Normally open type delay timing switch valve and gas stove

Abstract

The invention provides a normally open type delay timing switch valve and a gas stove, and relates to the technical field of gas stove parts, the normally open type delay timing switch valve comprises a mechanical delay timing device and a valve device, the mechanical delay timing device comprises an elastic force storage mechanism, a gear transmission mechanism and an escapement mechanism, and the elastic force storage mechanism is connected with the escapement mechanism through the gear transmission mechanism; the valve device comprises a valve body mechanism and a valve element mechanism, and the valve element mechanism is rotatably arranged in the valve body mechanism and can connect and disconnect an internal flow channel of the valve body mechanism. The valve core mechanism is connected with the elastic force storage mechanism; slow rotation of the valve element mechanism is achieved by slowly releasing potential energy of the elastic force storage mechanism, so that delayed timing on-off of a flow channel in the valve body mechanism is achieved, the delayed timing on-off effect is remarkable, potential safety hazards can be effectively reduced, the use safety and reliability of the gas stove are improved, a mechanical delayed timing structure is adopted, and the safety of the gas stove is improved. The device has the advantages of high environmental applicability, practicability, durability, convenience in operation, convenience in later maintenance and the like.

Description

Technical Field

[0001] The invention relates to the technical field of gas stove components, and in particular to a normally open delayed timing switch valve and a gas stove. Background Art

[0002] A gas stove refers to a kitchen appliance that uses direct fire heating with gas fuels such as liquefied petroleum gas (liquid), artificial gas, and natural gas, and is widely used in daily life.

[0003] Existing gas stoves usually only have an ignition switch and a manual gas valve. Since there is no delay timing device, people often forget to turn off the gas during daily use, which may cause the stove to be burned or even a fire to occur, resulting in unnecessary family property losses and casualties. Summary of the invention

[0004] The purpose of the present invention is to provide a normally open delayed timing switch valve and a gas stove to solve the above-mentioned technical problems existing in the prior art; the preferred technical scheme among the many technical schemes provided by the present invention can produce many technical effects; see the following description for details.

[0005] To achieve the above object, the present invention provides the following technical solutions: The present invention provides a normally open delayed timing switch valve, comprising a mechanical delayed timing device and a valve device, wherein: the mechanical delayed timing device comprises an elastic force storage mechanism, a gear transmission mechanism and an escapement mechanism, the elastic force storage mechanism is connected to the escapement mechanism through the gear transmission mechanism; the valve device comprises a valve body mechanism and a valve core mechanism, the valve core mechanism can be rotatably arranged in the valve body mechanism, and can open and close the internal flow channel of the valve body mechanism; the valve core mechanism is connected to the elastic force storage mechanism.

[0006] Preferably, the mechanical delay timing device comprises a housing mechanism, wherein: the housing mechanism is detachably connected to the valve body mechanism; the elastic force storage mechanism, the gear transmission mechanism and the escapement mechanism are all arranged inside the housing mechanism, and the valve core mechanism passes through the housing mechanism.

[0007] Preferably, the elastic force storage mechanism includes a coil spring and an input gear, wherein: the coil spring is arranged in the housing mechanism; the input gear is sleeved on the valve core mechanism and rotates synchronously with the valve core mechanism, the input gear is provided with a hanging part, the coil spring is provided with a hanging part at a position corresponding to the hanging part, and the hanging part is hung and connected with the hanging part.

[0008] Preferably, the gear transmission mechanism includes a ratchet pawl assembly and a gear transmission assembly, wherein: the ratchet pawl assembly includes a pawl member and a ratchet member, and the pawl member and the ratchet member are coaxially rotatably arranged in the housing mechanism; the pawl member includes an integrally arranged pawl body and a first gear body, and the first gear body is meshed with the input gear; the ratchet member includes an integrally arranged ratchet sleeve body and a second gear body, and the interior of the ratchet sleeve body is evenly provided with ratchet teeth along the circumferential direction, the pawl body is arranged in the ratchet sleeve body, and can rotate unidirectionally relative to the ratchet sleeve body, and the second gear body is meshed with the gear transmission assembly.

