Safety switch integrated pressure reducing valve

Abstract

The utility model discloses a safety switch integrated pressure reducing valve. The safety switch integrated pressure reducing valve comprises a valve body, a valve body and a safety switch assembly. The valve body comprises a main seat body and an output seat which are integrally arranged, the main seat body is provided with a pressure reducing valve cavity and an air inlet channel, the output seat is provided with an output channel, and the air inlet channel is communicated with the output channel through the pressure reducing valve cavity. The pressure reducing mechanism is arranged in the pressure reducing valve cavity. The safety switch assembly comprises a valve element assembly and a driving mechanism, the valve element assembly comprises a mounting cylinder and a valve element, the mounting cylinder is matched with the inner wall of the output channel and inserted into the inner wall of the output channel, the periphery of the mounting cylinder is in sealing fit with the inner wall of the output channel, the mounting cylinder is provided with an inner hole channel, and the valve element is movably arranged in the mounting cylinder. The valve element has a closing position and an opening position, and the driving mechanism is arranged on the output base and used for driving the valve element to switch the positions. The pressure reducing valve with the structure is simple and compact in structure, low in use cost and convenient to assemble.

Description

Technical Field

[0001] This utility model relates to gas valves, and more particularly to a pressure reducing valve with an integrated safety switch. Background Technology

[0002] Some existing pressure reducing valves are used with safety switches to enhance safety. These safety switches connect to sensors and cut off the gas supply in cases such as gas leaks. Currently, the safety switch and pressure reducing valve are typically two separate products, assembled together during use. This results in a complex overall structure, cumbersome operation, and a higher risk of sealing problems. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a pressure reducing valve with an integrated safety switch.

[0004] An integrated pressure reducing valve with a safety switch according to an embodiment of the present invention includes: a valve body comprising an integrally formed main seat and an output seat, the main seat having a pressure reducing valve chamber and an air inlet channel, the output seat having an output channel, the air inlet channel being connected to the pressure reducing valve chamber and the output channel; a pressure reducing mechanism disposed in the pressure reducing valve chamber; and a safety switch assembly comprising a valve core assembly and a drive mechanism, the valve core assembly comprising a mounting cylinder and a valve core, the mounting cylinder being adapted to and inserted into the inner wall of the output channel, the outer periphery of the mounting cylinder being sealed to the inner wall of the output channel, the mounting cylinder having an inner hole channel, the valve core being disposed in the mounting cylinder and movably disposed, the valve core having a closed position and an open position, in the closed position, the valve core blocking the inner hole channel to block the output channel; in the open position, the valve core opening the inner hole channel to open the output channel; and the drive mechanism being disposed in the output seat and used to drive the valve core to switch positions.

[0005] According to an embodiment of the present invention, a pressure reducing valve with an integrated safety switch has at least the following advantages: The pressure reducing valve body adopts an integrated main seat and output seat, and integrates a safety switch assembly on the output seat, thereby avoiding the need for a retrofitted safety switch, reducing the risk of air leakage, facilitating maintenance, simplifying the use of the pressure reducing valve, reducing the cost of using the pressure reducing valve, and having a relatively compact structure that saves space; the safety switch assembly includes a valve core assembly and a drive mechanism, the valve core assembly includes an mounting cylinder and a valve core, and the mounting cylinder is directly installed into the output channel, resulting in a simple and compact structure that is easy to assemble.

[0006] According to some embodiments of the present invention, the valve core is axially movable along the inner hole channel, a sealing ring is provided on the inner wall of the inner hole channel, and a blocking ring is provided on the outer periphery of the valve core. The blocking ring is used to abut against the sealing ring to block the inner hole channel, and the driving mechanism is used to drive the valve core to move axially to switch the closed position and the open position.

[0007] According to some embodiments of the present invention, the driving mechanism includes a driver and a first elastic element. The driver is provided with a pushing part. The pushing part and the first elastic element are respectively located on both sides of the valve core along the axial direction. The first elastic element is disposed between the valve core and the mounting cylinder and is used to apply a spring force to the valve core to keep it in the closed position. The pushing part is used to push the valve core into the open position.

[0008] According to some embodiments of the present invention, the side wall of the output channel is provided with an upper through hole, and the side wall of the mounting cylinder is provided with a lower through hole. The upper through hole and the lower through hole are opposite to each other. The driver is fixed to the outer periphery of the output base and extends into the inner hole channel through the upper through hole and the lower through hole.

