CN217683400U

CN217683400U - Check valve with conveniently replaced sealing ring

Info

Publication number: CN217683400U
Application number: CN202221097375.0U
Authority: CN
Inventors: 陈育玺
Original assignee: Gaote Holding Group Co ltd
Current assignee: Gaote Holding Group Co ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-10-28
Anticipated expiration: 2032-05-10

Abstract

The utility model relates to a valve structure field especially indicates a conveniently change check valve of sealing washer, and this check valve includes valve body, valve clack subassembly and spacing subassembly. The inside fluid cavity that is of valve body, the both ends of valve body are inlet and leakage fluid dram respectively, and the fluid flows into behind the fluid cavity from the inlet and flows out from the leakage fluid dram. When the backflow phenomenon of the utility model occurs, the end cover can be taken down, and then the positioning plate of the valve clack component is moved outwards, so that the whole valve clack component is moved out of the fluid chamber, and the sealing ring can be replaced outside the valve body at the moment; then embedding the positioning plate into the valve body, pulling up the connecting plate of the limiting rod of the limiting assembly upwards, and then correspondingly embedding the connecting plate into the clamping groove on one side of the valve clack; and finally, connecting the fixing bolt and the threaded hole of the compression ring to be fastened so as to realize the replacement of the sealing ring. Therefore, the utility model discloses an above structure realizes the change of sealing washer, consequently can effectual improvement check valve's life, avoid extravagant.

Description

Check valve convenient for replacing sealing ring

Technical Field

The utility model relates to a valve structure field especially indicates a conveniently change check valve of sealing washer.

Background

The check valve refers to a valve that automatically opens and closes a valve flap depending on the flow of a medium itself to prevent the backflow of the medium, wherein the valve flap is generally assembled in a valve body of the check valve in a hinged connection structure. In the prior art, in order to improve the sealing performance of the closed valve flap, a sealing ring is usually fixed on the surface of the valve flap to improve the sealing effect.

However, in the long-term use of the check valve, the sealing ring frequently impacts the inner wall of the valve body and the fluid is corroded, so that the sealing ring is easily damaged, and the check valve is caused to backflow. And because the valve clack sets up in the valve body, can't change the sealing washer, consequently present check valve is after the sealing washer damages, changes whole sealing washer usually, and this mode causes the waste to a certain extent.

Disclosure of Invention

Not enough to above-mentioned background art proposes, the utility model provides a conveniently change check valve of sealing washer.

The utility model adopts the following technical scheme:

the utility model provides a conveniently change check valve of sealing washer which characterized in that, this check valve includes:

the valve body is internally provided with a fluid cavity, the two ends of the valve body are respectively provided with a liquid inlet and a liquid outlet, one side of the valve body between the liquid inlet and the liquid outlet is provided with an assembly port, and the assembly port is provided with an end cover in a packaging manner;

the valve clack assembly comprises a positioning plate, a valve clack, a sealing ring, a pressing ring and a fixing bolt, the positioning plate and the valve clack are hinged with each other, one end, away from the valve clack, of the positioning plate is bent to form a fixing part, the valve clack is provided with a mounting hole, the pressing ring is provided with a through threaded hole, the fixing bolt is in adaptive connection with the threaded hole, the sealing ring is arranged between the valve clack and the pressing ring, and the fixing bolt is in threaded connection with the threaded hole and fastened after penetrating through the mounting hole and the sealing ring;

wherein, the valve body is in both sides in the fitting port are equipped with the embedded groove, the both sides of locating plate are embedded into two respectively in the embedded groove, the end cover is fixed extremely behind the valve body, the end cover will the fixed part pressure is in the top surface of embedded groove, and the sealing washer corresponds and seals the inlet.

As a further improvement, the check valve further comprises a limiting component, wherein the limiting component comprises a limiting rod and a limiting spring, one end of the limiting rod is fixed to the valve clack, the other end of the limiting rod is connected with one end of the limiting spring, the other end of the limiting spring is connected to the inner wall of the fluid cavity, and the other end of the limiting spring is connected to a position, far away from one side of the assembling port, of the fluid inlet.

