CN202992271U - Buffering valve structure - Google Patents
Buffering valve structure Download PDFInfo
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- CN202992271U CN202992271U CN 201220637549 CN201220637549U CN202992271U CN 202992271 U CN202992271 U CN 202992271U CN 201220637549 CN201220637549 CN 201220637549 CN 201220637549 U CN201220637549 U CN 201220637549U CN 202992271 U CN202992271 U CN 202992271U
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- valve
- bypass channel
- valve body
- throttle
- rod
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Abstract
The utility model relates to a buffering valve structure which comprises a valve body and a valve rod, wherein the valve rod is installed inside a valve cavity of the valve body, a first backflow channel and a second backflow channel are installed on one side face of the valve body at intervals and are communicated with the valve cavity, and a first circulation channel and a second circulation channel are installed on another side face of the valve body at intervals and communicated with the valve cavity. The buffering valve structure is characterized in that a first bypass channel and a second bypass channel is installed on another side face of the valve body at intervals and communicated with the valve cavity, the first bypass channel and the second bypass channel are respectively connected with a first throttle valve and a second throttle valve which are respectively installed outside the valve body, and the valve rod is provided with a plurality sealing portions which are selectively communicated with the backflow channels, the circulation channels and the bypass channels. Compared with the prior art, the throttle valves of the buffering valve structure are installed outside the valve body, the interior structure of the valve body is simplified, processing difficulty is lowered, and adjustment of the throttle valves is convenient and simple.
Description
Technical field
The utility model relates to a kind of trimmer valve structure.
Background technique
Piston cylinder is at a high speed or during high pressure work, the movement velocity of piston rod and piston is very fast, and like this, when piston rapidly moved to two limit positions of cylinder body front-end and back-end, the end cap of piston and cylinder body inevitably will bump.Can not only produce very large collision noise, and inevitably can produce more serious wearing and tearing to piston and cylinder end caps.After using a period of time, will certainly cause certain damage to piston and cylinder end caps; Pressure is higher, and speed is faster, and the working life of this piston cylinder is shorter.
For this reason, notification number is that CN102359620 discloses a kind of " structure of reversing valve ", it includes valve body, is arranged on the first valve pocket in described valve body and is arranged on the manipulation selector valve that the first valve rod in the first valve pocket consists of, described valve body is provided with the first outlet, second outlet of discharging for pressure medium and the import that enters for pressure medium, and the first return flow line and the second return flow line that are communicated with described the first outlet, the second export and import by described the first valve pocket; It is characterized in that also being provided with the second valve pocket on described valve body, be provided with the second valve rod that the second valve pocket is divided into first minute chamber and second minute chamber in the second valve pocket; Also be provided with the first circulation canal of being communicated with described first minute chamber and external device on described valve body, be communicated with the second circulation canal of described second minute chamber and external device; Also be provided with in described valve body make pressure medium by described the first circulation canal flow to described first minute chamber the first damping hole, make pressure medium be flowed to second damping hole in described second minute chamber by described the second circulation canal, also be provided with on described valve body make described pressure medium by described first minute chamber flow to described the first circulation canal the first throttle valve, make pressure medium be flowed to the second throttle valve of described the second circulation canal by described second minute chamber;
Under a state, external force drives the second valve rod action, described import internal pressure medium is through after handling selector valve, an end that is communicated with a circulation canal by a minute chamber of a return flow line, the second valve pocket, the other end of another circulation canal is communicated with another minute chamber of the second valve pocket again, through another return flow line, handle selector valve and an outlet is communicated with, with relatively large flow work;
Under another state, external force drives the second valve rod counteragent, the pressure medium of import is through after handling selector valve, a minute chamber by a return flow line, the second valve pocket, need through with this minute the chamber be communicated with an end of a circulation canal to corresponding throttle valve, the other end of another circulation canal need be by the damping hole of another minute on the chamber of the second valve pocket, through another return flow line, handle selector valve and an outlet is communicated with, with relative small flow work.
