Double-blocking and double-discharging ball valve
By designing a double-blocking, double-discharge ball valve, the double-blocking effect is achieved using a water-stopping head and a limiting mechanism, which solves the problems of water leakage and backflow caused by ball valve leakage, ensuring that the water flow is intercepted and preventing pollution.
Patent Information
- Application Number
- CN202422977143.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-03
AI Technical Summary
When leakage occurs at the ball-shaped opening and closing part of a traditional ball valve, the water flow can easily flow from the inlet to the outlet, causing the water to become contaminated, and there is also a possibility of backflow to the inlet.
A double-blocking, double-discharge ball valve was designed. One opening and closing point is formed by a ball-shaped opening and closing element, and another opening and closing point is formed by a water-stopping head. Combined with a water-stopping mechanism and a limiting mechanism, a double-blocking effect is achieved to prevent water leakage and backflow.
It effectively prevents water leakage and backflow, ensuring that the water flow is trapped in the outlet joint, avoiding water waste and pollution, and preventing the inlet pipe from being contaminated.
Smart Images
Figure CN223895091U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a ball valve, and more particularly to a double-blocking double-discharge ball valve. Background Technology
[0002] A ball valve is a type of valve that uses a ball-shaped opening and closing element to control its opening and closing. A ball valve has an inlet and an outlet. The ball-shaped opening and closing element is located in the valve body. When the ball valve is open, the inlet and outlet are connected through the ball-shaped opening and closing element. When the ball valve needs to be closed, simply rotate the ball-shaped opening and closing element by handwheeling it, so that the inlet and outlet are no longer connected through the ball-shaped opening and closing element, thus closing the ball valve.
[0003] Therefore, it can be seen that traditional ball valves only have one opening and closing point formed by the ball-shaped opening and closing element. When water leaks at the location of the ball-shaped opening and closing element, even when the ball valve is closed, the water flow in the inlet pipe connected to the inlet connector can flow into the outlet connector, causing the ball valve to leak. A single opening and closing point makes it extremely difficult to prevent the ball valve from leaking. Moreover, when there is a water leakage problem in the ball-shaped opening and closing element, not only will water flow from the inlet connector to the outlet connector, but water flow in the outlet pipe connected to the outlet connector will also flow back into the inlet connector, ultimately causing the water flow to be contaminated. Summary of the Invention
[0004] The present invention aims to solve the existing technical problem by providing a double-blocking double-discharge ball valve, which can not only intercept water flow in the outlet joint when leakage occurs at the location of the ball-shaped opening and closing element, but also prevent water backflow from causing water contamination.
[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:
[0006] This utility model discloses a double-blocking, double-discharge ball valve, including a valve body, an inlet connector on the left side of the valve body, and an outlet connector on the right side of the valve body. The valve body contains a matching spherical opening and closing element, with a valve stem at its upper end. The valve stem extends upwards to the valve body and is equipped with a handwheel. A water-stop connector connected to the outlet connector is located on the right side wall of the valve body. A matching water-stopping mechanism is located within the water-stop connector. The water-stopping mechanism includes a water-stop head and a limiting rod located at the center of the right side wall of the water-stop head. When the water-stop head is pushed to the left, the water-stop connector communicates with the outlet connector through the water-stopping mechanism. A limiting mechanism matching the limiting rod is located on the upper left surface of the outlet connector. When the limiting mechanism limits the limiting rod, the water-stop head cannot move.
[0007] The water-stopping mechanism also includes a water-stopping seat located within the water-stopping joint; the inner wall of the water-stopping joint is provided with internal threads, and the water-stopping joint is screwed to the water-stopping seat through the internal threads; the left side of the water-stopping joint is provided with an annular positioning step, and the left end face of the water-stopping seat is in contact with the positioning step; the center of the right end face of the water-stopping seat is provided with a right water passage hole; the center of the left end face of the water-stopping seat is provided with a left water passage hole that communicates with the right water passage hole; the diameter of the left water passage hole is smaller than the diameter of the right water passage hole; a matching guide seat is screwed into the right end opening of the right water passage hole; the center of the guide seat is provided with a guide hole; the guide seat is provided with several evenly distributed water outlet holes; the water-stopping head is coaxial with the left water passage hole, and the left end face of the water-stopping head is in contact with the bottom of the right water passage hole, and the left end face of the water-stopping head blocks and seals the right end opening of the left water passage hole; the limiting rod passes through the guide hole to the right; a spring is provided between the right end face of the water-stopping head and the left end face of the guide seat, outside the limiting rod.
