CN213808955U - Electric ball valve - Google Patents

Abstract

The utility model relates to an electric ball valve, include: the valve body assembly is provided with a valve cavity; the valve core assembly comprises a valve core which is movably arranged in the valve cavity; the driving mechanism comprises a driving piece and a transmission assembly, the driving piece is connected with the valve core through the transmission assembly, the driving piece is used for driving the transmission assembly to move so as to drive the valve core to switch between a valve opening position and a valve closing position, and the transmission assembly is provided with a trigger piece; the electric control board is electrically connected with the driving mechanism and is provided with a resistance circuit matched with the trigger piece; when the valve core rotates to the valve opening position or the valve closing position, the electric control board controls the driving piece to stop driving according to the received resistance value signal. The electric ball valve has the advantages of simple overall structure, convenience in assembly, low cost, sensitive reaction, difficulty in failure and high product stability.

Description

Electric ball valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to an electric ball valve.

Background

The electric ball valve is an important actuating mechanism in an industrial automation control system. At present, the electric ball valves on the market mostly adopt micro switches to control the opening and closing of the valves, so that the cost is high, the assembly efficiency is low, the valves are easy to lose efficacy, and the product stability is poor.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to adopt micro-gap switch to control opening and closing of valve to the electronic ball valve of tradition, and not only with high costs, the assembly efficiency is low to easy inefficacy, the relatively poor problem of product stability provides an electronic ball valve.

An electrically operated ball valve, comprising:

the valve body assembly is provided with a valve cavity;

the valve core assembly comprises a valve core which is movably arranged in the valve cavity;

the driving mechanism comprises a driving piece and a transmission assembly, the driving piece is connected with the valve core through the transmission assembly, the driving piece is used for driving the transmission assembly to move so as to drive the valve core to switch between a valve opening position and a valve closing position, and the transmission assembly is provided with a trigger piece; and

the electric control board is electrically connected with the driving mechanism and is provided with a resistance circuit matched with the trigger piece; when the valve core rotates to the valve opening position or the valve closing position, the electric control board controls the driving piece to stop driving according to the received resistance value signal.

The electric ball valve drives the transmission assembly to move through the driving part, so that the valve core can be driven to switch between the valve opening position and the valve closing position, and the trigger part can be driven to move along the resistance line while the transmission assembly moves. When the valve core moves to the valve opening position, the trigger piece is located at a first preset position of the resistance value circuit, the electric control board receives a first resistance value signal, and the electric control board controls the driving piece to stop driving, so that the valve core can be kept at the valve opening position, and the valve opening action is realized; when the valve core moves to the valve closing position, the trigger piece is located at the second preset position of the resistance value circuit, at the moment, the electric control board receives the second resistance value signal, and the electric control board controls the driving piece to stop driving, so that the valve core can be kept at the valve closing position, and the valve closing action is realized. Compare in traditional electric ball valve adopt micro-gap switch to control opening and closing of valve, the electric ball valve of this scheme adopts trigger piece and resistance circuit phase to cooperate and change circuit resistance signal, and automatically controlled board controls driving piece stop driving according to received resistance signal simultaneously, and overall structure is simple, and the assembly of being convenient for, the cost is lower, and the reaction is sensitive, is difficult for becoming invalid, and product stability is higher.

In one embodiment, the trigger element includes a first conductive elastic sheet and a second conductive elastic sheet, the resistance line includes a first resistance line and a second resistance line, the first conductive elastic sheet is in contact fit with the first resistance line, and the second conductive elastic sheet is in contact fit with the second resistance line.

In one embodiment, the first conductive elastic sheet is provided with a first convex part in triggering fit with the first resistance line, and the second conductive elastic sheet is provided with a second convex part in triggering fit with the second resistance line.

In one embodiment, the trigger is made of beryllium copper.

