CN203784387U

CN203784387U - Micro-force switch valve with stop function

Info

Publication number: CN203784387U
Application number: CN201420199777.0U
Authority: CN
Inventors: 刘工勤
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-23
Filing date: 2014-04-23
Publication date: 2014-08-20
Anticipated expiration: 2024-04-23

Abstract

The utility model relates to a valve, particularly relates to a micro-force switch valve with a stop function, and solves the technical problem that a conventional micro-force valve does not have the stop function. The micro-force switch valve with the stop function comprises a valve body, a piston cylinder, a flow inlet cavity and a flow outlet cavity, wherein a valve inlet is formed between the flow inlet cavity and the flow outlet cavity; a valve clack at the lower end of a valve rod and the valve inlet are mutually opened and closed in a matched manner, and a piston at the upper end and the inner wall of the piston cylinder are glidingly matched; a channel hole is formed in the valve rod; an inlet and outlet through hole is formed in the non-central-hole position of a lower end cover; a micro-force valve plug provided with a rotary knob at the top is arranged on a micro-flow channel which can be used for communicating the flow outlet cavity with an upper piston cavity; a side outlet is formed in a side wall of the valve rod and below an upper valve rod inlet and is used for communicating the channel hole with the upper piston cavity; a valve rod valve plug for opening and closing the side outlet is glidingly arranged in the channel hole; and a spring is connected between the upper part of the piston and the lower end of a valve cover. The valve has the automatic stop function, is light, handy and labor-saving, easy to position and reliable in performance, and has low probability of rusting.

Description

Micro-power switch valve with check function

Technical field

The utility model relates to valve, is specially a kind of micro-power switch valve with check function.

Background technique

For controlling the valve of fluid flow, mostly all by the lifting of handwheel band ovable valve stem, realize switch in the market, the shortcoming of its existence is to open and close trouble, and the rotation number of turns is many, and manipulation strength is large, and valve aperture is larger, and handwheel is also larger, and switch is wasted time and energy.In prior art, publication number is that the utility application of CN 103322207A discloses a kind of micro-power switch valve, this valve adopts the switching that very little power just can regulating valve, but this valve has an obvious shortcoming, exactly when the current of influent stream mouth stop suddenly, the switching of valve cannot be effectively controlled, and the water capacity in outlet conduit easily flows backwards, affect the normal operation of whole supply channel, therefore in the urgent need to a kind of, there is automatic braking function and can realize the valve that micro-power opens and closes simultaneously.

Summary of the invention

The utility model does not possess the technical problem of automatic braking function for solving current micro-power valve, a kind of micro-power switch valve with check function is provided.

The utility model is to adopt following technological scheme to realize: a kind of micro-power switch valve with check function, and comprise valve body, piston cylinder, influent stream chamber, go out to flow chamber, between Yu Chuliu chamber, influent stream chamber, offer import in valve; Valve rod lower end flap opens and closes and is equipped with mutually with the interior import of valve, the setting that is slidably matched of upper end piston and piston cylinder inwall, valve rod inside is provided with port hole, and the position that is positioned at non-central hole on lower end cap has turnover through hole, and the microchannel that can be communicated with stream chamber and upper piston chamber is provided with micro-power valve plug; Valve rod sidewall has side outlet communicating passage hole and upper piston chamber below valve rod upper inlet, slides and be provided with the valve rod valve plug that opens and closes side outlet in port hole; Between piston top and valve gap lower end, be connected with spring.

Piston is divided into upper piston chamber 12 and lower piston chamber 13 by piston cavity.During use, the micro-power switch valve with check function described in the utility model is connected in pipeline, fluid enters influent stream chamber by influent stream mouth 26, by import in valve, flap is boosted, by going out head piece 27, flow out, fluid backs down valve rod valve plug by the port hole of valve rod simultaneously, make fluid enter piston upper chamber by side outlet, and flow out by going out head piece through microchannel.When needs are during by this valve closing, as long as micro-power valve plug is moved down knob, microchannel is closed, at this moment the fluid being entered by stem side outlet promotes piston downwards, makes flap move down simultaneously import in valve is closed, and at this moment whole valve is in closed condition.

If this valve is when opening running state, fluid cut is entered by influent stream mouth, reflux fluid will return from going out the pipeline of head piece connection, at this moment micro-power valve plug is opening state, microchannel and turnover through hole have fluid to enter simultaneously, there is the fluid returning in upper piston chamber and lower piston chamber simultaneously, valve rod valve plug down sliding under the effect of upper piston chamber fluid seals side outlet, fluid can not flow through valve stem passage hole, upper and lower piston cavity hydrodynamic pressure equates, piston is in state of equilibrium, spring resets gradually, piston moves down under the thrust of spring, at this moment the pressure that reflux fluid acts on flap top can increase gradually, then flap is to pressing to import in cut-off valve, at this moment this valve is in closed condition, realized automatically closing of when influent stream mouth stops valve.

