L-shaped fixed ball three-way ball valve

Abstract

The invention belongs to the technical field of ball valves, and particularly relates to an L-shaped fixed ball three-way ball valve which comprises a valve body, a feeding port is fixed to the front end of the valve body, a discharging port is fixed to the left side of the valve body, a valve deck is installed on the right side of the valve body, and a ball body is rotationally connected into the valve body. The ball valve further comprises a valve seat base, a mounting groove is formed in the side, close to the ball body, of the valve seat base, a sealing ring is arranged in the mounting groove, the side, away from the valve seat base, of the sealing ring can be tightly attached to the surface of the ball body, and a plurality of first springs are arranged on the side, away from the ball body, of the valve seat base at equal intervals. The valve seat base pushes the sealing ring to the surface of the ball tightly through the elastic force of the first spring, and two push rods are symmetrically arranged on the two sides of the lower portion of the ball. When the ball rotates, the ejector block is driven to rotate, the push rod can be driven to push the valve seat base in the direction away from the ball, friction between the ball and the sealing ring when the ball rotates is reduced, the service life of the sealing ring is prolonged, and the situation that fluid leaks into other channels is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of ball valves, in particular to an L-shaped fixed ball three-way ball valve. Background Art

[0002] The three-way ball valve is widely used in the oil, natural gas, food, pharmaceutical and other industries because it can easily switch the flow direction of the medium through the rotation of the ball. The three-way ball valve switches the connected channels through the L-shaped channel of the internal fixed ball, thereby controlling the flow of the medium to the required pipeline.

[0003] A Chinese patent with the existing announcement number CN218326372U discloses an L-type three-way ball valve, which uses the elastic force of a butterfly spring to act on the valve seat support ring to seal the first valve seat, the second valve seat and the valve ball, thereby improving the sealing performance of the ball valve.

[0004] During use, the above-mentioned technical solution uses a butterfly spring to push the valve seat and the valve ball seal to cooperate, thereby improving the sealing performance of the ball valve and preventing leakage after switching the flow channel. However, there will be friction during the switching process, and wear will occur after a large number of frictions. Gaps will be generated at the worn areas, which will easily cause the medium to leak into other channels, affecting the internal sealing of the ball valve.

[0005] To this end, the present invention provides an L-shaped fixed ball three-way ball valve. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: the L-shaped fixed ball three-way ball valve described in the present invention includes a valve body, a feed port is fixed to the front end of the valve body, a discharge port is fixed to the left side of the valve body, a valve cover is installed on the right side of the valve body, a ball is rotatably connected to the inside of the valve body, a turbine box is installed to the top of the valve body through a bracket, a connecting shaft is rotatably connected to the inside of the bracket, the top end of the connecting shaft is connected to the turbine box, the bottom end of the connecting shaft is plugged into the top end of the ball, a fixed shaft is installed at the bottom end of the valve body, a rotation groove is opened at the bottom end of the ball, and the top end of the fixed shaft is inserted into the inside of the rotation groove;

[0008] The valve seat base is provided with a mounting groove on a side of the valve seat base close to the sphere, a sealing ring is provided inside the mounting groove, and a side of the sealing ring away from the valve seat base can be closely attached to the surface of the sphere, a plurality of first springs are provided at equal intervals on a side of the valve seat base away from the sphere, and the valve seat base pushes the sealing ring tightly against the surface of the sphere through the elastic force of the first springs, and two push rods are symmetrically provided on both sides below the sphere;

[0009] During the rotation of the ball, the valve seat base is pushed by the push rod, so that the sealing ring is actively separated from the ball.

[0010] Preferably, the feed port and the valve cover are symmetrically provided with limiting grooves about the vertical center line of the connecting shaft, the end of the valve seat base away from the spherical body is sleeved with a spring seat, the end of the spring seat away from the valve seat base is slidably connected to the inside of the limiting groove, and the first spring is inserted into the inside of the spring seat;

[0011] Among them, the outer side of the spring seat is provided with an O-ring for sealing the spring seat and the limit groove, and the inside of the spring seat is also inlaid with an O-ring for sealing the spring seat and the valve seat base.

