CN201568390U

CN201568390U - Electric-control stop valve

Info

Publication number: CN201568390U
Application number: CN2009202801013U
Authority: CN
Inventors: 朱宝京
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-01
Filing date: 2009-12-01
Publication date: 2010-09-01
Anticipated expiration: 2019-12-01

Abstract

The utility model discloses an electric-control stop valve belonging to a stop valve and comprising an electromagnet middle sleeve, an electromagnet coil, a valve body, a valve sleeve and a valve core, wherein an electromagnet push rod is arranged in the electromagnet middle sleeve, the valve body is arranged at the left side of the electromagnet coil, threads at the right side of a main hole of the valve body are connected with the electromagnet middle sleeve, a lower oil port and an upper oil port are arranged on the valve body, the left side of the main hole of the valve body is provided with the valve sleeve pressed and fixed by a threaded press cover at the right side of the valve sleeve, the right side of the threaded press cover is provided with the electromagnet middle sleeve, a hole path is arranged on the side wall of the valve sleeve in which the valve core is arranged, the right side of the valve core is connected with a connecting rod through the threads, a spring cavity and a first oil path are arranged in the valve core, a third oil path is arranged on the side wall, a second oil path is arranged between the outer side of the third oil path and the valve sleeve, and a return spring is arranged in the spring cavity. The electric-control stop valve has the characteristics of simplification of the connection of hydraulic system pipelines, good pressure maintaining effect, optimization of system design, reduction of installing cost and application cost and the like.

Description

Automatically controlled stop valve

Technical field

The utility model relates to a kind of stop valve, especially a kind of automatically controlled stop valve.

Background technique

In one-way cylinder lifting equipment, for the rising that realizes oil cylinder, descend, stop, pressurize, method commonly used is that the method for selecting for use the 3-position-3-way solenoid directional control valve to add the hydraulic control one-way valve realizes, this method not only the cost height, use the quantity of valve many, leakage point is many but also also necessary unlatching oil hydraulic pump in the oil cylinder backhaul, especially in a hydraulic power unit drives the system of a plurality of one-way cylinders, pipeline connects more variously, give and install, use and keep in repair and bring great inconvenience.

The model utility content

Technical assignment of the present utility model is a kind of automatically controlled stop valve that provides at above-mentioned deficiency of the prior art, this automatically controlled stop valve has the hydraulic system pipeline of simplification and connects, pressurize is effective, and optimization system design reduces characteristics such as installation cost and user cost.

The technological scheme that its technical problem that solves the utility model adopts is: it comprises in the electromagnet overlaps, electromagnet coil, valve body, valve pocket and spool, have in the cover in the electromagnet can move left and right electromagnet push-rod, valve body is in the left side of electromagnet coil, overlap in valve body main aperture right side screw thread and the electromagnet and be connected, valve body is provided with down hydraulic fluid port and last hydraulic fluid port, valve pocket is equipped with in valve body main aperture left side, valve pocket is compressed and is fixed by the union (screwed)bonnet (UB on its right side, the right side of union (screwed)bonnet (UB is to overlap in the electromagnet, sleeve side wall is provided with the duct that is connected with last hydraulic fluid port, spool is housed in the valve pocket, the spool right side extension bar that has been threaded, extension bar is corresponding with electromagnet push-rod, valve core inside is provided with the spring chamber and first oil duct that is connected, sidewall is provided with the 3rd oil duct that is connected with first oil duct, between the 3rd oil duct outside and the valve pocket is second oil duct, described spring chamber, first oil duct, the 3rd oil duct and second oil duct communicate with following hydraulic fluid port by the hole on the union (screwed)bonnet (UB circumference, and Returnning spring is housed in spring chamber.

Be provided with back-up ring and O-ring seals between described valve pocket and the valve body, be provided with O-ring seals between valve pocket and the spool, be provided with O-ring seals between cover and the valve body in the electromagnet.

Described spool right side is that wedge angle closely contacts and seals with the inner conical surface of valve pocket.

Automatically controlled stop valve of the present utility model is compared with prior art, has following outstanding beneficial effect: simple in structure, can realize multi-purpose valve, easy to install, do not have and leak, simplify hydraulic system pipeline and connect, pressurize is effective, optimization system design reduces characteristics such as installation cost and user cost.

Description of drawings

Accompanying drawing 1 is the structural representation of automatically controlled stop valve;

Description of reference numerals: 1, Returnning spring, 2, valve body, 3, valve pocket, 4, spool, 5, extension bar, 6, union (screwed)bonnet (UB, 7, overlap 8, electromagnet push-rod, 9, electromagnet coil in the electromagnet, 10, back-up ring, 11, O-ring seals, 12, go up hydraulic fluid port, 13, following hydraulic fluid port, 14, spring chamber, 15, first oil duct, 16, the 3rd oil duct, 17, second oil duct.

