Air-gas linkage valve mechanism for commercial gas stove

Abstract

The utility model discloses an air-gas linkage valve mechanism for a commercial gas stove, which comprises an air inlet pipe and an air inlet pipe, the air inlet pipe is provided with a ball valve, the air inlet pipe is provided with a rotating valve, a rotating shaft of the ball valve is connected with a rotating shaft of the rotating valve through a linkage mechanism, and the linkage mechanism comprises a first module mechanism, a second module mechanism and a rotating transmission part; the first module mechanism comprises a bottom box, the bottom box is installed on the air inlet pipe, and a cam connected with the rotating shaft through a first rotating shaft is arranged in the bottom box; the second module mechanism comprises an outer box covering the bottom box, a support is fixedly arranged in the outer box, a sliding piece is arranged on the support, a rolling wheel which abuts against the edge of the cam to roll is installed at one end of the sliding piece, a rotating wheel is rotationally installed in the outer box, a second rotating shaft of the rotating wheel extends out of the outer box, and a shifting column for shifting the rotating wheel to rotate is arranged on the sliding piece in a protruding mode. The second rotating shaft is sleeved with a torsional spring. One end of the second rotating shaft extending out of the outer box is connected with a rotating shaft of the rotating valve through a rotating transmission part.

Description

Technical Field

[0001] The utility model relates to the technical field of gas stove valves, in particular to an air-gas linkage valve mechanism for commercial gas stoves. Background Art

[0002] Commercial gas stoves are mostly used in restaurants. Generally, commercial gas stoves have air intake ducts and air intake ducts. Since the air intake duct requires high sealing performance, a ball valve is used to control the switch and adjust the size. The sealing requirements for the air intake duct are not high and considering the cost issue, a simple rotary valve is often used to control the switch and adjust the size.

[0003] During use, for sufficient combustion, the intake air volume and the air intake volume need to be matched. Therefore, when adjusting the ball valve in the air intake duct, the rotary valve in the air intake duct also needs to be adjusted simultaneously. And for ease of use, the ball valve in the air intake duct and the rotary valve in the air intake duct need to be linked, so that only one valve needs to be controlled.

[0004] In the prior art, the patent number is "CN220958531 The "U" records in "A gas furnace gas volume and air volume regulating device using a cam": it includes an air inlet pipe equipped with a ball valve and an air inlet pipe equipped with a rotary valve, the ball valve is connected to a wrench I through a rotating shaft I, the rotary valve is connected to a rotating part through a rotating shaft II, the wrench I and the rotating part are linked by a connecting mechanism, the connecting mechanism includes an adjusting cam, the mounting portion of the adjusting cam is mounted on the rotating shaft I, one side of the adjusting cam has a continuously arranged arc portion I, arc portion II and arc portion III, the rotation center of the rotating shaft I, the center of the mounting portion, the arc portion I and the center of the arc portion III overlap, the radius of the arc portion I is smaller than the radius of the arc portion III, the arc portion II connects the arc portion I and the arc portion III, the rotating rod is located on the side where the adjusting cam has three arc portions, one end of the rotating rod is rotatably mounted on the air inlet pipe, the rotating rod is provided with an abutting portion, in the initial state, the abutting portion abuts on the arc portion I, and the other end of the rotating rod is connected to the rotating part through a linkage member. Only the ball valve needs to be adjusted to drive the rotary valve to be adjusted synchronously.

[0005] However, in the above patent, each part is provided separately and needs to be assembled one by one on site, which is troublesome and time-consuming, and each part is exposed. Utility Model Content

[0006] In order to solve the above-mentioned deficiencies in the prior art, the present invention proposes an air-gas linkage valve mechanism for a commercial gas stove.

[0007] In order to achieve the above technical effects, the present invention adopts the following solutions:

[0008] A wind-air linkage valve mechanism for a commercial gas stove includes an air inlet pipe and an air inlet pipe, wherein a ball valve is mounted on the air inlet pipe, and a rotary valve is mounted on the air inlet pipe. The rotating shaft of the ball valve and the rotating shaft of the rotary valve are connected via a linkage mechanism, wherein the linkage mechanism includes a first module mechanism, a second module mechanism, and a rotary transmission member.

[0009] The first module mechanism includes a bottom box, which is fixedly mounted on the air intake pipe. A first rotating shaft fixedly connected to the rotating shaft of the ball valve is provided in the bottom box. The first rotating shaft is coaxially arranged with the rotating shaft, and a cam is fixedly mounted on the first rotating shaft.

