Double-gas fuel gas foot switch

By designing a dual-gas foot switch, the problem of not being able to control gas and combustion-supporting gas simultaneously in existing technologies has been solved, achieving efficient resource utilization and reducing the risk of gas leakage.

CN223953437UActive Publication Date: 2026-02-27KUNSHAN CINREPUSI ELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202520685162.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-12
Publication Date
2026-02-27
Estimated Expiration
2035-04-12

AI Technical Summary

Technical Problem

Existing gas foot switches can only control the on/off of gas, but cannot control combustion-supporting gases, leading to resource waste and increased risk of gas leaks.

Method used

Design a dual-gas foot switch. By arranging two valve assemblies side by side on the base, one for gas and one for combustion-supporting gas, the simultaneous supply and cut-off of gas and combustion-supporting gas can be achieved by the cooperation of the valve stem and valve orifice. The design of the valve orifice and gas outlet reduces the risk of leakage.

Benefits of technology

It enables the simultaneous supply and cut-off of natural gas and combustion-supporting gas, reducing resource waste and lowering the risk of gas leaks.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of fuel gas equipment, and discloses a double-gas fuel gas foot switch which comprises a base, an upper cover, a pedal and a switch spring, two valve assemblies are arranged on the base side by side, each valve assembly comprises a valve body fixedly arranged on the base, the rear side face of each valve body is inwards provided with a gas inlet and a gas outlet, and the top face of each valve body is downwards provided with a valve hole; an air inlet hole communicating the air inlet with the valve hole and an air outlet hole communicating the air outlet with the valve hole are formed in the valve body, a baffle is arranged at the bottom of the valve hole, a valve rod is vertically arranged in the valve hole in a sliding mode, a reset spring is arranged between the valve rod and the baffle, and the top end of the valve rod penetrates through the valve body, protrudes upwards and is arranged close to the bottom face of the pedal. By arranging the two valve assemblies, gas and combustion-supporting gas are supplied at the same time and cut off at the same time, and resource waste is reduced; only one gas inlet and one gas outlet are formed in the valve body, the gas inlet and the gas outlet are communicated or blocked through cooperation of the valve rod and the valve hole, and the risk of gas leakage is reduced.
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Description

TECHNICAL FIELD

[0001] The utility model relates to gas equipment technical field, especially a double gas gas foot switch. BACKGROUND

[0002] The gas foot switch is a kind of switch device for controlling the on-off of gas equipment when using.The gas foot switch generally includes base, upper cover, foot pedal, switch spring, valve and the like, but only one valve is arranged in the existing gas foot switch, and only the on-off of gas can be controlled, and the combustion-supporting gas cannot be controlled, so the combustion-supporting gas needs to be kept open state all the time when the gas equipment is used, causing resource waste.In addition, two gas outlets are arranged on the valve of the existing gas foot switch, which can increase the risk of gas leakage. SUMMARY

[0003] To solve the above problems, the utility model provides a double gas gas foot switch.

[0004] The above technical purpose of the utility model is realized by the following technical scheme: a double gas gas foot switch, including base and the upper cover being set on the base, the upper cover rear side is hingedly arranged with the pedal extending forward, the base and the pedal are provided with switch spring, the base is provided with two valve assemblies side by side, the valve assembly includes the valve body being fixedly arranged on the base, the valve body rear side is inwards opened with air inlet and gas outlet, the valve body top surface is downwards opened with valve hole, the valve body is opened with the air inlet and the valve hole communication air hole and the outlet and the valve hole communication gas hole, the valve hole bottom is provided with baffle, the valve hole is vertically slidably provided with valve rod, the valve rod bottom and baffle are provided with return spring, the valve rod top end is upwards protruding and is arranged close to the pedal bottom surface, the pedal is pressed down valve rod and makes valve rod downwards movement and connects air hole and gas hole.

[0005] By adopting the above technical scheme, two valve assemblies are arranged side by side on the base, one is used for connecting gas, and the other is used for connecting combustion-supporting gas, so that two valve assemblies can be controlled simultaneously by one pedal, the simultaneous supply and cut-off of gas and combustion-supporting gas are realized, and resource waste is reduced;Only one air inlet and one gas outlet are arranged on the valve body, and the air hole and the gas hole are connected or blocked by the cooperation of the valve rod and the valve hole, so as to reduce the risk of gas leakage.

[0006] Further, the valve hole is sequentially divided into a first hole section, a second hole section, a third hole section and a fourth hole section from top to bottom, the hole diameters of the first hole section, the second hole section, the third hole section and the fourth hole section are sequentially increased, the first hole section and the second hole section, the second hole section and the third hole section are tapered transitions, the third hole section and the fourth hole section are stepped transitions, the air inlet hole is communicated with the second hole section, and the air outlet hole is communicated with the first hole section.