[0009] According to some embodiments of the present invention, the driver is a motor, the axis of the output shaft of the motor is perpendicular to the axis of the output channel, the output shaft of the motor is inserted into the upper through hole and the lower through hole and is sealed to the upper through hole, and the pushing part is an eccentric part disposed on the output shaft of the motor.

[0010] According to some embodiments of the present invention, the driving mechanism is an electric driving mechanism, and the valve body is further provided with a battery for providing power to the driving mechanism.

[0011] According to some embodiments of the present invention, the mounting cylinder includes a main cylinder body, a sealing ring, and a fastening element. The fastening element is fastened to one end of the main cylinder body, and the sealing ring is clamped and fixed between the main cylinder body and the fastening element. The sealing ring is the inner ring of the sealing ring.

[0012] According to some embodiments of the present invention, the mounting cylinder is provided with a connecting sleeve, the valve core is provided with a sliding column, and the valve core is slidably connected to the connecting sleeve through the sliding column.

[0013] According to some embodiments of the present invention, an installation component is provided in the output channel, an output port is provided at the end of the output channel away from the pressure reducing valve cavity, a connecting pipe head is installed at the output port, and the installation cylinder is clamped and fixed between the installation component and the connecting pipe head.

[0014] According to some embodiments of this utility model, the pressure reducing mechanism includes a diaphragm, a second elastic element, a diaphragm connector, and a lever. The diaphragm and the main seat body enclose the pressure reducing valve cavity. The second elastic element is disposed between the diaphragm and the main seat body and is used to drive the diaphragm to return to the pressure reducing valve cavity. The diaphragm connector is fixed to the center of the diaphragm and is provided with a linkage frame. The lever is hinged to the main seat body, and one end of the lever is inserted into the linkage frame. The channel wall of the air intake channel has a connecting hole for connecting the air intake channel and the pressure reducing valve cavity. The other end of the lever is provided with a sealing plug for sealing the connecting hole.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded view of an embodiment of the present invention;

[0019] Figure 3 for Figure 1 A cross-sectional view of the structure shown along the AA direction;

[0020] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0021] Figure 5 This is an exploded view of the valve core assembly according to an embodiment of the present utility model;

[0022] Figure 6 for Figure 1 A cross-sectional view of the structure shown in the BB direction;

[0023] Figure 7 for Figure 1 A partial schematic diagram of the structure shown in the C direction.

[0024] Figure label:

[0025] Valve body 100, main seat 110, output seat 120, pressure reducing valve chamber 111, air inlet channel 112, output channel 121, upper through hole 122;

[0026] Pressure reducing mechanism 200, diaphragm 210, second elastic element 220, diaphragm connector 230, lever element 240;

[0027] Safety switch assembly 300, valve core assembly 310, drive mechanism 320, mounting cylinder 311, valve core 312, inner hole channel 3111, driver 321, first elastic element 322, push part 3211, lower through hole 3112, main cylinder 3113, sealing ring 3114, snap fastener 3115, connecting sleeve 3116;

[0028] Mounting component 400;

[0029] Connector head 500;

[0030] Air source connection structure 600, connecting cylinder 610, outer sleeve 620, retaining ball 630, movable through hole 611, push block 621, limiting block 622, guide push surface 6211, limiting surface 6212, pre-installation cavity 640, limiting cavity 650, stepped surface structure 623, guide surface 624, third elastic element 660;

