CN209324918U - A kind of fluid pressure buffer unit - Google Patents
A kind of fluid pressure buffer unit Download PDFInfo
- Publication number
- CN209324918U CN209324918U CN201821717954.4U CN201821717954U CN209324918U CN 209324918 U CN209324918 U CN 209324918U CN 201821717954 U CN201821717954 U CN 201821717954U CN 209324918 U CN209324918 U CN 209324918U
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- flow
- current limliting
- front housing
- limiting valve
- valve body
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Abstract
The utility model discloses a kind of fluid pressure buffer units, the fluid pressure buffer unit includes flow-limiting valve front housing (1), steel ball (2), spring (3), current limliting valve body (4), current limliting valve spring retainer (6) and flow-limiting valve rear shell (7), the flow-limiting valve front housing and the flow-limiting valve rear shell, which are combined, constitutes hollow current limliting valve chest, the flow-limiting valve rear shell end-enclosed, the current limliting valve body (4) of the fluid pressure buffer unit are mounted in flow-limiting valve front housing (1).The fluid pressure buffer unit structure of the utility model is ingenious, inexpensive, high-efficient.
Description
Technical field
The utility model relates to machinery fields, and in particular to fluid pressure buffer unit.
Background technique
There is the mechanism of certain mass in hydraulic system using Driven by Hydraulic Cylinder, when hydraulic cylinder to stroke end
With larger kinetic energy, do not make deceleration processing such as, mechanical collision will occur for hydraulic cylinder piston and cylinder cap, generate impact, noise, have broken
Bad property.To mitigate and preventing this harm from occurring, therefore deceleration device can be set in hydraulic circuit or set buffering in cylinder body
Device.
In addition, pressure needed for cylinder, oil cylinder is larger in existing hydraulic system, generally it is both provided in the front end of oil cylinder
Buffer gear, such as damper piston.For middle-and-high voltage system, ancillary measure is also needed to carry out the impact in cushion cylinder movement, in oil cylinder
Travel switch is arranged close to travel position in both ends, by the flow of travel switch control hydraulic cylinder；As cylinder movement to stroke is opened
At pass, travel switch sends signal, and cutting or limitation enter the hydraulic fluid flow rate of oil cylinder, and cylinder movement slows down, finally by oil cylinder
Interior buffer unit is buffered.
But existing pressure buffer device is at high cost, service life is short, design is not exquisite enough.
Utility model content
The purpose of the utility model is to provide a kind of clever structure, low cost, efficient fluid pressure buffer units.
Specifically, the utility model provides a kind of fluid pressure buffer unit, which is characterized in that the fluid pressure is slow
Flushing device includes flow-limiting valve front housing, steel ball, spring, current limliting valve body, fixing piece, current limliting valve spring retainer and flow-limiting valve rear shell, described
Flow-limiting valve front housing and the flow-limiting valve rear shell, which are combined, constitutes hollow current limliting valve chest, flow-limiting valve rear shell end envelope
It closing, the current limliting valve body of the fluid pressure buffer unit is mounted in flow-limiting valve front housing, and the current limliting valve body is hollow cavity,
Left side is equipped with step for blocking the steel ball, the current limliting valve body-side, the steel ball right positions at be provided with hydraulic fluid port,
To allow when steel ball is open, the hydraulic oil entered from the opening of left part can be flowed out from its side hydraulic fluid port, the spring
It is mounted in the intracorporal hollow cavity of the flow-limiting valve with the steel ball, the spring pocket is on a left side for the current limliting valve spring retainer
Side, first end are fixed with the current limliting valve spring retainer, and the other end is withstood on the steel ball, also, a left side for the current limliting valve body
Hold tapered, the left part of the flow-limiting valve front housing has and the matched tapered indentations of current limliting valve body, the current limliting valve body
Left end and the flow-limiting valve front housing between form throttling crack, the left part of the flow-limiting valve front housing, the throttling crack
Left side is provided with pouring orifice, on the side wall of the flow-limiting valve front housing, the right side of the throttling crack, is provided with buffering hydraulic fluid port.
Preferably, the flow-limiting valve front housing of the fluid pressure buffer unit is fixedly connected with the target device buffered is needed,
Wherein, oil inlet is connect with the pouring orifice of the target device on the left of flow-limiting valve front housing, the buffering of shell side wall before the flow-limiting valve
Hydraulic fluid port is connect with the oil return opening of the target device.
Preferably, the gap between the cone-shaped valve head and flow-limiting valve front housing for adjusting current limliting valve body can between 2-25mm
It adjusts.
