Flow-adjustable ball valve

Abstract

The utility model provides a flow-adjustable ball valve which comprises an upper rotating shaft, a lower rotating shaft, a valve rod and a speed reduction driving mechanism, and the top end of the upper rotating shaft is fixedly connected with a valve rod. The upper end and the lower end of the elastic connecting mechanism are movably connected with the bottom end of the upper rotating shaft and the top of the ball body respectively; and the height position of the pressing screw can be adjusted, and the elastic connecting mechanism is pressed down or loosened, so that the elastic connecting mechanism is separated from or inserted into the upper rotating shaft. By additionally arranging the speed reduction driving mechanism, the whole ball valve can control the flow through the valve rod, speed reduction driving can be carried out through the speed reduction driving mechanism, fine adjustment of the rotating angle of an inner ball body is achieved, and flow microquantization and accurate control are conveniently achieved; furthermore, through the design of an elastic connecting mechanism and a pressing screw with the height capable of being adjusted up and down, after the flow is adjusted, connection between the upper rotating shaft and the ball body is removed, and the situation that the valve rod or the rotating disc is collided by the outside, and consequently non-artificial rotating adjustment of the ball body is caused is avoided.

Description

Technical Field

[0001] The utility model relates to a ball valve with adjustable flow rate. Background Art

[0002] A ball valve is a valve whose opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. The valve should generally be installed horizontally in the pipeline. Ball valves are divided into pneumatic ball valves, electric ball valves, and manual ball valves according to the driving method.

[0003] At present, the ball valve in the prior art has a simple adjustment drive structure, which only drives the rotating shaft on the ball to adjust the rotation angle through the valve stem, so that the channel opening is aligned with the water inlet and outlet positions to achieve flow adjustment. The above adjustment method is not convenient for fine-tuning the rotation angle, resulting in poor accuracy of flow adjustment, and cannot be applied to the requirements of precise feeding of raw materials in chemical production, pharmaceutical and food industries. Furthermore, after the ball valve is adjusted, the valve stem of the ball valve is always exposed to the outside world. When in use, it is easily affected by the external environment. If an accidental collision occurs, the flow of the ball valve may be changed unintentionally, affecting the overall use. Utility Model Content

[0004] The utility model provides a flow-adjustable ball valve in order to solve the technical problem of lack of micro-adjustment and precise adjustment.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides a flow-adjustable ball valve, comprising a valve body and a sphere mounted in cooperation with the inside of the valve body, wherein the sphere is provided with a channel; the utility model is characterized in that the utility model further comprises: an upper rotating shaft, wherein the top end of the upper rotating shaft is fixedly connected with a valve stem, and the upper rotating shaft is also connected with a reduction drive mechanism; an elastic connecting mechanism, wherein the upper and lower ends of the elastic connecting mechanism are respectively movably connected with the bottom end of the upper rotating shaft and the top of the sphere; and a pressing screw, wherein the pressing screw can be used to adjust the height position, press down or loosen the elastic connecting mechanism, so that the elastic connecting mechanism is separated from or plugged into the upper rotating shaft.

[0007] Preferably, an upper shaft and a lower shaft are respectively provided at the upper and lower ends of the sphere, and the upper shaft and the lower shaft are rotatably mounted with the upper and lower parts of the valve body respectively, and a second square hole is opened at the top end of the upper shaft.

[0008] Preferably, an upper shell is fixedly mounted on the top of the valve body, and the upper end shaft extends into the upper shell; the elastic connection mechanism is arranged in the upper shell.

[0009] Preferably, the elastic connection mechanism includes a disk body, a first square rod and a second square rod, the bottom end of the first square rod is fixedly connected to the top center of the disk body, the top end of the second square rod is fixedly connected to the bottom center of the disk body, and the second square rod is loosely connected to the second square hole, the first square rod is loosely connected to the first square hole opened at the bottom end of the upper rotating shaft, and a spring is sleeved on the second square rod.

[0010] Preferably, the bottom end of the spring is fixedly connected to the top end of the upper shaft, and the top end of the spring is fixedly connected to the bottom of the disc body.

[0011] Preferably, a cover is fixedly fitted at the top opening of the upper shell, the upper rotating shaft is rotatably mounted on the middle of the cover, a screw hole is provided on the cover, and the screw hole is threadedly connected to the pressing screw.

[0012] Preferably, a concave hole is formed at the bottom end of the hold-down screw, a ball is connected to the concave hole in a clearance fit, and the bottom of the ball contacts the top surface of the disc body.

