Ejection type quick-closing gas meter built-in valve

Abstract

The utility model provides an ejection type quick closing gas meter built-in valve, which belongs to the technical field of valves, and comprises a valve cover, a valve rod, a driving component and a driving shell, the driving component is arranged in the driving shell, a through hole is arranged on the valve cover, the driving shell comprises a connecting cylinder part, a first positioning groove communicated with the through hole is arranged on the edge of the through hole, and a second positioning groove communicated with the through hole is arranged on the connecting cylinder part. A first positioning protruding block is arranged on the circumferential outer wall of the connecting cylinder part, when the first positioning protruding block is aligned with the first positioning groove, the connecting cylinder part can penetrate through the through hole, and when the first positioning protruding block and the first positioning groove are staggered, the connecting cylinder part cannot penetrate through the through hole, a sealing groove is formed in the valve cover, and a sealing ring is arranged in the sealing groove. A positioning disc part is arranged on the driving shell; the sealing ring is pressed between the sealing groove and the positioning disc part; the valve cover and the driving shell are convenient to disassemble and assemble, a large number of fasteners are omitted, meanwhile, the number of holes in the valve cover and the number of holes in the driving shell are reduced, the overall strength of parts is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an ejection-type quick-closing built-in valve for a gas meter. Background Art

[0002] The built-in valve of the gas meter is used on the gas meter to control the opening and closing of the gas meter. It controls the opening and closing of the gas port through the valve seal to realize the opening and closing of the gas motor valve. The built-in valve of the gas meter is widely used in household, commercial and industrial gas metering systems, especially in occasions that require remote control or automated management.

[0003] In the prior art, a patent with publication number CN218761745U discloses a gas motor valve, which realizes the reciprocating motion of the rack through a ratchet and pawl structure and transmission, thereby realizing the opening and closing of the gas port by the valve seal. The structure is simple, but in traditional valves of this type, the outer shell (drive shell) and the shell (valve body) are usually connected by a large number of fasteners, which makes disassembly and assembly inconvenient, thereby low assembly efficiency. Utility Model Content

[0004] The utility model aims to overcome the shortcomings and deficiencies of the prior art and to provide a ejection-type quick-closing built-in valve for a gas meter.

[0005] The technical solution adopted by the utility model is as follows: a ejection-type quick-closing built-in valve of a gas meter, comprising a valve body, a valve cover, a valve core, a valve stem, a drive assembly and a drive housing, the valve body is provided with a valve seat that seals with the valve core, the valve cover is connected to the valve body, the drive assembly is arranged in the drive housing, the valve cover is provided with a through hole, the drive housing comprises a connecting cylinder, the edge of the through hole is provided with a first positioning groove that communicates with the through hole, the circumferential outer wall of the connecting cylinder is provided with a first positioning protrusion, when the first positioning protrusion is aligned with the first positioning groove, the connecting cylinder can pass through the through hole, when the first positioning protrusion is misaligned with the first positioning groove, the connecting cylinder cannot pass through the through hole, a sealing groove is provided on the valve cover on the outside of the through hole, a sealing ring is provided in the sealing groove, a positioning disk portion is provided on the drive housing near the connecting cylinder, the edge of the through hole is located between the positioning disk portion and the first positioning protrusion, and the sealing ring is pressed between the sealing groove and the positioning disk portion.

[0006] In some embodiments, a second positioning groove is provided on the valve cover on the outer side of the through hole, the sealing groove is provided in the second positioning groove, and the positioning plate portion is at least partially embedded in the second positioning groove.

[0007] In some embodiments, a second positioning protrusion extends from the positioning disk portion along the radial direction of the valve cover, and a third positioning groove is provided on the valve cover corresponding to the second positioning protrusion. The third positioning groove is located on the rotation path of the second positioning protrusion. When the second positioning protrusion is screwed into the third positioning groove, the drive housing cannot rotate.

[0008] In some embodiments, the third positioning groove includes two third positioning protrusions arranged at an interval, the third positioning groove is formed between the two third positioning protrusions, and a first guide surface is provided on a side of the third positioning protrusion away from the third positioning groove.

