Lever-type gas pressure-reducing valve

Abstract

Disclosed is a lever-type gas pressure-reducing valve, comprising a valve body (1), a counterweight member (2), and a mounting mechanism (3), the valve body (1) comprising a valve rod (11), a lever (12), and a valve housing (13), the valve rod (11) being slidably connected to the valve housing (13), one end of the lever (12) being rotatably connected to the valve housing (13), the other end of the lever (12) being connected to the counterweight member (2), the lever (12) abutting the upper end of the valve rod (11), the mounting mechanism (3) comprising a frame (31), a collar (32), a base plate (33), and a response assembly (34), the frame (31) being arranged on one side of the lever (12), the collar (32) being rotatably connected to the frame (31), the base plate (33) being connected to the collar (32), the response assembly (34) being arranged on the base plate (33), and the counterweight member (2) being detachably connected to the substrate (33); when swinging, the lever (12) abuts against the response assembly (34), and the response assembly (34) is used for making the counterweight member (2) separate from the base plate (33), facilitating a user mounting the counterweight member on the working valve body.

Description

A lever-type gas pressure reducing valve Technical Field

[0001] The present application relates to the field of lever valves, and in particular to a lever-type gas pressure reducing valve. Background Art

[0002] The lever pressure reducing valve is a pressure reducing valve with a lever structure. The valve stem and lever are slidably connected in the pressure reducing valve. One end of the valve stem is connected to the valve core, and the other end is connected to the lever. The lever is rotatably connected to the valve housing. A counterweight is set on the lever. The valve outlet pressure is set by the counterweight on the lever. There is no spring in the lever pressure reducing valve, and it can be used to control the inlet and outlet of higher temperature fluids.

[0003] The relevant lever pressure reducing valve includes a valve housing, a valve stem and a lever. A valve core is arranged in the valve housing. The valve stem passes through and is slidably connected to the valve housing. One end of the valve stem is connected to the valve core, and the other end is connected to the middle part of the lever. One end of the lever is rotatably connected to the valve housing, and the other end is used to set a counterweight. When the fluid enters the valve housing, the valve core closes the channel in the valve housing under the gravity of the counterweight, so that the valve body is closed. When the fluid pressure entering the valve housing is large, the fluid pressure overcomes the gravity of the counterweight and pushes the valve core, so that the valve core and valve stem move upward. At this time, the lever swings, the counterweight position rises, and the valve body remains unobstructed.

[0004] The above-mentioned related technical solutions have the following defects: when the usage scenario changes, more counterweights need to be set on the lever to control the opening and closing degree of the valve body. When installing the counterweight, the lever has a chance to swing back and forth. The user must stop the fluid from flowing into the valve body before safely installing the counterweight, which causes inconvenience. Summary of the Invention

[0005] In order to facilitate users to install a counterweight on a working valve body, the present application provides a lever-type gas pressure reducing valve.

[0006] The present application provides a lever-type gas pressure reducing valve adopting the following technical solution:

[0007] A lever-type gas pressure reducing valve comprises a valve body, a counterweight and a mounting mechanism. The valve body comprises a valve stem, a lever and a valve housing. The valve stem is slidingly connected to the valve housing. One end of the lever is rotatably connected to the valve housing, and the other end is connected to the counterweight. The lever abuts against the upper end of the valve stem. The mounting mechanism comprises a frame, a collar, a base plate and a response assembly. The frame is arranged on one side of the lever, the collar is rotatably connected to the frame, the base plate is connected to the collar, the response assembly is arranged on the base plate, the counterweight is detachably connected to the base plate, and the lever abuts against the response assembly when swinging. The response assembly is used to disconnect the counterweight from the base plate.

[0008] By adopting the above technical solution, a valve stem is arranged on the valve housing so that the valve stem can drive the valve core to slide in the valve housing, thereby adjusting the opening and closing degree of the valve body. The middle part of the lever is connected to the valve stem by rotating the connecting lever on the valve housing. When the valve stem and the valve core move upward, the valve stem pushes the lever and the counterweight, thereby causing the lever to swing. By arranging a mounting mechanism on one side of the valve body, the user can install the counterweight to be installed on the base plate so that the base plate and the counterweight are located on one side of the lever. When the lever swings back and forth, the lever can push the base plate and the counterweight, and the base plate and the counterweight are tilted on the frame through the collar. When the lever is pressed against the response component, the counterweight and the base plate are disconnected. At this time, the counterweight can slide onto the lever, so that the counterweight is installed on the swinging lever, which is convenient for the user to install the counterweight on the working valve body.

