Upper pressure inlet type eccentric rotary valve

Abstract

The invention discloses an upper pressure inlet type eccentric rotary valve, and relates to the technical field of upper pressure inlet type valves. An upper pressure inlet type eccentric rotary valve comprises a valve body, the valve body comprises a liquid inlet flow channel, a liquid flow channel and a liquid outlet flow channel which are internally communicated in sequence, the liquid flow channel is provided with a sleeve, the sleeve is provided with a liquid inlet port and a liquid outlet port, the liquid inlet port is communicated with the liquid inlet flow channel, and the liquid outlet port is communicated with the liquid outlet flow channel; the liquid inlet port is provided with a valve core, the valve body is provided with a valve cover, the valve cover is provided with a control mechanism connected with the valve core, and the control mechanism is configured to be capable of driving the valve core to rotate so as to open / close the liquid inlet port; the valve element is provided with an opening position and a closing position, and liquid entering the liquid inlet flow channel moves towards the liquid outlet flow channel through the sleeve and impacts the valve element so that the valve element can move from the opening position to the closing position. The invention has the function of being easy to open but not easy to close.

Description

Technical Field

[0001] The present application relates to the technical field of top-inlet pressure-type valves, and in particular to a top-inlet pressure-type eccentric rotary valve. Background Art

[0002] ‌Valves are control components in fluid delivery systems. They are mainly used to open and close pipelines, control flow direction, and adjust and control the parameters of the delivery medium. Valves are widely used in modern times to control the flow of various types of fluids such as air, water, steam, corrosive media, mud and oil. ‌Generally, according to their functions, valves can be divided into shut-off valves, check valves, regulating valves, etc. Various types of valves have functions such as shut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief.

[0003] The top-pressure rotary valve is one of the valves commonly used in the chemical, metallurgical, and grain processing industries. It is a mechanical device that can rotate the valve from the open position to the closed position by rotating parts such as a rotating baffle, handwheel, or actuator. Typically, ball valves are widely used in high-pressure liquid environments.

[0004] The opening and closing part of the ball valve is a ball. The handwheel drives the valve stem to rotate, thereby driving the ball to rotate around the axis of the ball valve to achieve the opening and closing function; specifically, the ball can rotate 90 degrees. When the ball rotates to the same direction as the fluid flow, the valve opens, and when it is vertical, the valve closes. The opening and closing operation of the ball valve is relatively convenient. However, the ball valve is easy to open but not easy to close. When the ball valve is opened, it is difficult for the ball to rotate again to block the fluid under the impact of the fluid. The user needs to apply a large force to the handwheel to complete the rotation of the valve stem. This is not suitable for some occasions that require emergency closure.

[0005] Therefore, how to design a rotary valve that is easy to close is an urgent problem to be solved. Summary of the invention In order to make the rotary valve easy to close, the present application provides an upward pressure type eccentric rotary valve.

[0006] The application provides a top-pressure eccentric rotary valve adopts the following technical solution: A top-inlet pressure-type eccentric rotary valve, comprising a valve body, the valve body comprising an inlet flow channel, a liquid flow channel and a liquid outlet flow channel which are sequentially connected to each other, the liquid flow channel is provided with a sleeve, the sleeve has an inlet port and a liquid outlet port, the inlet port is connected to the inlet flow channel, and the liquid outlet port is connected to the liquid outlet flow channel; the inlet port is provided with a valve core, the valve body is provided with a valve cover, the valve cover is provided with a control mechanism connected to the valve core, and the control mechanism is configured to drive the valve core to rotate so as to open / close the inlet port; The valve core has an open position and a closed position. When the valve core is in the open position, the liquid entering the liquid inlet channel moves toward the liquid outlet channel through the sleeve and impacts the valve core to help the valve core move from the open position to the closed position.

[0007] By adopting the above technical solution, the control mechanism can drive the valve core to rotate and drive the valve core to the open position or the closed position to open and close the liquid inlet port. When the valve core moves from the open position to the closed position, the fluid entering the liquid inlet channel will help the valve core to rotate. Therefore, the present application can use the impact of the fluid to help the rotary valve close.

[0008] Preferably, the control mechanism comprises a valve stem, a receiving hole communicating with the liquid inlet channel is formed through the valve cover, the valve stem is fitted and penetrated through the receiving hole, and the valve stem and the receiving hole are rotatably connected; the valve stem extends into the liquid inlet channel and is provided with a limiting component, the valve core is limited on the valve stem by the limiting component, and the valve stem is configured to drive the valve core to rotate eccentrically; The valve stem is also configured to be able to drive the valve core to rotate to any position within the range from an open position to a closed position and stay there.

