An adaptive locking valve structure

Abstract

The present disclosure provides an adaptive locking valve structure, comprising a valve body, a valve stem disposed within the valve body, and a valve core, wherein the valve stem comprises an outer rod rotatably connected to the valve core and an inner rod rotatably disposed within the outer rod, the outer rod being threadedly connected to the valve body, and the inner rod sliding within the outer rod along the length of the outer rod; the valve structure further comprises an adjusting cap connected to the outer rod, a locking cap rotatably disposed on the adjusting cap and connected to the inner rod, a connecting block being connected to the bottom wall of the locking cap, a connecting groove being provided on the top wall of the adjusting cap for the connecting block to rotate into, the connecting block being used to restrict the locking cap from separating from the adjusting cap along the length of the outer rod; an active cavity being provided at one end of the outer rod near the valve core for the inner rod end to move, a locking member being provided within the active cavity, the locking member being used to lock the outer rod and the valve core, the locking member being unlocked when the inner rod separates from the adjusting cap, and being closed when the inner rod approaches the adjusting cap. In this manner, the rotational connection between the outer rod and the valve core is locked, thereby reducing accidental contact by the outside world and improving the safety of the bellows valve.

Description

Technical Field

[0001] The present disclosure belongs to the field of valve technology, and in particular relates to an adaptive locking valve structure. Background Art

[0002] The bellows valve is a pressure-balanced regulating valve with a compact valve body structure. It uses a bellows as the sealing element of the valve stem, eliminating the shortcomings of ordinary valve stem packing seals that age quickly and are prone to leakage. It has the advantages of low pressure drop loss, large flow rate, and a wide adjustable range. It is widely used in the field of fluid pipelines.

[0003] The current bellows valve includes a valve body, a valve stem and a valve core are arranged on the inside of the valve body, the valve stem is rotatably connected to the valve body, the valve core and the valve stem are rotatably connected, and the outside of the valve core is covered with a bellows. The valve core is driven to move along the length direction of the valve body in the valve body by the rotation of the valve stem. The space where the valve core is located is sealed by using the bellows to achieve sealing of the liquid flow.

[0004] However, when the valve stem is rotated to drive the valve core to move to achieve liquid sealing or to open the channel, since the rotation of the valve stem can still drive the valve core to move, the valve stem is easily accidentally touched by the outside world, causing the valve core to move in the valve body, opening or closing the valve port of the bellows valve, so that the safety of the bellows valve needs to be improved. Summary of the Invention

[0005] To solve the above problems, the present disclosure provides an adaptive locking valve structure, which realizes automatic locking of the valve core by driving the valve stem to move the valve core. The valve stem needs to be unlocked additionally to realize the movement of the valve core, thereby improving the safety of the bellows valve.

[0006] The first aspect of the present disclosure provides an adaptive locking valve structure, comprising a valve body, a valve stem and a valve core arranged in the valve body, the valve stem being threadedly connected to the valve body, the valve core being rotatably connected to the valve stem, a valve cavity for the movement of the valve core being provided in the valve body, a liquid inlet and a liquid outlet being provided on the valve body which are connected to the valve cavity, the valve core being used to move in the valve cavity as the valve stem rotates to open and close the liquid inlet and the liquid outlet, the valve stem comprising an outer rod rotatably connected to the valve core, an inner rod rotating in the outer rod, the outer rod being threadedly connected to the valve body, and the inner rod sliding in the outer rod along the length direction of the outer rod; the valve structure also The cam is adapted to engage the cam of the valve core and engage with the cam to engage the adjusting cap, and the cam is adapted to engage the adjusting cap when the cam is in engagement with the adjusting cap.

[0007] When the valve stem is rotated to drive the valve core to conduct or close the liquid inlet and the liquid outlet, the valve stem is rotated by rotating the adjusting cap. At this time, the locking cap is rotated to drive the connecting block of the locking cap to rotate out of the connecting groove to release the connection between the locking cap and the adjusting cap. The locking cap is then pulled in a direction away from the adjusting cap, driving the inner rod to slide in the outer rod in a direction away from the valve core, so that the outer rod activates the locking of the locking piece, thereby locking the rotational connection between the outer rod and the valve core. At this time, the valve stem cannot be rotated by the valve core, and the valve core is fixed in the state of conducting or closing the liquid inlet and the liquid outlet. The locking of the outer rod and the valve core is released, and the locking cap drives the inner rod to slide toward the valve core. Therefore, the locking piece is opened and closed by the sliding of the inner rod driven by the locking cap, so as to lock the rotational connection between the outer rod and the valve core, which helps to lock the state of the valve core, reduce the accidental touch of the valve stem by the outside, and improve the safety of the bellows valve.

