CN210318662U

CN210318662U - Check valve

Info

Publication number: CN210318662U
Application number: CN201920944243.9U
Authority: CN
Inventors: 蔡小飞; 严荣杰; 黄水清; 祝文耀
Original assignee: Ningbo Jklong Precision Work Co ltd
Current assignee: Ningbo Jklong Precision Work Co ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-04-14
Anticipated expiration: 2029-06-21

Abstract

The utility model provides a check valve belongs to the technical field of valve. A check valve comprises a valve body, a valve cover, a rocker and a valve clack; the utility model discloses a be provided with the runner in the valve body, and the valve body is provided with the protruding neck of taking the intercommunicating pore and communicating with the runner outward in a salient way, and set up the constant head tank in the intercommunicating pore, place the both ends of the well core rod of the location axle of rocker in the constant head tank simultaneously, can effectively avoid offering the round pin shaft hole that runs through on the protruding neck of valve body and lead to the problem that the leak source increases, the sealing performance of valve has been improved, the safety guarantee nature is higher, in addition, when the installation, only need with the both ends of the location axle of rocker push in the constant head tank can, need not to carry out operations such as round pin axle, the structural strength is higher, thereby avoided leading to the.

Description

Check valve

Technical Field

The utility model relates to a technical field of valve specifically is to relate to a check valve.

Background

The check valve allows the medium to flow only in one direction due to its single passing direction and prevents the medium from flowing in the opposite direction.

At present, the swing check valve rotating according to the gravity center in the market comprises a valve body and a hinge mechanism, wherein a valve clack is arranged on the hinge mechanism, and the valve clack can freely lean against the surface of a valve seat through the hinge mechanism, so that the one-way control of the valve is realized. And the hinge mechanism is a combined structure of a pin shaft and a rocker, at the moment, a through pin shaft hole is formed in the convex neck of the valve body from one side to the other side, the pin shaft penetrates into the pin shaft hole from one side of the convex neck of the valve body to realize the installation of the rocker, and the pin shaft hole is sealed by a plug after the installation is finished. However, the structure and the installation mode thereof not only cause the problem of complicated and troublesome assembly process, but also increase the leakage points, so that the service performance of the check valve is poor, and the safety guarantee is reduced.

Disclosure of Invention

To the above-mentioned problem that exists among the prior art, it aims at providing a check valve now, set up valve body and valve gap, the valve gap lid is located on the protruding neck of valve body, and be provided with the constant head tank in the protruding neck of valve body, and simultaneously, hang the rocker in the constant head tank, and be provided with the valve clack on the rocker, make and not have newly-increased leak source on the valve body, thereby the leakproofness of check valve has been guaranteed, service performance has been improved, the safety guarantee nature is higher, simultaneously, only need with the rocker place in the constant head tank can, need not to carry out operations such as round pin axle, structural strength is higher, it is more convenient to assemble, the loaded down with trivial details and troublesome problem of equipment process has been avoided.

The specific technical scheme is as follows:

a check valve having the features comprising: a valve body, a valve cover, a rocker and a valve clack, wherein,

a through flow channel is arranged in the valve body, the two ends of the flow channel are respectively an inlet end and an outlet end, meanwhile, the middle part of the valve body is outwards provided with a convex neck in a protruding mode, a communicating hole communicated with the flow channel is formed in the convex neck, one end, away from the flow channel, of the communicating hole is communicated with the outside, two step structures which are arranged at intervals are symmetrically arranged on the inner wall of the communicating hole, a positioning groove is formed in the end face, away from one side of the flow channel, of each step structure in the arrangement direction of the communicating hole, one side, away from the flow channel, of each positioning groove is an opening, one side, close to the other positioning groove, of each positioning groove is also an opening, meanwhile, a sealing platform is arranged in the flow channel of the valve body and in an area communicated with the;

the valve cover is arranged on the convex neck and seals the communicating hole;

the rocker comprises a positioning shaft and a connecting rod, two ends of the positioning shaft are respectively inserted into the two positioning grooves, the connecting rod is vertically arranged in the middle of the positioning shaft, and the connecting rod is arranged towards one side of the flow channel;

the valve clack is fixed in the one end that the connecting rod deviates from the location axle, and the valve clack corresponds with the seal platform.

The check valve is characterized in that the two step structures are arranged on the same side of the sealing platform.

The check valve comprises a positioning shaft, wherein the positioning shaft comprises a central rod and suspension rods, the central rod is transversely arranged in the communication hole, the suspension rods are arranged at two ends of the central rod, the suspension rods and the central rod are coaxially arranged, and the two suspension rods are respectively arranged in the two positioning grooves.

