CN213451884U

CN213451884U - Check valve with good sealing performance

Info

Publication number: CN213451884U
Application number: CN202022439858.1U
Authority: CN
Inventors: 吴磊; 张绍南
Original assignee: Suzhou Tesco Fluid Control Equipment Co ltd
Current assignee: Suzhou Tesco Fluid Control Equipment Co ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-06-15
Anticipated expiration: 2030-10-28

Abstract

The utility model discloses a check valve that sealing performance is good uses in the valve field, and its technical scheme main points are: comprises a valve body, a liquid inlet channel and a liquid outlet channel; the valve body is internally provided with an accommodating cavity which is arranged between the liquid inlet channel and the liquid outlet channel and communicated with the liquid inlet channel and the liquid outlet channel; a swinging arm swinging along the vertical direction is rotatably connected in the accommodating cavity, a sealing valve clack of a sealing liquid inlet channel is connected on the swinging arm, and a sealing valve cover is detachably connected at an opening of the accommodating cavity; the sealing device has the technical effects that the sealing performance is better, fluid leakage can be better avoided, and fluid backflow can be better avoided.

Description

Check valve with good sealing performance

Technical Field

The utility model relates to a valve field, in particular to check valve that sealing performance is good.

Background

At present, chinese patent application with publication number CN104879536A discloses a check valve, which comprises a valve body and a valve cover, wherein the valve body and the valve cover are connected through a bolt and a nut, a valve seat is arranged on one side of an inlet channel inside the valve body, a filter screen is arranged on the valve body close to one side of the inlet channel, a V-shaped impurity collecting funnel is arranged in the valve body at the lower end of the filter screen, the lower end of the V-shaped impurity collecting funnel is connected with a sewage discharge port arranged at the lower end of the valve body, an upper baffle is arranged in the V-shaped impurity collecting funnel, a gear box is arranged in the valve body, an upper driven gear is arranged on the upper screw sleeve, a lower driven gear is arranged on the lower screw sleeve, a driving gear meshed with the lower driven gear is also arranged in the gear box.

The conventional check valve generally prevents the fluid from flowing back by the elastic force of an elastic member such as a spring, but after a long time of use, the elastic member is often subjected to elastic fatigue, resulting in pressure failure, thereby affecting the sealing effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a check valve that sealing performance is good, its advantage is: the sealing performance is better, can be better avoid the fluid to reveal, can be better avoid the fluid backward flow moreover.

The above technical purpose of the present invention can be achieved by the following technical solutions: a check valve with good sealing performance comprises a valve body, a liquid inlet channel and a liquid outlet channel;

an accommodating cavity is arranged in the valve body, is arranged between the liquid inlet channel and the liquid outlet channel and is communicated with the liquid inlet channel and the liquid outlet channel;

hold the intracavity and rotate to be connected with along vertical direction wobbling swing arm, be connected with sealed liquid inlet channel's sealed valve clack on the swing arm, the opening part that holds the chamber can be dismantled and be connected with sealed valve gap.

Through the technical scheme, the liquid inlet channel is used for allowing fluid to flow in, the liquid outlet channel is used for allowing the fluid to flow out, and the accommodating cavity is used for communicating the liquid inlet channel with the liquid outlet channel; the sealing valve cover is used for sealing the opening of the accommodating cavity so as to prevent fluid from leaking out of the opening of the accommodating cavity, the accommodating cavity is also used for accommodating a swing arm, and the swing arm is used for mounting the sealing valve clack; the sealing valve clack can well swing downwards under the influence of gravity, so that the liquid inlet channel is sealed, and when the pressure of fluid entering the liquid inlet channel can push the sealing valve clack, the fluid can flow into the accommodating cavity and further flow into the liquid outlet channel; when fluid pressure in the liquid inlet channel is not enough to push the sealing valve clack, the sealing valve clack can stably seal the liquid inlet channel, so that fluid backflow can be better avoided.