[0009] Preferably, the escapement mechanism includes an escapement wheel component and an escapement fork component, wherein: the escapement wheel component can be rotatably arranged in the housing mechanism, the escapement wheel component includes an escapement wheel body and a third gear body that are integrally arranged, and the third gear body is engaged with the gear transmission assembly; the escapement fork component can be swingably arranged in the housing mechanism, the escapement fork component includes a swinging plate, and fork columns are arranged on both sides of the central axis of the swinging plate.

[0010] Preferably, the mechanical time-delay timing device further comprises an auxiliary force storage mechanism, and the valve core mechanism is connected to the auxiliary force storage mechanism.

[0011] Preferably, a mounting groove is provided in the valve body mechanism, and the valve core mechanism can be rotatably provided in the mounting groove; a first straight tube and a second straight tube are radially provided on the valve body mechanism, the first straight tube and the second straight tube are symmetrically provided with respect to the mounting groove, and both the first straight tube and the second straight tube are connected with the mounting groove; a connecting hole is provided on the valve core mechanism, and the valve core mechanism can be rotated to enable the first straight tube to be connected with the second straight tube through the connecting hole, and the first straight tube, the connecting hole and the second straight tube form a straight flow channel.

[0012] Preferably, a first bypass branch is provided on the valve body mechanism, and the first straight pipe is connected to the mounting groove through the first bypass branch; a second bypass branch is provided on the valve body mechanism, and the second straight pipe is connected to the mounting groove through the second bypass branch; a connecting groove is provided on the valve core mechanism, and the valve core mechanism rotates to enable the first bypass branch to be connected to the second bypass branch through the connecting groove, and the first bypass branch, the connecting groove and the second bypass branch form a bypass flow channel.

[0013] Preferably, the valve core mechanism includes a valve core body and a valve stem, the valve core body is rotatably arranged in the valve body mechanism, the first end of the valve stem passes through the mechanical delay timing device and is plugged into the valve core body, and the second end of the valve stem is detachably connected to the knob; a limit piece is sleeved on the valve core body, and the limit piece rotates synchronously with the valve core body, a limit block is arranged inside the valve body mechanism, and the rotation of the valve core body can cause the limit piece to counteract the limit block.

[0014] The present invention provides a gas stove, comprising any one of the above-mentioned normally open delayed timing switch valves.

[0015] The normally open delayed timing switch valve provided by the present invention has at least the following beneficial effects: The normally open time-delay timing switch valve comprises a mechanical time-delay timing device and a valve device. The valve device is used for on-off control of the gas pipeline. The mechanical time-delay timing device can realize the delay, timed conduction and disconnection of the valve device.

[0016] The mechanical delay timing device includes an elastic force storage mechanism, a gear transmission mechanism and an escapement mechanism. The elastic force storage mechanism is connected to the escapement mechanism through a gear transmission mechanism. It adopts a pure mechanical timing structure. On the basis of ensuring the delay timing opening and closing, it does not require an external power supply. It is not only highly environmentally applicable, practical and durable, but also convenient for delay timing operation and later maintenance.

[0017] The valve device includes a valve body mechanism and a valve core mechanism. The valve core mechanism can be rotatably arranged in the valve body mechanism and can open and close the internal flow channel of the valve body mechanism. The valve core mechanism is connected to the elastic force storage mechanism. When in use, the elastic force storage mechanism is force stored by rotating the valve core mechanism. The elastic force storage mechanism cooperates with the gear transmission mechanism and the escapement mechanism to slowly release potential energy, thereby driving the valve core mechanism to move slowly, thereby realizing the delay and timed opening and closing of the internal flow channel of the valve body mechanism.