[0010] The second module mechanism includes an outer box covering the bottom box and fixedly connected to the bottom box, a bracket fixedly provided in the outer box, a sliding plate provided on the bracket, the sliding plate being arranged parallel to the cam surface, a roller rolling against the edge of the cam being installed at one end of the sliding plate, a rotating wheel rotatably installed in the outer box, a second rotating shaft of the rotating wheel extending out of the outer box, a toggle post protruding from the sliding plate for toggling the rotating wheel, and a torsion spring sleeved on the second rotating shaft;

[0011] One end of the second rotating shaft extending out of the outer box is connected to the rotating shaft of the rotary valve via a rotating transmission member.

[0012] A preferred technical solution is that a driving portion is provided on the edge of the cam, and the driving portion includes a first arc portion and a third arc portion located at both ends, the first arc portion and the third arc portion are connected by a second arc portion, and the second arc portion protrudes outward relative to the first arc portion and the third arc portion, and the roller rests on the driving portion and rolls along the driving portion.

[0013] According to a preferred technical solution, two driving parts are provided on the edge of the cam, and the two driving parts are respectively located on both sides of the rotation center of the cam.

[0014] According to a preferred technical solution, the projection of the length direction of the slide on the cam passes through the rotation center of the cam, the slide slides along its length direction, and the roller is provided at one end of the slide in the length direction.

[0015] According to a preferred technical solution, a first gear is also rotatably provided in the outer box, a movable strip hole extending along the radial direction is opened on the first gear, the shift column is inserted into the movable strip hole, and a convex tooth is provided on the edge of the rotating wheel, which is driven to rotate by the first gear.

[0016] According to a preferred technical solution, a second rotating gear and a third gear are further provided in the outer box, the second gear is meshed with the first gear, the third gear is fixed on the side of the second gear away from the cam, the third gear is coaxially arranged with the second gear, and the third gear is meshed with the convex teeth of the rotating wheel.

[0017] According to a preferred technical solution, the two ends of the bracket rest against the inner wall of the outer box, and two adjustment strip holes are provided on the side wall of the outer box. The adjustment strip holes are arranged along the circumference of the outer box, and the two adjustment strip holes correspond to the two ends of the bracket respectively. Bolts that are screwed to the bracket pass through the adjustment strip holes, and the screw heads of the bolts rest against the outer wall of the outer box.

[0018] According to a preferred technical solution, the rotating transmission member is a flexible shaft, and both ends of the flexible shaft are respectively connected to the end surface centers of the rotating shaft and the second rotating shaft.

[0019] According to a preferred technical solution, a guide slide matching the slide is provided on the bracket, and the slide is mounted on the guide slide to slide.

[0020] According to a preferred technical solution, the outer box is buckled onto the outer wall of the base box, a mounting hole is provided on the side wall of the outer box, and a screw is passed through the mounting hole to be screwed to the outer wall of the base box.

[0021] Compared with the prior art, the beneficial effects are:

[0022] The utility model has a simple structure and is easy to use. When the ball valve of the air intake pipe is adjusted, the rotation of the ball valve drives the cam to rotate through the first rotating shaft, so that the roller resting on the edge of the cam rolls on the edge of the cam and then drives the slide to slide. When the slide slides, the rotating wheel is toggled by the toggle column, so that the rotating wheel follows the rotation, and then the second rotating shaft of the rotating wheel drives the rotating shaft of the rotary valve to rotate through the rotating transmission member, so as to adjust the rotary valve synchronously. In the utility model, the first module mechanism and the second module mechanism can be pre-assembled. During installation, the first module mechanism is installed on the air intake pipe, and the second module mechanism is installed on the first module mechanism. Then, the second rotating shaft and the rotating shaft are connected through the rotating transmission member, which simplifies the on-site installation. In addition, each part is located in the accommodating space formed by the bottom box and the outer box and will not be exposed to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a partial structural diagram of the utility model;

[0025] Figure 3 This is a schematic diagram of the connection structure between the first module mechanism and the air intake pipe in the utility model;

[0026] Figure 4 This is a schematic diagram of the cam structure in the utility model;

[0027] Figure 5This is a schematic diagram of the second module structure of the utility model;

[0028] Figure 6 This is a schematic diagram of the connection structure between the bracket and the cam in the utility model;

[0029] Figure 7 This is a schematic diagram of the structure of the second module mechanism in the present utility model;

[0030] Figure 8 This is a schematic diagram of the combination of the second module mechanism and the cam in the utility model;

[0031] Figure 9 yes Figure 8 Another perspective structural diagram;

[0032] Figure 10 yes Figure 9 Another perspective structural diagram.

