CN2851769Y - Integrated check valve - Google Patents

Abstract

The utility model provides an integrated check valve, which comprises a main valve body and a flow channel, wherein the flow channel is provided with a backstop device which comprises a countercheck part and a valve plate. The countercheck part is arranged on the inner wall of the flow channel. The valve plate is adjacent to the countercheck part and is pivotally fixed on the peak of the countercheck part corresponding to the inner wall of the flow channel. When the fluid stops forward flow or reflows in a reverse direction, the valve plate is abutted on the countercheck part in order to close the channel through which the fluid flows. The main valve body of the utility model can be one of various valves, such as a ball valve, or a gate valve, etc. The integrated check valve adopting the design is equivalent to one of various valves, such as the ball valve, or the gate valve, etc., which have backstop effect and has simple structure. In practical use, the check valve is has reliable operation, stable performance and low possibility of malfunction. The utility model can be suitable for the pressure grades of various kinds of strength, and simultaneously can be applied to occasions requiring strict performance and expenses in failure elimination are reduced.

Description

One-piece type safety check

Technical field

The utility model relates to a kind of one-piece type safety check, specifically, relate to a kind of in pipeline, can be to medium conducting when postive direction flows, the one-piece type safety check that ends when flowing in the other direction.

Background technique

Just present several frequently seen safety check mainly contains flap valve, ball check valve etc. from see in form.Wherein, the problem of exist in leaking often undesirable to the flap valve sealing effect.And general general ball check valve as shown in Figure 1, fixed support 14 ' in the housing 11 ' of safety check 1 ' and reverse stopping ball baffle plate 13 ' constitute a cantilevered structure, when liquid under the certain pressure with certain speed when safety check 1 ' import 15 ' enters valve body, impact reverse stopping ball 12 ', reverse stopping ball 12 ' is in the effect of hydraulic shock power, the radially position-limiting action of fixed support 14 ', under the axial limiting effect of reverse stopping ball baffle plate 13 ', be close to reverse stopping ball baffle plate 13 ', liquid flows out the outlet 16 ' of safety check 1 ' in the hole of valve body space and reverse stopping ball baffle plate 13 ', thereby plays the conducting effect; When liquid oppositely flows into from exporting 16 ', under the radially position-limiting action of reverse stopping ball 12 ' same impact force action, fixed support 14 ', the axial limiting effect of reverse stopping ball baffle plate 13 ', be close to valve body import 15 ', thereby play by effect at liquid.In this structure, safety check 1 ' cooperates with ball valve, gate valve if desired as an integrated member, then needs two valves of branch body structure, complex structure.And under this structure, owing to the impact of current, the 13 ' meeting of ball baffle plate produces bigger vibration after the water flowing, and the cantilever structure that stuck phenomenon and ball baffle plate 13 ' and fixed support 14 ' composition take place easy and reverse stopping ball 12 ' is thrust easily.Figure 2 shows that the schematic representation that cantilever structure that ball baffle plate 13 ' and fixed support 14 ' are formed is thrust, Figure 3 shows that the partial enlarged drawing of stuck phenomenon takes place for ball baffle plate 13 ' and reverse stopping ball 12 '.

Summary of the invention

The purpose of this utility model is, a kind of one-piece type safety check is provided, and overcomes existing safety check and cooperates with other valve bodies and need employing split type, and complex structure easily produces the technical problem of fault.

In order to achieve the above object, the technical solution of the utility model is as follows:

A kind of one-piece type safety check comprises valve body and runner; Be characterized in, be provided with backstop in the runner; Described backstop comprises stop part and valve block; Described stop part is arranged on the runner inner wall; Described valve block is with this stop part adjacency and articulate fixing in the relative runner inner wall of its peak.

The valve body of one-piece type safety check of the present utility model can be various valves such as ball valve or gate valve, and backstop and valve body adopt the integral type design.Adopt the as above safety check of design, be equivalent to have various valves such as the ball valve of non-return effect or gate valve, simple in structure.In actual use, this safety check reliable in action, stable performance, the possibility that breaks down is low; The pressure rating that can adapt to multiple intensity also can be applicable to the comparatively strict occasion of performance requirement simultaneously, and can reduce the expense when fixing a breakdown.

Described backstop has a disc valve block that is complementary with the runner inner wall cross section.The valve block peak can directly be fixedly attached on the runner, also can be in the following way: be provided with a support in the runner, articulate with described valve block peak; This support by dowel fixes on runner inner wall.When the fluid positive flow through the time, valve block is subjected to impact force and around upwards upset of fulcrum, thereby opens the passage of flowing through, and plays the effect of conducting; When fluid stops to flow or during reverse reflux, valve block is resisted against around the fulcrum reverse flip on the stop part of support owing to gravity or reverse impact power, thereby closes the passage of flowing through, and plays the effect that ends.

