C-shaped eccentric ball valve

Abstract

Connecting pipes are fixedly connected to the left end and the right end of a valve body, a vertical pipe and a supporting seat are fixedly connected to the upper end and the lower end of the valve body respectively, a C-shaped ball is arranged in the valve body, rotating shafts are fixedly connected to the two ends of the C-shaped ball, and the two rotating shafts are rotationally installed in the vertical pipe and the supporting seat respectively. Wherein one rotating shaft is provided with a worm gear, the supporting seat is provided with a first protective shell and a second protective shell, a worm is arranged in the first protective shell and the second protective shell, the worm is meshed with the worm gear, one end of the worm is fixedly connected with a rocking wheel, one rotating shaft is provided with a pointer, the first protective shell is provided with angle scale marks, and the second protective shell is provided with angle scale marks. And the pointer is correspondingly matched with the angle scale marks. According to the ball valve, the C-shaped ball body is driven to drive the pointer to rotate on the angle scale line to indicate the corresponding angle, visual ball valve opening information can be provided for operators, and small-flow output is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of C-type ball valves, in particular to a C-type eccentric ball valve. Background Art

[0002] C-type ball valve is an important valve type. It has a unique C-type flow channel design. The ball is located in the center of the flow channel. When the ball rotates, it can realize the opening, closing and flow regulation functions of the fluid. In the industrial field, C-type ball valves are widely used in petroleum, chemical, natural gas, water treatment and other industries. It can meet the needs of fluid control under different working conditions and provide reliable guarantee for the stable operation of the system.

[0003] The existing C-type ball valves are mainly designed for conventional fluid cutting, distribution and flow direction change functions. They have limited control capabilities for small flows, and their valve core structure and adjustment method may not be able to achieve precise regulation of tiny flows. In scenarios where continuous small flow output is required, it is difficult to meet high-precision flow control requirements. Especially in some laboratories' fine experiments and fluid control of precision instruments, the flow control accuracy of ordinary C-type ball valves may not meet the requirements of experiments or instruments. Summary of the invention

[0004] The purpose of the present invention is to provide a C-type eccentric ball valve in order to solve the technical problem that the existing C-type ball valve cannot achieve accurate regulation of small flow rates.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A C-type eccentric ball valve, comprising:

[0007] A valve body, wherein the left and right ends of the valve body are fixedly connected to connecting pipes, and the upper and lower ends of the valve body are respectively fixedly connected to a vertical pipe and a support seat;

[0008] A C-shaped sphere, wherein the upper and lower ends of the C-shaped sphere are fixedly connected with a rotating shaft, and the two rotating shafts are rotatably installed in the vertical tube and the support seat respectively, one of the rotating shafts passes through the support seat and is fixedly connected with a worm gear, and the support seat is provided with a first protective shell and a second protective shell, and a worm is rotatably installed in the first protective shell and the second protective shell, and the worm is meshed with the worm gear, and one end of the worm is fixedly connected with a rocker;

[0009] A pointer, wherein the lower end of the pointer is fixedly connected to a T-shaped support rod, wherein the upper end of one of the rotating shafts is provided with an elongated groove, wherein the T-shaped support rod is slidably installed in the elongated groove, and an angle scale line is provided at the upper end of the first protective shell along the rotation direction of the pointer, and the arrow direction of the pointer corresponds to the scale on the angle scale line.

[0010] Wherein, one end of the worm gear away from the rocking wheel is fixedly connected with an angle sensor.

[0011] Among them, a frame-shaped slot is provided on a side of the first protective shell close to the second protective shell, a frame-shaped clamping rod is fixedly connected to a side of the second protective shell close to the first protective shell, the frame-shaped clamping rod is slidably installed in the frame-shaped slot, the worm is rotatably installed at the position where the first protective shell and the second protective shell are connected, and both ends of the worm pass through the first protective shell and the second protective shell.