[0012] Preferably, two groups of top blocks are fixed to the bottom end of the sphere, and the top blocks are distributed at equal intervals around the axial direction of the sphere. The bottom end of the push rod is rotatably connected to a connecting seat, and a guide shell is provided below the connecting seat. A slider is fixed to the bottom end of the connecting seat, and the slider is slidably connected to the inside of the guide shell. A guide rod is fixed to the inside of the guide shell, and the guide rod passes through the inside of the slider. The bottom end of the guide shell is fixedly connected to the inner wall of the valve body, and a plurality of rolling blocks are provided on the end of the connecting seat away from the push rod.

[0013] The length of each top block occupies one quarter of the circumference of the bottom end of the sphere, and the length of the top block reserves space for placing the connecting seat. Slopes for guidance are set on both ends of the top block towards the push rod side.

[0014] Preferably, a second spring is sleeved on the exterior of the guide rod of the guide housing, and the second spring is arranged on a side of the slider close to the push rod.

[0015] Preferably, the bottom end of the push rod near the connecting seat is provided with an arc surface, and the top end is set at a right angle; the bottom end of the connecting seat near the push rod is also provided with an arc surface, and the top end is set at a right angle;

[0016] The arc surface is used for the push rod to rotate downward, and the right angle is used for supporting the push rod and the connecting seat.

[0017] Preferably, a metal spring is fixed to one side of the bottom end of the connecting seat close to the push rod, and an upward bent end is provided on one end of the metal spring close to the push rod, and the top end of the bent end is tightly attached to the bottom end of the push rod.

[0018] Preferably, a pressure frame is provided in the middle of the push rod, and a rotating shaft is fixed to the bottom end of the pressure frame. The rotating shaft is rotatably connected to the inside of the valve body. Telescopic blocks are provided on both sides of the fixed shaft. The telescopic blocks are slidably connected to both sides of the bottom end of the valve body. A third spring is fixed on both sides of the telescopic block, and the other end of the third spring is fixedly connected to the valve body. A pull rod is fixed on the side of the middle of the rotating shaft away from the telescopic block, and a pull rope is fixed on the side of the top of the telescopic block close to the rotating shaft, and the other end of the pull rope is fixedly connected to the pull rod end of the rotating shaft.

[0019] Preferably, a coil spring is fixed to both ends of the rotating shaft, and the other end of the coil spring is fixedly connected to the valve body.

[0020] Preferably, a rotating hole is provided in the middle of the bottom end of the fixed shaft, a top column is inserted into the rotating hole, a thread is provided at the bottom end of the top column, the bottom end of the top column is threadedly connected to the rotating hole, a plurality of push blocks are slidably connected to the top end of the fixed shaft, one end of the push block away from the top column is rotatably connected to the rotating column, a fourth spring is fixed to the side of the top end of the push block away from the rotating ring, the other end of the fourth spring is fixedly connected to the fixed shaft, the top end of the top column is set to a cone shape, and a slope is provided on the side of the bottom end of the push block close to the top column;

[0021] Among them, the slope surface of the push block is in close contact with the slope surface of the top end of the top column.

[0022] Preferably, the bottom end of the top column is rotatably connected to a rotating ring, and the diameter of the rotating ring matches the diameter of the bottom end of the top column.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The L-shaped fixed ball three-way ball valve described in the present invention drives the top block to rotate when the ball rotates, which can drive the push rod to push the valve seat base away from the ball, thereby reducing the friction between the ball and the sealing ring when rotating, extending the service life of the sealing ring, and reducing the leakage of fluid into other channels.

[0025] 2. The L-shaped fixed ball three-way ball valve described in the present invention controls the rotation of the pressing frame during the installation and removal of the fixed shaft, thereby controlling the position of the push rod and preventing the push rod from interfering with the ball during the installation of the ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 It is a perspective view of the present invention;

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of the valve body in the present invention;

[0029] Figure 3 It is a schematic diagram of the valve seat base structure in the present invention;

[0030] Figure 4 Schematic diagram of the cross-sectional structure of the feed port in the present invention;

[0031] Figure 5 It is a schematic diagram of the spherical structure of the present invention;

[0032] Figure 6 It is a schematic diagram of the bottom structure of the sphere in the present invention;

[0033] Figure 7This is a schematic diagram of the internal structure of the fixed shaft in the present invention;

[0034] Figure 8 It is a schematic diagram of the top column structure in the present invention;

[0035] Figure 9 It is a schematic diagram of the top block structure in the present invention;

[0036] Figure 10 It is a schematic diagram of the push rod structure in the present invention.