[0031] Air intake structure 700, air intake nozzle 710, push rod 720, fourth elastic element 730, drive shaft 740, control knob 750. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] Reference Figures 1 to 7 A safety switch integrated pressure reducing valve includes: a valve body 100, a safety switch assembly 300. The valve body 100 includes an integrally formed main seat 110 and an output seat 120. The main seat 110 is provided with a pressure reducing valve chamber 111 and an air inlet channel 112. The output seat 120 is provided with an output channel 121. The air inlet channel 112 is connected to the pressure reducing valve chamber 111 and the output channel 121. A pressure reducing mechanism 200 is disposed in the pressure reducing valve chamber 111. The safety switch assembly 300 includes a valve core assembly 310 and a drive mechanism 320. The valve core assembly 310 includes a mounting cylinder 311 and a valve core 312. The mounting cylinder 311 is adapted to and inserted into the inner wall of the output channel 121. The outer periphery of the mounting cylinder 311 and the inner wall of the output channel 121 are sealed together. The mounting cylinder 311 is provided with an inner hole channel 3111. The valve core 312 is disposed in the mounting cylinder 311 and is movably disposed. The valve core 312 has a closed position and an open position. In the closed position, the valve core 312 blocks the inner hole channel 3111 to block the output channel 121. In the open position, the valve core 312 opens the inner hole channel 3111 to open the output channel 121. The drive mechanism 320 is disposed in the output seat 120 and is used to drive the valve core 312 to switch positions.

[0037] The aforementioned pressure reducing valve has a valve body 100 with an integrally set main seat 110 and output seat 120, and a safety switch assembly 300 is integrated on the output seat 120, thereby avoiding the need for a retrofitted safety switch, reducing the risk of air leakage, facilitating maintenance, simplifying the use of the pressure reducing valve, reducing the cost of using the pressure reducing valve, and having a relatively compact structure that saves space. The safety switch assembly 300 includes a valve core assembly 310 and a drive mechanism 320. The valve core assembly 310 includes a mounting cylinder 311 and a valve core 312. The mounting cylinder 311 is directly installed into the output channel 121, resulting in a simple and compact structure that is easy to assemble.

[0038] In this embodiment, the valve core 312 is axially movable along the inner channel 3111. A sealing ring is provided on the inner wall of the inner channel 3111, and a blocking ring is provided on the outer periphery of the valve core 312. The blocking ring abuts against the sealing ring to block the inner channel 3111. The drive mechanism 320 drives the valve core 312 to move axially, switching between the closed and open positions. With this structure, the valve core 312 operates simply and reliably, and the seal is reliable. It is conceivable that in other embodiments, the valve core 312 is not limited to an axially movable structure; for example, it may be a rotary structure, and the specific configuration can be tailored to the actual situation.

[0039] In some embodiments, a sealing ring can be provided on the outer periphery of the mounting cylinder 311 to achieve a sealing fit with the inner wall of the output channel 121, or in some embodiments, a sealing ring can be provided on the inner wall of the output channel 121 to achieve a sealing fit with the outer periphery of the mounting cylinder 311.

[0040] In this embodiment, the drive mechanism 320 includes a driver 321 and a first elastic member 322. The driver 321 is provided with a pushing part 3211. The pushing part 3211 and the first elastic member 322 are respectively located on both sides of the valve core 312 along the axial direction. The first elastic member 322 is disposed between the valve core 312 and the mounting cylinder 311 and is used to apply a spring force to the valve core 312 to keep it in the closed position. The pushing part 3211 is used to push the valve core 312 into the open position. With the above structure, the driver 321 can drive from one side, and the first elastic member 322 is used to perform the reset operation of the valve core 312. The structure of the drive mechanism 320 is simple. In addition, the first elastic member 322 can also ensure that the valve core 312 is stably in the closed position. It is conceivable that in some embodiments, the drive mechanism 320 is not limited to the above structure. For example, some reciprocating drivers 321, such as electromagnets, can be used to directly drive the valve core 312 to reciprocate and switch positions.

[0041] In this embodiment, the sidewall of the output channel 121 is provided with an upper through hole 122, and the sidewall of the mounting cylinder 311 is provided with a lower through hole 3112. The upper through hole 122 and the lower through hole 3112 are opposite to each other. The driver 321 is fixed to the outer periphery of the output base 120 and extends into the inner hole channel 3111 through the upper through hole 122 and the lower through hole 3112. With the above structure, the driver 321 can be installed simply, and the overall structure is compact.

[0042] In this embodiment, the driver 321 is a motor, and the axis of the motor's output shaft is perpendicular to the axis of the output channel 121. The motor's output shaft is inserted into the upper through hole 122 and the lower through hole 3112 and is sealed to the upper through hole 122. The pushing part 3211 is an eccentric part disposed on the output shaft of the motor. The driver 321 uses a motor, and the pushing part 3211 is set as an eccentric part of the motor's output shaft. When the output shaft rotates, the reciprocating motion of the eccentric part can be used to push the valve core 312. The drive structure is simple and easy to implement.

