CN217234509U - Slow-closing check valve with side flap - Google Patents

Abstract

The utility model relates to the technical field of valves, and discloses a slow-closure check valve with auxiliary flaps, which comprises a valve body and a rocker arranged in the valve body, wherein the rocker is connected with a valve flap, the valve flap is pressed close to the valve wall at the water inlet side of the valve body and is provided with an installation groove inwards, a torsional spring is arranged in the installation groove, the torsional spring is connected with an auxiliary valve flap which is also positioned in the installation groove, and the auxiliary valve flap is taken in or popped out of the installation groove under the action of the torsional spring according to the switching state of the valve flap; the utility model has the characteristics of prevent the bite, the shock attenuation, eliminate the water hammer.

Description

Slow-closing check valve with auxiliary valve

Technical Field

The utility model relates to the technical field of valves, concretely relates to take slow-closing check valve of vice lamella.

Background

The check valve is a common valve installed in each pipeline and is used for preventing the backflow of fluid in the pipeline.

At present, when the check valve is installed in a pipeline for passing unclean water, as the unclean water generally contains more impurities, the check valve may be clamped into a rocker in the operation process to cause the situation that a main flap is difficult to close or cannot be closed in the closing process, so that the situation of water backflow in the whole pipeline system is easily caused, a considerable part of water flows back to a water inlet side through the check valve to influence the normal water supply amount of the whole pipeline system, and if the check valve is used in a double-pump pipeline system, the situation of autorotation of a standby pump body is easily caused due to the large backflow of the water, so that the pump body is seriously damaged and economic loss is caused; in addition, traditional check valve is owing to not having buffer when closing, has just produced violent vibration to the process of just striking for the valve clack sealing surface receives the damage easily, also makes each part of check valve very easily drop, and in addition, because the closing process is too fast and violent, very easily produces the water hammer phenomenon, makes this pipeline just corroding produce the pipe wall sand hole under the water hammer effect more easily.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a take slow-closure check valve of vice lamella.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a take slow check valve that closes of vice lamella, includes the valve body and locates the rocker in the valve body, has connect the main lamella on the rocker, the main lamella is pressed close to and is inwards seted up the mounting groove on the valve wall of valve body side of intaking, is equipped with the torsional spring in the mounting groove, has connect the vice lamella that also is located the mounting groove on the torsional spring, and vice lamella is according to the on-off state income of main lamella or pop out the mounting groove under the effect of torsional spring.

Preferably, when the main flap is in an open state, the auxiliary flap is popped out of the mounting groove under the action of the torsion spring, and the posture of the popped auxiliary flap is perpendicular to the flow direction of water.

Preferably, the top of the auxiliary flap is arranged in a notch higher than the mounting groove.

Preferably, a sealing surface of the valve body is provided with a limit step which is matched with the valve body of which the auxiliary flap is higher than the mounting groove part.

Preferably, an elastic part is arranged in the limiting step, and the end part of the elastic part far away from the water inlet side of the valve body horizontally extends out of the limiting step.

Preferably, a rubber pad is further arranged on the valve wall of the valve body.

Preferably, a first magnet is arranged on the valve wall of the auxiliary valve close to the side of the mounting groove, a second magnet which is magnetically repellent to the first magnet is arranged in the groove wall of the mounting groove, and the first magnet and the second magnet are arranged in a corresponding mode when the auxiliary valve is accommodated in the mounting groove.

Compare prior art, the utility model has the advantages of:

1. the utility model arranges the torsion spring and the auxiliary flap on the valve wall of the main flap close to the water inlet side of the valve body, the auxiliary flap can pop out of the mounting groove when the main flap is in an open state under the action of the torsion spring, water flow is introduced into the valve body, and the water flow direction flows from the water inlet side of the valve body to the water outlet side of the valve body, the auxiliary flap can be recovered into the mounting groove again due to water flow impact, but has the tendency of popping out under the torsion action of the torsion spring, when the water flow in the valve body disappears, the auxiliary flap can pop out of the mounting groove under the action of the torsion spring, at the moment, water flow is introduced into the valve body, and the water flow direction flows from the water outlet side of the valve body to the water inlet side of the valve body, the water flow can impact the auxiliary flap, and the auxiliary flap gives external force to the water inlet side direction of the valve body to move towards the water inlet side of the valve body in the process of impacting, the auxiliary flap can drag the main flap to move towards the water inlet side of the valve body after being impacted, the auxiliary main valve is used for closing operation, compared with the prior art, the main valve is driven to close by utilizing the impact force of the reflowing water flow, and the auxiliary main valve has the advantages of stable and reliable structure and jam prevention.

