A safe gas valve regulating mechanism for rapid mass production

Abstract

The present invention discloses a safe gas valve regulating mechanism that can realize rapid mass production, and belongs to the technical field of gas appliances. It mainly comprises a valve body, which comprises a valve core cavity for accommodating an injection-molded valve core, a valve body air outlet channel, and a valve body air inlet channel; a valve seat is provided with a primary main channel of the valve seat connected to a secondary main channel of the valve seat; a control switch for controlling the on-off between the primary main channel of the valve seat and the secondary main channel of the valve seat is also fixed on the valve seat; and a driving unit is also included, which is used to drive the injection-molded valve core and is sealed and fixedly connected with the valve body. The present invention breaks through the technical bottleneck of "slow speed, complicated processing, and high cost" existing in the production process of traditional gas valves, and realizes low-cost rapid mass production of gas valves, with constant and reliable regulation, strong safety, and high product quality; the economic and social benefits are obvious, and it is of great significance in the field of gas valve technology, and has promoted the rapid development of my country's intelligent gas stove industry.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas appliances, and more specifically, relates to a safe gas valve regulating mechanism which breaks through the technical bottleneck of traditional gas valve production, can realize low-cost and rapid mass production of gas valve regulating mechanisms, has a simple and ingenious structural design, can regulate gas flow smoothly and constantly, and has good air tightness. Background Art

[0002] With the continuous pursuit of intelligent products in today's era, smart gas stoves have come into being. Users can directly adjust the flame of the stove automatically and constantly by touching the touch screen. The comfortable and fast operation method makes smart gas stoves popular among Chinese people.

[0003] The gas valve regulating mechanism is referred to as "gas valve". As introduced in the background technology of the Chinese patent with the authorization announcement number CN 110043679 B, the authorization announcement date 2020.02.18, and the invention name of a plug valve core, gas valve and gas appliance: the gas valve is the core control component of the gas appliance, which is used to realize the on-off of the gas pipeline or to adjust the gas intake volume.

[0004] The flow regulation function of the gas valve is mainly realized by the valve core inside it. The Chinese patent with patent application number 202010241307.6, application date 2020.03.31, and invention name of valve core, plug valve and gas appliance discloses a valve core, which mainly includes "the valve core is a columnar body, the valve core includes a bottom surface and a side surface, the valve core is formed with an air inlet channel and a first air outlet channel, the air inlet channel extends from the bottom surface into the valve core, the first air outlet channel is recessed from the side surface into the valve core, the first air outlet channel is connected to the air inlet channel, and the first air outlet channel extends along the circumferential spiral of the valve core". The first air outlet channel in the patent document extends along the circumferential spiral of the valve core, so that the connection area of ​​the first air outlet channel with the gas outlet of the plug valve gradually changes during the rotation of the valve core, so that the gas flow of the plug valve can be smoothly changed, so that the firepower can be linearly adjusted to meet user needs.

[0005] The valve core of the traditional gas valve regulating mechanism is a metal part. It is first initially formed through a casting process. After the initial forming, the surface of each valve core is polished and smoothed by a grinder. After processing, it is transported to the processing center, and the flow regulating channel on each valve core is subjected to secondary finishing by the processing center (the flow regulating channel accuracy of the valve core produced by the casting process does not meet the product requirements, which is determined by the casting process itself). It can be seen that the production process of metal valve cores is complicated, the processing is cumbersome, the equipment investment is large, the production speed is slow, it is difficult to quickly mass produce, and the production cost is high. For the production of valve cores, the injection molding process will have obvious advantages. As long as the accuracy of the injection mold is guaranteed, the accuracy of the product can be guaranteed, and the surface of the injection molded product is smooth and does not require subsequent polishing and grinding. Therefore, the injection molding process is the preferred solution to reduce the production cost of valve cores and gas valve regulating mechanisms.