In the check valve, the end of each suspension rod departing from one end of the central rod is arranged in a hemispherical shape.

In the above check valve, the diameter of the central rod is larger than that of the hanging rod, and the diameter of the central rod is larger than the groove width of the positioning groove.

In the above check valve, the length of the central rod is equal to the distance between the two step structures.

In the check valve, the length of the hanging rod is smaller than the depth of the transverse groove of the positioning groove along the direction of the connecting line of the two positioning grooves; in the arrangement direction of the communication holes, the diameter of the suspension rod is smaller than the longitudinal depth of the positioning groove.

The check valve comprises a check valve body, a connecting rod, a positioning ring and a valve clack, wherein the connecting rod is arranged in the middle of the central rod, one end of the connecting rod, which deviates from the central rod, is provided with the positioning ring, and the valve clack is fixedly connected to the positioning ring.

In the check valve, the valve cover is screwed on the convex neck of the valve body, and a sealing gasket is arranged between the valve cover and the convex neck.

In the check valve, the valve cover is screwed with one end of the convex neck and inserted into the communicating hole, and the end face of the end of the valve cover inserted into the communicating hole abuts against the end face of the stepped structure provided with the positioning groove.

The positive effects of the technical scheme are as follows:

foretell check valve, be provided with the stair structure on the inner wall through the intercommunicating pore in the protruding neck of valve body, and the constant head tank has been seted up on the stair structure, make the both ends of the well core rod of location axle can place in the constant head tank, avoided offering the round pin shaft hole that runs through on the protruding neck of valve body and lead to the problem that the leak source increases, the leakproofness of check valve has been improved, service performance has been improved, the safety guarantee nature is higher, and simultaneously, only need directly place the both ends of the location axle of rocker in the constant head tank during installation and can accomplish the installation, need not to wear operations such as round pin axle, structural strength is higher, the loaded down with trivial details and troublesome problem of equipment process has been avoided, more.

Drawings

FIG. 1 is a block diagram of an embodiment of a check valve of the present invention;

FIG. 2 is a view angle diagram of a preferred embodiment of the present invention;

fig. 3 is a view angle diagram of the valve body according to a preferred embodiment of the present invention;

fig. 4 is a structural view of another perspective of the valve body according to a preferred embodiment of the present invention;

fig. 5 is a structural diagram of a joystick according to a preferred embodiment of the present invention.

In the drawings: 1. a valve body; 11. a flow channel; 12. a raised neck; 13. a step structure; 14. a sealing table; 111. an inlet end; 112. an outlet end; 121. a communicating hole; 131. positioning a groove; 2. a valve cover; 21. a gasket; 3. a rocker; 31. positioning the shaft; 32. a connecting rod; 311. a center pole; 312. a suspension rod; 321. a positioning ring; 4. and the valve clack.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 5, but the following contents are not intended to limit the present invention.

FIG. 1 is a block diagram of an embodiment of a check valve of the present invention; fig. 2 is a view angle structure diagram according to a preferred embodiment of the present invention. As shown in fig. 1 and 2, the present embodiment provides a check valve including: valve body 1, valve gap 2, rocker 3 and valve clack 4, valve gap 2 lid are located on valve body 1, and rocker 3 and valve clack 4 all are provided with in the valve body 1.

Fig. 3 is a view angle diagram of the valve body according to a preferred embodiment of the present invention; fig. 4 is a structural diagram of another view angle of the valve body according to a preferred embodiment of the present invention. As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a through flow channel 11 is provided in the valve body 1, and two ends of the flow channel 11 are respectively an inlet end 111 and an outlet end 112, so that the medium can flow out from the outlet end 112 after entering from the inlet end of the flow channel 11, and a passage is provided for the passage of the medium, meanwhile, a convex neck 12 is provided in the middle of the valve body 1 in an outward protruding manner, and a communication hole 121 communicated with the flow channel 11 is provided in the convex neck 12, which is convenient for installing the valve cover 2, the rocker 3 and the valve flap 4, and one end of the communication hole 121, which is far away from the flow channel 11, is communicated with the outside, so that an operator can install the rocker 3, the valve flap 4. Two step structures 13 which are arranged at intervals are symmetrically arranged on the inner wall of the communication hole 121, and the step structures 13 are positioned at two sides of the flow channel 11 in the vertical direction, so that the two sides of the flow channel 11 are both provided with supporting structures, the structural balance is better, and a positioning groove 131 is formed on the end surface of one side of each step structure 13 departing from the flow channel 11 along the arrangement direction of the communication holes 121, and one side of each positioning groove 131 departing from the flow channel 11 is open, and the side of each positioning groove 131 close to another positioning groove 131 is also open, so that the end surface of each stepped structure 13 on the side near the communicating hole 121 connected to the outside and the positioning groove 131 on the end surface of the side near the other stepped structure 13 are both open, thereby be convenient for the installation and the action of 3 structures of rocker for the equipment is more convenient, and the later stage is more reasonable to controlling of valve clack 4. Meanwhile, a sealing platform 14 is arranged in the flow channel 11 of the valve body 1 and in the area communicated with the communication hole 121, and the sealing platform 14 is arranged on one side close to the inlet end 111, so that the sealing platform 14 is arranged between the inlet end 111 and the outlet end 112 of the flow channel 11, and the sealing platform 14 can seal the inlet end 111, thereby preventing the medium from reversely entering the flow channel 11 from the outlet end 112 and then flowing out from the inlet end 111, and the structure is more reasonable.

