Gear valve and stove

Abstract

The utility model relates to the technical field of stoves, in particular to a gear valve and a stove. The gear valve comprises a valve body, a first valve cover, a second valve cover, a valve rod, a gear disc and a positioning piece, a valve element is installed in the valve body, the first valve cover covers the valve body, the second valve cover covers the first valve cover, and the first valve cover is provided with a sliding sleeve in a protruding mode towards the second valve cover. The gear disc is installed between the sliding sleeve and the second valve deck, and the positioning piece is installed on the side, facing the gear disc, of the sliding sleeve. The valve rod sequentially penetrates through the second valve cover, the gear disc, the sliding sleeve and the first valve cover and extends into the valve body to be connected with the valve element, and the valve rod drives the gear disc and the valve element to synchronously rotate and enables the gear disc to be matched with the positioning piece to achieve gear shifting. According to the utility model, the vertical installation of the positioning piece is realized, and the transverse installation area of the first valve cover is reduced; meanwhile, the valve rod is limited in the circumferential direction through the sliding sleeve, so that the valve rod is not prone to shaking or inclining, and the risks of uneven abrasion and rotating jamming of the valve rod are reduced.

Description

Technical Field

[0001] This utility model relates to the field of stove technology, and in particular to a gear valve and a stove. Background Technology

[0002] The gas stove used in the kitchen controls the gas supply and cut-off by manually pressing and turning the gear valve on the stove. The valve rod in the gear valve can be rotated at different angles according to the needs of use to adjust the gear of the stove and control the size of the flame.

[0003] A positioning element (usually a spring and a steel ball) is horizontally mounted on the valve cover of the gear shift valve. As the gear shift disc rotates with the valve stem, the steel ball elastically presses against different gear grooves on the disc under the action of the spring, thus realizing the gear shifting operation of the valve. Because the valve cover needs to have a horizontally protruding mounting structure for mounting the positioning element, the horizontal mounting area of ​​the valve cover is increased, making the gear shift valve inconvenient to install. Moreover, the valve stem is prone to wobbling or tilting during rotation and gear shifting, leading to risks such as uneven wear of the valve stem and rotation jamming. Utility Model Content

[0004] One of the technical problems solved by this utility model is to provide a gear valve that can effectively solve the technical problems in the prior art where the installation structure of the horizontally arranged mounting positioning component on the valve cover leads to an increase in the horizontal installation area of ​​the gear valve, and the valve stem is prone to uneven wear and rotation jamming.

[0005] The second technical problem solved by this utility model is to provide a stove that can effectively solve the technical problems in the prior art where the installation structure of the horizontally arranged mounting positioning component on the valve cover leads to an increase in the horizontal installation area of ​​the gear valve, and the valve stem is prone to uneven wear and rotation jamming.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A gear shift valve includes a valve body, a first valve cover, a second valve cover, a valve stem, a gear shift disc, and a positioning element. A valve core is installed inside the valve body. The first valve cover covers the valve body, and the second valve cover covers the first valve cover. A sliding sleeve protrudes from the first valve cover toward the second valve cover. The gear shift disc is installed between the sliding sleeve and the second valve cover, and the positioning element is installed on the side of the sliding sleeve facing the gear shift disc.

[0008] The valve stem passes sequentially through the second valve cover, the gear shift plate, the sliding sleeve, and the first valve cover, and extends into the valve body to connect with the valve core. The valve stem is configured to drive the gear shift plate and the valve core to rotate synchronously, and to enable the gear shift plate to cooperate with the positioning component to achieve gear changing.

[0009] The gear valve described in this utility model has the following advantages compared with the prior art:

[0010] The first valve cover has a sliding sleeve protruding along the axial direction. The positioning element is installed on the sliding sleeve along the axial direction of the first valve cover, which realizes the vertical installation of the positioning element relative to the valve stem in the gear valve. This makes the overall installation of the gear valve more compact. At the same time, there is no need to add an extra horizontal installation structure on the first valve cover, which simplifies the structure of the first valve cover, reduces the horizontal installation area of ​​the first valve cover, and facilitates the installation of the gear valve.