[0006] The transmission metal valve core is directly assembled in the valve body and can move circumferentially relative to the valve body. The valve core is in contact with the inner wall of the valve body and grease is applied between the two. The grease not only plays a lubricating role, but also fills the small gap between the valve core and the inner wall of the valve body. The valve body is a metal part and the valve core is also a metal part. The shrinkage rate of the two same materials is the same, so the small gap between the valve core and the inner wall of the valve body is also constant. If the traditional valve core is directly molded by injection molding in order to reduce production costs, there is indeed no problem in terms of precision and smoothness. However, the valve core is a plastic part and the valve body is a metal part. The materials and shrinkage rates of the two are different. Affected by external environment such as temperature changes, the gap between the two will become larger. Although the gap change may be a gap distance that cannot be observed by the naked eye, it is enough to affect the direction of the airflow for the gas, which will seriously affect the smooth and constant regulation of the airflow, thereby making the firepower adjustment unstable and the product quality cannot meet customer needs.

[0007] This technical bottleneck has plagued the gas valve industry for many years, and the unsolvable technical problems have forced most companies to abandon the application of injection molding technology on valve cores and gas valve regulating mechanisms. Summary of the invention

[0008] The purpose of the present invention is to address the deficiencies in the prior art and to provide a safe gas valve regulating mechanism that breaks through the bottleneck of traditional gas valve production technology, can achieve low-cost and rapid mass production of gas valve regulating mechanisms, has a simple and ingenious structural design, can regulate the gas flow smoothly and constantly, and has good air tightness.

[0009] The present invention is achieved through the following technical solutions:

[0010] A safe gas valve regulating mechanism that can achieve rapid mass production.

[0011] Including valve body,

[0012] The valve body includes a valve core cavity for accommodating an injection-molded valve core, a valve body air outlet channel connected to the valve core cavity and leading to the direction of the gas appliance, and a valve body air inlet channel connected to the valve core cavity and sealedly connected to the valve seat secondary main channel of the valve seat; the valve seat is also provided with a valve seat primary main channel connected to the valve seat secondary main channel, and the valve seat primary main channel is connected to the gas pipeline through the valve seat air inlet channel; a control switch for controlling the on-off between the valve seat primary main channel and the valve seat secondary main channel is also fixed on the valve seat;

[0013] Also includes a drive unit,

[0014] The driving unit is used to drive the injection valve core and is tightly fixed to the valve body.

[0015] Preferably, the injection-molded valve core is a kit-type injection-molded valve core, comprising a positioning valve sleeve sealed and fixed to the inner wall of the valve core cavity, and a rotary valve sleeved in the positioning valve sleeve;

[0016] The positioning valve sleeve and the rotary valve are both formed by injection molding;

[0017] The positioning valve sleeve is a bottomless hollow body, and a valve sleeve air inlet hole connected to the secondary main channel of the valve seat is provided on the front end surface of the positioning valve sleeve, and a valve sleeve air outlet hole opposite to the valve body air outlet channel is provided on the peripheral wall of the positioning valve sleeve; an annular groove 1 is also provided at the front end of the positioning valve sleeve, and a sealing ring 1 is provided on the annular groove 1 and is tightened on the positioning valve sleeve;

[0018] The rotary valve comprises an insert embedded in the positioning valve sleeve, and a limiting convex part with an outer diameter larger than that of the insert; a second annular groove is provided at the front end of the insert, and a second sealing ring is provided on the second annular groove and is tensioned on the insert; a gas chamber for circulating gas and a tensioning chamber not connected to the gas chamber are provided inside the rotary valve; an inner valve air inlet through hole is provided on the front end surface of the insert, which is opposite to the air inlet through hole of the valve sleeve and is connected to the gas chamber; a flow regulating channel connected to the gas chamber is provided on the peripheral wall of the insert, wherein the circumferential motion trajectory of the flow regulating channel is directly below the air outlet through hole of the valve sleeve;

[0019] A tensioning member which generates force on both sides in the axial direction is arranged in the tensioning cavity.

[0020] Preferably, grease is applied between the position-limiting protrusion and the positioning valve sleeve.

[0021] Preferably, the driving unit comprises a driving element and a supporting seat for supporting the driving element;

[0022] The support seat is tightly fixedly connected to the valve body, and the driving element drives the rotary valve to move circumferentially via the rotating shaft;

[0023] One end of the tensioning member located in the tensioning chamber squeezes the rotating shaft, and the other end squeezes the rotating valve;

[0024] A sealing ring three is arranged between the rotating shaft and the inner wall of the supporting seat and is tensioned on the rotating shaft.

