CN107504247B

CN107504247B - Stop valve

Info

Publication number: CN107504247B
Application number: CN201710984342.5A
Authority: CN
Inventors: 樊钊
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2017-10-20
Filing date: 2017-10-20
Publication date: 2023-11-07
Anticipated expiration: 2037-10-20
Also published as: CN107504247A

Abstract

The application discloses a stop valve, which comprises a valve body, a stop valve core and an operating mechanism, wherein the stop valve core is arranged in the valve body, the operating mechanism is used for controlling the stop valve core to act, the valve body is provided with a valve hole, the stop valve core is provided with an opening position for opening the valve hole and a closing position for closing the valve hole, the operating mechanism comprises a transmission part, the transmission part is used for receiving position switching power along a first direction and transmitting the position switching power to the stop valve core so as to drive the stop valve core to switch between the opening position and the closing position, and the transmission part maintains the stop valve core to be in a position after the last switching after the position switching power is removed. The stop valve provided by the application can maintain the valve position of the stop valve after switching without continuously applying power to the stop valve.

Description

Stop valve

Technical Field

The application relates to the technical field of valves, in particular to a stop valve.

Background

In the prior art, an electric stop valve driven by electromagnetic force is driven by electromagnetic coil to generate electromagnetic force, and the coil must be continuously electrified to maintain the valve position of the stop valve during the action. The electromagnetic coil of the electric shut-off valve consumes much power and has a short life due to easy heat generation.

Disclosure of Invention

The application aims to provide a stop valve, which can maintain the valve position of the stop valve after switching without continuously applying power to the stop valve.

The application provides a stop valve, which comprises a valve body, a stop valve core and an operating mechanism, wherein the stop valve core is arranged in the valve body, the operating mechanism is used for controlling the action of the stop valve core, the valve body is provided with a valve hole, the stop valve core is provided with an opening position for opening the valve hole and a closing position for closing the valve hole, the operating mechanism comprises a transmission part, the transmission part is used for receiving position switching power along a first direction and transmitting the position switching power to the stop valve core so as to drive the stop valve core to switch between the opening position and the closing position, and the transmission part maintains the stop valve core to be in a position after the last switching after the position switching power is removed.

Further, driving the shut-off spool to move includes driving the shut-off spool to rotate and/or driving the shut-off spool to translate in the first direction.

Further, the transmission part comprises a mounting hole, and the stop valve core is positioned in the mounting hole.

Further, driving the shut-off spool to move includes driving the shut-off spool to move within the mounting hole.

Further, the shut-off valve further includes a first resilient element that applies a force to the shut-off spool toward the valve bore when the shut-off spool is in the closed position.

Further, the shut-off valve spool includes a first valve spool and a second valve spool, the valve bores include a first valve bore and a second valve bore, in the closed position, one of the first valve spool and the second valve spool mates with the first valve bore, the other of the first valve spool and the second valve spool mates with the second valve bore, in the open position, the first valve spool and the second valve spool are disengaged from both the first valve bore and the second valve bore and the first valve bore and the second valve bore are in communication.

Further, the steering mechanism further includes an actuating portion for applying the position switching power to the transmission portion.

Further, the actuation portion includes an electromagnetic actuation portion.

Further, the drive portion includes pressure cap, screens structure and core bar, screens structure for the valve body is fixed to be set up, screens structure includes around a plurality of draw-in grooves of circumference distribution of first direction, pressure cap is located the radial inboard of screens structure, the core bar has keeping away from the first end of valve opening and being close to the second end of valve opening, the first end of core bar with pressure cap drivably cooperates, the second end of core bar is equipped with stop valve core, be provided with on the core bar first end with draw-in groove complex draw-in bar, wherein, pressure cap is used for receiving the position switching power, pressure cap is followed first direction promotes the core bar once can make the draw-in bar is from with one draw-in groove cooperation is changed to with the draw-in groove cooperation adjacent to this draw-in groove is thereby driven stop valve core switches over one time the position.

Further, the plurality of clamping grooves comprise first clamping grooves and second clamping grooves which are alternately distributed around the circumference of the first direction, and the bottoms of the first clamping grooves are far away from the valve hole along the first direction relative to the bottoms of the second clamping grooves.

Further, a clamping groove guide surface is arranged between the adjacent clamping grooves; and/or the end face of the first end of the clamping strip is provided with a clamping strip guide surface.