[0008] The guide seat has a positioning part on the outer wall of the right end that fits against the right end face of the waterstop seat. The outer diameter of the positioning part is smaller than the outer diameter of the waterstop seat.
[0009] The outer edge of the left end face of the water-stop head is provided with a water-guiding cone surface that is narrower on the left and wider on the right.
[0010] A ring-shaped connector extends to the left from the inner edge of the left end port of the water outlet connector, and the connector is screwed into the right end port of the water stop connector by internal thread.
[0011] The limiting mechanism includes an adjustment hole on the upper left surface of the water outlet connector, which communicates with the internal space of the water outlet connector; a matching screw is screwed into the adjustment hole; a knob is provided at the upper end of the screw that fits against the upper surface of the water outlet connector; a limiting head is provided at the center of the lower end face of the screw; the guide hole is a square hole, and the limiting rod is a square post; a limiting hole matching the limiting head is provided at the right end of the limiting rod.
[0012] The lower end face of the limiting head has a quick-insertion cone surface that is narrower at the bottom and wider at the top.
[0013] The lower surface of the water outlet connector has a diversion connector; the lower surface of the water outlet connector has a threaded hole that communicates with its internal space; the upper end of the diversion connector has a threaded connector that is threaded into the threaded hole, and the upper end face of the diversion connector is in contact with the lower surface of the water outlet connector; a sealing cap is threaded to the lower end of the diversion connector.
[0014] The beneficial effects of this utility model are:
[0015] Compared with the prior art, the double-blocking double-discharge ball valve with the structure of this utility model can form one opening and closing point through the ball-shaped opening and closing element and another opening and closing point through the water-stop head. When the ball valve is closed, it achieves the effect of double blocking. Therefore, even if water leaks at the opening and closing point where the ball-shaped opening and closing element is located, the opening and closing point where the water-stop head is located can also intercept the water flow in the outlet joint, avoiding the water flow from leaking out through the outlet joint and wasting water resources. Moreover, when the limit head is not inserted into the limit hole, the water-stopping mechanism can play the role of preventing backflow. When the water flow in the outlet pipe connected to the outlet joint flows back, the backflow will push the water-stop head to the left. At the same time, the elastic force of the spring will make the water-stop head quickly move back to the left, so that the backflow can never pass through the left water passage sealed by the water-stop head. This effectively prevents the water flow from flowing back into the inlet pipe connected to the inlet joint and causing the water flow in the inlet pipe to be contaminated. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the double-blocking double-discharge ball valve of this utility model. Detailed Implementation
[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
[0018] Please see Figure 1 This utility model provides a double-blocking double-discharge ball valve, including a valve body 1, an inlet connector 2 located on the left side of the valve body 1, and an outlet connector 3 located on the right side of the valve body 1. The valve body 1 contains a matching spherical opening and closing element 4, with a valve stem 5 at its upper end. The valve stem 5 extends upwards to the outside of the valve body 1 and is equipped with a handwheel 6. A water-stop connector 7 connected to the outlet connector 3 is located on the right side wall of the valve body 1. A matching water-stopping mechanism is located within the water-stop connector 7. The water-stopping mechanism includes a water-stopping head 801 and a limiting rod 802 located at the center of the right side wall of the water-stopping head 801. When the water-stopping head 801 is pushed to the left, the water-stop connector 7 communicates with the outlet connector 3 through the water-stopping mechanism. A limiting mechanism matching the limiting rod 802 is located on the upper left surface of the outlet connector 3. When the limiting mechanism limits the limiting rod 802, the water-stopping head 801 cannot move.