As a further improvement, a first connecting piece is fixed at a position, away from the assembling port, of the liquid inlet in the liquid cavity, a second connecting piece is fixed at the other end of the limiting rod, and the first connecting piece and the second connecting piece are provided with through holes; the two ends of the limiting spring are hooks, and the hooks at the two ends of the spring are hooked into the through hole of the first connecting piece and the through hole of the second connecting piece respectively.

As a further improvement, the limiting rod is far away from one end of the limiting spring is provided with a connecting plate, the valve clack faces away from one side of the sealing ring, the clamping groove is far away from one end of the mounting hole and is sealed, the connecting plate is embedded into the clamping groove in an adaptive mode, the fixing bolt and the threaded hole are connected to the fastening back, and the screw head of the fixing bolt blocks the connecting plate.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: when the backflow phenomenon of the check valve of the utility model occurs, the end cover can be taken down, and then the positioning plate is moved outwards, so that the whole valve clack assembly is moved out of the fluid cavity, and at the moment, the sealing ring can be replaced outside the valve body; then, the positioning plate is embedded into the valve body, the connecting plate of the limiting rod is pulled upwards and then is correspondingly embedded into the clamping groove; and finally, the fixing bolt and the threaded hole are connected and fastened to realize the replacement of the sealing ring. Therefore, the utility model discloses an above structure realizes the change of sealing washer, consequently can effectual improvement check valve's life, avoid extravagant.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

Fig. 3 is an enlarged schematic view of a point a in fig. 2.

Fig. 4 is a schematic perspective view of the valve body.

Fig. 5 is a schematic perspective view of the valve flap assembly.

Fig. 6 is a schematic view of a three-dimensional structure after the valve flap, the sealing ring, the pressing ring and the fixing bolt are disassembled.

Fig. 7 is a schematic structural diagram of the valve flap assembly connecting and limiting assembly.

Fig. 8 is an enlarged schematic view at B in fig. 7.

Fig. 9 is a perspective view of the valve flap assembly connecting and limiting assembly at another view angle relative to fig. 7.

Fig. 10 is a schematic perspective view of the stop lever.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 and 2, the check valve convenient for replacing the sealing ring comprises a valve body 1, a valve clack assembly and a limiting assembly. The valve body 1 is internally provided with a fluid cavity 104, two ends of the valve body 1 are respectively provided with a fluid inlet 101 and a fluid outlet 102, and fluid flows in from the fluid inlet 101 and flows out from the fluid outlet 102 after passing through the fluid cavity 104. The valve body 1 is provided with a mounting port 103 at one side between the liquid inlet 101 and the liquid outlet 102, and the valve clack assembly and the limiting assembly can be mounted in the fluid cavity 104 from the mounting port 103. The valve body 1 is arranged at the assembling opening 103 in a sealing mode, the end cover 11 can be fixed in a threaded mode after a bolt is arranged in a penetrating mode, the assembling opening 103 is sealed, and furthermore, a gasket made of rubber can be arranged in a gap between the end cover 11 and the valve body 1, so that the sealing effect is improved.

As shown in fig. 5 to 7, the valve flap assembly includes a positioning plate 25, a valve flap 21, a sealing ring 22, a pressing ring 23, and a fixing bolt 24. Wherein, the center of valve clack 21 is equipped with the mounting hole 211 that runs through, the center of clamping ring 23 is equipped with the screw hole 231 that runs through, fixing bolt 24 and this screw hole 231 adaptation are connected, sealing washer 22 sets up valve clack 21 between the clamping ring 23, fixing bolt 24 passes behind mounting hole 211 with sealing washer 22 with screw connection to the fastening of screw hole 231, make fixing bolt 24's spiral head with clamping ring 23 will sealing washer 22 compresses tightly, makes so that sealing washer 22 is fixed valve clack 21.