The utility model discloses further set up to: the one end that the inlet channel is close to liquid outlet channel has seted up the mounting groove, be provided with the sealing valve circle in the mounting groove, this kind of sealing valve circle towards liquid outlet channel's one end and sealed valve clack butt.

Through above-mentioned technical scheme, the mounting groove is used for holding sealed valve circle, the terminal surface and the sealed valve clack butt of sealed valve circle to better improvement sealed effect.

The utility model discloses further set up to: and reinforcing ribs are arranged on the swing arms.

Through the technical scheme, the reinforcing ribs better strengthen the strength of the whole structure of the swing arm, so that the sealing valve clack can be stably attached to the sealing valve ring, and the sealing effect is better improved.

The utility model discloses further set up to: the sealing valve clack comprises a weighting disc made of metal and a sealing rubber layer coated on the outer side of the weighting disc.

Through the technical scheme, the weight of the sealing valve clack is larger due to the weighting disc made of metal, and the weighting disc is more stable when being pressed onto the sealing valve ring; the sealing rubber layer has certain elasticity, and the laminating sealing valve ring that can be better to further improvement sealed valve clack with the sealed effect of inlet channel.

The utility model discloses further set up to: one side of the accommodating cavity far away from the swinging arm is provided with a limit stop for limiting the swinging angle of the swinging arm, and one side of the swinging arm facing the liquid outlet channel is provided with an anti-collision buffer cushion.

Through above-mentioned technical scheme, limit stop is used for restricting the wobbling angle of swing arm, avoids the swing arm horizontal position and the condition that is difficult to the whereabouts, and limit stop can be better simultaneously prevents the inner wall of swing arm striking valve body, has avoided the valve body because the striking condition of damaging.

The utility model discloses further set up to: the valve body both ends integrated into one piece has flange, flange keeps away from one side of valve body and is provided with the location boss, sealed annular has been seted up on the boss of location.

Through the technical scheme, the positioning boss is matched with an external pipeline so that the pipeline and the valve body can be butted more accurately, and the sealing ring groove is used for placing the sealing ring, so that a gap at the joint of the pipeline and the valve body can be sealed, and the sealing performance is ensured; the connecting flange is used for facilitating the connection of the valve body and the pipeline together by using bolts when the valve body is connected with the pipeline.

The utility model discloses further set up to: one side of the sealing valve ring facing the sealing valve clack is provided with a sealing convex ring, the section of the sealing convex ring is semicircular, and a matching annular groove which is complementary with the sealing convex ring is formed in the sealing rubber layer.

Through above-mentioned technical scheme, during sealed bulge loop can be better insert and establish into the cooperation annular to further improvement between sealing rubber layer and the sealing valve circle compactness, improved the sealed effect of valve clack with the inlet channel promptly.

The utility model discloses further set up to: sealed valve gap orientation holds and extends in the chamber has the reference column, the installation annular has been seted up on the outer periphery of reference column, the cover is equipped with the sealing rubber ring on the installation annular.

Through above-mentioned technical scheme, the reference column is inserted and is established into and hold the chamber for sealed valve gap can be more stable with the valve body cooperation, the installation annular is used for placing the sealing rubber ring, so that the clearance shutoff that will be between sealed valve gap and the valve body that the sealing rubber ring can be better is stopped up.

To sum up, the utility model discloses following beneficial effect has:

1. the weighting disc in the sealing valve clack can well drive the sealing rubber layer to be close to the resealing valve ring, so that the liquid inlet channel can be well sealed, and only when the fluid pressure in the liquid inlet channel can push the sealing valve clack to rotate, the fluid can flow into the liquid outlet channel through the liquid inlet channel, so that the backflow of the fluid is well avoided;

2. the positioning column on the sealing valve cover is inserted into the containing cavity, and the sealing valve cover and the gap between the side walls of the containing cavity are sealed and blocked through the sealing rubber ring, so that the sealing effect is better improved.

