Quick-closing ball valve

Abstract

The utility model relates to a quick-closing ball valve, and aims to solve the technical problems that an eccentric structure design of an upper transmission shaft is rarely adopted by existing similar products to guarantee further sealing in a valve closing state, the structural design of a lower rotating shaft at the bottom is not good enough, and the eccentric structure of the upper transmission shaft is difficult to be matched to realize valve closing sealing. The ball valve is characterized in that a first bearing is arranged on the outer diameter of the transmission shaft in an oval groove in the top of the ball body, and one end of the transmission shaft at the position of the first bearing in the oval groove in the top of the ball body is an eccentric shaft head; the first bearing is packaged in the elliptical groove at the top of the ball body through a ball cover at a notch at the elliptical groove at the top of the ball body; a tension spring sleeve is arranged on the outer diameter of a sleeve head at the bottom of the ball body at the ball head shaft, a tension spring is arranged on the outer diameter of the tension spring sleeve, a protruding column is arranged on one side of the bottom of the ball body on the outer side of the tension spring, the protruding column and a pin column on one side of the protruding column are fixed to the two ends of the tension spring respectively, and the ball head portion of the ball head shaft is buckled to a ball head sleeve in a bottom ball groove in the lower valve body.

Description

Technical Field

[0001] The utility model relates to a motor valve, which is a quick-closing ball valve. Background Art

[0002] Motor valves, also known as electric valves, not only control the opening and closing of valves but also adjust the amount of opening and closing. Electric valves are typically driven by a motor. The opening and closing action requires a certain analog time, which can be adjusted. They are relatively resistant to voltage surges and can operate in various states: open, closed, half-open, and half-closed. They can control the flow of media in pipelines. Some existing motor valves are equipped with spring-like elastic parts, such as application number 202221411850.7 disclosed in the Chinese patent document, application publication date 2022.10.25, and invention name "Smart Fluid Track Ball Valve"; the valve body of the ball valve is provided with a ball assembly, a valve port sealing assembly and a valve seat assembly. The key points are that the top valve port of the valve body is provided with a valve port seat, the middle top of the valve port seat is provided with a bearing seat, and the two ends of the screw rod in the bearing seat are respectively provided with bearings, and the middle bottom of the valve port seat is provided with a piston seat. The piston in the piston seat is provided with a guide rod, one end of the guide rod extends out of the piston and is connected to the top of the annular part of the ball head assembly, and the other end is provided with a rotating sleeve fixed by a nut in the shaft hole, and the screw rod is connected to the rotating sleeve in the guide rod, and an air guide channel is provided between the valve body and the valve port seat between the air outlet side of the valve body and the piston cavity in the piston seat; the motor shaft of the motor assembly is provided with a motor gear, and the screw rod extending out of the bearing seat is meshed with the motor gear through the output gear. However, the above-mentioned products and similar products rarely use the eccentric structure design of the upper transmission shaft to ensure further sealing of the valve closing state. The bottom lower rotating shaft structure design is poor, and it is difficult to cooperate with the eccentric structure of the upper transmission shaft to achieve valve closing sealing. There is a lack of eccentric valve opening and closing limit structure. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the present invention aims to provide a quick-closing ball valve in the art that addresses the technical problems of existing similar products, such as the limited use of an eccentric upper drive shaft structure to ensure a tight seal in the closed state, and the poorly designed lower shaft structure at the bottom, which makes it difficult to cooperate with the eccentric structure of the upper drive shaft to achieve a closed valve seal. This objective is achieved through the following technical solution.

[0004] A quick-closing ball valve, in which a ball is provided in the valve body of the ball valve, and a sealing surface on one side of the spherical surface of the ball is pressed against the valve port sealing component of the orifice of the channel on one side of the air outlet hole in the valve body for sealing, or a sealing surface on one side of the spherical surface of the ball is pressed against the orifice of the channel on one side of the air outlet hole in the valve body for sealing, a ball channel is provided in parallel at the rear of the sealing surface of the ball, a transmission shaft and a ball head shaft are provided at both ends of the central axis of the top and bottom of the ball respectively, the transmission shaft extends out of the valve cover on the top of the valve body and the cover seat on the top of the valve cover in turn, and is fixed with an output tooth by a pin, and the transmission shaft is fixed to the cover by the output tooth limit The valve seat has a second and third bearing on the outer diameter of the drive shaft within the top and bottom grooves of the valve cover, respectively. The stem at one end of the ball shaft inserts into the bottom of the ball, while the ball head at the other end engages with the ball groove at the bottom of the valve body below. The drive shaft at the top of the ball extends out of the valve body and meshes with one of the gears in the reducer assembly via the output gears. Meanwhile, another gear in the reducer assembly meshes with the drive gear on the motor shaft. The output gears, motor, and reducer assembly are housed within a housing on the top of the valve body. A coil spring and microswitch may be located on one side of the reducer assembly within the housing. The key structural design features a first bearing on the outer diameter of the drive shaft within the elliptical groove at the top of the ball. One end of the drive shaft at the first bearing within the elliptical groove is an eccentric shaft head. The first bearing is encapsulated within the elliptical groove at the top of the ball via a ball cap that fits within the notch of the elliptical groove. This eccentric shaft head structure and the corresponding groove design generate an eccentric torque when the valve is closed, enhancing sealing performance.