[0009] In some embodiments, the second positioning protrusion is provided with second guide surfaces on both sides of its rotation path.

[0010] In some embodiments, the number of the first positioning grooves is not less than the number of the first positioning protrusions.

[0011] In some embodiments, there are four first positioning grooves which are arranged in a cross shape at the edge of the through hole, and the first positioning protrusions are arranged opposite to the first positioning grooves.

[0012] In some embodiments, the number of the third positioning grooves is not less than the number of the second positioning protrusions.

[0013] In some embodiments, the number of the third positioning grooves is four and they are arranged in a cross shape, and the number of the second positioning protrusions is two and they are arranged in a straight line shape.

[0014] In some embodiments, a travel switch is included, the travel switch includes a trigger end, a return spring is provided between the valve stem and the valve cover, and the drive assembly includes:

[0015] A driver, wherein the driver adopts a motor;

[0016] a first gear connected to a driver;

[0017] A reduction gear set, the reduction gear set comprising a plurality of reduction gears;

[0018] A second gear, the second gear comprising a large gear portion, a small gear portion and a connecting portion, the large gear portion being meshed with the reduction gear set;

[0019] A ratchet wheel, the ratchet wheel and the second gear wheel are located on the same axis, the ratchet wheel is provided with an opening through which the connecting portion can pass, and a linkage column is provided near the edge thereof;

[0020] A pawl, the pawl cooperates with the ratchet wheel, the pawl is connected to the connecting part and rotates synchronously;

[0021] A third gear, the third gear being disposed on the linkage column and meshing with the pinion portion;

[0022] and a fourth gear meshing with the third gear;

[0023] Wherein, the valve stem is provided with a rack portion meshing with the fourth gear and a touch portion, and the trigger end is located on the moving path of the touch portion.

[0024] The beneficial effects of the utility model are as follows: in the utility model, in the assembly type, it is only necessary to align the first positioning protrusion with the first positioning groove to insert the connecting cylinder into the through hole, and then rotate the connecting cylinder to make the first positioning protrusion and the first positioning groove misaligned, and at the same time cooperate with the sealing ring to quickly form a connection between the valve cover and the drive housing, and it is also very convenient to disassemble. Compared with the traditional connection structure, a large number of fasteners are saved, and the number of openings on the valve cover and the drive housing is reduced, thereby improving the overall strength of the parts and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0026] Figure 1 An exploded view of a ejection-type quick-closing built-in valve of a gas meter in the utility model;

[0027] Figure 2 It is an exploded view of the drive housing, the sealing ring and the valve cover in the utility model;

[0028] Figure 3 It is a cross-sectional view of the drive housing, the sealing ring and the valve cover in the utility model;

[0029] Figure 4 It is a schematic diagram of the drive housing in the utility model;

[0030] Figure 5 It is a schematic diagram of the valve cover in the utility model;

[0031] Figure 6 The schematic diagram of the partial structure of the driving mechanism in the utility model is as follows Figure 1 ;

[0032] Figure 7 It is a partial schematic diagram of a ejection-type quick-closing built-in valve of a gas meter in the utility model;

[0033] Figure 8 The schematic diagram of the partial structure of the driving mechanism in the utility model is as follows Figure 2 ;

[0034] Fig. 9 It is a partial schematic diagram of the driving mechanism in the utility model;

[0035] Fig.10 The utility model is a cross-sectional view of a ejection-type quick-closing built-in valve of a gas meter. DETAILED DESCRIPTION

[0036] The following description provides specific application scenarios and requirements of this specification, with the purpose of enabling those skilled in the art to make and use the contents of this specification. Various local modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but to the widest scope consistent with the claims.

[0037] In the description of the present application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0038] Secondly, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components and should not be understood as limitations on the embodiments of the present application.

[0039] In addition, the terms "installed", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements or components.

[0040] For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] Regarding the drawings of the present application, it should be clearly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of the present specification. It should also be understood that the drawings are not drawn to scale.