2. The utility model discloses a set up spacing ladder, and set up the elastic component in spacing ladder, vice lamella can collide with the elastic component when moving to pressing close to valve body intaking side direction under the water impact effect, the elastic component can play the cushioning effect for the motion of vice lamella through the elasticity of self, thereby can avoid follow-up vice lamella to drive the main lamella motion, the main lamella appears just striking to the steel with the sealed face of valve body, it is not fragile with the sealed face of main lamella to protect the valve body, and can reduce the holistic vibration of valve body, compare in prior art, have the advantage of each parts life of extension.

3. The utility model discloses an it connects vice lamella on the main lobe to set up the torsional spring, and set up first magnet and second magnet on main lobe and vice lamella respectively, make the main lobe when nature closed condition, the force that the rocker provided for the main lobe can't overcome the elasticity of torsional spring and the repulsion that produces between first magnet and the second magnet, make the main lobe can keep little open mode when nature closed condition, until the water impact main lobe that has the refluence, elasticity and magnetic force can just be overcome to the main lobe and magnetic force is closed completely, reserve out buffer space for the closing of main lobe, with this production that prevents the water hammer that can be fine.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention in a natural closed state;

fig. 2 is a schematic structural view of the main lobe and the auxiliary main lobe when the utility model is in a natural closing state;

FIG. 3 is a schematic view of the structure of the present invention when it is opened;

FIG. 4 is a schematic structural view of the present invention when it is closed by water flow impact;

FIG. 5 is a schematic structural view of a middle flap of the present invention;

fig. 6 is a cross-sectional view of the middle main lobe of the present invention.

Reference numerals are as follows: 1. a valve body; 2. a rocker; 3. a main lobe; 4. mounting grooves; 5. a torsion spring; 6. a side flap; 7. a limiting step; 8. an elastic member; 9. a rubber pad; 10. a first magnet; 11. a second magnet; a. and a balancing weight.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example (b): referring to fig. 1 to 3, the present embodiment provides a slow-closing check valve with an auxiliary flap, including a valve body 1 and a rocker 2 disposed in the valve body 1, the rocker 2 is connected with a main flap 3, a mounting groove 4 is inwardly disposed on a valve wall of the main flap 3 close to a water inlet side of the valve body 1, a torsion spring 5 is disposed in the mounting groove 4, the torsion spring 5 is connected with an auxiliary flap 6 also disposed in the mounting groove 4, in the present embodiment, a left end of the auxiliary flap 6 is connected to the torsion spring 5, and the auxiliary flap 6 is retracted into or ejected out of the mounting groove 4 under the action of the torsion spring 5 according to an opening and closing state of the main flap 3; when the main valve 3 is in an opening state, the auxiliary valve 6 moves clockwise under the action of the torsion spring 5 to pop out of the mounting groove 4, and the posture of the popped auxiliary valve 6 is vertical to the flow direction of water flow, so that the impact force of the water flow on the subsequent auxiliary valve 6 is ensured to be maximum, and sufficient auxiliary force can be provided for the main valve 3; when the main flap 3 is in a closed state, the auxiliary flap 6 covers the valve wall on the water inlet side of the valve body 1 along with the main flap 3, and meanwhile, in order to prolong the service life of the double-flap check valve, in the implementation, the auxiliary flap 6 is arranged in a notch with the top part higher than the mounting groove 4, meanwhile, a limiting step 7 matched with a valve body of the part of the auxiliary flap 6 higher than the mounting groove 4 is arranged on the sealing surface of the valve body 1, so that the valve body of the part of the auxiliary flap 6 higher than the mounting groove 4 can enter the limiting step 7 when the main flap 3 is in the closed state under the impact of water flow, the valve body of the rest part of the auxiliary flap 6 can be accommodated in the mounting groove 4, and an elastic part 8 is arranged in the limiting step 7, wherein the elastic part 8 is a spring common in the prior art; the elastic piece 8 is arranged so that when the auxiliary flap 6 is in a natural closing state of the main flap 3, the valve body of the part of the auxiliary flap 6 higher than the mounting groove 4 can not completely extrude the elastic piece 8, namely the elastic piece 8 has an elastic force which can support the auxiliary flap 6 and the main flap 3 to a certain distance away from the water inlet side of the valve body 1, so that the main flap 3 can not completely cover the sealing surface of the valve body 1 when in the natural closing state; when the water flow of the water flow direction flowing to the water inlet side of the valve body 1 from the water outlet side of the valve body 1 is introduced into the valve body 1, the main flap 3 moves towards the direction close to the auxiliary flap 6 under the action of the water flow, the auxiliary flap 6 can completely extrude the elastic piece 8 under the pushing of the main flap 3, so that the elastic piece 8 can offset certain impact from the water flow for the sealing surface of the main flap 3 and the sealing surface of the valve body 1, thereby playing a damping role for the main flap 3 and the valve body 1, prolonging the service lives of the main flap 3 and the valve body 1, and the main flap 3 can completely cover the sealing surface of the valve body 1 under the action of the water flow, so as to play a role in blocking the backflow water flow to continuously flow into the water inlet of the valve body 1.