In one embodiment, the valve body assembly comprises a valve seat and a valve body, the valve body is connected with the valve seat, the valve cavity is arranged in the valve body, the valve seat is provided with an accommodating cavity, the valve seat is provided with a mounting plate corresponding to the same side of the valve cavity and the accommodating cavity, the driving part is accommodated in the accommodating cavity, the driving end of the driving part penetrates out of the mounting plate, the valve core assembly further comprises a valve rod, one end of the valve rod is connected with the valve core, and the other end of the valve rod penetrates out of the mounting plate; the transmission assembly is arranged on the mounting plate, and the driving end of the driving piece is connected with the valve rod through the transmission assembly.

In one embodiment, the transmission assembly includes a first transmission member, a second transmission member and a third transmission member, the first transmission member is connected to the driving end of the driving member, the third transmission member is connected to the valve rod, the second transmission member is used for driving and connecting the first transmission member and the third transmission member, and the trigger member is connected to the third transmission member.

In one embodiment, the first transmission member, the second transmission member and the third transmission member are sequentially engaged gear structures.

In one embodiment, the mounting plate is provided with a first limiting member and a second limiting member which are arranged at intervals, and the first limiting member and the second limiting member are used for limiting the movement stroke of the third transmission member.

In one embodiment, the valve body assembly further comprises a valve cover connected with the valve seat, the valve cover covers one side of the mounting plate, where the transmission assembly is arranged, and the electric control plate is mounted in the valve cover.

The application also provides an electric ball valve, include:

the valve body assembly is provided with a valve cavity;

the valve core assembly comprises a valve core which is movably arranged in the valve cavity;

the driving part is connected with the valve core through the transmission assembly, the driving part is used for driving the transmission assembly to move so as to drive the valve core to switch between a valve opening position and a valve closing position, and the first limiting part and the second limiting part are used for limiting the movement stroke of the transmission assembly; and

and the electric control plate is electrically connected with the driving mechanism, and when the valve core rotates to the valve opening position or the valve closing position, the electric control plate controls the driving piece to stop driving according to the induced current change.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of an electric ball valve according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the motorized ball valve of FIG. 1;

FIG. 3 is an exploded view of the motorized ball valve of FIG. 1;

FIG. 4 is a schematic structural view of the motorized ball valve of FIG. 3 with the valve body assembly omitted;

FIG. 5 is a schematic view of the motorized ball valve of FIG. 4 from another perspective;

fig. 6 is a schematic structural diagram of a trigger according to an embodiment.

11. A valve seat; 12. a valve body; 121. a water inlet; 122. a water outlet; 13. a valve cover; 21. a valve core; 22. a valve stem; 31. a drive member; 32. a transmission assembly; 321. a first transmission member; 322. a second transmission member; 323. a third transmission member; 40. a trigger; 41. a first conductive elastic sheet; 411. a first convex portion; 42. a second conductive elastic sheet; 421. a second convex portion; 50. an electric control board; 51. a resistance line; 60. mounting a plate; 61. a first limit piece; 62. a second limiting member.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 to 3, an electric ball valve according to an embodiment of the present invention includes a valve body assembly, a valve core assembly, a driving mechanism, and an electric control plate 50. The valve body assembly is provided with a valve cavity; the valve core assembly comprises a valve core 21 movably arranged in the valve cavity; the driving mechanism comprises a driving part 31 and a transmission assembly 32, the driving part 31 is connected with the valve core 21 through the transmission assembly 32, the driving part 31 is used for driving the transmission assembly 32 to move so as to drive the valve core 21 to switch between a valve opening position and a valve closing position, and the transmission assembly 32 is provided with a trigger 40; the electric control board 50 is electrically connected with the driving mechanism, and the electric control board 50 is provided with a resistance circuit 51 matched with the trigger 40; when the valve core 21 rotates to the valve opening position or the valve closing position, the electronic control board 50 controls the driving member 31 to stop driving according to the received resistance value signal.