[0012] Among them, the first protective shell is provided with a circular hole in the middle position of the angle scale line, the pointer passes through the circular hole and is arranged at the upper end of the angle scale line, the upper end of the pointer is provided with a circular groove, the upper end of the first protective shell is fixedly installed with a U-shaped pressure rod, the lower end of the U-shaped pressure rod is fixedly connected with a circular shaft, and the circular shaft is rotatably connected to the circular groove.

[0013] Wherein, a transparent cover is fixedly mounted on the upper end of the U-shaped pressure rod of the first protective shell, and the transparent cover is arranged outside the angle scale line.

[0014] The cross-section of the first protective shell and the second protective shell is a complete circle, and the first protective shell and the second protective shell are provided with a plurality of bolts at equal intervals along the circumferential direction, and the plurality of bolts respectively penetrate the first protective shell, the second protective shell and the support seat and are threadedly connected with them.

[0015] Among them, a U-shaped clamping rod is inserted into the side of the second protective shell away from the frame-shaped clamping rod, both ends of the U-shaped clamping rod penetrate the second protective shell and are slidably connected with the second protective shell, and a plurality of limiting grooves are provided at the outer surface of the worm and at the corresponding positions of the two ends of the U-shaped clamping rod, and the plurality of limiting grooves are arranged at equal intervals along the circumferential direction of the worm, and the two ends of the U-shaped clamping rod are engaged with the plurality of limiting grooves.

[0016] Among them, the second protective shell is rotatably installed with a screw rod in the middle position of the U-shaped clamping rod, one end of the screw rod passes through the second protective shell and is fixedly connected to the limiting block, the other end of the screw rod passes through the U-shaped clamping rod and is threadedly connected to the U-shaped clamping rod, and one end of the screw rod passing through the U-shaped clamping rod is fixedly connected to a knob.

[0017] In which, a receiving groove is provided on the inner wall of the valve body, and two symmetrically arranged arc-shaped limit plates are slidably installed on the inner wall of the accommodating groove, and a plurality of springs are fixedly installed between the sides of the two arc-shaped limit plates away from each other and the inner wall of the accommodating groove, and the plurality of springs are arranged at equal intervals along the side edges of the vertical cross-section of the arc-shaped limit plates, and the C-shaped sphere is slidably connected to the side where the two arc-shaped limit plates are close to each other, and two symmetrically arranged triangular sliders are fixedly connected at both ends of the arc surface of the C-shaped sphere away from the two arc-shaped limit plates, and four sliding holes corresponding to the two triangular sliders are provided on the inner walls on both sides of the accommodating groove, and the horizontal height of the four sliding holes is set to be the same as the horizontal height of the two triangular sliders.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0019] In the present invention, a C-shaped sphere is used in conjunction with a pointer and an angle scale line. When the C-shaped sphere is driven to rotate in the valve body, the rotating shaft at the upper end of the C-shaped sphere drives the pointer to rotate on the angle scale line. The indicated angle of the pointer corresponding to the angle scale line can provide the operator with intuitive ball valve opening information. By observing the position of the pointer, the operator can adjust the ball valve more accurately and try to control the opening within a smaller range to achieve a small flow output. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a vertical cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 An exploded view of the structure of the connection between the first protective shell and the second protective shell in the present invention;

[0023] Figure 4 It is a transverse cross-sectional view of the overall structure of the present invention;

[0024] Figure 5 A cross-sectional view of the structure on one side of the interior of the valve body of the present invention;

[0025] Figure 6 for Figure 3 A magnified view of the structure at center A;

[0026] Figure 7 This is a flow chart of the internal composition of the angle sensor in the present invention.