[0043] In this embodiment, the drive mechanism 320 is an electrically driven mechanism, and the valve body 100 is also equipped with a battery for providing power to the drive mechanism 320. With the above structure, the drive mechanism 320 can be independently powered by a battery, thus avoiding external wiring and making it convenient to use.

[0044] In this embodiment, the mounting cylinder 311 includes a main cylinder 3113, a sealing ring 3114, and a snap-fit ​​component 3115. The snap-fit ​​component 3115 is snapped onto one end of the main cylinder 3113, and the sealing ring 3114 is clamped and fixed between the main cylinder 3113 and the snap-fit ​​component 3115. The sealing ring is the inner ring of the sealing ring 3114. Using the above structure, the sealing ring 3114 can be easily fixed to form a sealing ring; the structure is simple and easy to assemble.

[0045] In this embodiment, a recessed groove is provided at one end of the main cylinder 3113, a sealing ring 3114 is disposed in the recessed groove, and an insertion part is provided at one end of the snap-fit ​​member 3115. The insertion part is adapted to the recessed groove and inserted into it. A snap-fit ​​part is provided on the outer periphery of the insertion part, and a snap-fit ​​mating part is provided on the groove wall of the recessed groove. The snap-fit ​​part and the snap-fit ​​mating part are engaged with each other. The bottom of the recessed groove and the end face of the insertion part clamp the sealing ring 3114. With the above structure, the main cylinder 3113 and the snap-fit ​​member 3115 can be securely snapped together, resulting in a stable connection. In this embodiment, the snap-fit ​​part and the snap-fit ​​mating part can be mutually adapted grooves and protrusions.

[0046] In this embodiment, the mounting sleeve 311 is provided with a connecting sleeve 3116, and the valve core 312 is provided with a sliding post. The valve core 312 is slidably connected to the connecting sleeve 3116 via the sliding post. By providing the connecting sleeve 3116, the valve core 312 can be easily and movably connected.

[0047] In this embodiment, a mounting component 400 is provided within the output channel 121, and an output port is provided at the end of the output channel 121 away from the pressure reducing valve chamber 111. A connecting pipe head 500 is installed at the output port, and the mounting cylinder 311 is clamped and fixed between the mounting component 400 and the connecting pipe head 500. Using the above structure, the mounting cylinder 311 can be axially positioned and fixed, ensuring a stable installation. When assembling the mounting cylinder 311, it can be first inserted into the output port of the output channel 121, and then the connecting pipe head 500 is used to position and fix the mounting cylinder 311.

[0048] In this embodiment, the pressure reducing mechanism 200 includes a diaphragm 210, a second elastic element 220, a diaphragm connector 230, and a lever 240. The diaphragm 210 and the main seat 110 enclose a pressure reducing valve cavity 111. The second elastic element 220 is disposed between the diaphragm 210 and the main seat 110 and is used to drive the diaphragm 210 to reset toward the pressure reducing valve cavity 111. The diaphragm connector 230 is fixed to the center of the diaphragm 210 and is provided with a linkage frame. The lever 240 is hinged to the main seat 110 and one end of the lever 240 is inserted into the linkage frame. The channel wall of the air intake channel 112 is provided with a connecting hole for connecting the air intake channel 112 and the pressure reducing valve cavity 111. The other end of the lever 240 is provided with a sealing plug for sealing the connecting hole. Gas can enter the pressure reducing valve chamber 111 through the inlet passage 112 via the connecting hole. When the gas pressure is high, it will push the diaphragm 210 to deform. When the gas pressure exceeds the predetermined range, the diaphragm 210 drives the diaphragm connector 230 to move, which in turn drives the lever 240 to rotate through the linkage frame. The lever 240 blocks the connecting hole through the sealing plug, thereby reducing the pressure in the pressure reducing valve chamber 111. The diaphragm 210 is then reset by the diaphragm 210 reset elastic element, no longer exerting force on the lever 240, thus allowing gas to push open the sealing plug and enter the pressure reducing valve chamber 111 again. Through the above dynamic change process, it can be ensured that the pressure of the input gas will not exceed the predetermined range, thus achieving pressure reduction. It is conceivable that in other embodiments, the pressure reducing mechanism 200 is not limited to the above structure. In the art, there are many other implementations of the pressure reducing mechanism 200 used in pressure reducing valves, which will not be listed here.

