Method for manufacturing valve body shell of gas valve

Abstract

The invention relates to a manufacturing method of a valve body shell of a gas valve. A middle gas channel is manufactured in a die-casting core-pulling mode, a gas inlet is communicated with the middle gas channel, a hole is drilled in a pressure reduction cabin to the middle gas channel, and a gas outlet is communicated with the pressure reduction cabin through a switch piece mounting part. According to the gas valve manufactured through the method, the defects that in the prior art, a gas supply tank is exposed due to the fact that a gas valve body is too thick, large in size and incapable of being matched with a small outdoor furnace are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of gas cookers, in particular to a gas valve. Background Art

[0002] The existing gas valve for a cassette stove, including the gas valve for a cassette stove, has an air inlet and a switch device arranged on opposite sides of the valve body, and the air inlet and the gas supply tank connection device and the switch member are arranged on the same axis, resulting in a relatively large thickness of the entire valve body. For example, the Chinese utility model specification (authorization announcement number: CN201487327U) discloses a gas valve for a cassette stove. Figure 1 As shown, it includes a valve body 1, the rear end of the valve body 1 has an air inlet 2 connected to the gas supply tank, the upper end of the valve body 1 is provided with a decompression chamber 3 connected to the air inlet 2, and the front end of the valve body 1 is provided with a rotating adjustment rod, that is, a combination of a knob and a switch 50, which is used to control the on / off of the air outlet 4 through the rotation of the switch 50. The gas supplied by the gas supply tank enters the decompression chamber 3 from the air inlet 2 for decompression. Under the control of the switch 50 at the front end of the valve body, the decompressed gas is output from the decompression chamber 3 and then enters the air outlet passage, and then outputs from the air outlet 4 to supply gas to the combustion mechanism. In this structure, the rotating adjustment rod is a combination of the switch 50 and the knob, which is relatively long. Since the rotating adjustment rod needs to be set at the front end of the valve body 1 and on the same axis as the air inlet 2, that is, the switch 50 and the air inlet are on the same axis, the front and rear spans of the valve body 1 are relatively large, resulting in a large thickness of the entire gas valve.

[0003] In recent years, with the rise of outdoor sports, portable outdoor equipment has flourished. In order to adapt to the trend and portability, outdoor portable cassette stoves have gradually become miniaturized. However, limited by the thickness of the cassette stove gas valve, miniaturized cassette stoves will appear as follows: Figure 2 As shown in the embarrassment, the gas supply tank has to be exposed outside the gas tank due to the thickness of the gas valve of the cassette stove. This design is helpless. In the event of an explosion, the gas supply tank is not restrained and may hit the user, or cause a large area of ​​gas leakage, leading to a more serious accident. The tail of the gas supply tank is exposed, and the pot will radiate heat to the gas supply tank during use, causing the gas supply tank to overheat, posing a safety hazard. The gas supply tank is exposed and is easily touched during use, causing leakage or the gas supply tank to fall off. The gas supply tank is exposed and is easily blocked by other objects during use, causing the overpressure safety device of the cassette stove to fail and the gas supply tank cannot be effectively ejected.

[0004] Therefore, the problem of the exposed setting of the gas supply tank of the small cassette furnace needs to be solved urgently. Summary of the invention

[0005] The object of the present invention is to provide a manufacturing method for the valve body shell of a gas valve. By applying the gas valve of the present invention, the defect that the existing gas valve body is too thick and cannot be adapted to a small outdoor stove, resulting in the exposure of the gas supply tank, is overcome.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] A manufacturing method for the valve body shell of a gas valve is as follows:

[0008] Manufacture the valve body shell, which includes an air inlet for connecting a gas supply tank arranged at the rear end, an installation groove for installing a component for controlling the gas outlet volume at the front end, a decompression chamber, and an air outlet for supplying gas to a combustion mechanism; a switch member installation part is arranged on one side of the installation groove deviating from the axis of the air inlet; make an intermediate air passage in the middle of the valve body shell, with one end of the intermediate air passage closed, one end open, and its opening located on the valve body shell;

[0009] Make an intermediate air passage in the middle of the valve body shell and make each passage communicating with the intermediate air passage, including: making an air inlet passage from the air inlet to the inside of the valve body shell, so that the air inlet passage communicates with the intermediate air passage; making an air outlet passage from the air outlet to the direction of the switch member installation part, and the air outlet passage opens at the switch member installation part; making a communication passage between the decompression chamber and the switch member installation part; one end of the intermediate air passage opens at the valve body shell and the other end communicates with the decompression chamber.