The valve block of described backstop also can be arc-like sheet, and its arc is designed to valve block when closing, and this arc-like sheet passes through mutually with runner inner wall, and valve block is when being opened to maximum position, the structure that this arc-like sheet and runner inner wall are fitted fully.The valve rod of valve body is provided with slotted eye, and valve block is provided with mounting hole, is equipped with elastic component in the mounting hole, and this elastic component penetrates slotted eye, is fixed in the slotted eye by outside tension force, thereby valve block is connected with valve handle activity.Valve block can wear rotated position around elastic component.When the fluid positive flow through the time, valve block is subjected to impact force and around upwards upset of mounting hole, thereby opens the passage of flowing through, and plays the effect of conducting; When fluid stops to flow or during reverse reflux, valve block is resisted against on the arc protuberance that runner inner wall and this valve block shape fit like a glove around the mounting hole reverse flip owing to gravity or reverse impact power, thereby closes the passage of flowing through, and plays the effect that ends.

Also can be connected like this between this arc valve block and runner: runner inner wall is provided with a support, and one is extended with the hook-type link on the support, and valve block is provided with mounting hole, and the hook-type link penetrates mounting hole, and valve block is fixed on the support.Valve block can wear rotated position around the hook-type link.When the fluid positive flow through the time, valve block is subjected to impact force and around upwards upset of mounting hole, thereby opens the passage of flowing through, and plays the effect of conducting; When fluid stops to flow or during reverse reflux, valve block is resisted against on the support around the mounting hole reverse flip owing to gravity or reverse impact power, thereby closes the passage of flowing through, and plays the effect that ends.

Also rubber gasket can be established in case leak-stopping water between valve block and the runner inner wall.This can by valve block and stop part against one side establish rubber spacer; Perhaps have annular groove, seal ring is installed in the groove is realized at rack inner wall.

Since this arc valve block when being opened to maximum position, can fit fully with runner inner wall, thereby after being subjected to fluid impact, after this arc valve block is upwards dug runner is opened to greatest extent, unblocked.Avoided circular valve block can not open the defective of runner fully.

Description of drawings

Fig. 1 is the structural representation of the ball check valve of prior art;

Fig. 2 is the schematic representation that the ball baffle plate of ball check valve of prior art and cantilever structure that fixed support is formed are thrust;

Fig. 3 is the ball baffle plate of ball check valve of prior art and the partial enlarged drawing of check valve generation stuck phenomenon;

Fig. 4 is the structural drawing of first embodiment's of the present utility model one-piece type safety check;

Fig. 5 is the backstop of one-piece type safety check among Fig. 4 and the assembling exploded view of valve body;

Fig. 6 is the enlarged diagram of the backstop of one-piece type safety check among Fig. 4;

Fig. 7 is the second embodiment's of the present utility model structural drawing of one-piece type safety check under opening state;

Fig. 8 is the second embodiment's of the present utility model structural drawing of one-piece type safety check under closed state;

Fig. 9 is the structural drawing of the 3rd embodiment's of the present utility model one-piece type safety check;

Figure 10 is the enlarged diagram of the backstop of one-piece type safety check among Fig. 9;

Figure 11 is the assembling decomposing schematic representation of Fig. 9;

Figure 12 is the plan view of Figure 11;

Figure 13 is the structural drawing of the 4th embodiment's of the present utility model one-piece type safety check;

Figure 14 is the enlarged diagram of the backstop of one-piece type safety check among Figure 13;

Figure 15 is the assembling decomposing schematic representation of Figure 14;

Figure 16 is the plan view of Figure 15.

Embodiment

For the ease of understanding 26S Proteasome Structure and Function of the present utility model better, be elaborated below in conjunction with Fig. 4 to Figure 19.

Fig. 4 is the structural drawing of first embodiment's of the present utility model one-piece type safety check.Fig. 5 is the backstop of safety check among Fig. 4 and the assembling exploded view of valve body.As shown in Figure 4 and Figure 5, safety check of the present utility model comprises valve body and runner 18, and this valve body is a ball valve 11.Be integrally formed with backstop in the ball valve 11, backstop comprises support 12, internal diameter stop part 17 and the valve block 14 less than runner 18 inwalls.Support 12 is fixed on runner 18 inwalls of ball valve 11 by pin 13.The peak place is provided with and connects fulcrum 15 on valve block 14, articulates by this fulcrum 15 and support 12, and valve block 14 can rotate around this fulcrum 15.At rack inner wall open loop connected in star, embed O-RING seal ring 16 at the groove position before the assembling, prevent to assemble the leakage that back poppet 12 sides produce.Also can valve block 14 and stop part 17 against one side be provided with rubber spacer 19.To strengthen obturation effect and to have the ability of better preventing backflow.