[0007] By adopting the technical scheme, the valve hole is provided with four hole sections with sequentially increased hole diameters, thereby facilitating cooperation with the valve rod.

[0008] Further, the valve rod is sequentially divided into a first rod section, a second rod section, a third rod section and a fourth rod section from top to bottom, the outer diameter of the first rod section is smaller than the hole diameter of the first hole section, the outer diameter of the third rod section is greater than the hole diameter of the first hole section and smaller than the hole diameter of the second hole section, the outer diameter of the fourth rod section is greater than the hole diameter of the second hole section and smaller than the hole diameter of the third hole section, the outer diameter of the second rod section is smaller than the outer diameter of the first rod section, annular grooves are arranged at the lower part of the first rod section, the upper part of the third rod section and the upper part of the fourth rod section, and O-shaped sealing rings are arranged in the annular grooves, and the two sides of the O-shaped sealing rings are in sealing contact with the groove bottoms and the hole walls of the valve hole.

[0009] By adopting the technical scheme, the valve rod is provided with four rod sections and is correspondingly matched with the four hole sections of the valve hole, and the sealing of the valve hole is realized through the arrangement of the annular grooves and the O-shaped sealing rings.

[0010] Further, the second rod section and the third rod section are connected through a tapered rod section.

[0011] By adopting the technical scheme, the tapered rod section can be used to control the size of the communication area between the valve hole and the air inlet hole, thereby controlling the gas flow.

[0012] Further, a limiting hole is arranged upward at the bottom of the valve rod, a limiting column is protrudingly arranged on the baffle, one end of the return spring is sleeved on the limiting column, and the other end is located in the limiting hole.

[0013] By adopting the technical scheme, the limiting hole and the limiting column are arranged, the return spring is limited, the return spring always ensures a vertical posture, and the probability of bending deformation of the return spring is effectively reduced.

[0014] In conclusion, the utility model has the following beneficial effects: in the application, two valve assemblies are arranged side by side on the base, one is used for connecting fuel gas, and the other is used for connecting combustion-supporting gas, so that the two valve assemblies can be controlled simultaneously by one pedal, the simultaneous supply and simultaneous cut-off of the fuel gas and the combustion-supporting gas are realized, and resource waste is reduced; only one gas inlet and one gas outlet are arranged on the valve body, the gas inlet hole and the gas outlet hole are communicated or blocked by the cooperation of the valve rod and the valve hole, and the risk of fuel gas leakage is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the whole structure schematic diagram of the embodiment of the utility model;

[0016] Figure 2 is the structure schematic diagram of another angle of the embodiment of the utility model;

[0017] Figure 3 is the whole structure schematic diagram of the valve assembly of the embodiment of the utility model;

[0018] Figure 4 is the double-section structure schematic diagram of the valve assembly of the embodiment of the utility model;

[0019] Figure 5 is the cross section structure schematic diagram of the valve assembly of the embodiment of the utility model;

[0020] Figure 6 is the cross section structure schematic diagram of the valve body of the embodiment of the utility model;

[0021] Figure 7 the structure schematic diagram of the valve rod of the embodiment of the utility model.

[0022] In the drawing: 1, base; 2, upper cover; 3, pedal; 4, switch spring; 5, valve assembly; 10, valve body; 11, gas inlet; 12, gas outlet; 13, gas inlet hole; 14, gas outlet hole; 15, baffle; 16, reset spring; 17, limiting column; 20, valve hole; 21, first hole section; 22, second hole section; 23, third hole section; 24, fourth hole section; 30, valve rod; 31, first rod section; 32, second rod section; 33, third rod section; 34, fourth rod section; 35, annular groove; 36, O-shaped sealing ring; 37, tapered rod section; 38, limiting hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application; obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments; based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the application.

[0024] As Figures 1-7 shown, the embodiment of the application discloses a double-gas gas pedal switch, which comprises a base 1, an upper cover 2, a pedal 3, a switch spring 4 and valve assemblies 5. The upper cover 2 is arranged on the base 1, and a forwardly extending pedal 3 is hingedly arranged at the rear side of the upper cover 2, a small part of the pedal 3 is located in the upper cover 2, and a large part of the pedal 3 is located at the front side of the upper cover 2, so as to facilitate an operator to step on the pedal 3. The switch spring 4 is arranged between the base 1 and the pedal 3, and the switch spring 4 is compressed when the operator steps on the pedal 3, and the pedal 3 can be reset under the elastic force of the switch spring 4 when the foot of the operator leaves the pedal 3. The valve assemblies 5 are two and are arranged side by side on the base 1, one is used for connecting gas, and the other is used for connecting combustion-supporting gas, so that the two valve assemblies 5 can be controlled simultaneously by one pedal 3, the simultaneous supply and simultaneous cut-off of the gas and the combustion-supporting gas are realized, and resource waste is reduced.

