CN208057557U - A kind of prefill valve of extruder - Google Patents
A kind of prefill valve of extruder Download PDFInfo
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- CN208057557U CN208057557U CN201820254323.7U CN201820254323U CN208057557U CN 208057557 U CN208057557 U CN 208057557U CN 201820254323 U CN201820254323 U CN 201820254323U CN 208057557 U CN208057557 U CN 208057557U
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- extruder
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Abstract
The utility model provides a kind of prefill valve of extruder, is related to prefill valve technical field, including valve body, valve rod, foreboard and valve seat.Foreboard and valve seat, which symmetrically cover, to be arranged in the valve body two-port of three-way pipe structure；The valve rod for being supported on valve inner is connected to cone core, is driven and moves left and right by the movement of limit plunger and buffer stopper that its tail portion covers admittedly, to open and close prefill valve, meets the quick filling liquid between extruder master cylinder and fuel tank and fluid reflux.The movement of limit plunger and buffer stopper is realizing into drain by push rod oil cylinder difference hydraulic fluid port.The prefill valve of the utility model can solve traditional prefill valve and the failure problems that can not be closed easily occurs, and realize the quick backflow of the fluid of extruder master cylinder to the fuel tank process of extruder.
Description
Technical field
The utility model is related to a kind of prefill valve field more particularly to a kind of prefill valves of extruder.
Background technology
At present normally only prefill valve is realized by spring reset applied to the control oil piping system of the prefill valve of extruder
It closes, separates the connection of fuel tank and master cylinder, but there are spring aging, deformation failures etc., and spool mechanism gravity etc. can not be overcome to lead
The case where cause prefill valve can not close or reciprocal process is stuck, and spring is in inside equipment, and dismounting, repair are relatively more tired
Difficulty, and prefill valve only is closed by spring reset, it cannot be satisfied the functional requirement that extruder is quickly run.
Utility model content
The purpose of this utility model is to provide a kind of prefill valves of extruder, nothing easily occur to solve traditional prefill valve
The failure problems that method is closed.
To solve the above problems, the utility model provides a kind of prefill valve of extruder, including it is valve body, valve rod, preceding
Plate and valve seat；The valve body is three-way pipe；The foreboard and the valve seat, which symmetrically cover, to be arranged in the valve body symmetrical two
On port；Support guide seat is equipped in the centre bore of the foreboard, the valve rod is by the valve seat and the support guide seat branch
Support is in the symmetrical two-port of the valve body on same center line and inside it；The center of the foreboard opens up a stepped hole,
Outside is matched with sealing ring, and the Single port of the sealing ring is bulge-structure, is matched with the stepped hole of the foreboard；It is described close
The both sides port of seal ring annular distance is in flaring type, and the annular distance and the foreboard centre bore and the valve body port are isometrical；It is described
Cone core is matched with outside the another port of sealing ring, the end face that the cone core is contacted with the sealing ring is wedge shaped, and can with it is described
The port of sealing ring annular distance is mutually agreed with, and the center of the cone core is equipped with perforative valve rod hole, and the valve rod hole is from the cone core
Centre is gradually extended out to one end far from the sealing ring, the head phase of the size shape of the valve rod hole and the valve rod
Match, the cone core is sleeved on the head of the valve rod by the valve rod hole, and the external end face of side that extends out of its valve rod hole with
The head end of the valve rod maintains an equal level, and the other side is furnished with cone core nut, and the cone core nut is sleeved on the cone on the valve rod
The head of core and the valve rod is fixed；Push rod oil cylinder is arranged in side of the valve seat far from the valve body port, described to push away
It is being installed with pedestal close to one end of the valve seat in rod oil cylinder, the pedestal with the valve rod gauge diameter by matching
Centre bore is sleeved on the valve rod；It is equipped with limit plunger and buffer stopper in the cavity of the push rod oil cylinder, the limit plunger and described
Buffer stopper center offers the hole consistent with the valve rod tail diameter, and is arranged by described hole and is fixed on the valve
Bar tail portion；The outer diameter of the limit plunger is bigger than the internal diameter of the pedestal；The limit plunger and the buffer stopper are oily by the push rod
Cylinder is divided into rod chamber and rodless cavity, and rod chamber opens up retrogressing hydraulic fluid port, and rodless cavity opens up propulsion hydraulic fluid port, and the retrogressing hydraulic fluid port setting exists
Between the pedestal and the limit plunger, the end face center for promoting valve rod tail portion described in hydraulic fluid port face.
Further, there is the valve body first port, second port and third port, the first port connection to squeeze
The fuel tank of machine, the master cylinder of the second port connection extruder, the third port are connected to the push rod oil cylinder.
Further, the foreboard by flanged joint in the second port of the valve body；The valve seat is welded on institute
It states in valve body third port, center offers the hole to match with the gauge diameter of the valve rod.