The electric ball valve drives the transmission assembly 32 to move through the driving member 31, and further drives the valve core 21 to switch between the open valve position and the closed valve position, and the trigger 40 is driven to move along the resistance line 51 while the transmission assembly 32 moves. When the valve core 21 moves to the valve opening position, the trigger 40 is located at a first preset position of the resistance line 51, and at this time, the electronic control board 50 receives a first resistance signal, and the electronic control board 50 controls the driving part 31 to stop driving, so that the valve core 21 can be kept at the valve opening position, and the valve opening action is realized; when the valve core 21 moves to the valve closing position, the trigger 40 is located at the second preset position of the resistance line 51, and at this time, the electronic control board 50 receives the second resistance signal, and the electronic control board 50 controls the driving part 31 to stop driving, so that the valve core 21 can be kept at the valve closing position, and the valve closing action is realized. Compare in traditional electric ball valve adopt micro-gap switch to control opening and closing of valve, the electric ball valve of this scheme adopts trigger 40 and resistance circuit 51 to cooperate and change circuit resistance signal, and automatically controlled board 50 controls driving piece 31 according to received resistance signal and stops the drive simultaneously, and overall structure is simple, the assembly of being convenient for, and the cost is lower, and the reaction is sensitive, is difficult for becoming invalid, and product stability is higher.

Further, referring to fig. 5 and 6, in the present embodiment, the triggering element 40 includes a first conductive elastic sheet 41 and a second conductive elastic sheet 42, the resistance line 51 includes a first resistance line and a second resistance line, the first conductive elastic sheet 41 is in contact fit with the first resistance line, and the second conductive elastic sheet 42 is in contact fit with the second resistance line. Specifically, as shown in fig. 6, the triggering member 40 includes a connecting plate for connecting and fixing with the transmission assembly 32, and the first conductive elastic piece 41 and the second conductive elastic piece 42 are respectively connected and fixed with the connecting plate. The first conductive elastic sheet 41 and the second conductive elastic sheet 42 can conduct electricity, and have certain elasticity, so that good contact with the first resistance line and the second resistance line can be ensured, and the sensitivity can be further improved.

In order to further improve the contact reliability, optionally, in this embodiment, the first conductive elastic sheet 41 is provided with a first convex portion 411 in trigger fit with the first resistance line, and the second conductive elastic sheet 42 is provided with a second convex portion 421 in trigger fit with the second resistance line.

Optionally, in this embodiment, the triggering member 40 is made of beryllium bronze, and has good ductility and electrical conductivity. Of course, in other embodiments, the trigger 40 may be made of other conductive materials.

Further, please refer to fig. 1 and fig. 2, in this embodiment, the valve body assembly includes a valve seat 11 and a valve body 12, the valve body 12 is connected to the valve seat 11, the valve cavity is disposed in the valve body 12, the valve seat 11 is provided with an accommodating cavity, the valve seat 11 is provided with a mounting plate 60 corresponding to the same side of the valve cavity and the accommodating cavity, the driving member 31 is accommodated in the accommodating cavity, a driving end of the driving member 31 penetrates through the mounting plate 60, the valve core assembly further includes a valve rod 22, one end of the valve rod 22 is connected to the valve core 21, and the other end penetrates through the mounting plate 60; the transmission assembly 32 is disposed on the mounting plate 60, and the driving end of the driving member 31 is connected to the valve stem 22 through the transmission assembly 32.

Specifically, the valve body 12 is provided with a valve cavity, and a water inlet 121 and a water outlet 122 which are communicated with the valve cavity, and the valve core 21 is arranged in the valve cavity. The driving member 31 drives the transmission assembly 32 to move and drive the valve rod 22 to rotate, and further the valve core 21 can be driven to rotate by the valve rod 22. The valve core 21 is provided with a water through hole, when the valve core 21 is in the valve opening position, the water inlet 121 is communicated with the water outlet 122 through the water through hole, and water can pass through the water through hole; when the valve core 21 is in the closed valve position, the valve core 21 blocks the water inlet 121 from the water outlet 122, and water flow is prevented. Set up driving piece 31 in the holding intracavity of disk seat 11, can play fine guard action to driving piece 31, avoid outside rivers to get into and lead to driving piece 31 to intake inefficacy to ensure driving piece 31's life. The driving member 31 may be driven by a motor, for example, a stepping motor may be selected.