Specifically, the valve cover 2 covers the convex neck 12 and seals the communicating hole 121, preferably, the communicating hole 121 of the convex neck 12 is internally provided with an internal thread at one end connected with the outside, the valve cover 2 seals the connecting hole at one end provided with an external thread, and the valve cover 2 is screwed on the convex neck 12, so that the disassembly and assembly process between the valve cover 2 and the valve body 1 is more convenient, the assembly process is simpler, and the popularization and the promotion of the product are more facilitated.

Fig. 5 is a structural diagram of a joystick according to a preferred embodiment of the present invention. As shown in fig. 1 to 5, the rocker 3 disposed in the valve body 1 further includes a positioning shaft 31 and a connecting rod 32, wherein two ends of the positioning shaft 31 are respectively inserted into the two positioning grooves 131, so that the positioning shaft 31 can rotate in the two positioning grooves 131, and the connecting rod 32 is vertically disposed in the middle of the positioning shaft 31, so that the positioning shaft 31 and the connecting rod 32 are in a "T" shape, so that the connecting rod 32 can swing around the positioning shaft 31, and the connecting rod 32 is disposed toward one side of the flow channel 11, so that one end of the connecting rod 32 departing from the positioning shaft 31 can extend into the flow channel 11, so that the connecting rod 32 can be located at the sealing table 14, and a structural basis is provided for subsequent opening and closing of the sealing table 14.

Specifically, the valve flap 4 is fixed at one end of the connecting rod 32, which is away from the positioning shaft 31, and the valve flap 4 corresponds to the sealing platform 14, so that when the connecting rod 32 swings to be far away from the sealing platform 14, the valve flap 4 is separated from the sealing platform 14, at the moment, the opening of the flow channel 11 is realized, the medium flows from the inlet end 111 to the outlet end 112, and when the connecting rod 32 swings to be close to the sealing platform 14, the valve flap 4 abuts against the sealing platform 14, at the moment, the closing of the flow channel 11 is realized, the passing of the medium is blocked, so that the medium cannot flow from the outlet end 112 to the inlet end 111, and the non-. Namely, the connecting rod 32 and the valve flap 4 are in a sagging state under the action of self gravity, at the moment, the valve flap 4 is in a state of abutting against the sealing platform 14 when no medium passes through, and after the medium flows in from the inlet end 111 of the flow channel 11, the medium rushes the valve flap 4 away, at the moment, the valve flap 4 swings to one side of the outlet end 112 along with the connecting rod 32, so that the opening of the flow channel 11 is realized, and the medium is ensured to pass through; when the medium flows in from the outlet end 112 of the flow passage 11, the medium can tightly press the valve flap 4 on the sealing platform 14, so that the sealing of the flow passage 11 is realized, the blocking of the medium flow is realized, the directional flow of the medium is prevented, and the non-return operation of the valve is realized.

More specifically, set up two stair structure 13 in the intercommunicating pore 121 of protruding neck 12 and all set up with seal land 14 homonymy, make stair structure 13 all be close to seal land 14, thereby make when connecting rod 32 and valve clack 4 are in the flagging state under the effect of self gravity, can guarantee that the distance between valve clack 4 and the seal land 14 reduces, thereby saved structural material's use, also can make intercommunicating pore 121 leave great space simultaneously and be used for connecting rod 32 and valve clack 4's installation, the structure is more reasonable.