[0009] By adopting the above technical solution, rotating the valve stem can drive the valve core to rotate to realize the opening and closing of the valve core to the liquid inlet port; in addition, since the valve core can be rotated and stay in any position within the range from the open position to the closed position, the opening of the rotary valve can be adjusted and the flow rate can be controlled.

[0010] Preferably, the limiting assembly comprises a connecting sleeve and an elastic member, both of which are mounted on the valve stem, and the valve core is squeezed by the connecting sleeve and the elastic member to be limited on the valve stem; the liquid inlet port has an inclined guiding portion, and the valve core has an inclined matching portion; When the valve core is in the closed position, the inclined guide portion is movably attached to the inclined matching portion, and the valve core closes the liquid inlet port; When the valve core moves from the closing position to the opening position, the inclined matching portion slides relative to the inclined guiding portion, and the elastic member is compressed.

[0011] By adopting the above technical solution, when the valve core moves from the closed position to the open position, the inclined matching part slides relative to the inclined guiding part, and the elastic member is compressed. Since the inclined guiding part is movably attached to the inclined matching part when the valve core is in the closed position, the valve core is more reliable in closing the liquid inlet port, and this sealing method based on the inclined surface has better sealing performance.

[0012] Preferably, the valve core includes a connecting ring, which is sleeved on the valve stem, and the connecting ring is limited along the axial direction of the valve stem under the extrusion of the connecting sleeve and the elastic member, and the connecting ring is connected to a connecting arm, and the connecting arm is connected to a connecting circular plate for closing the liquid inlet port; the connecting ring has a sliding block, and the valve stem has a sliding groove arranged along the axial direction of the valve stem, and the sliding block is slidably connected to the sliding groove.

[0013] By adopting the above technical solution, the valve stem can be used to drive the connecting ring to rotate, thereby driving the connecting circular plate to rotate. When the valve core moves from the closed position to the open position, the elastic member will be compressed and the sliding block will slide on the valve stem.

[0014] Preferably, the connecting sleeve and the valve stem are threadedly connected.

[0015] By adopting the above technical solution, the connecting sleeve can be disassembled and the valve core can be disassembled for replacement or maintenance.

[0016] Preferably, the inclined guiding portion and the inclined matching portion both include a wear-resistant layer on the outer wall.

[0017] By adopting the above technical solution, the wear resistance of the inclined guiding portion and the inclined matching portion can be improved to increase the service life.

[0018] Preferably, a hand wheel is mounted on one end of the valve stem away from the liquid inlet channel, and a locking member for locking the valve stem is also mounted on the valve cover.

[0019] By adopting the above technical solution, the hand wheel can be used to easily drive the valve stem to rotate, and the locking piece can be used to easily lock the valve stem to prevent the valve core from rotating.

[0020] Preferably, the liquid flow channel includes a step portion, and the sleeve is installed on the step portion; an annular groove 1 and an annular groove 2 are formed between the step portion and the sleeve, and the annular groove 1 is installed with a sealing ring, and the annular groove 2 is installed with a sealing gasket.

[0021] By adopting the above technical solution, the sealing performance of the connection between the sleeve and the step portion can be improved by using a sealing ring and a sealing gasket.

[0022] Preferably, the valve body comprises a communication port at the top, and the valve cover closes the communication port; the valve cover and the valve body are detachably connected.

[0023] By adopting the above technical solution, the valve cover can be disassembled to clean the inside of the valve body.

[0024] Preferably, the valve body is provided with a first docking hole, the valve cover is provided with a second docking hole, and the first docking hole and the second docking hole are connected together by a bolt.

[0025] By adopting the above technical solution, the valve cover can be easily removed by removing the bolts.

[0026] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The control mechanism can be used to drive the valve core to rotate and drive the valve core to the open position or the closed position to open and close the liquid inlet port. When the valve core moves from the open position to the closed position, the fluid entering the liquid inlet channel will help the valve core to rotate. Therefore, the present application can use the impact of the fluid to help the rotary valve close; 2. Since the valve core can be rotated and stay in any position from the open position to the closed position, the opening of the rotary valve can be adjusted and the flow rate can be controlled; 3. When the valve core moves from the closed position to the open position, the inclined matching part slides relative to the inclined guiding part, and the elastic member is compressed. Since the inclined guiding part is movably attached to the inclined matching part when the valve core is in the closed position, the valve core is more reliable in closing the liquid inlet port, and this sealing method based on the inclined surface has better sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the overall structure of the top-pressure eccentric rotary valve in the embodiment of the present application; Figure 2 is a cross-sectional view of an upward pressure-type eccentric rotary valve in an embodiment of the present application; Figure 3 yes Figure 2 A magnified view of part A; Figure 4 It is a structural diagram used to reflect the limited components.

