A full-bore eccentric ball valve with a flow guide orifice

Abstract

This invention discloses a full-bore eccentric ball valve with a flow guide orifice, relating to the field of ball valve technology. It includes a valve body and a T-shaped valve core. Two symmetrically distributed transmission components are located on the outside of the valve core. These transmission components are connected to sealing components via second extrusion components. Stepped holes are formed at both ends of the flow guide orifice, and sealing tubes are slidably connected inside each of the two stepped holes. The two transmission components are connected to the two sealing tubes via two sets of first extrusion components. A flushing component is located inside the second housing outside the valve seat. This invention provides protection for the valve's contact sealing components, preventing wear from affecting the overall sealing effect of the valve. It also effectively prevents eddies, vibrations, and noise generated when water flows through the valve, ensuring smooth water flow. Furthermore, during valve closing and opening, it flushes the area between the valve seat and the sealing components, as well as between the valve seat and the sealing tube, thereby removing impurities.

Description

Technical Field

[0001] This invention relates to the field of ball valve technology, specifically to a full-bore eccentric ball valve with a flow guide orifice. Background Technology

[0002] The working principle of an eccentric ball valve is to open or close the valve by rotating the valve core. Ball valves are easy to operate, small in size, can be made in large diameters, have a simple structure, are easy to maintain, and the sealing surface and the ball are always in a closed state, making them less susceptible to erosion by the medium. Therefore, they are widely used.

[0003] The prior art CN 217422256 U discloses an eccentric ball valve with a flow guide hole, including a valve body, a valve core, and a drive unit. The valve body has an internal medium flow channel overlapping the X-axis. The valve core is rotatably mounted in a double-eccentric manner, with its rotation axis parallel to the Y-axis. It has internal flow guide holes of equal diameter to the high-pressure and low-pressure ports of the valve body, and an external sealing body capable of blocking the high-pressure port of the valve body. When the valve core rotates to the open state, a gap connecting the flow guide holes and the high-pressure port of the valve body is left, communicating with the internal cavity of the valve body. The drive unit is used to drive the valve core to rotate relative to the valve body. Although this eccentric ball valve with a flow guide hole reduces the eddy currents of the high-speed fluid inside by setting a flow guide hole of equal diameter to the high-pressure port of the valve body inside the valve core, thereby reducing noise and vibration and ensuring the stability of valve operation, this eccentric ball valve... During opening and closing operations, some friction will still occur between the valve core and the valve seat. Over time, with the increase in the number of opening and closing operations, wear will inevitably occur at the contact and sealing parts between the valve core and the valve seat, affecting the overall sealing effect of the valve. Moreover, when the valve is open, the guide hole on the valve core is not sealed with the inlet and outlet of the valve, so water will still enter the valve cavity and cause some eddies and vibrations. This will result in a generally poor effect on anti-eddy current, anti-vibration, and noise reduction. Furthermore, when the valve is closed, impurities such as mud and sand are easily trapped at the contact and sealing parts between the valve seat and the valve core. These impurities will not only affect the sealing effect but also accelerate the wear of the contact and sealing parts, which will directly affect the service life of the valve core and valve seat and the reliability of the valve. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a full-bore eccentric ball valve with a flow guide orifice, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a full-bore eccentric ball valve with a flow guide hole, comprising a valve body and a T-shaped valve core. The valve body includes a first housing and a second housing. The valve core has a flow guide hole with the same diameter as the high-pressure port and low-pressure port of the valve body inside. The valve core is provided with a sealing assembly on the outside. The second housing has a valve seat adapted to the sealing assembly inside. The valve core has two symmetrically distributed transmission assemblies on the outside. Each of the two transmission assemblies has a valve stem connected to the first housing. The first housing has two limiting blocks fixedly connected inside. The angle between the line connecting the two limiting blocks and the valve stem is 90 degrees. A positioning block is fixedly connected between the two limiting blocks on the outside of the transmission assembly.