More specifically, the positioning shaft 31 with two ends placed in the positioning grooves 131 further includes a central rod 311 and suspension rods 312, the central rod 311 is horizontally placed in the communicating hole 121, two ends of the central rod 311 are respectively provided with one suspension rod 312, the suspension rods 312 and the central rod 311 are coaxially arranged, and the two suspension rods 312 are respectively arranged in the two positioning grooves 131, and the suspension rods 312 and the central rod 311 are supported by the two positioning grooves 131, so that the central rod 311 can rotate in the communicating hole 121 under the action of the two suspension rods 312, and the valve flap 4 can swing in the flow channel 11 to open and close the sealing table 14.

More specifically, the end of each suspension rod 312 at the two ends of the central rod 311, which is away from the end of the central rod 311, may be disposed in a hemispherical shape, which not only facilitates the placement of the suspension rod 312 in the positioning groove 131, but also reduces the contact area between the suspension rod 312 and the groove wall of the positioning groove 131, thereby facilitating the rotation of the suspension rod 312 in the positioning groove 131.

More specifically, the opening width between the opening of the positioning groove 131 on each step structure 13 and on the end surface close to the side where the communicating hole 121 connects the outside is defined as the groove width of the positioning groove 131, at this time, the diameter of the central rod 311 is greater than the diameter of the suspension rod 312, and the diameter of the central rod 311 is greater than the groove width of the positioning groove 131, so that steps with different diameters are formed between the central rod 311 and the suspension rod 312, not only can be used for guiding during installation, and is convenient to install, but also can avoid the positioning shaft 31 from moving transversely and dislocating the valve flap 4 and the sealing table 14, thereby avoiding the problem of unreliable sealing performance of the flow passage 11, the safety guarantee is higher, and the non-return precision is.

In addition, the length of the central rod 311 is equal to the distance between the two stepped structures 13, so that both ends of the central rod 311 can be abutted against the stepped structures 13 on both sides, and the problem that the valve flap 4 is dislocated with the sealing table 14 due to the transverse movement of the positioning shaft 31 is also prevented.

More specifically, the direction of the connecting line of the two positioning grooves 131 is defined as the transverse direction of the positioning groove 131, the arrangement direction of the communication hole 121 is the longitudinal direction of the positioning groove 131, and at this time, in the direction of the connecting line of the two positioning grooves 131, the length of the hanging rod 312 is smaller than the depth of the transverse groove of the positioning groove 131, so that the end of the hanging rod 312 is not contacted by the transverse groove bottom of the positioning groove 131, thereby facilitating the rotation of the rotating rod in the positioning groove 131, facilitating the opening and closing of the flow channel 11, and having a more reasonable structure; meanwhile, in the arrangement direction of the communication holes 121, the diameter of the suspension rod 312 is smaller than the longitudinal depth of the positioning groove 131, so that the suspension rod 312 can sink into the positioning groove 131, the problem that the suspension rod 312 cannot rotate due to the fact that the valve cover 2 presses the suspension rod 312 due to the fact that the suspension rod 312 protrudes from the positioning groove 131 is solved, and the non-return reliability is higher.

More specifically, set up connecting rod 32 in well middle part of pole 311, make well pole 311's both ends atress the same, two suspension rod 312 are the same by the holding power of constant head tank 131 promptly, the dead problem of card appears when having prevented well pole 311 from rotating, the non return reliability has been improved equally, and the one end that connecting rod 32 deviates from well pole 311 is provided with holding ring 321, and fixed connection has valve clack 4 on holding ring 321, it is fixed after passing holding ring 321 through utilizing protruding structure on the valve clack 4, be convenient for the fixed connection of valve clack 4 on connecting rod 32, it is more convenient to assemble.

More specifically, the valve cover 2 is screwed on the convex neck 12 of the valve body 1, and a sealing gasket 21 is arranged between the valve cover 2 and the convex neck 12, so that the sealing gasket 21 can seal the joint between the valve cover 2 and the convex neck 12, the sealing performance of the valve is improved, and the non-return reliability of the valve is ensured.

More specifically, the valve cover 2 is screwed into one end of the protruding neck 12 and inserted into the communicating hole 121, and the end face of the end of the valve cover 2 inserted into the communicating hole 121 abuts against the end face of the positioning groove 131 arranged on the step structure 13, so that the end face of the valve cover 2 can limit the hanging rod 312 to be separated from the positioning groove 131, and the position of the hanging rod 312 in the positioning groove 131 is limited, thereby preventing the problem that the hanging rod 312 moves up and down after the valve cover 2 is screwed, thereby improving the longitudinal position precision of the valve clack 4, further improving the reliability of check, in addition, because the diameter of the hanging rod 312 is smaller than the longitudinal depth of the positioning groove 131, when the valve cover 2 abuts against the end face of the positioning groove 131, the hanging rod 312 can still rotate in the positioning groove 131, the normal check performance of the valve cannot be influenced, and the structure.