Embodiment

With reference to explaining below 1 pair of automatically controlled stop valve work of the present utility model of Figure of description.

Automatically controlled stop valve of the present utility model, its structure comprises overlaps 7 in the electromagnet, electromagnet coil 9, valve body 2, valve pocket 3 and spool 4, in the cover 7 the transportable electromagnet push-rod 8 in the left and right sides is arranged in the electromagnet, valve body 2 is arranged on the left side of electromagnet coil 9, valve body 2 main aperture right sides are threaded with cover 7 in the electromagnet, valve body 2 is provided with down hydraulic fluid port 13 and last hydraulic fluid port 12, valve pocket 3 is equipped with in valve body 2 main apertures left side, valve pocket 3 compresses and fixes by the union (screwed)bonnet (UB 6 of its left end, the right side of union (screwed)bonnet (UB 6 is to overlap 7 in the electromagnet, valve pocket 3 sidewalls are provided with the duct that is connected with last hydraulic fluid port 12, spool 4 is housed in the valve pocket 3, spool 4 is connected with extension bar 5 by the right side screw thread, extension bar 5 is corresponding with electromagnet push-rod 8, spool 4 inside are provided with the spring chamber 14 and first oil duct 15 that is connected, sidewall is provided with the 3rd oil duct 16 that is connected with first oil duct 15, it between the 3rd oil duct 16 outsides and the valve pocket 3 second oil duct 17, described spring chamber 14, first oil duct 15, the 3rd oil duct 16 and second oil duct 17 communicate with following hydraulic fluid port 13 by the hole on union (screwed)bonnet (UB 6 circumference, and Returnning spring 1 is housed in spring chamber 14.

Be provided with back-up ring 10 and O-ring seals 11 between described valve pocket 3 and the valve body 2, be provided with O-ring seals 11 between valve pocket 3 and the spool 4, be provided with O-ring seals 11 between cover 7 and the valve body 2 in the electromagnet.

Described spool 4 right sides are that wedge angle closely contacts and seals with the inner conical surface of valve pocket 3.

Spring chamber 14, first oil duct 15, the 3rd oil duct 16, second oil duct 17 communicate with following hydraulic fluid port 13 by the hole on union (screwed)bonnet (UB 6 circumference, that is to say that the lifting surface area in any operating mode lower valve core 4 left and right sides all equates with oil pressure, different is the pre-pressing force that spool 4 left ends have increased Returnning spring 1.When electromagnet is switched on, electromagnet push-rod 8 promotes extension bar 5 and moves to left, extension bar 5 drives spool 4 and moves together left, the wedge angle on spool 4 right sides and the inner conical surface of valve pocket 3 are separated from, following hydraulic fluid port 13 communicates with last hydraulic fluid port 12, only need overcome the active force of Returnning spring 1 and the frictional force between spool 4 and the valve pocket 3 this moment.

Automatically controlled stop valve of the present utility model, the maximum pressure-bearing of last hydraulic fluid port can be used so the automatically controlled stop valve of this bi-bit bi-pass normal close type also can be used as the 70Mpa extra-high pressure unloading valve to 70Mpa.

Except that the described technical characteristics of specification, be the known technology of those skilled in the art.

Claims

1. automatically controlled stop valve, comprise in the electromagnet and overlapping, electromagnet coil, valve body, valve pocket and spool, be provided with electromagnet push-rod in the cover in the electromagnet, it is characterized in that: valve body is in the left side of electromagnet coil, overlap in valve body main aperture right side screw thread and the electromagnet and be connected, valve body is provided with down hydraulic fluid port and last hydraulic fluid port, valve pocket is equipped with in valve body main aperture left side, valve pocket is compressed and is fixed by the union (screwed)bonnet (UB on its right side, the right side of union (screwed)bonnet (UB is to overlap in the electromagnet, sleeve side wall is provided with the duct that is connected with last hydraulic fluid port, spool is housed in the valve pocket, spool right side and extension bar are by being threaded, and extension bar is corresponding with electromagnet push-rod, and valve core inside is provided with the spring chamber and first oil duct that is connected, sidewall is provided with the 3rd oil duct that is connected with first oil duct, between the 3rd oil duct outside and the valve pocket is second oil duct, described spring chamber, first oil duct, the 3rd oil duct and second oil duct communicate with following hydraulic fluid port by the hole on the union (screwed)bonnet (UB circumference, and Returnning spring is housed in spring chamber.

2. automatically controlled stop valve according to claim 1 is characterized in that: be provided with back-up ring and O-ring seals between described valve pocket and the valve body, be provided with O-ring seals between valve pocket and the spool, be provided with O-ring seals between cover and the valve body in the electromagnet.

3. automatically controlled stop valve according to claim 1 is characterized in that: described spool right side is that wedge angle closely contacts and seals with the inner conical surface of valve pocket.