[0049] In this embodiment, the main body 110 is provided with an air source connection structure 600, which includes a connecting cylinder 610, an outer sleeve 620, and a plurality of retaining beads 630. The connecting cylinder 610 is an integral structure with the main body 110. The cylinder wall of the connecting cylinder 610 is provided with movable through holes 611 corresponding to the retaining beads 630. The movable through holes 611 are arranged at intervals along the circumference of the connecting cylinder 610. The retaining beads 630 are movably disposed in the corresponding movable through holes 611. The outer sleeve 620 is provided with a sleeve hole and is movably sleeved on the outer periphery of the connecting cylinder 610. The outer sleeve 620 can move along the axial direction of the connecting cylinder 610 and is used to cooperate with the retaining beads 630, so that the retaining beads 630 can protrude from the inner wall of the connecting cylinder 610 and can move to make room. Specifically, the outer fitting 620 has a locking position and a yielding position. In the locking position, the outer fitting 620 pushes the retaining bead 630, causing it to protrude from the inner wall of the connecting cylinder 610. In the yielding position, the outer fitting 620 yields the retaining bead 630 to allow it to move radially outward. A gas source, such as a gas cylinder, can mate with the connecting cylinder 610 and be engaged by the retaining bead 630 to form a secure connection. When connecting a gas cylinder, the outer fitting 620 can be adjusted to the yielding position first, so that the retaining bead 630 will not affect the installation of the gas cylinder. After the gas cylinder is installed, the outer fitting 620 is then moved into the locking position, and the retaining bead 630 is pushed out and engaged with the gas cylinder.

[0050] In this embodiment, the inner side of the outer sleeve 620 is provided with a plurality of pushing blocks 621 and a plurality of limiting blocks 622. The pushing blocks 621 and the limiting blocks 622 are arranged alternately along the circumference of the connecting cylinder 610. One side of the pushing block 621 is provided with a guiding pushing surface 6211 and the other side is provided with a limiting surface 6212. A pre-installation cavity 640 and a limiting cavity 650 are formed between the outer sleeve 620 and the connecting cylinder 610. The pre-installation cavity 640 is disposed between the guiding pushing surface 6211 and the adjacent limiting block 622, and the limiting cavity 650 is disposed between the limiting surface 6212 and the adjacent limiting block 622. The mounting cavity 640 and the limiting cavity 650 correspond one-to-one with the retaining bead 630. The outer sleeve 620 can rotate around the connecting cylinder 610. The outer sleeve 620 can rotate to the pre-installation position. In the pre-installation position, the pre-installation cavity 640 can communicate with the movable through hole 611. The retaining bead 630 can enter the position that mates with the movable through hole 611 through the pre-installation cavity 640. When the outer sleeve 620 rotates from the pre-installation position, it can push the retaining bead 630 into the movable through hole 611 through the guide push surface 6211. After the guide push surface 6211 passes the retaining bead 630, the retaining bead 630 enters the limiting cavity 650. Using the above structure, when installing the retaining bead 630 between the outer sleeve 620 and the connecting cylinder 610, the outer sleeve 620 can be rotated to the pre-installation position first, and then the retaining bead 630 can be placed in the pre-installation cavity 640 so that the retaining bead 630 can be positioned to mate with the movable through hole 611. Next, the outer sleeve 620 is rotated, and the retaining bead 630 is pushed into the movable through hole 611 by the guide push surface 6211 of the push block 621, so that the guide push surface 6211 passes over the retaining bead 630. Finally, the retaining bead 630 is placed in the limiting cavity 650, and the retaining bead 630 is restricted between the push block 621 and the limiting block 622 (which also restricts the rotation position of the outer sleeve 620), thus completing the installation of the retaining bead 630. Using the above structure, the installation of the retaining bead 630 is convenient. Furthermore, compared to the existing technology that uses the method of pressing the retaining bead 630 directly between the outer component 620 and the connecting cylinder 610 along the axial direction (this method easily causes the outer component 620 and the connecting cylinder 610 to be forcibly pried apart, which is prone to destructive deformation and forming a spout deformation, making it easy for the retaining bead 630 to come out along the original axial path), in this embodiment, the retaining bead 630 is pushed into the movable through hole 611 in the circumferential direction by the push block 621 with the guide push surface 6211. This results in less deformation and damage to the outer component 620 and the connecting cylinder 610, the retaining bead 630 is not easy to come out, and the installation position is more stable.