[0008] The valve core is provided with a second extrusion assembly, and the transmission assembly is connected to the sealing assembly through the second extrusion assembly;

[0009] Both ends of the flow guide hole are provided with stepped holes, and a sealing tube is slidably connected inside the two stepped holes. A sealing ring is provided on the outer surface of the sealing tube. Two sets of first extrusion components are provided outside the valve core. The two transmission components are respectively connected to the two sealing tubes through the two sets of first extrusion components.

[0010] The second housing has a flushing assembly located outside the valve seat, and the flushing assembly is connected to the first extrusion assembly.

[0011] Preferably, the transmission assembly includes a hollow connecting seat, which is fixedly connected to the outer surface of the valve core. The valve stem is rotatably connected to the connecting seat, and a disc-shaped transmission disk is provided on the valve stem inside the connecting seat. A torsion spring connects the transmission disk and the valve stem.

[0012] Preferably, the outer circular surface of the transmission disk is provided with a first transmission groove, the first transmission groove is arc-shaped, one end of the first transmission groove is inclined, and the second extrusion assembly is connected to the first transmission groove.

[0013] Preferably, the second extrusion assembly includes a second slide and a rod-shaped second extruder. The second slide is fixedly connected to the outer surface of the valve core, the second extruder is slidably connected to the second slide, and a second return spring is provided between the second extruder and the second slide. One end of the second extruder is connected to the sealing assembly, and the other end is provided with a second roller. The second roller contacts the transmission disc, and a second push rod is provided on the outside of the second extruder.

[0014] Preferably, the sealing assembly includes a disc-shaped seal and an annular spherical crown. The outer surface of the seal is spherical, and the spherical crown is installed on the outside of the seal. The seal is fixedly connected to the second extrusion member, and an inclined pressure rod is connected between the second extrusion member and the seal. The pressure rod is slidably connected to the valve core.

[0015] Preferably, the outer circular surface of the transmission disk has two second transmission grooves, the second transmission grooves are arc-shaped, one end of the second transmission groove is inclined, and the two second transmission grooves are axially symmetrically distributed along the axis of the transmission disk.

[0016] Preferably, the first extrusion assembly includes a first slide block and a rod-shaped first extrusion member. The first slide block is fixedly connected to the outside of the valve core, the first extrusion member is slidably connected to the first slide block, and a first return spring is provided between the first extrusion member and the first slide block. One end of the first extrusion member is connected to a sealing tube, and the other end is provided with a first roller. The first roller is connected to a transmission disc, and a first push rod is provided on the outside of the first extrusion member.

[0017] Preferably, the flushing assembly includes an annular water storage component, which is fixedly connected to the inside of the second housing. The inner diameter of the water storage component is larger than the outer diameter of the valve seat. The inner circular surface of the water storage component has several through holes arranged in an annular array on the outer side of the valve seat. The inside of the water storage component has an annular water storage cavity communicating with the through holes. The side of the water storage cavity near the first housing is open. A sliding sealing assembly is slidably connected inside the water storage cavity. A third return spring is connected between the sliding sealing assembly and the water storage component.

[0018] Preferably, the sliding sealing assembly includes an annular pressure plate and a rubber ring, both of which are adapted to the water storage chamber.

[0019] Preferably, a valve actuator is provided on the outside of the first housing, and the valve actuator is connected to the valve stem.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, the present invention provides a full-bore eccentric ball valve with a flow guide orifice, which has the following beneficial effects:

[0022] 1. When the valve is opened and closed, there is no relative sliding friction between the ball crown and the valve seat. This effectively avoids wear on the contact sealing parts between the ball crown and the valve seat during the opening and closing process, thus protecting the contact sealing parts of the valve and preventing wear from affecting the overall sealing effect of the valve. It also reduces the number of failures caused by wear during use, thereby reducing the frequency of maintenance of both parts and improving their service life to a certain extent.