[0027] Markings in the figure: 10, valve body; 101, receiving groove; 102, vertical pipe; 103, sliding hole; 104, support seat; 11, connecting pipe; 12, bolt; 13, first protective shell; 131, angle scale line; 132, U-shaped pressure rod; 133, round shaft; 134, transparent cover; 135, frame-type slot; 14, second protective shell; 141, frame-type clamping rod; 15, U-shaped clamping rod; 16, screw rod; 161, limit block; 17, knob; 18, arc-shaped limit plate; 19, spring;

[0028] 20. C-shaped sphere; 201. rotating shaft; 202. triangular slider; 203. long slot; 21. T-shaped support rod; 22. worm gear; 23. worm; 231. limit slot; 24. rocker; 25. pointer; 26. angle sensor. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Reference Figure 1-Figure 7 A C-type eccentric ball valve includes a valve body 10, the left and right ends of the valve body 10 are fixedly connected with a connecting pipe 11, the upper and lower ends of the valve body 10 are respectively fixedly connected with a vertical pipe 102 and a support seat 104, a C-type ball 20 is arranged in the valve body 10, the upper and lower ends of the C-type ball 20 are fixedly connected with a rotating shaft 201, and the two rotating shafts 201 are rotatably installed in the vertical pipe 102 and the support seat 104, one of the rotating shafts 201 penetrates the support seat 104 and is fixedly connected with a worm gear 22, and a first protective shell 13 and a second protective shell 14 are arranged on the support seat 104, and the first protective shell 13 and the second protective shell 14 are fixedly connected. A worm 23 is rotatably installed in the second protective shell 14, and the worm 23 is meshed with the worm wheel 22. One end of the worm 23 is fixedly connected to a rocker 24. A pointer 25 is provided at the upper end of one of the rotating shafts 201, and a T-shaped support rod 21 is fixedly connected to the lower end of the pointer 25. An elongated groove 203 is provided at the upper end of one of the rotating shafts 201, and the T-shaped support rod 21 is slidably installed in the elongated groove 203. An angle scale line 131 is provided at the upper end of the first protective shell 13 along the rotation direction of the pointer 25, and the arrow direction of the pointer 25 corresponds to the scale on the angle scale line 131.

[0031] Specifically, when the C-shaped ball 20 is opened, the worm 23 on the first protective shell 13 and the second protective shell 14 is driven to rotate by rotating the rocker 24, so that the worm wheel 22 drives one of the rotating shafts 201 to rotate, and further the C-shaped ball 20 is rotated in the valve body 10, so that a gap appears at the connection between the connecting pipe 11 and the valve body 10. While the C-shaped ball 20 rotates, the T-shaped support rod 21 in the elongated groove 203 on one of the rotating shafts 201 is further rotated, and then the pointer 25 on the T-shaped support rod 21 rotates at the upper end of the first protective shell 13, so that the arrow direction of the pointer 25 is indicated on the scale on the corresponding angle scale line 131, so that the operator can provide intuitive information on the opening of the ball valve. By observing the position of the pointer 25, the operator can adjust the ball valve more accurately and try to control the opening within a smaller range to achieve a small flow output, and it is helpful to improve the accuracy of flow control to a certain extent, especially for those application scenarios where small flow needs to be adjusted frequently, and can provide a certain reference basis.

[0032] Reference Figure 7As shown, the end of the worm 23 away from the rocker 24 is fixedly connected to an angle sensor 26. The angle sensor 26 can monitor the rotation amplitude of the worm 23 in real time. The angle sensor 26 is composed of an angle sensor terminal, a battery and a remote transceiver. The angle sensor terminal is responsible for detecting the angle change of the worm 23 and generating a corresponding electrical signal. The battery provides power for the entire angle sensor to ensure its normal operation. The remote transceiver is responsible for transmitting the angle data detected by the angle sensor terminal to the remote operation terminal (mobile phone) or receiving instructions from the remote operation terminal (mobile phone). When the angle changes, the angle sensor terminal converts the change into an electrical signal. After processing, these signals are received and sent out by the remote transceiver. At the same time, the battery continues to power the angle sensor terminal and the remote transceiver to ensure that they will not stop operating due to power failure during operation. After receiving the instructions from the remote operation terminal (mobile phone), the remote transceiver will also transmit these instructions to the angle sensor terminal to realize remote control and configuration of the angle sensor.

