CN216951724U

CN216951724U - Self-sealing ball float valve

Info

Publication number: CN216951724U
Application number: CN202123336552.4U
Authority: CN
Inventors: 刘雪岭; 袁健; 刘翔; 刘志祥; 谭兴宏
Original assignee: YANGZHOU LANXIANG MACHINERY ENGINEERING CO LTD
Current assignee: YANGZHOU LANXIANG MACHINERY ENGINEERING CO LTD
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-07-12
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a self-sealing ball float valve which comprises a flashboard, a shell and a sealing device, wherein the flashboard is arranged in the shell, rollers which are in rolling connection with the flashboard are arranged on the upper side and the lower side of the shell, the rollers are arranged on a roller shaft in a sliding manner, when the water pressure on one side of the flashboard is higher than that on the other side, the flashboard drives the rollers to slide in the axial direction of the roller shaft, the flashboard moves towards one side with low water pressure, and a sealing ring on one side with low water pressure is compressed. The flashboard can move between the front sealing ring and the rear sealing ring according to the height of the water level in a closed state, and the flashboard is abutted against the sealing ring on the low water level side by the pressure of the water level difference to meet the sealing requirement; the clearance of front and back sealing washer is greater than the certain size of flashboard thickness, satisfies the flashboard and can make a round trip to slide between the front and back sealing member, and prevents that silt from blockking up the clearance. The gap for moving the roller is arranged on the roller shaft, so that the roller can rotate around the roller shaft, and the roller can move in the axial direction of the roller shaft to provide space for self-sealing of the flashboard.

Description

Self-sealing ball float valve

Technical Field

The utility model belongs to the technical field of flashboards, and particularly relates to a self-sealing ball float valve.

Background

Because the ball-cock assembly adopts buoyancy as power to open and close the valve, the driving force of comparing hydraulic pressure or electric valve is little. The valve cannot be tightly sealed. The tight sealing mode easily causes the situation that the floating ball valve is blocked and can not act in the opening and closing process. Because the float valve is a non-power valve, the power of the slide between the front and the rear sealing elements of the flashboard can only be achieved by the pressure of water head difference. When the ball float valve is applied to sewage, if the gap between the front sealing piece and the rear sealing piece is smaller, the gap can be reduced in long-time sediment sedimentation to influence the opening and closing actions of the flashboard. Therefore, the gap between the front and rear sealing rings is required to be larger than the thickness of the flashboard by a certain size. The front and rear sealing elements have certain gaps, so that the gate plate can slide back and forth between the front and rear sealing elements to meet the sealing requirement.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is as follows: provides a self-sealing ball-cock with convenient use and good self-sealing effect.

The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a self sealss ball-cock assembly, includes flashboard, casing and sealing device, the flashboard sets up in the casing, sealing device is including setting up the first sealing washer in casing one side and setting up the second sealing washer in the casing opposite side both sides are provided with the gyro wheel with flashboard sliding connection about the casing, the gyro wheel slides and sets up on the roller shaft, and when the water pressure of flashboard one side was greater than the opposite side, the flashboard drove the gyro wheel and slides in the axial of roller shaft, and the flashboard compresses tightly the sealing washer of the little one side of water pressure to the little lateral movement of water pressure.

Preferably, one end of the roller shaft is fixed on one inner side surface of the shell through a fixing seat, and a detachable bolt is arranged on the other side of the roller shaft.

Preferably, the roller shaft is provided with a first shaft shoulder and a second shaft shoulder, the first shaft shoulder is arranged between the bolt and the second shaft shoulder, the diameter of the first shaft shoulder is smaller than that of the second shaft shoulder, the roller is arranged in the first shaft shoulder, and the length of the first shaft shoulder is larger than the thickness of the roller.

Preferably, the second shaft shoulder is arranged between the fixed seat and the first shaft shoulder, and the outer diameter of the second shaft shoulder is larger than the diameter of the inner hole of the roller.

Preferably, the first sealing ring and the second sealing ring are riveted or bonded on the shell, the first sealing ring and the second sealing ring are both provided with step surfaces, and the step surfaces are fitted with the shell.

Preferably, the first sealing ring and the second sealing ring are made of hard rubber or polytetrafluoroethylene.

Preferably, the gap between the first sealing ring and the second sealing ring is larger than the thickness of the brake plate.

Preferably, the roller is provided with a roller groove, the width of the roller groove is larger than the thickness of the gate plate, and the gate plate is arranged in the roller groove.

Preferably, chamfers are arranged at the upper ends of the two side walls of the roller groove, so that the opening at the upper part of the roller groove is larger than the width in the groove.