[0023] 2. Furthermore, the guide hole on the valve core can be connected and sealed with the high-pressure port and low-pressure port on the first housing and the second housing, thereby preventing water from flowing into the valve cavity through gaps when passing through the guide hole. Moreover, since the inner diameter of the guide hole is the same as the inner diameter of the high-pressure port and the low-pressure port of the valve, it can effectively prevent eddies, vibrations and noise from being generated when the water flows through the valve, thereby improving the anti-eddy current, anti-vibration and noise reduction effect of the valve and ensuring the smooth flow of water.

[0024] 3. Furthermore, during the valve's closing and opening processes, the water jet from the flushing assembly flushes the space between the valve seat and the sealing assembly, as well as between the valve seat and the sealing pipe, removing impurities. This prevents impurities trapped between the valve seat and the sealing assembly from affecting the seal after the valve is closed, and similarly prevents impurities from affecting the seal between the valve seat and the sealing pipe, thus ensuring the valve's sealing performance. At the same time, it also avoids accelerating the wear between the valve seat and the sealing assembly due to impurities, thereby further improving the service life of related components and the reliability of the valve. Attached Figure Description

[0025] Figure 1 This is a frontal sectional view of the valve body of the present invention.

[0026] Figure 2 This is a schematic diagram of the front cross-sectional structure of the valve body of the present invention;

[0027] Figure 3 This is a frontal three-dimensional structural diagram of the valve core of the present invention;

[0028] Figure 4 This is a side view of the three-dimensional structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the frontal cross-sectional structure of the present invention;

[0030] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0031] Figure 7 This is a schematic diagram of the front sectional view of the valve core of the present invention;

[0032] Figure 8 This is a top sectional view of the valve body of the present invention.

[0033] Figure 9 This is a top cross-sectional view of the structure of the valve in the open state of the present invention;

[0034] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point B;

[0035] Figure 11 This is a top sectional view of the folded sealing tube structure of the present invention;

[0036] Figure 12 This is a top sectional view of the valve structure before it is closed, according to the present invention.

[0037] Figure 13 This is a top sectional view of the structure of the valve after it is closed according to the present invention;

[0038] Figure 14 This is a side-view perspective three-dimensional structural diagram of the second housing of the present invention;

[0039] Figure 15 This is a front sectional view of the flushing component of the present invention;

[0040] Figure 16 This is a frontal cross-sectional view of the flushing component of the present invention.

[0041] In the figure: 1. First housing; 2. Second housing; 3. Valve core; 301. Guide hole; 302. Stepped hole; 4. Valve stem; 5. Valve seat; 6. Sealing assembly; 601. Seal; 602. Ball cap; 7. Sealing tube; 701. Sealing ring; 8. Transmission assembly; 801. Connecting seat; 802. Transmission disc; 8021. First transmission groove; 8022. Second transmission groove; 803. Torsion spring; 9. First extrusion assembly; 901. First extrusion element; 902. First return spring; 903. First slide; 904. 10. First push rod; 11. First roller; 12. Second extrusion assembly; 13. Second slide block; 14. Second extrusion piece; 15. Second return spring; 16. Second return spring; 17. Second roller; 18. Second push rod; 19. Flushing assembly; 10. Water storage component; 10. Water storage chamber; 11. Rubber ring; 11. Pressure plate; 12. Through hole; 13. Third return spring; 14. Limiting block; 15. Positioning block; 16. Pressure rod; 17. Protective cover; 18. Valve actuator. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] Example 1

[0047] This invention provides, for example Figure 1 , Figures 3 to 5 as well as Figures 8 to 13 The image shows a full-bore eccentric ball valve with a flow guide orifice:

[0048] The valve body includes a valve body and a T-shaped valve core 3. The valve body includes a first housing 1 and a second housing 2. The valve core 3 has a guide hole 301 with the same diameter as the high pressure port and low pressure port of the valve body. The valve core 3 is provided with a sealing assembly 6 on the outside. The second housing 2 is provided with a valve seat 5 adapted to the sealing assembly 6. The first housing 1 is provided with a valve actuator 16 on the outside. The valve actuator 16 is connected to the valve stem 4.