[0019] The water-stopping mechanism also includes a water-stopping seat 803 disposed within the water-stopping joint 7; the inner wall of the water-stopping joint 7 is provided with an internal thread 804, and the water-stopping joint 7 is screwed to the water-stopping seat 803 through the internal thread 804; the left side of the water-stopping joint 7 is provided with an annular positioning step 805, and the left end face of the water-stopping seat 803 is in contact with the positioning step 805; the center of the right end face of the water-stopping seat 803 is provided with a right water passage hole 806; the center of the left end face of the water-stopping seat 803 is provided with a left water passage hole 807 that communicates with the right water passage hole 806; the diameter of the left water passage hole 807 is smaller than the diameter of the right water passage hole 806; the right water passage hole 807... A guide seat 808 is screwed into the right end of the water hole 806; a guide hole 809 is provided in the center of the guide seat 808; several evenly distributed water outlet holes 810 are provided on the guide seat 808; the water stop head 801 is coaxial with the left water passage hole 807, and the left end face of the water stop head 801 is in contact with the bottom of the right water passage hole 806, and the left end face of the water stop head 801 blocks and seals the right end of the left water passage hole 807; the limiting rod 802 passes through the guide hole 809 to the right; a spring 813 is provided between the right end face of the water stop head 801 and the left end face of the guide seat 808 outside the limiting rod 802.
[0020] The guide seat 808 has a positioning part 811 on the outer wall of its right end that fits against the right end face of the water-stop seat 803. The outer diameter of the positioning part 811 is smaller than the outer diameter of the water-stop seat 803.
[0021] The outer edge of the left end face of the water-stop head 801 is provided with a water-guiding cone surface 812 that is narrower on the left and wider on the right.
[0022] A ring-shaped connector 301 extends to the left from the inner edge of the left end port of the water outlet connector 3. The connector 301 is screwed into the right end port of the water stop connector 7 by internal thread 804.
[0023] The limiting mechanism includes an adjustment hole 901 located on the upper left surface of the water outlet connector 3, which communicates with the internal space of the water outlet connector 3; a matching screw 902 is screwed into the adjustment hole 901; a knob 903 is provided at the upper end of the screw 902, which fits against the upper surface of the water outlet connector 3; a limiting head 904 is provided at the center of the lower end face of the screw 902; the guide hole 809 is a square hole, and the limiting rod 802 is a square post; a limiting hole 905 matching the limiting head 904 is provided at the right end of the limiting rod 802.
[0024] The lower end face of the limiting head 904 has a quick-insertion conical surface 906 that is narrow at the bottom and wide at the top.
[0025] The lower surface of the middle part of the water outlet connector 3 has a diversion connector 10; the lower surface of the middle part of the water outlet connector 3 is provided with a screw hole 11 that communicates with its internal space; the upper end of the diversion connector 10 is provided with a screw connector 12 that is screwed into the screw hole 11, and the upper end face of the diversion connector 10 is in contact with the lower surface of the middle part of the water outlet connector 3; a sealing cap 13 is screwed to the lower end of the diversion connector 10.
[0026] The method of using this utility model is as follows:
[0027] The inlet connector 2 can be connected to the inlet pipe, and the outlet connector 3 can be connected to the outlet pipe. When the ball valve needs to be opened, the screw 902 can be rotated by the knob 903, causing the screw 902 to move upward with the limit head 904. After the limit head 904 moves upward and disengages from the limit hole 905, the limit rod 802 is no longer restricted by the limit head 904 and can move along the trajectory of the guide hole 809. Then, the valve stem 5 can be rotated by the handwheel. When the valve stem 5 rotates, the ball-shaped opening and closing element 4 rotates synchronously, thereby connecting the opening and closing hole 401 on the ball-shaped opening and closing element 4 to the inlet connector 2 and the stop connector 7. At this time, the water in the inlet pipe will flow into the water stop connector 7 through the inlet connector 2 and the opening and closing hole 401 on the ball-shaped opening and closing part 4. Then, it will push the water stop head 801 to the right through the left water passage hole 807. After being pressed, the water stop head 801 moves to the right and compresses the spring 813 to the right, so that the spring 813 generates elastic force. When the water stop head 801 moves to the right, the water stop head 801 no longer blocks and seals the right end of the left water passage hole 807. The water can then flow from the left water passage hole 807 into the right water passage hole 806, and then flow into the outlet pipe through the outlet hole 810 and the outlet connector 3 for use.