Preferably, on the conical section outer surface of the left end of the current limliting valve body, it is provided with lateral, spaced apart sawtooth
Connected in star, the flow direction for extending perpendicularly to hydraulic oil of groove.
It preferably, further include fixing piece for fixing the throttle valve body.It is highly preferred that the throttle valve body appearance mask
There is fixed chute, the fixing piece can be fixed on any position in the fixed chute, and then adjust the throttle valve
The position of body.
Technical effect
The fluid pressure buffer unit structure of the utility model is ingenious, inexpensive, high efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the fluid pressure buffer unit of the utility model.
Specific embodiment
The utility model is described in detail below in conjunction with figure and embodiment, but not therefore by the utility model
Protection scope is limited among the range of embodiment description.
The valve core movement end of travel that the pressure buffer device of the utility model can be used for hydraulic control system solves hydraulic pressure system
The end impact problem of system.
As shown in Figure 1, the embodiment of the present invention pressure buffer device includes flow-limiting valve front housing 1, steel ball 2, spring 3, current limliting
Valve body 4, fixing piece 5, current limliting valve spring retainer 6 and flow-limiting valve rear shell 7.
Flow-limiting valve front housing and flow-limiting valve rear shell, which are combined, constitutes hollow current limliting valve chest, the right end of flow-limiting valve rear shell
Portion's closing, left part opening are simultaneously tightly connected with front housing 1.
The current limliting valve body 4 of fluid pressure buffer unit is mounted in flow-limiting valve front housing 1, and current limliting valve body 4 is hollow cavity,
Be equipped with step for blocking steel ball 2 in inner cavity on the left of it, 4 side of current limliting valve body, steel ball 2 right positions at be provided with oil
Mouthful, to allow when steel ball is open, the hydraulic oil entered from the opening of left part can be flowed out from its side hydraulic fluid port, spring 3
Be mounted in the hollow cavity in current limliting valve body 4 with steel ball 2,3 sets of the spring left sides in current limliting valve spring retainer 6, first end with
Current limliting valve spring retainer 6 is fixed, and the other end is withstood on steel ball 2, also, the left end of current limliting valve body 4 is tapered, a left side for flow-limiting valve front housing
End have with the matched tapered indentations of current limliting valve body 4, form pinch cock between the left end and flow-limiting valve front housing of current limliting valve body 4
Seam, is provided with pouring orifice on the left of the left part of flow-limiting valve front housing 1, throttling crack, on the side wall of flow-limiting valve front housing 1, throttling crack
Right side, be provided with buffering hydraulic fluid port.6 right part of current limliting valve spring retainer is fixedly mounted in flow-limiting valve rear shell.
The product of the utility model is in use, the flow-limiting valve front housing 1 of fluid pressure buffer unit and the target for needing to buffer
Equipment is fixedly connected, wherein the connection of the pouring orifice of 1 left side oil inlet of flow-limiting valve front housing and target device, 1 side wall of flow-limiting valve front housing
Buffering hydraulic fluid port and target device oil return opening connect.When to target device oiling, from the flow-limiting valve of fluid pressure buffer unit
The oil inlet injection pressure oil in 1 left side of front housing, pressure oil not only pass through current limliting slit and flow through, additionally it is possible to steel ball is opened from left side,
After steel ball crosses the hydraulic fluid port on 4 side wall of current limliting valve body, can out of flow-limiting valve body via the hydraulic fluid port before flow-limiting valve shell-side
Oil return opening (now functioning as pouring orifice) on wall enters target device, when hydraulic oil is flowed out from target device, needs to control
The hydraulic oil of the rate of target device hydraulic oil outflow, target device outflow enters via the oil return opening on shell side wall before flow-limiting valve
It into front housing, enters in flow-limiting valve body, due to the collective effect power of spring and hydraulic oil, steel ball is stuck in flow-limiting valve intracorporal
On rank, the hydraulic fluid port on the left of current limliting valve body is blocked, hydraulic oil is only capable of flowing back by current limliting crack, effectively controls back-flow velocity.
In a kind of preferred implementation, the gap between the cone-shaped valve head and flow-limiting valve front housing of current limliting valve body is in 2-25mm
Between it is adjustable.
In a kind of preferred implementation, on the conical section outer surface of the left end of current limliting valve body 4, be provided with laterally,
Every the incised groove of arrangement, the flow direction for extending perpendicularly to hydraulic oil of groove.This is in order to enable current limliting crack
Interior fluid resistance is bigger, improves current limitation effect.
