Valve head and assembling method

Abstract

The invention relates to the technical field of valves, in particular to a valve head and an assembling method.The valve head comprises a valve element, a connecting sleeve and a valve shaft, a protection base is arranged on the valve element, a connecting assembly is arranged on the connecting sleeve, the connecting assembly comprises a rotating part, and after the protection base is aligned with the connecting sleeve, the rotating part is rotated, so that the valve element can rotate; the connecting sleeve can be fixedly connected with the protection seat; the valve shaft is connected with the connecting sleeve through a locking assembly, the locking assembly comprises an alignment structure and an inserting piece, the alignment structure can drive the valve shaft to be connected with the connecting sleeve, and after the valve shaft is connected with the connecting sleeve, under the cooperation of the inserting piece, the valve shaft can be stably connected with the connecting sleeve; through cooperation of the connecting assembly and the locking assembly, stable connection among the valve element, the connecting sleeve and the valve shaft can be achieved, and use safety is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a valve head and an assembly method. Background Art

[0002] The valve head, as the core component of the valve, has the main function of controlling the medium in the pipeline by opening or closing the valve. This includes controlling the flow of the medium, regulating the pressure, and protecting the equipment and pipelines from damage or harm caused by emergencies such as overload and natural disasters. The valve head is usually composed of multiple components, among which the valve body is the main part of the valve, which plays the role of limiting and controlling the flow of the medium. In addition to the valve body, the valve head may also include components such as the valve cover, valve seat, valve core, connectors, and sealing rings. These components work together to ensure the normal operation of the valve. The working principle of the valve head is mainly based on its internal structure and the flow characteristics of the medium. When the flow or pressure of the medium needs to be controlled, the valve stem can be operated to drive the valve core to move in the valve seat, thereby changing the degree of opening of the valve. The greater the degree of opening of the valve, the greater the flow of the medium; conversely, the smaller the degree of opening of the valve, the smaller the flow of the medium. By adjusting the degree of opening of the valve, precise control of the flow of the medium can be achieved.

[0003] At present, conventional valve core connection methods include mechanical connection, welding, bonding and interference fit connection. Among them, the mechanical connection method mostly uses bolts for fixing, and in the connection operation, in order to ensure the stability of the connection, multiple sets of bolts are usually required. In the traditional connection operation, the bolts need to be tightened one by one, and before the bolts are tightened, in order to ensure the subsequent connection state, the bolt holes need to be aligned first. The whole process is time-consuming and laborious. Summary of the invention

[0004] The object of the present invention is to provide a valve head and an assembly method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A valve head, comprising: a valve core, a connecting sleeve and a valve shaft, wherein a protection seat is arranged on the valve core, a connecting assembly is arranged on the connecting sleeve, and the connecting assembly comprises a rotating member, and when the protection seat is aligned with the connecting sleeve, the connecting sleeve is rotated to fix the connecting sleeve with the protection seat; The valve shaft and the connecting sleeve are connected via a locking assembly, which includes an alignment structure and a plug-in connector. The alignment structure can drive the valve shaft to connect with the connecting sleeve, and after the valve shaft and the connecting sleeve are connected, the valve shaft can be stably connected to the connecting sleeve with the cooperation of the plug-in connector.

[0006] The valve head as described above: the connecting assembly also includes an alignment structure and a locking structure, the alignment structure includes a docking block fixedly arranged on the inner wall of the connecting sleeve, the docking blocks are arranged in at least one group equidistantly along the circumferential direction of the connecting sleeve, and the docking blocks are adapted to the adapting grooves provided on the valve core.

[0007] The valve head as described above: the locking structure includes a rotating rod rotatably mounted on the connecting sleeve, and a plurality of rotating rods are equidistantly arranged along the circumferential direction of the connecting sleeve, each group of rotating rods is slidably provided with a bolt, and a gear is fixedly provided at one end of each group of rotating rods away from the bolt.

[0008] As for the valve head as described above: the rotating member comprises a rotating ring sleeved on the connecting sleeve, a gear ring is fixedly provided on the inner wall of the rotating ring, and the gear ring is meshed with the gear.

[0009] The valve head as described above: the alignment structure includes a protrusion, which is formed on the inner wall of the connecting sleeve, and the protrusion cooperates with the engaging groove body provided on the valve shaft, so that the through groove on the valve shaft and the insertion groove on the connecting sleeve can be concentrically aligned.

