Gas valve knob structure

Abstract

The utility model discloses a gas valve knob structure which comprises a rectangular valve body shell and an installation plate installed at the top end of the rectangular valve body shell, and a gas inlet lower valve pipe and a gas outlet lower valve pipe are installed on the two sides of the bottom end of the rectangular valve body shell respectively. A right-angle air inlet channel and a right-angle air outlet channel are arranged in the lower air inlet valve pipe and the lower air outlet valve pipe correspondingly, and an inverted-U-shaped air guide cavity communicating with the right-angle air inlet channel and the right-angle air outlet channel is formed in the rectangular valve body shell. According to the utility model, a vertical structure is adopted, so that the valve rod and the knob are positioned on the same vertical line, the working friction force between the rectangular valve body shell and the inner knob is relatively small, the movement of the ball valve gas guide structure is smoother, and natural gas always walks on the same plane; the sealing performance between the air inlet lower valve pipe and the air outlet lower valve pipe is easier to guarantee, the sealing device is easier to design and manufacture, and a good sealing effect is easy to achieve.

Description

Technical Field

[0001] The utility model relates to the technical field of gas valve accessories, in particular to a gas valve knob structure. Background Art

[0002] The knob structure of the gas valve is an important component for controlling the gas flow. It usually consists of a cylindrical knob and a valve that matches it. The function of the knob structure is to adjust the degree of opening of the valve by rotation, thereby controlling the flow of gas. When the knob is in the closed state, the valve is completely closed to prevent the gas from passing through. When the knob rotates counterclockwise, the valve opens and the gas begins to flow. When the knob rotates clockwise, the valve gradually closes and the gas flow decreases. Through this structural principle, the gas valve can effectively control and regulate the flow of gas, such as a knob assembly and a gas valve disclosed in the authorization announcement number CN210318768U, including a fixed mounting bracket and a valve stem rotatably connected to the mounting bracket; the valve stem is provided with a positioning piece corresponding to the mounting bracket, and the positioning piece can slide axially relative to the valve stem and rotate synchronously with the valve stem; the valve stem is also provided with a spring for providing a clamping force between the positioning piece and the mounting bracket, which accurately locates the size of the firepower through the cooperation of the positioning protrusion and the positioning groove, and in the positioning When the protrusion and the positioning groove alternately cooperate with each other, the user has a clear sense of vibration, but the valve body in this technical solution is a horizontal structure, and the valve stem and the valve body are distributed vertically. Since the valve stem and the valve body are distributed vertically, the valve stem needs to overcome the friction between the valve body and the valve body during movement, which increases the friction loss of the valve stem, making it more difficult to operate the valve stem and may cause wear and failure of the valve stem. At the same time, in the horizontal structure, the sealing performance between the valve stem and the valve body is easily affected. Since the valve stem needs to pass through the valve body, the design and manufacture of the sealing device become more complicated, which may result in incomplete sealing or susceptibility to contamination, thereby reducing the sealing performance of the gas valve. Utility Model Content

[0003] The utility model aims to provide a gas valve knob structure, which changes the valve body into a vertical structure so that the valve body, the valve stem and the knob are on the same vertical line to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas valve knob structure, comprising a rectangular valve body shell and a mounting plate installed on the top end of the rectangular valve body shell, wherein an intake lower valve tube and an exhaust lower valve tube are respectively installed on both sides of the bottom end of the rectangular valve body shell, and the interiors of the intake lower valve tube and the exhaust lower valve tube are respectively provided with a right-angle intake duct and a right-angle exhaust duct, the interior of the rectangular valve body shell is provided with an inverted U-shaped air guide cavity which is interconnected with the right-angle intake duct and the right-angle exhaust duct, a ball valve air guide structure for controlling the opening and closing of the inverted U-shaped air guide cavity is installed inside the rectangular valve body shell, an inner knob which drives the ball valve air guide structure to rotate is installed on the top end of the rectangular valve body shell, an outer knob shell is fixed on the surface of the inner knob, a hollow shell is installed on both sides of the top end of the mounting plate, and an anti-rotation tightening structure for applying resistance to the outer peripheral surface of the outer knob shell is installed inside the hollow shell.

[0005] Preferably, bolts are installed at the corner positions of the bottom end of the mounting plate, and the top ends of the bolts penetrate into the interior of the hollow shell. A sealing plug is installed on the outer wall of one side of the rectangular valve body shell.