[0010] The valve body shell is manufactured by die-casting, and at the same time of die-casting, a core-pulling method is adopted to make the intermediate air passage, the air inlet passage and the air outlet passage in the valve body shell.

[0011] On the valve body shell, its decompression chamber is arranged on the same side as the switch member installation part on one side deviating from the axis of the air inlet; the opening of the intermediate air passage is located on the valve body shell on the other side deviating from the axis of the air inlet.

[0012] On the valve body shell, its air outlet is arranged on the same side as the switch member installation part on one side deviating from the axis of the air inlet.

[0013] On the valve body shell, its switch member installation part is a groove.

[0014] Use a drilling machine to drill through the air outlet passage between the air outlet and the groove, and the air outlet passage opens at the side wall of the groove.

[0015] Use a drilling machine to drill through the communication passage between the groove and the decompression chamber.

[0016] Use a drilling machine to drill through the passage communicating with the intermediate air passage from the decompression chamber to the inside of the valve body shell.

[0017] The intermediate air passage intersects with the axis of the air inlet, and its opening and the switch member installation part are distributed on both sides of the axis of the air inlet.

[0018] One side of the intermediate air passage that is relatively far from the switch member mounting portion is blocked by a blocking member.

[0019] The intermediate air passage is machined on the valve body shell by a drilling machine from the side far from the switch member mounting portion towards the side close to the switch member mounting portion.

[0020] The advantages of the present invention are as follows: 1. The switch member mounting portion is arranged beside the axis of the air inlet, making full use of the space in the middle part of the valve body shell, which not only thins the thickness of the valve body shell but also utilizes the space of the valve body shell; 2. Since the switch member mounting portion is arranged beside the axis of the air inlet, the air outlet can also be designed based on the position of the switch member mounting portion, and is designed on one side of the switch member mounting portion, shortening the distance between the air outlet and the combustion device and making the gas outlet response speed of the gas valve faster; 3. The depth of the installation groove can be adjusted according to the thickness of the component for controlling the air outlet volume, effectively shortening the thickness of the front and rear ends of the valve body shell; 4. The decompression chamber is arranged on the same side as the switch member mounting portion, which can effectively reduce the volume of the entire gas valve; 5. The thickness of the valve body shell is thinned and the volume is reduced. The thickness and volume of the gas valve body applying the present invention are also correspondingly thinned and reduced, so that the gas supply tank of the small cassette stove no longer protrudes, eliminating potential safety hazards and making the cassette stove more portable and safer. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of an existing cassette stove gas valve;

[0022] Figure 2 is an existing small cassette stove;

[0023] Figure 3 is a cross-sectional view of the valve body shell made according to the present invention;

[0024] Figure 4 is a schematic structural diagram of the valve body shell made according to the present invention Figure 1 ;

[0025] Figure 5 is a schematic structural diagram of the valve body shell made according to the present invention Figure 2 ;

[0026] Figure 6 is a schematic structural diagram of the gas valve using the present invention;

[0027] Figure 7 is an exploded view of the first embodiment of the gas valve using the present invention;

[0028] Figure 8 is a schematic structural diagram of the rotating shaft of the first embodiment of the gas valve using the present invention;

[0029] Figure 9 is a schematic structural diagram of the sealing sleeve of the first embodiment of the gas valve using the present invention;

[0030] Figure 10 It is an exploded view of the second embodiment of the gas valve using the present invention;

[0031] Figure 11 It is an exploded view of the third embodiment of the gas valve using the present invention;