[0025] Preferably, the driving element is a stepping motor, and the rotating shaft of the driving element drives the rotary valve to rotate by a connection method in which a key and a key slot cooperate.

[0026] Preferably, the positioning valve sleeve is assembled in the valve body by plugging, and sealant is coated between the positioning valve sleeve and the valve core cavity.

[0027] Preferably, the positioning valve sleeve is fixedly provided with a ridge in the axial direction, and a sliding groove matched with the ridge is provided at a corresponding position on the inner wall of the valve core cavity.

[0028] Preferably, the number of the ridges is two, and the two ridges are arranged opposite to each other.

[0029] Preferably, the contact surface between the sealing ring 2 and the inner wall of the positioning valve sleeve is coated with grease; the contact surface between the sealing ring 3 and the inner wall of the support seat is coated with grease.

[0030] Preferably, the tensioning member is a compression spring.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention breaks through the technical bottlenecks of "slow speed, complicated processing and high cost" in the traditional gas valve production process, and realizes low-cost and rapid mass production of gas valves. The product has high precision, the production process is significantly reduced, the labor intensity of workers is significantly reduced, the production efficiency is doubled, and the production cost is greatly reduced.

[0033] The structural design of the present invention is simple and ingenious, and solves the problem of different shrinkage rates of different materials, that is, solves the problem of airtightness of the "gas flow channel", and ensures the balance and constancy of the gas flow regulation of the product; at the same time, it solves the problem of the sealing of the entire valve core cavity, effectively avoids the occurrence of gas leakage accidents, and ensures the safety of the product; the present invention has constant and reliable regulation, strong safety, and high product quality;

[0034] The economic and social benefits of the present invention are obvious, and it is of great significance in the field of gas valve technology, and it has promoted the rapid development of my country's intelligent gas stove industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0037] Figure 3 The present invention Figure 2 Partial magnification;

[0038] Figure 4 is a schematic diagram of the structure of the present invention after the injection-molded valve core is hidden;

[0039] Figure 5 It is a schematic diagram of the structure of the injection-molded valve core of the present invention;

[0040] Figure 6 It is a structural schematic diagram of the rotary shaft, the positioning valve sleeve and the rotary valve in the separated state of the present invention.

[0041] In the figure: 1. valve body; 11. valve core cavity; 12. valve body air outlet channel; 13. valve body air inlet channel; 14. slide groove; 2. injection valve core; 21. positioning valve sleeve; 211. valve sleeve air inlet hole; 212. valve sleeve air outlet hole; 213. annular groove 1; 214. sealing ring 1; 215. ridge; 22. rotary valve; 221. embedded part; 222. limit convex part; 223. annular groove 2; 224. sealing Ring 2; 225. Combustion chamber; 226. Tensioning chamber; 227. Inner valve air inlet hole; 228. Flow regulating channel; 229. Keyway; 3. Valve seat; 31. Secondary main channel of valve seat; 32. Primary main channel of valve seat; 33. Air inlet channel of valve seat; 4. Control switch; 5. Drive unit; 51. Drive element; 52. Support seat; 53. Rotating shaft; 531. Sealing ring 3; 532. Key; 6. Tensioner. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with the accompanying drawings:

[0043] In order to enable readers to better understand the design purpose of the present invention, the technical solution of the present invention is further described in combination with the embodiments below. It should be noted that the directional nouns that may be involved in the following paragraphs, including but not limited to "up, down, left, right, front, back", etc., are based on the visual directions shown in the corresponding drawings of the specification, which should not and should not be regarded as limiting the protection scope or technical solution of the present invention. Its purpose is only to facilitate those skilled in the art to better understand the technical solution created by the present invention.

