CN1038527C

CN1038527C - Seal ring displacement type valve

Info

Publication number: CN1038527C
Application number: CN 93102674
Authority: CN
Inventors: 游伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-16
Filing date: 1993-03-16
Publication date: 1998-05-27
Anticipated expiration: 2013-03-16
Also published as: CN1099109A

Abstract

The present invention discloses a valve which is characterized in that one section of the circle of an inner hole of a valve body made of plastic is made into a step-shaped water passing groove, a plastic valve core does not rotate, and the valve can be opened or closed and the water through amount can be adjusted by the synchronous displacement of the plastic valve core and a rubber seal ring in the valve body. The present invention is suitable for various water-using positions in daily life; the torque is transmitted to a gear by a handle, and the gear is meshed with a rack on the valve core so that the relative position between the seal ring and the step-shaped water passing groove is changed by the synchronous displacement of the valve core and the seal ring; when a spring is arranged on the tail of the inner hole of the valve body, the valve can be automatically closed after water is used. Except for the spring and the seal ring, the rest parts of the valve can be all made of plastic.

Description

Seal ring displacement type valve

The present invention relates to a kind of seal ring displacement type valve, it is except that seal ring and spring, and remaining parts can be injection molded with engineering plastics, is particularly suitable for various daily life waters place.

Existing daily life water valve, great majority are cock-types, be to utilize radially to insert stopper with holes (or stopper not with holes), rotate and open and close (or around axis rotation own, make originally by screw thread upper and lower displacement opens and closes on the axis of oneself) around axis own from valve body.This kind valve, because valve body, spool rigidity surface of contact are big, thereby friction is big, wearing and tearing are big; Spool and valve body temperature influence and be out of shape, often chucking and stuck; When the atresia plug valve opened and closed, because pitch is short, the cock rotational angle was too big, troublesome poeration; Valve body and spool are done with steel, get rusty easily, and make seal failure and make troubles to operation; Because spool and valve body coordinate force and spool corner are too big, plug valve can not be realized closing with the back self-acting valve, says nothing of and realizes riding opening and closing; On the manufacturing process, the steel energy consumption is big, and the machining waste is big, and efficient is low, the quality control difficulty, and appearance change is little.

Task of the present invention just provides a kind of energy and realizes that most of parts are injection molded with engineering plastics, and scale production technology is simple, and cost is low, and flexible and convenient operation can realize realizing riding the valve of keying where necessary with the back auto-closing.

Task of the present invention is finished as follows: the endoporus circumference of valve body is made stepped shaft for one section cross tank, the groove two ends are on an axis two holes, intake-outlets each other not.When handle rotates gear (being not more than 60 °), because the meshing relation of gear and spool upper rack, spool and seal ring are made synchronous finite displacement, have changed the relative position that seal ring and stepped shaft are crossed tank, thereby reach the purpose of keying and regulating valve water-flowing amount.Because the cooperation of valve body inner bore and seal ring is flexible the contact, afterbody is that whole spool and valve body inner bore do not have rubbing surface, thereby have guaranteed the flexibility of spool and seal ring displacement by a few row's rolling element bearings and location.Again because valve body inner bore and spool are contactless, valve body inner bore surface and spool circumferential surface hardness are required just to reduce greatly, and valve body inner bore when producing, the large-scale industrialization injection moulding can reach the desired light slippery, therefore, provide reliable basis for produce this kind valve with engineering plastics.In gear and tooth bar meshing relation, gear rotates in being not more than 60 ° scope, just can make the displacement amount of seal ring reach requirement, thereby easy to operate.Between corresponding of gear face and spool rach slot, and gear, the location of rotating shaft, supporting, all be to finish by rolling element, there is not rubbing surface during rotation, and the axially locating between them, supporting force are the appropriate amounts that keeps a flexibility by spring, thereby, rotate flexibly.At the valve afterbody spring is installed, can be reached the purpose of auto-closing, for operated by foot provides preceding topic condition.All to be that non-metal engineering is plastic injection-moulded form major part of the present invention, and much lower than steel because of plastics proportion, relative cost just descends greatly, and machining is almost nil, and degree of precision reaches easily, and technology is simple, and large-scale production mass stability is good.