[0033] Figure numerals: 1. air intake pipe; 2. air intake pipe; 3. ball valve; 4. rotary valve; 5. rotating shaft; 6. first module mechanism; 7. second module mechanism; 8. flexible shaft; 9. bottom box; 10. outer box; 11. cam; 12. driving part; 13. first circular arc part; 14. second circular arc part; 15. third circular arc part; 16. bracket; 17. slide; 18. roller; 19. guide slide; 20. toggle column; 21. adjusting strip hole; 22. bolt; 23. first gear; 24. movable strip hole; 25. second gear; 26. third gear; 27. first rotating shaft; 28. second rotating shaft; 29. rotating wheel; 30. torsion spring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] A wind-air linkage valve mechanism for a commercial gas stove includes an air inlet pipe 1 and an air inlet pipe 2. A ball valve 3 is installed on the air inlet pipe 1, and a rotary valve 4 is installed on the air inlet pipe 2. The rotating shaft of the ball valve 3 is connected to the rotating shaft 5 of the rotary valve 4 through a linkage mechanism. The above adopts existing technology.

[0036] The linkage mechanism includes a first module mechanism 6, a second module mechanism 7 and a rotating transmission member;

[0037] The first module mechanism 6 includes a bottom box 9, one side of which is fixedly mounted on the intake pipe 1, and the other side of the bottom box 9 is open. A first rotating shaft 27 fixedly connected to the rotating shaft of the ball valve 3 is provided in the bottom box 9. One end of the rotating shaft of the ball valve 3 extends out of the intake pipe 1 and is connected to the first rotating shaft 27. The first rotating shaft 27 is coaxially arranged with the rotating shaft. A cam 11 is fixedly mounted on the first rotating shaft 27. The cam 11 adopts the structure of the cam 11 in the utility model with patent number "CN220958531 U";

[0038] The second module mechanism 7 includes an outer box 10 covering the bottom box 9 and fixedly connected to the bottom box 9. The outer box 10 is located on a side of the bottom box 9 away from the air intake pipe 1. One end of the opening of the outer box 10 faces the bottom box 9. The opening size of the outer box 10 is larger than the outer diameter of the bottom box 9. The outer box 10 is buckled on the bottom box 9.

[0039] A bracket 16 is fixedly provided inside the outer box 10. The bracket 16 is fixed to the outer box 10 and does not move. The bracket 16 is located on the side of the cam 11 away from the intake pipe 1. A sliding vane 17 is provided on the bracket 16. The sliding vane 17 is located on the side of the bracket 16 away from the cam 11. The sliding vane 17 is arranged parallel to the surface of the cam 11. A roller 18 is installed on one end of the sliding vane 17 and rolls against the edge of the cam 11.

[0040] A rotating wheel 29 is rotatably mounted in the outer box 10. The rotating wheel 29 is located on the side of the slide 17 away from the cam 11. A second rotating shaft 28 is fixedly connected to the center of the rotating wheel 29. The second rotating shaft 28 is rotatably mounted on the outer box 10 and extends out of the outer box 10. A toggle post 20 is protruded from the slide 17 for toggling the rotating wheel 29. A torsion spring 30 is sleeved on the second rotating shaft 28. One end of the torsion spring 30 is fixedly connected to the rotating wheel 29, and the other end of the torsion spring 30 is fixedly connected to the inner wall of the outer box 10.

[0041] One end of the second rotating shaft 28 extending out of the outer box 10 is connected to the rotating shaft 5 of the rotary valve 4 via a rotating transmission member.

[0042] When adjusting the ball valve 3 of the intake pipe 1, the rotation of the ball valve 3 drives the cam 11 to rotate through the first rotating shaft 27, so that the roller 18 resting on the edge of the cam 11 floats and rolls on the edge of the cam 11, thereby driving the slide 17 to slide. When the slide 17 slides, the rotating wheel 29 is toggled through the toggle column 20, so that the rotating wheel 29 rotates accordingly, and then the second rotating shaft 28 of the rotating wheel 29 drives the rotating shaft 5 of the rotary valve 4 to rotate through the rotating transmission member, thereby synchronously adjusting the rotary valve 4; in the present utility model, the first module mechanism 6 and the second module mechanism 7 can be pre-assembled. During installation, the first module mechanism 6 is installed on the intake pipe 1, and the second module mechanism 7 is installed on the first module mechanism 6. Then, the second rotating shaft 28 is connected to the rotating shaft 5 through the rotating transmission member, which simplifies the on-site installation, and the various parts are located in the accommodation space formed by the bottom box 9 and the outer box 10 and will not be exposed to the outside.