[0018] The present invention realizes slow rotation of the valve core mechanism by slowly releasing the potential energy of the elastic force storage mechanism, thereby realizing the delayed timing on and off of the flow channel inside the valve body mechanism. Not only does it have a significant delayed timing on and off effect, it can effectively reduce safety hazards and improve the safety and reliability of the gas stove. Moreover, it adopts a mechanical delayed timing structure, which has the advantages of strong environmental applicability, practicality and durability, easy operation and convenience for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structural decomposition of the present invention; Figure 3 It is a structural schematic diagram of the mechanical time delay timing device of the present invention; Figure 4 It is a schematic diagram of the structure of the elastic force storage mechanism, the gear transmission mechanism and the escapement mechanism from a top view of the present invention; Figure 5 It is a structural schematic diagram of the coil spring of the present invention; Figure 6 It is a schematic structural diagram of the ratchet pawl assembly of the present invention; Figure 7 It is a schematic structural diagram of the escapement mechanism of the present invention; Figure 8 It is a structural schematic diagram of the valve device of the present invention; Fig. 9 It is a structural schematic diagram of the upper valve body of the present invention; Fig.10 It is a structural schematic diagram of the lower valve body of the present invention; Fig.11 It is a schematic diagram of the structure of the limiter of the present invention; Fig.12 It is a structural schematic diagram of the valve core body of the present invention.

[0021] Reference numerals 1. Mechanical time delay timing device; 11. Elastic force storage mechanism; 111. Engagement groove; 12. Gear transmission mechanism; 121. Ratchet pawl assembly; 1211. Pawl body; 1212. First gear body; 1213. Ratchet sleeve body; 1214. Second gear body; 122. Gear transmission assembly; 13. Escapement mechanism; 131. Escape wheel component; 1311. Escape wheel body; 1312. Third gear body; 132. Escape fork component; 1321. Swinging piece; 1322. Fork column; 14. Shell mechanism; 15. Auxiliary force storage mechanism; 2. Valve device; 21. Valve body mechanism; 211. Upper valve body; 2111. Limit block; 2112. Mounting pipe; 212. Lower valve body; 2121. First straight pipe; 2122. Second straight pipe; 2123. First bypass branch pipe; 2124. Second bypass branch pipe; 22. Valve core mechanism; 221. Valve stem; 222. Valve core body; 2221. Connecting hole; 2222. Connecting groove; 223. Limit piece; 2231. Limit rod; 3. Knob. DETAILED DESCRIPTION

[0022] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0023] Embodiment 1: The present invention provides a normally open type time-delayed timing switch valve, referring to Figures 1 to 12 As shown, the normally open time-delay timing switch valve includes a mechanical time-delay timing device 1 and a valve device 2.

[0024] The mechanical time delay timing device 1 comprises an elastic force storage mechanism 11 , a gear transmission mechanism 12 and an escapement mechanism 13 . The elastic force storage mechanism 11 is connected to the escapement mechanism 13 via the gear transmission mechanism 12 .

[0025] The valve device 2 includes a valve body mechanism 21 and a valve core mechanism 22 . The valve core mechanism 22 is rotatably disposed in the valve body mechanism 21 and can open and close the internal flow channel of the valve body mechanism 21 . The valve core mechanism 22 is connected to the elastic force storage mechanism 11 .

[0026] When in use, the valve core mechanism 22 is rotated, and the valve core mechanism 22 drives the elastic force storage mechanism 11 to deform, and at this time the elastic force storage mechanism 11 stores energy.

[0027] Afterwards, the deformed elastic force storage mechanism 11 drives the escapement mechanism 13 to move through the gear transmission mechanism 12, and the escapement mechanism 13 and the gear transmission mechanism 12 cooperate with each other to slowly release the potential energy of the elastic force storage mechanism 11, thereby causing the valve core mechanism 22 to slowly rotate, thereby achieving delayed and timed conduction or disconnection of the internal flow channel of the valve body mechanism 21.

[0028] The present invention not only has a significant effect of delayed timing on and off, can effectively reduce safety hazards, and improve the safety and reliability of the gas stove during use, but also adopts a mechanical delayed positioning structure, has strong environmental adaptability, is practical and durable, and is easy to operate and convenient for later maintenance.

