CN218377841U - Slow-closing backflow adjusting device for check valve - Google Patents

Abstract

The utility model discloses a backflow adjusting device is slowly closed to check valve, including the inside valve body of seting up the valve pocket, the inner wall top symmetrical structure of valve pocket has the limiting plate, and be provided with the pivot placed in the middle in the valve pocket, rotatable the installing swivel on the outer fringe face of pivot, and be provided with the torsional spring between pivot and the swivel, the symmetrical structure has the valve clack on the outer fringe face of swivel, the limiting plate is kept away from the one end butt of valve pocket inner wall on the outer fringe face of swivel, inner wall bottom one side of valve pocket is constructed there is the baffle, a valve clack that constructs in swivel outer fringe face bottom is constructed towards one side of baffle has the location lug, the constant head tank that supplies the setting of location lug butt is seted up to one side of baffle, the outer fringe face both sides of valve body have all constructed the valve pipe, the one end outer fringe face that the valve body was kept away from to the valve pipe is constructed and is installed flange, this backflow adjusting device is slowly closed to check valve, and rational in infrastructure, be favorable to promoting the life of valve body 1 and ensure its leakproofness, therefore, high practicability is strong.

Description

Check valve slow-closing backflow adjusting device

Technical Field

The utility model belongs to the technical field of the check valve, concretely relates to check valve slowly closes backward flow adjusting device.

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. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The motion mode of the valve clack is divided into a lifting type and a swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can rotate about an axis, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are used in combination, and the safety isolation effect can be achieved. The defects are that the resistance is large and the sealing performance is poor when the valve is closed.

The drive mode of traditional check valve is self-driving, realizes opening and close of valve clack through fluid medium's action promptly, can be that fluid medium backward flow promotes the great impact force of meeting production when valve clack closes to lead to the valve clack to receive the impact of certain degree, cause the valve clack impaired easily under long-term the use, and then influence the leakproofness of check valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a check valve slowly closes backward flow adjusting device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme does:

a slow-closing backflow adjusting device of a check valve comprises a valve body, a valve cavity and a valve core, wherein the valve body is internally provided with the valve cavity;

the inner wall top symmetrical structure of valve pocket has the limiting plate, and is provided with the pivot between two parties in the valve pocket, rotatable mounting has the change on the outer fringe face of pivot, and is provided with the torsional spring between pivot and the change, the symmetrical structure has the valve clack on the outer fringe face of change, the one end butt that the valve pocket inner wall was kept away from to the limiting plate is on the outer fringe face of change.

Furthermore, a baffle plate is arranged on one side of the bottom of the inner wall of the valve cavity, a positioning bump is arranged on one side, facing the baffle plate, of the valve clack arranged at the bottom of the outer edge face of the rotating ring, and a positioning groove for the positioning bump to abut against is formed in one side of the baffle plate.

Further, the outer fringe face both sides of valve body all are constructed valve pipe, the one end outer fringe face that the valve body was kept away from to the valve pipe is gone up to construct and is installed flange.

Furthermore, an annular groove is formed in one side, away from the valve pipe, of the connecting flange, a sealing ring is fixedly bonded in the annular groove, and connecting holes are formed in the connecting flange in an annular array.

Furthermore, a connecting pipe is constructed in the middle of the top of the outer edge face of the valve body, a first flange plate is constructed and mounted on the outer edge face of one end, away from the valve body, of the connecting pipe, a second flange plate is detachably mounted on the upper end face of the first flange plate, and connecting bolts are arranged on the edge of the upper end face of the second flange plate in an annular array, one ends of the connecting bolts can be screwed into the first flange plate.

Compared with the prior art, the utility model discloses following beneficial effect has: benefit from the valve body, the valve pocket, the apparatus further comprises a rotating ring, the torsional spring, the setting of valve clack and limiting plate, when fluid medium circulates from one side of valve body, it can promote the valve clack and deflect, thereby make the swivel revolute the outer fringe face of axle and deflect, realize opening of valve body, when fluid medium circulates from the opposite side of valve body, it can promote the valve clack and deflect, thereby make the swivel revolute the outer fringe face of axle deflect, and drive the torsional spring and twist reverse, thereby realize slowly closing of valve body, avoid assaulting too greatly and cause the valve clack impaired, be favorable to promoting the life and the guarantee its leakproofness of valve body, therefore, the clothes hanger is strong in practicability.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention in fig. 1;

fig. 3 is an enlarged schematic view of a structure a in fig. 2 according to the present invention.

In the figure: 1. a valve body; 2. a valve tube; 3. a connecting flange; 4. connecting holes; 5. a seal ring; 6. a connecting pipe; 7. a first flange plate; 8. a second flange plate; 9. a connecting bolt; 10. a valve cavity; 11. a baffle plate; 12. a rotating shaft; 13. rotating the ring; 14. a torsion spring; 15. a valve flap; 16. a limiting plate; 17. and positioning the projection.

Detailed Description

In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, the utility model is further explained by combining the specific implementation mode.