This selector valve is realized the change flow control of pressure medium by the cooperation of handling selector valve and action selector valve, at piston movement when soon touching the end of piston cylinder, reduce the capacity of reflux of pressure medium, increase the resistance of piston movement, thereby slow down the movement rate of piston, make piston slowly touch the end of piston cylinder, when having avoided piston to move rapidly to the gouging abrasion of piston and piston cylinder end, effectively extend the working life of piston cylinder, guaranteed simultaneously safety in operation and the stability of piston cylinder.
But this structure of reversing valve will be handled selector valve and the action selector valve is arranged in same valve body, the valve inner complex structure, and accuracy of manufacturing requires high, makes difficulty; And, arrange simultaneously in same valve body and handle selector valve and action selector valve, and the volume of valve body does not change, the intensity of valve body and all being under some influence the working life of whole selector valve, and the adjusting of the buffer speed of this selector valve is very inconvenient.
Summary of the invention
Thereby technical problem to be solved in the utility model is the present situation for prior art provides a kind of piston rod can variable motion and the trimmer valve structure of adjustment movement speed protection piston cylinder easily.
The utility model solves the problems of the technologies described above the technological scheme that adopts: a kind of trimmer valve structure, comprise valve body and the interior valve rod of the valve pocket that is arranged on described valve body, be interval with the first return flow line and the second return flow line that is connected with described valve pocket on a side of valve body, be interval with the first circulation canal and the second circulation canal that are connected with described valve pocket on another side of valve body; It is characterized in that also being interval with the first bypass channel and the second bypass channel that is connected with described valve pocket on another side of described valve body; Described the first bypass channel be connected the second bypass channel and connect respectively and be arranged on described valve body outer first throttle valve and the second throttle valve; Described valve rod is provided with above-mentioned each return flow line and each self-circulation channel, a plurality of sealed departments of being communicated with of bypass channel selectivity separately.
Described first throttle valve is identical with the structure of the second throttle valve, include throttle valve body and damping spool, the valve pocket of each described throttle valve body is communicated with respectively each self-corresponding the first bypass channel and the second bypass channel, is interval with a plurality of throttle orifices on the side of described throttle valve body.
Each described throttle orifice is equipped with the meshed web plate of tool outward.
In order to regulate easily, change the movement velocity of piston rod, described throttle valve body is provided with screw, and described damping spool is threaded in described screw and part exposes to described throttle valve body.By the degree of depth of damping adjusting spool in the cavity of throttle valve body, can change the damping spool to the area that stops of screw, thus the adjusting joint Flow Velocity.
In above-mentioned each scheme, in order to facilitate the control of valve rod, and further simplify the structure of valve rod, reduce the manufacture difficulty of valve rod, described valve rod can comprise that by separately-driven the first valve rod of external force and the second valve rod, described the first valve rod is provided with a plurality of sealed departments corresponding with described the first return flow line, the first circulation canal and the first bypass passageways; Described the second valve rod is provided with a plurality of sealed departments corresponding with described the second return flow line, the second circulation canal and the second bypass passageways.
In above-mentioned each scheme, described external force can be the power of solenoid valve, pneumatic valve, hydrovalve, mechanical valve or manually operated valve generation.
Compared with prior art, trimmer valve structure provided by the utility model can make with it matching used piston rod do variable motion, has avoided the powerful collision of piston cylinder body, and piston cylinder is played a very good protection, and has effectively extended the working life of piston cylinder; And can change the movement velocity of piston cylinder by the flow of regulating throttle valve, simultaneously throttle valve partly is arranged on outside valve body, namely simplify the internal structure of valve body, reduce difficulty of processing, and made the adjusting of throttle valve more easy.
Description of drawings
Fig. 1 is the cross-sectional schematic of the assembly structure of the quick working state of the utility model embodiment;
Fig. 2 the utility model embodiment is the cross-sectional schematic of the assembly structure of working state at a slow speed.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, this trimmer valve structure comprises:
Valve body 1, inside is provided with the valve pocket 11 that connects on length direction, be interval with the first return flow line 12 and the second return flow line 13 that are connected with valve pocket 11 on a side of valve body, be interval with the first bypass channel 17, the first circulation canal 15, the second circulation canal 16 and the second bypass channel 18 that are connected with valve pocket 11 on another side of valve body.