Further, a plurality of pressing teeth are arranged at the bottom of the pressing cap along the circumferential direction, pressing grooves are formed between the adjacent pressing teeth, the pressing cap pushes the core rod through the cooperation of the pressing grooves and the first ends of the clamping strips, and the first ends of the clamping strips move along the surfaces of the pressing teeth so that the clamping strips move towards the target clamping grooves.

Further, the transmission part further comprises a second elastic element, and the second elastic element applies force to the core rod towards the clamping structure.

Further, the shut-off valve includes a sealing structure disposed between the core pin and the valve body.

Based on the stop valve provided by the application, the transmission part can maintain the stop valve core at the position after the last switching after the position switching power is removed, so that the stop valve can be maintained at the valve position after the switching without continuously applying power to the stop valve.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

fig. 1 is a schematic cross-sectional structure of a shut-off valve according to an embodiment of the present application.

Fig. 2 is a schematic side perspective view of the shut-off valve of fig. 1.

Fig. 3 is a schematic structural view of the actuating mechanism of the shut-off valve shown in fig. 1, with the shut-off valve element correspondingly in the open position.

Fig. 4 is a schematic partial structural view of the actuating mechanism of the shut-off valve shown in fig. 1, with the shut-off valve element correspondingly in the closed position.

In fig. 1 to 4, each reference numeral represents: 1. a first electromagnetic coil; 2. a second electromagnetic coil; 3. a valve core return spring; 4. a core bar reset spring; 5. an O-ring; 6. a clamping structure; 61. a first clamping groove; 62. a second clamping groove; 63. a first card slot guide surface; 64. a second slot guide surface; 7. pressing the cap; 71. tooth pressing; 72. pressing a groove; 8. a valve body; 81. a valve hole; 9. a core bar; 91. a mounting hole; 92. clamping strips; 93. a clamping strip guide surface; 10. and the valve core is cut off.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms are not meant to have any special meaning unless otherwise indicated, so that the scope of the present application is not to be construed as being limited.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

As shown in fig. 1 to 4, an embodiment of the present application provides a shut-off valve. The shut-off valve comprises a valve body 8, a shut-off valve core 10 and an operating mechanism. The valve body 8 includes a valve hole 81 therein. The shut-off valve spool 10 has an open position to open the valve hole 81 and a closed position to close the valve hole 81.

In fig. 1 to 4, the valve body is a hollow cylinder as a whole. Two opposed valve holes are provided at the lower end of the valve body 8. One of the two valve bores serves as a fluid inlet and the other serves as a fluid outlet. A pipeline joint is arranged at the valve hole of the valve body 8. In this embodiment, the outer periphery of the pipe joint is provided with external threads. In this embodiment, the steering mechanism includes a driving portion and a transmitting portion.

The transmission portion is for receiving position switching power in the first direction and transmitting the position switching power to the cut-off spool 10 to drive the cut-off spool 10 to switch between the open position and the closed position. And the transmission part maintains the cut-off valve core 10 in the position after the last switching after the position switching power is removed.

Since the transmission portion can maintain the cut-off valve spool 10 at the position after the last switching after the position switching power is removed, the cut-off valve can be maintained at the valve position after the switching without continuously applying power to the cut-off valve.

In the present embodiment, the first direction corresponds to the up-down direction in fig. 1 to 4. Meanwhile, the first direction is also the axial direction of the valve body 8.

In this embodiment, driving the shut off spool 10 in motion includes driving the shut off spool 10 in rotation and/or driving the shut off spool 10 in translation in a first direction.

As shown in fig. 1 to 4, the transmission part includes a press cap 7, a detent structure 6 and a core bar 9. The press cap 7, the clamping structure 6 and the core rod 9 are coaxially arranged in the valve body 8 with the valve body 8.

Preferably, the transmission portion includes a mounting hole 91, and the shut-off spool 10 is located in the mounting hole 91. In the present embodiment, the mounting hole 91 is provided on the core bar 9 of the transmission part. The stop valve core 10 is arranged in the mounting hole 91 of the transmission part, so that the stop valve core 10 can move along with the transmission part, thereby facilitating the transmission part to control the stop valve core 10 to perform the required movement.

In this embodiment, preferably, the driving of the shut off spool 10 includes the driving of the shut off spool 10 to move within the mounting hole 91. The movement of the shut-off valve 10 in the mounting hole 91 allows the shut-off valve 10 to be properly engaged with the valve hole 81 when necessary, and the shut-off valve is controlled to be tightly closed.