[0044] In the description of this specification, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Embodiment 1:

[0046] As shown in the attached figure of the instruction manual Figure 1-Figure 5 As shown, a safe gas valve regulating mechanism that can achieve rapid mass production includes a valve body 1, the valve body 1 includes a valve core cavity 11 for accommodating an injection-molded valve core 2, a valve body air outlet channel 12 connected to the valve core cavity 11 and leading to the direction of the gas appliance, and a valve body air inlet channel 13 connected to the valve core cavity 11 and sealed and connected to the valve seat secondary main channel 31 of the valve seat 3; the valve seat 3 is also provided with a valve seat primary main channel 32 connected to the valve seat secondary main channel 31, and the valve seat primary main channel 32 is connected to the gas pipeline through the valve seat air inlet channel 33; the valve seat 3 is also fixed with a control switch 4 for controlling the on-off between the valve seat primary main channel 32 and the valve seat secondary main channel 31; the control switch 4 in this embodiment is specifically a solenoid valve, and a communication channel is provided between the valve seat primary main channel 32 and the valve seat secondary main channel 31, and the on-off state of the communication channel is determined by the suction state of the solenoid valve; the embodiment also includes a drive unit 5, the drive unit 5 is used to drive the injection-molded valve core 2, and is sealed and fixed to the valve body 1.

[0047] Specifically, the injection-molded valve core 2 of the present embodiment is a kit-type injection-molded valve core, including a positioning valve sleeve 21 sealed and fixed to the inner wall of the valve core cavity 11, and a rotary valve 22 sleeved in the positioning valve sleeve 21; the positioning valve sleeve 21 and the rotary valve 22 are both formed by injection molding. The positioning valve sleeve 21 is a bottomless hollow body, and a valve sleeve air inlet hole 211 connected to the secondary main channel 31 of the valve seat is provided on the front end surface of the positioning valve sleeve 21, and a valve sleeve air outlet hole 212 opposite to the valve body air outlet channel 12 is provided on the peripheral wall of the positioning valve sleeve 21; an annular groove 213 is also provided at the front end position of the positioning valve sleeve 21, and a sealing ring 214 tensioned on the positioning valve sleeve 21 is provided on the annular groove 213; the rotary valve 22 includes an embedded component 221 embedded in the interior of the positioning valve sleeve 21, and a limiting protrusion 222 whose outer diameter is larger than that of the embedded component 221; the embedded component 221 A second annular groove 223 is provided at the front end position, and a second sealing ring 224 is provided on the second annular groove 223 and is tensioned on the embedded component 221; the second sealing ring 224 mainly plays a sealing role, but when designing the second sealing ring 224, it should be noted that it only needs to have an interference fit in the axial direction, because the second sealing ring 22 also needs to rotate with the rotary valve 22. If there is interference fit in both the axial and radial directions, it will inevitably affect the rotation of the rotary valve. In this embodiment, grease is applied at the contact position between the second sealing ring and the inner wall of the positioning valve sleeve 21, as well as at the contact position between the front end face of the rotary valve 22 and the inner wall of the positioning valve sleeve 21 to facilitate the rotation of the rotary valve 22. The interior of the rotary valve 22 is provided with a gas chamber 225 for circulating gas, and a tensioning chamber 226 which is not connected to the gas chamber 225; the front end surface of the insert 221 is provided with an inner valve air inlet hole 227 which is opposite to the valve sleeve air inlet hole 211; the peripheral wall of the insert 221 is provided with a flow regulating channel 228 which is connected to the gas chamber 225, wherein the circumferential motion trajectory of the flow regulating channel 228 is directly below the valve sleeve air outlet hole 212; the tensioning chamber 226 is provided with a tensioning member 6 which generates a force on both sides in the axial direction.

[0048] In order to achieve stable and constant regulation of the airflow, the direction of the gas entering the valve body from the secondary main channel 31 of the valve seat is: flowing through the valve sleeve air inlet hole, the inner valve air inlet hole, the gas cavity, the flow adjustment channel, the valve sleeve air outlet hole, and the valve body air outlet channel. The flow channel formed by the gas direction is the "gas direction channel". If the airtightness of the "gas direction channel" is guaranteed, the stable and constant airflow regulation can be guaranteed.

[0049] The specific working process and principle of this embodiment are as follows:

[0050] The gas enters the primary main channel 32 of the valve seat from the valve seat air inlet channel 33. At this time, if the stove is not in working state, the control switch is in the valve closing state, and the communication channel between the primary main channel 32 of the valve seat and the secondary main channel 31 of the valve seat is blocked; at this time, if the stove is in working state, the control switch is in the open state, and the gas in the primary main channel 32 of the valve seat enters the secondary main channel 31 of the valve seat, and enters the gas chamber 225 through the valve sleeve air inlet hole 211 and the inner valve air inlet hole 227.