[0009] Optionally, the counterweight is a circular plate structure, a connecting hole is opened at the center of the counterweight, a mounting rod is provided on the lever, and the counterweight is mounted on the mounting rod through the connecting hole.

[0010] By adopting the above technical solution, a connecting hole is opened on the counterweight, and a mounting rod is provided on the lever so that the mounting rod can swing through the lever. When the counterweight is installed on the base plate, the mounting rod can swing against the counterweight, so that the counterweight is tilted and abuts against the mounting rod. When the counterweight is installed on the base plate, the response component is located in the connecting hole of the counterweight. When the mounting rod abuts against the counterweight and is inserted into the connecting hole, the mounting rod contacts the response component, and the response component disconnects the counterweight from the base plate. At this time, the tilted counterweight can slide along the mounting rod and connect to the lever.

[0011] Optionally, the mounting rod is tilted on the lever, and the mounting rod is tilted upward.

[0012] By adopting the above technical solution, the mounting rod is installed on the lever at an angle, thereby reducing the probability of the counterweight sliding off the mounting rod when the counterweight swings on the lever.

[0013] Optionally, the rack includes a horizontal rack and two vertical racks, the horizontal rack is perpendicular to the vertical rack, a rotating seat is provided on one end of the vertical rack away from the horizontal rack, the rotating seat is rotatably connected to the ground, and a clamping block is provided on the rotating seat, which is used to clamp the rotating seat and make the rack vertically set on the ground.

[0014] By adopting the above technical solution, a rotating seat is provided on the vertical frame so that the frame is rotatably connected to the ground. The user can rotate the frame to move the frame away from the valve body and install a counterweight on the base plate, which is convenient for use. After the counterweight is installed on the base plate, the user rotates the frame to move the frame close to the lever and the mounting rod. At this time, the frame is maintained in a vertical state by the clamping block, and the clamping block supports the frame.

[0015] Optionally, a plurality of claws are provided on the base plate, the claws are slidably connected to the base plate, and a spring is provided on the claws, which is used to pull the claws and enable the plurality of claws to clamp the counterweight together.

[0016] By adopting the above technical solution, a claw is set on the base plate, so that the claw can clamp the counterweight by sliding. In the natural state, the spring pulls the claw so that the claw and the counterweight remain in contact, thereby stably connecting the counterweight to the base plate.

[0017] Optionally, the response component includes a universal ball and multiple push rods, the universal ball includes a round ball and a ball seat, the round ball is embedded in the ball seat and is rollingly connected to the ball seat, multiple push rods are rotatably connected to the ball seat, the end of the push rod away from the universal ball is rotatably connected to the claw, each claw is connected to a push rod, the mounting rod is used to abut against the universal ball, and the universal ball pushes the claw through the push rod.

[0018] By adopting the above technical solution, a universal ball is arranged in the middle of multiple claws. When the counterweight is installed on the base plate, the universal ball is located in the connecting hole of the counterweight. When the mounting rod is inserted into the connecting hole of the counterweight, the mounting rod pushes the universal ball, and the push rod pushes multiple claws, thereby disconnecting the counterweight from the base plate. After being disconnected from the base plate, the counterweight can slide along the mounting rod onto the lever.

[0019] Optionally, a sphere is provided on one end of the mounting rod away from the lever, and the sphere is embedded in and rollingly connected to the end surface of the mounting rod.

[0020] By adopting the above technical solution, by arranging a sphere on the mounting rod, the mounting rod abuts against the counterweight and the response component through the sphere, thereby reducing the friction force when the mounting rod slides on the end face of the counterweight.

[0021] Optionally, a sliding rod is provided on one end of the valve stem outside the valve housing, a sliding groove is provided on the lever, the length direction of the sliding groove is parallel to the length direction of the lever, and the sliding rod is slidably connected in the sliding groove.

