Valve joint and pressure reducing valve

Abstract

The utility model discloses a valve connector which comprises a base portion, a clamping ball and an outer sleeve piece. The base part is provided with a connecting cylinder, and a plurality of movable through holes are formed in the cylinder wall of the connecting cylinder. The clamping beads are movably arranged in the movable through holes in a one-to-one correspondence mode. The outer sleeve piece is movably connected to the periphery of the connecting cylinder in a sleeving mode and used for being matched with the clamping beads so that the clamping beads can protrude into the connecting cylinder and can movably give way. A plurality of pushing blocks and a plurality of limiting blocks are arranged on the inner side of the outer sleeve part, the pushing blocks and the limiting blocks are arranged at intervals in a staggered mode in the circumferential direction of the connecting cylinder, a guiding pushing face is arranged on one side of each pushing block, a limiting face is arranged on the other side of each pushing block, and a pre-installation cavity and a limiting cavity are formed between the outer sleeve part and the connecting cylinder; the pre-mounting cavity is arranged between the guide pushing surface and the adjacent limiting block, and the limiting cavity is arranged between the limiting surface and the adjacent limiting block. The utility model further discloses the pressure reducing valve with the valve connector. According to the structure, the clamping bead is convenient to assemble, and the mounting position is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas valve field, especially a valve joint and pressure reducing valve. BACKGROUND

[0002] Some existing pressure reducing valves are provided with valve joints for connecting with gas sources (such as gas cylinders). The valve joint includes a base part, a clamping bead, and an outer sleeve. The base part is provided with a connecting cylinder, the cylinder wall of the connecting cylinder is provided with a plurality of movable through holes, the clamping bead is provided with a plurality of movable through holes and is correspondingly arranged in each movable through hole, and the outer sleeve is provided with a sleeve hole and is movably sleeved on the outer periphery of the connecting cylinder. The outer sleeve is used in cooperation with the clamping bead to enable the clamping bead to protrude into the connecting cylinder and to be movably accommodated. When connecting the gas source, the outer sleeve is in a position to accommodate the clamping bead, so that the clamping bead can move freely. At this time, the connecting cylinder and the corresponding structure of the gas source can be butt jointed, and then the outer sleeve is adjusted to make the clamping bead protrude into the connecting cylinder. The clamping bead can be clamped on the corresponding structure of the gas source, thereby completing the connection with the gas source. When assembling the foregoing valve joint, the clamping bead needs to be pressed into the outer sleeve and the connecting cylinder to enable the clamping bead to be installed into the movable through hole. This assembly structure is troublesome to assemble on the one hand, and on the other hand, it can also expand the gap between the outer sleeve and the connecting cylinder, form a support opening deformation, and cause the clamping bead to have a risk of falling out. SUMMARY

[0003] The utility model aims at solving at least one of the technical problems existing in the prior art. To this end, the utility model provides a valve joint, which is convenient to assemble and stable in installation position.

[0004] The utility model further provides a pressure reducing valve with the valve joint.

[0005] According to the valve joint of the first aspect of the utility model, it comprises: base part, it is provided with connecting cylinder, the cylinder wall of connecting cylinder is provided with a plurality of movable through -hole;Clamping bead, it is provided with a plurality of and one-to-one correspondence is movably arranged in each movable through -hole;Outer sleeve, it is provided with sleeve joint hole and is movably connected to the outer periphery of connecting cylinder, the outer sleeve is used to cooperate with the clamping bead so that the clamping bead can protrude into the connecting cylinder and can be movably accommodated;Wherein, the inner side of the outer sleeve is provided with a plurality of push blocks and a plurality of limit blocks, the push block and the limit block are staggered and spaced along the circumference of the connecting cylinder, one side of the push block is provided with a guide push surface, and the other side is provided with a limit surface, a pre-installation cavity and a limit cavity are formed between the outer sleeve and the connecting cylinder, the pre-installation cavity and the limit cavity are one-to-one corresponding to the clamping bead, the pre-installation cavity is arranged between the guide push surface and the adjacent limit block, and the limit cavity is arranged between the limit surface and the adjacent limit block;The outer sleeve can rotate around the connecting cylinder, the outer sleeve can be rotated to a pre-installation position, in the pre-installation position, the pre-installation cavity can be communicated with the movable through -hole, the clamping bead can enter the position matched with the movable through -hole through the pre-installation cavity, and when the outer sleeve is rotated from the pre-installation position, the clamping bead can be pushed into the movable through -hole through the guide push surface, and after the guide push surface passes the clamping bead, the clamping bead enters the limit cavity.

