CN2491658Y

CN2491658Y - Hydraulic controlled valve

Info

Publication number: CN2491658Y
Application number: CN 01231252
Authority: CN
Inventors: 张骥
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-07-10
Filing date: 2001-07-10
Publication date: 2002-05-15
Anticipated expiration: 2011-07-10

Abstract

Provided is a water power control valve. The utility model comprises a front valve body, a rear valve body and a free body, the front body and the rear body are all fixed on the outer edges of two end faces of the free body, the end faces of the free body are covered with a front aperture and a rear aperture. Two spaces communicated with liquid medium flowed in the valve are formed between the front aperture and a front cover, and the rear aperture and the free body. Two sealing cavities are connected with a control tube line between the rear aperture and a rear cover, and the front aperture and the free body. A pair of clamp plates of the front aperture and a pair of clamp plates of the rear aperture are employed to fixedly connect the front aperture and the rear aperture to a slide-bar shaft. One end of the slide-bar shaft which is towards a water inlet of the valve is equipped with a sealing panel which is engaged with a valve base fixed on the front valve body. The sum of areas of the pressure borne by the front aperture and the rear aperture in the sealing cavity is larger than the area of one end of the sealing panel which is towards the water inlet of the valve. The purpose of design of the utility model is to provide a water-power control valve with the advantages of small volume, large flow quantity, light weight, low draught loss, strong vapor-eroding resistance, and capability of ensuring stable flowing of the liquid medium.

Description

Hydraulic control valve

Technical field

The utility model relates to a kind of hydraulic control valve.

Background technique

Hydraulic control valve is a kind of pressure that utilizes the liquid medium that transmits in the pipeline, realizes valve opening, closes or regulate and control the valve of aperture size by means of hydraulic control valve inner septum driving mechanism.Existing hydraulic control valve is to utilize single barrier film driving mechanism, and along the Vertical direction of main valve liquid inlet and outlet axis, hydraulic control valve is opened or closed to the pressure that acts on barrier film by change.Owing to be to utilize to act on uniseptate pressure, cause required single diaphragm area bigger, correspondingly make the hydraulic control valve volume bigger, hydraulic control valve is opened or closed to Vertical direction along main valve liquid inlet and outlet axis, it is bigger to cause flowing medium in the pipeline to be the variation of turbulent flow and flow velocity, therefore and area of passage is little, causes serious cavitation erosion in the valve body, flow is little, the pressure loss is big, and is easy to cause the high vibration of pipe-line system.

The model utility content

The purpose of this utility model provides the hydraulic control valve that a kind of pressure loss is low, the anti-cavitation ability strong, liquid medium is steadily flow through.

For achieving the above object, the utility model provides a kind of hydraulic control valve, it comprises valve body and spool, described valve body comprises front valve shell, rear valve body, slider, preceding barrier film, metacneme, protecgulum, bonnet, described front valve shell and described rear valve body are fixed on the outer of two end faces of described slider, barrier film and metacneme before the end face of described slider is coated with, barrier film utilizes protecgulum to be fixed on the described slider before described, described metacneme utilizes bonnet to be fixed on the described slider, the space that the liquid medium that flows through in two of formations and the valve body between barrier film and protecgulum and metacneme and the slider before described communicates, constitute two Seal cages that are connected with pilot line between described metacneme and bonnet and preceding barrier film and the slider, described spool comprises sliding pole axis, barrier film clamping plate before a pair of, a pair of metacneme clamping plate, barrier film utilizes a pair of preceding barrier film clamping plate to fixedly connected with described sliding pole axis with a pair of metacneme clamping plate with described metacneme before described, described sliding pole axis is equipped with Returnning spring towards valve body liquid outlet one end, described Returnning spring one end withstands on the bonnet, the other end withstands on the end face of metacneme clamping plate, described sliding pole axis is mounted with seal disc towards valve body liquid entering hole one end, described seal disc matches with valve seat on being fixed on front valve shell, described before barrier film and described metacneme in Seal cage, bear the area of passage of the area sum of pressure greater than described front valve shell liquid entering hole.

As improvement of the present utility model, described before barrier film and the described metacneme area sum of in Seal cage, bearing pressure be 2.8～4.8 times of area of passage of described front valve shell liquid entering hole.

As further improvement of the utility model, described before barrier film clamping plate and the described metacneme clamping plate area sum of in Seal cage, bearing pressure be 1.1～3.8 times of area of passage of described front valve shell liquid entering hole.