[0011] By protruding a sliding sleeve on the first valve cover, the contact area between the valve stem and the first valve cover is increased, and the valve stem is circumferentially limited by the sliding sleeve, thereby effectively preventing the valve stem from shaking or tilting during rotation shifting, and thus reducing the risk of uneven wear and rotation jamming of the valve stem.

[0012] In one embodiment, the sliding sleeve has a mounting portion with a mounting hole; the mounting hole extends axially through one side of the mounting portion, and the positioning member is mounted in the mounting hole.

[0013] In one embodiment, the positioning member includes an elastic element and a ball head. The gear shift plate has a plurality of gear slots circumferentially opened on the side facing the sliding sleeve. The elastic element is disposed in the mounting hole and elastically supports the ball head. The gear shift plate rotates circumferentially along the sliding sleeve so that the ball head is engaged or slid out of the corresponding gear slot.

[0014] In one embodiment, the gear shift disk has a through hole along the axial direction, and a plurality of gear shift slots are arranged at circumferential intervals along the through hole;

[0015] The valve stem has a first tangent plane on its circumferential side, and the inner wall of the through hole has a corresponding second tangent plane. The valve stem passes through the through hole, and the first tangent plane and the second tangent plane are fitted and connected.

[0016] In one embodiment, both the outer edge of the through hole and the outer edge of the gear plate are provided with retaining edges extending toward the sliding sleeve, and the two retaining edges form a limiting channel for the ball head to roll on the side of the gear plate where the gear groove is opened.

[0017] In one embodiment, the first valve cover is provided with a switching assembly having a resilient contact, the switching assembly being configured to open when the resilient contact is triggered.

[0018] The sliding sleeve has an axially arranged inner hole for the valve stem to pass through, and the sliding sleeve also has a relief opening communicating with the inner hole, into which the elastic contact extends; the valve stem is configured to move along the axial direction of the sliding sleeve and trigger the elastic contact.

[0019] In one embodiment, the valve stem has an ignition groove, and the elastic contact is elastically engaged in the ignition groove; the valve stem moves axially along the sliding sleeve and pushes the elastic contact out of the ignition groove, and the elastic contact is triggered and elastically presses against the circumferential side of the valve stem.

[0020] In one embodiment, the first valve cover is provided with a guide post, and the switch assembly is sleeved on the guide post and fixedly installed on the first valve cover.

[0021] In one embodiment, the valve stem is provided with a protrusion, and a limit block is provided on the side of the first valve cover opposite to the sliding sleeve. The protrusion abuts against the limit block to limit the maximum rotation angle of the valve stem along the circumference of the sliding sleeve.

[0022] The second technical problem mentioned above is solved by the following technical solution:

[0023] The stove, including the aforementioned gear valve.

[0024] The stove described in this utility model has the following advantages compared with the prior art:

[0025] The first valve cover has a sliding sleeve protruding along the axial direction. The positioning element is installed on the sliding sleeve along the axial direction of the first valve cover, realizing the vertical installation of the positioning element in the gear valve. This makes the installation of the positioning element more compact. At the same time, there is no need to add an extra horizontal installation structure on the first valve cover, which simplifies the structure of the stove, reduces the horizontal installation area of ​​the first valve cover, and facilitates the installation of the stove.

[0026] By protruding a sliding sleeve on the first valve cover, the contact area between the valve stem and the first valve cover is increased, and the valve stem is circumferentially limited by the sliding sleeve, thereby preventing the valve stem from shaking or tilting during rotation shifting, and reducing the risk of uneven wear and rotation jamming of the valve stem. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the gear valve provided in an embodiment of the present invention;

[0028] Figure 2 This is a partial exploded view of the gear valve provided in an embodiment of the present utility model;

[0029] Figure 3 This is a partial structural cross-sectional view of the gear valve provided in this embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the first valve cover provided in this embodiment of the utility model;

[0031] Figure 5This is a schematic diagram of the gear shift panel provided in an embodiment of the present utility model;

[0032] Figure 6 This is a partial structural schematic diagram of the gear valve provided in this embodiment of the utility model.