[0006] The valve joint has the following beneficial effects: when the clamping bead is installed between the outer sleeve and the connecting cylinder, the outer sleeve is first rotated to a pre-installation position, then the clamping bead is placed in the pre-installation cavity, so that the clamping bead enters the position matched with the movable through -hole, then the outer sleeve is rotated, the clamping bead is pushed into the movable through -hole through the guide push surface of the push block, the guide push surface passes the clamping bead, and finally the clamping bead is in the limit cavity, the clamping bead is limited between the push block and the limit block (and the rotation position of the outer sleeve is also limited), and the installation of the clamping bead is completed. The structure is convenient for the installation of the clamping bead. In addition, compared with the installation mode of directly pressing the clamping bead between the outer sleeve and the connecting cylinder in the prior art, the clamping bead is pushed into the movable through -hole along the circumference by the push block with the guide push surface, the deformation damage of the outer sleeve and the connecting cylinder is small, the clamping bead is not easy to fall out, and the installation position is relatively stable.

[0007] According to some embodiments of the utility model, the push block is a ratchet tooth structure, the guide push surface is a long side tooth surface of the ratchet tooth, and the limit surface is a short side tooth surface of the ratchet tooth.

[0008] According to some embodiments of the utility model, the outer sleeve is provided with a guide surface, the guide surface is arranged in the pre-installation cavity, and the guide surface is used to guide the clamping bead to the movable through -hole.

[0009] According to some embodiments of the present application, the inner wall of the outer sleeve is provided with a stepped surface structure, the outer sleeve is movable along the axial direction of the connecting cylinder, and when moving, the stepped surface structure pushes and accommodates the clamping bead.

[0010] According to some embodiments of the present application, a first elastic member is arranged between the outer sleeve and the base part, and the first elastic member is used to keep the outer sleeve in a position for ejecting the clamping bead.

[0011] According to some embodiments of the present application, the first elastic member is a spring and is sleeved on the outer periphery of the connecting cylinder, and the two ends of the first elastic member abut against the base part and the outer sleeve respectively.

[0012] According to some embodiments of the present application, the outer sleeve is provided with a first sleeve ring, the base part is provided with a second sleeve ring, the first sleeve ring is sleeved with the first elastic member, and the second sleeve ring is used to cooperate with the first sleeve ring when the connecting cylinder moves axially.

[0013] According to some embodiments of the present application, the movable through hole is a tapered hole, one end of the movable through hole close to the center of the connecting cylinder is a small end, and the diameter of the small end is smaller than the ball diameter of the clamping bead.

[0014] The pressure reducing valve according to the second aspect of the present application comprises the valve joint according to the first aspect of the present application.

[0015] The pressure reducing valve according to the present application has at least the following beneficial effects: since the valve joint according to the first aspect of the present application is adopted, the pressure reducing valve has the advantages of convenient clamping bead assembly and stable clamping bead installation.

[0016] According to some embodiments of the present application, the gas taking structure comprises a gas taking nozzle, a push rod, a second elastic member, a driving shaft and a control knob, the gas taking nozzle is arranged at the inner center position of the connecting cylinder, the gas taking nozzle is provided with a gas taking channel for inputting fuel gas into the pressure reducing valve, the push rod is movably arranged in the gas taking channel and can perform telescopic action in the gas taking channel, the push rod can open and close the gas taking channel when performing telescopic action, the second elastic member is arranged between the push rod and the gas taking nozzle and is used to drive the push rod to keep in a position for closing the gas taking channel, the driving shaft is rotatably arranged in the base part, the driving shaft is provided with a knob part, the driving shaft drives the push rod to enter a position for opening the gas taking channel through the knob part when rotating, and the control knob is connected with the driving shaft and is used to drive the driving shaft to rotate.

[0017] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0019] Figure 1 is a perspective view of a pressure reducing valve according to an embodiment of the present application;

[0020] Figure 2 is an exploded view of a valve joint portion of a pressure reducing valve according to an embodiment of the present application;

[0021] Figure 3 is a sectional view taken along the A-A direction of the structure shown in Figure 1

[0022] Figure 4 is a partial view taken along the B direction of the structure shown in Figure 1

[0023] REFERENCE NUMERALS

[0024] base portion 100, connecting cylinder 110, movable through hole 120, second collar 130;

[0025] clamping bead 200;

[0026] outer sleeve 300, pushing block 310, limiting block 320, guiding pushing surface 311, limiting surface 312, guide surface 330, stepped surface structure 340, first collar 350;

[0027] pre-installation cavity 400;

[0028] limiting cavity 500;

[0029] first elastic member 600;

[0030] gas taking structure 700, gas taking nozzle 710, push rod 720, second elastic member 730, drive shaft 740, control knob 750. DETAILED DESCRIPTION

[0031] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0032] ​​In the description of the utility model, need understanding, if relate to the direction description, for example the direction or positional relation of indication such as upper, lower, front, back, left, right is based on the direction or positional relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not the indication or the implied device or element must have the specific orientation, with specific orientation construction and operation, therefore can not be understood as the restriction of the utility model.