Further, the head of the valve rod stretches to the valve rod hole of the cone core from the second port,
The bar portion can the support guide seat, the valve seat, the pedestal centre bore in relatively move, the end of the tail portion
For bottle cap shape, outer diameter is bigger than the buffer stopper outer diameter.
Further, the push rod oil cylinder is fixed on by flanged joint on the valve seat, the side far from the valve seat
Port sets that there are one the groove types mutually agreed with the end of the valve rod tail portion, and is covered with cylinder cap outside, and the cylinder cap is logical
Flanged joint is crossed on the push rod oil cylinder.
Compared with prior art, the utility model has the advantages that：
1. the utility model provides a kind of prefill valve of extruder, the prefill valve is three-way pipe, connection extruder master
One end of oil cylinder is equipped with foreboard, sealing ring and cone core successively, and three's contact surface matching degree is high, ensure that good leakproofness.
2. the prefill valve is equipped with push rod oil cylinder, by control different hydraulic fluid ports in push rod oil cylinder into drain, push limit
The side-to-side movement of plug, and then the stem movement of connection is pushed, to open and close prefill valve.When push rod oil cylinder propulsion hydraulic fluid port rapidly into
When liquid, valve rod can be pushed quickly to travel forward, to open the contact surface of cone core and sealing ring, realize extruder master cylinder oil
Liquid can quick backflow to extruder fuel tank.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Reference sign：
1- valve bodies；1a- first ports；1b- second ports；1c- third ports；2- valve rods；3- foreboards；
4- sealing rings；5- cone cores；6- cone core nuts；7- support guide seats；8- valve seats；9- pedestals；
10- limit plungers；11- buffer stoppers；12- push rod oil cylinders；12a- retreats hydraulic fluid port；12b- promotes hydraulic fluid port.
Specific implementation mode
Embodying the exemplary embodiments of the utility model features and advantages will describe in detail in the following description.It should be understood that
Various variations can be had in different embodiments by being the utility model, all not depart from the scope of the utility model, and
The descriptions and illustrations are essentially for illustration purposes, rather than to limit the utility model.
Wherein, attached drawing and " preceding " " rear " of specification word part are only used for that one kind of the utility model is described with reference to the drawings
The structure of the prefill valve of extruder, not to the restriction of the utility model.
As shown in Figure 1, a kind of prefill valve of extruder of the utility model, including valve body 1, valve rod 2, foreboard 3 and valve
Seat 8；The valve body 1 is three-way pipe；The foreboard 3 and the valve seat 8, which symmetrically cover, to be arranged at 1 symmetrical both ends of the valve body
On mouth；Support guide seat 7 is equipped in the centre bore of the foreboard 3, the valve rod 2 is by the valve seat 8 and the support guide seat 7
It is supported in 1 symmetrical two-port of the valve body on same center line and inside it；The center of the foreboard 3 opens up a ladder
Hole, outside are matched with sealing ring 4, and the Single port of the sealing ring 4 is bulge-structure, is matched with the stepped hole of the foreboard 3,
Junction is equipped with sealing ring between the two；The both sides port of 4 annular distance of the sealing ring be in flaring type, the annular distance with it is described before
3 centre bore of plate and 1 port of the valve body are isometrical；Cone core 5, the cone core 5 and institute are matched with outside the another port of the sealing ring 4
The end face for stating the contact of sealing ring 4 is wedge shaped, and can mutually agree with the port of 4 annular distance of the sealing ring, and the center of the cone core 5 is set
There are perforative valve rod hole, the valve rod hole gradually to be extended out from the centre of the cone core 5 to one end far from the sealing ring 4, institute
The size shape and the head of the valve rod 2 for stating valve rod hole match, and the cone core 5 is sleeved on the valve rod by the valve rod hole
2 head, and the external end face of side that its valve rod hole extends out maintains an equal level with the head end of the valve rod 2, the other side is equipped with cone
Core nut 6, the cone core nut 6 are sleeved on the valve rod 2 and are fixed the cone core 5 and the head of the valve rod 2；It is described
Side setting push rod oil cylinder 12 of the valve seat 8 far from 1 port of the valve body, the push rod oil cylinder 12 is interior close to the valve seat 8
One end is installed with pedestal 9, and the pedestal 9 is sleeved on the valve rod 2 by the centre bore to match with 2 gauge diameter of the valve rod
On；Limit plunger 10 and buffer stopper 11 are equipped in the cavity of the push rod oil cylinder 12, in the limit plunger 10 and the buffer stopper 11
The heart offers the hole consistent with the valve rod tail diameter, and is arranged by described hole and is fixed on the valve rod tail portion；
The shaft shoulder of the valve rod and the buffer stopper ensure that not moving for the limit plunger position, the outer diameter of the limit plunger 10 compare institute
The internal diameter for stating pedestal 9 is big；The limit plunger 10 and the buffer stopper 11 divide the push rod oil cylinder 12 for rod chamber and rodless cavity,
Rod chamber, which opens up, retreats hydraulic fluid port 12a, and rodless cavity, which opens up, promotes hydraulic fluid port 12b, and the retrogressing hydraulic fluid port 12a settings are in 9 He of the pedestal
Between the limit plunger 10, the end face center for promoting 2 tail portion of valve rod described in hydraulic fluid port 12b faces.The push rod is in-oil cylinder
The contact face of pedestal and limit plunger is wedge shaped, this structure is convenient to push limit plunger fortune from the fluid that retrogressing hydraulic fluid port is come in
It is dynamic.The outer diameter of the limit plunger is consistent with the internal diameter of push rod oil cylinder, and guarantee limit plunger is close with push rod oil cylinder contact surface
Feng Xing ensures not being connected to mutually for the fluid between the rod chamber and the rodless cavity.