[0025] Specifically, the valve assembly 5 comprises a valve body 10 and a valve rod 30. The valve body 10 is in a block shape and is fixedly arranged on the base 1. An air inlet 11 and an air outlet 12 are formed in the rear side of the valve body 10 and face inward, the air inlet 11 and the air outlet 12 are both blind holes, and the outer ends thereof are connected with a gas source and a gas-using device through a gas pipe joint and a gas pipe. A valve hole 20 is formed downward on the top surface of the valve body 10, the valve hole 20 is a through hole, the bottom is provided with a baffle 15, and the valve rod 30 is arranged in the valve hole 20. An air inlet hole 13 and an air outlet hole 14 are formed in the valve body 10, the air outlet hole 14 extends to the air outlet 12 from the valve hole 20 on the side of the valve body 10 which is perpendicular to the air inlet 11, so as to communicate the air outlet 12 with the valve hole 20, a steel ball plug is arranged in the hole channel on the side of the valve hole 20 which is away from the air outlet 12, so as to close the hole channel and prevent gas leakage. The air inlet hole 13 is formed from the inner end of the air inlet 11 to the valve hole 20 in the valve body 10, so as to communicate the air inlet 11 with the valve hole 20.

[0026] Specifically, the valve hole 20 is sequentially divided into a first hole section 21, a second hole section 22, a third hole section 23 and a fourth hole section 24 from top to bottom, the hole diameters of the first hole section 21, the second hole section 22, the third hole section 23 and the fourth hole section 24 are gradually increased, the first hole section 21 and the second hole section 22, the second hole section 22 and the third hole section 23 are tapered transitions, and the third hole section 23 and the fourth hole section 24 are stepped transitions. The air outlet hole 14 is located at the height of the first hole section 21 and is used for communicating with the first hole section 21; the air inlet hole 13 is located at the height of the second hole section 22 and is used for communicating with the second hole section 22.

[0027] The valve rod 30 is vertically slidingly arranged in the valve hole 20, and the top end thereof protrudes upward through the valve body 10 and is arranged adjacent to the bottom surface of the pedal 3. The valve rod 30 is sequentially divided into a first rod section 31, a second rod section 32, a third rod section 33 and a fourth rod section 34 from top to bottom. The outer diameter of the first rod section 31 is smaller than the hole diameter of the first hole section 21, the outer diameter of the third rod section 33 is greater than the hole diameter of the first hole section 21 and smaller than the hole diameter of the second hole section 22, the outer diameter of the fourth rod section 34 is greater than the hole diameter of the second hole section 22 and smaller than the hole diameter of the third hole section 23, and the outer diameter of the second rod section 32 is smaller than the outer diameter of the first rod section 31, so that the valve rod 30 as a whole presents a tapered structure that is small at the top and large at the bottom, and is more stable.

[0028] An annular groove 35 is formed in the lower part of the first rod section 31, the upper part of the third rod section 33 and the fourth rod section 34, and an O-shaped sealing ring 36 is arranged in the annular groove 35. The two sides of the O-shaped sealing ring 36 are in sealing contact with the groove bottom of the annular groove 35 and the hole wall of the valve hole 20, respectively. The O-shaped sealing ring 36 at the lower part of the first rod section 31 is located in the first hole section 21 and always at the upper end of the air outlet hole 14, for preventing gas from leaking upward. The O-shaped sealing ring 36 on the third rod section 33 slides in the second hole section 22 and at the height of the air inlet hole 13, for controlling the communication or blockage between the air inlet hole 13 and the air outlet hole 14. The O-shaped sealing ring 36 on the fourth rod section 34 is always located in the third hole section 23, for preventing gas from leaking downward.

[0029] The baffle 15 is arranged in the fourth hole section 24 at the bottom of the valve hole 20, and a return spring 16 is arranged between the bottom of the valve rod 30 and the baffle 15. Specifically, a limiting hole 38 is formed upward in the bottom of the valve rod 30, a limiting column 17 is protrusively arranged on the baffle 15, one end of the return spring 16 is sleeved on the limiting column 17, and the other end is located in the limiting hole 38, so that the return spring 16 always ensures a vertical posture, effectively reducing the probability of bending deformation of the return spring 16.

