CN202597803U

CN202597803U - Self-sealing check valve

Info

Publication number: CN202597803U
Application number: CN 201220178656
Authority: CN
Inventors: 陈建华; 郑开省; 陈世伟; 郑盛丰
Original assignee: FUJIAN OCEAN COPPER Co Ltd
Current assignee: FUJIAN OCEAN COPPER Co Ltd
Priority date: 2012-04-24
Filing date: 2012-04-24
Publication date: 2012-12-12
Anticipated expiration: 2022-04-24

Abstract

The utility model relates to a fluid control valve and provides a self-sealing check valve which is simple in structure, low in manufacturing cost, convenient to mount and use and good in buffering and sealing effects. The self-sealing check valve comprises a first plastic valve body and a second plastic valve body which are connected with each other and are coaxial with each other, and also comprises a guide rod, a valve clack and a return spring, wherein the first plastic valve body is provided with a water outlet; the inner side wall of the circumference of the end of the first plastic valve body away from the water outlet radially extends to form a valve clack bracket; water through holes are uniformly distributed on the surface of the valve clack bracket; the end of the valve clack bracket away from the water outlet extends to form a guide pipe along an axial part; the valve clack is arranged at the end of the valve clack bracket away from the guide pipe in an opening mode; one end of the guide rod penetrates through the guide pipe and is fixedly connected with the valve clack; the other end of the guide rod is detachably connected with a stopping shoulder; and the return spring is arranged on the outer side wall of the circumference of the guide pipe between the stopping shoulder and the valve clack bracket.

Description

A kind of from the motive sealing safety check

Technical field

The utility model relates to a kind of fluid control valve, and is particularly a kind of from the motive sealing safety check.

Background technique

Safety check is claimed one-way valve or check valve again, is widely used in the pipeline of medium one-way flow, is a kind of valve that can stop fluid to flow backwards automatically.But generally comprise metal valve body and be located at the metal start-stop device of the automatic on-off in the metal valve body, said start-stop device is opened voluntarily or is closed by media flow and strength.Existing safety check mainly contains two kinds of lift check valve and Swing check valves, its structure generally all more complicated, processing cost is high, fitting operation is complicated, return seat slowly, the non-return effect is bad, and the safety check cost of metal material is high, antiseptic property is bad.

Chinese patent comprises valve body and the spool that is arranged in the valve body number for ZL:201020300388.4 the utility model discloses a kind of automatic sealed type safety check, has sealing surface in the valve body; Be fixed with guide pipe in the valve body, in guide pipe, being provided with can be along the guide rod of this guide pipe slip, and guide pipe is stretched out at the two ends of guide rod respectively; One end and the spool of guide rod are connected, and on guide rod, are with spring, and spring one end acts on the guide pipe; The other end acts on the other end of guide rod, and effect lower valve core and sealing surface formation sealing at spring play a supportive role to guide pipe through the guide pipe on the support; Make under the effect of spring spool directly with support on sealing surface form sealing, the advantage of this patent oneself disclosure is easily manufactured, cost is lower; Simple in structure, easy to use.But its valve body of this patent and support are the split structural design, and manufacture cost is higher, fitting operation is complicated, and the steadiness of support in valve body is poor, is prone to cause the leakage of medium.

Summary of the invention

To the problems referred to above, the utility model propose a kind of simple in structure, low cost of manufacture, easy to install, buffering and good sealing effect from the motive sealing safety check.

For solving this technical problem; The utility model is taked following scheme: a kind of from the motive sealing safety check, comprise a pair of interconnecting and the first plastics valve body and the second plastics valve body of coaxial setting, and also comprise guide rod, flap and Returnning spring; The said first plastics valve body is provided with water outlet; The said first plastics valve body radially is extended with the flap support away from the inside circumference wall of that end of water outlet, and the surface of said flap support is evenly equipped with the water port, and this flap support away from that end of water outlet vertically part be extended with guide pipe; But said flap folding be located at flap support that end away from guide pipe; One end of said guide rod passes guide pipe and flap is connected, the removable shoulder block that is connected with of the other end, and said Returnning spring is located on the periphery wall of said guide pipe between shoulder block and the flap support.

Further improvedly be: said shoulder block is extended with the retaining edge that the fixed reset spring is used downwards near that end of Returnning spring.

Further improvedly be: the madial wall of said guide pipe is evenly equipped with the grooves that a plurality of parts are vertically extended, and the periphery wall of said guide rod is provided with the raised lines that a plurality of parts vertically that are complementary with groove are extended.

Further improvedly be: said groove and raised line are respectively 6.

Further improvedly be: said guide rod and flap are one-body molded to be made.

Further improvedly be: said shoulder block is through the removable end of being located at guide rod of screw.