[0022] By adopting the above technical solution, a sliding rod is set on the valve stem, so that the valve stem is slidably connected to the middle part of the lever through the sliding rod. When the valve stem moves vertically back and forth, the sliding rod slides in the sliding groove, so that the valve stem and the lever can always remain connected.

[0023] In summary, the beneficial technical effects of this application are:

[0024] 1. By providing a mounting mechanism on one side of the valve body, the user can rotate the frame away from the valve body and install the counterweight on the base plate. By rotating the frame close to the valve body, when the lever and the mounting rod swing back and forth, the mounting rod can abut against the end face of the counterweight on the base plate. When the mounting rod swings into the connection hole for inserting the counterweight, the response component causes the claw to slide, thereby disconnecting the counterweight from the base plate, allowing the counterweight to be installed on the valve body in the working state.

[0025] 2. By arranging a universal ball and a push rod on the claw, when the mounting rod is inserted into the connection hole of the counterweight on the base plate, the universal ball pushes the claw through the push rod, thereby disconnecting the counterweight from the base plate. The counterweight disconnected from the base plate can slide along the mounting rod, thereby connecting the counterweight to the lever;

[0026] 3. By connecting the mounting rod to the lever at an angle, when the counterweight is mounted on the mounting rod and swings with the lever, the probability of the counterweight being disconnected from the lever can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic structural diagram of a valve body according to an embodiment of the present application.

[0028] FIG2 is a structural diagram 1 of the installation mechanism according to an embodiment of the present application.

[0029] FIG3 is a second structural diagram of the installation mechanism according to an embodiment of the present application.

[0030] FIG4 is a schematic diagram of the installation structure of the clamping claw and the base plate according to an embodiment of the present application.

[0031] Figure numerals: 1. valve body; 11. valve stem; 111. slide rod; 12. lever; 121. slide groove; 122. mounting rod; 123. ball; 13. valve housing; 131. shaft seat; 2. counterweight; 21. connecting hole; 3. mounting mechanism; 31. frame; 311. horizontal frame; 312. vertical frame; 313. rotating seat; 314. block; 32. collar; 321. rocker arm; 33. base plate; 331. claw; 332. spring; 34. response component; 341. universal ball; 342. push rod. DETAILED DESCRIPTION

[0032] The present application is further described in detail below with reference to the accompanying drawings.

[0033] The present application discloses a lever-type gas pressure reducing valve. Referring to Figures 1 and 2, the valve body 1 includes a counterweight 2 and a mounting mechanism 3. The valve body 1 includes a valve stem 11, a lever 12 and a valve housing 13. The valve stem 11 is slidably connected to the valve housing 13. The valve housing 13 is provided with multiple inlets and outlets. The user can install pipes on the inlets and outlets and pass fluid into the valve housing 13. One end of the valve stem 11 extends into the valve housing 13 and is connected to the valve core. The valve stem 11 drives the valve core to move in the valve housing 13, thereby controlling the valve body. 1, the lever 12 is rotatably connected to the valve housing 13, and the lever 12 can drive the valve stem 11 to move. By installing the counterweight 2 on the lever 12, the steam pressure needs to overcome the gravity of the counterweight 2 to push the valve core. When the pressure inside the valve body 1 is high, the steam pressure pushes the valve core, causing the valve stem 11 to push the lever 12 and the counterweight 2. At this time, the valve core moves, so that the exhaust port on the valve housing 13 is connected to the space inside the valve housing 13, thereby allowing the high-pressure gas to be discharged from the valve body 1, achieving the effect of reducing pressure. The installation mechanism 3 is installed on one side of the valve body 1, and the counterweight 2 is detachably connected to the installation mechanism 3. The installation mechanism 3 is used to install the counterweight 2 on the swinging lever 12. During the installation process, the valve body 1 remains in working condition, reducing the steps of closing the liquid and gas pressure pipelines, and facilitating use.

[0034] Referring to Figure 1 , a slide rod 111 is mounted on the top of valve stem 11, with its length perpendicular to that of valve stem 11. A shaft seat 131 is mounted on the top of valve housing 13. Lever 12 is pivotally connected to shaft seat 131 at one end and to mounting rod 122 at the other end, which is used to connect to counterweight 2. A slide slot 121 is defined in the middle of lever 12, with its length parallel to that of lever 12. Slide rod 111 slides within this slot. When valve stem 11 moves vertically, it drives lever 12 to swing via slide rod 111.

