CN2466464Y

CN2466464Y - Rack type tap

Info

Publication number: CN2466464Y
Application number: CN 01213008
Authority: CN
Inventors: 周保国
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-16
Filing date: 2001-02-16
Publication date: 2001-12-19
Anticipated expiration: 2011-02-16

Abstract

The utility model relates to a rack type tap, which is characterized in that the interior of a hole channel of a valve body is provided with valve rod which is provided with a gear rack and can slide backwards and forwards; a closing assembly of the head of the valve rod is positioned on the outside of a tap water inlet; a gear which drives the gear rack to move backwards and forwards is arranged on one side of a gear rack on the valve body. The gear just needs to be provided with part teeth. The closing assembly is commonly composed of a rubber sealing ring, a fixing screw, etc. The utility model is sealed by depending on the media pressure in a pipe. Thus, the sealing performance is good, and the closing is firm. The valve rod of the tap can not rotate, and only does a lifting movement. Thus, the valve core and the sealing rubber ring can not generate the friction, and the service life is long. Members in the valve can also hardly generate the situations of corrosion and pollution of the water quality.

Description

The rack-type tap

The utility model relates to the tap of seal fluid medium, particularly a kind of tap that promotes closure member with gear, rackwork.

The present tap that uses is spiral, and valve rod and spool are along with the operator rotation produces lifting, thereby keying is leading.The tap closure is to rely on the very big pressure of valve rod, and rubber seal face is fitted tightly, and could stop fluid to see through, and reaches sealing purpose.Spool often is under the high pressure conditions, and the frictional force during keying is easy to make rubber gasket to be damaged, and is particularly opening under the frequent situation, and working life is very short.When this tap was worked, valve rod often contacted with liquid medium, is easy to get rusty and damage.Long period need not will be flowed out one contaminated yellow water as opening tap every morning.Another kind of tap commonly used is a stopcock, and its shortcoming is the switch effort, and sealing surface weares and teares easily, and water clock easily takes place, and the life-span is not long yet.

The purpose of this utility model is the above-mentioned difficulties that will overcome prior art, provides a kind of and relies on medium in the pipe to produce sealing load, sealing surface does not rub in opening-closing process tap, thereby life of valve is prolonged, and sealing is reliable.

Solution of the present utility model is: in the duct of valve body, be provided with a band tooth bar can before and after the valve rod that slides; The closing assembly of valve rod head is positioned at the leading water intake outside; The gear that the driving tooth bar moves forward and backward is loaded on a side of valve body upper rack.

Above-mentioned closing assembly generally is made up of rubber seal and set screw etc.In order to improve the reliability of work, Returnning spring can be installed in the closing assembly rear portion.

Above-mentioned gear can have head or the swing handle of being convenient to be rotated operation.

Above-mentioned gear can be the partial gear that has only the part tooth.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the overall structure schematic representation of rack-type tap.

Fig. 2 is the structural representation of Fig. 1 middle gear.

Fig. 3 is the structural representation of Fig. 1 middle rack shape valve rod.

Referring to Fig. 1, in this leading valve body 5 duct 15 is arranged, this duct and leading water intake 16 have same center line.There is the screw thread 3 of adapter water intake 16 outsides.Valve rod 4 is housed in the duct 15, and the closing assembly 10 of valve rod head is made up of rubber seal 2, nut 1 and pad etc.Closing assembly 10 is positioned at the leading water intake outside, is external-open gate-type closing assembly, and promptly when valve rod drive closing assembly outwards moved, tap was opened.The end face of water intake 16 is a valve seat.The maximum characteristics of this tap are that operating mechanism adopts gear, rack structure.As figure, be associated with tooth bar 8 at valve rod 4 rear portions, tooth bar can slide front and back in duct 15 as the actuator of valve rod.Actuation gear 6 is installed at the position that adapts with tooth bar 8 on valve body 5, among the figure it is contained in the other hole seat 19 of valve body.Hole seat 19 communicates with duct 15, makes gear, tooth bar be in the normal engaged position.The pivot 11 of gear 6 penetrates in the aperture of hole seat 19 bottoms, does not draw among the figure.Actuation gear 6 is by gear head 18 or handle 7 rotations, thereby drive tooth bar and valve rod are elastic, opening/shutting valve.Valve rod is compared with the duct carefully, can not influence liquid and flow to water outlet 9 by water intake 16.

Referring to Fig. 1,2, the amplitude of doing lifter motion owing to valve rod is less, gets final product so drive 6 needs parts of gear tooth of tooth bar 8 motions, does not need gear structure completely.There is positioning screw hole 12 gear pivot 11 ends.

Referring to Fig. 3, the screw thread 14 that the end that valve rod 4 cooperates with closure member is provided with boss 13 and screws in for nut 1.

This leading water intake 16 links to each other with water pipe by screw thread 3.The closing assembly 10 of tap is compressed by the pressure of pipe inner high voltage liquid, and water intake 16 end faces are valve seat.This driving fit form, sealing is strong, closes firmly.Also can behind closing assembly 10, set up a Returnning spring (not drawing among the figure), the reliability of closing with further raising.

Valve body material is optional as required cylinder iron, Cuprum alloy, stainless steel or bakelite etc.Sealing ring material also can be fluoroplastic, nylon or polyethylene etc. except that rubber.

The utility model compared with prior art has following advantage:

1. rely on pressure medium sealing in the pipe, good airproof performance is closed firmly.

2. the valve rod of tap does not rotate, and only does elevating movement, thereby spool and sealing rubber ring do not produce friction, longevity Order longer.

3. the valve inner member does not contact with liquid medium, thereby the situation of corrosion damage and polluted water can not take place.

4. simple in structure, reliable operation, easy to use.

Claims

1, rack-type tap, comprise valve body (5), water outlet (9) and water intake (16), in water intake (16) outside the screw thread (3) that links with water pipe is arranged, it is characterized in that in the duct (15) of valve body (5), being provided with a band tooth bar (8) can before and after the valve rod (4) that slides; The closing assembly (10) of valve rod (4) head is positioned at leading water intake (16) outside; The gear (6) that driving tooth bar (8) moves forward and backward is loaded on a side of valve body upper rack (8).

2, tap as claimed in claim 1 is characterized in that said closing assembly (10) is made up of rubber seal (2) and set screw (1).

3, tap as claimed in claim 1 or 2 is characterized in that at said closing assembly (10) rear portion Returnning spring being housed.

4, tap as claimed in claim 1 or 2 is characterized in that said gear (6) has head (18) or the swing handle (7) of being convenient to be rotated operation.

5, tap as claimed in claim 1 or 2 is characterized in that said gear (6) is the partial gear that has only the part tooth.