CN214093113U - Emergency locking type valve - Google Patents

Abstract

The utility model relates to an emergency locking type valve, which comprises a valve body, a valve core component, a valve cover and a valve cover sleeve, wherein the valve core component is arranged in the valve body, the valve cover is matched with the valve cover sleeve and covers the valve body, the valve cover sleeve is sleeved on the valve cover and can rotate relative to the valve cover so as to control the valve core component to open and close the emergency locking type valve; a locking assembly is arranged between the valve cover and the valve cover sleeve, the locking assembly comprises a locking piece and an elastic connecting piece, one side of the valve cover sleeve facing the valve cover is provided with a mounting groove, one side of the valve cover facing the valve cover sleeve is provided with a one-way rotating groove, and the depth of the one-way rotating groove becomes shallow gradually along the rotating direction of the valve cover sleeve valve; one end of the locking piece abuts against the bottom wall of the mounting groove through the elastic connecting piece, and the other end of the locking piece abuts against the bottom wall of the unidirectional rotation groove. This valve can be under emergency, also can close the valve through the key, and then avoid appearing can not in time maintain and water waste scheduling problem.

Description

Emergency locking type valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to an emergency locking type valve.

Background

The existing valve with a key generally needs to control the opening or closing of the valve through the key so as to solve the possible problems of arrearage and water stealing and the like. However, in an emergency, if a water leakage phenomenon occurs, the valve cannot be closed in time, and further, problems of incapability of timely maintenance, water resource waste and the like easily occur.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for an improved emergency lock valve. The valve can be closed without a key under an emergency condition, so that the problems of incapability of timely maintenance, water resource waste and the like are avoided; and the valve must be re-opened after closing the valve by using a key.

An emergency locking type valve comprises a valve body, a valve core assembly, a valve cover and a valve cover sleeve, wherein the valve core assembly is arranged in the valve body, the valve cover is matched with the valve cover sleeve and covers the valve body, and the valve cover sleeve is sleeved on the valve cover and can rotate relative to the valve cover so as to control the valve core assembly to open and close the emergency locking type valve;

a locking assembly is arranged between the valve cover and the valve cover sleeve and comprises a locking piece and an elastic connecting piece, one side of the valve cover sleeve, which faces the valve cover, is provided with a mounting groove, one side of the valve cover, which faces the valve cover sleeve, is provided with a one-way rotating groove, and the depth of the one-way rotating groove becomes shallower gradually along the rotating direction of the valve cover sleeve valve; one end of the locking piece abuts against the bottom wall of the mounting groove through the elastic connecting piece, and the other end of the locking piece abuts against the bottom wall of the unidirectional rotation groove;

the locking part partially extends out of the mounting groove and is limited in the one-way rotating groove along the rotating direction of the valve cover sleeve valve;

the retaining member moves along the rotating direction of the valve cover sleeve valve, and the elastic connecting member is gradually compressed and contracted to the mounting groove through the support of the bottom wall of the one-way rotating groove so as to be separated from the limit of the one-way rotating groove.

Further, the one-way rotation groove becomes shallow gradually until the one-way rotation groove is flush with the end face of the valve cover.

Furthermore, the number of the one-way rotating grooves is multiple, and the one-way rotating grooves are uniformly distributed along the rotating center of the valve cover sleeve.

Further, a plurality of the unidirectional rotation grooves are arranged at intervals.

Furthermore, the one-way rotating groove is an arc-shaped groove, and the circle center corresponding to the one-way rotating groove coincides with the rotating center of the valve cover sleeve.

Furthermore, the mounting grooves are arranged corresponding to the one-way rotating grooves, and the mounting grooves are uniformly distributed along the center of the valve cover sleeve.

Further, the maximum depth of the one-way rotation groove is smaller than the height of the locking member.

Further, the inside wall orientation of valve gap cover the valve gap extends and forms and connects the convex part, the inside wall correspondence of valve gap has seted up the rotation groove, connect the convex part and stretch into rotate the inslot, and make the valve gap cover can for the valve gap rotates in succession.

Furthermore, the valve bonnet cover deviates from the protruding rotation convex rib that establishes of terminal surface of valve bonnet, it follows to rotate the convex rib the radial extension of valve bonnet cover is used for twisting the valve bonnet cover.

Further, emergency locking type valve includes the key, the key adaptation in the valve bonnet cover, be equipped with magnetism portion on the key, magnetism portion can attract the retaining member shrink extremely in the mounting groove to it is in to relieve the retaining member spacing in the unidirectional rotation inslot.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the valve shown in FIG. 1;

fig. 3 is a schematic structural view of a valve cover according to another embodiment of the present invention;

FIG. 4 is a schematic diagram of a cap sleeve of the valve of FIG. 1;

FIG. 5 is a schematic view of the bonnet sleeve of FIG. 4 from another perspective;

fig. 6 is a schematic structural view of a valve cover sleeve according to another embodiment of the present invention;

FIG. 7 is a schematic view of the bonnet sleeve of FIG. 6 from another perspective;

FIG. 8 is a schematic view of a key in the valve of FIG. 1;

FIG. 9 is a schematic structural view of a valve cover of the valve shown in FIG. 1;

fig. 10 is a schematic structural view of a valve cover according to another embodiment of the present invention;

fig. 11 is a schematic structural view of a valve cover according to another embodiment of the present invention.

