CN209725256U - Valve before table - Google Patents

Abstract

The utility model proposes valves before a kind of table, including valve body, valve body is axially disposed water inlet end, water outlet, the water outlet of valve body is provided with the resistance reflux unit for the reflux of anti-water-stop body, hindering reflux unit includes shell, shell one end is detachably connected with water outlet, inner walls are provided with the first locating piece, second locating piece, first locating piece, the several first permeable mouths flowed through for water body are offered on second locating piece respectively, several second permeable mouths, the first aperture is offered on first locating piece, the second aperture is offered on second locating piece, first aperture, the central axis of second aperture coincides, first locating piece, slip is equipped with sliding bar in second locating piece, the sealing block for sealing the first permeable mouth is fixedly installed on sliding bar.

Description

Valve before table

Technical field

The utility model relates to technical field of living goods, in particular to valve before table.

Background technique

In order to facilitate the installation and maintenance of water meter, Running-water Company can install a valve to control confession before water meter The flowing of water body in water water pipe, and the most valves used are exactly gate valve, gate valve specifically includes that valve body, valve deck, valve plate, valve Bar and opening device, the valve body is axially disposed a water inlet end, water outlet, the valve plate be set to the water inlet end with it is described Between water outlet, the opening pierced into for the valve rod is offered on the valve body, valve deck is stated and is set to the overthe openings, it is described Valve rod one end passes through the valve deck and is connected with the valve plate, and the opening device is set on the free end of the valve rod, lock Valve can only control water body circulation or block water body circulation, and gate valve is not closed usually in the case where normal use water meter, We can have found that the numerical value on water meter reduces sometimes when using water meter, this is because before some extraneous factors result in water meter Hydraulic pressure afterwards is different and causes to flow through the water body reflux of water meter, causes the numerical value on water meter to reduce, water body flows back on water meter Numerical value will inaccuracy, will result in read untrue, can not accurate recording water body usage amount.

To solve the above-mentioned problems, Patent No. 201120323528.4 discloses a kind of loose joint one-way valve, utilizes lock The combination of valve and check-valves, although the problem of can solve water body reflux, a kind of loose joint one-way valve is in the mistake used It is had following defects that in journey

1, a kind of valve body of loose joint one-way valve is integrated manufacture, which includes gate valve body and check-valves valve Body, due to the internal structure of check-valves is more complex and to internal required precision it is higher, so the manufacturing process of the valve body is more multiple Miscellaneous, the requirement to mold is relatively high, while increasing the cost of mold manufacture；

2, a kind of valve hole part dismounting of the non-return valve portion of loose joint one-way valve is inconvenient, when the spool portion of check-valves When part damages, the more difficult disassembly replacement of damage component, and also the inner wall of check-valves and valve rod can adhere to one layer after long-time service Scale influences the movement of leakproofness and valve rod, since the valve hole part of non-return valve portion dismounts inconvenience, so can not be periodically right The inside of check-valves is cleared up.

Utility model content

Therefore, for above-mentioned problem, the utility model proposes valves before a kind of reasonable in design, easy table of operation.

In order to solve the above technical problems, the solution that the utility model is taken are as follows: valve before table, including valve body, valve deck, Valve plate, valve rod and opening device, the valve body is axially disposed water inlet end, water outlet, and the valve plate is set to the water inlet Between end and the water outlet, the opening pierced into for the valve rod is offered on the valve body, valve deck is stated and is set to the opening Top, described valve rod one end pass through the valve deck and are connected with the valve plate, and the opening device is set to oneself of the valve rod By on end, the water outlet of the valve body is provided with the resistance reflux unit for the reflux of anti-water-stop body, the resistance reflux unit includes Shell, described shell one end are detachably connected with the water outlet, and the inner walls are provided with the first locating piece, the second positioning Block offers the several first permeable mouths flowed through for water body, several second on first locating piece, the second locating piece thoroughly respectively The mouth of a river offers the first aperture on first locating piece, the second aperture is offered on second locating piece, described first opens Hole, the second aperture central axis coincide, slip is equipped with sliding bar in first locating piece, the second locating piece, described The sealing block for sealing the described first permeable mouth is fixedly installed on sliding bar.

It is further improved to be: to be threadedly coupled between the shell and the water outlet, to be offered on the water outlet External screw thread offers the first internal screw thread with external screw thread cooperation on the shell.

It is further improved to be: to be provided between the sealing block and second locating piece for accelerating the sliding bar The return unit of reset.

Further improved to be: the return unit is trapezoidal spring, and the trapezoidal spring pocket is set on the sliding bar, institute It states trapezoidal spring one end and the sealing block contradicts, the other end and second locating piece contradict.