[0029] Example 2 Example 2 is based on Example 1: like Figures 1 to 12 As shown, the mechanical time delay timing device 1 comprises a housing mechanism 14, and the housing mechanism 14 comprises a bottom shell and a housing detachably arranged on the bottom shell, and a mounting cavity is arranged inside the bottom shell and the housing.

[0030] The bottom shell and the shell are detachably connected to the valve body mechanism 21 through threaded fasteners; the elastic force storage mechanism 11, the gear transmission mechanism 12 and the escapement mechanism 13 are all arranged inside the installation cavity, and the valve core mechanism 22 passes through the shell mechanism 14.

[0031] The housing mechanism 14 is used for installing and protecting the elastic force storage mechanism 11, the gear transmission mechanism 12 and the escapement mechanism 13 on the one hand, and is connected to the valve device 2 on the other hand, making the whole structure more compact.

[0032] As an optional implementation, the elastic force storage mechanism 11 includes a coil spring and an input gear, wherein the coil spring is disposed in the housing mechanism 14 ; the input gear is sleeved on the valve core mechanism 22 and rotates synchronously with the valve core mechanism 22 .

[0033] The input gear is provided with a hanging part, and the coil spring is provided with a hanging part at a position corresponding to the hanging part, and the hanging part is hung and connected with the hanging part. Specifically, the hanging part is configured as a hanging hook, and the hanging part is configured as a hanging groove 111.

[0034] The hanging structure is adopted, and on the premise of ensuring the reliable connection between the coil spring and the input gear, the assembly and disassembly is convenient, and the later maintenance is convenient.

[0035] As an optional embodiment, the gear transmission mechanism 12 includes a ratchet pawl assembly 121 and a gear transmission assembly 122. The ratchet pawl assembly 121 has the characteristic of unidirectional rotation. Only when the elastic force storage mechanism 11 releases potential energy can it drive the gear transmission assembly 122 and the escapement mechanism 13 to move, thereby effectively ensuring the force storage effect.

[0036] The ratchet pawl assembly 121 includes a pawl component and a ratchet component, and the pawl component and the ratchet component are coaxially rotatably arranged in the housing mechanism 14; the pawl component includes an integrally arranged pawl body 1211 and a first gear body 1212, and the first gear body 1212 is meshed with the input gear; the ratchet component includes an integrally arranged ratchet sleeve body 1213 and a second gear body 1214, and the interior of the ratchet sleeve body 1213 is evenly provided with ratchet teeth along the circumferential direction, and the pawl body 1211 is arranged inside the ratchet sleeve body 1213.

[0037] When the coil spring is storing energy, the valve core mechanism 22 is rotated in the positive direction, and the input gear is rotated to deform the coil spring to store energy. During this process, the pawl component and the ratchet component rotate relative to each other.

[0038] When the deformed coil spring releases its potential energy, the coil spring drives the input gear to rotate, and the input gear drives the pawl member to rotate. At this time, the pawl member engages with the ratchet member, and the ratchet member rotates synchronously with the pawl member, thereby transmitting power to the gear transmission assembly 122 and the escapement mechanism 13, thereby realizing the slow release of the potential energy of the coil spring.

[0039] The ratchet component and the pawl component cooperate with each other, and through their unidirectional rotation effect, the coil spring can only release potential energy to drive the gear transmission assembly 122 and the escapement mechanism 13 to move, and the delay timing effect is significant.

[0040] The gear transmission assembly 122 includes a plurality of transmission gears meshing in sequence, wherein the transmission gears are double gears, wherein the diameter of the input gear is larger than the diameter of the first gear body, and the diameter of the second gear body is larger than the diameter of the first gear body. Along the transmission direction, the second gear body meshes with the pinion gear of its downstream transmission gear, and the large gear of the upstream transmission gear meshes with the pinion gear of the downstream transmission gear. When the coil spring is tightened, a large amount of potential energy is stored. When released, the coil spring drives the input gear to rotate. Since the diameter of the input gear is large, its rotation speed is relatively slow, so it requires a smaller force to drive. At the same time, the pinion gear of the double gear meshing with it has a smaller diameter and a faster rotation speed, but requires a larger force to drive. In this way, the energy is gradually decelerated during the release process, thereby achieving slow release.