[0033] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number.If there is a description to the first, second is only used for distinguishing the technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0034] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0035] Refer to Figures 1 to 4The valve joint comprises a base part 100, a clamping bead 200 and an outer sleeve 300. The base part 100 is provided with a connecting cylinder 110, and the cylinder wall of the connecting cylinder 110 is provided with a plurality of movable through holes 120. The clamping bead 200 is provided in plurality and is movably arranged in each movable through hole 120 in one-to-one correspondence. The outer sleeve 300 is provided with a sleeve hole and is movably sleeved on the outer periphery of the connecting cylinder 110, and the outer sleeve 300 is used to cooperate with the clamping bead 200 to enable the clamping bead 200 to protrude into the connecting cylinder 110 and to be movably accommodated. The inner side of the outer sleeve 300 is provided with a plurality of pushing blocks 310 and a plurality of limiting blocks 320, the pushing blocks 310 and the limiting blocks 320 are staggered and arranged in intervals along the circumference of the connecting cylinder 110, one side of the pushing block 310 is provided with a guide pushing surface 311 and the other side is provided with a limiting surface 312, a pre-installation cavity 400 and a limiting cavity 500 are formed between the outer sleeve 300 and the connecting cylinder 110, the pre-installation cavity 400 and the limiting cavity 500 correspond to the clamping bead 200 in one-to-one correspondence, the pre-installation cavity 400 is arranged between the guide pushing surface 311 and the adjacent limiting block 320, and the limiting cavity 500 is arranged between the limiting surface 312 and the adjacent limiting block 320; the outer sleeve 300 can rotate around the connecting cylinder 110, the outer sleeve 300 can be rotated to a pre-installation position, in the pre-installation position, the pre-installation cavity 400 can be in communication with the movable through hole 120, the clamping bead 200 can enter the position matched with the movable through hole 120 through the pre-installation cavity 400, when the outer sleeve 300 is rotated from the pre-installation position, the clamping bead 200 can be pushed into the movable through hole 120 through the guide pushing surface 311, and after the guide pushing surface 311 passes the clamping bead 200, the clamping bead 200 enters the limiting cavity 500.

[0036] With the above structure, when the clamping bead 200 is installed between the outer sleeve 300 and the connecting cylinder 110, the outer sleeve 300 can be first rotated to the pre-installation position, then the clamping bead 200 is placed in the pre-installation cavity 400, so that the clamping bead 200 can enter the position matched with the movable through hole 120, then the outer sleeve 300 is rotated, the clamping bead 200 is pushed into the movable through hole 120 through the guide pushing surface 311 of the pushing block 310, and the guide pushing surface 311 passes the clamping bead 200, finally the clamping bead 200 is in the limiting cavity 500, and the clamping bead 200 is limited between the pushing block 310 and the limiting block 320 (at the same time, the rotation position of the outer sleeve 300 is also limited), and the installation of the clamping bead 200 is completed. With the above structure, the installation of the clamping bead 200 is convenient. In addition, compared with the installation method in the prior art which directly pushes the clamping bead 200 into the space between the outer sleeve 300 and the connecting cylinder 110 along the axial direction, since the clamping bead 200 is pushed into the movable through hole 120 along the circumference by the pushing block 310 with the guide pushing surface 311, the deformation and damage of the outer sleeve 300 and the connecting cylinder 110 is small, the clamping bead 200 is not easy to fall out, and the installation position is relatively stable.

[0037] In an embodiment, the pushing block 310 is a ratchet tooth structure, the guide pushing surface 311 is a long side tooth surface of the ratchet tooth, and the limiting surface 312 is a short side tooth surface of the ratchet tooth. With the above structure, the long side tooth surface of the ratchet tooth can be used to smoothly push the clamping bead 200 into the movable through hole 120, and the clamping bead 200 can also be smoothly passed; after the clamping bead 200 is pushed, the pushing block 310 of the ratchet tooth structure can effectively limit the clamping bead 200 and the outer sleeve 300.