In this embodiment, preferably, the shut-off valve further includes a first elastic member that applies a force toward the valve hole 81 to the shut-off spool 10 when the shut-off spool 10 is in the closed position. As shown in fig. 1, in this embodiment, the first elastic element is a spool return spring 3.

The shut-off valve spool 10 includes a first valve spool and a second valve spool, the valve hole 81 includes a first valve hole and a second valve hole, and in the closed position, one of the first valve spool and the second valve spool cooperates with the first valve hole to block the first valve hole, and the other of the first valve spool and the second valve spool cooperates with the second valve hole to block the second valve hole. In the open position, the first and second spools are disengaged from and in communication with the first and second valve bores. This arrangement can simultaneously open or close the valve hole 81, so that the safety at the time of closing the shut-off valve can be made higher.

The actuating part is used for applying position switching power to the transmission part. In this embodiment, the actuating portion includes an electromagnetic actuating portion. As shown in fig. 1 to 4, the electromagnetic actuating portion includes a first electromagnetic coil 1 and a second electromagnetic coil 2. The first electromagnetic coil 1 and the second electromagnetic coil 2 are controlled to be electrified or not and the electrified direction can be controlled to repel each other, so that position switching power can be applied to the transmission part and the stop valve core 10 are driven to execute corresponding actions.

Is fixedly arranged relative to the valve body 8. The detent structure 6 comprises a plurality of detents distributed circumferentially around the first direction. In this embodiment, the detent structure 6 comprises a ferrule fixed to the radially inner side of the valve body 8.

The press cap 7 is located radially inward of the detent structure 6, and is configured to receive position switching power and press down the core pin 9 to transmit the position switching power to the core pin 9.

The core rod 9 has a first end (upper end in fig. 1 to 4) remote from the valve hole 81 and a second end (lower end in fig. 1 to 4) close to the valve hole 81. The first end of the core rod 9 is drivably engaged with the press cap 7, and the second end of the core rod 9 is provided with a mounting hole 91 for mounting the aforementioned shut-off spool 10. The core bar 9 is provided with a clamping bar 92 with a first end matched with the clamping groove. Wherein, pushing the core rod 9 once along the first direction by the press cap 7 can switch the clamping strip 92 from being matched with one clamping groove to being matched with the clamping groove adjacent to the clamping groove, so as to drive the stop valve core 10 to switch the position once.

In the first embodiment, the plurality of the card slots of the card-holding structure 6 include the first card slots 61 and the second card slots 62 alternately distributed around the circumference of the first direction. The groove bottom of the first clamping groove 61 is distant from the valve hole 81 in the first direction with respect to the groove bottom of the second clamping groove 62. The arrangement is such that the position of the shut-off spool in the first direction differs between the closed position and the open position.

As shown in fig. 3 and 4, a clamping groove guiding surface is arranged between adjacent clamping grooves; and/or the end face of the first end of the clip strip 92 has a clip strip guide surface 93.

In the present embodiment, as shown in fig. 3 and 4, a first card slot guide surface 63 inclined upward is provided in the direction from the second card slot 62 toward the first card slot 61 in the direction in which the core pin 9 rotates, and a second card slot guide surface 64 inclined upward is provided in the direction from the first card slot 61 toward the second card slot 62.

The arrangement of the clamping groove guide surface and the clamping strip guide surface 93 can enable the position switching of the stop valve core 10 to be smoother.

In this embodiment, the bottom of the press cap 7 is provided with a plurality of press teeth 71 along the circumferential direction, a press groove 72 is formed between adjacent press teeth 71, the press cap 7 pushes the core rod 9 through the cooperation of the press groove 72 and the first end of the clip 92, and the first end of the clip 92 moves along the surface of the press teeth 71 to move the clip 92 toward the target clip groove. In this embodiment, the pressing teeth 71 are triangular pressing teeth 71, and when the bottom surface of the triangular pressing teeth 71 moves down to be flush with or slightly downward from the corresponding clamping groove guiding surface, the clamping strip 92 in the pressing groove 72 enters the next clamping groove under the guiding action of the corresponding clamping groove guiding surface.