With continued reference to fig. 5 to 7, the positioning plate 25 and the valve flap 21 are hinged to each other in such a manner that a hinge rod 212 is fixed to one side of the valve flap 21, the hinge rod 212 may be integrally formed with the valve flap 21 by casting, and an end of the hinge rod 212 away from the valve flap 21 is hinged to the positioning plate 25 by a bolt-through structure, so as to rotate the valve flap 21 relative to the positioning plate 25. One end of the positioning plate 25 away from the valve flap 21 is bent to form a fixing portion 251. Referring to fig. 4 again, the valve body 1 is provided with insertion grooves 105 at two sides in the assembly opening 103, the insertion grooves 105 may be formed in such a manner that protrusions (not shown in the drawings) are disposed at two sides of the inner wall of the assembly opening 103, and a gap between the protrusions and the inner wall of the assembly opening 103 forms the insertion grooves 105. When the valve flap 21 is assembled, two sides of the positioning plate 25 are respectively embedded into the two embedding grooves 105, then the end cover 11 is fixed to the valve body 1, the end cover 11 presses the fixing portion 251 on the top surface of the embedding groove 105, so that the fixing portion 251 is fixed in the valve body 1, and at the moment, the valve flap 21 can rotate to seal the liquid inlet 101 correspondingly to the sealing ring 22.

Further, a rubber pad 252 is fixed on the surface of the fixing portion 251 at the end away from the valve flap 21, and after the end cover 11 is fixed to the valve body 1, the end cover 11 presses the rubber pad 252. This structure prevents the fixing portion 251 from being tightly fixed in the valve body 1 due to the assembly gap between the end cap 11 and the fixing portion 251, so that the structural stability of the valve flap assembly connected in the fluid chamber 104 can be effectively improved.

As shown in fig. 3 and 9, the stopper assembly includes a stopper rod 31 and a stopper spring 32. As shown in fig. 10, one end of the limiting rod 31 is provided with a connecting plate 311. Referring to fig. 5 again, a clamping groove 213 is disposed on a side of the valve flap 21 facing away from the sealing ring 22, and an end of the clamping groove 213 away from the mounting hole 211 is closed. The connecting plate 311 is fittingly inserted into the slot 213, and after the fixing bolt 24 and the threaded hole 231 are fastened, the head of the fixing bolt 24 blocks the connecting plate 311. Specifically, when the limiting rod 31 is assembled, the connecting plate 311 is embedded into the slot 213, and then the fixing bolt 24 and the threaded hole 231 are connected and fastened, so that the connecting plate 311 can be limited and fixed in the slot 213 by blocking the connecting plate 311 by the head of the fixing bolt 24, and one end of the limiting rod 31 is fixed to the valve flap 21.

With continued reference to fig. 2 and 3, the other end of the limiting rod 31 is connected to one end of the limiting spring 32, the other end of the limiting spring 32 is connected to the inner wall of the fluid chamber 104, and the other end of the limiting spring 32 is connected to a position of the fluid inlet 101 on a side away from the assembling port 103.

As shown in fig. 8, a first connecting piece 33 is fixed in the fluid chamber 104 at a position on the side of the fluid inlet 101 away from the fitting port 103, a second connecting piece 34 is fixed at an end of the limiting rod 31 away from the connecting plate 311, and the first connecting piece 33 and the second connecting piece 34 both have through holes; both ends of the limiting spring 32 are hooks, and the hooks at both ends of the limiting spring 32 are hooked into the through hole of the first connecting piece 33 and the through hole of the second connecting piece 34 respectively, so that both ends of the limiting spring 32 are connected with the inner wall of the fluid cavity 104 and the limiting rod 31 respectively, and both ends of the limiting spring 32 can rotate relative to the valve body 1 and the valve clack 21. And the valve flap 21 can be pulled towards the liquid inlet 101 by the elastic acting force compressed by the limiting spring 32, so that the sealing ring 22 is pressed towards the side wall of the fluid cavity 104 to seal the liquid inlet 101, the fluid is prevented from being discharged from the liquid outlet 102 and the liquid inlet 101, and the one-way flow of the fluid is realized. When fluid flows in from the liquid inlet 101, the pressure of the fluid overcomes the elastic force of the limiting spring 32 to push the press ring 23, the sealing ring 22 and the valve flap 21 open, and at this time, the fluid flows into the fluid cavity 104 and is discharged from the liquid outlet 102.