[0028] Markings in the accompanying drawings: 1. valve body; 11. liquid inlet channel; 12. liquid flow channel; 121. step portion; 1211. ring groove one; 1212. ring groove two; 1213. sealing ring; 1214. sealing gasket; 13. liquid outlet channel; 14. connecting port; 2. sleeve; 21. liquid inlet port; 211. inclined guide portion; 22. liquid outlet port; 3. valve core; 31. connecting ring; 311. sliding block; 32. connecting arm; 33. connecting circular plate; 331. inclined matching portion; 4. valve cover; 41. receiving hole; 42. docking hole two; 43. bolt; 5. control mechanism; 51. valve stem; 511. sliding groove; 52. limiting component; 521. connecting sleeve; 522. elastic member; 6. hand wheel; 61. locking member. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] The embodiment of the present application discloses a top-pressure eccentric rotary valve.

[0032] Reference Figure 1 and Figure 2 The upper pressure-type eccentric rotary valve includes a valve body 1, which includes an inlet channel 11, a liquid flow channel 12 and a liquid outlet channel 13 which are connected to each other in sequence. The inlet channel 11, the liquid flow channel 12 and the liquid outlet channel 13 are distributed from right to left. The inlet channel 11 is higher than the liquid outlet channel 13, and the liquid flow channel 12 is vertically arranged. The liquid flow channel 12 is installed with a sleeve 2, and the sleeve 2 has a liquid inlet port 21 and a liquid outlet port 22. The liquid inlet port 21 is connected to the inlet channel 11, and the liquid outlet port 22 is connected to the outlet channel 13; therefore, the liquid entering the inlet channel 11 will pass through the sleeve 2 and reach the outlet channel 13 for discharge.

[0033] Reference Figure 2 , Figure 3 and Figure 4 , the liquid inlet port 21 is provided with a valve core 3, the valve body 1 is provided with a valve cover 4, the valve cover 4 is provided with a control mechanism 5 connected to the valve core 3, the control mechanism 5 can drive the valve core 3 to rotate so as to open / close the liquid inlet port 21, and the valve core 3 has an open position and a closed position. Specifically, the control mechanism 5 includes a valve stem 51, the valve cover 4 is provided with a receiving hole 41 connected to the liquid inlet channel 11, the receiving hole 41 is vertically arranged, the valve stem 51 is fitted and penetrated through the receiving hole 41, and the valve stem 51 and the receiving hole 41 are rotatably connected; the valve stem 51 extends into the liquid inlet channel 11 and is provided with a limiting component 52, the valve core 3 is limited on the valve stem 51 by the limiting component 52, and the valve stem 51 can drive the valve core 3 to rotate eccentrically.

[0034] After the application is connected to the hydraulic system, in addition to maintaining the system pressure, the application is mainly used for pressure relief. Under normal conditions, the valve core 3 is in the closed position to close the liquid inlet port 21; when the system pressure is too high, the valve core 3 moves from the closed position to the open position, and the liquid flows through the sleeve 2 to the liquid outlet channel 13 and out to relieve pressure.

[0035] When the valve core 3 is in the closed position, liquid accumulates in the liquid inlet channel 11 and the liquid pressure presses the valve core 3 . At this time, it is difficult to use the valve stem 51 to drive the valve core 3 to rotate.

[0036] When the valve core 3 is in the open position, the liquid entering the liquid inlet channel 11 moves toward the liquid outlet channel 13 through the sleeve 2 and impacts the valve core 3. This fluid impact force can help the valve core 3 move from the open position to the closed position, so it is easier to use the valve stem 51 to drive the valve core 3 to rotate at this time.

[0037] Based on the above actions, this application is easy to close but not easy to open.

[0038] In addition, the valve stem 51 can drive the valve core 3 to rotate to any position within the range from the open position to the closed position and stop. In this regard, since the stop position of the valve core 3 is controllable, the opening of the rotary valve can be adjusted and the flow rate can be controlled.

[0039] Reference Figure 3 and Figure 4 The limiting component 52 includes a connecting sleeve 521 and an elastic member 522. The elastic member 522 is preferably a disc spring in this embodiment. The connecting sleeve 521 and the elastic member 522 are both installed on the valve stem 51. The valve core 3 is squeezed by the connecting sleeve 521 and the elastic member 522 and is limited on the valve stem 51. The rotation of the valve stem 51 can drive the valve core 3 to rotate, and the valve core 3 can slide up and down on the valve stem 51; the liquid inlet port 21 has an inclined guide portion 211, and the inclined guide portion 211 is inclined outward from bottom to top, and the valve core 3 has an inclined matching portion 331.