[0037] In the figure: 1. valve body; 11. feed port; 12. discharge port; 121. limit groove; 13. valve seat base; 131. sealing ring; 132. mounting groove; 133. spring seat; 134. first spring; 14. push rod; 141. connecting seat; 142. guide shell; 143. slider; 144. second spring; 145. metal shrapnel; 15. telescopic block; 151. third spring; 152. pull rope; 153. pressure frame; 154. rotating shaft; 155. coil spring; 2. valve cover; 3. turbine box; 31. sphere; 311. rotating groove; 312. top block; 32. connecting shaft; 33. fixed shaft; 331. rotating hole; 332. top column; 333. push block; 334. fourth spring; 335. rotating column; 336. rotating ring. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0039] like Figures 1 to 10 As shown, an L-shaped fixed ball three-way ball valve according to an embodiment of the present invention includes a valve body 1, a feed port 11 is fixed to the front end of the valve body 1, a discharge port 12 is fixed to the left side of the valve body 1, a valve cover 2 is installed on the right side of the valve body 1, a ball 31 is rotatably connected to the inside of the valve body 1, a turbine box 3 is installed to the top of the valve body 1 through a bracket, a connecting shaft 32 is rotatably connected to the inside of the bracket, the top end of the connecting shaft 32 is connected to the turbine box 3, the bottom end of the connecting shaft 32 is plugged into the top end of the ball 31, a fixed shaft 33 is installed at the bottom end of the valve body 1, a rotation groove 311 is opened at the bottom end of the ball 31, and the top end of the fixed shaft 33 is inserted into the inside of the rotation groove 311;

[0040] The valve seat 13 further includes a valve seat base 13. A mounting groove 132 is formed on a side of the valve seat base 13 close to the ball 31. A sealing ring 131 is disposed within the mounting groove 132. The side of the sealing ring 131 away from the valve seat base 13 is capable of being closely attached to the surface of the ball 31. A plurality of first springs 134 are evenly spaced apart on the side of the valve seat base 13 away from the ball 31. The elastic force of the first springs 134 causes the valve seat base 13 to push the sealing ring 131 tightly against the surface of the ball 31. Two push rods 14 are symmetrically disposed on both sides below the ball 31.

[0041] During the rotation of the ball 31, the valve seat base 13 is pushed by the push rod 14, so that the sealing ring 131 is actively separated from the ball 31;

[0042] In the industrial production process, some fluids need to be transported through pipelines. During the transportation process, some pipelines need to switch the flow direction of the fluid so that the fluid flows to the required location. Therefore, a three-way ball valve is needed in the pipeline. Before use, connect the three-way ball valve to the pipeline, connect the feed port 11 to the feed pipeline, the discharge port 12 to the first feed pipeline, and the end of the valve cover 2 to the second feed pipeline. An L-shaped through hole is opened inside the ball 31. In the initial state, the two ends of the through hole of the ball 31 are respectively aligned with the direction of the feed port 11 and the discharge port 12. At this time, the feed port 11 will be connected to the inside of the discharge port 12. At this time, the valve cover 2 is blocked by the ball 31, so that the fluid will not flow inside the valve cover 2 at this time. During this process, the elastic force of the first spring 134 will drive the valve seat base 13 to be tightly attached to the direction of the ball 31. The ball 31 is tightly attached to the surface of the ball 31 through the sealing ring 131. At this time, the sealing ring 131 can seal the ball 31 and the inside of the valve body 1 to prevent fluid leakage.

[0043] When it is necessary to switch the fluid flow channel, the turntable of the turbine box 3 is rotated to drive the turbine box 3 to rotate. The turbine box 3 has the effect of deceleration and self-locking. When the turbine box 3 rotates, it will drive the connecting shaft 32 to rotate. After the connecting shaft 32 rotates, it drives the ball 31 to rotate. At this time, the ball 31 rotates 90° counterclockwise. At this time, the L-shaped through hole of the ball 31 can be rotated 90°, and the opening aligned with the feed port 11 can be turned towards the direction of the valve cover 2, and the opening aligned with the discharge port 12 can be turned towards the direction of the feed port 11. At this time, the flow direction of the fluid inside the valve body 1 can be switched. At this time, the inside of the discharge port 12 is blocked by the ball 31 and no circulation occurs. At this time, the sealing ring 131 will continue to seal the ball 31;