[0008] In some embodiments, the inner rod has a boss portion at one end located in the movable cavity, and the peripheral wall of the boss portion gradually expands toward the direction approaching the valve core, and the locking member includes: an abutment rod, which rotates on the inner wall of the outer rod and rotates in the movable cavity to abut against the inclined side wall of the boss portion; a locking rod, which is connected to the end of the abutment rod away from the boss portion, and the connection between the locking rod and the abutment rod is hinged to the outer rod; the end of the valve core close to the inner rod is provided with a plurality of locking grooves for the locking rod to rotate into.

[0009] When the locking cap drives the inner rod to slide in the direction away from the valve core, the inclined surface of the boss portion on the inner rod abuts the abutting rod, so that the abutting rod rotates in the direction away from the boss portion after being abutted, thereby driving the locking rod to rotate in the direction of the valve core until the locking rod rotates into the locking groove on the valve core, locking the rotational connection between the outer rod and the valve core, thereby locking the rotation of the valve stem and the locking cap; when the locking cap drives the inner rod to slide in the direction close to the valve core, the boss portion on the inner rod disengages from the abutting rod, so that the abutting rod drives the locking rod to rotate in the direction away from the valve core under the action of gravity, thereby rotating the locking rod away from the locking groove to release the lock between the outer rod and the valve core; in this way, the locking and unlocking of the outer rod and the valve core are achieved through the cooperation of the abutting rod and the locking rod, which helps to improve the safety of the bellows valve.

[0010] In some embodiments, the inner rod boss portion is rotatably connected to a rotating block toward the bottom wall of the valve core, and the rotating block is connected to a ejection spring. The outer rod has a partition that separates the movable cavity from the cavity for rotationally connecting the valve core, and the ejection spring is connected to the partition at one end away from the rotating block. The ejection spring is used to push the inner rod to slide toward the locking cap.

[0011] When the locking cap is rotated and the inner rod is driven to slide upward so that the boss pushes the abutment rod away, the locking cap drives the connecting block to rotate out of the connecting groove to release the lock of the locking cap and the adjusting cap in the length direction of the outer rod, and the inner rod and the rotating block rotate relative to each other; then the elastic force of the ejection spring acts on the rotating block and the inner rod, so that the inner rod drives the locking cap to push up from the adjusting cap, and then drives the boss to push the abutment rod away from each other, rotating the locking rod into the locking groove to complete the locking of the outer rod and the valve core, thereby realizing that after the locking cap is rotated, the inner rod automatically pushes up to lock the outer rod and the valve core.

[0012] In some embodiments, the boss portion is provided with an avoidance groove for the abutment rod to rotate into, and the abutment rod is longer than the locking rod. Under the action of gravity, the abutment rod overcomes the gravity of the locking rod and rotates toward the avoidance groove. When the boss portion abuts the abutment rod, the inner rod drives the boss portion to rotate clockwise to correspond the avoidance groove to the abutment rod. When the ejection spring is in a natural state, the abutment rod is located in the avoidance groove, and the locking rod is located in the locking groove. The avoidance groove is used for the boss portion to slide toward the direction of the locking cap and then disengage from the abutment rod.

[0013] When the locking nut is unlocked, the inner rod is driven by the locking nut to overcome the tension of the ejection spring and slide away from the valve core, so that the inner rod slides over the abutment rod through the avoidance groove, thereby facilitating the locking and unlocking of the outer and inner rods.

[0014] In some embodiments, a locking rod is slidably connected to the locking cap, and the locking rod is L-shaped and slides along the radial direction of the locking cap. A locking groove is provided at one end of the inner rod connected to the locking cap for the end of the locking rod to be inserted, and a through groove is provided on the locking cap for the end of the locking rod to slide. A locking spring is connected to the end of the locking rod located in the through groove, and the end of the locking spring away from the locking rod is connected to the wall of the through groove. The locking spring is used to pull the locking rod to drive the end of the locking rod to be inserted into the locking groove.

[0015] With this arrangement, when it is necessary to release the connection between the locking cap and the inner rod, the locking rod is pressed in the opposite direction so that the locking rod compresses the locking spring and slides in the direction away from the inner rod until the end of the locking rod disengages from the locking groove, thereby releasing the connection between the locking cap and the inner rod, which helps to remove the locking cap from the adjusting cap; when the locking cap and the inner rod are to be connected again, the locking rod is aligned with the locking groove, the locking rod is released, and the locking rod slides into the locking groove again under the elastic force of the locking spring to reconnect the locking cap and the inner rod.

[0016] In some embodiments, a clamping rod is slidingly provided on the adjusting cap, and the clamping rod is L-shaped and slides along the radial direction of the adjusting cap. A clamping groove for the end of the clamping rod to be clamped into is provided on the peripheral wall of the outer rod, and a clamping spring is connected to the end of the clamping rod away from the outer rod, and the end of the clamping spring away from the clamping rod is connected to the adjusting cap, and the clamping spring is used to push the clamping rod into the clamping groove.