Further improve as of the present utility model, described seal disc adopts seal disc pressing plate, axle sleeve and nut to be fixed on the described sliding pole axis.

Further improve again as of the present utility model, described preceding barrier film and metacneme adopt nylon to strengthen Neoprene, Dingqing's rubber or elastic metallic material and make.

Further improve in addition as of the present utility model, described front valve shell, rear valve body, slider, protecgulum, bonnet, preceding barrier film clamping plate, metacneme clamping plate, nut, sliding pole axis, valve seat, axle sleeve adopt stainless steel material or Cu alloy material to make.

Also further improve as of the present utility model, described valve seat employing is threaded or screw is fastened on the described front valve shell.

Further improve as of the present utility model, described protecgulum and described bonnet adopt bolt to be fastened on the described slider again.

More one further improve as of the present utility model, described metacneme clamping plate adopt nut to be fixed on the described sliding pole axis.

Also one further improve as of the present utility model, described front valve shell and described rear valve body adopt stud bolt to be fixed on the outer of two end faces of described slider.

Hydraulic control valve of the present utility model, the liquid inlet and outlet of valve body is on the same axis, the variation of passing the moving direction of flowing medium of valve body and flow velocity is less, owing to be the pressure that utilizes two barrier films, required diaphragm area is less, correspondingly make the hydraulic control valve volume less, volume is little, flow is big so hydraulic control valve of the present utility model has, in light weight, the pressure loss is low, the anti-cavitation ability is strong, characteristics that liquid medium is steadily flow through.

Below in conjunction with accompanying drawing hydraulic control valve of the present utility model is described in further detail.

Description of drawings

Fig. 1 is the main pseudosection of the structural representation of hydraulic control valve of the present utility model.

Embodiment

As seen from Figure 1, hydraulic control valve of the present utility model, comprise pilot line 11, control ring 18, control ring 19 and drain plug 20, it also comprises front valve shell 1, rear valve body 2 and slider 3, front valve shell 1 and rear valve body 2 are fixed on the outer of 3 two end faces of slider and form the shell of valve body, utilize Sealing to seal between front valve shell 1, rear valve body 2 and the slider 3.Slider 3 in valve housing before the end face of valve body liquid entering hole and valve body liquid outlet is coated with barrier film 4 and metacneme 5, preceding barrier film 4 utilizes a pair of preceding barrier film clamping plate 6 to be connected with sliding pole axis 7, metacneme 5 utilizes a pair of metacneme clamping plate 8 to be connected with sliding pole axis 7, preceding barrier film 4 utilizes protecgulum 9 to be fixed on the slider 3, metacneme 5 utilizes bonnet 10 to be fixed on the slider 3, before the space that communicates of the liquid medium that flows through in two of formations and the valve body between barrier film 4 and protecgulum 9 and metacneme 5 and the slider 3, constitute two Seal cages that communicate with pilot line 11 between metacneme 5 and bonnet 10 and preceding barrier film 4 and the slider 3, sliding pole axis 7 is equipped with Returnning spring 12 towards valve body liquid outlet one end, Returnning spring 12 1 ends withstand on the bonnet 10, the other end withstands on the end face of metacneme clamping plate 8, metacneme clamping plate 8 utilize nut 16 to be fixed on the sliding pole axis 7, sliding pole axis 7 is mounted with seal disc 13 towards valve body liquid entering hole one end, and seal disc 13 matches with valve seat 15 on being fixed on front valve shell 1.

Hydraulic control valve of the present utility model, the liquid entering hole of pilot line 11 is out in the higher hydraulic control valve inlet of pressure, the mistake flow diameter of the control ring 18 on the pilot line 11 is less, the mistake flow diameter of control ring 19 is then relatively large, control ring 18 on pilot line 11 is in opening state, when control ring 19 also is in opening state, flow to the liquid that constitutes two Seal cages that communicate with pilot line 11 between metacneme 5 and bonnet 10 and preceding barrier film 4 and the slider 3 by control ring 18, be less than the liquid that flows out two Seal cages that communicate with pilot line 11 of formation between metacnemes 5 and bonnet 10 and preceding barrier film 4 and the slider 3 by control ring 19, cause the pressure of pressure in hydraulic control valve inlet or the hydraulic control valve in the Seal cage, liquid entering hole pressure between the effect of seal disc 13 and preceding barrier film 4 and protecgulum 9 and metacneme 5 and the slider 3 two with valve body in flow through liquid medium and communicate in the space under liquid medium (direction as shown by arrows) the pressure effect, preceding barrier film 4 and metacneme 5 will overcome the effect of liquid medium in Returnning spring 12 and the Seal cage (direction as shown by arrows) pressure, drive is equipped with sliding pole axis 7 motions of seal disc 13, seal disc 13 is broken away from valve seat 15 to be cooperated, the hydraulic control valve import is opened, make hydraulic control valve be in the full open state.