[0042] Embodiment 1:

[0043] like Figures 1 to 10 As shown, this embodiment provides a ejection-type quick-closing built-in valve for a gas meter, which is commonly used in a gas pipeline, and includes a valve body 1, a valve cover 2, a valve core 3, a valve stem 4, a drive assembly 5 and a drive housing 6. The valve body 1 is provided with a valve seat 7 that seals with the valve core 3, the valve cover 2 is connected to the valve body 1, the drive assembly 5 is arranged in the drive housing 6, the valve cover 2 is provided with a through hole 21, the drive housing 6 includes a connecting cylinder 61, the edge of the through hole 21 is provided with a first positioning groove 22 that communicates with the through hole 21, and the connecting cylinder 6 1 is provided with a first positioning protrusion 62 on the circumferential outer wall. When the first positioning protrusion 62 is aligned with the first positioning groove 22, the connecting cylinder portion 61 can pass through the through hole 21. When the first positioning protrusion 62 is misaligned with the first positioning groove 22, the connecting cylinder portion 61 cannot pass through the through hole 21. The number of the first positioning grooves 22 is not less than the number of the first positioning protrusions 62. Preferably, the number of the first positioning grooves 22 is four and they are cross-shaped and arranged on the edge of the through hole 21. The first positioning protrusions 62 are arranged opposite to the first positioning grooves 22.

[0044] A sealing groove 23 is provided on the valve cover 2 on the outer side of the through hole 21, and a sealing ring 24 is provided in the sealing groove 23. The sealing ring 24 can be an O-ring. A positioning plate portion 63 is provided on the drive housing 6 near the connecting cylinder portion 61. The edge of the through hole 21 is located between the positioning plate portion 63 and the first positioning protrusion 62, and the sealing ring 24 is pressed between the sealing groove 23 and the positioning plate portion 63.

[0045] Through the above arrangement, in the assembly type, it is only necessary to align the first positioning protrusion 62 with the first positioning groove 22 to insert the connecting cylinder 61 into the through hole 21, and then rotate the connecting cylinder 61 to make the first positioning protrusion 62 and the first positioning groove 22 misaligned, and at the same time cooperate with the sealing ring 24 to quickly form a connection between the valve cover 2 and the drive housing 6, and it is also very convenient to disassemble. Compared with the traditional connection structure, a large number of fasteners are saved, and the number of openings on the valve cover 2 and the drive housing 6 is reduced, thereby improving the overall strength of the parts and reducing the production cost.

[0046] Furthermore, the valve cover 2 is provided with a second positioning groove 25 on the outer side of the through hole 21, the sealing groove 23 is provided in the second positioning groove 25, and the positioning disc portion 63 is at least partially embedded in the second positioning groove 25 to form a positioning, thereby reducing the movement of the drive housing 6 in the radial direction of the valve cover 2. In this embodiment, the positioning disc portion 63 is a disc.

[0047] Secondly, a second positioning protrusion 631 extends from the positioning disk portion 63 in the radial direction of the valve cover 2, and a third positioning groove 26 is provided on the valve cover 2 corresponding to the second positioning protrusion 631. The third positioning groove 26 is located on the rotation path of the second positioning protrusion 631. When the second positioning protrusion 631 is screwed into the third positioning groove 26, the drive housing 6 cannot rotate. After the connection is formed in this way, the drive housing 6 can be prevented from rotating relative to the valve cover 2.

[0048] Among them, the number of the third positioning grooves 26 is not less than the number of the second positioning protrusions 631. Preferably, the third positioning grooves 26 are four and arranged in a cross shape, and the second positioning protrusions 631 are two and arranged in a straight line shape. In this way, the orientation of the drive housing 6 can be adjusted according to the installation space, thereby improving the use range of the product.

[0049] Specifically, the third positioning groove 26 includes two third positioning protrusions 261 arranged at intervals, and the third positioning groove 26 is formed between the two third positioning protrusions 261. A first guide surface 262 is provided on the side of the third positioning protrusion 261 away from the third positioning groove 26. The first guide surface 262 is an inclined surface or an arc surface. When the connecting cylinder 61 is inserted into the through hole 21, the driving shell 6 can be rotated so that the third positioning protrusion 261 is embedded in the third positioning groove 26 to form a circumferentially rotating positioning.