Through the arrangement, in the actual use process, when water flows into the valve body 1 and the water flow direction is from the water inlet side of the valve body 1 to the water outlet side of the valve body 1, the auxiliary flap 6 and the main flap 3 move in the direction far away from the water inlet side of the valve body 1 under the action of the water flow, the main flap 3 becomes in an open state under the action of the water flow, the auxiliary flap 6 cannot be ejected outwards from the installation groove 4 under the action of the water flow, when the water flow disappears in the valve body 1 and the backflow water flow does not arrive, the auxiliary flap 6 is ejected outwards from the installation groove 4 under the action of the spring, at the moment, if the rocker 2 is not blocked, the main flap 3 moves towards the water inlet side of the valve body 1 under the action of the rocker 2, so as to push the auxiliary flap 6 to move along with the main flap 3, the main flap 3 is covered back to the valve wall on the water inlet side of the valve body 1 under the action of the rocker 2, but certain allowance is left with the valve wall on the water inlet side of the valve body 1 under the action of the elastic piece 8, when the main flap 3 is impacted by the backflow water flow, the main flap 3 can completely cover the valve wall on the water inlet side of the valve body 1 under the impact of the water flow so as to prevent the backflow water flow from flowing out from the water inlet of the valve body 1, the auxiliary flap 6 can be positioned in the limiting step 7 and completely extrude the elastic part 8 of the valve body 1 which is higher than the mounting groove 4 under the action of the main flap 3, and the rest part of the valve body is accommodated in the mounting groove 4, if the rocker 2 is blocked and stuck, when the main flap 3 cannot be well driven to move, at the moment, the backflow water flow can flow into the valve body 1, because the backflow water flow direction flows to the water inlet side of the valve body 1 from the water outlet side of the valve body 1, the auxiliary flap 6 can give an external force to move towards the direction close to the water inlet side of the valve body 1 when impacting the auxiliary flap 6, the main flap 3 can be dragged to move towards the water inlet side of the valve body 1 by the auxiliary flap 6 after being impacted, the auxiliary valve 3 is used for closing operation, and the backflow water flow is prevented from continuously flowing into the water inlet of the valve body 1; and when vice lamella 6 moves in order to drive main lamella 3 and close to valve body 1 side direction of intaking and close up, vice lamella 6 can further get into spacing ladder 7 earlier and can hit with great speed and hit on elastic component 8, and elastic component 8 can be fine through the cushion nature that self possessed unloads the impact force that is brought by vice lamella 6.

For further preventing that damage from appearing in valve body 1 and main lamella 3, still be equipped with rubber pad 9 on the valve wall of valve body 1, rubber pad 9 locates main lamella 3 and is in the position department of receiving the valve wall of valve body 1 and the contact of main lamella 3 when water impact open mode under, through the setting of rubber pad 9, main lamella 3 becomes open mode under the impact of rivers time, rubber pad 9 can replace valve body 1's valve wall and main lamella 3 to contact, rubber pad 9 has the cushioning nature that self can be fine and removes the impact force that is brought by main lamella 3, thereby can be fine prevent that damage from appearing in valve body 1 and main lamella 3.