[0013] Preferably, the reduction drive mechanism includes a first bevel gear and a second bevel gear, the first bevel gear is fixedly sleeved on the upper rotating shaft, the first bevel gear is meshingly connected with the second bevel gear, and the diameter of the first bevel gear is larger than the diameter of the second bevel gear, and a side rotating shaft is fixedly installed in the middle part of the second bevel gear, and the side rotating shaft is rotatably installed on one side of the upper shell.

[0014] Preferably, a rotating disk is fixedly mounted on one end of the side rotating shaft located outside the upper shell, and a circle of anti-slip grooves is arranged on the cylindrical surface of the rotating disk.

[0015] Preferably, a water inlet and a water outlet are respectively provided on both sides of the valve body, and a flange is provided at one end of the water inlet away from the valve body and at one end of the water outlet away from the valve body.

[0016] On the basis of conforming to the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present utility model.

[0017] The positive and progressive effects of the utility model are:

[0018] The above-mentioned flow-adjustable ball valve, by adding a deceleration drive mechanism, enables the entire ball valve to control the flow through the valve stem, and can also be decelerated and driven through the deceleration drive mechanism to achieve fine-tuning of the internal ball rotation angle, thereby facilitating flow micro-quantification and precise control; further, through the design of an elastic connection mechanism and a push-down screw that can adjust the height up and down, after adjusting the flow, by releasing the connection between the upper rotating shaft and the ball, external collision with the valve stem or rotating disk, which would cause non-artificial rotation adjustment of the ball, is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the structure of the interior of the valve body and the interior of the upper shell of the utility model.

[0021] Figure 3 For this utility model Figure 2 Schematic diagram of the structure with the A part in the middle enlarged.

[0022] Description of Reference Numerals

[0023] 1. Valve body; 101. Water inlet; 102. Water outlet; 103. Upper shell; 2. Cover; 201. Screw hole; 3. Upper rotating shaft; 301. First square hole; 4. Valve stem; 5. Side rotating shaft; 6. Rotating disk; 7. Press-down screw; 701. Ball; 8. Sphere; 801. Channel; 802. Lower end shaft; 803. Upper end shaft; 804. Second square hole; 9. First bevel gear; 10. Second bevel gear; 11. Disk; 12. First square rod; 13. Second square rod; 14. Spring. DETAILED DESCRIPTION

[0024] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0025] like Figure 1-3 As shown, a flow-adjustable ball valve comprises a valve body 1 and a ball 8 fitted and installed inside the valve body 1, wherein the ball 8 is provided with a channel 801; it also comprises: an upper rotating shaft 3, wherein a valve stem 4 is fixedly connected to the top of the upper rotating shaft 3, and the upper rotating shaft 3 is also connected to a reduction drive mechanism; an elastic connecting mechanism, wherein the upper and lower ends of the elastic connecting mechanism are movably connected to the bottom end of the upper rotating shaft 3 and the top of the ball 8 respectively; a pressing screw 7, wherein the pressing screw 7 can be used for height adjustment, pressing down or loosening the elastic connecting mechanism, so that the elastic connecting mechanism is separated from or connected to the upper rotating shaft 3.

[0026] An upper shaft 803 and a lower shaft 802 are respectively provided at the upper and lower ends of the sphere 8 , and the upper shaft 803 and the lower shaft 802 are rotatably mounted on the upper and lower parts of the valve body 1 , respectively, and a second square hole 804 is opened at the top of the upper shaft 803 .

[0027] like Figure 2 As shown, the ball 8 is rotatably installed in the valve body 1 by the upper end shaft 803 and the lower end shaft 802, and the ball 8 is cooperatively installed in the valve body 1. By driving the ball 8 to rotate, the position of its channel 801 is adjusted, and the overlapping area of ​​the channel 801 and the water inlet 101 and the water outlet 102 on both sides of the valve body 1 is adjusted to achieve flow adjustment and opening and closing adjustment.

[0028] like Figure 2 As shown, an upper shell 103 is fixedly installed on the top of the valve body 1, and the upper end shaft 803 extends into the upper shell 103; the elastic connection mechanism is arranged in the upper shell 103; the interior of the upper shell 103 is used for the installation of the elastic connection mechanism and the first bevel gear 9 and the second bevel gear 10 of the reduction transmission.