[0043] A preferred technical solution is that a driving portion 12 is provided on the edge of the cam 11, and the driving portion 12 includes a first arc portion 13 and a third arc portion 15 located at both ends, and the first arc portion 13 and the third arc portion 15 are connected by a second arc portion 14, and the second arc portion 14 protrudes outward relative to the first arc portion 13 and the third arc portion 15, and the roller 18 rests on the driving portion 12 and rolls along the driving portion 12.

[0044] Since the second arc portion 14 is protruding, when the roller 18 rolls from the first arc portion 13 to the second arc portion 14 and along the second arc portion 14 , it drives the sliding piece 17 to slide outward.

[0045] According to a preferred technical solution, two driving parts 12 are provided on the edge of the cam 11 . The two driving parts 12 are respectively located on both sides of the rotation center of the cam 11 , and the protrusion degrees of the arcs on the two driving parts 12 are different.

[0046] In practice, the proportions of natural gas and coal gas with air are different, so the protrusion degrees of the arcs on the two driving parts 12 are different, thereby achieving different opening angles of the rotary valve 4. Setting two different driving parts 12 can adapt to natural gas and coal gas.

[0047] In a preferred technical solution, the projection of the length direction of the slide 17 on the cam 11 passes through the rotation center of the cam 11 , the slide 17 slides along its length direction, and the roller 18 is provided at one end of the slide 17 in the length direction.

[0048] According to a preferred technical solution, a first gear 23 is also rotatably provided in the outer box 10. A movable strip hole 24 extending along the radial direction is opened on the first gear 23. The driving column 20 is inserted into the movable strip hole 24. The edge of the rotating wheel 29 is provided with convex teeth, and the rotating wheel 29 is driven to rotate by the first gear 23.

[0049] The toggle post 20 on the slide 17 is inserted into the movable bar hole 24. When the slide 17 slides, the toggle post 20 drives the first gear 23 to rotate, and the first gear 23 drives the rotating wheel 29 to rotate, so that the second rotating shaft 28 on the rotating wheel 29 drives the rotating shaft 5 to rotate through the rotating transmission member.

[0050] According to a preferred technical solution, a rotating second gear 25 and a third gear 26 are further provided in the outer box 10. The second gear 25 is meshed with the first gear 23, and the third gear 26 is fixed on the side of the second gear 25 away from the cam 11. The third gear 26 is coaxially arranged with the second gear 25, and the third gear 26 is meshed with the convex teeth of the rotating wheel 29.

[0051] The first gear 23 drives the second gear 25 to rotate, and the second gear 25 is coaxially fixed with the third gear 26, so that the third gear 26 rotates and drives the rotating wheel 29 to rotate. Through this structure, the rotating wheel 29 can be installed in the center of the outer box 10 while reducing the size of the outer box 10 as much as possible.

[0052] The preferred technical solution is that the two ends of the bracket 16 are against the inner wall of the outer box 10, and two adjustment strip holes 21 are opened on the side wall of the outer box 10. The adjustment strip holes 21 are arranged along the circumference of the outer box 10. The two adjustment strip holes 21 correspond to the two ends of the bracket 16 respectively. A bolt 22 screwed to the bracket 16 passes through the adjustment strip hole 21, and the screw head of the bolt 22 is against the outer wall of the outer box 10.

[0053] After loosening the bolt 22 , the position of the bracket 16 can be rotated to adjust the position.

[0054] In a preferred technical solution, the rotating transmission member is a flexible shaft 8 , and both ends of the flexible shaft 8 are respectively connected to the end surface centers of the rotating shaft 5 and the second rotating shaft 28 .

[0055] According to a preferred technical solution, a guide slide 19 matching the slide 17 is provided on the bracket 16 , and the slide 17 is mounted on the guide slide 19 to slide.

[0056] The slide is used to guide the sliding of the slide 17 and to limit and guide the sliding direction.

[0057] The preferred technical solution is that the outer box 10 is buckled on the outer wall of the bottom box 9, the inner wall of the outer box 10 is attached to the outer wall of the bottom box 9, and a mounting hole is opened on the side wall of the outer box 10, and a screw that is screwed to the outer wall of the bottom box 9 passes through the mounting hole.

[0058] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present utility model.