[0033] The component names and labels in the diagram are as follows:

[0034] 1. Valve body; 2. First valve cover; 21. Sliding sleeve; 211. Inner hole; 212. Relief port; 213. Mounting hole; 22. Guide post; 23. Assembly hole; 24. Limiting block; 3. Second valve cover; 4. Valve stem; 41. Ignition groove; 42. First tangential plane; 43. Protrusion; 44. Toggle block; 5. Gear plate; 51. Gear groove; 52. Through hole; 521. Second tangential plane; 53. Edge retainer; 6. Elastic element; 7. Ball head; 8. Valve core; 9. Switch assembly; 91. Elastic contact. Detailed Implementation

[0035] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] like Figure 1As shown in the figure, this embodiment proposes a stove, which is a gas stove for kitchen use. The stove controls the cut-off and supply of gas source by manually pressing and turning the gear valve. According to the usage needs, the valve rod 4 in the gear valve can be rotated at different angles to realize the gear adjustment of the stove to control the flame size.

[0040] Existing gear shift valves have a laterally mounted positioning element (usually a spring and a steel ball) on the valve cover. As the gear shift disc rotates with the valve stem, the steel ball elastically presses against different gear grooves on the disc under the action of the spring, thus realizing the gear shifting operation. Because the valve cover needs a laterally protruding mounting structure for the positioning element, the lateral mounting area of ​​the valve cover is increased, making the gear shift valve inconvenient to install. Furthermore, the valve stem is prone to wobbling or tilting during rotational gear shifting, leading to uneven wear and the risk of rotational jamming.

[0041] To solve the above problems, such as Figures 1-3 As shown in the figure, this embodiment also proposes a gear shift valve, which includes a valve body 1, a first valve cover 2, a second valve cover 3, a valve stem 4, a gear shift disc 5, and a positioning element. A valve core 8 is installed inside the valve body 1. The first valve cover 2 covers the valve body 1, and the second valve cover 3 covers the first valve cover 2. A sliding sleeve 21 protrudes from the first valve cover 2 towards the second valve cover 3. The gear shift disc 5 is installed between the sliding sleeve 21 and the second valve cover 3, and the positioning element is installed on the side of the sliding sleeve 21 facing the gear shift disc 5. The valve stem 4 passes sequentially through the second valve cover 3, the gear shift disc 5, the sliding sleeve 21, and the first valve cover 2, and extends into the valve body 1 to connect with the valve core 8. The valve stem 4 drives the gear shift disc 5 to rotate synchronously with the valve core 8, and the gear shift disc 5 cooperates with the positioning element to achieve gear shifting.

[0042] In this embodiment, a sliding sleeve 21 protrudes axially from the first valve cover 2. The positioning member is installed on the sliding sleeve 21 axially from the first valve cover 2, realizing the vertical installation of the positioning member inside the gear shift valve. This makes the installation of the positioning member more compact and eliminates the need for an additional lateral installation structure on the first valve cover 2, simplifying the structure of the first valve cover 2, reducing the lateral installation area of ​​the first valve cover 2, and facilitating the installation of the gear shift valve. By protruding the sliding sleeve 21 on the first valve cover 2, the contact area between the valve stem 4 and the first valve cover 2 is increased, and the sliding sleeve 21 provides circumferential limiting for the valve stem 4, thereby preventing the valve stem 4 from shaking or tilting during rotational gear shifting, reducing the risk of uneven wear and rotational jamming of the valve stem 4.