[0032] In the figure: 1 - valve body; 11 - valve body shell; 2 - air inlet; 3 - decompression chamber; 31 - decompression chamber; 4 - air outlet; 5 - switch device; 50 - switch part; 51 - knob; 52 - rotating shaft; 521 - air inlet hole; 522 - air outlet hole; 53 - driving gear; 531 - driving wheel; 54 - driven gear; 541 - synchronous belt; 542 - transmission belt; 55 - driven gear; 551 - driven wheel; 56 - sealing sleeve; 561 - third through hole; 562 - fourth through hole; 563 - clamping strip; 6 - installation groove; 61 - switch part installation part; 611 - groove; 62 - cover body; 63 - driving gear installation shaft; 64 - driven gear installation shaft; 65 - first through hole; 66 - second through hole; 67 - clamping groove; 7 - intermediate air passage; 71 - opening of air inlet passage; 8 - screw. Detailed implementation manners

[0033] The following further describes the present invention with reference to the accompanying drawings. The accompanying drawings are only for illustrative purposes and should not be construed as a limitation of this patent.

[0034] To describe this embodiment more concisely, some components that are well known to those skilled in the art but not relevant to the main content of this creation will be omitted in the drawings or description. Additionally, for ease of expression, some components in the drawings will be omitted, enlarged, or reduced, but this does not represent the actual size or entire structure of the product.

[0035] The present invention discloses a manufacturing method for the valve body shell of a gas valve, and the steps are as follows:

[0036] Manufacture the valve body shell 11 as shown in Figures 3 - 5 The valve body shell 11 includes an air inlet 2 for connecting a gas supply tank provided at the rear end and an installation groove 6 for installing components controlling the gas output amount at the front end. As shown in Figure 5 , Figure 7 The components controlling the gas output amount include a switch device 5 composed of a knob 51 as a control component, a transmission mechanism, and a switch part 50.

[0037] It further includes a decompression chamber 31 and an air outlet 4 for supplying gas to the combustion mechanism; a switch part installation part 61 is provided on one side of the installation groove 6 deviating from the axis of the air inlet 2; when manufacturing the gas valve in the future, the knob 51 and the switch part 50 are no longer integrated, which can effectively reduce the thickness between the front and rear ends of the gas valve, and the valve body 1 can be made thinner than the existing ones.

[0038] As shown inFigure 3 As shown, an intermediate air passage 7 is made in the middle of the valve body housing 11. One end of the intermediate air passage 7 opens on the valve body housing 11, and the other end communicates with the decompression chamber 31.

[0039] Preferably, the valve body housing 11 is manufactured by die-casting, and at the same time of die-casting, a core-pulling method is used to make the intermediate air passage 7, the intake air passage and the exhaust air passage in the valve body housing 11. Due to the use of die-casting core-pulling design, the depth of the micro-holes leading to the decompression chamber 31 is reduced, and it can also be completed by drilling. The intermediate air passage 7 is provided as an intermediate hub between the intake air passage and the decompression chamber 31 to facilitate opening up the air passage between the intake air passage and the decompression chamber 31.

[0040] The manufacturing process also includes machining each passage communicating with the intermediate air passage 7, including: making an intake air passage from the intake port 2 into the interior of the valve body housing 11, and the opening 71 of the intake air passage is in the intermediate air passage 7 and communicates with it; making an exhaust air passage from the exhaust port 4 towards the switch member mounting portion 61, and the exhaust air passage opens at the switch member mounting portion 61; making a communication passage between the decompression chamber 31 and the switch member mounting portion 61. When the intermediate air passage 7 is not directly communicated with the decompression chamber 31, a passage communicating with the intermediate air passage 7 is machined from the decompression chamber 31 into the interior of the valve body housing 11. These above passages can also be made by die-casting core-pulling method.

[0041] Furthermore, in order to rationally utilize the space of the valve body housing 11 and minimize the volume when making a gas valve in the future, on the valve body housing 11, its decompression chamber 31 is arranged on the same side of the switch member mounting portion 61 that deviates from the axis of the intake port 2; the exhaust port 4 is also arranged on the same side of the switch member mounting portion 61 that deviates from the axis of the intake port 2. In this way, the intermediate air passage 7 can be directly communicated with the decompression chamber 31, and the opening of the intermediate air passage 7 is on the valve body housing 11 on the other side that deviates from the axis of the intake port 2.

