CN205155268U - Vertical check valve - Google Patents

Abstract

The utility model discloses a vertical check valve, a difficult problem that aim at solving vertical check valve and be difficult to to dismantle, use cost is high, its technical scheme main points are vertical check valve, including the valve body, with valve body fixed connection's disk seat and mount, valve block, with valve block fixed connection's valve rod and spring, the through -hole has been seted up on the mount, the valve rod passes the through -hole setting, the diameter of valve block slightly is less than the diameter of valve body inner chamber, the spring cup joints on the valve rod, the spring butt is on mount and valve block, valve body inner chamber joint has easily disassembles, it conflicts with the mount easily to disassemble is connected, easily disassemble top fixedly connected with clamp ring, the clamp ring sets up with the valve body is perpendicular, valve body end still is provided with pressing blade, the last ring groove that has seted up of pressing blade, ring groove cooperatees with the clamp ring. The utility model relates to a vertical check valve easily dismantles, use cost low.

Description

A kind of Vertical Lift Check Valves

Technical field

The utility model relates to valve field, and more particularly, it relates to a kind of Vertical Lift Check Valves.

Background technique

Vertical Lift Check Valves: due to the pressure effect of entrance point medium in pipeline, and against the force of the spring makes valve opening or closedown.When entrance point pressure medium is lower than outlet end, spring is pushed spool to valve seat and makes valve closing, stops medium counter flow, therefore plays non-return effect.Vertical Lift Check Valves is widely used in the industries such as chemical industry, liquefied petroleum gas (LPG), fluid.Safety check divides by structure, can be divided into Lift check valve, Swing check valve and butterfly check valve three kinds.

At present, market there is a Authorization Notice No. a kind of Vertical Lift Check Valves disclosed in the Chinese patent of CN202371224U, its working principle is: a kind of Vertical Lift Check Valves, comprise valve body and valve gap, valve seat is provided with in valve body, valve seat is configured with flap, flap is configured with the elasticity reset device impelling it to reset towards valve seat, described elasticity reset device comprises support, positioning rod and spring, carriage center is with jack, support is fixed on valve body, described positioning rod upper end is inserted in jack, described flap is fixed on the lower end of positioning rod, the diameter of flap is slightly less than the diameter of body cavity, described spring housing connects on the securing lever, the two ends of spring withstand on support and flap respectively.Namely between valve body and valve gap, valve seat is installed, valve seat there is flap, and flap is connected with elasticity reset device, wherein elasticity reset device includes the positioning rod connecting this flap, be fixedly connected on the support on valve body and spring, its medium-height trestle there is jack, overlap the positioning rod of then spring through jack, spring is between support and flap, like this when current flow below flap, the pressure of current is that flap is fetched boiling water and flowed through, after current flow through, flap returns to original closing position under the action of the spring, valve body is closed the outflow preventing current, thus current are served to the effect of non-return.

But the valve seat of this valve body is fixedly connected with valve body, like this when the increase along with access times, and causing after the aging or spring of flap reduces, it is not good that valve body there will be working state, and can not carry out keeping in repair or changing, finally cause whole valve body to abandon, cause damage.

Therefore, need to propose a kind of new scheme and solve the problems referred to above.

Model utility content

For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of Vertical Lift Check Valves being easy to dismantle, user cost is low.

For achieving the above object, the utility model provides following technological scheme: a kind of Vertical Lift Check Valves, comprise valve body, the valve seat be fixedly connected with valve body and fixing frame, valve block, the valve rod be fixedly connected with valve block and spring, described fixing frame offers through hole, described valve rod is arranged through through hole, the diameter of described valve block is slightly less than the diameter of body cavity, described spring housing is connected on valve rod, described spring is connected on fixing frame and valve block, described body cavity is connected with easily disassembles, described easily disassemble to conflict with fixing frame be connected, described top of easily disassembling is fixedly connected with hold-down ring, described hold-down ring is vertical with valve body to be arranged, described valve end is also provided with clamping piece, described clamping piece offers annular recess, described annular recess matches with hold-down ring.

Pass through technique scheme, when current act on valve block below valve block, valve block is extruded and is separated with valve seat, and current are flow through around valve block, after current flow through, valve block returns to valve seat place under the action of the spring and contacts with valve seat, thus prevents current to flow down above valve block; When valve block or spring impaired or aging after, by opening clamping piece, clamping piece is separated with hold-down ring, thus can takes out easily disassembling in valve body, after taking-up, spring and valve block taken out maintenance or change, and do not need valve body to give up, save user cost.