[0017] With such arrangement, when the connection between the adjusting cap and the outer rod is released, the clamping rod is pressed toward the direction close to the clamping spring, so that the clamping rod overcomes the elastic force of the clamping spring and disengages from the clamping groove, thereby releasing the connection between the adjusting cap and the outer rod; and when connecting the adjusting cap and the outer rod, the clamping rod is aligned with the clamping groove, and the clamping rod is released, and the clamping rod is clamped into the clamping groove under the elastic force of the clamping spring to connect the adjusting cap and the outer rod.

[0018] In some embodiments, the lower end of the locking rod is connected to a shift rod, and a first adjustment slot is provided in the adjustment cap for the shift rod to rotate clockwise with the locking cap, and a second adjustment slot is provided in the adjustment cap for the shift rod to slide, and the second adjustment slot is connected to the first adjustment slot. The locking cap drives the inner rod to slide over the abutment rod and then continues to rotate clockwise, and the shift rod moves from the first adjustment slot into the second adjustment slot, and abuts against the side of the clamping rod away from the clamping spring.

[0019] When the locking cap is rotated to drive the inner rod to continue to rotate clockwise, the locking cap drives the shift rod to rotate in the first adjusting slot until the shift rod rotates to the second adjusting slot and abuts against the side of the connecting rod facing away from the connecting spring. At this time, the locking rod is pulled away from the locking cap, causing the locking spring to stretch. Until the locking rod is disengaged from the locking slot, the shift rod abuts the connecting rod to slide in the direction away from the outer rod to compress the connecting spring until the connecting rod is disengaged from the connecting slot, thereby realizing the simultaneous release of the connection between the locking cap and the inner rod and the connection between the adjusting cap and the outer rod, making the disassembly of the locking cap and the adjusting cap more convenient.

[0020] In some embodiments, one end of the locking rod located in the through slot extends out of the through slot and is located outside the locking cap.

[0021] Such arrangement makes it easy to move the locking rod on the top wall of the locking cap, which helps to connect and disconnect the locking cap and the inner rod, and connect and disconnect the adjusting cap and the outer rod outside the locking cap.

[0022] In some embodiments, a sliding groove is provided on the inner wall of the outer rod, a positioning spring is provided in the sliding groove, and a positioning block is connected to the end of the positioning spring away from the sliding groove wall. A plurality of positioning grooves for inserting the positioning block are provided on the peripheral wall of the inner rod, and the end of the positioning block sliding into the positioning groove is arc-shaped.

[0023] It is arranged in this way so that when the locking cap is rotated and the locking cap is pulled along the length of the valve core, the positioning block is engaged in the positioning groove under the action of the positioning spring, prompting the operator that the locking cap has moved to the current position, and when the locking cap is rotated, the arc-shaped end of the positioning block can be squeezed by the positioning groove wall to compress the positioning spring and slide into the slide groove until it reaches the next positioning groove and then pops out, thereby realizing the positioning sense of the locking cap rotation and sliding.

[0024] In some embodiments, the rotational path distance that the locking cap drives the connecting block to rotate out of the connecting groove, the rotational path distance that the locking cap drives the inner rod to rotate the avoidance groove to correspond to the abutment rod, and the rotational path that the locking cap drives the shift rod to rotate from the first adjustment groove to the second adjustment groove are all the same as the spacing between two adjacent positioning grooves.

[0025] This arrangement allows the operator to be prompted to rotate and slide the locking cap into place through the tactile feel of the positioning block snapping into the positioning slot, which helps to improve the accuracy of the locking cap rotation and sliding, thereby improving the accuracy of the inner rod movement.

[0026] Compared with the prior art, the present disclosure has the following advantages:

[0027] The locking cap drives the inner rod to slide, opening and closing the locking piece, so as to lock the rotational connection between the outer rod and the valve core, which helps to lock the state of the valve core, reduce the valve stem from accidental contact with the outside world, and improve the safety of the bellows valve;

[0028] The ejection spring acts on the rotating block and the inner rod, so that the inner rod drives the locking cap to lift up from the adjusting cap, and then drives the protrusion to push the abutting rods away from each other, rotating the locking rod into the locking groove to complete the locking of the outer rod and the valve core, so that after the locking cap is rotated, the inner rod automatically lifts up to lock the outer rod and the valve core;

[0029] Through the first adjustment slot and the second adjustment slot, with the cooperation of the locking rod and the clamping rod, the connection between the locking cap and the inner rod and the connection between the adjusting cap and the outer rod are simultaneously released, making the disassembly of the locking cap and the adjusting cap more convenient.