[0029] The elastic connection mechanism includes a disk body 11, a first square rod 12 and a second square rod 13, the bottom end of the first square rod 12 is fixedly connected to the top center of the disk body 11, the top end of the second square rod 13 is fixedly connected to the bottom center of the disk body 11, and the second square rod 13 is connected to the second square hole 804 with a clearance fit, the first square rod 12 is connected to the first square hole 301 opened at the bottom end of the upper rotating shaft 3 with a clearance fit, and a spring 14 is sleeved on the second square rod 13; the bottom end of the spring 14 is fixedly connected to the top end of the upper end shaft 803, and the top end of the spring 14 is fixedly connected to the bottom of the disk body 11.

[0030] By means of different downward pressing positions of the elastic connection mechanism and the elastic force of the spring 14 , the height positions of the plate body 11 , the first square rod 12 and the second square rod 13 can be adjusted.

[0031] The top opening of the upper shell 103 is fixedly fitted with a cover 2, the upper shaft 3 is rotatably mounted with the middle of the cover 2, a screw hole 201 is provided on the cover 2, and the screw hole 201 is threadedly connected with the push-down screw 7. The bottom end of the push-down screw 7 is provided with a concave hole, and a ball 701 is connected with the concave hole in a clearance fit, and the bottom of the ball 701 contacts the top surface of the disk body 11.

[0032] The pressing position of the elastic connection mechanism is adjusted by adjusting the height position of the pressing screw 7 in the screw hole 201 to achieve different adjustment. A ball 701 is provided therein. When adjusting the flow rate, the disc body 11 rotates to perform rolling friction with the ball 701.

[0033] The reduction drive mechanism includes a first bevel gear 9 and a second bevel gear 10, the first bevel gear 9 is fixedly sleeved on the upper rotating shaft 3, the first bevel gear 9 is meshingly connected with the second bevel gear 10, and the diameter of the first bevel gear 9 is larger than the diameter of the second bevel gear 10, and a side rotating shaft 5 is fixedly installed in the middle of the second bevel gear 10, and the side rotating shaft 5 is rotatably installed on one side of the upper shell 103; a rotating disk 6 is fixedly installed on one end of the side rotating shaft 5 located outside the upper shell 103, and a circle of anti-slip grooves is provided on the cylindrical surface of the rotating disk 6.

[0034] Through the meshing transmission of the first bevel gear 9 and the second bevel gear 10, when the side rotating shaft 5 is rotated, the upper rotating shaft 3 can be driven to rotate.

[0035] A water inlet 101 and a water outlet 102 are respectively disposed on both sides of the valve body 1 , and a flange is disposed on one end of the water inlet 101 away from the valve body 1 and on one end of the water outlet 102 away from the valve body 1 .

[0036] Instructions for use: When the entire ball valve is in use, the flanges at the water inlet 101 and the water outlet 102 are used to connect to the external pipe ports, and the ball valve as a whole is used to control the flow and opening and closing of the connection;

[0037] When adjusting the flow rate and opening and closing, it is specifically achieved by driving the upper rotating shaft 3 to rotate. By pulling the valve stem 4, the upper rotating shaft 3 can be rotated; by twisting the rotating disk 6, the side rotating shaft 5 can be rotated, and the upper rotating shaft 3 can also be rotated through the meshing transmission between the first bevel gear 9 and the second bevel gear 10. The upper rotating shaft 3 can be driven to rotate by the above two methods;

[0038] When the upper rotating shaft 3 rotates, the first square rod 12, the disc 11 and the second square rod 13 rotate together with the upper rotating shaft 3, and the second square rod 13 drives the upper end shaft 803, the sphere 8 and the lower end shaft 802 to rotate together, so as to adjust the rotation angle of the sphere 8, thereby adjusting the overlap area between the channel 801 port and the water inlet 101 and the water outlet 102, and adjusting the flow rate;

[0039] After the flow rate is adjusted, the pressing screw 7 is turned to make the screw threaded about the screw hole 201, and the pressing screw 7 moves downward until the head of the pressing screw 7 contacts the top of the cover 2. When the pressing screw 7 moves downward, the pressing disc 11 moves downward, and the compression spring 14 is elastically deformed, and the second square rod 13 moves toward the inside of the second square hole 804, and the first square rod 12 is pulled out of the first square hole 301 to achieve separation; the connection between the upper rotating shaft 3 and the upper end shaft 803 is released; when the valve stem 4 or the rotating disc 6 is collided with from the outside, the ball 8 will not be caused to rotate;

[0040] When re-regulating the flow rate, the pressing screw 7 is screwed on the screw hole 201 by turning the pressing screw 7, and the pressing screw 7 moves upward to loosen the disk body 11. The upper part of the disk body 11 loses the resistance and presses downward, and the rotating disk 6 is rotated to rotate the upper shaft 3. The first square hole 301 rotates with the upper shaft 3. When it is aligned with the first square rod 12, the compression elastic force of the spring 14 drives the disk body 11, the first square rod 12 and the second square rod 13 to move upward together, so that the first square rod 12 is inserted into the first square hole 301, and the upper shaft 3 and the upper end shaft 803 are reconnected.