It is highly preferred that being used to block in the flow-limiting valve body at the step of steel ball, arc steel ball contact surface, the arc are set
Resilient membrane is arranged in the surface of shape steel ball contact surface.
Although the principles of the present invention are described in detail in the preferred embodiment above in conjunction with the utility model,
It should be appreciated by those skilled in the art that above-described embodiment is only the explanation to the exemplary implementation of the utility model, and
The non-restriction to the utility model scope.Details in embodiment does not constitute the limitation to the scope of the utility model,
Without departing substantially from the utility model spirit and scope in the case where, any equivalent transformation based on technical solutions of the utility model, letter
Single replacement etc. is obvious to be changed, and is all fallen within scope of protection of the utility model.
Claims (5)
1. a kind of fluid pressure buffer unit, which is characterized in that the fluid pressure buffer unit include flow-limiting valve front housing (1),
Steel ball (2), spring (3), current limliting valve body (4), current limliting valve spring retainer (6) and flow-limiting valve rear shell (7), the flow-limiting valve front housing and institute
It states flow-limiting valve rear shell and combines the hollow current limliting valve chest of composition, the flow-limiting valve rear shell end-enclosed, the liquid pressure
The current limliting valve body (4) of power buffer unit is mounted in flow-limiting valve front housing (1), and the current limliting valve body (4) is hollow cavity, left side
Equipped with the step for blocking the steel ball (2), current limliting valve body (4) side, the steel ball (2) right positions at be provided with
Hydraulic fluid port, to allow when steel ball is open, the hydraulic oil entered from the opening of left part can be flowed out from its side hydraulic fluid port, described
Spring (3) and the steel ball (2) are mounted in the hollow cavity in the current limliting valve body (4), and the spring (3) covers in the limit
The left side of valve spring retainer (6) is flowed, first end and the current limliting valve spring retainer (6) are fixed, and the other end withstands on the steel ball (2)
On, also, the left end of the current limliting valve body (4) is tapered, and the left part of the flow-limiting valve front housing has and the current limliting valve body
(4) matched tapered indentations form throttling crack between the left end and the flow-limiting valve front housing of the current limliting valve body (4), described
It is provided with pouring orifice on the left of the left part of flow-limiting valve front housing (1), the throttling crack, on the side wall of the flow-limiting valve front housing (1),
The right side of the throttling crack, is provided with buffering hydraulic fluid port.
2. fluid pressure buffer unit according to claim 1, which is characterized in that the limit of the fluid pressure buffer unit
Stream valve front housing (1) is fixedly connected with the target device buffered is needed, wherein oil inlet and the mesh on the left of flow-limiting valve front housing (1)
The pouring orifice of marking device connects, and the buffering hydraulic fluid port of flow-limiting valve front housing (1) side wall is connect with the oil return opening of the target device.
3. fluid pressure buffer unit according to claim 1, which is characterized in that the cone-shaped valve head of the current limliting valve body with
Gap between flow-limiting valve front housing is adjustable between 2-25mm.
4. fluid pressure buffer unit according to claim 1, which is characterized in that the left end of the current limliting valve body (4)
On conical section outer surface, be provided with laterally, spaced apart incised groove, groove extends perpendicularly to hydraulic oil
Flow direction.
5. fluid pressure buffer unit according to claim 1, which is characterized in that further include fixing piece (5) for fixing
The current limliting valve body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821717954.4U CN209324918U (en) | 2018-10-23 | 2018-10-23 | A kind of fluid pressure buffer unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821717954.4U CN209324918U (en) | 2018-10-23 | 2018-10-23 | A kind of fluid pressure buffer unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209324918U true CN209324918U (en) | 2019-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821717954.4U Active CN209324918U (en) | 2018-10-23 | 2018-10-23 | A kind of fluid pressure buffer unit |
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| CN (1) | CN209324918U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111010968A (en) * | 2019-12-29 | 2020-04-17 | 泗洪仁益自来水有限公司 | Multi-angle sprinkling irrigation device for water conservancy and sprinkling irrigation method thereof |
| CN111852866A (en) * | 2019-10-31 | 2020-10-30 | 奉化意格特机械制造有限公司 | High-pressure inverse proportion valve for air compressor |
-
2018
- 2018-10-23 CN CN201821717954.4U patent/CN209324918U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852866A (en) * | 2019-10-31 | 2020-10-30 | 奉化意格特机械制造有限公司 | High-pressure inverse proportion valve for air compressor |
| CN111010968A (en) * | 2019-12-29 | 2020-04-17 | 泗洪仁益自来水有限公司 | Multi-angle sprinkling irrigation device for water conservancy and sprinkling irrigation method thereof |
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