[0030] Other features and advantages of the present disclosure will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present disclosure. The purposes and other advantages of the present disclosure can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic diagram of the overall structure of the adaptive locking valve structure provided by an embodiment of the present disclosure;

[0033] Figure 2 A cross-sectional schematic diagram of an adaptive locking valve structure provided by an embodiment of the present disclosure;

[0034] Figure 3 A schematic diagram of the structure of the locking cap and the outer rod provided in an embodiment of the present disclosure;

[0035] Figure 4 A schematic radial cross-sectional view of an adjusting cap provided in an embodiment of the present disclosure;

[0036] Figure 5 A cross-sectional schematic diagram of unlocking the locking cap and the adjusting cap provided in an embodiment of the present disclosure.

[0037] 1. Valve body; 11. Valve chamber; 111. Liquid inlet; 112. Liquid outlet; 12. Upper valve section; 13. Lower valve section; 2. Valve stem; 21. Outer rod; 211. Movable chamber; 212. Rotating groove; 213. Partition plate; 214. Snap-fit ​​groove; 215. Slide; 216. Positioning spring; 217. Positioning block; 22. Inner rod; 221. Boss; 222. Rotating block; 223. Ejection spring; 224. Avoidance groove; 22 5. Locking groove; 226. Positioning groove; 3. Valve core; 31. Corrugated portion; 32. Locking groove; 4. Adjusting cap; 41. Accommodating groove; 42. Connecting groove; 43. Clamping rod; 44. Clamping spring; 45. First adjusting groove; 46. Second adjusting groove; 5. Locking cap; 51. Connecting block; 52. Locking rod; 53. Through groove; 531. Locking spring; 54. Push rod; 6. Locking piece; 61. Abutting rod; 62. Locking rod. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0039] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of the adaptive locking valve structure provided by the embodiment of the present disclosure. Figure 2 This is a cross-sectional schematic diagram of an adaptive locking valve structure provided in an embodiment of the present invention. The valve structure includes a valve body 1, a valve stem 2 and a valve core 3 arranged in the valve body 1. The valve stem 2 is threadedly connected to the valve body 1, and the valve core 3 is rotatably connected to the valve stem 2. A valve cavity 11 for the valve core 3 to move is provided in the valve body 1. A liquid inlet 111 and a liquid outlet 112 connected to the valve cavity 11 are provided on the valve body 1. The valve core 3 is used to move in the valve cavity 11 as the valve stem 2 rotates to open and close the liquid inlet 111 and the liquid outlet 112.

[0040] Exemplarily, the valve body 1 includes an upper valve portion 12 and a lower valve portion 13, and the valve stem 2 is threadedly connected to the upper valve portion 12. The connection between the valve stem 2 and the valve core 3 is located in the upper valve portion 12. The upper end of the valve stem 2 extends from the upper valve portion 12, and the aperture of the hole reserved for the valve stem 2 in the upper valve portion 12 is larger than the valve. The valve cavity 11 is located in the lower valve portion 13, and the liquid inlet 111 and the liquid outlet 112 are both located in the lower valve portion 13. The valve core 3 is located in the lower valve portion 13 and is connected to the bellows 31. The bellows 31 seals the lower valve portion 13 and separates it from the upper valve portion 12, and the bellows 31 is elastic so that the valve core 3 can slide in the valve body 1 along the axis extension direction of the bellows 31.

[0041] In some embodiments, the valve stem 2 includes an outer rod 21 rotatably connected to the valve core 3, an inner rod 22 that rotates within the outer rod 21, and the inner rod 22 slides within the outer rod 21 along the length of the outer rod 21. The valve structure also includes an adjusting cap 4 connected to the outer rod 21, and a locking cap 5 that rotates on the adjusting cap 4 and connected to the inner rod 22. The outer rod 21 has a movable chamber 211 at one end near the valve core 3 for the end of the inner rod 22 to move. A locking member 6 is disposed within the movable chamber 211, which is used to lock the outer rod 21 and the valve core 3. The inner rod 22 releases the adjusting cap 4 as the locking cap 5 moves, unlocking the locking member 6. The inner rod 22 closes the adjusting cap 4 as the locking cap 5 moves closer to the adjusting cap 4.

[0042] In this embodiment, the end of the valve core 3 that is pivotally connected to the outer rod 21 is I-shaped. Therefore, the lower end of the outer rod 21 is provided with an I-shaped groove that matches the I-shaped portion of the valve core 3. This allows the outer rod 21 to rotate relative to the valve core 3 while also driving the valve core 3 to move vertically, thereby opening or closing the liquid inlet 111 and the liquid outlet 112. The I-shaped groove also extends through the circumferential wall of the outer rod 21, allowing the I-shaped portion of the valve core 3 to disengage from the groove. The adjusting cap 4 is provided with a receiving groove 41 for accommodating the locking cap 5. When the locking member 6 does not lock the rotational connection between the outer rod 21 and the valve core 3, the locking cap 5 is located within the receiving groove 41 and is flush with the top wall of the adjusting cap 4.