Control ring 18 on pilot line 11 is in opening state, when control ring 19 is in closed condition, because the liquid entering hole of pilot line 11 is out in the higher hydraulic control valve inlet of pressure, make the pressure that constitutes two Seal cages that communicate with pilot line 11 between metacneme 5 and bonnet 10 and preceding barrier film 4 and the slider 3, the communicate pressure in space of the liquid medium that flows through in two of barrier film 4 and protecgulum 9 and metacneme 5 and slider 3 formations and the valve body before being higher than, simultaneously because preceding barrier film 4 bears the area of passage of the area of pressure much larger than the front valve shell liquid entering hole with metacneme 5 in Seal cage, under the elevated pressures effect, flowing to the liquid that constitutes two Seal cages that communicate with pilot line 11 between metacneme 5 and bonnet 10 and preceding barrier film 4 and the slider 3 by control ring 18 can increase gradually, under liquid in Returnning spring 12 and Seal cage (direction as shown by arrows) the pressure acting in conjunction, barrier film 4 and metacneme 5 flow through the spatial motion that liquid medium communicates before making in two of the lower preceding barrier film 4 of pressure and protecgulum 9 and metacneme 5 and slider 3 formations and valve body, preceding barrier film 4 and metacneme 5 are equipped with drive the sliding pole axis 7 of seal disc 13 towards one end motion of valve body liquid entering hole, valve seat 15 on making seal disc 13 and being fixed on water valve body 1 into matches, and makes hydraulic control valve be in full closing state.

Control ring 18 on pilot line 11 is in opening state, when control ring 19 is in a certain aperture state, flow to the liquid that constitutes two Seal cages that communicate with pilot line 11 between metacneme 5 and bonnet 10 and preceding barrier film 4 and the slider 3 by control ring 18, to be in a kind of dynamic balance state with the liquid that flows out two Seal cages that communicate with pilot line 11 of formation between metacnemes 5 and bonnet 10 and preceding barrier film 4 and the slider 3 by control ring 19, make hydraulic control valve be in full open and totally-enclosed between a certain state.

The front valve shell 1 and the rear valve body 2 of hydraulic control valve of the present utility model can adopt forms such as stud bolt, screw to be fixed on the outer of 3 two end faces of slider, can utilize Sealing to seal between front valve shell 1, rear valve body 2 and the slider 3, or utilize sealer to seal.Metacneme clamping plate 8 adopt forms such as nut 16, circle locknut to be fixed on the sliding pole axis 7, seal disc 13 normally is made of a disk and the rubber material that is fixed on the disk, match with the sealing surface of valve seat 15 on being fixed on front valve shell 1 and seal in the plane that utilizes rubber material, also seal disc 13 and valve seat 15 can be manufactured the cone that matches and seal, other well-known seal form is sealed.Seal disc 13 adopts seal disc pressing plate 14, axle sleeve 17 and nut 16 to be fixed on the sliding pole axis 7, and valve seat 15 can adopt threaded connection method to be fixed on the front valve shell 1, also can adopt screw on front valve shell 1.Protecgulum 9 and bonnet 10 adopt usually and are bolted on the slider 3.

Before barrier film 4 and metacneme 5 adopt the material of high strength, ageing-resistant, good springiness such as nylon to strengthen Neoprene, Dingqing's rubber or elastic metallic material to make the significant prolongation in working life of barrier film 4 and metacneme 5 before can making.

Can utilize Sealing to seal between the protecgulum 9 of hydraulic control valve of the present utility model and bonnet 10 and the sliding pole axis 7, because sliding pole axis 7 often is moved, can produce friction with protecgulum 9 and slider 3 unavoidably, so be necessary to adopt high-abrasive material to make protecgulum 9 and slider 3.Physical dimension as protecgulum 9 and slider 3 is bigger, also can be made into modular structure, is about to its interior ring that matches with sliding pole axis 7 and adopts high-abrasive material to make, and outer shroud then utilizes lower-cost material to make.

