Air-gas linkage valve

Abstract

The utility model discloses an air-gas linkage valve which comprises a gas pipe, a valve body, a valve body and a valve body. The air inlet pipe is provided with a rotary valve and an adjusting box, the adjusting box is installed on the gas pipe, a rotary cam is arranged in the adjusting box, the cam and the ball valve are connected and rotate synchronously, an inclined first swing rod is arranged in the adjusting box, and one end of the first swing rod is provided with a driving part abutting against the edge of the cam; the first swing rod is rotationally installed in the adjusting box, a second swing rod is further arranged in the adjusting box and rotationally arranged in the adjusting box through a rotating column, the first swing rod drives the second swing rod to swing synchronously through a connecting rod assembly, and one end, extending out of the adjusting box, of the rotating column is provided with a first connector. A second connector which is connected with the rotary valve and rotates synchronously with the rotary valve is arranged on the outer side of the air inlet pipe, the first connector and the second connector are in transmission connection through a universal rotating assembly, and the structure is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of gas stove valve technology, specifically to a gas-air linkage valve. Background Technology

[0002] Commercial gas stoves are mostly used in restaurants. Generally, commercial gas stoves have gas inlet pipes and air inlet pipes. Because the gas inlet pipes require a high degree of sealing, ball valves are used to control the on / off switch and adjust the volume. The air inlet pipes do not have high sealing requirements and, considering cost issues, simple rotary valves are commonly used to control the on / off switch and adjust the volume.

[0003] In operation, to ensure complete combustion, the intake air volume and the intake air volume need to be matched. Therefore, when adjusting the ball valve in the intake pipe, the rotary valve in the intake air pipe also needs to be adjusted simultaneously. Furthermore, for ease of use, the ball valve in the intake pipe and the rotary valve in the intake air pipe need to be linked, so that only one valve needs to be controlled.

[0004] In the prior art, the patent number "CN220958531U" describes a "Gas and Air Volume Adjustment Device for a Gas Furnace Using a Cam": the adjusting cam on the air inlet pipe rotates with the ball valve, the cam drives the rotating rod to swing and pulls the turntable on the air inlet pipe to rotate through the steel wire rope, thereby driving the rotary valve to rotate synchronously.

[0005] However, the aforementioned patents have complex structures and the steel wire ropes are prone to tangling, which is inconvenient in practical use. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model proposes a wind-air linkage valve.

[0007] To achieve the above-mentioned technical effects, the present invention adopts the following solution:

[0008] A pneumatic-pneumatic linkage valve, comprising:

[0009] A gas pipe, wherein the gas pipe is equipped with a ball valve;

[0010] Air inlet pipe, wherein the air inlet pipe is equipped with a rotary valve;

[0011] An adjustment box is installed on the gas pipe. The adjustment box contains a rotating cam connected to a ball valve and rotating synchronously. The adjustment box also contains an inclined first swing rod, one end of which has a drive portion that abuts against the edge of the cam. The first swing rod is rotatably installed inside the adjustment box. The adjustment box also contains a second swing rod, which is rotatably mounted inside the adjustment box via a rotating column. The first swing rod is driven to swing synchronously by a connecting rod assembly. One end of the rotating column extends out of the adjustment box and has a first connector. The outer side of the air inlet pipe has a second connector connected to a rotary valve and rotating synchronously. The first connector and the second connector are connected via a universal rotating assembly.

[0012] In a preferred embodiment, the linkage assembly includes a first linkage and a second linkage. The second linkage is hinged between the first linkage and the first swing rod. The first swing rod drives the first linkage to rotate through the second linkage. One end of the first linkage has a strip-shaped movable hole. One end of the second swing rod is fixedly provided with a movable head that is movably disposed within the movable hole. The diameter of the movable head is the same as the width of the movable hole.

[0013] In a preferred embodiment, the edge of the cam is provided with at least one driving arc segment around a circumference, the driving arc segment including a first arc segment and a second arc segment connected together.

[0014] In a preferred embodiment, a torsion spring is fitted onto the rotating column, and the two ends of the torsion spring are respectively connected to the first connector and the adjusting box.