[0049] The sealing assembly 6 includes a disc-shaped seal 601 and an annular spherical crown 602. The outer surface of the seal 601 is spherical, and the spherical crown 602 is installed on the outside of the seal 601. The seal 601 is fixedly connected to the second extrusion member 1002, and an inclined pressure rod 14 is connected between the second extrusion member 1002 and the seal 601. The pressure rod 14 is slidably connected to the valve core 3.

[0050] The valve core 3 is provided with two symmetrically distributed transmission components 8 on its exterior. Each of the two transmission components 8 is provided with a valve stem 4 connected to the first housing 1. The first housing 1 is fixedly connected with two limiting blocks 12. The angle between the line connecting the two limiting blocks 12 and the valve stem 4 is ninety degrees. The transmission component 8 is fixedly connected with a positioning block 13 between the two limiting blocks 12 on its exterior.

[0051] The valve core 3 is provided with a second extrusion assembly 10, and the transmission assembly 8 is connected to the sealing assembly 6 through the second extrusion assembly 10.

[0052] The transmission assembly 8 includes a hollow connecting seat 801, which is fixedly connected to the outer surface of the valve core 3. The valve stem 4 is rotatably connected to the connecting seat 801, and a disc-shaped transmission disk 802 is provided on the valve stem 4 inside the connecting seat 801. A torsion spring 803 is connected between the transmission disk 802 and the valve stem 4.

[0053] The outer circular surface of the transmission disk 802 is provided with a first transmission groove 8021. The first transmission groove 8021 is arc-shaped and one end of the first transmission groove 8021 is inclined. The second extrusion assembly 10 is connected to the first transmission groove 8021.

[0054] The second extrusion assembly 10 includes a second slide block 1001 and a rod-shaped second extrusion member 1002. The second slide block 1001 is fixedly connected to the outer surface of the valve core 3. The second extrusion member 1002 is slidably connected to the second slide block 1001, and a second return spring 1003 is provided between the second extrusion member 1002 and the second slide block 1001. One end of the second extrusion member 1002 is connected to the sealing assembly 6, and the other end is provided with a second roller 1004. The second roller 1004 is located inside the first transmission groove 8021, and a second push rod 1005 is provided outside the second extrusion member 1002.

[0055] Working principle: When the valve is in the open state, the guide hole 301 on the valve core 3 is exactly aligned with...

[0056] The high-pressure port and low-pressure port on the first housing 1 and the second housing 2 are aligned. At this time, water can flow through the high-pressure port, the guide hole 301, and the low-pressure port through the valve. Moreover, in this state, the torsion spring 803 is in a compressed state, and the positioning block 13 is in contact with one of the limiting blocks 12. Specifically, as shown below... Figure 8 and Figure 9 As shown;