[0043] When the valve stem 4 is pressed down from top to bottom in the vertical direction shown in the figure, the stove ignition is controlled. Simultaneously, the valve stem 4 drives the gear shift disc 5 and the valve core 8 to rotate circumferentially along the sliding sleeve 21 to select different gears, thereby controlling the supply of the gas mixture (gas and air). Specifically, the valve core 8 is installed inside the valve body 1, and the valve stem 4 is equipped with a lever 44. The valve core 8 has a groove, and the lever 44 is inserted into the groove to achieve the connection between the valve stem 4 and the valve core 8. This allows the valve stem 4 to rotate synchronously with the valve core 8 during gear shifting, and the flow rate of the gas mixture is adjusted through a small hole (not shown in the figure) on the outer circumference of the valve core 8, corresponding to different gears on the gear shift disc 5. Since the valve core 8 is existing technology, its structure and operation will not be described in detail.

[0044] like Figure 2 and Figure 3 As shown, the first valve cover 2 is provided with a switch assembly 9, which has a resilient contact 91. The switch assembly 9 opens when the resilient contact 91 is triggered. The sliding sleeve 21 has an axially arranged inner hole 211 through which the valve stem 4 passes. The sliding sleeve 21 also has a clearance opening 212 communicating with the inner hole 211, into which the resilient contact 91 extends. The valve stem 4 moves axially along the sliding sleeve 21 and triggers the resilient contact 91. In this embodiment, the switch assembly 9 is a microswitch, which controls the ignition of the stove. The switch assembly 9 is installed on the first valve cover 2, achieving a compact installation. When the valve stem 4 is pressed downwards, the valve stem 4 moves downwards axially along the sliding sleeve 21 and triggers the resilient contact 91, thereby controlling the microswitch to open. Optionally, the opening width of the clearance opening 212 is less than half the circumference of the sliding sleeve 21.

[0045] In one embodiment, the valve stem 4 has an ignition groove 41, and the elastic contact 91 elastically engages within the ignition groove 41. The valve stem 4 moves axially along the sliding sleeve 21, pushing the elastic contact 91 out of the ignition groove 41. The elastic contact 91 is then triggered and elastically presses against the circumferential side of the valve stem 4. Specifically, the ignition groove 41 is an annular groove surrounding the valve stem 4. The elastic contact 91 is a conical contact. Before the stove is turned on, the valve stem 4 and the elastic contact 91 are in their initial positions, at which point the elastic contact 91 elastically engages within the ignition groove 41. When the stove is turned on, the valve stem 4 is pressed downwards in the vertical direction, causing the valve stem 4 to move downwards axially along the sliding sleeve 21. This causes the sidewall of the ignition groove 41 to slide along the conical surface of the elastic contact 91 and press against it, pushing the pressed elastic contact 91 out of the ignition groove 41. At this point, the elastic contact 91 is triggered and elastically presses against the circumferential side of the valve stem 4. In addition, when the valve stem 4 moves downward, it compresses the spring inside the valve core 8. After the external force is removed, the valve stem 4 can be reset upward along the axis of the sliding sleeve 21 and move back to the initial position. The elastic contact 91 is then locked into the ignition groove 41 again.

[0046] like Figure 2 and Figure 4 As shown, the first valve cover 2 has an assembly hole 23, which can be threadedly connected to the assembly hole 23 by screws or other fasteners to fix the switch assembly 9 onto the first valve cover 2, achieving stable installation of the switch assembly 9. Furthermore, the first valve cover 2 is provided with a guide post 22, on which the switch assembly 9 is sleeved and fixedly installed. By providing the guide post 22, the switch assembly 9 can be rotated along the surface of the first valve cover 2 after being sleeved on the guide post 22 to quickly align with the assembly hole 23, achieving directional installation of the switch assembly 9 and improving installation efficiency.

