve body and flap；The valve deck up and down, adjusting screw
Lower end is connected with locking nut, and the opening of the valve deck is inserted into the bottom end of the adjusting screw；The inside cavity of the valve deck
Equipped with spring, spring bearer plate is supported in the upper end of the spring, and the bottom end of the adjusting screw is supported with the spring bearer plate；It is described
Valve deck is connect with valve body by fastener, tapped on the valve rod, sequentially passes through diaphragm and diaphragm pressing plate, and the upper end is fixed
There is nut, and be inserted into spring from bottom, diaphragm pressing plate has been supported in the lower end of the spring, and diaphragm pressing plate lower end is supported
Diaphragm, the diaphragm are clipped between the valve deck and valve body；Flap plug is blocked under the valve body and is brought out in plug screw
Mouthful.
The decompression pilot valve is matched with clamp bracket, and the clamp bracket includes cross bar, the both ends difference of the cross bar
Equipped with vertical pole, the holder of Y types is respectively equipped on each vertical pole；Through-hole is respectively equipped on the vertical pole, the through-hole is supported with folder
Tight bolt.
Fishbolt is equipped with cushion pad on the clamp bracket.
The material of the cushion pad is rubber.
The thickness of the cushion pad is 2mm to 3mm.
Pressure reduction structure with check-valves further includes filter, and the filter and the main valve unicom.
It is covered by sheath outside the adjusting screw.
Butterfly spring is equipped between the nut and the diaphragm pressing plate.
Sealing ring is equipped between the flap and the plug screw.
Compared with the existing technology, the pressure reduction structure described in the utility model with check-valves has the advantage that：
Pressure reduction structure pressure reducing valve described in the utility model with check-valves adds check-valves, two-in-one, reduces cost, structure
It is compact, save installation space；Wherein relief valve body valve deck is precision stainless steel casting, and material is uniform, appearance wherein diaphragm
Thickness only has 0.5mm, and reaction is very sensitive, while having enough intensity again；Valve body valve deck is precision stainless steel casting and forming；
Flap is workpiece vulcanized rubber, makes it have very high fatigue life.
Description of the drawings
The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model.
In attached drawing：
Fig. 1 is the structural schematic diagram of the pressure reduction structure with check-valves described in the utility model embodiment；
Fig. 2 is the structural schematic diagram of the pressure reducing valve described in the utility model embodiment.
1- sheaths；2- adjusting screws；3- locking nuts；4- spring bearer plates；5- valve decks；6- springs；7- nuts；8- butterfly bullets
Spring；9- diaphragm pressing plates；10- fasteners；11- diaphragms；12- valve rods；13- valve bodies；14- flaps；15- sealing rings；16- plug screws；17-
Main valve；18- flow controllers；19- needle-valves；20- check-valves；21- depressurizes pilot valve；22- filters；23- ball valves.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
As shown in Figure 1, a kind of pressure reduction structure with check-valves, including main valve 17, flow controller 18, two check-valves 20, balls
Valve 23 and decompression pilot valve 21；
The pipeline of one end of the main valve 17 is equipped with check-valves 20 and flow controller 18, the decompression guide of connecting on pipeline
Valve 21, is then divided into two branch pipes, one of unicom ball valve 23, and with the other end unicom of the main valve 17；Another
Pipeline is sequentially connected in series a check-valves 20, and with the upper end unicom of the main valve 17；Across the pipeline of the flow controller 18
If there are one branch, which is equipped with needle-valve 19, the upper end unicom of the needle-valve 19 and the main valve 17；
The wherein described decompression pilot valve 21 includes valve deck 5, valve rod 12, valve body 13 and flap 14；About 5 valve deck passes through
Logical, 2 lower end of adjusting screw is connected with locking nut 3, and the opening of the valve deck 5 is inserted into the bottom end of the adjusting screw 2；It is described
The inside cavity of valve deck 5 is equipped with spring 6, and spring bearer plate 4, the bottom end of the adjusting screw 2 and institute are supported in the upper end of the spring 6
Spring bearer plate 4 is stated to support；The valve deck 5 is connect with valve body 13 by fastener 10, tapped on the valve rod 12, is worn successively
Diaphragm 11 and diaphragm pressing plate 9 are crossed, the upper end is fixed with nut 7, and is inserted into spring 6 from bottom, and the lower end of the spring 6 is supported
There is a diaphragm pressing plate 9 on top, and diaphragm 11 is supported in 9 lower end of diaphragm pressing plate, the diaphragm 11 be clipped in the valve deck 5 and valve body 13 it
Between；Flap 14 is filled in plug screw 16, and blocks the lower end outlet of the valve body 13.
The decompression pilot valve 21 is matched with clamp bracket, and the clamp bracket includes cross bar, the both ends point of the cross bar
Not She You vertical pole, the holder of Y types is respectively equipped on each vertical pole；Through-hole is respectively equipped on the vertical pole, the through-hole is supported with
Fishbolt.