[0044] During the rotation of the ball 31, the ball 31 will cause friction to the sealing ring 131. After a large number of frictions, the sealing ring 131 will be worn. At this time, a certain gap will appear in the sealing ring 131, which will cause fluid to leak through the gap. In order to prevent this problem, when the ball 31 rotates, the push rod 14 is driven to push the valve seat base 13, so that the ball 31 can be temporarily separated from the sealing ring 131 when it rotates. After the ball 31 switches, the push rod 14 automatically resets, and at the same time, the first spring 134 drives the valve seat base 13 to automatically reset the sealing ring 131. At this time, the sealing ring 131 resets and continues to seal. In this way, the sealing ring 131 can be separated from the ball 31 when the ball 31 rotates, reducing the friction of the ball 31 on the sealing ring 131 and extending the service life of the sealing ring 131.

[0045] like Figures 1 to 5As shown, the feed port 11 and the valve cover 2 are symmetrically provided with a limiting groove 121 about the vertical center line of the connecting shaft 32. The end of the valve seat base 13 away from the ball 31 is sleeved with a spring seat 133. The end of the spring seat 133 away from the valve seat base 13 is slidably connected to the inside of the limiting groove 121. The first spring 134 is inserted into the inside of the spring seat 133.

[0046] Among them, the outer side of the spring seat 133 is provided with an O-ring for sealing the spring seat 133 and the limiting groove 121, and the inner side of the spring seat 133 is also inlaid with an O-ring for sealing the spring seat 133 and the valve seat base 13;

[0047] During use, the spring seat 133 can slide inside the limiting groove 121, and the elastic force of the first spring 134 will push the spring seat 133, and the spring seat 133 will push the valve seat base 13 to drive the sealing ring 131 to the surface of the ball 31. At the same time, the two O-rings respectively seal between the spring seat 133 and the limiting groove 121, and seal between the spring seat 133 and the valve seat base 13. At this time, a channel is formed between the discharge port 12, the spring seat 133 and the valve seat base 13, and this channel is connected to the internal through hole of the ball 31 under the sealing action of the sealing ring 131.

[0048] like Figures 1 to 10 As shown, two groups of top blocks 312 are fixed to the bottom end of the sphere 31, and the top blocks 312 are distributed at equal intervals around the axial direction of the sphere 31. The bottom end of the push rod 14 is rotatably connected to the connecting seat 141. A guide shell 142 is provided below the connecting seat 141. A slider 143 is fixed to the bottom end of the connecting seat 141. The slider 143 is slidably connected to the inside of the guide shell 142. A guide rod is fixed to the inside of the guide shell 142. The guide rod passes through the inside of the slider 143. The bottom end of the guide shell 142 is fixedly connected to the inner wall of the valve body 1, and a plurality of rolling blocks are provided on the end of the connecting seat 141 away from the push rod 14.

[0049] The length of each top block 312 occupies one quarter of the circumference of the bottom end of the sphere 31, and the length of the top block 312 reserves space for the placement of the connecting seat 141. The two ends of the top block 312 are provided with a slope for guidance toward the side of the push rod 14;

[0050] When the ball 31 rotates to switch the flow direction, it will drive the top block 312 to rotate. At this time, the slope of the top block 312 will contact the rolling block of the connecting seat 141. Under the push of the slope, the rolling block will push the connecting seat 141. The connecting seat 141 pushes the push rod 14 to stick to the surface of the valve seat base 13. The slider 143 slides inside the guide shell 142 to guide the connecting seat 141, thereby ensuring that the moving direction of the push rod 14 is in a stable state. When the push rod 14 moves, it will push the valve seat base 13 to separate from the ball 31. At this time, the valve seat base 13 drives the sealing ring 131 and the ball 31 is separated, at this time the ball 31 can be separated from the sealing ring 131. During this period, the outer side of the top block 312 continues to limit the connecting seat 141. When the ball 31 rotates 90°, the channel switching is completed. At the same time, the top block 312 rotates 90° and separates from the connecting seat 141. At this time, the first spring 134 pushes the valve seat base 13 to reset, and the valve seat base 13 pushes the push rod 14 in the opposite direction to reset. In this way, the ball 31 can be separated from the sealing ring 131 during the rotation process, thereby reducing the friction between the ball 31 and the sealing ring 131 and extending the service life of the sealing ring 131.