[0028] When the ball valve needs to be closed, simply rotate the ball valve 4 by handwheel to prevent the inlet connector 2 and outlet connector 3 from passing through the opening and closing hole 401 on the ball valve 4. After losing the thrust of the water flow, the stop head 801 will move to the left and reset under the action of the spring 813, and the limit rod 802 will reset simultaneously. The limit hole 905 at the right end of the limit rod 802 will reset to the position coaxial with the limit head 904. At this time, simply rotate the knob 903 to move the screw 902 down, and the limit head 904 will be inserted into the limit hole 905 again. When the limit head 904 is inserted into the limit hole 905, the limit rod 802 is restricted and cannot move even if it is pushed to the right by the water flow pressure. The left end face of the stop head 801 is pressed tightly against the bottom of the right water passage hole 806, ensuring that the right end of the left water passage hole 807 is blocked and sealed by the stop head 801.
[0029] In summary, this utility model can form one opening and closing point through the ball-shaped opening and closing element 4 and another opening and closing point through the water-stop head 801. When the ball valve is closed, a double-blocking effect is achieved. Therefore, even if water leaks at the opening and closing point where the ball-shaped opening and closing element 4 is located, the opening and closing point where the water-stop head 801 is located can also intercept the water flow in the water outlet connector 3, preventing water from leaking out through the water outlet connector 3 and wasting water resources. Furthermore, when the limiting head 904 is not inserted into the limiting hole 905... The water-stopping mechanism can prevent backflow. When the water in the outlet pipe connected to the outlet connector 3 flows back, the backflow will push the water-stopping head 801 to the left. At the same time, the elastic force of the spring 813 will cause the water-stopping head 801 to quickly move back to the left, so that the backflow can never pass through the left water passage 807 blocked and sealed by the water-stopping head 801. This effectively prevents the water from flowing back into the inlet pipe connected to the inlet connector 2 and causing the water in the inlet pipe to be contaminated.
[0030] The guide seat 808 has a positioning part 811 on the outer wall of its right end that fits against the right end face of the water-stop seat 803. The outer diameter of the positioning part 811 is smaller than the outer diameter of the water-stop seat 803. The presence of the positioning part 811 can position the guide seat 808, avoiding the situation where the initial elastic force of the spring 813 is too large due to the small gap between the water-stop head 801 and the positioning seat 803. This avoids the situation where the water flow is difficult to push the water-stop head 801 to the right due to the excessive initial elastic force of the spring 813.
[0031] The outer edge of the left end face of the water stop head 801 is provided with a water-guiding cone surface 812 that is narrower on the left and wider on the right. The presence of the water-guiding cone surface 812 allows the water flowing from the left water passage 807 into the right water passage 806 to move quickly to the right, ensuring the water flow rate.
[0032] A ring-shaped connector 301 extends to the left from the inner edge of the left end port of the water outlet connector 3. The connector 301 is screwed into the right end port of the water stop connector 7 by the internal thread 804. This fixing method facilitates the disassembly and assembly of the water outlet connector 3 and the water stop connector 7, thereby facilitating the disassembly and assembly of the water stop mechanism.
[0033] The guide hole 809 is a square hole, and the limiting rod 802 is a square column. The guide hole 809 can prevent the limiting rod 802 from rotating when it moves left and right by fitting its inner wall with the outer wall of the limiting rod 802. This allows the limiting hole 905 to be precisely coaxial with the limiting head 904 after the limiting rod 802 is reset.
[0034] The lower end face of the limiting head 904 has a quick-insertion conical surface 906 that is narrow at the bottom and wide at the top. The presence of the quick-insertion conical surface 906 allows the lower end of the limiting head 904 to be quickly inserted into the limiting hole 905 through the upper end port of the limiting hole 905, thereby limiting the limiting rod 802.
[0035] The lower surface of the middle part of the water outlet connector 3 has a diversion connector 10. The lower surface of the middle part of the water outlet connector 3 is provided with a screw hole 11 that communicates with its internal space. The upper end of the diversion connector 10 is provided with a screw connector 12 that is screwed into the screw hole 11. The upper end face of the diversion connector 10 is in contact with the lower surface of the middle part of the water outlet connector 3. A sealing cap 13 is screwed to the lower end of the diversion connector 10. By simply unscrewing the sealing cap 13 from the lower end of the diversion connector 10, another pipeline can be connected through the diversion connector 10. The diversion connector 10 and the water outlet connector 3 drain water at the same time, thus achieving the effect of dual discharge.