[0059] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0060] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A wind-air linkage valve mechanism for a commercial gas stove, comprising an air inlet pipe (1) and an air inlet pipe (2), wherein a ball valve (3) is mounted on the air inlet pipe (1), and a rotary valve (4) is mounted on the air inlet pipe (2), wherein a rotating shaft of the ball valve (3) and a rotating shaft (5) of the rotary valve (4) are connected via a linkage mechanism, characterized in that: The linkage mechanism comprises a first module mechanism (6), a second module mechanism (7) and a rotating transmission member; The first module mechanism (6) includes a bottom box (9), the bottom box (9) is fixedly mounted on the air intake pipe (1), a first rotating shaft (27) fixedly connected to the rotating shaft of the ball valve (3) is provided in the bottom box (9), the first rotating shaft (27) is coaxially arranged with the rotating shaft, and a cam (11) is fixedly mounted on the first rotating shaft (27); The second module mechanism (7) includes an outer box (10) which is covered on the bottom box (9) and fixedly connected to the bottom box (9); a bracket (16) is fixedly provided in the outer box (10); a sliding slide (17) is provided on the bracket (16); the slide (17) is arranged parallel to the surface of the cam (11); a roller (18) is installed at one end of the slide (17) and rolls against the edge of the cam (11); a rotating wheel (29) is rotatably installed in the outer box (10); a second rotating shaft (28) of the rotating wheel (29) extends out of the outer box (10); a toggle column (20) is protruded on the slide (17) for toggle the rotating wheel (29) to rotate; a torsion spring (30) is sleeved on the second rotating shaft (28); One end of the second rotating shaft (28) extending out of the outer box (10) is connected to the rotating shaft (5) of the rotary valve (4) via a rotating transmission member.

2. The air-gas linkage valve mechanism for a commercial gas stove according to claim 1, characterized in that: A driving portion (12) is provided on the edge of the cam (11), and the driving portion (12) includes a first arc portion (13) and a third arc portion (15) located at both ends. The first arc portion (13) and the third arc portion (15) are connected by a second arc portion (14), and the second arc portion (14) protrudes outward relative to the first arc portion (13) and the third arc portion (15). The roller (18) abuts against the driving portion (12) and rolls along the driving portion (12).

3. The air-gas linkage valve mechanism for a commercial gas stove according to claim 2, characterized in that: Two driving parts (12) are provided on the edge of the cam (11), and the two driving parts (12) are respectively located on both sides of the rotation center of the cam (11).

4. The air-gas linkage valve mechanism for a commercial gas stove according to claim 1, characterized in that: The projection of the length direction of the slide (17) on the cam (11) passes through the rotation center of the cam (11), and the slide (17) slides along its length direction. The roller (18) is arranged at one end of the slide (17) in the length direction.

5. The air-gas linkage valve mechanism for a commercial gas stove according to claim 1, characterized in that: A first gear (23) is rotatably provided in the outer box (10). A movable strip hole (24) extending along a radial direction is provided on the first gear (23). The shifting column (20) is inserted into the movable strip hole (24). The edge of the rotating wheel (29) is provided with convex teeth, and the rotating wheel (29) is driven to rotate by the first gear (23).

6. The air-gas linkage valve mechanism for a commercial gas stove according to claim 2, characterized in that: A second gear (25) and a third gear (26) are further provided in the outer box (10). The second gear (25) is meshedly connected with the first gear (23). The third gear (26) is fixedly arranged on a side of the second gear (25) away from the cam (11). The third gear (26) is coaxially arranged with the second gear (25). The third gear (26) is meshedly connected with the convex teeth of the rotating wheel (29).

7. The air-gas linkage valve mechanism for a commercial gas stove according to claim 1, characterized in that: The two ends of the bracket (16) are against the inner wall of the outer box (10), and two adjusting strip holes (21) are opened on the side wall of the outer box (10). The adjusting strip holes (21) are arranged along the circumference of the outer box (10). The two adjusting strip holes (21) correspond to the two ends of the bracket (16) respectively. A bolt (22) screwed to the bracket (16) passes through the adjusting strip holes (21), and the screw head of the bolt (22) is against the outer wall of the outer box (10).

8. The air-gas linkage valve mechanism for a commercial gas stove according to claim 1, characterized in that: The rotating transmission member is a flexible shaft (8), and the two ends of the flexible shaft (8) are respectively connected to the end surface centers of the rotating shaft (5) and the second rotating shaft (28).

9. The air-gas linkage valve mechanism for a commercial gas stove according to claim 1, characterized in that: The bracket (16) is provided with a guide slideway (19) matched with the slide (17), and the slide (17) is installed on the guide slideway (19) to slide.

10. The air-gas linkage valve mechanism for a commercial gas stove according to claim 1, characterized in that: The outer box (10) is buckled on the outer wall of the bottom box (9), and a mounting hole is opened on the side wall of the outer box (10), and a screw that is screwed to the outer wall of the bottom box (9) passes through the mounting hole.

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