[0051] like Figure 10 As shown, the outer portion of the guide rod of the guide housing 142 is provided with a second spring 144 , and the second spring 144 is provided on a side of the slider 143 close to the push rod 14 ;

[0052] In the initial state, a gap is reserved between the end of the push rod 14 and the valve seat base 13. The gap is used for the first spring 134 to drive the valve seat base 13 to move close to the ball 31. When the push rod 14 is pushed back by the valve seat base 13, it will still be close to the surface of the valve seat base 13. At this time, the elastic force of the second spring 144 can drive the slider 143 to continue to reset. After the slider 143 is reset, it will drive the push rod 14 and the valve seat base 13 to separate.

[0053] like Figures 9 and 10 As shown, the bottom end of the push rod 14 near the connecting seat 141 is provided with an arc surface, and the top end is set at a right angle. The bottom end of the connecting seat 141 near the push rod 14 is also provided with an arc surface, and the top end is set at a right angle.

[0054] The arc surface is used for the push rod 14 to rotate downward, and the right angle is used for supporting the push rod 14 and the connecting seat 141;

[0055] During the process of installing and removing the ball 31, the push rod 14 will interfere with the ball 31. Therefore, a rotation connection is set between the connecting seat 141 and the push rod 14. When the ball 31 needs to be removed, the push rod 14 is pressed downward to rotate the push rod 14 downward. At this time, the push rod 14 can be close to the inner wall of the valve body 1, which is convenient for removing the ball 31. In the process of the connecting seat 141 pushing the push rod 14, the end of the push rod 14 away from the connecting seat 141 will push the push rod 14 upward due to the reaction force of the valve seat base 13. At this time, the right angle between the push rod 14 and the end of the connecting seat 141 will limit the support between them, so that the push rod 14 can only rotate downward.

[0056] like Figures 9 and 10 As shown, a metal spring 145 is fixed to one side of the bottom end of the connecting seat 141 close to the push rod 14. The metal spring 145 is provided with an upward bent end near one end of the push rod 14, and the top of the bent end is tightly attached to the bottom end of the push rod 14.

[0057] In order to prevent the push rod 14 from automatically falling due to gravity, a metal spring 145 is fixed on one side of the connecting seat 141. The bent end of the metal spring 145 supports the bottom of the push rod 14, which can offset the gravity of the push rod 14 itself, thereby keeping the push rod 14 in an upward stable state.

[0058] like Figures 1 to 10 As shown, a pressure frame 153 is sleeved on the middle part of the push rod 14, and a rotating shaft 154 is fixed to the bottom end of the pressure frame 153. The rotating shaft 154 is rotatably connected to the inside of the valve body 1. Telescopic blocks 15 are provided on both sides of the fixed shaft 33. The telescopic blocks 15 are slidably connected to both sides of the bottom end of the valve body 1. Third springs 151 are fixed on both sides of the telescopic block 15. The other end of the third spring 151 is fixed to the valve body 1. A pull rod is fixed on the side of the middle part of the rotating shaft 154 away from the telescopic block 15. A pull rope 152 is fixed on the side of the top of the telescopic block 15 close to the rotating shaft 154. The other end of the pull rope 152 is fixed to the end of the pull rod of the rotating shaft 154.

[0059] When installing and removing the ball 31, in order to prevent the push rod 14 from interfering with the ball 31, the push rod 14 needs to be rotated downward. In the initial state, the elastic force of the third spring 151 pushes the telescopic block 15 to pull the pull rope 152, and the pull rope 152 simultaneously pulls the pull rod of the rotating shaft 154, and the pull rod drives the rotating shaft 154 to rotate. At this time, the rotating shaft 154 drives the pressure frame 153 to rotate. When the pressure frame 153 rotates, it presses the push rod 14 downward. The elastic force of the third spring 151 is greater than the elastic force of the metal spring 145, which can make the push rod 14 close to the inner wall of the valve body 1 at this time. Therefore, the push rod 14 in the initial state is close to the valve body 1. The inner wall of the valve body 1 is then inserted into the ball 31. After installation, the fixed shaft 33 is used to position the ball 31. At this time, the fixed shaft 33 is inserted into the bottom end of the valve body 1. At this time, the top of the fixed shaft 33 pushes the inclined surface of the telescopic block 15, which can make the telescopic block 15 squeeze the third spring 151. At the same time, the pull rope 152 is loosened after the telescopic block 15 is displaced. After the pull rope 152 is loosened, the rotating shaft 154 loses the tension. At this time, the elastic force of the metal shrapnel 145 drives the push rod 14 to reset. The push rod 14 can lift the pressure frame 153, which can automatically reset the pressure frame 153. At this time, the push rod 14 and the pressure frame 153 are in Figure 10 state, and then use bolts to fix the fixed shaft 33 to the bottom end of the valve body 1.