[0051] The positioning valve sleeve 21 and the inner wall of the valve core cavity 11 are sealed and fixed, and the sealing ring 1 214 is interference-fitted in the space between the annular groove 1 and the valve core cavity. The function of the sealing ring 1 214 is to ensure that there is no leakage between the front end face of the positioning valve sleeve 21 and the inner wall of the valve body 1; the rotary valve 22 is assembled in the positioning valve sleeve 21, and the front end position of the insert 221 is provided with an annular groove 223, and the sealing ring 224 is interference-fitted in the space between the annular groove 2 and the positioning valve sleeve 21 in the axial direction. The function of the sealing ring 224 is to ensure that there is no leakage between the front end face of the rotary valve 22 and the inner wall of the positioning valve sleeve 21. The force of the tensioning member 6 generates an extrusion force to both sides in the axial direction. At this time, the sealing ring 224 is squeezed to ensure that even if the rotary valve 22 is rotating, the sealing ring 224 will still maintain good airtightness. The tensioning member 6 has another very important function, which is to play a gap compensation role at all times. With the changes in environmental factors such as the surrounding temperature, both plastic materials and metal materials have a certain shrinkage rate. The positioning valve sleeve 21 is sealed and fixed with the inner wall of the valve core cavity 11, and there is no gap between the two. What is affected by the shrinkage rate of the material is the gap between the positioning valve sleeve and the rotary valve. When the gap between the rotary valve 22 and the positioning valve sleeve 21 becomes larger, under the action of the tensioner, the limiting protrusion 222 of the rotary valve 22 will always keep a close fit with the positioning valve sleeve 21, thereby playing a blocking role. The structural design of the sealing ring 1, the sealing ring 2, the tensioner, the positioning valve sleeve and the rotary valve ensures that the gas in the gas cavity can only flow along the "gas flow channel", ensuring the internal sealing performance of the product, thereby ensuring the smooth and constant flow regulation of the gas valve, and the good sealing performance improves the safety of the product. The closed fixed structure of the drive element and the valve body ensures the sealing of the entire valve core cavity. Even in the low probability event of valve core leakage, the closed structure between the drive element and the valve body can ensure that there is no gas leakage, ensuring the safety performance of the product.

[0052] According to user requirements, the control unit of the intelligent gas stove will control the driving element to drive the rotary valve 22 to rotate. The connection area between the flow regulating channel 228 and the valve sleeve air outlet hole 212 gradually changes during the rotation of the rotary valve 22. The gas flowing out of the valve sleeve air outlet hole 212 enters the stove through the valve body air outlet channel 12. The good internal airtightness enables this embodiment to smoothly change the gas flow of the gas valve so that the fire power can be constantly adjusted, ensuring product quality.

[0053] This embodiment breaks through the technical bottlenecks of "slow speed, complicated processing and high cost" in the traditional gas valve production process, and realizes low-cost and rapid mass production of gas valves. The product has high precision, the production process is significantly reduced, the labor intensity of workers is significantly reduced, the production efficiency is doubled, and the production cost is greatly reduced; the structural design is simple and ingenious, which solves the problem of different shrinkage rates of different materials, that is, solves the problem of airtightness of the "gas flow channel", and ensures the balance and constancy of the product gas flow regulation.

[0054] This embodiment has constant and reliable regulation, strong safety, and high product quality; the economic and social benefits are obvious, and it is of great significance in the field of gas valve technology, and has promoted the rapid development of my country's intelligent gas stove industry.

[0055] Embodiment 2:

[0056] On the basis of Example 1, the present invention continues to describe in detail the technical features involved therein and the functions and roles played by the technical features in the present invention, so as to help technicians in this field fully understand the technical solution of the present invention and reproduce it.

[0057] Under the action of the tensioning member 6, the limiting protrusion will fit tightly with the positioning valve sleeve, thereby achieving the gas flow blocking effect. In order to further ensure the smooth and constant product flow regulation, this embodiment is coated with grease between the limiting protrusion 222 and the positioning valve sleeve 21; on the one hand, the grease fills the small gap between the limiting protrusion 222 and the positioning valve sleeve 21, further ensuring the constant product flow regulation; on the other hand, it plays a lubricating role, making the rotation of the rotary valve more flexible.