[0043] It should be noted that, see Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure inside the locking cap 5 and the outer rod 21 provided in an embodiment of the present disclosure. Figure 4Schematic diagram of radial cross section of the adjusting cap 4 provided in the embodiment of the present disclosure. A pair of fixing plates are fixed to the top wall of the locking cap 5, and the locking cap 5 can be driven to rotate by the fixing plates. The bottom wall of the locking cap 5 is connected to a connecting block 51, and a connecting groove 42 for the connecting block 51 to be rotated into is provided on the top wall of the adjusting cap 4. The connecting block 51 is used to limit the locking cap 5 from being separated from the adjusting cap 4 along the length direction of the outer rod 21. The connecting block 51 is located on the bottom wall of the locking cap 5 and is L-shaped. The adjusting cap 4 is provided with a connecting groove 42 for the connecting block 51 to be rotated into. The connecting groove 42 is also L-shaped in the cross section in the axial direction of the adjusting cap 4, so as to limit the locking cap 5 from being separated from the adjusting cap 4 in the vertical direction after the lower end of the connecting block 51 is rotated into the connecting groove 42. In this embodiment, there is a pair of connecting blocks 51, and the connecting blocks 51 are symmetrically arranged along the axis center of the locking cap 5.

[0044] In some embodiments, continue to refer to Figure 2 and Figure 3 The inner rod 22 has a boss portion 221 at one end located in the movable chamber 211, and the peripheral wall of the boss portion 221 is gradually expanded toward the direction close to the valve core 3. The locking member 6 includes an integrally formed abutment rod 61 and a locking rod 62. The abutment rod 61 rotates on the inner wall of the outer rod 21, and rotates in the movable chamber 211 to abut against the inclined side wall of the boss portion 221. The locking rod 62 is connected to the end of the abutment rod 61 away from the boss portion 221. The connection between the locking rod 62 and the abutment rod 61 is hinged to the outer rod 21. A plurality of locking grooves 32 for the locking rod 62 to rotate into are provided at the end of the valve core 3 close to the inner rod 22.

[0045] In this embodiment, the boss portion 221 slides vertically within the movable cavity 211. The boss portion 221 abuts the abutting rod 61 via its inclined circumferential wall. The abutting rod 61 and the locking rod 62 form a pair, with the abutting rod 61 and the locking rod 62 symmetrically arranged along the axis of the inner rod 22. A rotation groove 212 connecting to the movable cavity 211 is also defined within the outer rod 21. Both the abutting rod 61 and the locking rod 62 rotate within the rotation groove 212. The end of the abutting rod 61 away from the locking rod 62 rotates within the movable cavity 211 and abuts against the inclined circumferential wall of the boss portion 221. The end of the locking rod 62 away from the abutting rod 61 rests within the locking groove 32, locking the rotation of the outer rod 21 and the valve core 3. The locking grooves 32 are evenly spaced along the axial direction of the valve core 3. They are located on the top circumferential wall of the I-shaped portion of the valve core 3.

[0046] In some embodiments, the boss portion 221 of the inner rod 22 is rotatably connected to a rotating block 222 toward the bottom wall of the valve core 3, and the rotating block 222 is connected to a ejection spring 223. The outer rod 21 has a partition 213 that separates the movable chamber 211 from the chamber for rotationally connecting the valve core 3. The ejection spring 223 is connected to the partition 213 at one end away from the rotating block 222. The ejection spring 223 is used to push the inner rod 22 to slide toward the locking cap 5.

[0047] In this embodiment, the rotation axis of the rotating block 222 extends along the length of the inner rod 22. The partition 213 supports the ejection spring 223, allowing the ejection spring 223 to push the rotating block 222 and the inner rod 22 upward. When the connecting block 51 of the locking cap 5 rotates into the connecting groove 42, the rotating block 222 compresses the ejection spring 223, disengaging the abutment rod 61 from the boss portion 221, and the locking rod 62 also disengages from the locking groove 32.

[0048] In some embodiments, the boss portion 221 is provided with an escape groove 224 for the abutment rod 61 to rotate into. The abutment rod 61 is longer than the locking rod 62. Under the action of gravity, the abutment rod 61 overcomes the gravity of the locking rod 62 and rotates toward the escape groove 224. When the boss portion 221 abuts the abutment rod 61, the inner rod 22 drives the boss portion 221 to rotate clockwise to align the escape groove 224 with the abutment rod 61. When the ejection spring 223 is in the natural state, the abutment rod 61 is located in the escape groove 224, and the locking rod 62 is located in the locking groove 32. The escape groove 224 is used to allow the boss portion 221 to slide toward the locking cap 5 and then disengage from the abutment rod 61.