[0038] In an embodiment, the outer sleeve 300 is provided with a guide surface 330, which is arranged in the pre-installation cavity 400 and is used to guide the clamping bead 200 to the movable through hole 120, thereby facilitating the smooth placement of the clamping bead 200 in the to-be-installed position. In an embodiment, when the outer sleeve 300 gives way to the clamping bead 200, the pre-installation cavity 400 is in a position in communication with the movable through hole 120, and the guide surface 330 can directly guide the clamping bead 200 to the movable through hole 120.

[0039] In an embodiment, the inner wall of the outer sleeve 300 is provided with a stepped surface structure 340, and the outer sleeve 300 is movable along the axial direction of the connecting cylinder 110 and, when moving, pushes and gives way to the clamping bead 200 through the stepped surface structure 340. With the above structure, the stepped surface structure 340 has protruding and recessed parts relative to the clamping bead 200, which can push out the clamping bead 200 through the protruding part and give way to the clamping bead 200 through the recessed part. Such a structure is simple and easy to manufacture and implement.

[0040] In an embodiment, a first elastic member 600 is arranged between the outer sleeve 300 and the base part 100, and is used to keep the outer sleeve 300 in a position for pushing out the clamping bead 200, so that the outer sleeve 300 can be stably kept in a latching position, and it is also convenient to operate the outer sleeve 300. As long as the outer sleeve 300 is released, the outer sleeve 300 can be reset to the latching position.

[0041] In an embodiment, the first elastic member 600 is a spring and is sleeved on the outer periphery of the connecting cylinder 110, and the two ends of the first elastic member 600 abut against the base part 100 and the outer sleeve 300, respectively. With the above structure, the installation of the first elastic member 600 is more stable.

[0042] In an embodiment, the outer sleeve 300 is provided with a first sleeve ring 350, and the base part 100 is provided with a second sleeve ring 130, the first sleeve ring 350 is sleeved with the first elastic member 600, and the second sleeve ring 130 is used to cooperate with the first sleeve ring 350 when the connecting cylinder 110 moves in the axial direction. With the above structure, the installation stability of the first elastic member 600 can be further improved, and the movement of the outer sleeve 300 is also more stable.

[0043] In the embodiment, the movable through hole 120 is a tapered hole, the movable through hole 120 has a small end close to the center of the connecting cylinder 110, and the diameter of the small end is smaller than the ball diameter of the clamping bead 200, so as to avoid the clamping bead 200 from being pulled outwards.

[0044] The pressure reducing valve of the second aspect embodiment of the utility model, it includes the valve joint of the utility model first aspect embodiment. Because adopt the valve joint of the utility model first aspect embodiment, the pressure reducing valve has the advantages that the clamping bead 200 is easy to assemble, and the clamping bead 200 is stable in installation.

[0045] In the embodiment, the pressure reducing valve further includes a gas taking structure 700, the gas taking structure 700 includes a gas taking nozzle 710, a push rod 720, a second elastic member 730, a driving shaft 740 and a control knob 750, the gas taking nozzle 710 is arranged at the inner center position of the connecting cylinder 110, the gas taking nozzle 710 is provided with a gas taking channel for inputting gas into the pressure reducing valve, the push rod 720 is movably arranged in the gas taking channel and can perform telescopic action in the gas taking channel, the push rod 720 can open and close the gas taking channel during telescopic action, the second elastic member 730 is arranged between the push rod 720 and the gas taking nozzle 710 and is used for driving the push rod 720 to keep at the position of closing the gas taking channel, the driving shaft 740 is rotatably arranged in the base part 100, the driving shaft 740 is provided with a knob part, the driving shaft 740 drives the push rod 720 to enter the position of opening the gas taking channel through the knob part during rotation, and the control knob 750 is connected with the driving shaft 740 and is used for driving the driving shaft 740 to rotate.

[0046] The technical features of the above embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0047] The embodiments of the utility model are described in detail above combined with the drawings, but the utility model is not limited to the above embodiments, and within the knowledge range of ordinary skilled persons in the technical field, various changes can be made without departing from the purpose of the utility model.