[0005] The outer diameter of the ball bottom sleeve at the ball shaft is provided with a tension spring sleeve, which is provided with a tension spring. A protrusion is provided on the side of the ball bottom outside the tension spring. The ends of the tension spring are respectively fixed to the protrusion and a pin on one side of the protrusion. The ball head of the ball shaft is snapped into the ball sleeve in the ball groove at the bottom of the valve body. This structure facilitates the reset of the ball by the tension spring after the valve is opened.

[0006] A protruding stop rod is provided on one side of the transmission shaft in the valve body above the ball cover, and a raised stop rib is provided on the bottom side of the valve cover in the valve body at the same height and aligned with the stop rod; when the valve is opened, the output gear rotates through the transmission shaft to drive the ball to rotate, and the stop rod at the transmission shaft hits the stop rib at the valve cover, and the valve is fully opened.

[0007] A raised stopper is provided on one side of the top of the sphere on the other side of the stopper rod of the transmission shaft, and the stopper is set on the top of the sphere or the top of the ball cover; when the valve is closed, the output gear rotates through the transmission shaft to drive the ball to rotate, and the stopper rod at the transmission shaft hits the stopper at the sphere or the ball cover, and the valve is completely closed.

[0008] The stopper protrusion is arranged on one side of the notch ring of the elliptical groove at the top of the spherical body and extends out of the notch of one side edge of the spherical cover.

[0009] The utility model has a reasonable structural design and is convenient to use, install and produce. In particular, the valve closing sealing effect is good and the eccentric torque when closing the valve is large and stable. The utility model is suitable for use as a quick-closing ball valve in a gas meter and a structural improvement of similar products. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a partial cross-sectional structural diagram of an embodiment of the present invention, in which AA cross-section is made, and the dotted line represents the top cover, in which a motor and a reduction assembly are arranged.

[0011] Figure 2 yes Figure 1 AA cross-sectional structural diagram.

[0012] Figure 3 yes Figure 1 Schematic diagram of the top view of the structure, the dotted part of the cover and the internal motor and reduction assembly.

[0013] Figure 4 yes Figure 3 Schematic diagram of the internal structure of the three-dimensional valve body, where the dotted line is the external structure.

[0014] Figure 5 yes Figure 4 Schematic diagram of the internal bottom structure of the valve body, omitting the ball head sleeve, valve body and valve port sealing assembly.

[0015] Serial number and name of the accompanying drawings: 1. Valve body, 2. Ball, 201. Stop block, 202. Boss, 3. First bearing, 4. Stop rod, 5. Drive shaft, 6. Output gear, 7. Cover, 8. Cover seat, 9. Valve cover, 901. Stop rib, 10. Ball cover, 11. Tension spring, 12. Ball head shaft, 13. Ball head sleeve, 14. Tension spring sleeve, 15. Valve port sealing assembly, 16. Pin. Implementation Method

[0016] Now, in conjunction with the accompanying drawings, the structure and use of the utility model are further described. Figure 1-Figure 5As shown, a ball 2 is provided in the valve body 1 of the ball valve, and the sealing surface on one side of the spherical surface of the ball is sealed against the valve port sealing assembly 15 at the orifice of the channel on one side of the air outlet in the valve body. A ball channel is provided in parallel at the rear of the sealing surface of the ball, and a transmission shaft 5 and a ball head shaft 12 are provided at both ends of the central axis of the top and bottom of the sphere respectively. The transmission shaft extends out of the valve cover 9 on the top of the valve body and the cover seat 8 on the top of the valve cover in turn, and is fixed with an output tooth 6 by a pin. The transmission shaft is fixed to the cover seat by the output tooth limit, and the outer diameter of the transmission shaft in the groove at the top and bottom groove of the valve cover is respectively provided with a second bearing and a third bearing. The rod at one end of the ball head shaft is inserted into the bottom of the sphere, and the ball head at the other end of the ball head shaft is buckled into the ball groove at the bottom of the lower valve body; the transmission shaft at the top of the sphere extends out of the valve body and engages with one of the gears of the reducer assembly through the output tooth, while another gear of the reducer assembly engages with the driving tooth at the motor shaft of the motor, and the output tooth, motor and reducer assembly are arranged in the cover shell 7 of the cover seat at the top of the valve body. A first bearing 3 is provided on the outer diameter of the transmission shaft in the elliptical groove at the top of the sphere. One end of the transmission shaft at the first bearing in the elliptical groove at the top of the sphere is an eccentric shaft head. The first bearing is encapsulated in the elliptical groove at the top of the sphere through the ball cover 10 of the notch at the elliptical groove at the top of the sphere; a tension spring sleeve 14 is provided on the outer diameter of the tension spring sleeve at the bottom of the sphere at the ball head shaft, and a tension spring 11 is provided on the outer diameter of the tension spring sleeve. A convex column 202 is provided on one side of the bottom of the sphere outside the tension spring, and the two ends of the tension spring are respectively fixed with the convex column and the pin 16 on one side of the convex column. The ball head of the ball head shaft is buckled into the ball head sleeve 13 in the bottom ball groove in the lower valve body.