[0058] In addition, in this embodiment, the contact surface between the inner insert and the positioning valve sleeve is also coated with grease which plays a dual role of sealing and lubrication.

[0059] Embodiment 3:

[0060] This embodiment is based on Embodiment 1 or Embodiment 2.

[0061] The driving unit 5 of this embodiment includes a driving element 51 and a support seat 52 supporting the driving element 51. The support seat 52 is sealed and fixedly connected to the valve body 1. The driving element 51 is a stepping motor. The sealing method is: the support seat 52 and the valve body 1 are first fixed by fasteners, and then a sealant is applied to the joint between the two. This is an existing conventional process in the valve field, and it will not be repeated to avoid cumbersome text.

[0062] The driving element 51 drives the rotary valve 22 to move circumferentially through the rotary shaft 53. The tensioning member 6 located in the tensioning chamber 226 squeezes the rotary shaft 53 at one end and squeezes the rotary valve 22 at the other end; a sealing ring 3 531 is provided between the rotary shaft 53 and the inner wall of the support seat 52 and is tensioned on the rotary shaft 53. The sealing ring 3 531 mainly plays a sealing role, but it should be noted when designing the sealing ring 3 531 that only an interference fit in the axial direction is required, because the sealing ring 3 also needs to rotate with the rotary shaft 53. If the interference fit is in both the axial and radial directions, it will inevitably affect the rotation of the rotary shaft. In this embodiment, grease is applied at the contact position between the sealing ring 3 and the inner wall of the support seat 52, and at the contact position between the rotary shaft 53 and the inner wall of the support seat 52 to facilitate the rotation of the rotary shaft 53. The tensioning member 6 generates a force on both sides in the axial direction, that is, on the one hand, it squeezes the rotary shaft, and the rotary shaft squeezes the sealing ring 3; on the other hand, it squeezes the rotary valve, the sealing ring 2 and the positioning valve sleeve.

[0063] The structural design of the rotary valve, positioning valve sleeve, sealing ring 1, sealing ring 2 and tensioner ensures that the gas in the gas chamber can only flow along the "gas flow channel", ensuring the internal sealing performance of the product, thereby ensuring the smooth and constant flow regulation of the gas valve, and the good sealing performance improves the safety of the product. The joint action of the tensioner and sealing ring 3 ensures the sealing of the entire valve core cavity. Even in the low-probability event of valve core leakage, the structural design of the tensioner and sealing ring 3 can ensure that there is no gas leakage, further ensuring the safety of the product.

[0064] In this embodiment, the driving element 51 is a stepping motor, and the rotating shaft 53 of the driving element 51 drives the rotary valve 22 to rotate by means of a connection mode in which a key 532 cooperates with a key slot 229. The structure is simple in design and easy to manufacture.

[0065] In this embodiment, the tensioning member 6 is a compression spring.

[0066] Embodiment 4:

[0067] This embodiment is based on the above-mentioned embodiment.

[0068] The positioning valve sleeve 21 is assembled in the valve body 1 by plugging, and the positioning valve sleeve 21 is sealed and fixed to the valve core cavity 11 by applying sealant. The sealant plays a fixing role on the one hand, and a sealing role on the other hand. The structural design is simple and easy to implement. When the positioning valve sleeve is assembled, the valve sleeve air outlet hole 212 of the positioning valve sleeve 21 needs to be opposite to the valve body air outlet channel 12. The plug-in structural design is conducive to the rapid assembly of the positioning valve sleeve. The positioning valve sleeve 21 is fixedly provided with a ridge 215 in the axial direction, and a slide groove 14 adapted to the ridge 215 is provided at a corresponding position on the inner wall of the valve core cavity 11. The structural design is simple and practical, and easy to manufacture.

[0069] The number of the ridges 215 is preferably two, and the two ridges 215 are arranged opposite to each other. The structure is firm and stable.