[0047] like Figure 3 and Figure 4 As shown, the sliding sleeve 2 has a mounting portion with a mounting hole 213. The mounting hole 213 extends axially through one side of the mounting portion, and a positioning element is installed in the mounting hole 213. The positioning element includes an elastic element 6 and a ball head 7. The shift plate 5 has multiple shift grooves 51 circumferentially formed on the side facing the sliding sleeve 21. The elastic element 6 is disposed in the mounting hole 213 and elastically supports the ball head 7. The shift plate 5 rotates circumferentially along the sliding sleeve 21, causing the ball head 7 to engage or disengage from the corresponding shift groove 51. Since the mounting hole 213 is axially arranged along the sliding sleeve 21, vertical installation of the elastic element 6 is achieved. In this embodiment, the elastic element 6 is a spring, which has a simple structure and is easy to install and use. The spring provides elastic support for the ball head 7, allowing the ball head 7 to extend and retract within the mounting hole 213. When the shift plate 5 rotates circumferentially along the sliding sleeve 21 to a certain position with the valve stem 4, the ball head 7 can engage in the corresponding shift groove 51 under the support of the elastic element 6. When the gear shift disc 5 rotates circumferentially along the sliding sleeve 21 with the valve stem 4 and adjusts the gear, the inner wall of the gear shift groove 51 where the ball head 7 is located presses the ball head 7 downward and compresses the elastic element 6, causing the ball head 7 to slide out of the corresponding gear shift groove 51. The gear shifting operation of the stove is realized through the cooperation of the positioning element and the gear shift disc 5, making the gear shifting operation simple and easy.

[0048] like Figure 2 and Figure 5 As shown, the gear shift disc 5 has a through hole 52 along its axial direction, and multiple gear shift slots 51 are spaced apart circumferentially along the through hole 52. A first tangent plane 42 is formed on the circumferential side of the valve stem 4, and a second tangent plane 521 is correspondingly formed on the inner sidewall of the through hole 52. The valve stem 4 passes through the through hole 52, and the first tangent plane 42 and the second tangent plane 521 are fitted together. This fit and connection between the first tangent plane 42 and the second tangent plane 521 allows the valve stem 4 to drive the gear shift disc 5 to rotate circumferentially along the sleeve 21 without the need for additional connecting parts, thus avoiding interference with the axial movement of the valve stem 4 along the sleeve 21.

[0049] In one embodiment, both the outer edge of the through hole 52 and the outer edge of the gear shift disk 5 extend toward the sliding sleeve 21 and are provided with retaining edges 53. The two retaining edges 53 form a limiting channel for the ball head 7 to roll on the side of the gear shift disk 5 where the gear shift groove 51 is opened. Specifically, the two retaining edges 53 are annular, making the limiting channel an annular channel. When the gear shift disk 5 rotates with the valve stem 4, the ball head 7 rolls relative to each other in the limiting channel, causing the ball head 7 to selectively engage in one of the gear shift grooves 51. By circumferentially limiting the ball head 7 with the two retaining edges 53, the ball head 7 is prevented from coming off the top of the elastic member 6, ensuring a stable fit between the gear shift disk 5 and the positioning member, and improving the reliability of the gear shifting operation.

[0050] like Figure 6 As shown, the valve stem 4 is provided with a protrusion 43, and the first valve cover 2 has a limiting block 24 on the side opposite to the sliding sleeve 21. The protrusion 43 abuts against the limiting block 24 to limit the maximum rotation angle of the valve stem 4 along the circumference of the sliding sleeve 21. When the valve stem 4 rotates circumferentially along the sliding sleeve 21 to change gears, the protrusion 43 does not contact the limiting block 24. As the rotation angle of the valve stem 4 increases, the gear position of the stove gradually increases. When the valve stem 4 rotates to the maximum gear position, the protrusion 43 abuts against the limiting block 24, thereby preventing the valve stem 4 from continuing to rotate and ensuring the accuracy of the gear changing operation.

