CN201779301U

CN201779301U - Hand-operated rubber tube valve

Info

Publication number: CN201779301U
Application number: CN2010205242945U
Authority: CN
Inventors: 张曙霞; 崔德松; 张金文
Original assignee: WUHU SANJIN MACHINERY MANUFACTURING Co Ltd
Current assignee: WUHU SANJIN MACHINERY MANUFACTURING Co Ltd
Priority date: 2010-09-07
Filing date: 2010-09-07
Publication date: 2011-03-30
Anticipated expiration: 2020-09-07

Abstract

The utility model discloses a hand-operated rubber tube valve, which comprises a valve body, wherein a fluid channel is arranged at the bottom of the valve body, an inlet and an outlet are formed at the two ends of the fluid channel respectively, an inner screw rod and an outer screw rod are arranged inside a valve cavity of the valve body, the inner screw rod is embedded in the outer screw rod, the inner and the outer screw rods are in threaded fit, the end part of the outer screw rod extends out of the valve body, and a hand wheel is mounted at the end part of the outer screw rod; a rubber tube is arranged inside the fluid channel and is in joint with the inner wall of the fluid channel; and an upper valve core and a lower valve core are included, the upper valve core is fixedly connected with the inner screw rod, the lower end of the lower valve core is fixedly mounted in the valve cavity of the valve body, and the lower end of the upper valve core and the upper end of the lower valve core are respectively abutted against the outer side wall of the rubber tube. The utility model has simple and compact structure, large sealing area and long service life, is convenient in operation, and facilitates installation and maintenance, thereby having excellent practical value.

Description

Manual rubber pipe valve

Technical field

The utility model relates to a kind of manual rubber pipe valve.

Background technique

Rubber pipe valve is a valve head with elastic valve body, and this elastomer valve physical efficiency is pushed together by a mechanism or process fluid pressure, or is called " compressing ".In most of the cases, elastomer is the complete lining of a simple lining at whole flow channel inside and flange.Lining completely cuts off all moving elements and logistics layer, and the parts that do not contact with solid just can be by more cheap material like this, for example carbon steel manufacturing.Because logistics is all contained by that cover of planning, so this type of has increased the benefit that does not need stuffing box again.

When the rubber pipe valve seal with buss, its sealing is large-area, then is a simple seal point to other most of valves.Because this characteristics, big object or shot can be contained in the sealing area of valve, and still keep sealing.Reason for this reason, rubber pipe valve can desirable being used to contain granule fluid or alkene slurry, for example food industry, contains sand water system, sewage treatment, non-manufacturing process water, particle logistics etc.Because the rebound elasticity relevant with elastomeric bushing effectively resisted because the wearing and tearing of solid particle by causing lining.Simultaneously according to the material selection of lining, sebific duct can be good at using the medium of those or erode metallic surfaces especially.

The major limitation of rubber pipe valve is because the temperature and the pressure of elastomeric bushing are limit, and he can only be used for the lower pressure operation.Because plain bushing material (tetrafluoroethylene, neoprene, buna-N and carbon fluorine rubber) also relates to rubber hose, the pressure rating that is used for the rubber hose of rubber pipe valve has replaced the pressure rating of common valve.Though it is the elastomer pressure rating is low, single through using special lining or valve body structure can improve these pressure limit.For example, use the rubber bushing that has wire netting in the rubber, or around lining, increased pressure limit with the pressure of offsetting the operation logistics such as a kind of external fluid (under the pressure).

Another kind of restriction is to work as valve at open position, when if the pressure in the process system thinks that vacuum moves or produces high pressure and falls, unless being actually, lining is installed in outside the closure member, then lining can be damaged by pressure, it is also poor that rubber pipe valve is worked in the pulsation logistics, is to cause too early damage because of frequent expansion of lining or contraction.When rubber pipe valve is used for when fluid operated, liquid must have some fluid motion, because the large size sealing area of lining makes displacement of fluid.Incompressible performance of liquid makes lining produce additional strain and causes lining to break in addition.

For straight-line pass and interference-free logistics, the pressure of rubber pipe valve falls very little or does not have, can desirable being used to out---close operation.Because they are low voltage operated through being usually used in, so their throttlings easily and the flow control that provides at 50% stroke place to the last.Knowledge is because the smooth inner wall of lining and rebound elasticity and early know minimum 50% place, to avoid using invalid general of whole strokes.

