CN218000528U - Anti-backflow impact check valve - Google Patents

Abstract

The utility model provides a check valve of anti advection impact relates to check valve technical field, including first casing, the fixed intercommunication of output of first casing has the second casing, the inside of second casing is provided with tilting mechanism, tilting mechanism include with the inside fixed mounting of second casing have the round bar, the fixed surface of round bar installs the installation shell, the surface of installation shell is seted up flutedly, the quantity of recess is four, four the spring, four all have been welded in the inside of recess the other end of spring has all welded the slide bar. The utility model discloses, can slide downwards in the inside of first casing through the rubber dish for flexible gasbag extension and shortening, when shortening flexible gasbag's length, provide the space for the discrepancy end that rivers entered into the second casing, after rivers stop, when flexible gasbag playback, inside gas will not receive the compression again, makes the input of rubber dish resealing second casing.

Description

Anti-backflow impact check valve

Technical Field

The utility model relates to a check valve technical field especially relates to a check valve of adversity-resistant impact.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards.

However, in the prior art, when the existing check valve is used, the reverse flow of water flow can be prevented, but some check valves are not provided with a mechanism resisting the reverse flow impact, if the water amount of the reverse flow of water flow is too large, and when the flow rate is not uniform, the internal sealing structure of the check valve is continuously impacted, the sealing structure of the check valve can be deviated, and the water flow in the check valve can be reversely flowed due to a gap generated by the deviation.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and having too big if the water yield of rivers against the current among the prior art to when the velocity of flow is uneven, continuous inside seal structure who strikes the check valve can take place to squint with the seal structure of check valve and lead to producing the space, thereby leads to the shortcoming of check valve rivers against the current.

In order to realize the purpose, the utility model adopts the following technical scheme: the utility model provides a check valve against adversity and flow impact, includes first casing, the fixed intercommunication of output of first casing has the second casing, the inside of second casing is provided with tilting mechanism, tilting mechanism include with the inside fixed mounting of second casing have the round bar, the outer fixed surface of round bar installs the installation shell, the surface of installation shell is seted up flutedly, the quantity of recess is four, four the spring has all been welded in the inside of recess, four the slide bar has all been welded, four to the other end of spring the sliding block is all installed to the other end of slide bar.

As a preferred embodiment, an overturning barrel is movably sleeved on the outer side of the mounting shell, and a special-shaped groove is formed in the inner wall of the overturning barrel.

The technical effect of adopting the further scheme is as follows: the turnover cylinder can be turned over outside the mounting case.

In a preferred embodiment, the inner wall of the profiled groove is in sliding engagement with the outer surface of the sliding block.

The technical effect of adopting the further scheme is as follows: the profiled slot allows the flip cylinder to rotate clockwise, but in anti-clockwise rotation.

In a preferred embodiment, a lifting mechanism is provided inside the first housing.

The technical effect of adopting the further scheme is as follows: the lifting mechanism can lift up and down under the impact of water flow.

As a preferred embodiment, the elevating mechanism includes a screw block screw-coupled to an inner wall of the first housing.

The technical effect of adopting the further scheme is as follows: the screw block is used for fixing the whole lifting mechanism inside the first shell.

In a preferred embodiment, a telescopic air bag is mounted at the bottom of the thread block, and the outer wall of the telescopic air bag is matched with the inner wall of the first shell.

The technical effect of adopting the further scheme is as follows: when the telescopic air bag is compressed, the rubber disc can move up and down.

As a preferred embodiment, a rubber disc is fixedly connected to the bottom of the telescopic air bag, and the rubber disc is movably connected to the first housing.

The technical effect of adopting the further scheme is as follows: the outer surface of the rubber disc is attached to the inner wall of the first shell.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. the utility model discloses in, can be in the inside lapse of first casing through the rubber disc for flexible gasbag extension with shorten, when shortening flexible gasbag's length, provide the space for rivers enter into the discrepancy end of second casing, after rivers stop, when flexible gasbag playback, inside gas will not receive the compression again, makes the rubber disc seal the input of second casing again.