Further, described easily disassembling also is provided with diaphragm seal between valve interior wall.

By technique scheme, when current flow through, easily disassemble and be provided with diaphragm seal between valve body, thus prevent current to flow away between valve body from easily disassembling.

Further, described fixing frame and be provided with buffer layer between easily disassembling.

Pass through technique scheme; along with the fluxion strap moving valve plate of current moves; the transmission moving through spring of valve block; also and between easily disassembling there is certain extruding in the active force making fixing frame be subject to certain change; when fixing frame and when being provided with buffer layer between easily disassembling; buffer layer can reduce fixing frame and force strength between easily disassembling, and commute is disassembled and served protective action with fixing frame, extends its working life.

Further, the stepped setting in described fixing frame top.

Pass through technique scheme, when current are when flowing, often can there is certain turning to and pulse, these turn to and after fixing frame, make fixing frame that certain skew occurs with impulse action, and collide with valve interior wall, valve block produces certain active force to valve rod simultaneously, and when arranging with the fixing frame of easily disassembling clamping is stepped, fixing frame perisporium is all connected with easily disassembling to conflict, this makes it possible to effectively prevent fixing frame from shaking, not only increase the stability of valve body, and also position is relatively stable between fixing frame and valve rod, protective action is served to valve rod.

Further, the second buffer layer is provided with between described valve block and valve seat.

Pass through technique scheme; valve block with in the process being separated and closing up of valve seat all can and valve seat between produce certain collision; certain infringement is all had to valve seat and valve block; when being provided with the second buffer layer between valve block and valve seat; effectively can reduce the active force between valve block and valve seat, thus protective action is served to valve block and valve seat.

Further, also seal ring is provided with between described valve block and valve seat.

By technique scheme, when being provided with seal ring between valve block and valve seat, can effectively preventing current from flowing backwards, improve the quality of valve body work.

Accompanying drawing explanation

Fig. 1 is the explosive view schematic diagram of the present embodiment;

Fig. 2 is the erection drawing of the present embodiment;

Fig. 3 is the sectional view in A-A direction in Fig. 2.

In figure: 1, valve body; 2, valve seat; 3, valve block; 4, valve rod; 5, spring; 6, fixing frame; 7, easily disassemble; 8, hold-down ring; 9, clamping piece.

Embodiment

Referring to figs. 1 through Fig. 3, a kind of Vertical Lift Check Valves of the utility model is described further.

As depicted in figs. 1 and 2, be fixedly connected with bottom valve body 1 with valve seat 2, can be threaded, wherein valve seat 2 be also provided with annular projection, and projection is arranged in valve body 1 inner chamber; Be provided with valve block 3 and valve rod 4 in valve body 1 inner chamber, wherein valve rod 4 is fixedly connected with valve block 3, can be one-body molded, and its middle valve plate 3 is less than valve body 1 inner chamber and conflicts with the projection in lower seat 2 and is connected; Valve rod 4 above valve block 3 is arranged with spring 5, and spring 5 one end is connected on valve block 3, and the other end is connected on fixing frame 6, and wherein the ring-type of fixing frame 6 in center with through hole is arranged, and valve rod 4 is through through hole, as shown in Figure 3; The stepped setting in fixing frame 6 edge, the larger ladder in bottom is connected to valve body 1 inner chamber chamber wall, less stepped be connected to the side of being located thereon easily disassemble bottom 7, and the shape of easily disassembling bottom 7 matches with fixing frame 6, easily disassemble 7 to conflict with valve body 1 inwall and be connected, wherein easily disassembling 7 can be made up of stainless steel material; Being fixedly connected with hold-down ring 8 easily disassembling 7 tops, can be one-body molded, and hold-down ring 8 is vertical with easily disassembling 7 arranges; Valve body 1 top offers groove, and the matching form of the shape of groove and hold-down ring 8 closes; Above valve body 1, be also provided with clamping piece 9, wherein clamping piece 9 is fixedly connected with valve body 1, can be bolted, and be positioned at easily disassemble 7 above and conflict with hold-down ring 8 and be connected.