[0033] Reference Figure 3 and Figure 6 As shown, a frame-shaped slot 135 is provided on one side of the first protective shell 13 close to the second protective shell 14, and a frame-shaped clamping rod 141 is fixedly connected to one side of the second protective shell 14 close to the first protective shell 13. The frame-shaped clamping rod 141 is slidably installed in the frame-shaped slot 135, and the worm 23 is rotatably installed at the position where the first protective shell 13 and the second protective shell 14 are connected. Both ends of the worm 23 penetrate the first protective shell 13 and the second protective shell 14. Through the sliding cooperation between the frame-shaped slot 135 on the first protective shell 13 and the frame-shaped clamping rod 141 on the second protective shell 14, the first protective shell 13 and the second protective shell 14 can be separated, which further facilitates the disassembly and assembly of the first protective shell 13 and the second protective shell 14.

[0034] Reference Figure 1 and Figure 2 As shown, the first protective shell 13 is provided with a round hole in the middle position of the angle scale line 131, the pointer 25 passes through the round hole and is arranged at the upper end of the angle scale line 131, and a round groove is provided at the upper end of the pointer 25. A U-shaped pressure rod 132 is fixedly installed on the upper end of the first protective shell 13, and a round shaft 133 is fixedly connected to the lower end of the U-shaped pressure rod 132. The round shaft 133 is rotatably connected to the round groove. Through the cooperation of the U-shaped pressure rod 132 and the round shaft 133, the position of the pointer 25 is restricted to prevent the pointer 25 from slipping off one of the rotating shafts 201.

[0035] Reference Figure 1 and Figure 2As shown, a transparent cover 134 is fixedly installed on the upper end of the U-shaped pressure rod 132 of the first protective shell 13. The transparent cover 134 is arranged outside the angle scale line 131. By setting the transparent cover 134, the angle scale line 131 on the first protective shell 13 can be protected, and the arrow indication position of the pointer 25 can be intuitively seen.

[0036] Reference Figure 1 , Figure 2 and Figure 3 As shown, the cross-section of the first protective shell 13 and the second protective shell 14 is a complete circle, and the first protective shell 13 and the second protective shell 14 are provided with a plurality of bolts 12 at equal intervals along the circumferential direction. The plurality of bolts 12 respectively penetrate the first protective shell 13, the second protective shell 14 and the support seat 104 and are threadedly connected with them. Through the plurality of bolts 12, the first protective shell 13 and the second protective shell 14 are conveniently fixed on the support seat 104.

[0037] Reference Figure 3 and Figure 6 As shown, a U-shaped clamping rod 15 is inserted on the side of the second protective shell 14 away from the frame-type clamping rod 141, and both ends of the U-shaped clamping rod 15 penetrate the second protective shell 14 and are slidably connected to the second protective shell 14. A plurality of limiting grooves 231 are provided on the outer surface of the worm 23 and at the corresponding positions of the two ends of the U-shaped clamping rod 15. The plurality of limiting grooves 231 are arranged at equal intervals along the circumferential direction of the worm 23. The two ends of the U-shaped clamping rod 15 are engaged with the plurality of limiting grooves 231. By moving the U-shaped clamping rod 15 on the second protective shell 14, the two ends of the U-shaped clamping rod 15 are slidably engaged in the corresponding limiting grooves 231, and the position of the worm 23 is limited to avoid the C-shaped ball 20 from rotating in the valve body 10 under the influence of external force, thereby changing the flow rate in the C-type ball valve.