[0015] In a preferred embodiment, the universal rotating assembly includes a transmission rod, one end of which is connected to a first connector via a universal joint, and the other end of which is connected to a second connector via a universal joint.

[0016] In a preferred embodiment, the through hole on the ball inside the ball valve is rectangular, and one of the diagonals of the through hole is located on the projection of the ball's rotation path.

[0017] In a preferred embodiment, the driving unit includes a roller rotatably mounted on a first swing arm, the roller rolling against the edge of a cam.

[0018] In a preferred embodiment, the adjusting box contains an adjusting component, the two ends of which slide against the adjusting box. The side wall of the adjusting box has two adjusting holes corresponding to the two ends of the adjusting component. The adjusting holes are strip-shaped, and adjusting bolts pass through the adjusting holes. The screw of the adjusting bolt is screwed to the end of the adjusting component, and the head of the adjusting bolt is locked against the outer wall of the adjusting box.

[0019] In a preferred embodiment, the adjustment box includes a first box body and a second box body, which are fastened together and connected by connecting bolts.

[0020] Compared with existing technologies, the beneficial effects are:

[0021] This utility model has a simple structure and is easy to use. The cam rotates with the ball valve, thereby driving the first swing rod to swing. The first swing rod drives the second swing rod to swing through the connecting rod assembly, thereby realizing the rotation of the rotating column. The rotating column directly drives the rotary valve to rotate through the universal rotation assembly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 yes Figure 1 A partial structural diagram.

[0024] Figure 3 yes Figure 2 A partial structural diagram.

[0025] Figure 4 This is a schematic diagram of the combined structure of the cam, the first swing rod, the connecting rod assembly, and the second swing rod in this utility model.

[0026] Figure 5 This is a schematic diagram of the cam structure in this utility model.

[0027] Figure 6 This is a top view schematic diagram of the ball valve in this utility model.

[0028] Figure 7 This is a schematic diagram of the ball in the ball valve of this utility model.

[0029] Figure 8 This is a top view schematic diagram of the rotary valve in this utility model.

[0030] Reference numerals: 1. Gas pipe; 2. Ball valve; 3. Air inlet pipe; 4. Rotary valve; 5. Adjusting box; 6. First box body; 7. Second box body; 8. Transmission rod; 9. First connector; 10. Second connector; 11. Adjusting hole; 12. Adjusting bolt; 13. Adjusting component; 15. Cam; 16. First swing rod; 17. Roller; 18. Second connecting rod; 19. First connecting rod; 20. Movable hole; 21. Second swing rod; 22. Rotating column; 23. Valve plate; 24. Movable head; 25. Torsion spring; 26. Drive arc segment; 27. First arc segment; 28. Second arc segment; 29. ​​Ball; 30. Through hole; 31. Second mounting hole. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] A pneumatic-pneumatic linkage valve, comprising:

[0033] Gas pipe 1, wherein the gas pipe 1 is equipped with ball valve 2, typically ball valve 2 includes a ball 29 that rotates inside the gas pipe 1, both ends of the ball 29 are mounted inside the gas pipe 1 and rotate via a first rotating shaft, one end of the first rotating shaft extends out of the gas pipe 1 and connects to a handle, and a through hole 30 is provided through the ball 29, the ball 29 is rotated by rotating the handle, thereby connecting the two ends of the gas pipe 1 through the through hole 30 to allow gas to pass through, using existing technical means;

[0034] The air inlet pipe 3 is equipped with a rotary valve 4. The rotary valve 4 typically includes a valve plate 23 that is matched and movable inside the air inlet pipe 3. The two ends of the valve plate 23 are mounted inside the air inlet pipe 3 and rotated through a second rotating shaft. The valve plate 23 is rotated through the second rotating shaft to connect the two ends of the air inlet pipe 3 for ventilation. This adopts existing technical means.

[0035] The regulating box 5 is installed on the gas pipe 1 by screws. The outer wall of the gas pipe 1 is provided with screw holes. The regulating box 5 is provided with a first mounting hole corresponding to the screw holes. The screw passes through the first mounting hole from the inside of the regulating box 5 and is screwed into the screw hole to lock the regulating box 5 on the gas pipe 1.