Further improved to be: first locating piece is detachably set between the shell and the water outlet, institute It states and is offered on shell for limiting first locating piece retention bead mobile to water discharging direction, the end face of the water outlet It is mobile to water inlet direction to limit first locating piece.

Further improved to be: the sealing block is sheet rubber, and the sheet rubber fixing sleeve is set on the sliding bar.

It is further improved to be: to be provided with sealing device between first locating piece and the end face of the water outlet, institute Stating sealing device is elastic rubber ring, and the elastic rubber ring is set on first locating piece.

Further improved to be: the water inlet end inner wall offers the second internal screw thread matched with connecting pipe.

Further improved to be: the other end inner wall of the shell offers spiral shell in the third matched with connecting pipe Line.

Further improved to be: opening device is handwheel, and the handwheel is fixedly installed on the free end of the valve rod.

By using preceding solution, the beneficial effects of the utility model are: the utility model structure is simple, design is closed Reason, the valve body of gate valve part and the shell of resistance reflux unit are separately manufactured using two molds, can lower answering for mold manufacture Miscellaneous degree, improves the manufacture efficiency of mold, while lowering the manufacturing cost of mold manufacture；The gate valve and resistance reflux dress of the utility model Be set to threaded connection, facilitate the dismounting of resistance reflux unit, at the same the first locating piece be removably mounted to the valve body of gate valve with It hinders between reflux unit, under the first locating piece is also dismantled therewith while resistance reflux unit is disassembled from the valve body of gate valve Come, the first locating piece disassembles the disassembly for just facilitating sliding bar and sheet rubber afterwards, directly extracts sliding bar out, on sliding bar Sheet rubber and trapezoidal spring just disassemble therewith, convenient for resistance reflux unit inside component inspection and replacement, increase this reality With novel service life；For the return unit that the utility model uses for trapezoidal spring, reaction speed is fast, can greatly reduce water The reflux of body guarantees the accuracy of water meter numerical value；To be threadedly coupled between the utility model and connecting pipe, facilitate practical The novel installation between connecting pipe.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of valve before the utility model embodiment table；

Fig. 2 is the structural schematic diagram for hindering reflux unit before the utility model embodiment table in valve.

Specific embodiment

Now in conjunction with the drawings and specific embodiments, the present invention will be further described.

Referring to figs. 1 to Fig. 2, the revealed valve before being table of the utility model embodiment, including valve body 11, valve deck 12, valve plate 13, valve rod 14 and handwheel 18, the valve body 11 is axially disposed water inlet end 15, water outlet 16, and 15 inner wall of water inlet end is opened Equipped with the second internal screw thread 151 matched with connecting pipe, the valve plate 13 is set to the water inlet end 15 and the water outlet Between 16, the opening 17 pierced into for the valve rod 14 is offered on the valve body 11, is stated valve deck 12 and is set in the opening 17 Side, the valve rod 14 include threaded rod 141, internal screw thread bar 142, and the threaded rod 141 connects with 142 screw thread of internal screw thread bar It connects, the internal screw thread bar 142 is rotatably set on the valve body 11 by protrusion, and the free end of the threaded rod 141 passes through The valve deck 12 is connected with the valve plate 13, and the handwheel 18 is set on the free end of the internal screw thread bar, the valve body 11 water outlet 16 is provided with the resistance reflux unit for the reflux of anti-water-stop body, and the resistance reflux unit includes shell 21, described The first internal screw thread 211 is offered on shell 21, and the outer spiral shell with first internal screw thread 211 cooperation is offered on the water outlet 16 Line 161, the other end inner wall of the shell 21 offer the third internal screw thread 213 matched with connecting pipe, the shell 21 Inner wall is provided with the first locating piece 22, the second locating piece 23, first locating piece 22 be detachably set to the shell 21 with Between the water outlet 16, offered on the shell 21 for limiting first locating piece 22 limit mobile to water discharging direction Position protrusion 212, the end face of the water outlet 16 limit first locating piece 22 to the movement of water inlet direction, first locating piece Elastic rubber ring 223 is provided between 22 and the end face of the water outlet 16, the elastic rubber ring 223 is set to described first On locating piece 22, second locating piece is fixedly installed on the inner walls, first locating piece 22, the second locating piece 23 It is upper to offer two the first permeable mouths, 221, two the second permeable mouths 231 flowed through for water body, first locating piece 22 respectively On offer the first aperture 222, the second aperture 232, first aperture 222, second are offered on second locating piece 23 The central axis of aperture 232 coincides, and slip is equipped with sliding bar 24, institute in first locating piece 22, the second locating piece 23 State the sheet rubber 25 being fixedly installed on sliding bar 24 for sealing the described first permeable mouth 221, the sheet rubber 25 with it is described The trapezoidal spring 26 resetted for accelerating the sliding bar 24 is provided between second locating piece 23, the trapezoidal spring 26 is arranged In on the sliding bar 24, described trapezoidal 26 one end of spring and the sheet rubber 25 are contradicted, the other end and second locating piece 23 contradict.