Advantage of the present utility model: 1, inner flow passage (valve rod valve plug and side outlet) is as stop valve, it acts on alternative general-purpose gate valve, stop valve and other switch valve, and do not need effort operation, only need very little power (as the strength of three fingers only) just can realize and easily close and open, greatly reduce labor strength.

2, on valve, there is no handwheel, only have a micro-power valve plug, rely on special internal structure to control its fluid turnover and be subject to force homeostasis, be convenient to adjust flux until standard-sized sheet or complete shut-down.

3, without exposing valve rod and seal arrangement thereof, all controlling componenies are all placed in valve body, are not afraid of corrosion, even if valve body is all placed in medium, also do not affect use.

4, to be subject to force homeostasis be a stationary process for valve inner fluid turnover, to impact of water hammer, has obvious alleviation to reduce, and its effect is equivalent to buffer valve.

This valve is without exposing valve rod and seal arrangement thereof, avoided the leak generation of situation of common Middle pressure valve packing.This valve can substitute check valve and use, and has reduced the input cost that check valve is installed and used, and has reduced maintenance procedure and cost, has also improved safe operation coefficient.This valve is applicable to as the adjusting control valve of flowing medium, install and use on the pipe networks such as every profession and trade plumbing, heating, mesohigh combustion gas, alternative gate valve play in break-make or regulating action, particularly station switch frequently important critical valves, by the handwheel switch large valve of labor intensity of wasting time and energy; Use this valve lightly laborsaving, easily location.Reliable performance, and be difficult for corrosion.Can level or at right angle setting, all enter on the fluid line that valve pressure is greater than 5m water column all can use.

Accompanying drawing explanation

The structural representation during water outlet of Fig. 1 the utility model.

Structural representation during Fig. 2 the utility model backwater.

The structure for amplifying schematic diagram of A in Fig. 3 Fig. 2.

The structural representation of Fig. 4 microchannel.

1-valve body, 2-piston cylinder, 3-influent stream chamber, 4-goes out to flow chamber, import in 5-valve, 6-valve rod, 7-flap, 8-piston, 9-port hole, 10-lower end cap, 11-passes in and out through hole, 12-upper piston chamber, 13-lower piston chamber, 14-valve rod valve plug, 15-side outlet, 16-valve rod upper inlet, import in 17-valve rod, the micro-power valve plug of 18-, 19-knob, 20-the first hole, 21-first passage, 22-second channel, the micro-power valve opening of 23-, 24-valve gap, 25-spring, 26-influent stream mouth, 27-goes out head piece.

Embodiment

With a micro-power switch valve for check function, comprise valve body 1, piston cylinder 2, influent stream chamber 3, go out to flow chamber 4, influent stream chamber 3 and go out to flow to offer between chamber 4 import 5 in valve; Valve rod 6 lower end flaps 7 open and close and are equipped with mutually with the interior import 5 of valve, the setting that is slidably matched of upper end piston 8 and piston cylinder 2 inwalls, valve rod 6 inside are provided with port hole 9, the position that is positioned at non-central hole on lower end cap 10 has turnover through hole 11, can be communicated with stream chamber 4 and be provided with micro-power valve plug 18 with the microchannel in upper piston chamber 12; Valve rod 6 sidewalls have side outlet 15 communicating passage holes 9 and upper piston chamber 12 below valve rod upper inlet 16, and the interior slip of port hole 9 is provided with the valve rod valve plug 14 that opens and closes side outlet 15; Between piston 8 tops and valve gap 24 lower ends, be connected with spring 25.

Port hole 9 in described valve rod 6 is communicated with the two ends up and down of valve rod 6; The stage casing internal diameter that port hole 9 is arranged in piston 8 tops shrinks formation valve rod import 17, and port hole 9 upper end-hole are shunk and formed valve rod upper inlets 16; Described side outlet 15 is arranged in valve rod import 17 communicating passage holes, top 9 and upper piston chamber 12; Valve rod valve plug 14 slides and is limited in valve rod between import 17 and valve rod upper inlet 16; The diameter of valve rod valve plug 14 is greater than import 17 and valve rod upper inlet 16 internal diameters in valve rod.

Described microchannel comprises out the first hole 20 being connected with upper piston chamber 12 at valve gap 24 lower end walls, opens the first passage 21 being connected with the first hole 20 in valve gap 24 and open the second channel 22 that the Yu Chuliu chamber, lower end 4 in piston cylinder 2 sidewalls is connected; The upper end-hole of second channel 22 is connected with first passage 21; Valve gap 24 position corresponding with second channel 22 has micro-power valve opening 23, with micro-power valve plug 18 of knob 19, is located in micro-power valve opening 23, as shown in Figure 4.