[0036] The regulating box 5 is provided with a rotating cam 15. The cam 15 is connected to the ball valve 2 and rotates synchronously. The first rotating shaft at one end of the ball 29 in the ball valve 2 is connected to the handle, and the first rotating shaft at the other end is fixedly connected to the first rotating component located outside the gas pipe 1. One end of the first rotating component extends into the regulating box 5. The cam 15 is fixedly installed on the first rotating component. The first rotating shaft, the first rotating component and the cam 15 are coaxially arranged, and the cam 15 rotates with the first rotating shaft.

[0037] The adjustment box 5 is provided with an inclined first swing rod 16. One end of the first swing rod 16 is provided with a driving part that abuts against the edge of the cam 15. The first swing rod 16 is rotatably installed in the adjustment box 5. The first swing rod 16 is driven to swing by the rotation of the cam 15. The adjustment box 5 is also provided with a second swing rod 21. The second swing rod 21 is rotatably installed in the adjustment box 5 by a rotating column 22. The first swing rod 16 drives the second swing rod 21 to swing synchronously through a connecting rod assembly.

[0038] One end of the rotating column 22 extends out of the adjusting box 5 and is provided with a first connector 9. The outer side of the air inlet pipe 3 is provided with a second connector 10 that is connected to the rotary valve 4 and rotates synchronously. The second rotating shaft of the rotary valve 4 extends out of the air inlet pipe 3 and connects to the second connector 10. The first connector 9 and the second connector 10 are connected by a universal rotating assembly. The swinging rod 21 swings and drives the rotating column 22 to rotate, thereby driving the rotary valve 4 to rotate through the first connector 9, the universal rotating assembly, and the second connector 10, thereby realizing the synchronous linkage adjustment of the ball valve 2 and the rotary valve 4, thus enabling the synchronous adjustment of the gas inlet pipe 1 and the air inlet pipe 3.

[0039] The rotating part of the first swing rod 16 is offset from the rotation center of the cam 15, so that the first swing rod 16 can swing outward towards the cam 15, and the swing direction of the first swing rod 16 is arc-shaped. Therefore, when the cam 15 pushes against the drive part to drive the first swing rod 16 to swing, the swing direction of the first swing rod 16 is closer to the direction of the force applied by the cam 15 to the drive part. Thus, the cam 15 can drive the first swing rod 16 more easily, and thus the handle of the ball valve 2 can be turned more easily for adjustment.

[0040] In a preferred embodiment, the linkage assembly includes a first linkage 19 and a second linkage 18. The second linkage 18 is hinged between the first linkage 19 and the first swing rod 16. The first swing rod 16 drives the first linkage 19 to swing via the second linkage 18. One end of the first linkage 19 has a strip-shaped movable hole 20. One end of the second swing rod 21 is fixedly provided with a movable head 24 located within the movable hole 20. The diameter of the movable head 24 is the same as the width of the movable hole 20. The first swing rod 16 drives the first linkage 19 to swing via the second linkage 18. The swing end of the first linkage 19 is connected to one end of the second swing rod 21, thereby driving the second swing rod 21 to swing, causing the rotating column 22 to rotate.

[0041] In a preferred embodiment, the cam 15 has at least one driving arc segment 26 arranged around its edge. The driving arc segment 26 includes a connected first arc segment 27 and a second arc segment 28. Relative to the center of the cam 15, the curvature of the first arc segment 27 is gentler than that of the second arc segment 28. The distance between the end of the first arc segment 27 furthest from the second arc segment 28 and the center of the cam 15 is L1; the distance between the connection point of the first arc segment 27 and the second arc segment 28 and the center of the cam 15 is L2; ​​and the distance between the end of the second arc segment 28 furthest from the first arc segment 27 and the center of the cam 15 is L3. The design of the driving arc segment is based on the design of the adjusting cam in the utility model patent with patent number "CN220958531U".