[0057] When the valve needs to be closed, the valve actuator 16 drives the valve stem 4 to rotate counterclockwise around its axis by a certain angle (the specific rotation direction is as follows). Figure 9(As indicated by the middle arrow), the valve stem 4 will also drive the transmission disc 802 to rotate synchronously, and the inclined end of the first transmission groove 8021 will gradually approach the second roller 1004. During this process, since the torsion spring 803 is in a compressed state, the valve core 3 and the sealing assembly 6 will not rotate under the action of the rebound force of the torsion spring 803. Therefore, the rotation of the valve stem 4 will first restore the torsion spring 803 from the compressed state to a normal state that is neither compressed nor stretched (specifically as follows). Figure 11 As shown), after reaching this state, the valve actuator 16 drives the valve stem 4 to continue rotating counterclockwise. At this time, because the torsion spring 803 itself has a certain elasticity, the valve stem 4 can drive the connecting seat 801 to rotate through the torsion spring 803. The connecting seat 801 then drives the valve core 3 and the sealing assembly 6 to rotate (the rotation direction is as shown). Figure 11 (As indicated by the middle arrow), and the transmission disc 802 will also rotate synchronously, and the second extrusion assembly 10 will also deflect and move synchronously with the valve core 3, until the sealing assembly 6 rotates to ninety degrees, and the spherical crown 602 on the sealing assembly 6 corresponds exactly to the valve seat 5 (specifically as shown in the image). Figure 12 As shown), the positioning block 13 will also rotate 90 degrees with the connecting seat 801 and be blocked and limited by another limiting block 12; then the valve actuator 16 drives the valve stem 4 to continue to rotate counterclockwise. At this time, under the limiting action of the limiting block 12 on the positioning block 13, the connecting seat 801, valve core 3 and sealing assembly 6 will not rotate, while the valve stem 4 will drive the transmission disc 802 to continue to rotate a certain angle. During this process, the torsion spring 803 will be stretched to a certain extent. The inclined surface of the first transmission groove 8021 gradually contacts the second roller 1004 and... This is achieved by the second roller 1004 pressing and pushing the second pressing member 1002, which slides on the second slide block 1001 and compresses the second return spring 1003. The sliding of the second pressing member 1002, along with the pressure rod 14, pushes the sealing member 601 and the ball crown 602 towards the valve seat 5, ultimately pressing the ball crown 602 tightly against the valve seat 5. The valve actuator 16 then stops driving the valve stem 4, thereby sealing the valve seat 5 and closing the valve. (Specifically, as shown...) Figure 13 As shown), when closed, there is no relative sliding friction between the ball crown 602 and the valve seat 5, so wear on both can be avoided during opening and closing. The setting of the pressure rod 14 can make the sealing element 601 more evenly subjected to the thrust from the second extrusion member 1002, ensuring a reliable seal between the valve seat 5 and the sealing assembly 6.

[0058] When the valve needs to be opened, the valve actuator 16 drives the valve stem 4 and the transmission disc 802 to rotate clockwise by the same angle as when it is closed. Similarly, the torsion spring 803, which is in a stretched state, will first prevent the connecting seat 801, valve core 3, and sealing assembly 6 from rotating. During this process, the first transmission groove 8021 will first deflect to the second roller 1004 along with the transmission disc 802. Then, under the rebound force of the second return spring 1003, the second roller 1004 slides into the first transmission groove 8021 along the inclined plane, thereby causing the second pressing member 1002 to drive the sealing member 601 and the ball crown 602 to slide away from the valve seat 5. The ball crown 602 disengages from the valve seat 5. When the torsion spring 803 returns to its normal state, the valve actuator 16 drives the valve stem 4 to continue rotating clockwise. At this time, the valve stem 4 can drive the connecting seat 801, valve core 3, and sealing assembly 6 to rotate 90 degrees through the torsion spring 803. The limit block 12 and positioning block 13 will also limit the rotation of the valve core 3, ensuring that the guide hole 301 corresponds exactly to the high pressure port and low pressure port on the first housing 1 and the second housing 2, thereby opening the valve. Moreover, there is no relative sliding friction between the ball crown 602 and the valve seat 5 during the opening process, thus avoiding wear on both during the opening and closing process.

[0059] Example 2

[0060] This invention provides, for example Figures 1 to 13 The image shows a full-bore eccentric ball valve with a flow guide orifice:

[0061] Both ends of the guide hole 301 are provided with stepped holes 302. The interior of each stepped hole 302 is slidably connected with a sealing tube 7, and a sliding sealing ring is provided between the stepped hole 302 and the sealing tube 7. The outer surface of the sealing tube 7 is provided with a sealing ring 701. The valve core 3 is provided with two sets of first extrusion components 9. The two transmission components 8 are respectively connected to the two sealing tubes 7 through the two sets of first extrusion components 9.

[0062] Two second transmission grooves 8022 are provided on the outer circular surface of the transmission disk 802. The second transmission grooves 8022 are arc-shaped, one end of the second transmission grooves 8022 is inclined, and the two second transmission grooves 8022 are axially symmetrically distributed along the axis of the transmission disk 802. The two sets of first extrusion components 9 can be connected to the two second transmission grooves 8022 respectively.