[0050] Secondly, the second positioning protrusion 631 is provided with second guide surfaces 632 on both sides of its rotation path. The second guide surfaces 632 are inclined surfaces or arc-shaped surfaces. The two guide surfaces cooperate with each other, so that the third positioning protrusion 261 and the third positioning groove 26 are easier to cooperate and release.

[0051] Furthermore, it includes a travel switch 8, which adopts a traditional limit switch. The travel switch 8 includes a trigger end 81. A reset spring 9 is arranged between the valve stem 4 and the valve cover 2. The reset spring 9 adopts a conical compression spring, which is used to reset the valve stem 4. The drive assembly 5 includes: a driver 51, and the driver 51 adopts a motor; a first gear 52, and the first gear 52 is connected to the driver 51; a reduction gear set 53, and the reduction gear set 53 includes a plurality of reduction gears, and adopts a multi-stage reduction transmission to increase the output torque and reduce the load on the motor; a second gear 54, and the second gear 54 includes a large gear part 541, a small gear part 542 and a connecting part 543, and the large gear part 541 is meshed with the reduction gear set 53; a ratchet 55, and the ratchet 55 and the second gear 54 are located on the same axis, that is, they are rotatably arranged on the same shaft, and the ratchet 55 is provided with a The connecting portion 543 is provided with an opening through which the connecting portion 543 passes, and a linkage column 551 is provided near the edge thereof; a pawl 56, the pawl 56 cooperates with the ratchet 55, the pawl 56 is connected to the connecting portion 543 and rotates synchronously; a third gear 57, the third gear 57 is provided on the linkage column 551, and meshes with the pinion portion 542; and a fourth gear 58, the fourth gear 58 meshes with the third gear 57; wherein, the valve stem 4 is provided with a rack portion 41 meshing with the fourth gear 58, and a touch portion 42 is provided, and the trigger end 81 is located on the moving path of the touch portion 42. Regarding the structure and principle of the driving component 5, reference can be made to the corresponding structure and principle of a gas motor valve disclosed in the patent with publication number CN218761745U, or the corresponding structure and principle of a motor valve for a gas meter disclosed in the patent with publication number CN216200995U.

[0052] In summary, after reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented only by way of example and may not be restrictive. Although not explicitly stated herein, those skilled in the art will appreciate that the requirements of this application encompass various reasonable changes, improvements and modifications to the embodiments. These changes, improvements and modifications are intended to be proposed by the present application and are within the spirit and scope of the exemplary embodiments of the present application.

[0053] In addition, it should be understood that in the foregoing description of the embodiments of the present application, in order to help understand a feature and for the purpose of simplifying the present application, the present application combines various features in a single embodiment, drawing or its description. However, this does not mean that the combination of these features is necessary. When reading the present application, it is entirely possible for a person skilled in the art to mark out a part of the devices as a separate embodiment. In other words, the embodiments in the present application can also be understood as the integration of multiple secondary embodiments. This is also true when the content of each secondary embodiment is less than all the features of a single aforementioned disclosed embodiment.

[0054] Finally, it should be understood that the embodiments of the application disclosed herein are explanations of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations according to the embodiments in the present application to implement the application in the present application. Therefore, the embodiments of the present application are not limited to the embodiments accurately described in the application.

Claims

1. A ejection-type quick-closing built-in valve for a gas meter, comprising a valve body (1), a valve cover (2), a valve core (3), a valve stem (4), a drive assembly (5) and a drive housing (6), wherein the valve body (1) is provided with a valve seat (7) which is sealed with the valve core (3), the valve cover (2) is connected to the valve body (1), and the drive assembly (5) is arranged in the drive housing (6), characterized in that: The valve cover (2) is provided with a through hole (21), the drive housing (6) comprises a connecting cylinder (61), the edge of the through hole (21) is provided with a first positioning groove (22) communicating with the through hole (21), the circumferential outer wall of the connecting cylinder (61) is provided with a first positioning protrusion (62), when the first positioning protrusion (62) is aligned with the first positioning groove (22), the connecting cylinder (61) can pass through the through hole (21), when the first positioning protrusion (62) is misaligned with the first positioning groove (22), the connecting cylinder (61) can pass through the through hole (21), When the connecting cylinder (61) is in the position, the connecting cylinder (61) cannot pass through the through hole (21); a sealing groove (23) is provided on the valve cover (2) on the outer side of the through hole (21); a sealing ring (24) is provided in the sealing groove (23); a positioning plate (63) is provided on the drive housing (6) near the connecting cylinder (61); the edge of the through hole (21) is located between the positioning plate (63) and the first positioning protrusion (62); and the sealing ring (24) is pressed between the sealing groove (23) and the positioning plate (63).