[0038] Reference Figure 2 and Figure 6 As shown, the second protective shell 14 is rotatably installed with a screw rod 16 at the middle position of the U-shaped clamping rod 15, one end of the screw rod 16 passes through the second protective shell 14 and is fixedly connected to the limiting block 161, the other end of the screw rod 16 passes through the U-shaped clamping rod 15 and is threadedly connected to the U-shaped clamping rod 15, and one end of the screw rod 16 passes through the U-shaped clamping rod 15 and is fixedly connected to the knob 17. By rotating the knob 17, the screw rod 16 is driven to rotate, and the U-shaped clamping rod 15 is further moved on the screw rod 16, which can drive the two ends of the U-shaped clamping rod 15 to slide and engage in the corresponding limit grooves 231.

[0039] Reference Figure 4 and Figure 5As shown, a receiving groove 101 is provided on the inner wall of the valve body 10, and two symmetrically arranged arc-shaped limit plates 18 are slidably installed on the inner wall of the receiving groove 101. A plurality of springs 19 are fixedly installed between the inner wall of the receiving groove 101 and the side of the two arc-shaped limit plates 18 away from each other. The plurality of springs 19 are arranged at equal intervals along the side of the vertical cross-section of the arc-shaped limit plates 18. The C-shaped sphere 20 is slidably connected to the side of the two arc-shaped limit plates 18 where the arc is close to each other. Two ends of the arc-shaped surface of the C-shaped sphere 20 away from the two arc-shaped limit plates 18 are fixedly connected with two symmetrically arranged triangular sliders 202. Four sliding holes 103 corresponding to the two triangular sliders 202 are provided on the inner walls on both sides of the receiving groove 101, and the horizontal height of the four sliding holes 103 is set to be the same as the horizontal height of the two triangular sliders 202.

[0040] Specifically, when the C-type sphere 20 rotates, a triangular slider 202 on the C-type sphere 20 slides in the sliding hole 103 corresponding to the rotation direction, and then pushes the arc-shaped limit plate 18 in the rotation direction of the C-type sphere 20 to slide in the accommodating groove 101 and squeeze a plurality of springs 19, thereby further causing the triangular slider 202 on the C-type sphere 20 to rotate on the arc-shaped limit plate 18, so that when the C-type ball valve is opened, the outer wall of the C-type sphere 20 is separated from the inner wall of the arc-shaped limit plate 18, thereby reducing the sliding wear between the outer wall of the C-type sphere 20 and the inner wall of the arc-shaped limit plate 18, and extending the service life of the C-type ball valve.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A C-type eccentric ball valve, characterized in that: include: A valve body (10), wherein the left and right ends of the valve body (10) are fixedly connected to connecting pipes (11), and the upper and lower ends of the valve body (10) are respectively fixedly connected to a vertical pipe (102) and a support seat (104); A C-shaped sphere (20), wherein the upper and lower ends of the C-shaped sphere (20) are both fixedly connected with a rotating shaft (201), and the two rotating shafts (201) are rotatably mounted in the vertical tube (102) and the support seat (104), respectively, wherein one of the rotating shafts (201) penetrates the support seat (104) and is fixedly connected with a worm gear (22), and the support seat (104) is provided with a first protective shell (13) and a second protective shell (14), and a worm (23) is rotatably mounted in the first protective shell (13) and the second protective shell (14), and the worm (23) is meshed with the worm gear (22), and one end of the worm (23) is fixedly connected with a rocker (24); A pointer (25), the lower end of which is fixedly connected to a T-shaped support rod (21), the upper end of one of the rotating shafts (201) is provided with an elongated groove (203), the T-shaped support rod (21) is slidably installed in the elongated groove (203), the upper end of the first protective shell (13) is provided with an angle scale line (131) along the rotation direction of the pointer (25), and the arrow direction of the pointer (25) corresponds to the scale on the angle scale line (131).

2. A C-type eccentric ball valve as claimed in claim 1, characterized in that: An angle sensor (26) is fixedly connected to one end of the worm (23) away from the rocking wheel (24).