[0063] The first extrusion assembly 9 includes a first slide block 903 and a rod-shaped first extrusion member 901. The first slide block 903 is fixedly connected to the outside of the valve core 3. The first extrusion member 901 is slidably connected to the first slide block 903. A first return spring 902 is provided between the first extrusion member 901 and the first slide block 903. One end of the first extrusion member 901 is connected to the sealing tube 7, and the other end is provided with a first roller 905. The first roller 905 abuts against the outer circular surface of the transmission disc 802. A first push rod 904 is provided on the outside of the first extrusion member 901.

[0064] Working principle: During the process of the valve being in the closed state, such as Figure 13 As shown, the first roller 905 is located within the second transmission groove 8022 and at the end furthest from the inclined surface. During the process of the valve actuator 16 driving the valve stem 4 clockwise to open the valve, while the torsion spring 803 is being restored from its stretched state to its normal state, the valve stem 4 will cause the transmission disc 802 to rotate clockwise by a certain angle due to the rebound force of the torsion spring 803. This causes the inclined surface end of the second transmission groove 8022 to approach the first roller 905. Specifically, as shown... Figure 12 As shown, the valve actuator 16 then drives the connecting seat 801, valve core 3, and sealing assembly 6 to rotate 90 degrees clockwise via the valve stem 4 and torsion spring 803, specifically as follows: Figure 11 As shown, at this time, the positioning block 13 deflects from one of the limiting blocks 12 to the other limiting block 12, thus achieving the purpose of rotating and positioning by ninety degrees. Then, the valve actuator 16 will still drive the valve stem 4 to continue rotating at a certain angle. At this time, under the limiting action of the limiting block 12 and the positioning block 13, the connecting seat 801, the valve core 3, and the sealing assembly 6 will not rotate. As the valve stem 4 and the transmission disc 802 continue to rotate, the inclined surface of the second transmission groove 8022 will also contact the first roller 905 and, through the first... A roller 905 presses and pushes the first pressing member 901, causing the first pressing member 901 to slide on the first slide block 903 and compress the first return spring 902. The sliding first pressing member 901 then pushes the sealing tube 7 towards the valve seat 5 until the valve stem 4 stops rotating. At this point, one of the sealing tubes 7 is pressed tightly against the valve seat 5 by the sealing ring 701 on its outer surface, and the other sealing tube 7 is pressed tightly against the inner surface of the first housing 1 by the sealing ring 701 on its outer surface. Specifically, as shown... Figure 1 , 5 As shown in Figure 9, the guide hole 301 on the valve core 3 is connected to and sealed with the high pressure port and low pressure port on the first housing 1 and the second housing 2. Since the inner diameter of the guide hole 301 is the same as the inner diameter of the high pressure port and the low pressure port of the valve, it can effectively prevent water from generating eddies, vibrations and noise when flowing through the valve.

[0065] Furthermore, a protective cover 15 can be installed on the outside of the first extrusion assembly 9 and the second extrusion assembly 10 to protect the first extrusion assembly 9 and the second extrusion assembly 10.

[0066] Example 3

[0067] This invention provides, for example Figure 1 , Figure 2 , Figure 5 , Figure 6 as well as Figures 14 to 16 The image shows a full-bore eccentric ball valve with a flow guide orifice:

[0068] The second housing 2 is provided with a flushing assembly 11 located outside the valve seat 5 inside the second housing 2. The flushing assembly 11 is connected to the first extrusion assembly 9.

[0069] The flushing assembly 11 includes an annular water storage component 1101, which is fixedly connected to the inside of the second housing 2. The inner diameter of the water storage component 1101 is larger than the outer diameter of the valve seat 5. The inner circular surface of the water storage component 1101 is located outside the valve seat 5 and has several through holes 1105 arranged in an annular array. The inside of the water storage component 1101 is provided with an annular water storage cavity 1102 that communicates with the through holes 1105. The side of the water storage cavity 1102 closest to the first housing 1 is open. A sliding sealing assembly is slidably connected inside the water storage cavity 1102. A third return spring 1106 is connected between the sliding sealing assembly and the water storage component 1101.