Valve rod, be arranged in valve pocket 11, comprise by the first valve rod 21 and the second valve rod 22 that are arranged on two outer solenoid valves of valve body and drive respectively connection, be equipped with the sealed department 23 corresponding with the first return flow line 12, the second return flow line 13, the first bypass channel 17, the first circulation canal 15, the second circulation canal 16 and the second bypass channel 18 on valve body on each valve rod.Sealed department in the present embodiment is the flange that is arranged on each valve rod, and described flange is provided with annular groove, is provided with seal ring in groove, like this by the side-to-side movement of valve rod, makes return flow line and each self-circulation channel, bypass channel selectivity connection separately.
The structure of first throttle valve 3 and 4, two throttle valve of the second throttle valve is identical, is arranged on outside valve body 1, and the valve pocket of two throttle valve connects respectively the first bypass channel 17 and the second bypass channel 18, is used for the flow rate of control valve cavity pressure medium.The structure of two throttle valve includes throttle valve body 31,41 and damping spool 35,45, is provided with throttling valve pocket 32,42 in throttle valve body 31,41, throttling valve pocket 32,42 be tightly connected respectively the first bypass channel 17 and the second bypass channel 18; Be interval with the first segment discharge orifice 33 that is connected with throttling valve pocket 32,42,43 and second section discharge orifice 34,44 on throttle valve body 31,41 sidewall; Each throttle orifice is equipped with the meshed web plate 36 of tool, 46 outward, and it can be 2,4 or 6,8 that throttle orifice distributes on the throttle valve body sidewall.
Valve rod comprises by separately-driven the first valve rod 21 of external force and the second valve rod 22, the first valve rods 21 and is provided with a plurality of sealed departments corresponding with the first return flow line 12, the first circulation canal 15 and the first bypass channel 17; The second valve rod 22 is provided with a plurality of sealed departments corresponding with the second return flow line 13, the second circulation canal 16 and the second bypass channel 18.External force is the power that solenoid valve, pneumatic valve, hydrovalve, mechanical valve or manually operated valve produce.
Trimmer valve structure applications in the present embodiment is illustrated its working procedure in piston cylinder.
The first circulation canal 15 and second circulation canal 16 of this trimmer valve is emptying respectively.
Go the journey working state:
control valve drives the first valve rod 21 motions, make the first return flow line 12 be communicated with the first circulation canal 15 and the first bypass channel 17 by valve pocket 11 simultaneously, because the damping of the first bypass channel 17 is larger, therefore pressure medium mainly enters outside space through the first circulation canal 15 with large flow, the piston rod fast moving, when piston rod moves to desired location, the control method drives the first valve rod 21 actions, close being communicated with of the first circulation canal 15 and the first return flow line 12, only be communicated with the first bypass channel 17, valve pocket 11 and the first return flow line 12, this moment, pressure medium can only enter in first throttle valve 3 by the first bypass channel 17, enter outside space with small flow, piston rod moves at a slow speed, slowly touch the end face of piston rod, when having avoided piston to move rapidly to the gouging abrasion of piston, effectively extended the working life of piston cylinder, safety in operation and the stability of piston cylinder have been guaranteed simultaneously.
The backhaul working state:
Working principle is identical with the above-mentioned journey working state of going, be specially: during backhaul, another control valve drives the second valve rod 22 motions, make the second return flow line 13, the second circulation canal 16 and the second bypass channel 18 all be communicated with valve pocket 11, because the damping of the second bypass channel 18 is larger, therefore pressure medium mainly enters outside space through the second circulation canal 16 with large flow by the second return flow line 13, the piston rod fast moving; When piston rod moves to desired location, control valve drives the second valve rod 22 actions, close being communicated with of the second circulation canal 16 and the second return flow line 13, only be communicated with the second bypass channel 18 and valve pocket 11 and the second return flow line 13, this moment, pressure medium can only enter in the second throttle valve 4 by the second bypass channel 18, enter outside space with small flow, piston rod moves at a slow speed, slowly touches the end face of piston rod.