[0049] In this embodiment, the escape groove 224 extends through the boss portion 221 along the length of the inner rod 22. When the abutment rod 61 rotates into the escape groove 224, the end of the locking rod 62 remains within the locking groove 32. When the inner rod 22 slides upward and the abutment rod 61 passes through the escape groove 224, the inner rod 22 slides over the abutment rod 61. Then, under the action of gravity, the abutment rod 61 rotates toward the valve core 3, thereby driving the locking rod 62 to rotate away from the valve core 3, causing the locking rod 62 to rotate away from the locking groove 32, thereby releasing the lock between the outer rod 21 and the valve core 3.

[0050] In some embodiments, see Figure 4 and Figure 5 , Figure 5 A cross-sectional schematic diagram of the unlocking of the locking cap 5 and the adjusting cap 4 provided in the embodiment of the present disclosure. A locking rod 52 is slidably connected to the locking cap 5. The locking rod 52 is L-shaped and slides in the radial direction of the locking cap 5. A locking groove 225 for the end of the locking rod 52 to be inserted is provided at one end of the inner rod 22 connected to the locking cap 5. A through groove 53 for the end of the locking rod 52 to slide is provided on the locking cap 5. A locking spring 53 is connected to the end of the locking rod 52 located in the through groove 53, and the end of the locking spring 531 away from the locking rod 62 is connected to the wall of the through groove 53. The locking spring 531 is used to pull the locking rod 52 to drive the end of the locking rod 52 to be inserted into the locking groove 225.

[0051] In this embodiment, the locking rod 52 slides in the radial direction of the locking cap 5. There is a pair of locking rods 52, which are symmetrically arranged along the axis of the locking cap 5. The upper end of the locking rod 52 extends out of the top wall of the locking cap 5, and the lower end of the locking rod 52 is flush with the bottom wall of the locking cap 5. The lower end of the locking rod 52 is inserted into the locking groove 225 to connect the locking cap 5 and the inner rod 22. The through groove 53 passes through the locking cap 5 in the vertical direction. One end of the locking rod 52 located in the through groove 53 extends out of the through groove 53 and is located outside the locking cap 5, so that the locking rods 52 can be manually moved away from each other, thereby compressing the locking spring 531, so that the locking rod 52 is disengaged from the locking groove 225, releasing the connection between the locking cap 5 and the inner rod 22, so that the locking cap 5 can be disassembled.

[0052] In some embodiments, a latching rod 43 is slidably mounted on the adjusting cap 4. The latching rod 43 is L-shaped and slides radially along the adjusting cap 4. A latching slot 214 is defined on the peripheral wall of the outer rod 21, into which the end of the latching rod 43 engages. A latching spring 44 is connected to the end of the latching rod 43 facing away from the outer rod 21. The end of the latching spring 44, facing away from the latching rod 43, is connected to the adjusting cap 4. The latching spring 44 is used to force the latching rod 43 into the latching slot 214.

[0053] In this embodiment, the clamping rods 43 slide along the radial direction of the adjusting cap 4 . There is a pair of clamping rods 43 , which are symmetrically arranged along the axis of the adjusting cap 4 .

[0054] For example, the lower end of the locking rod 52 is connected to a lever 54. A first adjustment slot 45 is defined within the adjustment cap 4, allowing the lever 54 to rotate clockwise along with the locking cap 5. A second adjustment slot 46 is defined within the adjustment cap 4, allowing the lever 54 to slide. The second adjustment slot 46 is connected to the first adjustment slot 45. The locking cap 5 drives the inner rod 22 to slide past the abutment rod 61 and continue to rotate clockwise. The lever 54 rotates from the first adjustment slot 45 into the second adjustment slot 46, where it abuts against the side of the engaging rod 43 facing away from the engaging spring 44.

[0055] In this embodiment, the locking rod 52 and the detent rod 54 are closer to the axis of the adjusting cap 4 in the radial direction than the engaging rod 43. One end of the engaging spring 44 is connected to the engaging rod 43, and the other end is connected to the wall of the engaging groove 214. The first adjusting groove 45 is an arcuate groove that extends through the bottom wall of the locking cap 5, allowing the detent rod 54 to extend into the first adjusting groove 45 and rotate within the first adjusting groove 45 as the locking cap 5 rotates. The sliding movement of the detent rod 54 within the first adjusting groove 45 facilitates the rotation of the inner rod 22 by the locking cap 5. When the shift rod 54 is located in the second adjustment groove 46, the avoidance groove 224 is offset from the abutting rod 61, and at this time the protruding portion of the inner rod 22 is located above the abutting rod 61, so that by pulling the locking rod 52, the shift rod 54 is driven to abut the clamping rod 43 to compress the clamping spring 44, so that the locking rod 52 is disengaged from the locking groove 225 and the clamping rod 43 is disengaged from the clamping groove 214, thereby realizing that the locking rod 52 is disengaged from the inner stem and the clamping rod 43 is disengaged from the outer rod 21.