As shown in fig. 1 to 4, the stop valve of the present embodiment further includes a second elastic element that applies a force to the stem 9 toward the detent structure 6. In this embodiment, the second elastic element is a core return spring 4. The first end (corresponding to the upper end of fig. 1 to 4) of the core bar return spring 4 abuts on the step surface of the boss of the core bar 9, and the second end (corresponding to the lower end of fig. 1 to 4) of the core bar return spring 4 abuts on the step surface provided on the inner wall of the valve body 8.

In this embodiment, the core rod 9 of the transmission part synchronously rotates during the movement along the first direction, so as to drive the stop valve core 10 to rotate during the movement along the first direction, and the stop valve core 10 is kept at the switched position by the cooperation of the clamping strip 92 and the clamping groove, so that the force acting on the transmission part can be removed after one valve core switching power is applied to the transmission part, and the valve position can be kept unchanged. When the solenoid is used as the driving part, the stop valve core 10 can be operated by one-time electromagnetic thrust and the valve position after the operation can be maintained, and the stop valve is not required to be kept at the position by electric energy, so that the electric energy can be saved, the heating of the solenoid can be prevented, and the service life of the solenoid can be prolonged.

As shown in fig. 3, in this mated state of the core rod 9 and the detent structure 6, the detent strip 92 mates with the first detent 61, the core rod 9 is in a relatively high position, the second end bottom surface of the core rod 9 is higher than the first valve hole and the second valve hole, the first valve hole and the second valve hole are not blocked to communicate, and the shut-off valve is opened.

As shown in fig. 4, in this mated state of the stem 9 and the detent structure 6, the detent 92 mates with the second detent 62, the stem 9 is in a relatively low position, the mounting hole 91 at the second end of the stem 9 is coaxial with the first valve hole and the second valve hole, so that the first valve element and the second valve element are coaxial with the first valve hole and the second valve hole, the first valve element protrudes radially outward of the stem 9 to mate with one of the first valve hole and the second valve hole to seal the valve hole, the second valve element protrudes radially outward of the stem 9 to mate with the other of the first valve hole and the second valve hole to seal the valve hole, and both the first valve hole and the second valve hole are closed, so that the shutoff valve is closed.

The above operation process of the shut-off valve is briefly described as follows:

the stop valve core 10 is in a closed state, and the core rod 9 and the clamping structure 6 are in a matched state shown in fig. 4.

The stop valve is electrified, the second electromagnetic coil 2 can move downwards to press the pressing cap 7 under the condition that the same poles of the first electromagnetic coil 1 and the second electromagnetic coil 2 repel each other, the pressing cap 7 presses the core bar 9 to move downwards, when the clamping bar guide surface 93 reaches or exceeds the first clamping groove guide surface 63, the position pulse is interrupted, the core bar 9 moves upwards under the elastic force of the core bar reset spring 4, and the clamping bar 92 is guided to reach the first clamping groove 61 through the surface of the pressing tooth 71 and the first clamping groove guide surface 63. In this process, the shut-off valve 10 is not only moved upward, but also rotated so as to be positioned at a position isolated from the valve hole 81, and the shut-off valve 10 is compressed by the inner wall of the valve body 8 to be retracted, and thus, the shut-off function cannot be performed. The core bar 9 and the locking structure 6 are matched with each other as shown in fig. 3.

When the stop valve is pulsed again, the pressing cap 7 presses the valve core to move downwards, the pulse is interrupted after the clamping strip guide surface 93 reaches or exceeds the position of the second clamping groove guide surface 64, the core rod 9 moves upwards under the elastic force of the core rod reset spring 4, and the clamping strip 92 is guided to reach the second clamping groove 62 through the surface of the pressing tooth 71 and the second clamping groove guide surface 64. In the process, the stop valve core 10 moves downwards and rotates along with the valve core so as to be positioned opposite to the valve hole 81, the stop valve core 10 stretches out under the action of the valve core return spring 3, and the valve core 10 is matched with the corresponding valve hole 81 to seal the valve hole 81, so that the stop valve is closed.

The operations of opening the shut-off valve and closing the shut-off valve are performed as needed according to the above procedure.

In this embodiment, in order to smoothly switch the shut-off valve spool 10 between the open position and the closed position, one end of the shut-off valve spool 10, which cooperates with the valve hole 81, is designed to be a convex smooth curved surface, preferably a spherical crown surface.

In this embodiment, in order to prevent the fluid in the shut-off valve from leaking through the gap between the core rod 9 and the valve body 8, a sealing structure is further provided between the core rod 9 and the valve body 8. In particular, in this embodiment, the sealing structure includes two O-rings 5 arranged in sequence along the first direction.