[0042] For the above, L1>L2. Due to the characteristics of ball valve 2, the through hole 30 on ball 29 will gradually open to supply air after the handle of ball valve 2 is rotated at a certain angle. Therefore, initially, the rotation of the handle causes the drive part to move on the first arc segment 27. Only when L1>L2 can the first swing rod 16 not swing in the direction of opening the rotary valve 4. Thus, at the beginning stage of the handle rotation, the rotary valve 4 will not open. Furthermore, the initial position of the drive part on the first arc segment 27 is close to the connection between the first arc segment 27 and the second arc segment 28. The distance that the drive part needs to move on the first arc segment 27 is only a small segment.

[0043] When L3>L2, and the handle of ball valve 2 is rotated to the point where the drive unit moves to the connection between the first arc segment 27 and the second arc segment 28, the through hole 30 on the ball 29 of ball valve 2 begins to open. As the increment of the opening of the through hole 30 of ball 29 gradually increases, L3>L2, and the movement of the drive unit on the second arc segment 28 gradually accelerates, causing the increment of the swing angle of the first swing rod 16 to accelerate, thereby rapidly opening the rotary valve 4.

[0044] In a preferred embodiment, a torsion spring 25 is fitted on the rotating column 22. The two ends of the torsion spring 25 are connected to the first connector 9 and the adjustment box 5, respectively. The elastic force of the torsion spring 25 is always in the opposite direction to the rotation of the rotating column 22 when the ball valve 2 and the rotary valve 4 are opened, so that the driving part on the first swing rod 16 is always pressed against the edge of the cam 15.

[0045] In a preferred embodiment, the universal rotating assembly includes a transmission rod 8, one end of which is connected to a first connector 9 via a universal joint, and the other end of which is connected to a second connector 10 via a universal joint.

[0046] In a preferred embodiment, the through-hole 30 on the ball 29 inside the ball valve 2 is rectangular, with one diagonal of the through-hole 30 located on the projection of the rotation path of the ball 29. Therefore, when the ball valve 2 is opened, a sharp corner of the through-hole 30 is exposed first. Compared to a traditional circular through-hole 30, the initial flow rate of this design is smaller, thus preventing excessive initial gas intake from the gas pipe 1 and incomplete combustion.

[0047] In a preferred embodiment, the drive unit includes a roller 17 rotatably mounted on the first swing arm 16, the roller 17 rolling against the edge of the cam 15.

[0048] In a preferred embodiment, the adjusting box 5 is provided with an adjusting member 13. The two ends of the adjusting member 13 slide against the adjusting box 5, allowing the adjusting member 13 to rotate within the adjusting box 5. The rotation direction of the adjusting member 13 is consistent with the rotation direction of the cam 15. The first swing rod 16 is rotatably mounted on the adjusting member 13. Two adjusting holes 11 are provided on the side wall of the adjusting box 5, corresponding to the two ends of the adjusting member 13 respectively. The adjusting holes 11 are arranged in a strip shape. An adjusting bolt 12 passes through the adjusting hole 11. The screw of the adjusting bolt 12 is screwed to the end of the adjusting member 13, and the head of the adjusting bolt 12 is locked against the outer wall of the adjusting box 5. Tighten the adjusting bolt 12 to fix the adjusting component 13 onto the adjusting box 5. Loosening the adjusting bolt 12 allows the adjusting component 13 to rotate. Since the first swing rod 16 is mounted on the adjusting component 13, the rotation of the adjusting component 13 can change the inclination of the first swing rod 16. Thus, when the cam 15 rotates by the same angle, the swing angle of the first swing rod 16 changes. For example, when the cam 15 rotates by 5°, the first swing rod 16 swings by 3°. When the adjusting component 13 rotates and changes the inclination of the first swing rod 16, the cam 15 rotates by 5° and the first swing rod 16 swings by 5°. This allows the ball valve 2 to rotate by the same angle, and the corresponding rotation angle of the rotary valve 4 to change, thereby changing the ratio of air intake to air intake and adjusting the combustion effect of the flame.