[0017] A protruding stopper 4 is provided on one side of the drive shaft within the valve body above the ball cap. A raised stopper 901 is provided on the bottom side of the valve cap within the valve body, aligned with and at the same height as the stopper. When the valve is open, the output teeth rotate through the drive shaft, driving the ball to rotate. The stopper on the drive shaft hits the stopper rib on the valve cap, fully opening the valve. A raised stopper 201 is provided on the top of the ball, symmetrically on the other side of the stopper on the drive shaft. The stopper is located on the top of the ball. When the valve is closed, the output teeth rotate through the drive shaft, driving the ball to rotate. The stopper on the drive shaft hits the stopper on the ball, fully closing the valve. The stopper protrudes from one side of the notch ring in the elliptical groove at the top of the ball and extends out of the notch on one edge of the ball cap.

[0018] The ball valve operates as follows: the motor drives the reducer assembly, which in turn drives the output gear. The eccentric shaft head of the drive shaft rotates the bearing in the elliptical groove of the ball, causing the ball to move backward and away from the sealing surface. When the output gear rotates 180°, the stopper rod contacts the rib on the valve cover, driving the ball to rotate 90°, fully opening the valve. To close the valve in the reverse order, the stopper rod on the drive shaft contacts the stopper on the ball or the ball cover, fully closing the valve.

Claims

1. A quick-closing ball valve, wherein a ball (2) is provided in a valve body (1) of the ball valve, a sealing surface on one side of the spherical surface of the ball is sealed against a valve port sealing component (15) at an opening of a channel on one side of an air outlet in the valve body, or a sealing surface on one side of the spherical surface of the ball is sealed against an opening of a channel on one side of an air outlet in the valve body, a ball channel is provided parallel to the rear of the sealing surface of the ball, a transmission shaft (5) and a ball head shaft (12) are provided at both ends of the central axis of the top and bottom of the ball, respectively, the transmission shaft extends out of the valve cover (9) at the top of the valve body and the cover seat (8) at the top of the valve cover in turn, and is fixed with a transmission shaft by a pin. The output gear (6) is fixed to the cover seat by the output gear limiter, and the outer diameter of the transmission shaft in the top groove and the bottom groove of the valve cover is respectively provided with a second bearing and a third bearing, the rod portion at one end of the ball head shaft is inserted into the bottom of the sphere, and the ball head portion at the other end of the ball head shaft is buckled into the ball groove at the bottom of the lower valve body; the transmission shaft at the top of the sphere extends out of the valve body and engages with one of the gears of the reducer assembly through the output gear, while another gear of the reducer assembly engages with the driving gear at the motor shaft of the motor, and the output gear, the motor and the reducer assembly are arranged in the cover shell (7) of the cover seat at the top of the valve body; it is characterized in that The outer diameter of the transmission shaft (5) in the elliptical groove at the top of the sphere (2) is provided with a first bearing (3), one end of the transmission shaft at the first bearing in the elliptical groove at the top of the sphere is an eccentric shaft head, and the first bearing is encapsulated in the elliptical groove at the top of the sphere through a ball cover (10) at the notch of the elliptical groove at the top of the sphere.

2. The quick-closing ball valve according to claim 1, characterized in that The outer diameter of the bottom sleeve of the ball (2) at the ball head shaft (12) is provided with a tension spring sleeve (14), the outer diameter of the tension spring sleeve is provided with a tension spring (11), a convex column (202) is provided on one side of the bottom of the ball outside the tension spring, and the two ends of the tension spring are respectively fixed to the convex column and the pin column (16) on one side of the convex column, and the ball head of the ball head shaft is buckled into the ball head sleeve (13) in the bottom ball groove in the lower valve body.

3. The quick closing ball valve according to claim 1, characterized in that A protruding stop rod (4) is provided on one side of the transmission shaft (5) in the valve body above the ball cover (10), and a raised stop rib (901) is provided on one side of the bottom of the valve cover (9) in the valve body (1) at the same height and aligned with the stop rod; when the valve is opened, the output gear rotates through the transmission shaft to drive the ball to rotate, and at the same time, the stop rod at the transmission shaft abuts against the stop rib at the valve cover, and the valve is fully opened.

4. The quick-closing ball valve according to claim 3, characterized in that A raised stopper (201) is provided on one side of the top of the sphere (2) on the other side of the stopper rod (4) of the transmission shaft (5), and the stopper is provided on the top of the sphere or the top of the ball cover; when the valve is closed, the output gear rotates through the transmission shaft to drive the sphere to rotate, and at the same time, the stopper rod on the transmission shaft abuts against the stopper on the sphere or the ball cover, and the valve is completely closed.

5. The quick-closing ball valve according to claim 4, characterized in that The stopper (201) is protrudingly arranged on one side of the notch ring of the elliptical groove at the top of the sphere (2) and extends out of a notch on one side edge of the spherical cover (10).

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