Has the beneficial effects that: compared with the prior art, the utility model has the following advantages:

(1) the gate plate can move between the first sealing ring and the second sealing ring according to the water level in a closed state, and the gate plate is abutted against the sealing ring on the low water level side by the pressure of the water level difference to meet the sealing requirement;

(2) the gap between the front sealing ring and the rear sealing ring of the utility model is larger than the thickness of the flashboard by a certain size, and the front sealing piece and the rear sealing piece have a certain gap to meet the sealing requirement that the flashboard can slide back and forth between the front sealing piece and the rear sealing piece, and prevent silt from blocking the gap, thereby influencing the opening and closing action of the flashboard.

(3) The gap for moving the roller is arranged on the roller shaft, so that the roller can rotate around the roller shaft, and the roller can move in the axial direction of the roller shaft to provide a space for self-sealing of the flashboard;

(4) the chamfer angle is arranged on the roller groove, so that the gate plate can conveniently enter the roller groove, and the width of the roller groove is slightly larger than the thickness of the gate plate, so that a space is reserved for the movement of the gate plate.

Drawings

FIG. 1 is a schematic view of the external structure of a self-sealing ball float valve;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view taken along line B-B of FIG. 1;

FIG. 4 is a first enlarged view of a portion of FIG. 2;

fig. 5 is a second partial enlarged view of fig. 2.

Detailed Description

The present invention will be further illustrated with reference to the following specific examples, which are carried out in the light of the technical solutions of the present invention, and it should be understood that these examples are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1-3, the self-sealing ball float valve of the present invention comprises a gate plate 4, a housing 1, a sealing device and a driving device, wherein the gate plate 4 is disposed in the housing 1, the driving device comprises a ball float 10 and a transmission mechanism, the ball float 10 is connected to the gate plate 4 through the transmission mechanism, and the ball float 10 floating along with the water level variation drives the gate plate 4 to reciprocate in the housing 1 through the transmission mechanism to open and close a valve port 13. The transmission mechanism comprises a rack 5, a gear 6 and a connecting rod 9, one end of the connecting rod 9 is fixedly connected with a floating ball 10, the other end of the connecting rod 9 is connected with the gear 6 through a main shaft 7, the rack 5 is fixed on the flashboard 4, the gear 6 is meshed with the rack 5, a shaft sleeve 8 is arranged on the shell 1, the main shaft 7 is rotatably arranged in the shaft sleeve 8, the part, extending out of the shell 1, of the main shaft 7 is connected with the connecting rod 9, and the part, extending into the shell 1, of the main shaft fixes the gear 6. According to the utility model, the floating ball 10 on the connecting rod 9 floats up and down along with the change of water level, the connecting rod 9 is driven to rotate the main shaft 7, the gear 6 on the main shaft 7 rotates along with the main shaft 7, and the gear 6 drives the rack 5 to realize the left-right reciprocating motion of the flashboard 4. The engagement of the power structure rack and pinion of the shutter 4 can slide relatively in the radial direction. The gear is fixed on the rotating shaft and cannot move in the radial direction, and the rack 5 is fixed on the gate plate and can move along with the gate plate in the radial direction.

The sealing device comprises a first sealing ring 12a arranged on one side of the shell 1 and a second sealing ring 12b arranged on the other side of the shell 1, wherein the upper side and the lower side of the shell 1 are provided with rollers 2 in rolling connection with the flashboard 4, the rollers 2 are arranged on the roller shaft 3 in a sliding manner, when the water pressure on one side of the flashboard 4 is greater than that on the other side, the flashboard 4 drives the rollers 2 to slide in the axial direction of the roller shaft 3, the flashboard 4 moves towards the side with small water pressure, and the sealing ring on the side with small water pressure is compressed. When the water level on the first seal ring 12a side is higher than the water level on the second seal ring 12b, the water pressure on the shutter plate closing first seal ring 12a side pushes the shutter plate to lean against the second seal ring 12b side, and the water flow direction 12b is blocked to meet the requirement of closing the valve. The reverse is the same.

One end of the roller shaft 3 is fixed on one inner side surface of the shell 1 through a fixed seat 31, and the other side is provided with a detachable bolt 32. The roller shaft 3 is provided with a first shaft shoulder 33 and a second shaft shoulder 34, the first shaft shoulder 33 is arranged between the bolt 32 and the second shaft shoulder 34, the diameter of the first shaft shoulder 33 is smaller than that of the second shaft shoulder 34, the roller 2 is arranged in the first shaft shoulder 33, and the length of the first shaft shoulder 33 is larger than the thickness of the roller 2. The second shoulder 34 is arranged between the fixed seat 31 and the first shoulder 33, and the outer diameter of the second shoulder 34 is larger than the diameter of the inner hole of the roller 2. The roller 2 can rotate on the roller shaft 3 without being tightened, and the roller 2 can slide back and forth in the axial direction of the roller shaft 3, and the roller 2 can slide simultaneously when the shutter 4 moves between the back and forth sealing rings.