[0010] The valve head as described above: the engaging groove body comprises a vertical groove opened on the valve shaft, the vertical groove is connected to a section of a spiral groove, and the end of the spiral groove away from the vertical groove is connected to an annular groove.

[0011] The valve head as described above: the connector includes a connecting pin, a placement slot is provided in the connecting pin, a trigger rod is slidably provided in the placement slot, a spring is sleeved on the trigger rod, one end of the spring abuts against the bottom of the placement slot, and the other end abuts against a baffle fixedly provided on the trigger rod, and the end of the trigger rod immersed in the placement slot is connected to a deflection member provided in the placement slot.

[0012] As described above, the valve head: the deflection member includes two groups of wedge blocks symmetrically arranged in the placement groove, and the two groups of wedge blocks are provided with oblique grooves, and sliding rods are slidably arranged in the oblique grooves, and the two groups of sliding rods are fixedly connected by connecting rods, and the connecting rods are fixed to the trigger rods. A locking cavity is provided on the inner side of the insertion groove, and the wedge blocks can be opened and clamped in the locking cavity after passing through the through grooves.

[0013] A valve head assembly method is also proposed, the valve head as described above comprises the following steps: Step 1: Hold the valve core, plug the connecting sleeve into the valve core, and then rotate it. With the cooperation of the docking block and the adapter groove, the threaded hole on the connecting sleeve is aligned with the threaded hole on the protective seat; Step 2: Rotate the rotating ring. With the cooperation of the gear ring and the gear, multiple groups of rotating rods move simultaneously, which can drive the bolts to fix the protection seat and the connecting sleeve; Step 3: Insert the valve shaft, and with the cooperation between the protrusion and the engaging groove body, align the through groove and the inserting groove concentrically, and then insert the connecting pin into the inserting groove; Step 4: During the insertion process, the wedge block can open in the locking cavity, thereby fixing the valve shaft and the connecting sleeve.

[0014] Compared with the prior art, the present invention has the following beneficial effects: By setting up the connection assembly and utilizing the cooperation between the docking block and the adapter groove in the alignment structure, the threaded hole on the connection sleeve can be quickly aligned with the threaded hole on the protection seat, thereby facilitating the subsequent locking structure to fix the connection between the connection sleeve and the protection seat; The locking structure includes multiple groups of rotating rods that can rotate synchronously. Under the trend of the rotating ring, the multiple groups of rotating rods can drive multiple groups of bolts to be screwed in, so as to fix the protection seat and the connecting sleeve. Compared with the traditional method of screwing in the bolts one by one, the operation is simple and convenient, and the operation speed is relatively fast; At the same time, by setting a locking assembly and utilizing the cooperation between the protrusion in the alignment structure and the engaging groove body, the through groove on the valve shaft and the insertion groove on the connecting sleeve can be quickly driven to maintain complete concentric alignment, thereby providing favorable conditions for the subsequent insertion of the connecting pin, and when the connecting pin is inserted, the connection state between the valve shaft and the connecting sleeve can be locked by utilizing the cooperation between the deflection member in the connecting pin, the trigger rod and the spring, thereby ensuring that the connecting pin will not separate from the connecting sleeve during use, thereby improving the connection stability between the valve shaft and the connecting sleeve and ensuring safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the valve head.

[0016] Figure 2 Schematic diagram of the valve head cross section.

[0017] Figure 3 It is a schematic diagram of the structure of the protrusion inside the connecting sleeve in the valve head.

[0018] Figure 4 It is a schematic diagram of the structure of the locking cavity in the connecting sleeve in the valve head.

[0019] Figure 5 It is a schematic diagram of the structure of the embedded groove body in the valve head.

[0020] Figure 6 It is a schematic diagram of the structure of the embedded groove body in the valve head.

[0021] Figure 7 It is a schematic diagram of the structure of the connecting components in the valve head.

[0022] Figure 8 Schematic diagram of the structure inside the connecting pin in the valve head.

[0023] Fig. 9 It is a schematic diagram of the structure of the deflection member in the valve head.