[0041] The utility model is not limited to the above-mentioned embodiments. Any changes in shape or structure are within the protection scope of the utility model. The protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the utility model, but these changes and modifications are within the protection scope of the utility model.

Claims

1. A flow-adjustable ball valve, comprising a valve body (1) and a ball (8) mounted in cooperation with the valve body (1), wherein the ball (8) is provided with a channel (801); characterized in that: Also includes: An upper rotating shaft (3), the top end of which is fixedly connected to a valve stem (4), and the upper rotating shaft (3) is also connected to a speed reduction drive mechanism; An elastic connection mechanism, wherein the upper and lower ends of the elastic connection mechanism are movably connected to the bottom end of the upper rotating shaft (3) and the top of the sphere (8) respectively; A pressing screw (7) is used to adjust the height position, press down or loosen the elastic connection mechanism, and separate or plug the elastic connection mechanism from the upper rotating shaft (3).

2. The flow-adjustable ball valve according to claim 1, characterized in that: An upper shaft (803) and a lower shaft (802) are respectively provided at the upper and lower ends of the sphere (8); the upper shaft (803) and the lower shaft (802) are respectively rotatably mounted on the upper and lower parts of the valve body (1); and a second square hole (804) is provided at the top end of the upper shaft (803).

3. The flow-adjustable ball valve according to claim 2, characterized in that: An upper shell (103) is fixedly mounted on the top of the valve body (1), and the upper end shaft (803) extends into the upper shell (103); the elastic connection mechanism is arranged in the upper shell (103).

4. The flow-adjustable ball valve according to claim 3, characterized in that: The elastic connection mechanism comprises a disk body (11), a first square rod (12) and a second square rod (13); the bottom end of the first square rod (12) is fixedly connected to the top center of the disk body (11); the top end of the second square rod (13) is fixedly connected to the bottom center of the disk body (11); the second square rod (13) is loosely connected to the second square hole (804); the first square rod (12) is loosely connected to the first square hole (301) provided at the bottom end of the upper rotating shaft (3); and a spring (14) is sleeved on the second square rod (13).

5. The flow-adjustable ball valve according to claim 4, characterized in that: The bottom end of the spring (14) is fixedly connected to the top end of the upper shaft (803), and the top end of the spring (14) is fixedly connected to the bottom of the disk body (11).

6. The flow-adjustable ball valve according to claim 4, characterized in that: A sealing cover (2) is fixedly mounted at the top opening of the upper shell (103), the upper rotating shaft (3) is rotatably mounted on the middle of the sealing cover (2), a screw hole (201) is provided on the sealing cover (2), and the screw hole (201) is threadedly connected to the pressing screw (7).

7. The flow-adjustable ball valve according to claim 6, characterized in that: A concave hole is formed at the bottom end of the pressing screw (7), a ball (701) is connected to the concave hole in a clearance fit, and the bottom of the ball (701) contacts the top surface of the disk body (11).

8. The flow-adjustable ball valve according to claim 1, characterized in that: The deceleration drive mechanism comprises a first bevel gear (9) and a second bevel gear (10); the first bevel gear (9) is fixedly sleeved on the upper rotating shaft (3); the first bevel gear (9) is meshingly connected with the second bevel gear (10); the diameter of the first bevel gear (9) is larger than the diameter of the second bevel gear (10); a side rotating shaft (5) is fixedly installed in the middle of the second bevel gear (10); the side rotating shaft (5) is rotatably installed with one side of the upper housing (103).

9. The flow-adjustable ball valve according to claim 8, characterized in that: A rotating disk (6) is fixedly mounted on one end of the side rotating shaft (5) located outside the upper shell (103), and a circle of anti-slip grooves is arranged on the cylindrical surface of the rotating disk (6).

10. The flow-adjustable ball valve according to claim 1, characterized in that: A water inlet (101) and a water outlet (102) are respectively provided on both sides of the valve body (1), and a flange is provided at one end of the water inlet (101) away from the valve body (1) and at one end of the water outlet (102) away from the valve body (1).

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