[0040] When the valve core 3 is in the closed position, the inclined guide portion 211 is movably attached to the inclined matching portion 331, and the valve core 3 closes the liquid inlet port 21; when the valve core 3 moves from the closed position to the open position, the inclined matching portion 331 slides relative to the inclined guide portion 211, and the elastic member 522 is compressed. It should be noted that when the valve core 3 is in the closed position, in order to ensure the reliability of the valve core 3 closing the liquid inlet port 21, the elastic member 522 is preferably in a compressed state. Of course, at this time, the elastic member 522 cannot be in an extreme compression state to prevent the subsequent valve core 3 from failing to open the liquid inlet port 21.

[0041] Reference Figure 3 and Figure 4 Specifically, the valve core 3 includes a connecting ring 31, which is sleeved on the valve stem 51. The connecting ring 31 is limited along the axial direction of the valve stem 51 under the extrusion of the connecting sleeve 521 and the elastic member 522. The connecting ring 31 is connected to a connecting arm 32, and the connecting arm 32 is connected to a connecting circular plate 33 for closing the liquid inlet port 21. An inclined matching portion 331 is formed on the connecting circular plate 33; the connecting ring 31 has a sliding block 311, which is vertically arranged. The valve stem 51 has a sliding groove 511 arranged along the axial direction of the valve stem 51, and the sliding block 311 is slidably connected to the sliding groove 511.

[0042] Reference Figure 3In order to improve the sealing between the sleeve 2 and the liquid flow channel 12, the liquid flow channel 12 includes a step portion 121, and the sleeve 2 is installed on the step portion 121; a ring groove 1211 and a ring groove 2 1212 are formed between the step portion 121 and the sleeve 2, and the ring groove 1211 is installed with a sealing ring 1213, such as an O-ring, and the ring groove 2 1212 is installed with a sealing gasket 1214 made of rubber material.

[0043] Reference Figure 2 and Figure 3 In order to facilitate cleaning of the valve core 3, the connecting sleeve 521 and the valve stem 51 are threadedly connected, and the connecting sleeve 521 can be removed to remove the valve core 3. In order to facilitate cleaning of the inside of the valve body 1, the valve body 1 includes a communication port 14 at the top, and the valve cover 4 closes the communication port 14. The valve cover 4 and the valve body 1 are detachably connected; specifically, the valve body 1 is provided with a docking hole 1, and the valve cover 4 is provided with a docking hole 2 42, and the docking hole 1 and the docking hole 2 42 are connected together with a bolt 43.

[0044] Reference Figure 2 In order to ensure the reliability of opening and closing of the present application, a hand wheel 6 is installed at one end of the valve stem 51 away from the liquid inlet channel 11, and a locking member 61 for locking the valve stem 51 is also installed on the valve cover 4, wherein the locking member 61 can be a locking ring, and its specific structure is the prior art and will not be repeated here.

[0045] Reference Figure 3 and Figure 4 In order to improve the service life of the present application, the inclined guide portion 211 and the inclined matching portion 331 both include a wear-resistant layer on the outer wall, and the valve stem 51 also includes a wear-resistant layer on the outer wall, specifically, STL alloy can be sprayed on the surface of the structure.

[0046] The implementation principle of the upward pressure eccentric rotary valve in the embodiment of the present application is: First, connect this application to the hydraulic system. Under normal conditions, the valve core 3 is in the closed position, and liquid will accumulate in the liquid inlet channel. To relieve the pressure in the system, first ensure that the locking member 61 releases the lock on the valve stem 51, and then turn the hand wheel 6 to drive the valve stem 51 to rotate and drive the connecting ring 31 to rotate. At this time, the connecting ring 31 will drive the connecting arm 32 to rotate. Since the elastic member 522 provides space for the connecting circular plate 33 to move slightly up and down, the connecting arm 32 will drive the connecting circular plate 33 to rotate to the step portion 121. The connecting circular plate 33 will move slightly upward when rotating. During the rotation process, the elastic member 522 is compressed. At this time, the liquid inlet port 21 is opened, and the liquid will pass through the inside of the sleeve 2 and reach the liquid outlet channel 13 and be discharged.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An upward pressure type eccentric rotary valve, characterized in that: The invention comprises a valve body (1), wherein the valve body (1) comprises a liquid inlet channel (11), a liquid flow channel (12) and a liquid outlet channel (13) which are connected to each other in sequence, wherein the liquid flow channel (12) is provided with a sleeve (2), wherein the sleeve (2) has a liquid inlet port (21) and a liquid outlet port (22), wherein the liquid inlet port (21) is connected to the liquid inlet channel (11), and the liquid outlet port (22) is connected to the liquid outlet channel (13); the liquid inlet port (21) is provided with a valve core (3), the valve body (1) is provided with a valve cover (4), and the valve cover (4) is provided with a control mechanism (5) connected to the valve core (3), wherein the control mechanism (5) is configured to be able to drive the valve core (3) to rotate so as to open / close the liquid inlet port (21); The valve core (3) has an open position and a closed position. When the valve core (3) is in the open position, liquid entering the liquid inlet channel (11) moves toward the liquid outlet channel (13) through the sleeve (2) and impacts the valve core (3), thereby helping the valve core (3) to move from the open position to the closed position.