Drawings

FIG. 1 is a sectional view of the overall structure of the present embodiment;

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Reference numerals: 1. a valve body; 2. a liquid inlet channel; 3. a liquid outlet channel; 4. an accommodating chamber; 5. a swing arm; 6. a sealing valve flap; 7. sealing the valve cover; 8. mounting grooves; 9. sealing the valve ring; 10. reinforcing ribs; 11. a weighting disk; 12. a sealing rubber layer; 13. a limit stop block; 14. a crash cushion; 15. a connecting flange; 16. positioning the boss; 17. sealing the ring groove; 18. a sealing convex ring; 19. matching the ring groove; 20. a positioning column; 21. and sealing the rubber ring.

Detailed Description

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

Example (b):

referring to fig. 1, a check valve with good sealing performance comprises a valve body 1, a liquid inlet channel 2 and a liquid outlet channel 3, wherein the liquid inlet channel 2 and the liquid outlet channel 3 are arranged on the valve body 1, the valve body 1 is integrally cylindrical, the liquid inlet channel 2 and the liquid outlet channel 3 are arranged along the length direction of the valve body 1, and the liquid inlet channel 2 and the liquid outlet channel 3 are respectively arranged at two ends of the valve body 1.

Referring to fig. 1, two ends of a valve body 1 are provided with connecting flanges 15, the connecting flanges 15 and the valve body 1 are integrally cast, a positioning boss 16 extends outwards from one side of the connecting flange 15 away from the valve body 1, a sealing ring groove 17 is formed on the positioning boss 16, and the cross section of the sealing ring groove 17 is trapezoidal; when installing the valve on the pipeline, can at first pack into the sealing washer in sealed annular 17, then with flange 15 and the pipe flange butt joint to last, the sealing washer can be better with the clearance shutoff between pipeline and the valve body 1 to better avoid the fluid to reveal.

Referring to fig. 1, a containing cavity 4 is arranged in a valve body 1, the containing cavity 4 is arranged between a liquid inlet channel 2 and a liquid outlet channel 3, and the containing cavity 4 is communicated with both the liquid inlet channel 2 and the liquid outlet channel 3; the swing arm 5 is rotatably connected in the accommodating cavity 4, the reinforcing rib 10 is integrally formed on the swing arm 5, the integral structural strength of the swing arm 5 can be better enhanced, and the swing arm 5 swings up and down along the vertical direction; the inner wall of the accommodating cavity 4 is welded with a rotating shaft, the axis direction of the rotating shaft is arranged along the horizontal direction, the swing arm 5 is rotatably connected to the rotating shaft, and the swing arm 5 is rotatably connected around the rotating shaft.

Referring to fig. 1 and 2, one end of the swing arm 5 away from the rotating shaft is connected with a sealing valve flap 6, the sealing valve flap 6 comprises a weighting disc 11 and a sealing rubber layer 12, the weighting disc 11 is made of metal, the sealing rubber layer 12 is made of rubber, and the sealing rubber layer 12 is coated on the outer side of the weighting disc 11. A connecting screw rod is welded on one side of the weighting disc 11 close to the swing arm 5, and a screwing nut is matched on the connecting screw rod in a threaded manner; mounting groove 8 has been seted up to inlet channel 2's one end that is close to outlet channel 3, and mounting groove 8 is the circular recess, is provided with sealing valve ring 9 in the mounting groove 8, and the welding of sealing valve ring 9 is at inlet channel 2's inner wall. One side of the sealing valve ring 9 facing the sealing valve clack 6 is integrally formed with a sealing convex ring 18, the section of the sealing convex ring 18 is semicircular, and the sealing rubber layer 12 is provided with a matching annular groove 19 which is complementary with the sealing convex ring 18.