As shown in fig. 4, the roller 2 is provided with a roller groove 21, the width of the roller groove 21 is larger than the thickness of the shutter 4, and the shutter 4 is disposed in the roller groove 21. The upper ends of the two side walls of the roller groove 21 are provided with large chamfers 22, so that the opening of the upper part of the roller groove 21 is larger than the width in the groove, the gate plate can play a role in guiding when entering the groove in the opening and closing movement process of the gate plate, the width of the roller groove is slightly larger than the thickness of the gate plate, a space is reserved for the movement of the gate plate, and the gate plate 4 can move back and forth in the roller groove.

The roller shaft 3 is made of stainless steel, so that the roller shaft 3 is prevented from being rusted underwater to influence the rotation and the sliding of the roller 2. The roller 2 is made of hard non-metallic materials, so that a small friction coefficient between the roller 2 and the roller shaft 3 is ensured, and the strength and the wear resistance of the roller 2 are also ensured.

The first sealing ring 12a and the second sealing ring 12b are riveted or bonded to the housing 1, and as shown in fig. 5, the first sealing ring 12a and the second sealing ring 12b are both provided with a stepped surface 14, and the stepped surface 14 is engaged with the housing 4. The first seal ring 12a and the second seal ring 12b are seal rings made of hard rubber or polytetrafluoroethylene. So as to reduce the frictional resistance of the flashboard in the opening and closing process. The plane of flashboard is used as the reference surface of installation sealing member when the equipment, guarantees the depth of parallelism of flashboard and sealed face, guarantees that the flashboard removes and can reach sealed effect with sealed face cooperation.

The gap between the first seal ring 12a and the second seal ring 12b is larger than the thickness of the shutter 4.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. A self-sealing ball float valve, characterized in that: including flashboard (4), casing (1) and sealing device, flashboard (4) set up in casing (1), sealing device is including setting up first sealing washer (12a) and the second sealing washer (12b) of setting at casing (1) opposite side in casing (1) both sides are provided with gyro wheel (2) with flashboard (4) roll connection about casing (1), gyro wheel (2) slide and set up on roller shaft (3), and when the water pressure of flashboard (4) one side was greater than the opposite side, flashboard (4) drive gyro wheel (2) upwards slide at the axle of roller shaft (3), and flashboard (4) are to the little one side motion of water pressure, compress tightly the sealing washer of the little one side of water pressure.

2. The self-sealing ball float of claim 1, wherein: one end of the roller shaft (3) is fixed on one inner side surface of the shell (1) through a fixing seat (31), and a detachable bolt (32) is arranged on the other side of the roller shaft.

3. A self-sealing ball float valve according to claim 2, wherein: the roller shaft (3) is provided with a first shaft shoulder (33) and a second shaft shoulder (34), the first shaft shoulder (33) is arranged between the bolt (32) and the second shaft shoulder (34), the diameter of the first shaft shoulder (33) is smaller than that of the second shaft shoulder (34), the roller (2) is arranged in the first shaft shoulder (33), and the length of the first shaft shoulder (33) is larger than the thickness of the roller (2).

4. The self-sealing float valve of claim 3, wherein: the second shaft shoulder (34) is arranged between the fixed seat (31) and the first shaft shoulder (33), and the outer diameter of the second shaft shoulder (34) is larger than the diameter of an inner hole of the roller (2).

5. The self-sealing ball float of claim 1, wherein: first sealing washer (12a) and second sealing washer (12b) riveting or bond on casing (1), first sealing washer (12a) and second sealing washer (12b) all set up ladder face (14), and ladder face (14) agree with casing (1).

6. The self-sealing ball float of claim 1, wherein: the first sealing ring (12a) and the second sealing ring (12b) are made of hard rubber or polytetrafluoroethylene.

7. The self-sealing float valve of claim 1, wherein: the clearance between the first sealing ring (12a) and the second sealing ring (12b) is larger than the thickness of the flashboard (4).

8. The self-sealing ball float of claim 1, wherein: be provided with gyro wheel groove (21) on gyro wheel (2), the width in gyro wheel groove (21) is greater than the thickness of flashboard (4), flashboard (4) set up in gyro wheel groove (21).

9. The self-sealing ball float of claim 8, wherein: chamfers (22) are arranged at the upper ends of two side walls of the roller groove (21), so that the opening at the upper part of the roller groove (21) is larger than the width in the groove.