2. The utility model discloses in, flow most rivers to the upside of second casing through tilting mechanism, further upwards extrude the rubber disc, discharge with higher speed rivers, in the time of the water reflux, a upset section of thick bamboo will continue to carry out clockwise rotation when receiving the rivers impact that the second casing output flows for most rivers flow through the downside of second casing, and the velocity of flow is greater than the second casing upside velocity of flow, blocks up the output at the second casing well with the rubber disc, prevents that rivers from flowing against the current.

Drawings

Fig. 1 is a schematic structural view of a check valve against reverse flow impact according to the present invention;

fig. 2 is a schematic cross-sectional structural view of the check valve against reverse flow impact provided by the present invention;

fig. 3 is a schematic structural view of an overturning barrel of the backflow-resistant check valve provided by the present invention;

fig. 4 is the utility model provides a pair of check valve against advection impact's rubber disc structure sketch map.

Illustration of the drawings:

1. a first housing; 2. a second housing; 3. a lifting mechanism; 4. a turnover mechanism;

31. a thread block; 32. a telescopic air bag; 33. a rubber disc;

41. a round bar; 42. mounting a shell; 43. a groove; 44. a spring; 45. a slide bar; 46. a slider; 47. turning over the drum; 48. a shaped groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Example 1

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a technical solution: the utility model provides a check valve against adversity and flow impact, including first casing 1, the fixed intercommunication of output of first casing 1 has second casing 2, the inside of second casing 2 is provided with tilting mechanism 4, tilting mechanism 4 can only carry out clockwise rotation, can't carry out anticlockwise rotation, tilting mechanism 4 includes that there is round bar 41 with the inside fixed mounting of second casing 2, round bar 41 is used for fixed mounting shell 42, the fixed surface of round bar 41 installs installation shell 42, the surface of installation shell 42 is seted up flutedly 43, the quantity of recess 43 is four, provide the space when recess 43 makes sliding block 46 shrink, spring 44 has all been welded in the inside of four recess 43, spring 44 receives the extrusion, can kick-back to the inside of recess 43, sliding rod 45 has all been welded to the other end of four spring 44, sliding block 46 is all installed to the other end of four sliding rod 45, sliding block 46 and dysmorphism groove 48 looks adaptations.

In this embodiment, when water flows into the inside of the second housing 2, the turning cylinder 47 in the turning mechanism 4 is turned over by the impact of the water flow, the turning cylinder 47 is movably connected with the mounting shell 42, under the action of the spring 44 and the sliding rod 45, the sliding block 46 is contracted into the irregular groove 48 when the turning cylinder 47 is turned over, a part of the water flows out to the upper side of the second housing 2, the rubber disc 33 is further pressed upwards, the water flow is accelerated to be discharged, if the input end of the first housing 1 does not carry out water any more, and when the water discharged from the output end of the second housing 2 flows back, the turning cylinder 47 continues to rotate clockwise when being impacted by the water flow flowing out from the output end of the second housing 2, so that most of the water flows out through the lower side of the second housing 2, the flow rate is greater than the flow rate of the upper side of the second housing 2, so that the top of the rubber disc 33 is pressed, the rubber disc 33 is well blocked at the output end of the second housing 2, and the water flow is prevented from flowing back

Example 2

As shown in fig. 1, fig. 2 and fig. 4, the outer side movable sleeve of the mounting shell 42 is provided with a turnover cylinder 47, a special-shaped groove 48 is formed in the inner wall of the turnover cylinder 47, the inner wall of the special-shaped groove 48 is slidably clamped with the outer surface of the sliding block 46, the inside of the first housing 1 is provided with the lifting mechanism 3, the lifting mechanism 3 mounted inside the first housing 1 can enable water to flow into the inside of the second housing 2, the lifting mechanism 3 comprises a threaded block 31 in threaded connection with the inner wall of the first housing 1, the bottom of the threaded block 31 is provided with a telescopic airbag 32, the telescopic airbag 32 can be compressed by extrusion, the outer wall of the telescopic airbag 32 is matched with the inner wall of the first housing 1, the bottom of the telescopic airbag 32 is fixedly connected with a rubber disc 33, when the rubber disc 33 is not impacted by water flow from the bottom, the input end of the second housing 2 can be blocked, the rubber disc 33 impacted by water flow can slide upwards in the inside of the first housing 1, and the rubber disc 33 is movably connected with the first housing 1.