Referring to fig. 1 and 2, the sealing valve flap 6 swings downward under the action of gravity, so that the sealing convex ring 18 is inserted into the matching annular groove 19, and the sealing rubber layer 12 can better seal the liquid inlet channel 2. One side of holding chamber 4 and keeping away from swing arm 5 is provided with limit stop 13, and limit stop 13 welds the inner wall that holds chamber 4, and limit stop 13 is used for restricting the turned angle of swing arm 5. One side of the screwing nut, which is far away from the swing arm 5, is fixedly connected with a crash cushion 14, and the crash cushion 14 is made of rubber; during the use of the valve, fluid enters the liquid inlet channel 2, and then due to the pressure of the fluid, the sealing valve flap 6 is pushed to rotate, so that the sealing valve flap 6 is opened, and the fluid flows out of the liquid outlet channel 3. When the pressure of the fluid in the liquid inlet channel 2 is not enough to push the sealing valve flap 6 to rotate, or no fluid flows in the liquid inlet channel 2, the sealing valve flap 6 rotates downwards under the action of gravity, so that the liquid inlet channel 2 is sealed, and the fluid in the liquid outlet channel 3 can not flow back into the liquid inlet channel 2.

Referring to fig. 1, a sealing valve cover 7 is connected to an opening of the accommodating chamber 4 through a bolt, a positioning column 20 extends from the sealing valve cover 7 to the accommodating chamber 4, an installation ring groove is formed in the outer circumferential surface of the positioning column 20, and a sealing rubber ring 21 is sleeved on the installation ring groove; the sealing rubber ring 21 is an O-shaped ring made of rubber, and the sealing rubber ring 21 can better seal up a gap between the positioning column 20 and the inner wall of the accommodating cavity 4, so that fluid is better prevented from leaking from the sealing valve cover 7.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A check valve with good sealing performance comprises a valve body (1), a liquid inlet channel (2) and a liquid outlet channel (3);

the liquid inlet valve is characterized in that an accommodating cavity (4) is arranged in the valve body (1), the accommodating cavity (4) is arranged between the liquid inlet channel (2) and the liquid outlet channel (3), and the accommodating cavity (4) is communicated with the liquid inlet channel (2) and the liquid outlet channel (3);

hold chamber (4) internal rotation and be connected with along vertical direction wobbling swing arm (5), be connected with sealed valve clack (6) of sealed inlet channel (2) on swing arm (5), the opening part that holds chamber (4) can be dismantled and be connected with sealed valve gap (7).

2. The check valve with good sealing performance as claimed in claim 1, wherein an installation groove (8) is formed at one end of the liquid inlet channel (2) close to the liquid outlet channel (3), a sealing valve ring (9) is arranged in the installation groove (8), and one end of the sealing valve ring (9) facing the liquid outlet channel (3) is abutted to the sealing valve flap (6).

3. A well-sealed check valve according to claim 1, characterized in that said oscillating arm (5) is provided with a reinforcement (10).

4. A good sealing check valve according to claim 2, characterized in that the sealing flap (6) comprises a weighted disc (11) made of metal and a sealing rubber layer (12) covering the outer side of the weighted disc (11).

5. A good sealing non-return valve according to claim 1, characterized in that the side of the receiving chamber (4) remote from the swing arm (5) is provided with a limit stop (13) for limiting the swing angle of the swing arm (5), and the side of the swing arm (5) facing the outlet passage (3) is provided with a crash cushion (14).

6. The check valve with good sealing performance as claimed in claim 1, wherein the valve body (1) is integrally formed with a connecting flange (15) at both ends thereof, a positioning boss (16) is disposed on one side of the connecting flange (15) away from the valve body (1), and a sealing ring groove (17) is disposed on the positioning boss (16).

7. The check valve with good sealing performance is characterized in that a sealing convex ring (18) is arranged on one side, facing the sealing valve clack (6), of the sealing valve ring (9), the cross section of the sealing convex ring (18) is semicircular, and a matching annular groove (19) which is complementary to the sealing convex ring (18) is formed in the sealing rubber layer (12).

8. The check valve with good sealing performance as claimed in claim 1, wherein the sealing valve cover (7) extends to the accommodating cavity (4) to form a positioning column (20), an installation ring groove is formed in an outer circumferential surface of the positioning column (20), and a sealing rubber ring (21) is sleeved on the installation ring groove.