[0041] As an optional embodiment, the escapement mechanism 13 includes an escapement wheel member 131 and a pallet fork member 132 .

[0042] The escapement wheel component 131 can be rotatably arranged in the housing mechanism 14, and the escapement wheel component 131 includes an escapement wheel body 1311 and a third gear body 1312 which are integrally arranged, and the third gear body 1312 is engaged with the gear transmission assembly 122; the escapement fork component 132 can be swingably arranged in the housing mechanism 14, and the escapement fork component 132 includes a swinging plate 1321, and fork columns 1322 are arranged on both sides of the central axis of the swinging plate 1321.

[0043] When the gear transmission assembly 122 drives the escape wheel component 131 to rotate, the escape wheel component 131 abuts against the two symmetrically distributed fork columns 1322 in turn, so that the swing plate 1321 swings back and forth, thereby realizing the slow release of energy.

[0044] As an optional implementation, the mechanical time-delay timing device 1 further includes an auxiliary force storage mechanism 15 , and the valve core mechanism 22 is connected to the auxiliary force storage mechanism 15 .

[0045] The auxiliary force storage mechanism 15 includes a bottom shell, in which an auxiliary coil spring and an auxiliary gear are arranged. The structure thereof is the same as that of the elastic force storage mechanism 11 . The auxiliary force storage mechanism 15 is also used for energy storage.

[0046] As an optional embodiment, the valve body mechanism 21 includes an upper valve body 211 and a lower valve body 212 detachably connected to the lower side of the upper valve body 211, and a mounting groove is provided in the lower valve body 212. The valve core mechanism 22 can be rotatably disposed in the mounting groove. The valve core mechanism 22 can realize on-off control of the internal flow channel of the valve body mechanism 21 by rotating.

[0047] A first straight pipe 2121 and a second straight pipe 2122 are radially arranged on the lower valve body 212 , and the first straight pipe 2121 and the second straight pipe 2122 are symmetrically arranged relative to the installation groove. The first straight pipe 2121 and the second straight pipe 2122 are both connected to the installation groove, and a connecting hole 2221 is arranged on the valve core mechanism 22 .

[0048] When the valve core mechanism 22 rotates until the connecting hole 2221 corresponds to the first straight pipe 2121 and the second straight pipe 2122, the first straight pipe 2121 is connected to the second straight pipe 2122 through the connecting hole 2221, and the straight flow channel formed by the first straight pipe 2121, the connecting hole 2221 and the second straight pipe 2122 is connected.

[0049] When the valve core mechanism 22 rotates until the communicating hole 2221 is offset from the first straight pipe 2121 and the second straight pipe 2122 , the straight flow channel is disconnected.

[0050] As an optional embodiment, a first bypass branch 2123 is provided on the lower valve body 212, and the first straight pipe 2121 is connected to the installation groove through the first bypass branch 2123; a second bypass branch 2124 is provided on the lower valve body 212, and the second straight pipe 2122 is connected to the installation groove through the second bypass branch 2124; a connecting groove 2222 is provided on the valve core mechanism 22.

[0051] When the valve core mechanism 22 rotates to the connecting groove 2222 corresponding to the first bypass branch 2123 and the second bypass branch 2124, the first bypass branch 2123 is connected to the second bypass branch 2124 through the connecting groove 2222, and the bypass flow channel formed by the first bypass branch 2123, the connecting groove 2222 and the second bypass branch 2124 is connected.

[0052] When the valve core mechanism 22 rotates until the communicating groove 2222 is offset from the first bypass branch pipe 2123 and the second bypass branch pipe 2124 , the bypass flow channel is disconnected.

[0053] The direction of the connecting hole 2221 and the opposite direction of the connecting groove 2222 are set at an angle, so that various states of straight flow channel conduction, bypass flow channel conduction and flow channel blocking can be formed.