Working principle of the utility model is: the water inlet end of gate valve is connected with water outlet when gate valve is opened, water body is from gate valve Water inlet end flow to the water outlet of gate valve, then water body flows to the first permeable mouth of the first locating piece from gate valve water outlet, in water The extruding downslide lever of pressure drives sheet rubber mobile to water discharging direction, and water body flows to water from the second permeable mouth on the second locating piece Table, the hydraulic pressure before and after encountering some extraneous factors and resulting in water meter is different and when the water body for flowing through water meter being caused to flow back, Sheet rubber is while laying down into the hydraulic pressure in water direction and will be permeable on the first locating piece under the Rapid reset of trapezoidal spring Mouth is sealed, and water body is prevented to flow back, and after the hydraulic pressure of water inlet end is normal, sheet rubber is under the extruding of hydraulic pressure again to water discharging direction Mobile, water body flows to water meter from the second permeable mouth on the second locating piece again.

Based on preceding solution, the return unit can also be cylindrical spring or compressed spring or elastic rubber set, city The components that on face sliding bar can reset meet the requirements；The opening device can also be handle or handle, market On the component of valve rod rotation can be made to meet the requirements.

The modifications and changes done with this creation, all belong to the scope of the patents of this creation opinion, and are not limited to embodiment and are taken off The person of showing.

Claims (10)

1. valve before table, including valve body, valve deck, valve plate, valve rod and opening device, the valve body is axially disposed to be had water inlet end, goes out Water end (W.E.), the valve plate are set between the water inlet end and the water outlet, are offered on the valve body and are pierced into for the valve rod Opening, state valve deck and be set to the overthe openings, described valve rod one end passes through the valve deck and is connected with the valve plate, described Opening device is set on the free end of the valve rod, it is characterised in that: the water outlet of the valve body is provided with for preventing water The resistance reflux unit of body reflux, the resistance reflux unit includes shell, and described shell one end is detachably connected with the water outlet, The inner walls are provided with the first locating piece, the second locating piece, offer respectively on first locating piece, the second locating piece The several first permeable mouths, several second permeable mouths flowed through for water body offers the first aperture on first locating piece, described Offer the second aperture on second locating piece, first aperture, the second aperture central axis coincide, first positioning Slip is equipped with sliding bar in block, the second locating piece, is fixedly installed on the sliding bar permeable for sealing described first The sealing block of mouth.

2. valve before table according to claim 1, it is characterised in that: connect between the shell and the water outlet for screw thread It connects, external screw thread is offered on the water outlet, the first internal screw thread with external screw thread cooperation is offered on the shell.

3. valve before table according to claim 1, it is characterised in that: be arranged between the sealing block and second locating piece There is the return unit resetted for accelerating the sliding bar.

4. valve before table according to claim 3, it is characterised in that: the return unit is trapezoidal spring, the trapezoidal spring It is sheathed on the sliding bar, the trapezoidal spring one end and the sealing block contradict, and the other end is supported with second locating piece Touching.

5. valve before table according to claim 1, it is characterised in that: first locating piece is detachably set to the shell Between the water outlet, offered on the shell for limiting first locating piece limit convex mobile to water discharging direction It rises, it is mobile to water inlet direction that the end face of the water outlet limits first locating piece.

6. valve before table according to claim 4, it is characterised in that: the sealing block is sheet rubber, and the sheet rubber is fixed It is sheathed on the sliding bar.

7. valve before table according to claim 5, it is characterised in that: the end face of first locating piece and the water outlet it Between be provided with sealing device, the sealing device is elastic rubber ring, and the elastic rubber ring is set to first locating piece On.

8. valve before table according to claim 1, it is characterised in that: the water inlet end inner wall is offered to match with connecting pipe The second internal screw thread closed.

9. valve before table according to claim 1, it is characterised in that: the other end inner wall of the shell offers and connecting tube The third internal screw thread that road matches.

10. valve before table according to claim 1, it is characterised in that: opening device is handwheel, and the handwheel is fixedly installed on The free end of the valve rod.