3. A C-type eccentric ball valve as claimed in claim 1, characterized in that: A frame-shaped card slot (135) is provided on one side of the first protective shell (13) close to the second protective shell (14); a frame-shaped card rod (141) is fixedly connected to one side of the second protective shell (14) close to the first protective shell (13); the frame-shaped card rod (141) is slidably installed in the frame-shaped card slot (135); the worm (23) is rotatably installed at a position where the first protective shell (13) and the second protective shell (14) are connected; and both ends of the worm (23) penetrate the first protective shell (13) and the second protective shell (14).

4. A C-type eccentric ball valve as claimed in claim 1, characterized in that: The first protective shell (13) is provided with a circular hole at the middle position of the angle scale line (131); the pointer (25) passes through the circular hole and is arranged at the upper end of the angle scale line (131); a circular groove is provided at the upper end of the pointer (25); a U-shaped pressure rod (132) is fixedly installed at the upper end of the first protective shell (13); a circular shaft (133) is fixedly connected to the lower end of the U-shaped pressure rod (132); and the circular shaft (133) is rotatably connected to the circular groove.

5. A C-type eccentric ball valve as claimed in claim 4, characterized in that: The first protective shell (13) has a transparent cover (134) fixedly mounted on the upper end of the U-shaped pressure rod (132), and the transparent cover (134) is arranged outside the angle scale line (131).

6. A C-type eccentric ball valve as claimed in claim 1, characterized in that: The cross-section of the first protective shell (13) and the second protective shell (14) is a complete circle. The first protective shell (13) and the second protective shell (14) are provided with a plurality of bolts (12) at equal intervals along the circumferential direction. The plurality of bolts (12) respectively penetrate the first protective shell (13), the second protective shell (14) and the support seat (104) and are threadedly connected thereto.

7. A C-type eccentric ball valve as claimed in claim 3, characterized in that: A U-shaped clamping rod (15) is inserted into the side of the second protective shell (14) away from the frame-shaped clamping rod (141), and both ends of the U-shaped clamping rod (15) penetrate the second protective shell (14) and are slidably connected to the second protective shell (14). A plurality of limiting grooves (231) are provided at the outer surface of the worm (23) and at the corresponding positions of the two ends of the U-shaped clamping rod (15). The plurality of limiting grooves (231) are arranged at equal intervals along the circumferential direction of the worm (23), and the two ends of the U-shaped clamping rod (15) are snap-fitted with the plurality of limiting grooves (231).

8. A C-type eccentric ball valve as claimed in claim 7, characterized in that: The second protective shell (14) is rotatably mounted with a screw rod (16) at a middle position of the U-shaped clamping rod (15); one end of the screw rod (16) passes through the second protective shell (14) and is fixedly connected to a limit block (161); the other end of the screw rod (16) passes through the U-shaped clamping rod (15) and is threadedly connected to the U-shaped clamping rod (15); one end of the screw rod (16) passing through the U-shaped clamping rod (15) is fixedly connected to a knob (17).

9. A C-type eccentric ball valve as claimed in claim 1, characterized in that: The valve body (10) is provided with a receiving groove (101) on the inner wall thereof, and two symmetrically arranged arc-shaped limit plates (18) are slidably mounted on the inner wall of the receiving groove (101); a plurality of springs (19) are fixedly mounted between the inner wall of the receiving groove (101) and the side of the two arc-shaped limit plates (18) that are away from each other; the plurality of springs (19) are arranged at equal intervals along the side of the vertical cross section of the arc-shaped limit plates (18); the C-shaped sphere (20) is slidably connected to the arc-shaped side of the two arc-shaped limit plates (18); two symmetrically arranged triangular sliders (202) are fixedly connected to the two ends of the arc-shaped surface of the C-shaped sphere (20) that are away from the two arc-shaped limit plates (18); four sliding holes (103) corresponding to the two triangular sliders (202) are provided on the inner walls on both sides of the receiving groove (101); and the horizontal height of the four sliding holes (103) is arranged to be the same as the horizontal height of the two triangular sliders (202).

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