[0056] It should be noted that the locking rod 62 and the clamping rod 43 are both located within the rotation range of the connecting block 51 .

[0057] In some embodiments, a slot 215 is defined on the inner wall of the outer rod 21. A positioning spring 216 is disposed within the slot 215. A positioning block 217 is connected to the end of the positioning spring 216, distal from the slot 215. A plurality of positioning slots 226 are defined on the circumferential wall of the inner rod 22 for insertion of the positioning blocks 217. The ends of the positioning blocks 217 that slide into the positioning slots 226 are curved.

[0058] In this embodiment, the positioning blocks 217 are provided in a pair and are symmetrically arranged along the axis of the inner rod 22. The rotational distance of the connecting block 51 driven by the locking cap 5 to rotate out of the connecting slot 42, the rotational distance of the inner rod 22 driven by the locking cap 5 to rotate the avoidance slot 224 to align with the abutment rod 61, and the rotational distance of the locking cap 5 to drive the locking rod 52 from the first adjustment slot 45 to the second adjustment slot 46 are all the same as the spacing between two adjacent positioning slots 226.

[0059] For example, eight positioning grooves 226 are evenly spaced along the circumferential direction of the inner rod 22, and the number and positions of the avoidance grooves 224 correspond one-to-one with the positioning grooves 226 in the vertical direction. This allows the positioning block 217 to rotate to the next positioning groove 226 in the radial direction of the inner rod 22 after the locking cap 5 drives the connecting block 51 to rotate out of the connecting groove 42; allows the positioning block 217 to continue to rotate to the next positioning groove 226 in the radial direction of the inner rod 22 when the locking cap 5 drives the inner rod 22 to rotate so that the avoidance groove 224 corresponds to the abutment rod 61; and allows the positioning block 217 to continue to rotate to the next positioning groove 226 in the radial direction of the inner rod 22 when the locking cap 5 drives the deflector rod 54 to rotate from the first adjustment groove 45 into the second adjustment groove 46. This allows the positioning block 217 to be engaged in the positioning groove 226 in all three positions of the clockwise rotation of the locking cap 5.

[0060] Exemplarily, there are 8 positioning grooves 226 along the inner rod 22 to form a circle, and there are two circles along the length direction of the inner rod 22, which respectively correspond to the locking cap 5 driving the connecting block 51 to disengage from the connecting groove 42 and be lifted up by the ejection spring 223, and the locking cap 5 driving the inner rod 22 so that the inner rod 22 slides over the abutment rod 61 through the avoidance groove 224 and is located above the abutment rod 61.

[0061] It should be noted that the action sequence of the locking cap 5 driving the inner rod 22 is that the locking cap 5 drives the connecting block 51 to rotate out of the connecting groove 42 clockwise, the locking cap 5 and the inner rod 22 are lifted up by the ejection spring 223 together, the locking cap 5 rotates the inner rod 22 clockwise to align the avoidance groove 224 with the abutment rod 61, the locking cap 5 and the inner rod 22 slide up together so that the abutment rod 61 slides through the avoidance groove 224, the locking cap 5 and the inner rod 22 continue to rotate clockwise to drive the avoidance groove 224 to stagger the abutment rod 61, so that the bottom wall of the inner rod 22 abuts against the abutment rod 61.

[0062] Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An adaptive locking valve structure, comprising a valve body, a valve stem disposed within the valve body, and a valve core, wherein the valve stem is threadedly connected to the valve body, the valve core is rotatably connected to the valve stem, a valve cavity is defined within the valve body for movement of the valve core, a liquid inlet and a liquid outlet communicating with the valve cavity are defined on the valve body, and the valve core is configured to operate within the valve cavity as the valve stem rotates to open and close the liquid inlet and outlet, characterized in that: The valve stem includes an outer rod rotatably connected to the valve core and an inner rod rotated inside the outer rod, the outer rod is threadedly connected to the valve body, and the inner rod slides inside the outer rod along the length direction of the outer rod; The valve structure further includes an adjusting cap connected to the outer rod, a locking cap rotated on the adjusting cap and connected to the inner rod, a connecting block connected to the bottom wall of the locking cap, a connecting groove for the connecting block to be rotated into the top wall of the adjusting cap, and the connecting block is used to limit the locking cap from separating from the adjusting cap along the length direction of the outer rod; The outer rod is provided with an active cavity at one end close to the valve core for the inner rod end to move, and a locking piece is provided in the active cavity. The locking piece is used to lock the outer rod and the valve core. The inner rod opens the locking piece when the locking cap is separated from the adjusting cap, and closes the locking piece when the inner rod is close to the adjusting cap.