Further, referring to fig. 4, in the present embodiment, the transmission assembly 32 includes a first transmission member 321, a second transmission member 322 and a third transmission member 323, the first transmission member 321 is connected to the driving end of the driving member 31, the third transmission member 323 is connected to the valve rod 22, the second transmission member 322 connects the first transmission member 321 to the third transmission member 323 in a transmission manner, and the triggering member 40 is connected to the third transmission member 323. Specifically, the driving member 31 drives the first transmission member 321 to move, the first transmission member 321 drives the second transmission member 322 to move, the second transmission member 322 drives the third transmission member 323 to move, the third transmission member 323 drives the valve rod 22 to rotate, and the third transmission member 323 drives the triggering member 40 to move along the resistance line 51 while moving. The first transmission member 321, the second transmission member 322 and the third transmission member 323 can all adopt a gear structure; alternatively, the first transmission member 321 and the third transmission member 323 employ synchronous wheels, and the second transmission member 322 employs synchronous belts; alternatively, the first transmission member 321 and the third transmission member 323 employ sprockets, and the second transmission member 322 employs a chain; as long as it is ensured that the torque output by the driver 31 can be transmitted to the valve stem 22.

Alternatively, in this embodiment, the first transmission member 321, the second transmission member 322 and the third transmission member 323 are gear structures engaged in sequence. Specifically, the first transmission member 321 and the second transmission member 322 both adopt circular gears, the third transmission member 323 adopts a sector gear, and a gear structure is adopted for transmission, so that the overall structure is compact, and the transmission is reliable.

Further, in the present embodiment, the mounting plate 60 is provided with a first limiting member 61 and a second limiting member 62 which are arranged at intervals, and the first limiting member 61 and the second limiting member 62 are used for limiting the movement stroke of the third transmission member 323. Specifically, when the valve core 21 rotates to the valve opening position, the third transmission member 323 abuts against the first limiting member 61; when the valve core 21 rotates to the closed valve position, the third transmission member 323 abuts against the second limiting member 62. Thus, even when the engagement between the trigger 40 and the resistance circuit fails, the driving of the driver 31 can be stopped by the mechanical stopper, and the reliability of opening and closing the valve can be further improved.

Further, in this embodiment, the valve body assembly further includes a valve cover 13 connected to the valve seat 11, the valve cover 13 covers the side of the mounting plate 60 where the transmission assembly 32 is disposed, and the electronic control board 50 is mounted in the valve cover 13. By installing the electric control board 50 in the valve cover 13, the electric control board 50 can be well protected. Optionally, a sealing member is arranged between the valve cover 13 and the valve seat 11, so that the sealing and waterproof performance of the whole valve body assembly can be improved.

In the second embodiment of the present application, a motorized ball valve is also provided, which includes a valve body assembly, a valve core assembly, a drive mechanism, and an electronic control plate 50. The valve body assembly is provided with a valve cavity; the valve core assembly comprises a valve core 21 movably arranged in the valve cavity; the driving mechanism comprises a driving member 31, a transmission assembly 32, a first limiting member 61 and a second limiting member 62, the driving member 31 is connected with the valve core 21 through the transmission assembly 32, the driving member 31 is used for driving the transmission assembly 32 to move so as to drive the valve core 21 to switch between a valve opening position and a valve closing position, and the first limiting member 61 and the second limiting member 62 are used for limiting the movement stroke of the transmission assembly 32; the electronic control board 50 is electrically connected to the driving mechanism, and when the valve core 21 rotates to the valve opening position or the valve closing position, the electronic control board 50 controls the driving member 31 to stop driving according to the sensed current change.