Consult Fig. 6, valve block 14 is discs that brass that the runner 18 with ball valve 11 is complementary is made.Connect the peak place that fulcrum 15 is located at valve block 14.When the fluid positive flow through the time, valve block 14 is subjected to impact force and around upwards upset of fulcrum 15, thereby opens runner 18, plays the effect of conducting; When fluid stops forward flow, valve block 14 can abut on the stop part 17 of support 12 around fulcrum 15 reverse flip owing to gravity, if fluid produces reverse reflux, valve block 14 is subjected to reverse impact power and also can abuts on the stop part 17 of support 12 around fulcrum 15 reverse flip, thereby when fluid does not have forward flow, close runner 18, play the effect that ends.This kind safety check is applied to big caliber occasion, simplifies the structure, and has saved material.

Fig. 7 is the second embodiment's of the present utility model structural drawing of one-piece type safety check under opening state.Fig. 8 is the second embodiment's of the present utility model structural drawing of safety check under closed state.As shown in Figure 7 and Figure 8, safety check of the present utility model also comprises backstop, and this backstop and first embodiment are basic identical, also comprises support 22, internal diameter stop part 27 and the valve block 24 less than runner 28 inwalls.The peak place is provided with and connects fulcrum 25 on the valve block 24, articulates by this fulcrum 25 and support 22, and valve block 24 can rotate around this fulcrum 25.Different with first embodiment be in, the valve body of this safety check is a gate valve 21.When the fluid positive flow through the time, valve block 24 is subjected to impact force and around upwards upset of fulcrum 25, thereby opens runner 28, plays the effect of conducting; When fluid stops forward flow, valve block 24 can abut on the stop part 27 of support 22 around fulcrum 25 reverse flip owing to gravity, if fluid produces reverse reflux, valve block 24 is subjected to reverse impact power and also can abuts on the stop part 27 of support 22 around fulcrum 25 reverse flip, thereby when fluid does not have forward flow, close runner 28, play the effect that ends.In order to strengthen obturation effect, also can valve block 24 and stop part 27 against one side be provided with rubber spacer 29, and have the ability of better anti-backflow.

In view of above two kinds of embodiments, its valve block all is subjected to the restriction of fulcrum 15 between its fulcrum and runner inner wall or support or 25 and can not opens fully when valve opening, thus the flowing of limit fluid, thereby the utility model provides the 3rd embodiment.As shown in Figure 9, the backstop that is integrally formed with in the safety check comprises arc valve block 34.Arc valve block 34 upper ends and valve rod 31 flexibly connect, and when this valve block 34 was closed, this arc-like sheet passed through mutually with the inwall of runner 38, and the arc protuberance 37 that fits like a glove with this arc plate shape on runner 38 inwalls is close at its edge, plays the effect that prevents fluid reflux preferably; When valve block was opened to maximum position, the arc convex surface of this arc-like sheet and runner 38 inwalls were fitted fully, have reduced the resistance of runner to greatest extent, have increased the area of runner.

Figure 10 is the enlarged diagram of the backstop of safety check among Fig. 9.Figure 11 is the assembling decomposing schematic representation of Fig. 9.Figure 12 is the plan view of Figure 11.As Figure 10, Figure 11 and shown in Figure 12, valve rod 31 is provided with four slotted eyes 35, valve block 34 is provided with former and later two mounting holes 36, be equipped with an end of U-shaped elastic component 33 in the mounting hole 36, these elastic component 33 two ends all penetrate slotted eye 35, be fixed in the slotted eye 35 by outside tension force, valve block 34 is fixed on the valve rod 31.Mounting hole 36 is positioned at the peak place of hemisphere valve block 34.When the fluid positive flow through the time, valve block 34 is subjected to impact force and around upwards upset of mounting hole 36, thereby opens runner 38, plays the effect of conducting; When fluid stops forward flow, valve block 34 can be fitted with runner 38 inwall arc protuberances 37 around mounting hole 36 reverse flip fully owing to gravity, if fluid produces reverse reflux, valve block 34 is subjected to reverse impact power and also can fits fully to runner 38 inwall arc protuberances 37 around mounting hole 36 reverse flip, thereby when fluid does not have forward flow, close runner 38, play the effect that ends.This arc valve block 34 is made by stainless steel material, with arc protuberance 37 against one side be provided with rubber spacer, in case leak-stopping water.