When work, current flow to valve body 1 from through valve seat 2 below valve seat 2, now current produce certain pressure effect to valve block 3, and valve block 3 is moved upward and Compress Spring 5, be separated with the convex portion of valve seat 2 after valve block 3 moves upward, thus the through hole of valve seat 2 is connected with the through hole of valve body 1 inner chamber, current are from flowing through here, and by fixing frame 6 with easily disassemble 7 outflow valve bodies 1, after current flow through, valve block 3 moves downward under the elastic acting force of spring 5, and valve block 3 is pressed on valve seat 2, thus blocked being communicated with of valve seat 2 and valve body 1 inner chamber, current are prevented to flow out, thus serve the effect of a non-return, after fixing frame 6 or spring 5 are damaged or are aging, by valve body 1 is separated with clamping piece 9, axially take out along valve body 1 and easily disassemble 7 thus spring 5 and fixing frame 6 can be taken out, carry out changing or this maintenance, not only be easy to dismounting, and can again come into operation after maintenance, user cost is low.Moreover, the stepped setting of fixing frame 6 perisporium, and easily disassemble 7 bottoms and fixing frame 6 matching form closes, like this when fixing frame 6 is subject to the effect of current and produces certain rocking in the horizontal direction, stair-stepping fit shapes makes fixing frame 6 also receive the conflict effect of easily disassembling 7 in the horizontal direction, and prevent it to shake, so not only ensure that the stability of flow, and fixing frame 6 position relatively stable time, also maintain the relatively stable of valve rod 4 and valve block 3 simultaneously, such valve rod 4 just can not be subject to the twisting force from fixing frame 6 substantially horizontal, protective action is served to valve rod 4.More preferred, also be provided with diaphragm seal easily disassembling between 7 and valve body 1 inwall, like this when current are by valve body 1, diaphragm seal can effectively prevent current from flowing out from easily disassembling between 7 and valve body 1, prevent the waste of current, improve the workmanship of valve body 1.

Moreover, be provided with buffer layer at fixing frame 6 and between easily disassembling 7, be provided with the second buffer layer between valve block 3 and valve seat 2, wherein buffer layer can be nontoxic rubber.When current flow through and prevent current from refluxing, capital causes fixing frame 6 and easily disassembles between 7 and produces certain pressure effect, when being provided with buffer layer when fixing frame 6 and between easily disassembling 7, an effect cushioned can be played to fixing frame 6 and the pressure effect of easily disassembling between 7, the two is made to carry out a soft contact, thus to fixing frame 6 with easily disassemble 7 and play a protective action; Moreover; valve block 3 with the process of separating with closing up of valve seat 2 in all can produce certain collision with valve seat 2; when being provided with the second buffer layer between valve block 3 and valve seat 2, effectively can reducing the effect of colliding, protective action is served to valve block 3 and valve seat 2.

Certainly, also between valve block 3 and valve seat 2, also seal ring can be provided with.Like this when valve block 3 carries out non-return time, can prevent current from flowing out between valve block 3 and valve seat 2, improve the sealing of valve body 1, prevent the loss of current.By these technical sides above-mentioned by the object that this Vertical Lift Check Valves just can be made to reach be easy to dismantle, user cost is low.

The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (6)

1. a Vertical Lift Check Valves, comprise valve body (1), the valve seat (2) be fixedly connected with valve body (1) and fixing frame (6), valve block (3), the valve rod (4) be fixedly connected with valve block (3) and spring (5), (6) offer through hole to described fixing frame, described valve rod (4) is arranged through through hole, the diameter of described valve block (3) is slightly less than the diameter of valve body (1) inner chamber, described spring (5) is socketed on valve rod (4), described spring (5) is connected on fixing frame (6) and valve block (3), it is characterized in that: described valve body (1) inner chamber is connected with easily disassembles (7), conflict with fixing frame (6) and be connected in described easily disassemble (7), described (7) top of easily disassembling is fixedly connected with hold-down ring (8), described hold-down ring (8) is vertical with valve body (1) to be arranged, described valve body (1) end is also provided with clamping piece (9), (9) offer annular recess to described clamping piece, described annular recess matches with hold-down ring (8).

2. a kind of Vertical Lift Check Valves according to claim 1, is characterized in that: described easily disassembling between (7) and valve body (1) inwall is also provided with diaphragm seal.

3. a kind of Vertical Lift Check Valves according to claim 1, is characterized in that: described fixing frame (6) and easily disassemble between (7) and be provided with buffer layer.

4. a kind of Vertical Lift Check Valves according to claim 1, is characterized in that: the stepped setting in described fixing frame (6) top.

5. a kind of Vertical Lift Check Valves according to claim 1, is characterized in that: be provided with the second buffer layer between described valve block (3) and valve seat (2).

6. a kind of Vertical Lift Check Valves according to claim 1 or 5, is characterized in that: be also provided with seal ring between described valve block (3) and valve seat (2).