[0049] In a preferred embodiment, the adjustment box 5 includes a first box body 6 and a second box body 7. The first box body 6 and the second box body 7 are fastened together and connected by connecting bolts. The second box body 7 is fastened to the outside of the first box body 6. A second mounting hole 31 is provided on the side wall of the second box body 7. A screw passes through the second mounting hole 31 from the outside and is screwed to the side wall of the first box body 6, thereby locking the first box body 6 and the second box body 7.

[0050] During installation, the adjusting component 13, the first swing rod 16, and the connecting rod assembly are included.

[0051] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component 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.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A pneumatic-pneumatic linkage valve, characterized in that, include: Gas pipe (1), wherein the gas pipe (1) is equipped with a ball valve (2); An air inlet pipe (3) is provided with a rotary valve (4); A regulating box (5) is installed on the gas pipe (1). A rotating cam (15) is provided inside the regulating box (5). The cam (15) is connected to the ball valve (2) and rotates synchronously. An inclined first swing rod (16) is provided inside the regulating box (5). One end of the first swing rod (16) has a driving part that abuts against the edge of the cam (15). The first swing rod (16) is rotatably installed inside the regulating box (5). A second swing rod (21) is also provided inside the regulating box (5). The second swing rod (21) is rotatably mounted in the adjustment box (5) via the rotating column (22). The first swing rod (16) drives the second swing rod (21) to swing synchronously via the connecting rod assembly. One end of the rotating column (22) extends out of the adjustment box (5) and is provided with a first connector (9). The outer side of the air inlet pipe (3) is provided with a second connector (10) that is connected to the rotary valve (4) and rotates synchronously. The first connector (9) and the second connector (10) are connected by a universal rotating assembly.

2. The air-pneumatic linkage valve as described in claim 1, characterized in that, The linkage assembly includes a first link (19) and a second link (18). The second link (18) is hinged between the first link (19) and the first swing rod (16). The first swing rod (16) drives the first link (19) to rotate through the second link (18). One end of the first link (19) is provided with a strip-shaped movable hole (20). One end of the second swing rod (21) is fixedly provided with a movable head (24) located in the movable hole (20). The diameter of the movable head (24) is the same as the width of the movable hole (20).

3. The air-pneumatic linkage valve as described in claim 1, characterized in that, The edge of the cam (15) is provided with at least one driving arc segment (26) around a circle, the driving arc segment (26) including a first arc segment (27) and a second arc segment (28) connected together.

4. The pneumatic-pneumatic linkage valve as described in claim 1, characterized in that, A torsion spring (25) is fitted on the rotating column (22), and the two ends of the torsion spring (25) are respectively connected to the first connector (9) and the adjusting box (5).

5. The pneumatic-pneumatic linkage valve as described in claim 1, characterized in that, The universal rotating assembly includes a transmission rod (8), one end of which is connected to a first connector (9) via a universal joint, and the other end of which is connected to a second connector (10) via a universal joint.

6. The air-pneumatic linkage valve as described in claim 1, characterized in that, The through hole (30) on the ball (29) inside the ball valve (2) is rectangular, and one of the diagonals of the through hole (30) is located on the projection of the rotation path of the ball (29).

7. The air-pneumatic linkage valve as described in claim 1, characterized in that, The drive unit includes a roller (17) rotatably mounted on a first swing arm (16), the roller (17) rolling against the edge of a cam (15).

8. The air-pneumatic linkage valve as described in claim 1, characterized in that, The adjustment box (5) is provided with an adjustment component (13). The two ends of the adjustment component (13) slide against the adjustment box (5). The side wall of the adjustment box (5) is provided with two adjustment holes (11) corresponding to the two ends of the adjustment component (13). The adjustment holes (11) are arranged in a strip shape. An adjustment bolt (12) passes through the adjustment hole (11). The screw of the adjustment bolt (12) is screwed to the end of the adjustment component (13). The head of the adjustment bolt (12) is locked against the outer wall of the adjustment box (5).

9. The air-pneumatic linkage valve as described in claim 1, characterized in that, The adjustment box (5) includes a first box body (6) and a second box body (7), which are fastened together and connected by connecting bolts.

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