[0006] Preferably, the anti-rotation clamping structure is a coil spring installed on the inner wall of one side of the hollow shell, and a sliding plate slidably installed at one end of the interior of the hollow shell, the top of the sliding plate is fixedly connected to the bottom end of the coil spring, and a protruding rod is installed at the bottom end of the sliding plate, one end of the protruding rod passes through the outside of the hollow shell and abuts against the outer wall of the outer knob shell.

[0007] Preferably, the ball valve air guide structure includes a valve stem rotatably mounted inside a rectangular valve body shell, and a ball valve body rotatably mounted inside a rectangular valve body shell below the valve stem, the interior of the ball valve body is provided with a through hole with the same diameter as the inverted U-shaped air guide cavity, the bottom end of the valve stem is fixedly connected to the top end of the ball valve body, the top end of the valve stem passes through the outside of the rectangular valve body shell and is fixedly connected to the bottom end of the inner knob.

[0008] Preferably, the bottom ends of the intake lower valve pipe and the exhaust lower valve pipe are both integrally formed with sealing tubes.

[0009] Preferably, an end cover is fixed to the top end of the outer knob shell, and an annular lip is provided at the bottom end of the end cover, and the inner diameter of the annular lip is equal to the outer diameter of the outer knob shell.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the gas valve knob structure is provided with an inner knob and an exhaust lower valve tube and other structures that cooperate with each other, so that the air inlet of the air intake lower valve tube is connected to the natural gas supply port, and the exhaust port of the exhaust lower valve tube is connected to the air inlet of the gas stove. When gas is needed, the on-off of the internal cavity of the structure is controlled by the inner knob, the ball valve gas guide structure and other components. In the knob structure, the rectangular valve body shell, the air intake lower valve tube, the exhaust lower valve tube and the inner knob and the outer knob shell are all distributed in a vertical parallel state. The vertical structure makes the valve stem and the knob on the same vertical line, which makes the working friction between the rectangular valve body shell and the inner knob relatively small, the movement of the ball valve gas guide structure is smoother, and the natural gas always moves on a plane. The sealing performance between the air intake lower valve tube and the exhaust lower valve tube is more easily guaranteed, the design and manufacture of the sealing device are simpler, and a good sealing effect is easy to achieve, which helps to prevent gas leakage and improve the safety and reliability of the gas valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 It is a side view structural schematic diagram of the utility model;

[0013] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0014] Figure 4 It is a schematic diagram of the top view structure of the utility model;

[0015] Figure 5 It is a three-dimensional structural schematic diagram of the utility model;

[0016] In the figure: 1. rectangular valve body shell; 101. inverted U-shaped air guide cavity; 2. mounting plate; 3. hollow shell; 301. protruding rod; 302. spiral spring; 303. sliding plate; 4. sealing plug; 5. intake lower valve pipe; 501. right-angle intake duct; 6. sealing pipe; 7. exhaust lower valve pipe; 701. right-angle exhaust duct; 8. ball valve body; 801. through hole; 9. valve stem; 10. inner knob; 11. outer knob shell; 12. end cover. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-5The utility model provides an embodiment: a gas valve knob structure, comprising a rectangular valve body shell 1 and a mounting plate 2 installed on the top of the rectangular valve body shell 1, an air intake lower valve pipe 5 and an exhaust lower valve pipe 7 are installed on both sides of the bottom end of the rectangular valve body shell 1, and the insides of the air intake lower valve pipe 5 and the exhaust lower valve pipe 7 are respectively provided with a right-angle air intake passage 501 and a right-angle exhaust passage 701, and the bottom ends of the air intake lower valve pipe 5 and the exhaust lower valve pipe 7 are integrally formed with a sealing pipe 6, the air intake port of the air intake lower valve pipe 5 is connected to the natural gas supply port, and the exhaust port of the exhaust lower valve pipe 7 is connected to the air intake port of the gas stove;

[0019] An inverted U-shaped air guide cavity 101 is provided inside the rectangular valve body shell 1 and is interconnected with the right-angle air inlet duct 501 and the right-angle exhaust duct 701. A ball valve air guide structure for controlling the on and off of the inverted U-shaped air guide cavity 101 is installed inside the rectangular valve body shell 1. An inner knob 10 for driving the ball valve air guide structure to rotate is installed at the top of the rectangular valve body shell 1. An outer knob shell 11 is fixed to the surface of the inner knob 10. An end cover 12 is fixed to the top of the outer knob shell 11. An annular lip is provided at the bottom end of the end cover 12. The inner diameter of the annular lip is equal to the outer diameter of the outer knob shell 11. When gas is needed, the user manually turns the outer knob shell 11, and the outer knob shell 11 drives the inner knob 10 and the ball valve air guide structure in the rectangular valve body shell 1 to rotate.