Claims (8)
1. trimmer valve structure, comprise valve body and the interior valve rod of the valve pocket that is arranged on described valve body, be interval with the first return flow line and the second return flow line that is connected with described valve pocket on a side of valve body, be interval with the first circulation canal and the second circulation canal that are connected with described valve pocket on another side of valve body; It is characterized in that also being interval with the first bypass channel and the second bypass channel that is connected with described valve pocket on another side of described valve body; Described the first bypass channel be connected the second bypass channel and connect respectively and be arranged on described valve body outer first throttle valve and the second throttle valve; Described valve rod is provided with above-mentioned each return flow line and each self-circulation channel, a plurality of sealed departments of being communicated with of bypass channel selectivity separately.
2. trimmer valve structure according to claim 1, it is characterized in that described first throttle valve is identical with the structure of the second throttle valve, include throttle valve body and damping spool, the valve pocket of each described throttle valve body is communicated with respectively each self-corresponding the first bypass channel and the second bypass channel, is interval with a plurality of throttle orifices on the side of described throttle valve body.
3. trimmer valve structure according to claim 2, is characterized in that each described throttle orifice is equipped with the meshed web plate of tool outward.
4. according to claim 2 or 3 described trimmer valve structures, is characterized in that described throttle valve body is provided with screw, and described damping spool is threaded in described screw and part exposes to described throttle valve body.
5. according to claim 1,2 or 3 described trimmer valve structures, it is characterized in that described valve rod comprises that by separately-driven the first valve rod of external force and the second valve rod, described the first valve rod is provided with a plurality of sealed departments corresponding with described the first return flow line, the first circulation canal and the first bypass channel; Described the second valve rod is provided with a plurality of sealed departments corresponding with described the second return flow line, the second circulation canal and the second bypass channel.
6. trimmer valve structure according to claim 4, it is characterized in that described valve rod comprises that by separately-driven the first valve rod of external force and the second valve rod, described the first valve rod is provided with a plurality of sealed departments corresponding with described the first return flow line, the first circulation canal and the first bypass channel; Described the second valve rod is provided with a plurality of sealed departments corresponding with described the second return flow line, the second circulation canal and the second bypass channel.
7. trimmer valve structure according to claim 5, is characterized in that described external force is the power that solenoid valve, pneumatic valve, hydrovalve, mechanical valve or manually operated valve produce.
8. trimmer valve structure according to claim 6, is characterized in that described external force is the power that solenoid valve, pneumatic valve, hydrovalve, mechanical valve or manually operated valve produce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220637549 CN202992271U (en) | 2012-11-28 | 2012-11-28 | Buffering valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220637549 CN202992271U (en) | 2012-11-28 | 2012-11-28 | Buffering valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992271U true CN202992271U (en) | 2013-06-12 |
Family
ID=48563451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220637549 Expired - Fee Related CN202992271U (en) | 2012-11-28 | 2012-11-28 | Buffering valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992271U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286968A (en) * | 2015-06-10 | 2017-01-04 | 杜景东 | Extra-high tension unit, valving and valving control method |
| CN106870499A (en) * | 2017-04-28 | 2017-06-20 | 太原科技大学 | A kind of damping buffering valve |
-
2012
- 2012-11-28 CN CN 201220637549 patent/CN202992271U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286968A (en) * | 2015-06-10 | 2017-01-04 | 杜景东 | Extra-high tension unit, valving and valving control method |
| CN106286968B (en) * | 2015-06-10 | 2019-12-20 | 杜景东 | Ultrahigh pressure equipment, valve device and valve device control method |
| CN106870499A (en) * | 2017-04-28 | 2017-06-20 | 太原科技大学 | A kind of damping buffering valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20151128 |