Through adopting the aforementioned techniques scheme; The beneficial effect of the utility model is: this new type auto sealing safety check; Its flap support directly and the plastic valve body by integral forming make; Compared with prior art, its structure is simpler, manufacture cost is lower, it is more convenient to install and use, buffering and sealing effect are better, support can not occur and combine the insecure phenomenon that causes dielectric leakage with valve body.

Description of drawings

Fig. 1 is the utility model example structure schematic representation.

Embodiment

Combine accompanying drawing and specific embodiment that the utility model is further specified at present.

With reference to figure 1, present embodiment discloses a kind of from the motive sealing safety check, comprises the first plastics valve body 1 and the second plastics valve body 2; Said first plastomer is threaded with second plastomer, and the said second plastics valve body 2 is provided with water intake 21, and the said first plastics valve body 1 is provided with water outlet 11; Also comprise guide rod 3, flap 4 and Returnning spring 5, the said first plastics valve body 1 radially is extended with flap support 12 away from the inside circumference wall of water outlet 11 those ends, and the surface of said flap support 12 is evenly equipped with the water port; And this flap support 12 away from that end of water outlet 11 vertically part be extended with guide pipe 13, said guide pipe 13 is structure as a whole with flap support 12, but 4 foldings of said flap be located at flap support 12 that end away from guide pipe 13; One end of said guide rod 3 passes guide pipe 13 and is connected with flap 4, and the other end is through the screw 7 removable shoulder blocks 6 that are connected with, and said Returnning spring 5 is located on the periphery wall of said guide pipe between shoulder block 6 and the flap support 12; Said shoulder block 6 is extended with retaining downwards along 61 near that end of Returnning spring 5; The effect of fixed reset spring is played on retaining edge 61, prevents the Returnning spring skew, and Returnning spring mainly plays support guide bar and flap; Make and form opening and closing between flap and the flap support of guide rod lower end and be dynamically connected; Make the guide rod can be along the guide pipe axial motion, when pipeline was connected, the pressure of fluid overcomes the pressure of Returnning spring and washes the sealing surface disengaging that guide rod makes flap with the flap support of guide rod below open; Realize one-directional fluid flow; When pipeline turn-offed, guide rod is return under the effect of Returnning spring then, drove flap and was fitted in closely on the flap support; Realize the function of non-return, prevent the refluence of medium.

The madial wall of said guide pipe 13 is evenly equipped with the groove (not shown) of 6 part extensions vertically; The periphery wall of said guide rod 3 is provided with the raised line (not shown) of the extension of part vertically that is complementary with guide pipe inboard wall groove (not shown); Through raised line and the mutual clamping of groove (not shown), can prevent that guide rod from doing circumferential movement along guide pipe between guide rod and the guide pipe.

This new type auto sealing safety check; Its flap support directly and the plastic valve body by integral forming make; Compared with prior art; Its structure is simpler, manufacture cost is lower, it is more convenient to install and use, buffering and sealing effect are better, support can not occur and combine the insecure phenomenon that causes dielectric leakage with valve body, and the valve body cost of plastic material is low, antiseptic property good.

The above record is merely the embodiment who utilizes this origination techniques content, anyly is familiar with modification, the variation that this creation of this art utilization is done, and all belongs to the claim of this creation opinion, and is not limited to embodiment announcement person.

Claims

1. one kind from the motive sealing safety check; Comprise a pair of interconnecting and the first plastics valve body and the second plastics valve body of coaxial setting; It is characterized in that: also comprise guide rod, flap and Returnning spring, the said first plastics valve body is provided with water outlet, and the said first plastics valve body radially is extended with the flap support away from the inside circumference wall of that end of water outlet; The surface of said flap support is evenly equipped with the water port; And this flap support away from that end of water outlet vertically part be extended with guide pipe, but said flap folding be located at flap support that end away from guide pipe, an end of said guide rod passes guide pipe and flap is connected; The removable shoulder block that is connected with of the other end, said Returnning spring is located on the periphery wall of said guide pipe between shoulder block and the flap support.

2. according to claim 1 from the motive sealing safety check, it is characterized in that: said shoulder block is extended with the retaining edge that the fixed reset spring is used downwards near that end of Returnning spring.

3. according to claim 1 from the motive sealing safety check; It is characterized in that: the madial wall of said guide pipe is evenly equipped with the groove that a plurality of parts are vertically extended, and the periphery wall of said guide rod is provided with the raised line that a plurality of parts vertically that are complementary with groove are extended.

4. according to claim 3 from the motive sealing safety check, it is characterized in that: said groove and raised line are respectively 6.

5. according to claim 1 from the motive sealing safety check, it is characterized in that: said guide rod and flap are one-body molded to be made.

6. according to claim 1 from the motive sealing safety check, it is characterized in that: said shoulder block is through the removable end of being located at guide rod of screw.