[0042] On the valve body housing 11, its switch member mounting portion 61 is a groove 611, which can further shorten the distance from the decompression chamber 31 and facilitate subsequent machining.

[0043] Use a drilling machine to open up the communication passage between the groove 611 and the decompression chamber 31. Preferably, drill a hole at the bottom of the groove 611 to form a first through hole 65. Use a drilling machine to open up the exhaust air passage between the exhaust port 4 and the groove 611, and the exhaust air passage opens on the side wall of the groove 611, which is the second through hole 66.

[0044] The decompression chamber 31 is communicated with the intake air passage through the intermediate air passage 7, and the processing difficulty is significantly reduced compared with the prior art.

[0045] Furthermore, the intermediate air passage 7 intersects with the axis of the intake port 2, and the opening of the intermediate air passage 7 and the switch member mounting portion 61 are distributed on both sides of the axis of the intake port 2.

[0046] One side of the intermediate air passage 7 that is relatively far from the switch member mounting portion 61 is blocked by a blocking member. A common method is to make a thread at the opening and then block it with a screw 8 and a sealing ring.

[0047] The intermediate air passage 7 can also be processed on the valve body housing 11 by a drilling machine from the side far from the switch member mounting portion 61 to the side close to the switch member mounting portion 61.

[0048] The gas valve body made by the method of the present invention is thinner in thickness and smaller in volume than the gas valves of the prior art, and can be miniaturized.

[0049] As Figures 3 - 11 shown, a gas valve including a valve body housing made by the method of the present invention includes a valve body 1, and the valve body 1 is provided with an air inlet 2 connected to a gas supply tank, an air inlet passage, a pressure reduction chamber 3, an air outlet passage, and an air outlet 4 for supplying gas to a combustion mechanism;

[0050] The air inlet 2 is arranged at the rear end of the valve body 1 and is communicated with the pressure reduction chamber 3 through the air inlet passage, and the air outlet 4 is communicated with the pressure reduction chamber 3 through the air outlet passage;

[0051] As Figure 6 shown, at the front end of the valve body 1, that is, the opposite end of the air inlet 2, a control component, a transmission mechanism, and a switch member 50 are arranged. The control component drives the switch member 50 through the transmission mechanism. The switch member 50 is arranged on the passage where the pressure reduction chamber 3 is communicated with the air outlet passage, and controls the on / off of the air outlet 4 through its movement; Different from the prior art, the switch member 50 is arranged on one side deviating from the axis of the air inlet 2, so that the span between the front and rear ends of the valve body 1 is reduced. Compared with the existing gas valves, the thickness of the valve body 1 is reduced. When applied to a small outdoor cassette stove, the exposure of the gas supply tank as Figure 2 shown can be avoided.

[0052] As Figure 5 、 Figure 7 shown, an installation groove 6 is arranged on the front side of the valve body 1. A switch device 5 composed of a knob 51 as a control component, a transmission mechanism, and a switch member 50 is arranged in the installation groove 6; The switch member mounting portion 61 is arranged on one side of the installation groove 6 deviating from the axis of the air inlet 2, and the switch member 50 is arranged in the switch member mounting portion 61; The knob 51 is arranged on the other side of the installation groove 6 and on the axis of the air inlet 2. The switch member mounting portion 61 is communicated with the pressure reduction chamber 3 and the air outlet 4.

[0053] Preferably, both the pressure reduction chamber 3 and the air outlet 4 are arranged on the same side of the switch member mounting portion 61. In this way, the distance between the switch member mounting portion 61 and the pressure reduction chamber 3 and the air outlet 4 can be shortened, the space of the valve body housing 11 can be utilized more fully, the overall volume of the gas valve can be effectively reduced, and miniaturization can be achieved.