[0035] 1 and 2 , the counterweight 2 is a disc-shaped structure with a through-hole 21 defined at the center thereof. The counterweight 2 is mounted on a mounting rod 122 via the through-hole 21. The mounting rod 122 is angled relative to the lever 12 and tilted upward, thereby reducing the chance of the counterweight 2 slipping off the mounting rod 122 when the lever 12 swings.

[0036] 2, 3 and 4, the mounting mechanism 3 includes a frame 31, a collar 32, a base plate 33 and a response assembly 34. The frame 31 is provided on one side of the valve body 1, the collar 32 is rotatably connected to the frame 31, the base plate 33 is connected to the collar 32, and the response assembly 34 is mounted on the base plate 33. The counterweight 2 is detachably connected to the base plate 33. When the lever 12 drives the mounting rod 122 to swing, the mounting rod 122 can abut against the counterweight 2 mounted on the base plate 33. When the mounting rod 122 swings to the point where it is inserted into the connection hole 21 of the counterweight 2, the mounting rod 122 can touch the response assembly 34. At this time, the counterweight 2 can be disconnected from the base plate 33, allowing the counterweight 2 to slide onto the mounting rod 122.

[0037] 2 and 3 , the frame 31 includes a horizontal frame 311 and two vertical frames 312. The horizontal frame 311 and the vertical frames 312 are perpendicular to each other, and the two vertical frames 312 are respectively arranged at both ends of the horizontal frame 311. The end of the vertical frame 312 away from the horizontal frame 311 is set on the ground. A rotating seat 313 is provided at the end of the vertical frame 312. The rotating seat 313 is rotatably connected to the ground. By rotating the frame 31, the frame 31 can be moved closer to or away from the mounting rod 122, thereby facilitating the user to install the counterweight 2 on the base plate 33. A clamping block 314 is provided on one side of the rotating seat 313. The clamping block 314 is used to clamp the rotating seat 313, so that the frame 31 can remain vertical and close to the mounting rod 122.

[0038] 4 , a rocker arm 321 is provided on the collar 32. One end of the rocker arm 321 is fixed to the collar 32 and the other end is fixed to the base plate 33. The collar 32 is rotatably connected to the horizontal frame 311. The length direction of the horizontal frame 311 is perpendicular to the length direction of the mounting rod 122.

[0039] Referring to Figure 4 , the base plate 33 is provided with a plurality of claws 331, spaced evenly along the circumference. The claws 331 are slidably connected to the base plate 33, and the claws 331 slide toward the same point. Springs 332 are provided on the claws 331 to pull them. When the counterweight 2 is mounted in the claws 331, the springs 332 pull the claws 331, ensuring that they always hold the counterweight 2. The response assembly 34 is positioned at the center of the circle formed by the claws 331.

[0040] 4 , the response assembly 34 includes a universal ball 341 and a plurality of push rods 342. The universal ball 341 includes a ball and a seat. The ball is embedded in the seat and is in rolling connection with the seat. A plurality of push rods 342 are connected to the seat in a circumferential direction. Each push rod 342 is rotatably connected to a claw 331. Under the natural state, the spring 332 pulls the claw 331 so that the claw 331 is arranged at an angle relative to the push rod 342. When the counterweight 2 is installed on the base plate 33, the universal ball 341 and the push rod 342 extend into the connecting hole 21 of the counterweight 2. When the mounting rod 122 is inserted into the connecting hole 21 and pushes the universal ball 341, the universal ball 341 pushes the push rod 342, and the push rod 342 pushes the claw 331 to slide in the direction away from the universal ball 341, thereby moving the plurality of claws 331 away from the counterweight 2, thereby achieving the effect of disconnecting the claw 331 from the counterweight 2. A sphere 123 is provided at the end of the mounting rod 122 away from the lever 12. The sphere 123 is embedded in the end face of the mounting rod 122 and is rollingly connected to the mounting rod 122. When the mounting rod 122 swings with the lever 12, the mounting rod 122 is pressed against the end face of the counterweight 2 on the base plate 33 through the sphere 123. When the mounting rod 122 slides to the connecting hole 21, the counterweight 2 is rotated to an inclined state through the collar 32. At this time, the sphere 123 abuts against the universal ball 341, and the claw 331 is disconnected from the counterweight 2. The counterweight 2 can slide along the mounting rod 122 and be connected to the lever 12.