After the structure of the limiting assembly is adopted, when the valve body 1 is placed in the reverse direction, namely the end cover 11 faces downwards, the valve clack 21 can still be sealed by the tension of the limiting spring 32 at the moment, and the valve clack 21 is prevented from turning downwards under the action of gravity to lose the effect of preventing the backflow of the fluid. Therefore, the utility model discloses a check valve is applicable to and uses under various environment.

In addition, the center of clamping ring 23 is equipped with fixation nut 232, and this fixation nut 232 forms screw hole 231, fixing bolt 24's spiral shell head terminal surface is equipped with the cross recess, and this structure can be convenient for box spanner follows the inlet stretches into to fixation nut 232 entangles, thereby avoids clamping ring 23 rotates, and the screwdriver is followed simultaneously the leakage fluid dram 102 stretches into to imbed to fixing bolt 24's cross recess and rotate, can realize with fixing bolt 24 rotates to the fastening, from this it can be seen the utility model discloses can realize will in the valve body 1 sealing washer 22 is fixed to the fastening.

In summary, when the sealing ring 22 needs to be replaced, the end cover 11 can be removed, and then the positioning plate 25 is moved outward, so that the whole valve clack assembly is moved out of the fluid cavity 104, and at this time, the sealing ring 22 can be replaced outside the valve body 1; then, the positioning plate 25 is embedded into the valve body 1, and the connecting plate 311 of the limiting rod 31 is pulled up and then embedded into the clamping groove 213, specifically, a hand may be inserted into the fluid cavity 104 or a tool with a hook may be inserted into the fluid cavity 104 to pull up the connecting plate 311; finally, the fixing bolt 24 and the threaded hole 231 are connected and fastened to realize the replacement of the sealing ring 22. Therefore, the utility model discloses an above structure realizes sealing washer 22's change, consequently can effectual improvement check valve's life, avoid extravagant.

The aforesaid is only the embodiment of the present invention, but the design concept of the present invention is not limited to this, and it is right to utilize this concept the present invention to perform insubstantial modification, and all belong to infringement the protection scope of the present invention.

Claims

1. The utility model provides a conveniently change check valve of sealing washer which characterized in that, this check valve includes:

2. The check valve convenient for replacing the sealing ring according to claim 1, characterized in that: this check valve still includes spacing subassembly, spacing subassembly includes gag lever post and limiting spring, the one end of gag lever post is fixed to the valve clack, the other end of gag lever post with limiting spring's one end is connected, limiting spring's the other end is connected to the inner wall of fluid cavity, and limiting spring's the other end is connected to the inlet is kept away from the position of assembly opening one side.

3. The check valve convenient for replacing the sealing ring according to claim 2, wherein: a first connecting piece is fixed at a position, far away from the assembling port, of the liquid inlet in the liquid cavity, a second connecting piece is fixed at the other end of the limiting rod, and the first connecting piece and the second connecting piece are provided with through holes; the two ends of the limiting spring are hooks, and the hooks at the two ends of the spring are hooked into the through hole of the first connecting piece and the through hole of the second connecting piece respectively.

4. The check valve convenient for replacing the sealing ring according to claim 2, characterized in that: the utility model discloses a spacing spring, including limiting rod, valve clack, mounting hole, connecting plate adaptation embedding extremely in the draw-in groove, fixing bolt with the screw hole is connected to the fastening back, fixing bolt's spiral shell head blocks the connecting plate.