Claims

1. A valve connector, characterized in that, include: The base (100) is provided with a connecting cylinder (110), and the cylinder wall of the connecting cylinder (110) is provided with a plurality of movable through holes (120); Multiple locking beads (200) are provided and are movably disposed in each of the aforementioned movable through holes (120) in a corresponding manner; The outer sleeve (300) is provided with a socket and is movably sleeved on the outer periphery of the connecting cylinder (110). The outer sleeve (300) is used to cooperate with the retaining bead (200) so that the retaining bead (200) can protrude into the connecting cylinder (110) and can move to make room. The outer sleeve (300) has multiple push blocks (310) and multiple limiting blocks (320) on its inner side. The push blocks (310) and the limiting blocks (320) are arranged alternately along the circumference of the connecting cylinder (110). One side of each push block (310) has a guide push surface (311) and the other side has a limiting surface (312). A pre-installation cavity (400) and a limiting cavity (500) are formed between the outer sleeve (300) and the connecting cylinder (110). The pre-installation cavity (400) and the limiting cavity (500) correspond one-to-one with the retaining bead (200). The pre-installation cavity (400) is located between the guide push surface (311) and the adjacent limiting block (320). The limiting cavity (500) is provided with... The outer sleeve (300) is placed between the limiting surface (312) and the adjacent limiting block (320); the outer sleeve (300) can rotate around the connecting cylinder (110), and the outer sleeve (300) can rotate to the pre-installed position. In the pre-installed position, the pre-installed cavity (400) can communicate with the movable through hole (120), and the locking ball (200) can enter the position that cooperates with the movable through hole (120) through the pre-installed cavity (400). When the outer sleeve (300) rotates from the pre-installed position, it can push the locking ball (200) into the movable through hole (120) through the guide pushing surface (311), and after the guide pushing surface (311) passes the locking ball (200), the locking ball (200) enters the limiting cavity (500).

2. The valve connector according to claim 1, characterized in that: The push block (310) has a ratchet tooth structure, the guide push surface (311) is the long side tooth surface of the ratchet tooth, and the limiting surface (312) is the short side tooth surface of the ratchet tooth.

3. The valve connector according to claim 1, characterized in that: The outer kit (300) is provided with a guide surface (330), which is disposed in the pre-installation cavity (400) and is used to guide the retaining bead (200) to the movable through hole (120).

4. The valve connector according to claim 1, characterized in that: The inner wall of the outer sleeve (300) is provided with a stepped surface structure (340). The outer sleeve (300) is movable along the axial direction of the connecting cylinder (110) and, when moving, pushes and makes way for the retaining bead (200) through the stepped surface structure (340).

5. The valve connector according to claim 1 or 4, characterized in that: A first elastic member (600) is provided between the outer sleeve (300) and the base portion (100), the first elastic member (600) being used to hold the outer sleeve (300) in the position where it pushes out the retaining bead (200).

6. The valve connector according to claim 5, characterized in that: The first elastic element (600) is a spring and is sleeved on the outer periphery of the connecting cylinder (110). The two ends of the first elastic element (600) abut against the base part (100) and the outer sleeve (300), respectively.

7. The valve connector according to claim 6, characterized in that: The outer sleeve (300) is provided with a first collar (350), and the base part (100) is provided with a second collar (130). The first collar (350) is sleeved on the first elastic member (600), and the second collar (130) is used to engage with the first collar (350) when the connecting cylinder (110) moves axially.

8. The valve connector according to claim 1, characterized in that: The movable through hole (120) is a tapered hole, and the end of the movable through hole (120) near the center of the connecting cylinder (110) is a small end, and the diameter of the small end is smaller than the diameter of the ball of the retaining bead (200).

9. A pressure reducing valve, characterized in that, Includes the valve connector as described in claim 1.

10. The pressure reducing valve according to claim 9, characterized in that, It also includes a gas intake structure (700), which includes a gas intake nozzle (710), a push rod (720), a second elastic element (730), a drive shaft (740), and a control knob (750). The gas intake nozzle (710) is located at the center of the connecting cylinder (110) and has a gas intake channel for inputting gas into the pressure reducing valve. The push rod (720) is movably disposed in the gas intake channel and can extend and retract within the gas intake channel. When the push rod (720) extends and retracts, it can open and close the gas intake. A channel, a second elastic element (730) is disposed between the push rod (720) and the air intake nozzle (710) and is used to drive the push rod (720) to remain in the position of closing the air intake channel. The drive shaft (740) is rotatably disposed on the base part (100). The drive shaft (740) is provided with a toggle part. When the drive shaft (740) rotates, it pushes the push rod (720) to the position of opening the air intake channel through the toggle part. The control knob (750) is connected to the drive shaft (740) and is used to drive the drive shaft (740) to rotate.

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