2. The ejection-type quick-closing built-in valve for a gas meter according to claim 1, characterized in that: The valve cover (2) is provided with a second positioning groove (25) on the outer side of the through hole (21), the sealing groove (23) is arranged in the second positioning groove (25), and the positioning plate portion (63) is at least partially embedded in the second positioning groove (25).

3. The ejection-type quick-closing built-in valve for a gas meter according to claim 1, characterized in that: A second positioning protrusion (631) extends from the positioning disk portion (63) in the radial direction of the valve cover (2), and a third positioning groove (26) is provided on the valve cover (2) corresponding to the second positioning protrusion (631). The third positioning groove (26) is located on the rotation path of the second positioning protrusion (631). When the second positioning protrusion (631) is screwed into the third positioning groove (26), the drive housing (6) cannot rotate.

4. The ejection-type quick-closing built-in valve for a gas meter according to claim 3, characterized in that: The third positioning groove (26) comprises two third positioning protrusions (261) arranged at an interval, the third positioning groove (26) is formed between the two third positioning protrusions (261), and a first guide surface (262) is provided on a side of the third positioning protrusion (261) away from the third positioning groove (26).

5. The ejection-type quick-closing built-in valve for a gas meter according to claim 3, characterized in that: The second positioning protrusion (631) is provided with second guide surfaces (632) on both sides of its rotation path.

6. The ejection-type quick-closing built-in valve for a gas meter according to claim 1, characterized in that: The number of the first positioning grooves (22) is not less than the number of the first positioning protrusions (62).

7. The ejection-type quick-closing built-in valve for a gas meter according to claim 6, characterized in that: There are four first positioning grooves (22) arranged in a cross shape on the edge of the through hole (21), and the first positioning protrusion (62) is arranged opposite to the first positioning groove (22).

8. The ejection-type quick-closing built-in valve for a gas meter according to claim 3, characterized in that: The number of the third positioning grooves (26) is not less than the number of the second positioning protrusions (631).

9. The ejection-type quick-closing built-in valve for a gas meter according to claim 3, characterized in that: There are four third positioning grooves (26) arranged in a cross shape, and there are two second positioning protrusions (631) arranged in a straight line shape.

10. The ejection-type quick-closing built-in valve for a gas meter according to claim 1, characterized in that: The valve stem (4) and the valve cover (2) are provided with a return spring (9); the drive assembly (5) comprises: A driver (51), wherein the driver (51) is a motor; A first gear (52), the first gear (52) being connected to the driver (51); A reduction gear set (53), wherein the reduction gear set (53) comprises a plurality of reduction gears; A second gear (54), the second gear (54) comprising a large gear portion (541), a small gear portion (542) and a connecting portion (543), the large gear portion (541) being meshed with the reduction gear set (53); A ratchet wheel (55), the ratchet wheel (55) and the second gear wheel (54) are located on the same axis, the ratchet wheel (55) is provided with an opening through which the connecting portion (543) can pass, and a linkage column (551) is provided near the edge thereof; A pawl (56), wherein the pawl (56) cooperates with the ratchet wheel (55), and the pawl (56) is connected to the connecting portion (543) and rotates synchronously; A third gear (57), the third gear (57) being disposed on the linkage column (551) and meshing with the pinion portion (542); and a fourth gear (58), wherein the fourth gear (58) is meshed with the third gear (57); The valve stem (4) is provided with a rack portion (41) meshing with the fourth gear (58) and a contact portion (42), and the trigger end (81) is located on the moving path of the contact portion (42).

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