For the operating mode (special in sharp-pointed particle) of very abrasion, recommending accurate side is not carry out throttling near the valve closing place, produces the groove that can cause potential row because shot can corrode lining.Lining be that its smooth wall peace and stability flow divert produces minimum turbulent flow or pipeline vibration on the other hand.Elastic lining also can obtain tight the closing of bubbling easily.

Most rubber pipe valve is to wake up with a start operation through air or methods such as other liquid or use manual control device such as band pressure.They also can automations and are used as control valve.Common chi 2-12in of rubber pipe valve (DN50 is to DN 300) and ANDI150 level (PN16).

The model utility content

The purpose of this utility model provides a kind of manual rubber pipe valve, improves the sealability and the working life of rubber pipe valve.

The technical solution of the utility model is as follows:

A kind of manual rubber pipe valve, include valve body, the bottom of described valve body has the fluid passage, the two ends of described fluid passage are respectively inlet/outlet, it is characterized in that: be provided with inside and outside screw mandrel in the valve pocket of described valve body, screw mandrel is nested in the out screw rod in described, is screw-thread fit between the inside and outside screw mandrel, and the end of described out screw rod is stretched out outside the valve body and handwheel is installed; Be provided with rubber pipe in the described fluid passage, the inwall of described rubber pipe and described fluid passage fits; Also include upper and lower spool, described upper valve core is fixedlyed connected with described interior screw mandrel, and the lower end of described lower valve core is fixedly mounted in the valve pocket of described valve body, and the lower end of described upper valve core and the upper end of lower valve core withstand on respectively on the outer side wall of described rubber pipe.

The beneficial effects of the utility model:

The utility model is simple in structure, compact, and sealing area is big, and is easy to operate, is convenient to installation and maintenance, and long service life has good use value.

Description of drawings

Fig. 1 is the utility model structural representation.

Embodiment

Referring to Fig. 1, a kind of manual rubber pipe valve, include valve body 1, the bottom of valve body 1 has fluid passage 2, the two ends of fluid passage 2 are respectively inlet/outlet, are provided with inside and outside screw mandrel 3,4 in the valve pocket of valve body 1, and interior screw mandrel 3 is nested in the out screw rod 4, between the inside and outside screw mandrel 3,4 is screw-thread fit, and the end of out screw rod 4 is stretched out outside the valve body 1 and handwheel 5 is installed; Be provided with rubber pipe 6 in the fluid passage 2, rubber pipe 6 fits with the inwall of fluid passage 2; Also including upper and lower spool 7,8, fixedlys connected with interior screw mandrel 3 in the upper end of upper valve core 7, and the lower end of lower valve core 8 is fixedly mounted in the valve pocket of valve body 1, and the upper end of the lower end of upper valve core 7 and lower valve core 8 withstands on respectively on the outer side wall of rubber pipe 6.

By the rotation of handwheel, inside and outside screw mandrel generation relative movement, and drive upper valve core extruding rubber pipe causes rubber pipe to deform and shrinks to the center, until cutting off the fluid passage fully, thus throttle down; By the rotation of handwheel, inside and outside screw mandrel generation relative movement, upper valve core moves upward with interior screw mandrel, and rubber pipe begins to recover under self tension force effect, and is unimpeded fully until the fluid passage, thus Open valve.Under the positioning action of lower valve core, rubber pipe evenly shrinks or recovers.

Claims

1. manual rubber pipe valve, include valve body, the bottom of described valve body has the fluid passage, the two ends of described fluid passage are respectively inlet/outlet, it is characterized in that: be provided with inside and outside screw mandrel in the valve pocket of described valve body, screw mandrel is nested in the out screw rod in described, is screw-thread fit between the inside and outside screw mandrel, and the end of described out screw rod is stretched out outside the valve body and handwheel is installed; Be provided with rubber pipe in the described fluid passage, the inwall of described rubber pipe and described fluid passage fits; Also include upper and lower spool, described upper valve core is fixedlyed connected with described interior screw mandrel, and the lower end of described lower valve core is fixedly mounted in the valve pocket of described valve body, and the lower end of described upper valve core and the upper end of lower valve core withstand on respectively on the outer side wall of described rubber pipe.