Be described in further detail below with reference to accompanying drawing:

Fig. 1 is the present invention's a structure longitudinal sectional drawing

Fig. 2 is that the present invention's structure is in A place transverse cross-sectional view

Fig. 3 is that the present invention's structure is in B place transverse cross-sectional view

Fig. 4 is the circumference expanding map of the present invention's structure valve body L section inner hole surface

With reference to Fig. 1: evenly the distribution stepped shaft is crossed tank (as Fig. 1 and Fig. 4 unfolded drawing) on valve body 1L section endoporus circumference, and the two ends of groove have not in two holes of an axis, each other intake-outlet (as Fig. 1, Fig. 3).When the L section was fully between seal ring 3,4, the sealed circle 3 in right summit and valve body 1 right hole of crossing tank disconnected, thereby reached the purpose of closure valve; When seal ring 3 was displaced to the left side on the right summit of L section, stepped shaft crosses tank and valve body 1 right endoporus is connected, thereby has reached the purpose that opens valve; When seal ring 3 on the L section the longest the tank and the shortest the tank between during displacement, valve body 1 right endoporus with cross that tank is connected quantity, area changes thereupon, thereby reached the purpose of regulating valve water amount.When operation, the handle 14 torsion pass squares among the figure two are given rotating shaft 12, and gear 5 is given in rotating shaft 12 torsion pass square again, and gear 5 meshes with the tooth bar of spool 2 afterbodys, and spool 2 is just made synchronous shift with seal ring 3,4.Contact in order to guarantee that spool 2 afterbody outer surfaces do not produce directly with the corresponding surface of valve body 1 endoporus, used rolling element 8 to locate and support.

The rotating shaft 12 of transmitting torque and with tooth bar meshed gears 5, it is axially, radial location and supporting used rolling element 9 and 11; Guaranteeing spool 2, gear 5, rotating shaft 12, and between the end cap 13 of location during coordinate force constant and flexible, used spring 10.At the valve afterbody spring 6 has been installed.When spool 2 during to left dislocation, just compressed spring 6 simultaneously, make spring 6 store internal force.After the moment of torsion that acts on handle 14 disappeared, the axial force that spring 6 produces when replying promoted spool 2, thereby had reached the purpose of auto-closing valve.

7 back covers of valve afterbody end cap, to rolling element 8 location, and the effect of support spring 6.

Claims

1, valve of being made up of plastics valve body (1), plastics spool (2), two rubber seal (3), (4) is characterized in that even distribution stepped shaft is crossed tank on valve body (1) endoporus L section circumference.

2, the valve of claim 1 regulation is characterized in that seal ring (3), (4) arranged spaced are on spool (2).

3, the valve of claim 1 and 2 regulations is characterized in that valve body (1) goes up L section stepped shaft and cross tank and communicate all the time with the side opening at valve body (1) B--B place.

4, the valve of claim 3 regulation is characterized in that the stepped shaft on valve body (1) the L section is crossed tank, with the break-make in hole, valve body (1) L section the right, and the size of valve water-flowing amount, by the relative position decision of living in of seal ring (3) and valve body (1) L section.

5, the valve of claim 4 regulation is characterized in that the side opening of valve body (1) and the right-hand member of axial bore, as water intake and water outlet, can change mutually.

6, the valve of claim 5 regulation is characterized in that the tooth bar engagement that gear (5) and spool (2) are last.

7, the valve of claim 6 regulation is characterized in that the synchronous shift amount that spool (2) and seal ring (3), (4) are done, by the direction and the size decision of gear (5) rotation.

8, the valve of claim 7 regulation, gear (5) and spool (2) tooth bar engagement place radially, distribution radial support rolling element (8).