Figure 13 is the structural drawing of the 4th embodiment's of the present utility model one-piece type safety check.As shown in figure 13, safety check of the present utility model comprises main valve body 41 and runner 48.The backstop that is integrally formed with in the safety check comprises arc valve block 44 and the pipe box shape support 42 of fitting fully with runner 48 inwalls, and arc valve block 44 upper ends and this pipe box shape support 42 flexibly connect.When this valve block 44 was closed, this arc-like sheet passed through mutually with runner 48 inwalls, and its edge is close on the support 42 of runner 48 inwalls, owing to be that arc/sphere is fitted, played the effect that prevents fluid reflux preferably between the two; When valve block was opened to maximum position, the arc convex surface of this arc-like sheet and runner 48 inwalls were fitted fully, have reduced the resistance of runner to greatest extent, have increased the area of runner.

Figure 14 is the enlarged diagram of the backstop of safety check among Figure 13.Figure 15 is the assembling decomposing schematic representation of Figure 14.Figure 16 is the plan view of Figure 15.As Figure 14, Figure 15 and shown in Figure 16, one is extended with a hook-type link 43 on the support 42, and valve block 44 is provided with mounting hole 45, and link 43 penetrates mounting hole 45, and valve block 44 is fixed on the support 42.Mounting hole 45 is positioned at the peak place of arc valve block 44.When the fluid positive flow through the time, valve block 44 is subjected to impact force and around upwards upset of mounting hole 45, thereby opens runner 48, plays the effect of conducting; When fluid stops forward flow, valve block 44 can be properly fit onto on the support 42 around mounting hole 45 reverse flip owing to gravity, if fluid produces reverse reflux, valve block 44 is subjected to reverse impact power and also can be properly fit onto on the support 42 around mounting hole 45 reverse flip, thereby when fluid does not have forward flow, close runner 48, play the effect that ends.This arc-like sheet 44 is made by stainless steel material, with support 42 against one side be provided with rubber spacer, in case leak-stopping water.This kind safety check is applied to tubule footpath occasion, economical with materials.Play the switching function of ball valve simultaneously and prevent adverse current.

Above-mentioned only is several preferred embodiment of the present utility model, according to principle of the present utility model, can also make various modifications or alternative.For example, all in runner, adopt supporting structure in the foregoing description, be used for fixing valve block.Also valve block directly can be fixed in the runner fully, correspondingly, stop part directly is set in the runner inner wall.Even adopted supporting structure, stop part also not necessarily must be set on the support, also can set the stop part of convex table type fully in runner inner wall.Should be appreciated that these conversion do not break away from protection domain of the present utility model.

Claims (10)

1, a kind of one-piece type safety check comprises valve body and runner; It is characterized in that, be provided with backstop in the runner; Described backstop comprises stop part and valve block; Described stop part is arranged on the runner inner wall; Described valve block is with this stop part adjacency and articulate fixing in the relative runner inner wall of its peak.

2, one-piece type safety check as claimed in claim 1 is characterized in that, described valve body is a ball valve.

3, one-piece type safety check as claimed in claim 1 is characterized in that, described valve body is a gate valve.

As the described one-piece type safety check of arbitrary claim in the claim 1 to 3, it is characterized in that 4, described valve block is the disc valve block that is complementary with the runner inner wall cross section.

5, one-piece type safety check as claimed in claim 1 is characterized in that, is provided with a support in the described runner, articulates with described valve block peak; This support by dowel fixes on runner inner wall.

6, one-piece type safety check as claimed in claim 5 is characterized in that, has annular groove at rack inner wall, and seal ring is installed in the groove.

7, one-piece type safety check as claimed in claim 1 is characterized in that, valve block is an arc-like sheet, its arc is designed to valve block when closing, this arc-like sheet passes through mutually with runner inner wall, and valve block is when being opened to maximum position, the structure that this arc-like sheet and runner inner wall are fitted fully.

8, as claim 1 or 7 described one-piece type safety check, it is characterized in that the valve rod of valve body is provided with slotted eye, valve block is provided with mounting hole, is equipped with elastic component in the mounting hole, and this elastic component penetrates slotted eye, be fixed in the slotted eye by outside tension force, thereby valve block is connected with valve handle activity.

9, one-piece type safety check as claimed in claim 7 is characterized in that, described runner inner wall is provided with a support, this support by dowel fixes on this runner inner wall; One is extended with the hook-type link on this support, and valve block is provided with mounting hole, and this link penetrates mounting hole, and valve block is fixed on the support.

10, one-piece type safety check as claimed in claim 1 is characterized in that, described valve block and stop part against one side be provided with the rubber seal bed course.

Images