[0070] The sliding sealing assembly includes an annular pressure plate 1104 and a rubber ring 1103. Both the pressure plate 1104 and the rubber ring 1103 are adapted to the water storage chamber 1102. The third return spring 1106 can push the pressure plate 1104 and the rubber ring 1103 to the opening of the water storage chamber 1102 near the valve core 3 through its rebound force. During this process, the sliding of the rubber ring 1103 will create a negative pressure in the inner cavity of the water storage chamber 1102, thereby drawing external water into the water storage chamber 1102 through the through hole 1105 to achieve the purpose of water storage.

[0071] Working principle: When the valve is closed, the transmission assembly 8 presses the sealing assembly 6 onto the valve seat 5 by squeezing the second squeezing member 1002, thereby achieving valve closure and sealing. During the process of the second squeezing member 1002 being squeezed and slid by the transmission assembly 8, the second push rod 1005 on the second squeezing member 1002 can enter the interior of the water storage chamber 1102 through the opening of the water storage chamber 1102, and push the pressure plate 1104 and the rubber ring 1103 to slide towards the through hole 1105, and compress the third return spring 1106 to a certain extent. At this time, the water in the water storage chamber 1102 can be sprayed between the sealing assembly 6 and the valve seat 5 through the through hole 1105, thereby removing impurities adhering to the sealing assembly 6 and the valve seat 5, thus preventing some impurities from getting mixed in during the closure and sealing process between the sealing assembly 6 and the valve seat 5. During the valve opening process, the second pressing element 1002 and the second push rod 1005 will first be pulled out from the water storage chamber 1102. Under the action of the torsion spring 803, the valve core 3 and the sealing component 6 will then deflect, so it will not affect the opening and closing of the valve. Moreover, during this process, the third return spring 1106 will return the pressure plate 1104 and the rubber ring 1103 to the original position through rebound, and achieve the purpose of water storage.

[0072] Similarly, when the valve is opened, the first extrusion member 901 pushes the sealing tube 7 to press it tightly against the valve seat 5. At the same time, the first extrusion member 901 also pushes the pressure plate 1104 and the rubber ring 1103 through the first push rod 904. As a result, water is sprayed between the sealing tube 7 and the valve seat 5 to remove impurities between the sealing tube 7 and the valve seat 5 and prevent impurities from being trapped between the sealing tube 7 and the valve seat 5.

[0073] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A full-bore eccentric ball valve with a flow guide hole, comprising a valve body and a T-shaped valve core (3), the valve body comprising a first housing (1) and a second housing (2), the valve core (3) having a flow guide hole (301) of equal diameter to the high-pressure port and low-pressure port of the valve body, and a sealing assembly (6) being provided on the outside of the valve core (3), and a valve seat (5) adapted to the sealing assembly (6) being provided inside the second housing (2), characterized in that: The valve core (3) is provided with two symmetrically distributed transmission components (8) on its outside. Each of the two transmission components (8) is provided with a valve stem (4) connected to the first housing (1). The first housing (1) is fixedly connected with two limiting blocks (12). The angle between the line connecting the two limiting blocks (12) and the valve stem (4) is ninety degrees. The transmission component (8) is fixedly connected with a positioning block (13) between the two limiting blocks (12). The valve core (3) is provided with a second extrusion assembly (10), and the transmission assembly (8) is connected to the sealing assembly (6) through the second extrusion assembly (10); Both ends of the guide hole (301) are provided with stepped holes (302), and the interior of the two stepped holes (302) is slidably connected with a sealing tube (7). The outer surface of the sealing tube (7) is provided with a sealing ring (701). The valve core (3) is provided with two sets of first extrusion assemblies (9). The two transmission assemblies (8) are respectively connected to the two sealing tubes (7) through the two sets of first extrusion assemblies (9). The interior of the second housing (2) is provided with a flushing assembly (11) located outside the valve seat (5). The flushing assembly (11) is connected to the second extrusion assembly (10) and the first extrusion assembly (9) respectively. The transmission assembly (8) includes a hollow connecting seat (801), which is fixedly connected to the outer surface of the valve core (3). The valve stem (4) is rotatably connected to the connecting seat (801), and a disc-shaped transmission disc (802) is provided on the valve stem (4) inside the connecting seat (801). A torsion spring (803) is connected between the transmission disc (802) and the valve stem (4). The outer circular surface of the transmission disk (802) is provided with a first transmission groove (8021). The first transmission groove (8021) is arc-shaped, and one end of the first transmission groove (8021) is inclined. The second extrusion assembly (10) is connected to the first transmission groove (8021). The outer circular surface of the transmission disk (802) has two second transmission grooves (8022). The second transmission grooves (8022) are arc-shaped, and one end of the second transmission grooves (8022) is inclined. The two second transmission grooves (8022) are symmetrically distributed along the axis of the transmission disk (802). The two sets of first extrusion components (9) are respectively connected to the two second transmission grooves (8022).