2. The upward pressure type eccentric rotary valve according to claim 1, characterized in that: The control mechanism (5) comprises a valve stem (51); a receiving hole (41) communicating with the liquid inlet channel (11) is formed through the valve cover (4); the valve stem (51) is fitted and penetrated in the receiving hole (41); and the valve stem (51) and the receiving hole (41) are rotatably connected; the valve stem (51) extends into the liquid inlet channel (11) and is provided with a limiting component (52); the valve core (3) is limited on the valve stem (51) by the limiting component (52); and the valve stem (51) is configured to drive the valve core (3) to rotate eccentrically; The valve stem (51) is also configured to be able to drive the valve core (3) to rotate to any position within the range from an open position to a closed position and to stay there.

3. The upward pressure type eccentric rotary valve according to claim 2, characterized in that: The limiting assembly (52) comprises a connecting sleeve (521) and an elastic member (522), the connecting sleeve (521) and the elastic member (522) are both mounted on the valve stem (51), and the valve core (3) is squeezed by the connecting sleeve (521) and the elastic member (522) to be limited on the valve stem (51); the liquid inlet port (21) has an inclined guiding portion (211), and the valve core (3) has an inclined matching portion (331); When the valve core (3) is in the closed position, the inclined guide portion (211) is movably attached to the inclined matching portion (331), and the valve core (3) closes the liquid inlet port (21); When the valve core (3) moves from the closed position to the open position, the inclined matching portion (331) slides relative to the inclined guiding portion (211), and the elastic member (522) is compressed.

4. The upward pressure type eccentric rotary valve according to claim 3, characterized in that: The valve core (3) comprises a connecting ring (31), the connecting ring (31) is sleeved on the valve stem (51), the connecting ring (31) is limited along the axial direction of the valve stem (51) under the extrusion of the connecting sleeve (521) and the elastic member (522), the connecting ring (31) is connected to a connecting arm (32), and the connecting arm (32) is connected to a connecting circular plate (33) for closing the liquid inlet port (21); the connecting ring (31) has a sliding block (311), the valve stem (51) is provided with a sliding groove (511) arranged along the axial direction of the valve stem (51), and the sliding block (311) is slidably connected to the sliding groove (511).

5. The upward pressure type eccentric rotary valve according to claim 3, characterized in that: The connecting sleeve (521) and the valve stem (51) are threadedly connected.

6. The upward pressure type eccentric rotary valve according to claim 3, characterized in that: The inclined guide portion (211) and the inclined matching portion (331) both include a wear-resistant layer on the outer wall.

7. The upward pressure type eccentric rotary valve according to claim 2, characterized in that: A hand wheel (6) is mounted on one end of the valve stem (51) away from the liquid inlet channel (11), and a locking member (61) for locking the valve stem (51) is also mounted on the valve cover (4).

8. The upward pressure type eccentric rotary valve according to claim 1, characterized in that: The liquid flow channel (12) comprises a step portion (121), and the sleeve (2) is mounted on the step portion (121); a first annular groove (1211) and a second annular groove (1212) are formed between the step portion (121) and the sleeve (2); a sealing ring (1213) is mounted on the first annular groove (1211), and a sealing gasket (1214) is mounted on the second annular groove (1212).

9. The upward pressure type eccentric rotary valve according to claim 1, characterized in that: The valve body (1) comprises a communication port (14) at the top end, and the valve cover (4) closes the communication port (14); the valve cover (4) and the valve body (1) are detachably connected.

10. The upward pressure type eccentric rotary valve according to claim 9, characterized in that: The valve body (1) is provided with a first docking hole, the valve cover (4) is provided with a second docking hole (42), and the first docking hole and the second docking hole (42) are connected together by a bolt (43).

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