2. The adaptive locking valve structure according to claim 1, characterized in that: One end of the inner rod located in the movable cavity has a boss portion, and the peripheral wall of the boss portion is gradually expanded toward the direction close to the valve core. The locking member includes: an abutting rod, which rotates on the inner wall of the outer rod and rotates in the movable cavity to abut against the inclined side wall of the boss portion; a locking rod connected to one end of the abutting rod away from the boss portion, wherein the connection between the locking rod and the abutting rod is hinged to the outer rod; The end of the valve core close to the inner rod is provided with a plurality of locking grooves for the locking rod to rotate into.

3. The adaptive locking valve structure according to claim 2, characterized in that: The boss portion of the inner rod is rotatably connected to a rotating block toward the bottom wall of the valve core, and the rotating block is connected to an ejection spring. The outer rod is provided with a partition separating the movable cavity from the cavity for rotationally connecting the valve core, and the ejection spring is connected to the partition at one end away from the rotating block. The ejection spring is used to push the inner rod to slide toward the locking cap.

4. The adaptive locking valve structure according to claim 3, characterized in that: The boss portion is provided with an avoidance groove for the abutment rod to rotate into, and the abutment rod is longer than the locking rod. Under the action of gravity, the abutment rod overcomes the gravity of the locking rod and rotates toward the avoidance groove. When the boss portion abuts the abutment rod, the inner rod drives the boss portion to rotate clockwise to correspond the avoidance groove to the abutment rod. In the natural state of the ejection spring, the abutment rod is located in the avoidance groove, and the locking rod is located in the locking groove. The avoidance groove is used for the boss portion to slide toward the direction of the locking cap and then disengage from the abutment rod.

5. The adaptive locking valve structure according to claim 4, characterized in that: A locking rod is slidably connected to the locking cap, and the locking rod is L-shaped and slides along the radial direction of the locking cap. A locking groove for the end of the locking rod is provided at one end of the inner rod connected to the locking cap, and a through groove for the end of the locking rod to slide is provided on the locking cap, and a locking spring is connected to the end of the locking rod located in the through groove, and the end of the locking spring away from the locking rod is connected to the through groove wall, and the locking spring is used to pull the locking rod to drive the end of the locking rod to insert into the locking groove.

6. The adaptive locking valve structure according to claim 5, characterized in that: A clamping rod is slidingly provided on the adjusting cap, and the clamping rod is L-shaped and slides along the radial direction of the adjusting cap. A clamping groove for the end of the clamping rod to be clamped into is provided on the peripheral wall of the outer rod. A clamping spring is connected to the end of the clamping rod away from the outer rod, and the end of the clamping spring away from the clamping rod is connected to the adjusting cap, and the clamping spring is used to push the clamping rod into the clamping groove.

7. The adaptive locking valve structure according to claim 6, characterized in that: The lower end of the locking rod is connected to a shift rod, and a first adjustment slot is provided in the adjusting cap for the shift rod to rotate clockwise with the locking cap, and a second adjustment slot is provided in the adjusting cap for the shift rod to slide, and the second adjustment slot is connected to the first adjustment slot. The locking cap drives the inner rod to slide over the abutment rod and then continues to rotate clockwise, and the shift rod rotates from the first adjustment slot into the second adjustment slot, and abuts against the side of the clamping rod facing away from the clamping spring.

8. The adaptive locking valve structure according to claim 6, characterized in that: One end of the locking rod located in the through slot extends out of the through slot and is located outside the locking cap.

9. The adaptive locking valve structure according to claim 7, characterized in that: A sliding groove is provided on the inner wall of the outer rod, a positioning spring is provided in the sliding groove, and a positioning block is connected to the end of the positioning spring away from the sliding groove wall. A plurality of positioning grooves for inserting the positioning block are provided on the peripheral wall of the inner rod, and the end of the positioning block sliding into the positioning groove is arc-shaped.

10. The adaptive locking valve structure according to claim 9, characterized in that: The rotational path distance that the locking cap drives the connecting block to rotate out of the connecting groove, the rotational path distance that the locking cap drives the inner rod to rotate the avoidance groove to correspond to the abutment rod, and the rotational path that the locking cap drives the shift rod to rotate from the first adjustment groove to the second adjustment groove are all the same as the spacing between two adjacent positioning grooves.

Images