[0024] In the figure: 1. valve core; 2. protection seat; 3. connecting sleeve; 301. docking block; 302. protrusion; 303. insertion groove; 4. rotating ring; 5. valve shaft; 501. through groove; 502. vertical groove; 503. spiral groove; 504. fool-proof mouth; 505. annular groove; 6. connecting pin; 601. placement groove; 7. rotating rod; 701. slider; 8. locking chamber; 9. bolt; 10. gear ring; 11. gear; 12. wedge block; 1201. inclined groove; 13. trigger rod; 1301. baffle; 14. spring; 15. pull tab; 16. connecting rod; 1601. slide rod. DETAILED DESCRIPTION

[0025] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0026] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0027] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0028] See also Figure 1-Figure 9 In an embodiment of the present invention, a valve head includes: A valve core 1, a connecting sleeve 3 and a valve shaft 5, wherein the valve core 1 is provided with a protection seat 2, the connecting sleeve 3 is provided with a connecting assembly, and the connecting assembly includes a rotating member. When the protection seat 2 is aligned with the connecting sleeve 3, the rotating member is rotated to enable the connecting sleeve 3 to be fixedly connected with the protection seat 2; Preferably, the valve core 1 and the protective seat 2 are connected by heat-insertion interference fit, which has a simple structure, and the interference fit connection can provide good centering performance for the connection between the valve core 1 and the protective seat 2, ensuring that the valve core 1 remains stable during use.

[0029] The connection assembly further includes an alignment structure and a locking structure, wherein the alignment structure includes a docking block 301 fixedly arranged on the inner wall of the connection sleeve 3, wherein at least one group of the docking blocks 301 is equidistantly arranged along the circumferential direction of the connection sleeve 3, and the docking blocks 301 are adapted to the adapting grooves provided on the valve core 1; For details, please refer to Figure 2 , Figure 3 The docking block 301 is arranged in a "right-angled trapezoidal structure". When the protection seat 2 and the connecting sleeve 3 are actually connected, the connecting sleeve 3 will be inserted into the protection seat 2 first. At this time, the connecting sleeve 3 and the protection seat 2 are coaxial, and the docking block 301 is placed on the valve core 1. Then, the connecting sleeve 3 is rotated, and the docking block 301 can perform a circular motion with the axis of the valve core 1. During the movement, the docking block 301 can be combined with the adapter groove, and then the lower end face of the connecting sleeve 3 is fitted with the upper end face of the valve core 1. At this time, the threaded hole opened on the connecting sleeve 3 is just aligned with the threaded hole opened on the protection seat 2, thereby facilitating the subsequent fixed connection of the protection seat 2 and the connecting sleeve 3 using the locking structure.

[0030] The locking structure comprises a rotating rod 7 rotatably mounted on the connecting sleeve 3, wherein a plurality of rotating rods 7 are equidistantly arranged along the circumferential direction of the connecting sleeve 3, a bolt 9 is slidably arranged on each group of the rotating rods 7, and a gear 11 is fixedly arranged at one end of each group of the rotating rods 7 away from the bolt 9; For details, please refer to Figure 7 The number of groups of the rotating rods 7 is an even number, so that during the docking process between the protection seat 2 and the connecting sleeve 3, whether the connecting sleeve 3 is rotated clockwise or counterclockwise, the threaded holes on the protection seat 2 and the connecting sleeve 3 can be fully aligned; A slider 701 is provided at one end of the rotating rod 7 inserted into the bolt 9 . Under the restriction of the slider 701 , the bolt 9 can only slide relative to the rotating rod 7 .

[0031] The rotating member comprises a rotating ring 4 sleeved on the connecting sleeve 3, a gear ring 10 is fixedly provided on the inner wall of the rotating ring 4, and the gear ring 10 is meshed with the gear 11; In the initial state, the bolt 9 is close to the gear 11. At this time, the bolt 9 is immersed in the connecting sleeve 3. When the connecting sleeve 3 is aligned and connected with the protection seat 2, the rotating ring 4 is continuously rotated in the same direction. During the rotation, the gear ring 10 and the gear 11 enter into a meshing transmission state, which can drive multiple sets of gears 11 to rotate synchronously. At the same time, the rotating rod 7 that rotates synchronously with the gear 11 can drive the bolt 9 to rotate synchronously with the gear 11. Then the bolt 9 can be screwed toward the protection seat 2 until the rotating rod 7 cannot be easily rotated. The bolt 9 fixes the protection seat 2 and the connecting sleeve 3. Compared with the conventional method of tightening the bolts 9 one by one, the present invention can complete the tightening operation of multiple groups of bolts 9 at one time, and the operation is simple and convenient, and the operation speed is relatively fast; In particular, a spring washer (not shown in the figure) is provided at the bottom of the threaded hole of the protective seat 2. When connected, the friction between the threaded hole and the bolt 9 is increased by the reaction force of the spring washer itself, thereby playing an anti-loosening role.