Claims
1. A double-blocking, double-discharge ball valve, comprising a valve body, an inlet connector located on the left side of the valve body, and an outlet connector located on the right side of the valve body, wherein the valve body is provided with a matching spherical opening and closing element, the upper end of the spherical opening and closing element is provided with a valve stem, the valve stem extending upwards to the valve body and being provided with a handwheel, characterized in that: The valve body has a water-stop connector on the right side wall that is connected to the water outlet connector; the water-stop connector has a matching water-stop mechanism inside; the water-stop mechanism includes a water-stop head and a limiting rod located at the center of the right side wall of the water-stop head; when the water-stop head is pushed to the left, the water-stop connector is connected to the water outlet connector through the water-stop mechanism; the upper left surface of the water outlet connector has a limiting mechanism that matches the limiting rod; when the limiting mechanism limits the limiting rod, the water-stop head cannot move.
2. The double-blocking double-discharge ball valve according to claim 1, characterized in that: The water-stopping mechanism also includes a water-stopping seat located within the water-stopping joint; the inner wall of the water-stopping joint is provided with internal threads, and the water-stopping joint is screwed to the water-stopping seat through the internal threads; the left side of the water-stopping joint is provided with an annular positioning step, and the left end face of the water-stopping seat is in contact with the positioning step; the center of the right end face of the water-stopping seat is provided with a right water passage hole; the center of the left end face of the water-stopping seat is provided with a left water passage hole that communicates with the right water passage hole; the diameter of the left water passage hole is smaller than the diameter of the right water passage hole; a matching guide seat is screwed into the right end opening of the right water passage hole; the center of the guide seat is provided with a guide hole; the guide seat is provided with several evenly distributed water outlet holes; the water-stopping head is coaxial with the left water passage hole, and the left end face of the water-stopping head is in contact with the bottom of the right water passage hole, and the left end face of the water-stopping head blocks and seals the right end opening of the left water passage hole; the limiting rod passes through the guide hole to the right; a spring is provided between the right end face of the water-stopping head and the left end face of the guide seat, outside the limiting rod.
3. The double-blocking double-discharge ball valve according to claim 2, characterized in that: The guide seat has a positioning part on the outer wall of the right end that fits against the right end face of the waterstop seat. The outer diameter of the positioning part is smaller than the outer diameter of the waterstop seat.
4. A double-blocking, double-discharge ball valve according to claim 2, characterized in that: The outer edge of the left end face of the water-stop head is provided with a water-guiding cone surface that is narrower on the left and wider on the right.
5. A double-blocking, double-discharge ball valve according to claim 1, characterized in that: A ring-shaped connector extends to the left from the inner edge of the left end port of the water outlet connector, and the connector is screwed into the right end port of the water stop connector by internal thread.
6. A double-blocking, double-discharge ball valve according to claim 2, characterized in that: The limiting mechanism includes an adjustment hole on the upper left surface of the water outlet connector, which communicates with the internal space of the water outlet connector; a matching screw is screwed into the adjustment hole; a knob is provided at the upper end of the screw that fits against the upper surface of the water outlet connector; a limiting head is provided at the center of the lower end face of the screw; the guide hole is a square hole, and the limiting rod is a square post; a limiting hole matching the limiting head is provided at the right end of the limiting rod.
7. A double-blocking, double-discharge ball valve according to claim 6, characterized in that: The lower end face of the limiting head has a quick-insertion cone surface that is narrower at the bottom and wider at the top.
8. A double-blocking, double-discharge ball valve according to claim 1, characterized in that: The lower surface of the water outlet connector has a diversion connector; the lower surface of the water outlet connector has a threaded hole that communicates with its internal space; the upper end of the diversion connector has a threaded connector that is threaded into the threaded hole, and the upper end face of the diversion connector is in contact with the lower surface of the water outlet connector; a sealing cap is threaded to the lower end of the diversion connector.