[0041] The implementation principle of the embodiment of the present application is: by arranging a mounting mechanism 3 on one side of the valve body 1, the counterweight 2 can be installed on the base plate 33. When the valve body 1 is working, the lever 12 can swing and abut against the end face of the counterweight 2 on the base plate 33, so that the mounting rod 122 abuts against the universal ball 341, causing the claw 331 to slide and disconnect from the counterweight 2, thereby enabling the counterweight 2 on the base plate 33 to be installed on the swinging lever 12, which can reduce the chance of the lever 12 swinging violently and injuring the user when the user installs the counterweight 2.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lever-type gas pressure reducing valve, characterized in that: The invention comprises a valve body (1), a counterweight (2) and a mounting mechanism (3), wherein the valve body (1) comprises a valve stem (11), a lever (12) and a valve housing (13), wherein the valve stem (11) is slidably connected to the valve housing (13), one end of the lever (12) is rotatably connected to the valve housing (13), and the other end is connected to the counterweight (2), and the lever (12) abuts against the upper end of the valve stem (11), and the mounting mechanism (3) comprises a frame (31), a collar (32), a base plate (33) and A response component (34), a frame (31) is arranged on one side of the lever (12), a collar (32) is rotatably connected to the frame (31), a base plate (33) is connected to the collar (32), a response component (34) is arranged on the base plate (33), a counterweight (2) is detachably connected to the base plate (33), the lever (12) abuts against the response component (34) when swinging, and the response component (34) is used to disconnect the counterweight (2) from the base plate (33).

2. A lever-type gas pressure reducing valve according to claim 1, characterized in that: The counterweight (2) is a circular plate structure, a connecting hole (21) is provided at the center of the counterweight (2), a mounting rod (122) is provided on the lever (12), and the counterweight (2) is mounted on the mounting rod (122) through the connecting hole (21).

3. A lever-type gas pressure reducing valve according to claim 2, characterized in that: The mounting rod (122) is tiltedly arranged on the lever (12), and the mounting rod (122) is tilted upward.

4. The lever-type gas pressure reducing valve according to claim 2, characterized in that: The frame (31) comprises a horizontal frame (311) and two vertical frames (312), the horizontal frame (311) being perpendicular to the vertical frames (312), a rotating seat (313) being arranged on one end of the vertical frames (312) away from the horizontal frame (311), the rotating seat (313) being rotatably connected to the ground, a clamping block (314) being arranged on the rotating seat (313), the clamping block (314) being used to clamp the rotating seat (313) and enable the frame (31) to be arranged vertically on the ground.

5. A lever-type gas pressure reducing valve according to claim 4, characterized in that: A plurality of claws (331) are provided on the base plate (33), the claws (331) are slidably connected to the base plate (33), a spring (332) is provided on the claws (331), and the spring (332) is used to pull the claws (331) and enable the plurality of claws (331) to clamp the counterweight (2) together.

6. The lever-type gas pressure reducing valve according to claim 5, characterized in that: The response component (34) comprises a universal ball (341) and a plurality of push rods (342). The universal ball (341) comprises a round ball and a ball seat. The round ball is embedded in the ball seat and is rollingly connected to the ball seat. The plurality of push rods (342) are rotatably connected to the ball seat. One end of the push rod (342) away from the universal ball (341) is rotatably connected to a claw (331). Each claw (331) is connected to a push rod (342). The mounting rod (122) is used to abut against the universal ball (341). The universal ball (341) pushes the claw (331) through the push rod (342).

7. The lever-type gas pressure reducing valve according to claim 6, characterized in that: A sphere (123) is provided on one end of the mounting rod (122) away from the lever (12), and the sphere (123) is embedded in and rollingly connected to the end surface of the mounting rod (122).

8. The lever-type gas pressure reducing valve according to claim 1, characterized in that: A sliding rod (111) is provided on one end of the valve stem (11) located outside the valve housing (13), and a sliding groove (121) is provided on the lever (12). The length direction of the sliding groove (121) is parallel to the length direction of the lever (12), and the sliding rod (111) is slidably connected in the sliding groove (121).

Images