Front valve shell 1, rear valve body 2, slider 3, protecgulum 9, bonnet 10, preceding barrier film clamping plate 6, metacneme clamping plate 8, nut 16, sliding pole axis 7, seal disc pressing plate 14, valve seat 15, axle sleeve 17 adopt cast iron materials, cast steel material, stainless steel material or Cu alloy material to make.

Hydraulic control valve of the present utility model, by changing control ring 18, the control ring 19 on the pilot line 11, can make it have decompression venting valve, remote control float valve, slowly closed silencing check valve, hydro electric brake control valve, flow control valve, pressure release and hold the function of pressing safety valve, two altitude valves, emergency shut-in valve, the valves such as alarm valve that drench with rain.

Claims

1, a kind of hydraulic control valve, comprise valve body and spool, it is characterized in that: described valve body comprises front valve shell (1), rear valve body (2), slider (3), preceding barrier film (4), metacneme (5), protecgulum (9), bonnet (10), described front valve shell (1) is fixed on the outer of (3) two end faces of described slider with described rear valve body (2), the end face of described slider (3) is coated with preceding barrier film (4) and metacneme (5), barrier film (4) utilizes described protecgulum (9) to be fixed on the described slider (3) before described, described metacneme (5) utilizes described bonnet (10) to be fixed on the described slider (3), the space that the liquid medium that flows through in two of formations and the valve body between barrier film (4) and described protecgulum (9) and described metacneme (5) and the described slider (3) before described communicates, described metacneme (5) and described bonnet (10) and described before two Seal cages that are connected with pilot line (11) of formation between barrier film (4) and the described slider (3), described spool comprises sliding pole axis (7), barrier film clamping plate (6) before a pair of, a pair of metacneme clamping plate (8), barrier film (4) utilizes a pair of described preceding barrier film clamping plate (6) to fixedly connected with described sliding pole axis (7) with a pair of described metacneme clamping plate (8) with described metacneme (5) before described, described sliding pole axis (7) is equipped with Returnning spring (12) towards valve body liquid outlet one end, described Returnning spring (12) one ends withstand on the described bonnet (10), the other end withstands on the end face of described metacneme clamping plate (8), described sliding pole axis (7) is mounted with seal disc (13) towards valve body liquid entering hole one end, described seal disc (13) matches with valve seat (15) on being fixed on described front valve shell (1), described before barrier film (4) in Seal cage, bear the area of passage of the area sum of pressure with described metacneme (5) greater than described front valve shell (1) liquid entering hole.

2, according to the described a kind of hydraulic control valve of claim 1, it is characterized in that: barrier film (4) and described metacneme (5) bear 2.8～4.8 times of area of passage that the area sum of pressure is described front valve shell (a 1) liquid entering hole before described in Seal cage.

3, according to the described a kind of hydraulic control valve of claim 2, it is characterized in that: barrier film clamping plate (6) and described metacneme clamping plate (8) bear 1.1～3.8 times of area of passage that the area of pressure is described front valve shell (a 1) liquid entering hole before described in Seal cage.

4, according to the described a kind of hydraulic control valve of claim 3, it is characterized in that: described seal disc (13) adopts seal disc pressing plate (14), axle sleeve (17) and nut (16) to be fixed on the described sliding pole axis (7).

5, according to the described a kind of hydraulic control valve of claim 4, it is characterized in that: barrier film (4) and described metacneme (5) adopt nylon reinforcement Neoprene, Dingqing's rubber or elastic metallic material to make before described.

6, according to the described a kind of hydraulic control valve of claim 5, it is characterized in that: described front valve shell (1), described rear valve body (2), described slider (3), described protecgulum (9), described bonnet (10), described preceding barrier film clamping plate (6), described metacneme clamping plate (8), described nut (16), described sliding pole axis (7), described seal disc pressing plate (14), described valve seat (15), described axle sleeve (17) adopt stainless steel material or Cu alloy material to make.

7, according to the described a kind of hydraulic control valve of claim 6, it is characterized in that: described valve seat (15) employing is threaded or screw is fastened on the described front valve shell (1).

8, according to the described a kind of hydraulic control valve of claim 7, it is characterized in that: described protecgulum (9) and described bonnet (10) adopt bolt to be fastened on the described slider (3).

9, according to the described a kind of hydraulic control valve of claim 8, it is characterized in that: described metacneme clamping plate (8) adopt institute's nut (16) to be fixed on the described sliding pole axis (7).

10, according to the described a kind of hydraulic control valve of claim 9, it is characterized in that: described front valve shell (1) adopts stud bolt to be fixed on the outer of (3) two end faces of described slider with described rear valve body (2).