CN213420012U

CN213420012U - Check valve

Info

Publication number: CN213420012U
Application number: CN202022312371.7U
Authority: CN
Inventors: 郭占涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-06-11
Anticipated expiration: 2030-10-16

Abstract

The utility model relates to a check valve, including the valve body, set up in fluid flow way in the valve body, set up in runner import and runner export on the fluid flow way, and set up through the round pin axle in the valve body, and be used for opening or closed fluid flow way's valve clack, the valve body include the intervalve, and set up respectively in the flange at intervalve both ends, the inside arch in inner ring limit of flange forms annular retaining ring, is provided with the annular circle that is formed by 304 stainless steel preparation on the annular retaining ring that is close to the runner import side, the annular circle welds on corresponding annular retaining ring, the annular circles and is close to the one end of valve clack is provided with first sealed face, be provided with the sealed face of second on the valve clack. The utility model discloses long service life, it is not fragile.

Description

Check valve

Technical Field

The utility model relates to a valve, concretely relates to check valve.

Background

The check valve is a check valve that prevents pipeline fluid adverse current, and present check valve body adopts cast iron material preparation to form mostly, and it can cast out outside convex mounting groove on the valve body, through set up the shaft hole on the mounting groove, with the round pin axle run through in the shaft hole and through the clearance between filler seal shaft hole and the round pin axle to realize the installation of round pin axle, the problem that the check valve of this structure exists is: 1) the valve body is made of cast iron, and the phenomenon that the flange plate is cracked can occur once the flange plate is too large, so that the check valve is damaged and cannot be used, 2) the valve body is made of cast iron, and after the valve body is contacted with water for a long time, a sealing surface is easily rusted, so that the sealing effect cannot be achieved, the service life of the check valve is reduced, and 3, the packing of the sealing shaft hole and the packing of the pin shaft are easily loosened, so that the liquid leakage phenomenon is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a check valve.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a check valve, includes the valve body, set up in fluid flow path in the valve body, set up in runner import and runner export on the fluid flow path to and through the round pin axle set up in the valve body, and be used for opening or closing fluid flow path's valve clack, the valve body includes the intervalve, and set up respectively in the flange at intervalve both ends, the inside arch in inner ring limit of flange forms annular retaining ring, is provided with the annular circle that is formed by 304 stainless steel preparation on being close to the annular retaining ring of runner import side, the annular circle welds on corresponding annular retaining ring, the annular circles and is close to the one end of valve clack is provided with first sealed face, be provided with the sealed face of second on the valve clack.

Furthermore, a plurality of mounting holes are uniformly formed in the flange along the circumference;

the annular ring is arranged in the middle pipe, and a gap is arranged between the annular ring and the middle pipe.

Furthermore, the valve body is made of forged steel, and the flange is welded and fixed with the intermediate pipe.

Furthermore, a plurality of rings of convex rings are arranged at one end, far away from the valve body, of the annular retaining ring.

Further, the valve clack comprises a valve clack body, a lantern ring arranged on the valve clack body and a shaft hole arranged on the lantern ring, wherein the pin shaft is arranged in the shaft hole in a penetrating manner, a groove is formed in the valve clack body so as to form an annular bulge, and the second sealing surface is arranged on the annular bulge;

and limiting rings are further arranged on two sides of the valve clack and sleeved on the pin shaft.

Furthermore, the valve flap is composed of a metal core layer and a rubber surface layer compounded on the outer surface of the metal core layer.

Furthermore, the two ends of the pin shaft are welded on the valve body.

Furthermore, an arc-shaped shaft seat is welded on the valve body, and the pin shaft is arranged on one side, close to the annular ring, of the arc-shaped shaft seat.

Furthermore, threaded holes are formed in two ends of the arc-shaped shaft seat, cap screws are arranged in the threaded holes, through holes are formed in two ends of the pin shaft, an inserting rod is arranged at one end, away from the nuts, of the screw rod of each cap screw, the inserting rod is inserted into the through holes, the outer diameter of the inserting rod is smaller than that of the screw rod, a limiting boss is formed, and the pin shaft is abutted to the limiting boss.