As can be seen from the above description, the stop valve of the present embodiment can achieve at least one of the following technical effects:

the stop valve can be maintained at the valve position after switching without continuously applying power to the stop valve;

when the electromagnetic actuating part is adopted for actuation, the electric power can be saved, and the coil heating and energy consumption caused by continuous power supply can be reduced.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same; while the application has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present application or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the application, it is intended to cover the scope of the application as claimed.

Claims

1. Stop valve, comprising a valve body (8), a stop valve core (10) arranged in the valve body (8) and an operating mechanism for controlling the action of the stop valve core (10), wherein the valve body (8) is provided with a valve hole (81), the stop valve core (10) is provided with an opening position for opening the valve hole (81) and a closing position for closing the valve hole (81), and the stop valve is characterized in that the operating mechanism comprises a transmission part, the transmission part is used for receiving position switching power along a first direction and transmitting the position switching power to the stop valve core (10) so as to drive the stop valve core (10) to switch between the opening position and the closing position, the transmission part maintains the position of the stop valve core (10) after the last switching after the position switching power is removed, the transmission part comprises a mounting hole (91), the stop valve core (10) is positioned in the mounting hole (91), and driving the stop valve core (10) to move comprises driving the stop valve core (10) to move in the mounting hole (91).

2. The shut-off valve according to claim 1, wherein driving the shut-off spool (10) in motion comprises driving the shut-off spool (10) in rotation and/or driving the shut-off spool (10) in translation in the first direction.

3. The shut-off valve according to claim 1, further comprising a first elastic element that applies a force to the shut-off spool (10) towards the valve bore (81) when the shut-off spool (10) is in the closed position.

4. The shut-off valve of claim 1 wherein the shut-off spool (10) comprises a first spool and a second spool, the valve bore (81) comprises a first valve bore and a second valve bore, one of the first spool and the second spool mates with the first valve bore in the closed position, the other of the first spool and the second spool mates with the second valve bore, and the first spool and the second spool are disengaged from and communicate with both the first valve bore and the second valve bore in the open position.

5. The shut-off valve of claim 1 wherein the operating mechanism further comprises an actuating portion for applying the position switching power to the transmission portion.

6. The shut-off valve of claim 5 wherein the actuator comprises an electromagnetic actuator.

7. The shut-off valve according to any one of claims 1 to 6, wherein the transmission part comprises a press cap (7), a detent structure (6) and a core rod (9), the detent structure (6) being fixedly arranged relative to the valve body (8), the detent structure (6) comprising a plurality of detents circumferentially distributed around the first direction, the press cap (7) being located radially inwards of the detent structure (6), the core rod (9) having a first end remote from the valve bore (81) and a second end close to the valve bore (81), the first end of the core rod (9) being in drivable engagement with the press cap (7), the second end of the core rod (9) being provided with the shut-off valve core (10), the core rod (9) being provided with detents (92) of which the first end is in engagement with the detents, wherein the press cap (7) is adapted to receive the position switching power, the press cap (7) pushing the detents (92) in the first direction to switch the detents from one adjacent to the one of the detents (10).

8. The shut-off valve according to claim 7, wherein the plurality of clamping grooves includes first clamping grooves (61) and second clamping grooves (62) alternately distributed around a circumference of the first direction, a groove bottom of the first clamping groove (61) being distant from the valve hole (81) in the first direction with respect to a groove bottom of the second clamping groove (62).

9. The shut-off valve of claim 7 wherein adjacent said detents have detent guide surfaces therebetween; and/or the end face of the first end of the clamping strip (92) is provided with a clamping strip guide surface (93).

10. The stop valve according to claim 7, wherein a plurality of pressing teeth (71) are circumferentially provided at the bottom of the pressing cap (7), a pressing groove (72) is formed between adjacent pressing teeth (71), the pressing cap (7) pushes the core rod (9) through the cooperation of the pressing groove (72) and the first end of the clip strip (92), and the first end of the clip strip (92) moves along the surface of the pressing teeth (71) to move the clip strip (92) toward a target clip groove.

11. Stop valve according to claim 7, characterized in that the transmission further comprises a second elastic element which exerts a force on the core rod (9) towards the detent structure (6).

12. Stop valve according to claim 7, characterized in that it comprises a sealing structure arranged between the core rod (9) and the valve body (8).