[0060] like Figures 9 and 10 As shown, coil springs 155 are fixed to both ends of the rotating shaft 154, and the other end of the coil spring 155 is fixedly connected to the valve body 1;

[0061] When the pressing frame 153 is reset, the coil spring 155 drives the rotating shaft 154 to rotate in the opposite direction, so that the pressing frame 153 is automatically reset, and the metal spring 145 can be assisted to push up the push rod 14 to reduce the resistance of the metal spring 145 .

[0062] like Figures 1 to 8 As shown, a rotating hole 331 is provided in the middle of the bottom end of the fixed shaft 33, a top column 332 is inserted into the rotating hole 331, the bottom end of the top column 332 is provided with a thread, and the bottom end of the top column 332 is threadedly connected to the rotating hole 331, and a plurality of push blocks 333 are slidably connected to the inside of the top end of the fixed shaft 33, and the end of the push block 333 away from the top column 332 is rotatably connected to the rotating column 335, and a fourth spring 334 is fixed to the side of the top end of the push block 333 away from the rotating ring 336, and the other end of the fourth spring 334 is fixedly connected to the fixed shaft 33, the top end of the top column 332 is set to be conical, and the bottom end of the push block 333 is provided with a sloped surface near the top column 332.

[0063] The slope of the push block 333 is in close contact with the slope of the top of the top column 332;

[0064] After the fixed shaft 33 is installed, the top of the fixed shaft 33 will be inserted into the interior of the rotating groove 311. Therefore, during the rotation of the ball 31, the rotating groove 311 will rub against the top of the fixed shaft 33. Long-term friction will cause the friction position between the top of the fixed shaft 33 and the rotating groove 311 to be worn, causing the ball 31 to move downward, affecting the alignment between the ball 31 and the valve seat base 13. Therefore, a push block 333 is set inside the fixed shaft 33. In the initial state, the fourth spring 334 pushes the push block When the top of the push column 332 rises, it pushes the push block 333 to extend from the inside of the fixed shaft 33. At this time, the push block 333 pushes the rotating column 335 to fit closely with the inner wall of the rotating groove 311, so that the rotating column 335 can be supported on the inner wall of the rotating groove 311. At this time, the rotating column 335 can roll on the inner wall of the rotating groove 311, reducing the friction between the fixed shaft 33 and the rotating groove 311.

[0065] like Figures 1 to 8 As shown, the bottom end of the top column 332 is rotatably connected to a rotating ring 336 , and the diameter of the rotating ring 336 matches the diameter of the bottom end of the top column 332 ;

[0066] When rotating the top column 332, the rotating ring 336 is rotated downward. After rotation, the rotating ring 336 is twisted to drive the top column 332 to rotate. After use, the rotating ring 336 is rotated in the opposite direction to reset it to the bottom of the top column 332, which can make it easier to rotate the top column 332.

[0067] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An L-type fixed ball three-way ball valve, characterized by: The valve body comprises a valve body, a feed port is fixed on the front end of the valve body, a discharge port is fixed on the left side of the valve body, a valve cover is installed on the right side of the valve body, a ball is rotatably connected to the inside of the valve body, a turbine box is installed on the top of the valve body through a bracket, a connecting shaft is rotatably connected to the inside of the bracket, the top end of the connecting shaft is connected to the turbine box, the bottom end of the connecting shaft is plugged into the top end of the ball, a fixed shaft is installed on the bottom end of the valve body, a rotation groove is opened at the bottom end of the ball, and the top end of the fixed shaft is inserted into the inside of the rotation groove; The valve seat base is provided with a mounting groove on a side of the valve seat base close to the sphere, a sealing ring is provided inside the mounting groove, and a side of the sealing ring away from the valve seat base can be closely attached to the surface of the sphere, a plurality of first springs are provided at equal intervals on a side of the valve seat base away from the sphere, and the valve seat base pushes the sealing ring tightly against the surface of the sphere through the elastic force of the first springs, and two push rods are symmetrically provided on both sides below the sphere; During the rotation of the ball, the valve seat base is pushed by the push rod, so that the sealing ring is actively separated from the ball.