Furthermore, the two ends of the arc-shaped shaft seat are provided with first strip-shaped holes, the two ends of the pin shaft are provided with second strip-shaped holes, one end, close to a fluid flow channel inlet, of each second strip-shaped hole is provided with a linear limiting groove communicated with the second strip-shaped holes in an integrated mode, a cap-free screw is arranged in each first strip-shaped hole, one end of each cap-free screw is provided with a linear limiting rod, the other end of each cap-free screw penetrates through the corresponding second strip-shaped hole and the corresponding first strip-shaped hole in sequence and then is provided with two locking nuts, the two locking nuts are abutted to form a double-nut anti-loosening mechanism, a limiting sleeve is further sleeved on each cap-free screw, and the two ends of each limiting sleeve are abutted to the.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the valve body of the utility model is made of steel materials by adopting the forged steel technology, and compared with cast iron materials, the valve body is not easy to cause flange cracking even if the force is large in the installation process; the utility model discloses the annular ring that the welding was made by 304 stainless steel on the valve body to make and set up in traditional technique in sealed face that the valve clack contacted improve for setting up on the annular ring on the valve body, and because the annular ring adopts 304 stainless steel, it can not rust, has solved the short problem of life-span that traditional check valve leads to because of the sealed face of valve body rusts. The utility model discloses the round pin axle sets up in the fluid flow way in the valve body, and its more traditional valve body in the round pin axle set up on the mounting groove, can not set up the shaft hole on the valve body, avoided the valve body weeping phenomenon because of the packing in sealed round pin axle and shaft hole is lax and is leaded to.

Drawings

Fig. 1 is a perspective view of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of the valve flap in embodiment 1 of the present invention;

fig. 4 is a perspective view of embodiment 2 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 6 is a cross-sectional view taken along A-A of FIG. 5;

fig. 7 is a perspective view of embodiment 3 of the present invention;

fig. 8 is a schematic structural view of embodiment 3 of the present invention;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 8;

fig. 10 is a perspective view of a pin shaft in embodiment 3 of the present invention;

fig. 11 is a perspective view of a cap-less screw according to embodiment 3 of the present invention;

in the figure: 1. the valve comprises a valve body, 2, a fluid flow channel, 3, a flow channel inlet, 4, a flow channel outlet, 5, a pin shaft, 6, a valve clack, 7, a middle pipe, 8, a flange, 9, an annular retainer ring, 10, an annular ring, 11, a second sealing surface, 12, a mounting hole, 13, a gap, 14, a convex ring, 15, a valve clack body, 16, a lantern ring, 17, a shaft hole, 18, a groove, 19, an annular bulge, 20, a limiting ring, 21, a metal core layer, 22, a rubber surface layer, 23, an arc-shaped shaft seat, 24, a cap screw, 25, an insertion rod, 26, a limiting boss, 27, a first strip-shaped hole, 28, a second strip-shaped hole, 29, a linear limiting groove, 30, a cap-free screw, 31, a linear limiting rod, 32, a locking nut, 33 and a limiting sleeve.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

An embodiment of a check valve of the present invention as shown in fig. 1 to 3 comprises a valve body 1, a fluid flow passage 2 disposed in the valve body 1, a flow passage inlet 3 and a flow passage outlet 4 disposed on the fluid flow passage 2, and a valve flap 6 disposed in the valve body 1 through a pin 5 and used to open or close the fluid flow passage 2, the valve body 1 including a middle tube 7, and flanges 8 respectively arranged at two ends of the middle pipe 7, wherein the inner ring edge of the flange 8 protrudes inwards to form an annular check ring 9, an annular ring 10 made of 304 stainless steel is arranged on the annular check ring 9 close to the inlet 3 side of the flow passage, the annular ring 10 is welded on the corresponding annular retainer ring 9, a first sealing surface is arranged at one end, close to the valve clack 6, of the annular ring 10, and a second sealing surface 11 is arranged on the valve clack 6. The utility model discloses the annular ring 10 that the welding was made by 304 stainless steel on valve body 1 to make and set up in valve body 1 with the sealed face of valve clack 6 contact by traditional technique and improve for setting up on annular ring 10, and because annular ring 10 adopts 304 stainless steel, it can not rust, has solved the short problem of life-span that traditional check valve leads to because of the sealed face of valve body 1 rusts.

Furthermore, a plurality of mounting holes 12 are uniformly arranged on the flange 8 along the circumference;

further, the annular ring 10 is arranged in the middle pipe 7, and a gap 13 is arranged between the annular ring and the middle pipe 7, so that a yielding space is reserved for arranging the pin shaft 5. And the distance between the first sealing surface on the annular ring 10 and the flange 8 at the inlet end of the valve body 1 is 20-35 cm.