Fig. 1 is the structural representation of the utility model when normal work, fluid is flowed into by influent stream mouth 26, flap 7 is backed down, fluid enters upper piston chamber 12 through port hole 9 simultaneously, realized the transient equiliblium of upper and lower piston cavity, spring 25 is compressed, by micro-power valve plug 18, just can control the size of flow and the break-make of valve; Arrow points is fluid flow direction.Fig. 2 is the influent stream mouth fluid structural representation that valve is closed automatically while stopping flowing, going out to flow chamber 4 fluids refluxes, fluid in upper piston chamber 12 pushes closed channel hole 9 by valve rod valve plug 14, the pressure of the fluid that piston 8 is subject to is up and down realized balance, now piston 8 moves down under spring 25 thrust, drive flap 7 by 5 sealings of import in valve, reflux fluid just cannot be back to influent stream chamber, has realized automatically and having closed.

As shown in Figure 3, port hole 9 is positioned at valve rod 6 upper end-hole place internal diameters and shrinks formation valve rod upper inlet 16, in valve rod, import 17 upper end portions are equivalent to form a limit dais, and valve rod valve plug 14 slides up and down between import 17 in valve rod upper inlet 16 and valve rod, and closely cooperate with port hole 9 inwalls; Side outlet 15 is arranged on the sidewall in valve rod import 17 upper channel holes 9, when valve rod valve plug 14 is positioned at below, by the 17 upper end-hole sealings of import in valve rod, is equivalent to side outlet 15 and port hole 9 sealings; Fluid is upwards flowed through port hole 9 by influent stream chamber 3, and valve rod valve plug 14 is upwards promoted, and valve rod valve plug 14 moves up to the lower end mouth of valve rod upper inlet 16, has opened side outlet 15 simultaneously, and port hole 9 has just been realized and being communicated with upper piston chamber 12.When influent stream mouth 26 flows into without fluid suddenly, the fluid that goes out head piece 27 just refluxes, wherein be back to the fluid in upper piston chamber 12 from the flow channel hole, top 9 of valve rod upper inlet 16, valve rod valve plug 14 is depressed side outlet 15 sealings, by upper piston chamber 12 and 3 sealings of influent stream chamber.

Claims

1. with a micro-power switch valve for check function, comprise valve body (1), piston cylinder (2), influent stream chamber (3), go out to flow chamber (4), influent stream chamber (3) and go out to flow and between chamber (4), offer import (5) in valve; It is characterized in that, valve rod (6) lower end flap (7) opens and closes and is equipped with mutually with the interior import (5) of valve, the setting that is slidably matched of upper end piston (8) and piston cylinder (2) inwall, valve rod (6) inside is provided with port hole (9), the position that is positioned at non-central hole on lower end cap (10) has turnover through hole (11), can be communicated with stream chamber (4) and be provided with micro-power valve plug (18) with the microchannel in upper piston chamber (12); Valve rod (6) sidewall has side outlet (15) communicating passage hole (9) and upper piston chamber (12) in valve rod upper inlet (16) below, slides and be provided with the valve rod valve plug (14) that opens and closes side outlet (15) in port hole (9); Between piston (8) top and valve gap (24) lower end, be connected with spring (25).

2. the micro-power switch valve with check function as claimed in claim 1, is characterized in that, the port hole (9) in described valve rod (6) is communicated with the two ends up and down of valve rod (6); The stage casing internal diameter that port hole (9) is arranged in piston (8) top shrinks formation valve rod import (17), and port hole (9) upper end-hole is shunk and formed valve rod upper inlet (16); Described side outlet (15) is arranged in communicating passage hole, valve rod import (17) top (9) and upper piston chamber (12); Valve rod valve plug (14) slides and is limited between import in valve rod (17) and valve rod upper inlet (16); The diameter of valve rod valve plug (14) is greater than import in valve rod (17) and valve rod upper inlet (16) internal diameter.

3. the micro-power switch valve with check function as claimed in claim 1 or 2, it is characterized in that, described microchannel comprises out the first hole (20) being connected with upper piston chamber (12) at valve gap (24) lower end wall, opens the first passage (21) being connected with the first hole (20) in valve gap (24) and open the second channel (22) that the Yu Chuliu chamber, lower end (4) in piston cylinder (2) sidewall is connected; The upper end-hole of second channel (22) is connected with first passage (21); Valve gap (24) position corresponding with second channel (22) has micro-power valve opening (23), with micro-power valve plug (18) of knob (19), is located in micro-power valve opening (23).