2. The L-shaped fixed ball three-way ball valve according to claim 1, characterized in that: The feed port and the valve cover are symmetrically provided with limit grooves on the inside about the vertical center line of the connecting shaft. A spring seat is sleeved on the end of the valve seat base away from the sphere. The end of the spring seat away from the valve seat base is slidably connected to the inside of the limit groove. The first spring is inserted into the inside of the spring seat. Among them, the outer side of the spring seat is provided with an O-ring for sealing the spring seat and the limit groove, and the inside of the spring seat is also inlaid with an O-ring for sealing the spring seat and the valve seat base.

3. The L-shaped fixed ball three-way ball valve according to claim 2, characterized in that: Two sets of top blocks are fixed to the bottom end of the sphere, and the top blocks are distributed at equal intervals around the axial direction of the sphere. The bottom end of the push rod is rotatably connected to a connecting seat, and a guide shell is provided below the connecting seat. A slider is fixed to the bottom end of the connecting seat, and the slider is slidably connected to the inside of the guide shell. A guide rod is fixed to the inside of the guide shell, and the guide rod passes through the inside of the slider. The bottom end of the guide shell is fixedly connected to the inner wall of the valve body, and a plurality of rolling blocks are provided on the end of the connecting seat away from the push rod. The length of each top block occupies one quarter of the circumference of the bottom end of the sphere, and the length of the top block reserves space for placing the connecting seat. Slopes for guidance are set on both ends of the top block towards the push rod side.

4. The L-shaped fixed ball three-way ball valve according to claim 3, characterized in that: The outer sleeve of the guide rod of the guide housing is provided with a second spring, and the second spring is arranged on a side of the slide block close to the push rod.

5. The L-shaped fixed ball three-way ball valve according to claim 3, characterized in that: The bottom end of the push rod near the connecting seat is provided with an arc surface, and the top end is set at a right angle. The bottom end of the connecting seat near the push rod is also provided with an arc surface, and the top end is set at a right angle. The arc surface is used for the push rod to rotate downward, and the right angle is used for supporting the push rod and the connecting seat.

6. The L-shaped fixed ball three-way ball valve according to claim 5, characterized in that: A metal shrapnel is fixed to one side of the bottom end of the connecting seat close to the push rod. The metal shrapnel is provided with an upward bent end close to one end of the push rod, and the top end of the bent end is tightly attached to the bottom end of the push rod.

7. The L-shaped fixed ball three-way ball valve according to claim 6, characterized in that: A pressure frame is provided in the middle of the push rod, and a rotating shaft is fixed at the bottom end of the pressure frame. The rotating shaft is rotatably connected to the inside of the valve body. Telescopic blocks are provided on both sides of the fixed shaft. The telescopic blocks are slidably connected to both sides of the bottom end of the valve body. A third spring is fixed on both sides of the telescopic block, and the other end of the third spring is fixedly connected to the valve body. A pull rod is fixed on the side of the middle of the rotating shaft away from the telescopic block, and a pull rope is fixed on the side of the top of the telescopic block close to the rotating shaft, and the other end of the pull rope is fixedly connected to the pull rod end of the rotating shaft.

8. The L-shaped fixed ball three-way ball valve according to claim 7, characterized in that: Coil springs are fixed to both ends of the rotating shaft, and the other end of the coil spring is fixedly connected to the valve body.

9. The L-shaped fixed ball three-way ball valve according to claim 1, characterized in that: A rotating hole is provided in the middle of the bottom end of the fixed shaft, a top column is inserted into the rotating hole, a thread is provided at the bottom end of the top column, and the bottom end of the top column is threadedly connected to the rotating hole. A plurality of push blocks are slidably connected to the top end of the fixed shaft, and one end of the push block away from the top column is rotatably connected to the rotating column. A fourth spring is fixed to the side of the top end of the push block away from the rotating ring, and the other end of the fourth spring is fixedly connected to the fixed shaft. The top end of the top column is set to a cone shape, and a slope is provided on the side of the bottom end of the push block close to the top column; Among them, the slope surface of the push block is in close contact with the slope surface of the top end of the top column.

10. The L-shaped fixed ball three-way ball valve according to claim 9, characterized in that: The bottom end of the top column is rotatably connected to a rotating ring, and the diameter of the rotating ring matches the diameter of the bottom end of the top column.

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