2. The full-bore eccentric ball valve with guide hole according to claim 1, characterized in that: The second extrusion assembly (10) includes a second slide (1001) and a rod-shaped second extrusion member (1002). The second slide (1001) is fixedly connected to the outer surface of the valve core (3). The second extrusion member (1002) is slidably connected to the second slide (1001). A second return spring (1003) is provided between the second extrusion member (1002) and the second slide (1001). One end of the second extrusion member (1002) is connected to the sealing assembly (6), and the other end is provided with a second roller (1004). The second roller (1004) is in contact with the transmission disc (802). A second push rod (1005) is provided on the outside of the second extrusion member (1002).

3. The full-bore eccentric ball valve with guide hole according to claim 2, characterized in that: The sealing assembly (6) includes a disc-shaped seal (601) and an annular spherical crown (602). The outer surface of the seal (601) is spherical. The spherical crown (602) is installed on the outside of the seal (601). The seal (601) is fixedly connected to the second extruder (1002). An inclined pressure rod (14) is connected between the second extruder (1002) and the seal (601). The pressure rod (14) is slidably connected to the valve core (3).

4. The full-bore eccentric ball valve with guide hole according to claim 1, characterized in that: The first extrusion assembly (9) includes a first slide (903) and a rod-shaped first extrusion member (901). The first slide (903) is fixedly connected to the outside of the valve core (3). The first extrusion member (901) is slidably connected to the first slide (903). A first return spring (902) is provided between the first extrusion member (901) and the first slide (903). One end of the first extrusion member (901) is connected to the sealing tube (7), and the other end is provided with a first roller (905). The first roller (905) is connected to the transmission disc (802), and a first push rod (904) is provided on the outside of the first extrusion member (901).

5. The full-bore eccentric ball valve with guide hole according to claim 4, characterized in that: The flushing assembly (11) includes an annular water storage component (1101), which is fixedly connected to the inside of the second housing (2). The inner diameter of the water storage component (1101) is larger than the outer diameter of the valve seat (5). The inner circular surface of the water storage component (1101) is provided with several through holes (1105) arranged in an annular array on the outside of the valve seat (5). The inside of the water storage component (1101) is provided with an annular water storage cavity (1102) that communicates with the through holes (1105). The side of the water storage cavity (1102) near the first housing (1) is open. The inside of the water storage cavity (1102) is slidably connected with a sliding sealing component. A third return spring (1106) is connected between the sliding sealing component and the water storage component (1101).

6. The full-bore eccentric ball valve with guide hole according to claim 5, characterized in that: The sliding sealing assembly includes an annular pressure plate (1104) and a rubber ring (1103), both of which are adapted to the water storage chamber (1102).

7. The full-bore eccentric ball valve with guide hole according to claim 1, characterized in that: The first housing (1) is provided with a valve actuator (16) on its exterior, and the valve actuator (16) is connected to the valve stem (4).

Images