Fishbolt is equipped with cushion pad on the clamp bracket.
The material of the cushion pad is rubber.
The thickness of the cushion pad is 2mm to 3mm.
Pressure reduction structure with check-valves further includes filter 6, and the filter 6 and 17 unicom of the main valve.
It is covered by sheath 1 outside the adjusting screw 2.
Butterfly spring 8 is equipped between the nut 7 and the diaphragm pressing plate 9.
Sealing ring is equipped between the flap 14 and the plug screw 16.
When water pump failure, or power-off suddenly, input end stop supplying water, and pressure increases suddenly, and outlet end hydraulic pressure passes through
Control piper opens check-valves 20, into control chamber/main valve epicoele；Outlet pressures enter decompression pilot valve 21 and export simultaneously
End, acts on diaphragm lower plane, and decompression pilot valve 21 is closed；Pressure withstands forward check-valves 20 by needle-valve 19, makes its closing.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of pressure reduction structure with check-valves, it is characterised in that：Including main valve (17), flow controller (18), two check-valves
(20), ball valve (23) and decompression pilot valve (21)；
The pipeline of one end of the main valve (17) is equipped with check-valves (20) and flow controller (18), connect on pipeline it is described depressurize to
Pilot valve (21) is then divided into two branch pipes, one of unicom ball valve (23), and joins with the other end of the main valve (17)
It is logical；Another pipeline is sequentially connected in series a check-valves (20), and with the upper end unicom of the main valve (17)；Across the section
The pipeline of stream device (18) is set there are one branch, which is equipped with needle-valve (19), the needle-valve (19) and the main valve (17)
Upper end unicom；
The wherein described decompression pilot valve (21) includes valve deck (5), valve rod (12), valve body (13) and flap (14)；The valve deck (5)
Up and down, adjusting screw (2) lower end is connected with locking nut (3), and the valve deck is inserted into the bottom end of the adjusting screw (2)
(5) opening；The inside cavity of the valve deck (5) is equipped with spring (6), and spring bearer plate (4) is supported in the upper end of the spring (6),
It is supported with the spring bearer plate (4) bottom end of the adjusting screw (2)；The valve deck (5) passes through fastener with valve body (13)
(10) it connects, it is tapped on the valve rod (12), diaphragm (11) and diaphragm pressing plate (9) are sequentially passed through, the upper end is fixed with spiral shell
Female (7), and be inserted into spring (6) from bottom, diaphragm pressing plate (9), the diaphragm pressing plate have been supported in the lower end of the spring (6)
(9) diaphragm (11) is supported in lower end, and the diaphragm (11) is clipped between the valve deck (5) and valve body (13)；Flap (14) is filled in spiral shell
It fills in (16), and blocks the lower end outlet of the valve body (13)；
The pressure reduction structure further includes filter (22), and the filter (22) and the main valve (17) unicom；
It is covered by sheath (1) outside the adjusting screw (2)；
Butterfly spring (8) is equipped between the nut (7) and the diaphragm pressing plate (9)；
Sealing ring (15) is equipped between the flap (14) and the plug screw (16).
2. the pressure reduction structure according to claim 1 with check-valves, it is characterised in that：Decompression pilot valve (21) matching
It includes cross bar to have clamp bracket, the clamp bracket, and the both ends of the cross bar are respectively equipped with vertical pole, are respectively equipped on each vertical pole
The holder of Y types；Through-hole is respectively equipped on the vertical pole, the through-hole is supported with fishbolt.
3. the pressure reduction structure according to claim 2 with check-valves, it is characterised in that：Fishbolt on the clamp bracket
It is equipped with cushion pad.
4. the pressure reduction structure according to claim 3 with check-valves, it is characterised in that：The material of the cushion pad is rubber
Glue.
5. the pressure reduction structure according to claim 3 with check-valves, it is characterised in that：The thickness of the cushion pad is 2mm
To 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721293141.2U CN207715860U (en) | 2017-10-09 | 2017-10-09 | A kind of pressure reduction structure with check-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721293141.2U CN207715860U (en) | 2017-10-09 | 2017-10-09 | A kind of pressure reduction structure with check-valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207715860U true CN207715860U (en) | 2018-08-10 |
Family
ID=63064386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721293141.2U Active CN207715860U (en) | 2017-10-09 | 2017-10-09 | A kind of pressure reduction structure with check-valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207715860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340416A (en) * | 2018-12-13 | 2019-02-15 | 阜宁县元丰泵业有限公司 | A kind of pump outlet check-valves being easily installed |
-
2017
- 2017-10-09 CN CN201721293141.2U patent/CN207715860U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340416A (en) * | 2018-12-13 | 2019-02-15 | 阜宁县元丰泵业有限公司 | A kind of pump outlet check-valves being easily installed |
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