[0032] For further information, see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Fig. 9 The valve shaft 5 is connected to the connecting sleeve 3 via a locking assembly, and the locking assembly includes an alignment structure and a plug connector. The alignment structure can drive the valve shaft 5 to connect with the connecting sleeve 3, and after the valve shaft 5 is connected to the connecting sleeve 3, the valve shaft 5 can be stably connected to the connecting sleeve 3 with the cooperation of the plug connector; The alignment structure includes a protrusion 302, which is formed on the inner wall of the connecting sleeve 3, and the protrusion 302 cooperates with the fitting groove body provided on the valve shaft 5, so that the through groove 501 on the valve shaft 5 and the insertion groove 303 on the connecting sleeve 3 are coaxial; The embedded groove body includes a vertical groove 502 formed on the valve shaft 5, a spiral groove 503 is connected to the vertical groove 502, and an annular groove 505 is connected to one end of the spiral groove 503 away from the vertical groove 502; For details, please refer to Figure 5 , Figure 6 The end of the vertical groove 502 away from the spiral groove 503 is provided with an anti-foolproof mouth 504, and the anti-foolproof mouth 504 helps the protrusion 302 to dock with the vertical groove 502. When the valve shaft 5 is actually connected to the connecting sleeve 3, the valve shaft 5 is first inserted into the plug-in interface of the connecting sleeve 3. At this time, the lower bottom surface of the valve shaft 5 abuts against the protrusion 302. Subsequently, the valve shaft 5 is rotated and pressed down. Under the guidance of the anti-foolproof mouth 504, the protrusion 302 will engage with the vertical groove 502, and under the action of the downward pressure, the valve shaft 5 can be lowered along the axial direction of the connecting sleeve 3. In this process, the protrusion 302 slides along the vertical groove 502 until the protrusion 302 is engaged with the spiral groove 503, and the valve shaft 5 is continued to be pressed down (at this time, the position of the connecting sleeve 3 is fixed). Under the cooperation of the protrusion 302 and the spiral groove 503, the valve shaft 5 rotates clockwise (combined with Figure 5) is screwed in toward the valve core 1, and when the valve shaft 5 can no longer be pressed down, the bottom of the valve shaft 5 fits against the valve core 1, and the protrusion 302 is combined with the annular groove 505. Then, the valve shaft 5 is rotated clockwise until it can no longer be rotated, and the protrusion 302 moves to the end of the stroke of the annular groove 505 away from one end of the spiral groove 503. At this time, the through groove 501 on the valve shaft 5 and the insertion groove 303 on the connecting sleeve 3 are kept concentrically aligned, which provides convenience for the subsequent use of the plug-in connector to fix the valve shaft 5 and the connecting sleeve 3.

[0033] The plug-in component includes a connecting pin 6, a placement slot 601 is provided in the connecting pin 6, a trigger rod 13 is slidably provided in the placement slot 601, a spring 14 is sleeved on the trigger rod 13, one end of the spring 14 abuts against the bottom of the placement slot 601, and the other end abuts against a blocking piece 1301 fixedly provided on the trigger rod 13, and the end of the trigger rod 13 immersed in the placement slot 601 is connected to a deflection member provided in the placement slot 601; For details, please refer to Figure 8 , Fig. 9 A pull tab 15 is fixedly provided on one end of the trigger rod 13 protruding from the connecting pin 6. The pull tab 15 can facilitate the assembler to pull the trigger rod 13 when the valve shaft 5 needs to be removed or replaced later.