[0054] In actual application, the setting of the delayed timing on-off state is achieved by setting the initial state of the elastic force storage mechanism 11 and the initial state of the valve core mechanism 22 .

[0055] As an optional embodiment, the valve core mechanism 22 includes a valve core body 222 and a valve stem 221. The valve core body 222 is configured as a truncated cone structure with a large top diameter and a small bottom diameter. The mounting groove is adapted to the shape of the valve core body 222. The valve core body 222 is rotatably disposed in the valve body mechanism 21. The first end of the valve stem 221 passes through the mechanical delay timing device 1 and is plugged into the valve core body 222. The second end of the valve stem 221 is detachably connected to the knob 3. The knob 3, the valve stem 221 and the valve core body 222 rotate synchronously. The elastic force storage mechanism 11 and the auxiliary force storage mechanism 15 are both fixedly mounted on the valve stem 221.

[0056] The valve core body 222 is sleeved with a limit piece 223 , which is configured as a limit ring. A limit rod 2231 is integrally provided on the limit ring. The limit piece 223 rotates synchronously with the valve core body 222 . A limit block 2111 is provided on the inner wall of the upper valve body 211 .

[0057] During the rotation of the valve core body 222 , the limiting rod 2231 can abut against the limiting block 2111 .

[0058] The limiting member 223 and the limiting block 2111 cooperate with each other, and the limiting effect is significant, which can effectively limit the extreme rotation angle of the valve core mechanism 22, thereby avoiding excessive deformation of the coil spring.

[0059] As an optional embodiment, a mounting tube 2112 is connected to the outer wall of the upper valve body 211, and a sealing plate is installed at the end of the mounting tube 2112 away from the upper valve body 211 through a threaded fastener. A spring is arranged inside the mounting tube 2112, one end of the spring is connected to the sealing plate, and the other end of the spring is provided with a limiting steel ball. The spring and the limiting steel ball cooperate with each other. Under the premise of not affecting the storage of force and energy by the elastic force storage mechanism 11, when used in the delayed timing state, the limiting rod 2231 abuts against the limiting steel ball to achieve the limitation of the rotation action of the valve core mechanism 22.

[0060] In actual application, when the knob 3 is rotated to store force on the elastic force storage mechanism 11, the limit rod 2231 on the limit member 223 overcomes the elastic force of the spring to squeeze and pass over the limit steel ball to complete energy storage. At this time, the limit steel ball extends out under the action of the spring; when the elastic force storage mechanism 11 slowly releases its potential, the limit member 223 rotates with the valve core mechanism 22 until the limit rod 2231 and the limit steel ball are against each other, the rotation action of the valve core mechanism 22 ends, and the internal flow channel of the valve body mechanism 21 is blocked, so as to realize the delayed and timed disconnection of the switch valve, and effectively ensure the safety and reliability of use.

[0061] Embodiment 3: Example 3 is based on Example 2: The present invention provides a gas stove, which comprises the normally-on type delayed timing switch valve.

[0062] The gas stove with the normally-on delayed timing switch valve can realize delayed timing on and off of gas, can effectively reduce potential safety hazards, and is safe and reliable to use.

[0063] In the description of the present application, it should be understood that the terms "upper", "lower", "inside", "outside", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0066] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A normally open delayed timing switch valve, characterized in that: It includes a mechanical time delay timing device and a valve device, wherein: The mechanical time delay timing device comprises an elastic force storage mechanism, a gear transmission mechanism and an escapement mechanism, wherein the elastic force storage mechanism is connected to the escapement mechanism through the gear transmission mechanism; The valve device comprises a valve body mechanism and a valve core mechanism, wherein the valve core mechanism is rotatably arranged in the valve body mechanism and can open and close the internal flow channel of the valve body mechanism; The valve core mechanism is connected to the elastic force storage mechanism.

2. The normally open delayed timing switch valve according to claim 1, characterized in that: The mechanical time delay timing device comprises a housing mechanism, wherein: The housing mechanism is detachably connected to the valve body mechanism; The elastic force storage mechanism, the gear transmission mechanism and the escapement mechanism are all arranged inside the housing mechanism, and the valve core mechanism passes through the housing mechanism.