[0070] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications in the shape, structure, characteristics and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A safe gas valve regulating mechanism for rapid mass production, characterized in that: Including valve body, The valve body includes a valve core cavity for accommodating an injection-molded valve core, a valve body air outlet channel connected to the valve core cavity and leading to the direction of the gas appliance, and a valve body air inlet channel connected to the valve core cavity and sealedly connected to the valve seat secondary main channel of the valve seat; the valve seat is also provided with a valve seat primary main channel connected to the valve seat secondary main channel, and the valve seat primary main channel is connected to the gas pipeline through the valve seat air inlet channel; a control switch for controlling the on-off between the valve seat primary main channel and the valve seat secondary main channel is also fixed on the valve seat; Also includes a drive unit, The driving unit is used to drive the injection valve core and is tightly fixed to the valve body; The injection-molded valve core is a kit-type injection-molded valve core, comprising a positioning valve sleeve sealed and fixed to the inner wall of the valve core cavity, and a rotary valve sleeved in the positioning valve sleeve; The positioning valve sleeve and the rotary valve are both formed by injection molding; The positioning valve sleeve is a bottomless hollow body, and a valve sleeve air inlet hole connected to the secondary main channel of the valve seat is provided on the front end surface of the positioning valve sleeve, and a valve sleeve air outlet hole opposite to the valve body air outlet channel is provided on the peripheral wall of the positioning valve sleeve; an annular groove 1 is also provided at the front end of the positioning valve sleeve, and a sealing ring 1 is provided on the annular groove 1 and is tightened on the positioning valve sleeve; The rotary valve comprises an insert embedded in the positioning valve sleeve, and a limiting convex part with an outer diameter larger than that of the insert; a second annular groove is provided at the front end of the insert, and a second sealing ring is provided on the second annular groove and is tensioned on the insert; a gas chamber for circulating gas and a tensioning chamber not connected to the gas chamber are provided inside the rotary valve; an inner valve air inlet through hole is provided on the front end surface of the insert, which is opposite to the air inlet through hole of the valve sleeve and is connected to the gas chamber; a flow regulating channel connected to the gas chamber is provided on the peripheral wall of the insert, wherein the circumferential motion trajectory of the flow regulating channel is directly below the air outlet through hole of the valve sleeve; A tensioning member which generates force on both sides in the axial direction is arranged in the tensioning cavity.

2. A safe gas valve regulating mechanism for rapid mass production according to claim 1, characterized in that: Lubricating grease is coated between the limiting protrusion and the positioning valve sleeve.

3. A safe gas valve regulating mechanism for rapid mass production according to claim 1, characterized in that: The driving unit comprises a driving element and a supporting seat for supporting the driving element; The support seat is tightly fixedly connected to the valve body, and the driving element drives the rotary valve to move circumferentially via the rotating shaft; One end of the tensioning member located in the tensioning chamber squeezes the rotating shaft, and the other end squeezes the rotating valve; A sealing ring three is arranged between the rotating shaft and the inner wall of the supporting seat and is tensioned on the rotating shaft.

4. A safe gas valve regulating mechanism for rapid mass production according to claim 3, characterized in that: The driving element is a stepping motor, and the rotating shaft of the driving element drives the rotary valve to rotate through a connection method in which a key and a key slot cooperate.

5. A safe gas valve regulating mechanism for rapid mass production according to claim 1, characterized in that: The positioning valve sleeve is assembled in the valve body by plugging, and sealing glue is coated between the positioning valve sleeve and the valve core cavity.

6. A safe gas valve regulating mechanism for rapid mass production according to claim 5, characterized in that: The positioning valve sleeve is fixedly provided with a convex ridge in the axial direction, and a sliding groove matched with the convex ridge is opened at a corresponding position on the inner wall of the valve core cavity.

7. A safe gas valve regulating mechanism for rapid mass production according to claim 6, characterized in that: The number of the ridges is two, and the two ridges are arranged opposite to each other.

8. A safe gas valve regulating mechanism for rapid mass production according to claim 3, characterized in that: The contact surface between the sealing ring 2 and the inner wall of the positioning valve sleeve is coated with grease; the contact surface between the sealing ring 3 and the inner wall of the support seat is coated with grease.

9. A safe gas valve regulating mechanism for rapid mass production according to claim 3, characterized in that: The tensioning member is a compression spring.

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