[0051] In this embodiment, the push block 621 has a ratchet tooth structure, the guide push surface 6211 is the long side tooth surface of the ratchet tooth, and the limiting surface 6212 is the short side tooth surface of the ratchet tooth. Using this structure, the long side tooth surface of the ratchet tooth allows the retaining bead 630 to be smoothly pushed into the movable through hole 611, and also smoothly pass over the retaining bead 630. After pushing the retaining bead 630, the push block 621 with its ratchet tooth structure can also effectively limit the retaining bead 630 and the outer sleeve 620.

[0052] In this embodiment, the outer sleeve 620 is provided with a guide surface 624, which is disposed in the pre-installation cavity 640. The guide surface 624 is used to guide the retaining bead 630 to the movable through hole 611, thereby facilitating the smooth insertion of the retaining bead 630 into the position to be installed. In this embodiment, when the outer sleeve 620 is in the clearance position, the pre-installation cavity 640 is in a position communicating with the movable through hole 611, and the guide surface 624 can directly guide the retaining bead 630 into the movable through hole 611.

[0053] In this embodiment, the inner wall of the outer sleeve 620 is provided with a stepped surface structure 623. When the outer sleeve 620 moves axially, the stepped surface structure 623 pushes and makes way for the retaining bead 630. With the above structure, the stepped surface structure 623 has protruding and recessed portions relative to the retaining bead 630. The protruding portion can push out the retaining bead 630, while the recessed portion makes way for the retaining bead 630. This structure is simple and easy to manufacture and implement.

[0054] In this embodiment, a third elastic member 660 is provided between the outer sleeve 620 and the main body 110. The third elastic member 660 is used to keep the outer sleeve 620 in the locking position, so that the outer sleeve 620 can be stably in the locking position. It is also convenient to operate the outer sleeve 620. As long as the outer sleeve 620 is released, the outer sleeve 620 can be reset to the locking position.

[0055] In this embodiment, the movable through hole 611 is a tapered hole and the end near the center of the connecting cylinder 610 is a small end. The diameter of the small end is smaller than the ball diameter of the retaining bead 630, thereby preventing the retaining bead 630 from coming out inward.

[0056] In this embodiment, the main body 110 is further provided with an air intake structure 700 corresponding to the air source connection structure 600. The air intake structure 700 includes an air intake nozzle 710, a push rod 720, a fourth elastic element 730, a drive shaft 740, and a control knob 750. The air intake nozzle 710 is located at the center of the connecting cylinder 610 and has an air intake channel communicating with the air inlet channel 112. The push rod 720 is movably disposed in the air intake channel and can extend and retract within the air intake channel. During the telescopic movement, the air intake channel can be opened and closed. The fourth 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 main body 110. The drive shaft 740 is provided with a toggle part. When the drive shaft 740 rotates, it pushes the push rod 720 into 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.

[0057] In the embodiments, the elastic element mentioned is a spring. It is conceivable that in some embodiments, the elastic element is not limited to a spring, but may be a sheet or a rubber body, etc. The specific configuration can be made according to the actual situation.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pressure reducing valve with integrated safety switch, characterized in that, include: The valve body (100) includes an integrally formed main seat (110) and an output seat (120). The main seat (110) is provided with a pressure reducing valve chamber (111) and an air intake channel (112). The output seat (120) is provided with an output channel (121). The air intake channel (112) is connected to the pressure reducing valve chamber (111) and the output channel (121). A pressure reducing mechanism (200) is disposed in the pressure reducing valve chamber (111); A safety switch assembly (300) includes a valve core assembly (310) and a drive mechanism (320). The valve core assembly (310) includes a mounting cylinder (311) and a valve core (312). The mounting cylinder (311) is adapted to and inserted into the inner wall of the output channel (121). The outer periphery of the mounting cylinder (311) and the inner wall of the output channel (121) are sealed together. The mounting cylinder (311) is provided with an inner hole channel (3111). The valve core (312) is disposed in the mounting cylinder. (311) The valve core (312) is movable and has a closed position and an open position. In the closed position, the valve core (312) blocks the inner hole channel (3111) to block the output channel (121). In the open position, the valve core (312) opens the inner hole channel (3111) to open the output channel (121). The drive mechanism (320) is disposed on the output seat (120) and is used to drive the valve core (312) to switch positions.