In a preferred embodiment, the valve flap 4 is connected with the positioning ring 321 of the connecting rod 32 through a threaded fastener, for example, the valve flap 4 is fixed on the positioning ring 321 through a nut, so that the connection between the valve flap 4 and the connecting rod 32 is facilitated, the assembly is facilitated, and the structure is more reasonable.

The check valve provided by the embodiment comprises a valve body 1, a valve cover 2, a rocker 3 and a valve clack 4; be provided with runner 11 in through valve body 1, and valve body 1 is provided with the protruding neck 12 of taking intercommunicating pore 121 and communicating with runner 11 outward, and set up constant head tank 131 in intercommunicating pore 121, place the both ends of well core rod 311 of the location axle 31 of rocker 3 in constant head tank 131 simultaneously, can effectively avoid offering the problem that the round pin shaft hole that runs through and lead to the leak source to increase on the protruding neck 12 of valve body 1, the sealing performance of valve has been improved, the safety guarantee nature is higher, in addition, when the installation, only need with the both ends of the location axle 31 of rocker 3 push in constant head tank 131 can, need not to carry out operations such as round pin axle, structural strength is higher, thereby avoided leading to the product to be difficult to promote and the problem of popularization because of loaded down with.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims

1. A check valve, comprising: a valve body, a valve cover, a rocker and a valve clack, wherein,

a through flow passage is arranged in the valve body, the two ends of the flow passage are respectively an inlet end and an outlet end, meanwhile, the middle part of the valve body is provided with a convex neck which protrudes outwards, a communication hole communicated with the flow channel is arranged in the convex neck, one end of the communication hole, which is far away from the flow channel, is communicated with the outside, two step structures which are arranged at intervals are symmetrically arranged on the inner wall of the communicating hole, a positioning groove is arranged on the end surface of one side of each step structure, which is far away from the flow channel, along the arrangement direction of the communicating hole, and one side of each positioning groove, which is far away from the flow channel, is provided with an opening, and one side of each positioning groove, which is close to the other positioning groove, is also provided with an opening, meanwhile, a sealing platform is arranged in the flow channel of the valve body and in a region communicated with the communicating hole, and the sealing platform is positioned on one side close to the inlet end;

the valve cover is arranged on the convex neck in a covering manner and seals the communicating hole;

the rocker comprises a positioning shaft and a connecting rod, two ends of the positioning shaft are respectively inserted into the two positioning grooves, the connecting rod is vertically arranged in the middle of the positioning shaft, and the connecting rod faces one side of the flow channel;

the valve clack is fixed in the one end that the connecting rod deviates from the location axle, just the valve clack with the sealing bench corresponds.

2. The check valve of claim 1 wherein both of said step formations are disposed on the same side of said seal land.

3. The check valve of claim 1, wherein the positioning shaft comprises a central rod and suspension rods, the central rod is transversely disposed in the communication hole, the suspension rods are disposed at two ends of the central rod, the suspension rods are disposed coaxially with the central rod, and the suspension rods are disposed in the positioning grooves respectively.

4. The check valve of claim 3, wherein each of the suspension rods is disposed in a hemispherical shape at an end thereof facing away from the center rod.

5. The check valve of claim 3, wherein the center rod has a diameter greater than a diameter of the hanger rod and the center rod has a diameter greater than a slot width of the positioning slot.

6. The check valve of claim 3, wherein the length of the center rod is equal to the distance between the two step structures.

7. The check valve of claim 3 wherein the length of said hanger bar is less than the transverse groove depth of said detent groove in the direction of the line connecting said two detent grooves; the diameter of the suspension rod is smaller than the longitudinal depth of the positioning groove along the arrangement direction of the communication holes.

8. The check valve of claim 3, wherein the connecting rod is disposed in the middle of the central rod, and a positioning ring is disposed at an end of the connecting rod facing away from the central rod, and the valve flap is fixedly connected to the positioning ring.

9. The check valve of claim 1 wherein said valve cover is threaded onto said projecting neck of said valve body, a gasket being disposed between said valve cover and said projecting neck.

10. The check valve of claim 9, wherein the end of the valve cover screwed to the protruding neck is inserted into the communication hole, and the end surface of the end of the valve cover inserted into the communication hole abuts against the end surface of the stepped structure provided with the positioning groove.