3. The normally open delayed timing switch valve according to claim 2 is characterized in that: The elastic force storage mechanism comprises a coil spring and an input gear, wherein: The coil spring is disposed in the housing mechanism; The input gear is sleeved on the valve core mechanism and rotates synchronously with the valve core mechanism. The input gear is provided with a hanging part. The coil spring is provided with a hanging part at a position corresponding to the hanging part. The hanging part is hung and connected with the hanging part.

4. The normally open time-delayed time switch valve according to claim 3 is characterized in that: The gear transmission mechanism comprises a ratchet pawl assembly and a gear transmission assembly, wherein: The ratchet pawl assembly includes a pawl member and a ratchet member, and the pawl member and the ratchet member are coaxially rotatably arranged in the housing mechanism; the pawl member includes an integral pawl body and a first gear body, and the first gear body is meshed with the input gear; the ratchet member includes an integral ratchet sleeve body and a second gear body, and the interior of the ratchet sleeve body is evenly provided with ratchet teeth along the circumferential direction, the pawl body is arranged in the ratchet sleeve body, and can rotate unidirectionally relative to the ratchet sleeve body, and the second gear body is meshed with the gear transmission assembly.

5. The normally open delayed timing switch valve according to claim 4, characterized in that: The escapement mechanism comprises an escapement wheel component and an escapement fork component, wherein: The escape wheel component is rotatably disposed in the housing mechanism, and the escape wheel component includes an escape wheel body and a third gear body that are integrally disposed, and the third gear body is meshed with the gear transmission assembly; The pallet fork component is swingably arranged in the housing mechanism, and the pallet fork component comprises a swinging plate, and fork columns are arranged on both sides of the central axis of the swinging plate.

6. The normally open delayed timing switch valve according to claim 1, characterized in that: The mechanical time-delay timing device further comprises an auxiliary force storage mechanism, and the valve core mechanism is connected to the auxiliary force storage mechanism.

7. The normally open delayed timing switch valve according to claim 1, characterized in that: The valve body mechanism is provided with a mounting groove, and the valve core mechanism is rotatably arranged in the mounting groove; A first straight pipe and a second straight pipe are radially arranged on the valve body mechanism, the first straight pipe and the second straight pipe are symmetrically arranged relative to the installation groove, and the first straight pipe and the second straight pipe are both connected to the installation groove; The valve core mechanism is provided with a connecting hole. When the valve core mechanism rotates, the first straight pipe can be connected with the second straight pipe through the connecting hole. The first straight pipe, the connecting hole and the second straight pipe form a straight flow channel.

8. The normally open time-delayed time switch valve according to claim 7, characterized in that: The valve body mechanism is provided with a first bypass branch pipe, and the first straight pipe is connected with the installation groove through the first bypass branch pipe; The valve body mechanism is provided with a second bypass branch pipe, and the second straight pipe is connected with the installation groove through the second bypass branch pipe; The valve core mechanism is provided with a connecting groove. When the valve core mechanism rotates, the first bypass branch pipe can be connected with the second bypass branch pipe through the connecting groove. The first bypass branch pipe, the connecting groove and the second bypass branch pipe form a bypass flow channel.

9. The normally open time-delayed time-on / off valve according to claim 1, characterized in that: The valve core mechanism comprises a valve core body and a valve stem, wherein the valve core body is rotatably arranged in the valve body mechanism, a first end of the valve stem passes through the mechanical time delay timing device and is plugged into the valve core body, and a second end of the valve stem is detachably connected to a knob; A limit piece is sleeved on the valve core body, and the limit piece rotates synchronously with the valve core body. A limit block is arranged inside the valve body mechanism, and the limit piece and the limit block can be abutted against each other when the valve core body rotates.

10. A gas stove, characterized in that: It comprises the normally open delayed timing switch valve according to any one of claims 1 to 9.

Images