There is the valve body 1 first port 1a, second port 1b and third port 1c, the first port 1a connections to squeeze
The fuel tank of machine, the master cylinder of the second port 1b connections extruder, the third port 1c are connected to the push rod oil cylinder 12.Institute
State the automatic control loop for being connected on push rod oil cylinder and controlling its hydraulic fluid port into drain, when extruder is in backward travel, equipment
A signal can be transmitted to control loop, control loop can control opening and promote hydraulic fluid port 12b, and fluid is made quickly to get into the push rod
The rodless cavity of oil cylinder, pushes the limit plunger to travel forward, and to drive the valve rod of connection to travel forward, opening is filled
Liquid valve allows the master cylinder of extruder to be connected to fuel tank, and the oil of master cylinder is quickly returning to fuel tank and goes.When needing to close prefill valve,
Control loop can control opening and promote hydraulic fluid port 12a, and fluid is made quickly to get into the rod chamber of the push rod oil cylinder, described in promotion
Limit plunger moves backward, to drive the valve rod of connection to move backward, closes prefill valve, completely cut off the master cylinder of extruder with
Fuel tank.
The foreboard 3 on the second port 1b of the valve body 1, retains through-hole by flanged joint on periphery, so as to
It is connect with other component；The valve seat 8 is welded on 1 third port 1c of the valve body, and center offers the bar with the valve rod 2
The hole that portion's diameter matches.
The head of the valve rod 2 stretches to the valve rod hole of the cone core 5 from the second port 1b；The bar
Portion can the support guide seat 7, the valve seat 8, the pedestal 9 centre bore in relatively move；The tail portion is from described
Three port 1c are stretched into inside the push rod oil cylinder, before extending through the limit plunger and the buffer stopper to the propulsion hydraulic fluid port.
The end of the tail portion is bottle cap shape, and outer diameter is bigger than the buffer stopper outer diameter.
The push rod oil cylinder 12 is fixed on by flanged joint on the valve seat 8, internal close to the port of the valve seat 8
It is welded with the pedestal 9, another side ports are equipped with a groove type mutually agreed with the end of the valve rod tail portion, and outside
It is covered with cylinder cap, for the cylinder cap by flanged joint on the push rod oil cylinder, center opening forms the propulsion hydraulic fluid port
12b。
A kind of prefill valve of extruder of the utility model, valve body are three-way pipe, one end in symmetrical two-port according to
Secondary to be equipped with foreboard, sealing ring and cone core, three's structure matches, and forms good sealing surface；The other end connects push rod oil cylinder, pushes away
Hydraulic fluid port is opened up on rod oil cylinder, by the different hydraulic fluid ports of control into drain, pushes the side-to-side movement of limit plunger, and then push connection
The liquid sucking-discharging between fuel tank and master cylinder is better achieved to open and close prefill valve in stem movement, convenient for extruder master cylinder oil
Liquid quick backflow is to the fuel tank of extruder, and good airproof performance is fast and reliable, reasonable for structure, especially suitable for extruder.
It should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although
The utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
So can be with technical scheme described in the above embodiments is modified, or which part technical characteristic is equally replaced
It changes；And these modifications or replacements, various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
Protection domain.