Further, the valve body 1 is made of forged steel, and the flange 8 and the intermediate pipe 7 are welded and fixed. The forged steel material refers to steel material manufactured by adopting a forged steel technology; the utility model discloses valve body 1 adopts the steel that the forged steel technique preparation formed, and its quality is higher than cast steel material spare, can bear big impact force effect, and the mechanical properties of plasticity, toughness and other aspects also all are higher than cast steel spare, farther far is superior to cast iron material, consequently, its cast iron material than traditional valve body, even if it is great with effort in the installation, also is difficult for causing flange 8 to ftracture.

Furthermore, a plurality of rings of convex rings 14 are arranged at one end of the annular retainer ring 9 far away from the valve body 1.

Further, the valve flap 6 comprises a valve flap body 15, a sleeve ring 16 arranged on the valve flap body 15, and a shaft hole 17 arranged on the sleeve ring 16, wherein the pin shaft 5 is arranged in the shaft hole 17 in a penetrating manner, a groove 18 is arranged on the valve flap body 15, so that an annular protrusion 19 is formed, and the second sealing surface 11 is arranged on the annular protrusion 19. The collar 16 is integrally connected to the valve flap body 15.

Further, the valve flap 6 comprises a metal core layer 21, and a rubber surface layer 22 compounded on the outer surface of the metal core layer 21.

As an embodiment of the utility model relates to a check valve, the both ends welding of round pin axle 5 set up in on the valve body 1.

In embodiment 1, only the two ends of the pin shaft 5 are welded to the valve body 1, the contact area between the pin shaft 5 and the valve body 1 is small, and after the welded part is corroded, the pin shaft 5 is easy to fall off, so that the valve body 1 is damaged. In addition, because

round pin axle

5 and 1 welded fastening of valve body, consequently, the rubber layer wearing and tearing back on the valve clack 6, valve clack 6 can't be changed, directly leads to scrapping of whole check valve, for solving above-mentioned problem, the utility model discloses embodiment 2 and embodiment 3 are still provided.

Example 2

Embodiment 2 is the same as embodiment 1, except for the connection mode of the pin 5 and the valve body 1;

in embodiment 2, as shown in fig. 4 to 6, an arc-shaped shaft seat 23 is welded to the valve body 1, and the pin shaft 5 is disposed on one side of the arc-shaped shaft seat 23, which is close to the annular ring 10. In the embodiment, the contact area between the arc-shaped shaft seat 23 and the valve body 1 is greatly increased, and the problem that the pin shaft 5 falls off due to corrosion of welding spots is avoided.

Further, threaded holes are formed in two ends of the arc-shaped shaft seat 23, cap screws 24 are arranged in the threaded holes, through holes are formed in two ends of the pin shaft 5, an inserting rod 25 is arranged at one end, far away from a nut, of a screw rod of each cap screw 24, the inserting rod 25 is inserted into the through holes, the outer diameter of the inserting rod 25 is smaller than the outer diameter of the screw rod, a limiting boss 26 is formed, and the pin shaft 5 is abutted to the limiting boss 26. The setting mode of this embodiment round pin axle 5, its round pin axle 5's simple to operate is swift, and the dismantlement of round pin axle 5 of being convenient for is renewed.

Example 3

Embodiment 3 is the same as embodiment 1, except for the connection mode of the pin 5 and the valve body 1;

in embodiment 3, as shown in fig. 7 to 11, the two ends of the arc-shaped shaft seat 23 are provided with first strip-shaped holes 27, the two ends of the pin shaft 5 are provided with second strip-shaped holes 28, one end of the second strip-shaped hole 28 close to the inlet of the fluid flow channel 2 is provided with a linear limiting groove 29 integrally communicated with the second strip-shaped hole 28, the linear limiting groove 29 is perpendicular to the second strip-shaped hole 28, a cap-free screw 30 is arranged in the first strip-shaped hole 27, one end of the cap-free screw 30 is provided with a linear limiting rod 31, the other end of the cap-free screw 30 sequentially penetrates through the second strip-shaped hole 28 and the first strip-shaped hole 27 to be provided with two locking nuts 32, the two locking nuts 32 are abutted to form a double-nut anti-loosening mechanism, the cap-free screw 30 is further sleeved with a limiting sleeve 33, and two ends of the limiting sleeve 33 are respectively abutted to the pin shaft 5 and the arc-shaped shaft seat 23. The utility model discloses during the installation, after passing first bar hole 27, stop collar 33, second bar hole 28 in proper order with a style of calligraphy pole of no cap screw 30, rotatory no cap screw 30 makes a style of calligraphy gag lever post 31 arrange a style of calligraphy spacing inslot 29 in, then will two upper and lower lock nut 32 screw can, its round pin axle 5's simple to operate is swift, and the dismantlement of the round pin axle 5 of being convenient for is renewed.