[0054] like Figure 8 As shown, the switch member 50 is a frustum-shaped rotating shaft 52, with an air inlet 521 at the bottom of the rotating shaft 52 and an air outlet 522 at the side wall, and the air outlet 522 is connected to the air inlet 521. To increase air tightness, the air inlet 521 can be set as an eccentric hole.

[0055] The switch mounting portion 61 is a conical groove 611 that matches the shape of the rotating shaft 52. In this way, the distance between the switch mounting portion 61 and the decompression chamber 3 is shortened, and the entire volume of the gas valve is reduced. Figure 5 As shown, the bottom of the groove 611 is provided with a first through hole 65 which is connected to the decompression chamber 3, and the side wall of the groove 611 is provided with a second through hole 66 which is connected to the air outlet duct; the rotation of the rotating shaft 52 can make the air inlet hole 521 connected to or staggered with the first through hole 65, and when the air inlet hole 521 is connected to or staggered with the first through hole 65, the air outlet hole 522 on the side wall of the rotating shaft 52 is connected to or staggered with the second through hole 66.

[0056] In order to enhance the sealing performance between the groove 611 and the rotating shaft 52, a sealing sleeve 56 is provided between the groove 611 and the rotating shaft 52. Figure 9 As shown, the sealing sleeve 56 is in the shape of a hollow cone, with a third through hole 561 arranged at the bottom and a fourth through hole 562 arranged on the side wall. The third through hole 561 is connected to the first through hole 65, and the fourth through hole 562 is connected to the second through hole 66. The rotation of the rotating shaft 52 can make the air inlet 521 connected to or staggered with the first through hole 65 and the third through hole 561. When the air inlet 521 is connected to or staggered with the first through hole 65 and the third through hole 561, the air outlet 522 on the side wall of the rotating shaft 52 is connected to or staggered with the second through hole 66 and the fourth through hole 562.

[0057] Furthermore, in order to ensure that the sealing sleeve 56 is installed stably and firmly, as Figure 5 , Figure 9 As shown, a clamping groove 67 is provided on the side wall of the groove 611 , and a clamping strip 563 is provided on the outer wall of the sealing sleeve 56 . The clamping strip 563 of the sealing sleeve 56 is inserted into the clamping groove 67 of the groove 611 .

[0058] like Figure 7 Shown is the first embodiment of the transmission mechanism.

[0059] The transmission mechanism includes a driving gear 53, a transmission gear 54 and a passive gear 55. The driving gear 53, the rotating shaft 52 and the passive gear 55 are fixedly connected, and the transmission gear 54 and the passive gear 55 are meshed with each other; the knob 51 is connected to the driving gear 53, and the passive gear 55 is connected to the switch member 50; the knob 51 drives the driving gear 53 to rotate, drives the transmission gear 54 to drive the passive gear 55, and the passive gear 55 drives the switch member 50 to rotate to open / close the passage between the decompression chamber 3 and the air outlet 4.

[0060] likeFigure 7 As shown, the installation groove 6 is provided with a driving gear installation shaft 63 and a driven gear installation shaft 64.

[0061] As Figure 10 shown, it is the second embodiment of the transmission mechanism.

[0062] The transmission mechanism includes a driving gear 53, a synchronous belt 541 and a driven gear 55. The synchronous belt 541 connects the driving gear 53 and the driven gear 55. The synchronous belt 541 is a conveyor belt with teeth on its inner surface, and the teeth on its inner surface mesh with the driving gear 53 and the driven gear 55; the knob 51 is connected to the driving gear 53, the driven gear 55 is connected to the switch member 50, the knob 51 drives the driving gear 53 to rotate, drives the synchronous belt 541 and thus drives the driven gear 55 to rotate, and the driven gear 55 drives the switch member 50 to rotate to open / close the passage between the decompression chamber 3 and the air outlet 4.

[0063] As Figure 11 shown, it is the third embodiment of the transmission mechanism.

[0064] The transmission mechanism includes a driving wheel 531, a transmission belt 542 and a driven wheel 551. The transmission belt 542 is a V-belt. The transmission belt 542 connects the driving wheel 531 and the driven wheel 551; the knob 51 is connected to the driving wheel 531, the driven wheel 551 is connected to the switch member 50, the knob 51 drives the driving wheel 531 to rotate, drives the transmission belt 542 and thus drives the driven wheel 551 to rotate, and the driven wheel 551 drives the switch member 50 to rotate to open / close the passage between the decompression chamber 3 and the air outlet 4.