In this embodiment, internally mounted elevating system 3 of first casing 1 can make rivers flow into the inside of second casing 2, rivers enter into the inside of first casing 1 from the input of first casing 1, the rubber disc 33 that receives rivers impact can upwards slide in the inside of first casing 1, when rubber disc 33 upwards slides, can extrude flexible gasbag 32, make the inside gas of flexible gasbag 32 receive the extrusion, shorten the length of flexible gasbag 32, the business turn over end that enters into second casing 2 for rivers provides the space, after rivers stop, flexible gasbag 32 no longer receives the extrusion, inside gas will not receive the compression, make rubber disc 33 seal the input of second casing 2 again.

The working principle is as follows:

as shown in fig. 1, 2, 3 and 4, firstly, water enters from the input end of the first housing 1, the lifting mechanism 3 is installed inside the first housing 1 to enable the water to flow into the second housing 2, the water enters from the input end of the first housing 1 into the first housing 1, the rubber disc 33 impacted by the water flow slides upwards inside the first housing 1, when the rubber disc 33 slides upwards, the rubber disc 33 is squeezed to the telescopic airbag 32, so that the gas inside the telescopic airbag 32 is squeezed, the length of the telescopic airbag 32 is shortened, a gap is provided for the water flow to enter the inlet end and the outlet end of the second housing 2, after the water flow stops, the telescopic airbag 32 is not squeezed, the gas inside is not compressed any more, so that the rubber disc 33 re-closes the input end of the second housing 2, when the water flow enters into the second housing 2, the turnover cylinder 47 in the turnover mechanism 4 is turned over under the impact of water flow, the turnover cylinder 47 is movably connected with the mounting shell 42, under the action of the spring 44 and the sliding rod 45, when the turnover cylinder 47 is turned over, the sliding block 46 is contracted into the special-shaped groove 48, part of water flows out to the upper side of the second shell 2, the rubber disc 33 is further extruded upwards, the discharge of water flow is accelerated, if the input end of the first shell 1 does not carry out water any more, and when the water discharged from the output end of the second shell 2 flows back, the turnover cylinder 47 continues to rotate clockwise when being impacted by the water flow flowing out from the output end of the second shell 2, so that most of the water flows out through the lower side of the second shell 2, the flow rate is greater than the flow rate of the upper side of the second shell 2, the top of the rubber disc 33 is extruded, the rubber disc 33 is well blocked at the output end of the second shell 2, preventing the water flow from reversely flowing.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (7)

1. A check valve against reverse flow impact, comprising a first housing (1), characterized in that: the fixed intercommunication of the output of first casing (1) has second casing (2), the inside of second casing (2) is provided with tilting mechanism (4), tilting mechanism (4) include with the inside fixed mounting of second casing (2) have round bar (41), the external fixed mounting of round bar (41) has installation shell (42), the surface of installation shell (42) is seted up flutedly (43), the quantity of recess (43) is four, four spring (44), four have all been welded to the inside of recess (43) the other end of spring (44) has all welded slide bar (45), four slide block (46) are all installed to the other end of slide bar (45).

2. The anti-reflux check valve of claim 1, wherein: the outer side of the mounting shell (42) is movably sleeved with a turning cylinder (47), and the inner wall of the turning cylinder (47) is provided with a special-shaped groove (48).

3. The anti-reflux check valve of claim 2, wherein: the inner wall of the special-shaped groove (48) is in sliding clamping connection with the outer surface of the sliding block (46).

4. The anti-reflux check valve of claim 1, wherein: and a lifting mechanism (3) is arranged in the first shell (1).

5. The anti-reflux check valve of claim 4, wherein: the lifting mechanism (3) comprises a thread block (31) in threaded connection with the inner wall of the first shell (1).

6. The anti-reflux check valve of claim 5, wherein: the bottom of screw thread piece (31) is installed flexible gasbag (32), the outer wall of flexible gasbag (32) and the inner wall looks adaptation of first casing (1).

7. The check valve against reverse flow impact of claim 6, wherein: the bottom fixedly connected with rubber disc (33) of flexible gasbag (32), rubber disc (33) and first casing (1) swing joint.

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