[0034] The deflection member includes two groups of wedge blocks 12 symmetrically arranged in the placement groove 601, and the two groups of wedge blocks 12 are both provided with an inclined groove 1201, and a sliding rod 1601 is slidably arranged in the inclined groove 1201, and the two groups of sliding rods 1601 are fixedly connected by a connecting rod 16, and the connecting rod 16 is fixed to the trigger rod 13; In conjunction with the above, please refer to Figure 4 , Figure 8 , Fig. 9 The wedge block 12 is arranged in a "right triangle" structure, and a locking cavity 8 cooperating with the wedge block 12 is arranged in the connecting sleeve 3. In particular, the spring 14 is always in a compressed state. The spring 14 in the compressed state can push the blocking piece 1301 to move toward the deflection member, so that the pull tab 15 is in contact with the connecting pin 6. At this time, the wedge block 12 is in an expanded state (protruding from the connecting pin 6, such as Figure 8 As shown), the slide bar 1601 is located at the end of the travel of the inclined slot 1201 close to one end of the rotation axis of the wedge block 12; After the through slot 501 is aligned concentrically with the insertion slot 303, the connecting pin 6 is inserted into the insertion slot 303. During the insertion process, the hypotenuse of the wedge block 12 will first contact the connecting sleeve 3. As the connecting pin 6 continues to advance, the squeezing of the wedge block 12 by the connecting sleeve 3 can force the wedge block 12 to deflect toward the inside of the placement slot 601. During the deflection process, the contact squeezing of the groove wall of the inclined slot 1201 on the slide bar 1601 can force the slide bar 1601 to drive the trigger rod 13 to move in the direction away from the wedge block 12. During the movement, the blocking piece 1301 can further squeeze the spring 14 to make its elastic potential energy greater. Until the wedge block 12 is completely immersed in the placement slot 601, the slide bar 1601 moves along the inclined slot 1201 to the end away from the axis of the wedge block 12, and the elastic potential energy stored in the spring 14 is maximized. The connecting pin 6 is then pushed further, and when the end of the connecting pin 6 is about to approach the bottom of the insertion groove 303, the wedge block 12 comes to the position of the locking chamber 8, and the restraint of the connecting sleeve 3 is lost at this time. The spring 14 releases its elastic potential energy, and can push the blocking piece 1301 and the trigger rod 13 to move toward the wedge block 12. During the movement, the sliding bar 1601 moves along the inclined groove 1201 and gradually approaches the rotation center of the wedge block 12. During this process, the wedge block 12 expands outward until the connecting pin 6 is inserted into the bottom of the insertion groove 303, and the wedge block 12 is fully expanded and abuts against the cavity wall of the locking chamber 8. At this time, pulling the connecting pin 6 outward will not separate the connecting pin 6 from the connecting sleeve 3, thereby ensuring that the connecting pin 6 will not separate from the connecting sleeve 3 during use, improving the connection stability between the valve shaft 5 and the connecting sleeve 3, and ensuring the safety of use; When the subsequent valve shaft 5 or the protective seat 2 is damaged and needs to be replaced, first hold the connecting pin 6, and then use the pull tab 15 to pull the trigger rod 13 outward, causing the wedge block 12 to deflect and retract into the placement groove 601, and then pull the connecting pin 6 outward to release the connection locking state between the valve shaft 5 and the connecting sleeve 3. After the connecting pin 6 is completely separated from the connecting sleeve 3, the valve shaft 5 is rotated upward, and the protrusion 302 slides along the annular groove 505 and the spiral groove 503 until the protrusion 302 is combined with the vertical groove 502. Then, the valve shaft 5 is pulled upward to separate the valve shaft 5 from the connecting sleeve 3. Compared with the threaded connection method, it is relatively time-saving and labor-saving.

[0035] A valve head assembly method is also proposed, the valve head as described above comprises the following steps: Step 1: Hold the valve core 1, plug the connecting sleeve 3 into the valve core 1, and then rotate it. With the cooperation of the docking block 301 and the adapter groove, the threaded hole on the connecting sleeve 3 is aligned with the threaded hole on the protection seat 2; Step 2: Rotate the rotating ring 4. With the cooperation of the gear ring 10 and the gear 11, multiple groups of rotating rods 7 move simultaneously, which can drive the bolts 9 to fix the protection seat 2 and the connecting sleeve 3. Step 3: Insert the valve shaft 5. Under the cooperation between the protrusion 302 and the fitting groove body, the through groove 501 is coaxial with the insertion groove 303, and then the connecting pin 6 is inserted into the insertion groove 303; Step 4: During the insertion process, the wedge block 12 can open in the locking cavity 8, thereby fixing the valve shaft 5 and the connecting sleeve 3.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates. In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A valve head, characterized in that: include: A valve core (1), a connecting sleeve (3) and a valve shaft (5), wherein the valve core (1) is provided with a protection seat (2), the connecting sleeve (3) is provided with a connecting assembly, the connecting assembly comprising a rotating member, and when the protection seat (2) is aligned with the connecting sleeve (3), the rotating member is rotated so that the connecting sleeve (3) and the protection seat (2) are fixedly connected; The valve shaft (5) and the connecting sleeve (3) are connected via a locking assembly, wherein the locking assembly comprises an alignment structure and a plug-in connector, wherein the alignment structure can drive the valve shaft (5) to connect with the connecting sleeve (3), and after the valve shaft (5) and the connecting sleeve (3) are connected, the valve shaft (5) can be stably connected with the connecting sleeve (3) with the cooperation of the plug-in connector.