2. The integrated safety switch pressure reducing valve according to claim 1, characterized in that: The valve core (312) is axially movable along the inner hole channel (3111). A sealing ring is provided on the inner wall of the inner hole channel (3111), and a blocking ring is provided on the outer periphery of the valve core (312). The blocking ring is used to abut against the sealing ring to block the inner hole channel (3111). The driving mechanism (320) is used to drive the valve core (312) to move axially to switch between the closed position and the open position.

3. The integrated safety switch pressure reducing valve according to claim 2, characterized in that: The drive mechanism (320) includes a driver (321) and a first elastic element (322). The driver (321) is provided with a pushing part (3211). The pushing part (3211) and the first elastic element (322) are respectively located on both sides of the valve core (312) along the axial direction. The first elastic element (322) is disposed between the valve core (312) and the mounting cylinder (311) and is used to apply a spring force to the valve core (312) to keep it in the closed position. The pushing part (3211) is used to push the valve core (312) into the open position.

4. The integrated safety switch pressure reducing valve according to claim 3, characterized in that: The output channel (121) has an upper through hole (122) on its side wall, and the mounting cylinder (311) has a lower through hole (3112) on its side wall. The upper through hole (122) and the lower through hole (3112) are opposite to each other. The driver (321) is fixed to the outer periphery of the output seat (120) and extends into the inner hole channel (3111) through the upper through hole (122) and the lower through hole (3112).

5. The integrated safety switch pressure reducing valve according to claim 4, characterized in that: The driver (321) is a motor, the axis of the output shaft of the motor is perpendicular to the axis of the output channel (121), the output shaft of the motor is inserted into the upper through hole (122) and the lower through hole (3112) and is sealed with the upper through hole (122), and the pushing part (3211) is an eccentric part provided on the output shaft of the motor.

6. The integrated safety switch pressure reducing valve according to claim 1, characterized in that: The drive mechanism (320) is an electric drive mechanism, and the valve body (100) is also provided with a battery for providing power to the drive mechanism (320).

7. The integrated safety switch pressure reducing valve according to claim 2, characterized in that: The mounting cylinder (311) includes a main cylinder (3113), a sealing ring (3114), and a fastener (3115). The fastener (3115) is fastened to one end of the main cylinder (3113). The sealing ring (3114) is clamped and fixed between the main cylinder (3113) and the fastener (3115). The sealing ring is the inner ring of the sealing ring (3114).

8. The integrated safety switch pressure reducing valve according to claim 2, characterized in that: The mounting sleeve (311) is provided with a connecting sleeve (3116), and the valve core (312) is provided with a sliding post. The valve core (312) is slidably connected to the connecting sleeve (3116) through the sliding post.

9. The integrated safety switch pressure reducing valve according to claim 1, characterized in that: An installation component (400) is provided in the output channel (121). An output port is provided at one end of the output channel (121) away from the pressure reducing valve cavity (111). A connector (500) is installed at the output port. The installation cylinder (311) is clamped and fixed between the installation component (400) and the connector (500).

10. The integrated safety switch pressure reducing valve according to claim 1, characterized in that: The pressure-reducing mechanism (200) includes a diaphragm (210), a second elastic element (220), a diaphragm connector (230), and a lever (240). The diaphragm (210) and the main seat (110) enclose the pressure-reducing valve cavity (111). The second elastic element (220) is disposed between the diaphragm (210) and the main seat (110) and is used to drive the diaphragm (210) to return to the pressure-reducing valve cavity (111). The diaphragm connector (230)... The diaphragm connector (230) is fixed at the center of the diaphragm (210), and the diaphragm connector (230) is provided with a linkage frame. The lever (240) is hinged to the main body (110), and one end of the lever (240) is inserted into the linkage frame. The channel wall of the air intake channel (112) is provided with a connecting hole for connecting the air intake channel (112) and the pressure reducing valve chamber (111). The other end of the lever (240) is provided with a sealing plug, which is used to seal the connecting hole.

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