The above-described embodiments are merely preferred examples of the present invention and are not exhaustive of the possible implementations of the present invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.

Claims

1. The check valve is characterized by comprising a valve body (1), a fluid flow channel (2) arranged in the valve body (1), a flow channel inlet (3) and a flow channel outlet (4) which are arranged on the fluid flow channel (2), and a valve flap (6) which is arranged in the valve body (1) through a pin shaft (5) and is used for opening or closing the fluid flow channel (2), wherein the valve body (1) comprises a middle pipe (7) and flanges (8) which are respectively arranged at two ends of the middle pipe (7), the inner ring edge of each flange (8) protrudes inwards to form an annular check ring (9), an annular check ring (10) which is prepared from 304 stainless steel is arranged on the annular check ring (9) close to the flow channel inlet (3), the annular check ring (10) is welded on the corresponding annular check ring (9), and a first sealing surface is arranged at one end, close to the valve flap (6), of the annular check ring (10), and a second sealing surface (11) is arranged on the valve clack (6).

2. A check valve according to claim 1,

a plurality of mounting holes (12) are uniformly formed in the flange (8) along the circumference;

the annular ring (10) is arranged in the middle pipe (7), and a gap (13) is arranged between the annular ring and the middle pipe (7).

3. A non-return valve according to claim 1, characterized in that the valve body (1) is made of forged steel, and the flange (8) is welded to the intermediate tube (7).

4. A non-return valve according to claim 1, characterized in that the annular collar (9) is provided with several rings (14) at its end remote from the valve body (1).

5. A non-return valve according to claim 1, characterized in that the flap (6) comprises a flap body (15), a collar (16) arranged on the flap body (15), an axial hole (17) arranged on the collar (16), the pin (5) is arranged through the axial hole (17), a groove (18) is arranged on the flap body (15) to form an annular protrusion (19), and the second sealing surface (11) is arranged on the annular protrusion (19);

and limiting rings (20) are further arranged on two sides of the valve clack (6), and the pin shaft (5) is sleeved with the limiting rings (20).

6. A non-return valve according to claim 1, characterized in that the flap (6) consists of a metal core layer (21) and a rubber skin (22) laminated to the outer surface of the metal core layer (21).

7. A non-return valve according to claim 1, characterized in that the pin (5) is welded at both ends to the valve body (1).

8. A non-return valve according to claim 1, characterized in that the valve body (1) is welded with an arc-shaped axle seat (23), and the pin (5) is arranged on the arc-shaped axle seat (23) at the side close to the annular ring (10).

9. The non-return valve according to claim 8, characterized in that the two ends of the arc-shaped shaft seat (23) are provided with threaded holes, the threaded holes are internally provided with cap screws (24), the two ends of the pin shaft (5) are provided with through holes, one end of the screw rod of the cap screws (24) far away from the nut is provided with an insert rod (25), the insert rod (25) is inserted into the through holes, the outer diameter of the insert rod (25) is smaller than that of the screw rod, so that a limit boss (26) is formed, and the pin shaft (5) is abutted to the limit boss (26).

10. The check valve according to claim 8, wherein a first strip-shaped hole (27) is formed at each end of the arc-shaped shaft seat (23), a second strip-shaped hole (28) is formed at each end of the pin shaft (5), a linear limiting groove (29) integrally communicated with the second strip-shaped hole (28) is formed at one end of the second strip-shaped hole (28) close to the inlet of the fluid flow channel (2), a cap-free screw (30) is arranged in the first strip-shaped hole (27), a linear limiting rod (31) is arranged at one end of the cap-free screw (30), two locking nuts (32) are arranged after the other end of the cap-free screw (30) sequentially passes through the second strip-shaped hole (28) and the first strip-shaped hole (27), the two locking nuts (32) are abutted to form a double-nut anti-loosening mechanism, and a limiting sleeve (33) is further sleeved on the cap-free screw (30), and two ends of the limiting sleeve (33) are respectively abutted against the pin shaft (5) and the arc-shaped shaft seat (23).