Claims (5)
1. a kind of prefill valve of extruder, it is characterised in that：Including valve body (1), valve rod (2), foreboard (3) and valve seat (8)；Institute
It is three-way pipe to state valve body (1)；The foreboard (3) and the valve seat (8), which symmetrically cover, to be arranged in the valve body (1) symmetrical two
On port；It is equipped with support guide seat (7) in the centre bore of the foreboard (3), the valve rod (2) is by the valve seat (8) and described
Support guide seat (7) is supported in the symmetrical two-port of the valve body (1) on same center line and inside it；The foreboard
(3) center opens up a stepped hole, and outside is matched with sealing ring (4), and the Single port of the sealing ring (4) is bulge-structure, with
The stepped hole of the foreboard (3) matches；The both sides port of sealing ring (4) annular distance is in flaring type, the annular distance and institute
It states foreboard (3) centre bore and the valve body (1) port is isometrical；It is matched with cone core (5) outside the another port of the sealing ring (4),
The end face that the cone core (5) contacts with the sealing ring (4) is wedge shaped, and can be with the port phase contract of the sealing ring (4) annular distance
It closes, the center of the cone core (5) is equipped with perforative valve rod hole, and the valve rod hole is from the centre of the cone core (5) to far from described
One end of sealing ring (4) gradually extends out, and the size shape of the valve rod hole and the head of the valve rod (2) match, the cone
Core (5) is sleeved on the head of the valve rod (2) by the valve rod hole, and the external end face of side that extends out of its valve rod hole with it is described
The head end of valve rod (2) maintains an equal level, and the other side is furnished with cone core nut (6), and the cone core nut (6) is sleeved on the valve rod (2)
The cone core (5) and the head of the valve rod (2) are fixed；Side of the valve seat (8) far from the valve body (1) port
Push rod oil cylinder (12) is set, and the interior one end close to the valve seat (8) of the push rod oil cylinder (12) is installed with pedestal (9), described
Pedestal (9) is sleeved on by the centre bore to match with the valve rod (2) gauge diameter on the valve rod (2)；The push rod oil cylinder
(12) limit plunger (10) and buffer stopper (11) are equipped in cavity, the limit plunger (10) and the buffer stopper (11) center open up
There is the hole consistent with the valve rod tail diameter, and is arranged by described hole and is fixed on the valve rod tail portion；The limit
The outer diameter of position plug (10) is bigger than the internal diameter of the pedestal (9)；The limit plunger (10) and the buffer stopper (11) are by the push rod
Oil cylinder (12) is divided into rod chamber and rodless cavity, and rod chamber, which opens up, retreats hydraulic fluid port (12a), and rodless cavity, which opens up, promotes hydraulic fluid port (12b), institute
It states and retreats hydraulic fluid port (12a) setting between the pedestal (9) and the limit plunger (10), propulsion hydraulic fluid port (12b) face institute
State the end face center of valve rod (2) tail portion.
2. a kind of prefill valve of extruder according to claim 1, it is characterised in that：The valve body (1) has first
Port (1a), second port (1b) and third port (1c), the fuel tank of first port (1a) the connection extruder, described second
Port (1b) is connected to the master cylinder of extruder, and the third port (1c) is connected to the push rod oil cylinder (12).
3. a kind of prefill valve of extruder according to claim 2, it is characterised in that：The foreboard (3) passes through flange
It is connected in the second port (1b) of the valve body (1)；The valve seat (8) is welded in the valve body (1) third port (1c),
Center offers the hole to match with the gauge diameter of the valve rod (2).
4. a kind of prefill valve of extruder according to claim 2, it is characterised in that：The head of the valve rod (2)
Portion stretches to the valve rod hole of the cone core (5) from the second port (1b), and the bar portion can be in the support guide seat
(7), the valve seat (8), the pedestal (9) centre bore in relatively move, the end of the tail portion is bottle cap shape, and outer diameter compares institute
It is big to state buffer stopper outer diameter.
5. a kind of prefill valve of extruder according to claim 1, it is characterised in that：The push rod oil cylinder (12) passes through
Flanged joint is fixed on the valve seat (8), and the side ports far from the valve seat (8) are equipped with one and the valve rod tail portion
The groove type that end is mutually agreed with, and it is covered with cylinder cap outside, the cylinder cap is by flanged joint on the push rod oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254323.7U CN208057557U (en) | 2018-02-12 | 2018-02-12 | A kind of prefill valve of extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820254323.7U CN208057557U (en) | 2018-02-12 | 2018-02-12 | A kind of prefill valve of extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208057557U true CN208057557U (en) | 2018-11-06 |
Family
ID=63990484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820254323.7U Active CN208057557U (en) | 2018-02-12 | 2018-02-12 | A kind of prefill valve of extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208057557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116972045A (en) * | 2023-09-21 | 2023-10-31 | 苏州旭展液压科技有限公司 | Portable detachable hydraulic filling valve |
-
2018
- 2018-02-12 CN CN201820254323.7U patent/CN208057557U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116972045A (en) * | 2023-09-21 | 2023-10-31 | 苏州旭展液压科技有限公司 | Portable detachable hydraulic filling valve |
| CN116972045B (en) * | 2023-09-21 | 2024-04-02 | 苏州旭展液压科技有限公司 | Portable detachable hydraulic filling valve |
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