[0030] In the initial state, under the elastic force of the return spring 16, the valve rod 30 is located at the uppermost end of its sliding stroke, and the O-shaped sealing ring 36 on the third rod section 33 is located at the upper side of the air inlet hole 13, thereby blocking the air inlet hole 13 and the air outlet hole 14, so that the gas cannot enter the air outlet hole 14 after reaching the valve hole 20 from the air inlet 11 and the air inlet hole 13, that is, no gas supply to the gas using equipment.

[0031] In the working state, the operator steps on the pedal 3, the valve rod 30 is moved downward by the pedal 3, the O-shaped sealing ring 36 on the third rod section 33 is moved to the lower side of the air inlet hole 13, the valve hole 20 is formed into an annular cavity at the second rod section 32 due to the smaller outer diameter of the second rod section 32, and the gas flow is facilitated. At this time, the air inlet hole 13 is communicated with the air outlet hole 14 through the annular cavity, and the external gas is supplied to the gas using equipment through the air inlet 11, the air inlet hole 13, the valve hole 20, the air outlet hole 14 and the air outlet hole 14. The second rod section 32 and the third rod section 33 of the valve rod 30 are connected through the conical rod section 37, when the valve rod 30 is moved downward, the conical rod section 37 is located near the height of the air inlet hole 13, so that the size of the communication area of the valve hole 20 and the air inlet hole 13 can be controlled by controlling the height of the conical rod section 37, and the gas flow is controlled.

[0032] The preferred embodiments of the present application have been described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principles of the present application can also be considered as the protection scope of the present application.

Claims

1. A dual-gas foot switch, comprising a base (1) and an upper cover (2) disposed on the base (1), wherein a forward-extending pedal (3) is hinged to the rear side of the upper cover (2), and a switch spring (4) is disposed between the base (1) and the pedal (3), characterized in that: Two valve assemblies (5) are arranged side by side on the base (1). Each valve assembly (5) includes a valve body (10) fixedly mounted on the base (1). The rear side of the valve body (10) has an inlet (11) and an outlet (12) facing inward. The top surface of the valve body (10) has a valve hole (20) facing downward. The valve body (10) has an inlet hole (13) connecting the inlet (11) and the valve hole (20) and an outlet (12) connecting the outlet (12) and the valve hole (20) inside the valve body (10). The valve hole (20) has an air outlet (14). A baffle (15) is provided at the bottom of the valve hole (20). A valve stem (30) is vertically slidably arranged inside the valve hole (20). A return spring (16) is provided between the bottom of the valve stem (30) and the baffle (15). The top of the valve stem (30) passes through the valve body (10), protrudes upward, and is arranged near the bottom surface of the pedal (3). The pedal (3) presses down on the valve stem (30) to make the valve stem (30) move downward to connect the air inlet (13) and the air outlet (14).

2. The dual-gas foot switch according to claim 1, characterized in that: The valve orifice (20) is divided into a first orifice section (21), a second orifice section (22), a third orifice section (23), and a fourth orifice section (24) from top to bottom. The orifice diameters of the first orifice section (21), the second orifice section (22), the third orifice section (23), and the fourth orifice section (24) increase sequentially. The first orifice section (21) and the second orifice section (22), and the second orifice section (22) and the third orifice section (23) are tapered transitions. The third orifice section (23) and the fourth orifice section (24) are stepped transitions. The air inlet (13) is connected to the second orifice section (22), and the air outlet (14) is connected to the first orifice section (21).

3. A dual-gas foot switch according to claim 2, characterized in that: The valve stem (30) is divided into a first rod segment (31), a second rod segment (32), a third rod segment (33), and a fourth rod segment (34) from top to bottom. The outer diameter of the first rod segment (31) is smaller than the diameter of the first hole segment (21). The outer diameter of the third rod segment (33) is larger than the diameter of the first hole segment (21) and smaller than the diameter of the second hole segment (22). The outer diameter of the fourth rod segment (34) is larger than the diameter of the second hole segment (22) and smaller than the diameter of the third hole segment (23). The outer diameter of the second rod segment (32) is smaller than the outer diameter of the first rod segment (31). Annular grooves (35) are provided on the lower part of the first rod segment (31), the upper part of the third rod segment (33), and the fourth rod segment (34). An O-ring seal (36) is provided in the annular groove (35). The two sides of the O-ring seal (36) are in sealing contact with the bottom of the annular groove (35) and the wall of the valve hole (20), respectively.

4. A dual-gas foot switch according to claim 3, characterized in that: The second segment (32) and the third segment (33) are connected by a tapered segment (37).

5. A dual-gas foot switch according to claim 1, characterized in that: The valve stem (30) has a limiting hole (38) at the bottom facing upwards, and a limiting post (17) is protruding from the baffle (15). One end of the reset spring (16) is sleeved on the limiting post (17), and the other end is located in the limiting hole (38).