[0020] When the through hole 801 in the ball valve gas guide structure is parallel to the inverted U-shaped gas guide cavity 101, the natural gas in the lower intake valve tube 5 can enter the right-angle exhaust passage 701 through the inverted U-shaped gas guide cavity 101, and finally enter the gas stove to be ignited and used;

[0021] Hollow shells 3 are installed on both sides of the top of the mounting plate 2, and an anti-rotation abutment structure for applying resistance to the outer peripheral surface of the outer knob shell 11 is installed inside the hollow shell 3;

[0022] The ball valve gas guide structure includes a valve stem 9 rotatably mounted inside a rectangular valve body shell 1, and a ball valve body 8 rotatably mounted inside a rectangular valve body shell 1 below the valve stem 9. A through hole 801 having the same diameter as the inverted U-shaped gas guide cavity 101 is provided inside the ball valve body 8. The bottom end of the valve stem 9 is fixedly connected to the top end of the ball valve body 8. The top end of the valve stem 9 penetrates to the outside of the rectangular valve body shell 1 and is fixedly connected to the bottom end of the inner knob 10. The user rotates the outer knob shell 11, and the outer knob shell 11 drives the valve stem 9 and the ball valve body 8 to rotate. The gas flow rate of natural gas is indirectly controlled by adjusting the overlap between the through hole 801 and the inverted U-shaped gas guide cavity 101. The movement of the valve stem 9 and the ball valve body 8 can be directly controlled by rotating the knob, thereby adjusting the opening and closing degree of the inverted U-shaped gas guide cavity 101 and other cavities, and the operation is more intuitive and simple.

[0023] Bolts are installed at the corners of the bottom of the mounting plate 2, and the top ends of the bolts penetrate into the interior of the hollow shell 3. A sealing plug 4 is installed on the outer wall of one side of the rectangular valve body shell 1, and the cavity channel of the rectangular valve body shell 1 can be inspected and debugged through the sealing plug 4;

[0024] The anti-rotation abutment structure is a coil spring 302 installed on the inner wall of one side of the hollow shell 3, and a slide plate 303 slidably installed at one end of the hollow shell 3, the top of the slide plate 303 is fixedly connected to the bottom end of the coil spring 302, and a convex rod 301 is installed at the bottom end of the slide plate 303, one end of the convex rod 301 penetrates the outside of the hollow shell 3 and abuts against the outer wall of the outer knob shell 11;

[0025] When the user rotates the outer knob shell 11 and the end cover 12, the coil spring 302 in the hollow shell 3 always pushes the slide 303 and the protruding rod 301 to move toward the outer wall of the outer knob shell 11, so that the end of the protruding rod 301 is pressed against the outer wall of the outer knob shell 11. The anti-rotation pressing structure increases the resistance of the outer knob shell 11 and the inner knob 10, so that the outer knob shell 11 will not be accidentally operated or accidentally touched under normal use, which helps to prevent gas leakage or other safety problems caused by misoperation; and the anti-rotation pressing structure can prevent the knob from loosening due to equipment vibration or other reasons, which provides additional protection to ensure that the knob is in the set position and the degree of opening of the valve will not be changed due to external interference.