[0051] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gear position valve, characterized in that, The device includes a valve body (1), a first valve cover (2), a second valve cover (3), a valve stem (4), a gear shift disc (5), and a positioning component. A valve core (8) is installed inside the valve body (1). The first valve cover (2) covers the valve body (1), and the second valve cover (3) covers the first valve cover (2). A sliding sleeve (21) protrudes from the first valve cover (2) towards the second valve cover (3). The gear shift disc (5) is installed between the sliding sleeve (21) and the second valve cover (3). The positioning component is installed on the side of the sliding sleeve (21) facing the gear shift disc (5). The valve stem (4) passes through the second valve cover (3), the gear shift plate (5), the sliding sleeve (21) and the first valve cover (2) in sequence and extends into the valve body (1) to connect with the valve core (8). The valve stem (4) is configured to drive the gear shift plate (5) and the valve core (8) to rotate synchronously, and to make the gear shift plate (5) cooperate with the positioning member to realize gear shifting.

2. The gear valve according to claim 1, characterized in that, The sliding sleeve (21) has a mounting portion, the mounting portion is provided with a mounting hole (213), the mounting hole (213) extends axially through one side of the mounting portion, and the positioning member is mounted in the mounting hole (213).

3. The gear valve according to claim 2, characterized in that, The positioning element includes an elastic element (6) and a ball head (7). The gear plate (5) has multiple gear slots (51) circumferentially opened on the side facing the sliding sleeve (21). The elastic element (6) is disposed in the mounting hole (213) and elastically supports the ball head (7). The gear plate (5) rotates circumferentially along the sliding sleeve (21) so that the ball head (7) is engaged or slid out of the corresponding gear slot (51).

4. The gear valve according to claim 3, characterized in that, The gear plate (5) has a through hole (52) along the axial direction, and a plurality of gear slots (51) are arranged at intervals along the circumference of the through hole (52); The valve stem (4) has a first cutting plane (42) on its circumferential side, and the inner wall of the through hole (52) has a corresponding second cutting plane (521). The valve stem (4) passes through the through hole (52), and the first cutting plane (42) and the second cutting plane (521) are fitted and connected.

5. The gear valve according to claim 4, characterized in that, Both the outer edge of the through hole (52) and the outer edge of the gear plate (5) extend toward the sliding sleeve (21) and are provided with retaining edges (53). The two retaining edges (53) form a limiting channel for the ball head (7) to roll on the side of the gear plate (5) where the gear groove (51) is opened.

6. The gear valve according to claim 1, characterized in that, The first valve cover (2) is provided with a switch assembly (9), the switch assembly (9) having a resilient contact (91), the switch assembly (9) being configured to open when the resilient contact (91) is triggered; The sliding sleeve (21) is provided with an inner hole (211) along the axial direction for the valve stem (4) to pass through. The sliding sleeve (21) is also provided with a relief opening (212) communicating with the inner hole (211). The elastic contact (91) extends into the relief opening (212). The valve stem (4) is configured to move along the axial direction of the sliding sleeve (21) and trigger the elastic contact (91).

7. The gear valve according to claim 6, characterized in that, The valve stem (4) has an ignition groove (41), and the elastic contact (91) is elastically inserted into the ignition groove (41); the valve stem (4) moves along the axial direction of the sliding sleeve (21) and pushes the elastic contact (91) to slide out of the ignition groove (41), and the elastic contact (91) is triggered and elastically presses against the circumferential side of the valve stem (4).

8. The gear valve according to claim 6, characterized in that, The first valve cover (2) is provided with a guide post (22), and the switch assembly (9) is sleeved on the guide post (22) and fixedly installed on the first valve cover (2).

9. The gear valve according to any one of claims 1 to 8, characterized in that, The valve stem (4) is provided with a protrusion (43), and the first valve cover (2) is provided with a limiting block (24) on the side away from the sliding sleeve (21). The protrusion (43) abuts against the limiting block (24) to limit the maximum rotation angle of the valve stem (4) circumferentially rotating along the sliding sleeve (21).

10. A stove, characterized in that, The valve includes any one of claims 1 to 9.

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