In order to improve the reliability of the check valve, a first magnet 10 is arranged on the valve wall of the auxiliary flap 6 close to the side of the mounting groove 4, a second magnet 11 which is magnetically repulsive to the first magnet 10 is arranged in the groove wall of the mounting groove 4, the positions of the first magnet 10 and the second magnet 11 are correspondingly arranged when the auxiliary flap 6 is accommodated in the mounting groove 4, through the arrangement of the first magnet 10 and the second magnet 11, the first magnet 10 and the second magnet 11 generate repulsive force mutually when the auxiliary flap 6 is accommodated in the mounting groove 4, so that an external force which is popped out of the mounting groove 4 is applied to the auxiliary flap 6, the auxiliary flap 6 can be further guaranteed to be popped out of the mounting groove 4 normally, the phenomenon that the auxiliary flap 3 is difficult to generate jam or deadly is guaranteed, and the reliability of the check valve is improved; moreover, the end part of the auxiliary flap 3 far away from the torsion spring 5 can be provided with a balancing weight 9 in an embedded manner, so that the auxiliary flap 6 can be further ensured to be normally popped out from the mounting groove 4, the phenomenon of jamming or deadlocking of the auxiliary flap 3 is ensured to be difficult to occur, the auxiliary flap 6 can be ensured to work for a long time, and the normal work can be continued after the elasticity of the torsion spring 5 and the magnetic force of the first magnet 10 and the second magnet 11 are invalid; meanwhile, in this embodiment, the torsion spring 5, the first magnet 10, the second magnet 11 and the elastic member 8 are arranged such that when the main flap 3 is in the naturally closed state, the force provided by the rocker 2 for the main flap 3 cannot overcome the elastic force of the torsion spring 5 and the repulsive force generated between the first magnet 10 and the second magnet 11, so that the main flap 3 can be kept in the slightly opened state in the naturally closed state to form an angle b, and the elastic force of the elastic member 8 can make the secondary flap 6 not enter the limiting step 7 under the action of the elastic force of the torsion spring 5 and the repulsive force between the first magnet 10 and the second magnet 11 to form an angle a, until the water flowing backwards strikes the main flap 3, the main flap 3 cannot overcome the elastic force and the magnetic force to push the secondary flap 6 to be completely closed, a buffer space is reserved for closing the main flap 3 at the angles a and b, and during closing of the main flap 3, due to the elastic force of the torsion spring 5, The repulsion between the first magnet 10 and the second magnet 11 and the elastic force of the elastic member 8 can make the closing action of the main flap 3 and the auxiliary flap 6 slow, so as to realize slow closing, thereby being capable of well preventing water hammer.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", 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 simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The above is only the typical example of the utility model, in addition, the utility model can also have other multiple concrete implementation manners, and the technical scheme that all adopt equivalent replacement or equivalent transform to form all falls within the scope of the utility model.

Claims (7)

1. The utility model provides a take slow stop check valve of vice lamella, includes valve body (1) and locates rocker (2) in valve body (1), has connect main lamella (3), its characterized in that on rocker (2): the valve body (1) is pressed close to in main lamella (3) and inwards seted up mounting groove (4) on intaking the valve wall of side, is equipped with torsional spring (5) in mounting groove (4), has connect vice lamella (6) that also are located mounting groove (4) on torsional spring (5), and vice lamella (6) are according to the on-off state income of main lamella (3) or pop out mounting groove (4) under the effect of torsional spring (5).

2. The slow-closing check valve with the side flap of claim 1, which is characterized in that: when the main valve (3) is in an opening state, the auxiliary valve (6) is popped out of the mounting groove (4) under the action of the torsion spring (5), and the posture of the popped auxiliary valve (6) is perpendicular to the flow direction of water.

3. The slow-closing check valve with the side flap of claim 1, which is characterized in that: the top of the auxiliary valve (6) is arranged higher than the notch of the mounting groove (4).

4. The slow-closing check valve with the side flap of claim 3, characterized in that: and a sealing surface of the valve body (1) is provided with a limiting step (7) which is matched with the valve body of the part of the auxiliary valve (6) higher than the mounting groove (4).

5. The slow-closing check valve with the side flap of claim 4, characterized in that: still be equipped with elastic component (8) in spacing ladder (7), elastic component (8) are kept away from the valve body (1) and are intake the tip level of side and stretch out outside spacing ladder (7).

6. The slow-closing check valve with the side flap of claim 1, which is characterized in that: and a rubber pad (9) is also arranged on the valve wall of the valve body (1).

7. The slow-closing check valve with the side flap of claim 2, characterized in that: the valve wall that vice lamella (6) are pressed close to mounting groove (4) side is equipped with first magnet (10), is equipped with in the cell wall of mounting groove (4) second magnet (11) that repulse with first magnet (10) magnetism, and first magnet (10) and second magnet (11) position are corresponding setting when vice lamella (6) are in income mounting groove (4).

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