[0065] Furthermore, a cover body 62 is provided to cover the installation groove 6. The cover body 62 is provided with an opening corresponding to the knob 51. The transmission mechanism and the switch member 50 are covered by the cover body 62 in the installation groove 6.

[0066] In summary, the above are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the scope of the patent application of the present invention should fall within the technical scope of the present invention.

Claims

1. A manufacturing method of a valve body shell of a gas valve, characterized in that: The steps are as follows: Manufacture a valve body shell (11), which includes an air inlet (2) for connecting a gas supply tank provided at the rear end, a mounting groove (6) for mounting a component for controlling the gas outlet amount at the front end, and also includes a decompression chamber (31) and an air outlet (4) for supplying gas to a combustion mechanism; a switch member mounting portion (61) is provided on one side of the mounting groove (6) deviating from the axis of the air inlet (2). Manufacture an intermediate air passage (7) in the middle of the valve body shell (11), and manufacture each passage communicating with the intermediate air passage (7), including: manufacturing an air inlet passage from the air inlet (2) into the interior of the valve body shell (11) so that the air inlet passage communicates with the intermediate air passage (7); manufacturing an air outlet passage from the air outlet (4) towards the switch member mounting portion (61), and the air outlet passage opens at the switch member mounting portion (61); manufacturing a communication passage between the decompression chamber (31) and the switch member mounting portion (61); one end of the intermediate air passage (7) opens at the valve body shell (11), and one end communicates with the decompression chamber (31).

2. The manufacturing method of the valve body shell of the gas valve according to claim 1, characterized in that: The valve body shell (11) is manufactured by die-casting, and the intermediate air passage (7), the air inlet passage and the air outlet passage are manufactured in the valve body shell (11) by using a core-pulling method during die-casting.

3. The manufacturing method of the valve body shell of the gas valve according to claim 1, characterized in that: On the valve body shell (11), its decompression chamber (31) is provided on the same side as the switch member mounting portion (61) on one side deviating from the axis of the air inlet (2); the opening of the intermediate air passage (7) is located on the valve body shell (11) on the other side deviating from the axis of the air inlet (2).

4. The manufacturing method of the valve body shell of the gas valve according to claim 3, characterized in that: On the valve body shell (11), its air outlet (4) is provided on the same side as the switch member mounting portion (61) on one side deviating from the axis of the air inlet (2).

5. The manufacturing method of the valve body shell of the gas valve according to claim 4, characterized in that: On the valve body shell (11), its switch member mounting portion (61) is a groove (611).

6. The manufacturing method of the valve body shell of the gas valve according to claim 5, characterized in that: Use a drilling machine to drill through the air outlet passage between the air outlet (4) and the groove (611), and the air outlet passage opens at the side wall of the groove (611); use a drilling machine to drill through the communication passage between the groove (611) and the decompression chamber (31).

7. The manufacturing method of the valve body shell of the gas valve according to claim 1, characterized in that: Use a drilling machine to drill from the decompression chamber (31) into the interior of the valve body shell (11) to drill through the passage communicating with the intermediate air passage (7).

8. The manufacturing method of the valve body shell of the gas valve according to claim 1, characterized in that: The intermediate air passage (7) intersects with the axis of the air inlet (2), and its opening and the switch member mounting portion (61) are distributed on both sides of the axis of the air inlet (2).

9. The manufacturing method of the valve body shell of the gas valve according to claim 1, characterized in that: One side opening of the intermediate air passage (7) relatively far from the switch member mounting portion (61) is blocked by a blocking member.

10. The manufacturing method of the valve body shell of the gas valve according to claim 1, characterized in that: The intermediate air passage (7) is processed on the valve body shell (11) by a drilling machine from the side far from the switch member mounting portion (61) towards the side close to the switch member mounting portion (61).

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