2. A valve head according to claim 1, characterized in that: The connection assembly further comprises an alignment structure and a locking structure, wherein the alignment structure comprises a docking block (301) fixedly arranged on the inner wall of the connection sleeve (3), wherein at least one group of the docking blocks (301) are arranged equidistantly along the circumferential direction of the connection sleeve (3), and the docking blocks (301) are adapted to the adapting grooves provided on the valve core (1).

3. A valve head according to claim 2, characterized in that: The locking structure comprises a rotating rod (7) rotatably mounted on the connecting sleeve (3), wherein a plurality of groups of the rotating rods (7) are equidistantly arranged along the circumferential direction of the connecting sleeve (3), a bolt (9) is slidably arranged on each group of the rotating rods (7), and a gear (11) is fixedly arranged on one end of each group of the rotating rods (7) away from the bolt (9).

4. A valve head according to claim 3, characterized in that: The rotating member comprises a rotating ring (4) sleeved on the connecting sleeve (3), a gear ring (10) being fixedly provided on the inner wall of the rotating ring (4), and the gear ring (10) meshes with the gear (11).

5. A valve head according to claim 4, characterized in that: The alignment structure comprises a protrusion (302), the protrusion (302) being formed on the inner wall of the connecting sleeve (3), and the protrusion (302) cooperating with a fitting groove body provided on the valve shaft (5), so as to enable the through groove (501) on the valve shaft (5) to be concentrically aligned with the insertion groove (303) on the connecting sleeve (3).

6. A valve head according to claim 5, characterized in that: The embedded groove body comprises a vertical groove (502) formed on the valve shaft (5), a section of a spiral groove (503) being connected to the vertical groove (502), and an annular groove (505) being connected to one end of the spiral groove (503) away from the vertical groove (502).

7. A valve head according to claim 5, characterized in that: The connector comprises a connecting pin (6), a placement slot (601) is provided in the connecting pin (6), a trigger rod (13) is slidably provided in the placement slot (601), a spring (14) is sleeved on the trigger rod (13), one end of the spring (14) abuts against the bottom of the placement slot (601), and the other end abuts against a blocking piece (1301) fixedly provided on the trigger rod (13), and the end of the trigger rod (13) immersed in the placement slot (601) is connected to a deflection member provided in the placement slot (601).

8. A valve head according to claim 7, characterized in that: The deflection member comprises two groups of wedge blocks (12) symmetrically arranged in the placement groove (601), and the two groups of wedge blocks (12) are both provided with an inclined groove (1201), and a sliding rod (1601) is slidably arranged in the inclined groove (1201), and the two groups of sliding rods (1601) are fixedly connected by a connecting rod (16), and the connecting rod (16) is fixed to the trigger rod (13). A locking cavity (8) is provided on the inner side of the insertion groove (303), and the wedge block (12) can be opened in the locking cavity (8) and clamped in the locking cavity (8) after passing through the through groove (501).

9. A valve head assembly method, using a valve head as described in claim 8, characterized in that: The steps include: Step 1: Hold the valve core (1) and plug the connecting sleeve (3) into the valve core (1), then rotate it so that the threaded hole on the connecting sleeve (3) is aligned with the threaded hole on the protective seat (2) under the cooperation of the docking block (301) and the adapter groove; Step 2: rotating the rotating ring (4), and with the cooperation of the gear ring (10) and the gear (11), the plurality of rotating rods (7) move simultaneously, and can drive the bolts (9) to fix the protective seat (2) and the connecting sleeve (3); Step 3: Insert the valve shaft (5), and with the cooperation of the protrusion (302) and the engaging groove body, align the through groove (501) and the insertion groove (303) concentrically, and then insert the connecting pin (6) into the insertion groove (303); Step 4: During the insertion process, the wedge block (12) can be opened in the locking chamber (8), thereby fixing the valve shaft (5) and the connecting sleeve (3).

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