As shown in fig. 1-3, the slow-closing backflow regulating device for the check valve comprises a valve body 1, wherein a valve cavity 10 is formed inside the valve body 1, a limiting plate 16 is symmetrically formed at the top of the inner wall of the valve cavity 10, a rotating shaft 12 is arranged in the valve cavity 10 in the center, a rotating ring 13 is rotatably mounted on the outer edge surface of the rotating shaft 12, a torsion spring 14 is arranged between the rotating shaft 12 and the rotating ring 13, a valve flap 15 is symmetrically formed on the outer edge surface of the rotating ring 13, one end, far away from the inner wall of the valve cavity 10, of the limiting plate 16 abuts against the outer edge surface of the rotating ring 13, benefiting from the valve body 1, the valve cavity 10, the rotating shaft 12, the rotating ring 13, the torsion spring 14, the valve flap 15 and the limiting plate 16, when a fluid medium flows from one side of the valve body 1, the fluid medium can push the valve flap 15 to deflect, the torsion spring 14 is driven, the slow-closing of the valve body 1 is avoided, the valve flap 15 is prevented from being impacted by large impact, and the sealing property of the valve body 1 is good for guaranteeing the service life of the valve body 1 and the sealing property of being damaged.

As shown in fig. 2 and 3, a baffle plate 11 is formed at the bottom of the inner wall of the valve chamber 10, a positioning protrusion 17 is formed at the side of the valve flap 15 formed at the bottom of the outer edge surface of the rotary ring 13 facing the baffle plate 11, and a positioning groove for abutting the positioning protrusion 17 is formed at one side of the baffle plate 11.

As shown in fig. 1, valve pipe 2 has all been constructed to the outer fringe face both sides of valve body 1, flange 3 has been installed to the structure on the one end outer fringe face that valve body 1 was kept away from to valve pipe 2, flange 3 keeps away from one side of valve pipe 2 and has seted up the ring channel, the bonding is fixed with sealing washer 5 in the ring channel, be annular array in flange 3 and seted up connecting hole 4, the outer fringe face top of valve body 1 has constructed connecting pipe 6 between two parties, flange board one 7 has been installed to the structure on the one end outer fringe face that valve body 1 was kept away from to connecting pipe 6, flange board two 8 are demountable installation to the up end of flange board one 7, the up end border position of flange board two 8 is that annular array is provided with one end and can spirals the connecting bolt 9 of twisting in flange board one 7.

The working principle is as follows: this backflow control device slowly closes of check valve, during the use, through flange 3 joinable external pipe, when fluid medium circulates from one side of valve body 1, it can promote valve clack 15 deflection, thereby make swivel 13 deflect around the outer fringe face of pivot 12, realize opening of valve body 1, when fluid medium circulates from the opposite side of valve body 1, it can promote valve clack 15 deflection, thereby make swivel 13 deflect around the outer fringe face of pivot 12, and drive torsional spring 14 and twist reverse, thereby realize slowly closing of valve body 1, avoid assaulting greatly and cause valve clack 15 impaired, when valve clack 15 deflects and closes, torsional spring 14's torsional resistance is overcome to the impact force that valve clack 15 received, thereby make the locating lug 17 butt of being constructed on valve clack 15 go into open in the constant head tank of locating baffle 11, realize the non return of valve body 1 slowly to close, this backflow control device slowly closes of check valve, and is rational in infrastructure, be favorable to promoting the life of valve body 1 and ensure its leakproofness, therefore, the clothes are strong in practicability.

The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. A slow-closing backflow adjusting device of a check valve comprises a valve body (1) with a valve cavity (10) formed inside;

the method is characterized in that: inner wall top symmetrical construction of valve pocket (10) has limiting plate (16), and is provided with pivot (12) between two parties in valve pocket (10), but the outer fringe face of pivot (12) goes up the rotatable swivel (13) of installing, and is provided with torsional spring (14) between pivot (12) and swivel (13), symmetrical construction has valve clack (15) on the outer fringe face of swivel (13), the one end butt of valve pocket (10) inner wall is kept away from in limiting plate (16) on the outer fringe face of swivel (13).

2. The check valve slow-closing backflow adjusting device according to claim 1, wherein: a baffle (11) is constructed on one side of the bottom of the inner wall of the valve cavity (10), a positioning bump (17) is constructed on one side, facing the baffle (11), of a valve clack (15) constructed on the bottom of the outer edge face of the rotating ring (13), and a positioning groove for abutting the positioning bump (17) is formed in one side of the baffle (11).

3. The check valve slow-closing backflow adjusting device according to claim 1, wherein: the outer fringe face both sides of valve body (1) all are constructed valve pipe (2), flange (3) are installed to the structure on the one end outer fringe face that valve body (1) was kept away from in valve pipe (2).

4. A check valve slow-closing backflow regulating device as claimed in claim 3, wherein: the valve pipe (2) is kept away from one side of flange (3) and has seted up the ring channel, bonds in the ring channel and is fixed with sealing washer (5), be annular array in flange (3) and seted up connecting hole (4).

5. The check valve slow-closing backflow adjusting device according to claim 1, wherein: the outer fringe face top of valve body (1) is constructed between two parties and is had connecting pipe (6), construct on the one end outer fringe face that valve body (1) was kept away from in connecting pipe (6) and install flange board (7), the up end demountable installation of flange board (7) has flange board two (8), the up end border position of flange board two (8) is the annular array and is provided with one end and can screw in connecting bolt (9) in flange board (7).

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