[0026] When the embodiment of the present application is in use, the staff first connects the air inlet of the air intake lower valve tube 5 to the natural gas supply port, and the exhaust port of the exhaust lower valve tube 7 to the air inlet of the gas stove. When gas is needed, the user manually turns the outer knob shell 11, and the outer knob shell 11 drives the inner knob 10 and the ball valve gas guide structure in the rectangular valve body shell 1 to rotate. When the through hole 801 in the ball valve gas guide structure is parallel to the inverted U-shaped gas guide cavity 101, the natural gas in the air intake lower valve tube 5 can enter the right-angle exhaust duct 701 through the inverted U-shaped gas guide cavity 101, and finally enter the gas stove to be ignited and used. In the knob structure, the rectangular valve body shell 1, the air intake lower valve tube 5, the exhaust lower valve tube 7, the inner knob 10, and the outer knob shell 11 are all distributed in a vertical parallel state. The vertical structure makes the valve stem and the knob on the same vertical line, which is more convenient to operate. By rotating the knob, the movement of the valve stem can be directly controlled, thereby adjusting the opening and closing degree of the valve. Such a design makes the operation more intuitive and simple, and reduces the difficulty of user operation. In this process, the friction between the ball valve gas guide structure and the rectangular valve body shell 1 and the inner knob 10 is relatively small, and the movement of the ball valve gas guide structure is smoother, which not only reduces the wear of the ball valve gas guide structure, but also makes the operation easier and more flexible. Natural gas also always flows on a plane, and the sealing performance between the intake lower valve pipe 5 and the exhaust lower valve pipe 7 is easier to ensure. The design and manufacture of the sealing device are simpler, and it is easy to achieve a good sealing effect. This helps to prevent gas leakage and improve the safety and reliability of the gas valve.

Claims

1. A gas valve knob structure, characterized in that: The invention comprises a rectangular valve body shell (1) and a mounting plate (2) mounted on the top of the rectangular valve body shell (1); an air intake lower valve pipe (5) and an exhaust lower valve pipe (7) are mounted on both sides of the bottom of the rectangular valve body shell (1); a right-angle air intake passage (501) and a right-angle exhaust passage (701) are arranged inside the air intake lower valve pipe (5) and the exhaust lower valve pipe (7); an inverted U-shaped guide pipe connected to the right-angle air intake passage (501) and the right-angle exhaust passage (701) is arranged inside the rectangular valve body shell (1). An air cavity (101), a ball valve air guide structure for controlling the on and off of the inverted U-shaped air guide cavity (101) is installed inside the rectangular valve body shell (1), an inner knob (10) for driving the ball valve air guide structure to rotate is installed at the top of the rectangular valve body shell (1), an outer knob shell (11) is fixed to the surface of the inner knob (10), a hollow shell (3) is installed on both sides of the top of the mounting plate (2), and an anti-rotation tightening structure for applying resistance to the outer peripheral surface of the outer knob shell (11) is installed inside the hollow shell (3).

2. A gas valve knob structure according to claim 1, characterized in that: Bolts are installed at the corner positions at the bottom of the mounting plate (2), and the top ends of the bolts penetrate into the interior of the hollow shell (3). A sealing bolt (4) is installed on the outer wall of one side of the rectangular valve body shell (1).

3. A gas valve knob structure according to claim 1, characterized in that: The anti-rotation abutting structure comprises a coil spring (302) mounted on an inner wall of one side of the hollow shell (3), and a sliding plate (303) slidably mounted at one end of the interior of the hollow shell (3), the top end of the sliding plate (303) being fixedly connected to the bottom end of the coil spring (302), the bottom end of the sliding plate (303) being mounted with a protruding rod (301), one end of the protruding rod (301) passing through the exterior of the hollow shell (3) and abutting against the outer wall of the outer knob shell (11).

4. A gas valve knob structure according to claim 1, characterized in that: The ball valve air guide structure comprises a valve stem (9) rotatably mounted inside a rectangular valve body shell (1), and a ball valve body (8) rotatably mounted inside a rectangular valve body shell (1) below the valve stem (9); a through hole (801) having the same diameter as the inverted U-shaped air guide cavity (101) is provided inside the ball valve body (8); the bottom end of the valve stem (9) is fixedly connected to the top end of the ball valve body (8); the top end of the valve stem (9) passes through the outside of the rectangular valve body shell (1) and is fixedly connected to the bottom end of the inner knob (10).

5. The gas valve knob structure according to claim 1, characterized in that: The bottom ends of the air intake lower valve pipe (5) and the exhaust lower valve pipe (7) are both integrally formed with a sealing pipe (6).

6. A gas valve knob structure according to claim 1, characterized in that: An end cover (12) is fixed to the top end of the outer knob shell (11), and an annular lip is provided at the bottom end of the end cover (12), wherein the inner diameter of the annular lip is equal to the outer diameter of the outer knob shell (11).

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