The electric ball valve in this embodiment is different from the electric ball valve in the first embodiment in that the electric ball valve in this embodiment omits the trigger 40 and the resistance line 51, performs mechanical limiting directly through the first limiting member 61 and the second limiting member 62, and performs corresponding adjustment on the control program of the electronic control board 50. Thus, when the valve core 21 rotates to the valve opening position, the transmission assembly 32 is in limit abutment with the first limiting member 61, at this time, the driving member 31 is locked, so that the current signal of the electronic control plate 50 changes suddenly, and the electronic control plate 50 controls the driving member 31 to stop driving according to the current change, so that the valve core assembly is kept at the valve opening position, and the valve opening action is realized; when the valve core 21 rotates to the valve closing position, the transmission assembly 32 is in limit abutment with the second limiting member 62, at this time, the driving member 31 is locked, so that the current signal of the electric control plate 50 is suddenly changed, and the electric control plate 50 controls the driving member 31 to stop driving according to the current change, so that the valve core assembly is kept at the valve closing position, and the valve closing action is realized. Compare in traditional electric ball valve adopt micro-gap switch to come opening and closing of control flap, the electric ball valve overall structure of this scheme is simple, the assembly of being convenient for, and the cost is lower, and the reaction is sensitive, is difficult for becoming invalid, and product stability is higher.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. An electrically operated ball valve, comprising:

the valve body assembly is provided with a valve cavity;

the valve core assembly comprises a valve core which is movably arranged in the valve cavity;

the driving mechanism comprises a driving piece and a transmission assembly, the driving piece is connected with the valve core through the transmission assembly, the driving piece is used for driving the transmission assembly to move so as to drive the valve core to switch between a valve opening position and a valve closing position, and the transmission assembly is provided with a trigger piece; and

the electric control board is electrically connected with the driving mechanism and is provided with a resistance circuit matched with the trigger piece; when the valve core rotates to the valve opening position or the valve closing position, the electric control board controls the driving piece to stop driving according to the received resistance value signal.

2. The motorized ball valve of claim 1, wherein the trigger comprises a first conductive spring and a second conductive spring, the resistance line comprises a first resistance line and a second resistance line, the first conductive spring is in contact with the first resistance line, and the second conductive spring is in contact with the second resistance line.

3. The motorized ball valve of claim 2, wherein the first conductive clip has a first protrusion that is in triggering engagement with the first resistance line, and the second conductive clip has a second protrusion that is in triggering engagement with the second resistance line.

4. The motorized ball valve of claim 1, wherein the trigger member is formed of beryllium copper.

5. The electric ball valve according to any one of claims 1 to 4, wherein the valve body assembly comprises a valve seat and a valve body, the valve body is connected with the valve seat, the valve cavity is arranged on the valve body, the valve seat is provided with an accommodating cavity, the valve seat is provided with a mounting plate corresponding to the same side of the valve cavity and the accommodating cavity, the driving member is accommodated in the accommodating cavity, the driving end of the driving member penetrates through the mounting plate, the valve core assembly further comprises a valve rod, one end of the valve rod is connected with the valve core, and the other end of the valve rod penetrates through the mounting plate; the transmission assembly is arranged on the mounting plate, and the driving end of the driving piece is connected with the valve rod through the transmission assembly.

6. The motorized ball valve of claim 5, wherein the transmission assembly includes a first transmission member coupled to the drive end of the driving member, a second transmission member coupled to the valve stem, and a third transmission member drivingly coupling the first transmission member to the third transmission member, and the trigger member coupled to the third transmission member.

7. The motorized ball valve of claim 6, wherein the first transmission member, the second transmission member, and the third transmission member are sequentially engaged gear structures.

8. The electric ball valve according to claim 6, wherein the mounting plate is provided with a first limiting member and a second limiting member which are arranged at intervals and used for limiting the movement stroke of the third transmission member.

9. The motorized ball valve of claim 5, wherein the valve body assembly further comprises a valve cover coupled to the valve seat, the valve cover covering a side of the mounting plate on which the transmission assembly is disposed, the electrical control plate being mounted within the valve cover.

10. An electrically operated ball valve, comprising:

the valve body assembly is provided with a valve cavity;

the valve core assembly comprises a valve core which is movably arranged in the valve cavity;

the driving part is connected with the valve core through the transmission assembly, the driving part is used for driving the transmission assembly to move so as to drive the valve core to switch between a valve opening position and a valve closing position, and the first limiting part and the second limiting part are used for limiting the movement stroke of the transmission assembly; and

and the electric control plate is electrically connected with the driving mechanism, and when the valve core rotates to the valve opening position or the valve closing position, the electric control plate controls the driving piece to stop driving according to the induced current change.

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