Description of the element reference numerals

100. An emergency locking type valve; 10. a valve body; 11. a valve cavity; 20. a valve core assembly; 21. a valve stem; 22. a valve flap; 30. a valve cover assembly; 31. a valve cover; 311. a rotating groove; 312. a unidirectional rotation groove; 32. a valve cover sleeve; 321. a connecting projection; 322. assembling a groove; 323. mounting grooves; 324. rotating the convex rib; 40. a key; 41. a body; 411. a first groove; 412. a magnetic part; 42. a torsion portion; 50. a locking assembly; 51. a locking member; 52. an elastic connecting piece.

The present invention is described in further detail with reference to the drawings and the detailed description.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

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

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an emergency locking valve 100 according to an embodiment of the present invention; fig. 2 is a schematic cross-sectional view of the valve 100 shown in fig. 1.

The utility model discloses an emergency locking type valve 100 installs in the pipeline to the fluid circulation state in the control pipeline. The emergency locking type valve 100 may be a ball valve, a gate valve, a butterfly valve, a stop valve, or the like, and the kind thereof is not particularly limited.

The valve 100 includes a valve body 10 and a valve core assembly 20. The valve body 10 is provided with a corresponding valve cavity 11 and an inlet (not numbered) and an outlet (not numbered) which are communicated with the valve cavity 11; the valve core assembly 20 is arranged in the valve cavity 11 and controls the communication state of the inlet and the outlet. The inlet and the outlet of the valve body 10 are used for connecting with an external pipeline, and the valve cavity 11 is used for accommodating the valve core assembly 20; the valve core assembly 20 is used for matching with the inner wall of the valve cavity 11 and controlling the communication state of the inlet and the outlet. The valve core assembly 20 is movable within the valve chamber 11 and controls the communication between the inlet and outlet ports.

The valve body 10 is also opened with a mounting port (not numbered) communicating with the outside. The mounting opening is substantially circular and communicates with the valve chamber 11. Preferably, the center of the mounting opening coincides with the axis of the valve chamber 11. The mounting opening is for mounting the valve cartridge assembly 20.

The valve core assembly 20 comprises a valve rod 21 and a valve clack 22; the valve stem 21 and the flap 22 are connected to each other. The valve rod 21 partially extends into the valve cavity 11 through the mounting port, and the other part extends out of the mounting port to be connected with other parts of the valve 100; the valve flap 22 is arranged in the valve chamber 11 between the inlet and the outlet. The valve rod 21 is used for driving the valve clack 22 to move in the valve cavity 11; the flap 22 is used to control the communication between the inlet and outlet ports so that the valve 100 can be opened or closed accordingly. When an external force is applied to the valve rod 21, the valve rod 21 drives the valve flap 22 to move in the valve cavity 11 to control the communication state between the inlet and the outlet, thereby opening or closing the valve 100.

In the present embodiment, the valve flap 22 may be disposed according to the specific type of the valve 100, and is not limited herein. Rotation of the valve stem 21 can cause the flap 22 to rotate about the axis of the valve chamber 11 or to move axially along the valve chamber 11.

The valve 100 also includes a bonnet assembly 30. The valve cover assembly 30 covers the mounting opening of the valve body 10 and can be sleeved on one end of the valve rod 21 far away from the valve clack 22. The valve cover assembly 30 is used for covering the mounting opening and driving the valve core assembly 20 to move.

As shown in fig. 1 and 2, the valve cover assembly 30 includes a valve cover 31 and a valve cover sleeve 32. The valve cover 31 is arranged at the mounting opening of the valve body 10 in a covering manner; the bonnet sleeve 32 covers the bonnet 31 at a position far away from the valve body 10 and sleeves the valve rod 21, and the bonnet sleeve 32 can rotate relative to the bonnet 31. The valve cover 31 is used for covering the mounting opening of the valve body 10; the cover sleeve 32 is adapted to cooperate with the valve core assembly 20 and control the opening of the valve 100. After the valve cap 31 is connected to the valve body 10 in a sealing manner, the valve cap sleeve 32 is sleeved on the valve rod 21 and can drive the valve flap 22 to move through the valve rod 21, so as to control the opening or closing of the valve 100.

Referring to fig. 3, fig. 3 is a schematic structural view of a valve cover 31 according to another embodiment of the present invention.

As shown in fig. 2 and 3, the bonnet 31 is substantially in the shape of a cover, and a through hole (not shown) for passing the valve rod 21 is opened at the center of the end surface of the bonnet 31. Correspondingly, a sealing ring (not numbered) is sleeved on the outer periphery of the valve rod 21; when the valve rod 21 is inserted into the valve cap 31, the part of the valve rod 21, which is sleeved with the sealing ring, is movably and hermetically connected with the inner wall of the valve cap 31. With the arrangement, the valve cover 31 and the valve body 10 are arranged separately, so that the valve core assembly 20 and the internal elements can be conveniently installed; the movable sealing connection between the two can prevent the liquid in the valve cavity 11 from leaking from the through hole of the valve cover 31.

In one embodiment, the bonnet 31 is connected to the valve body 10 by a screw seal. By the arrangement, the connection structure between the valve cover 31 and the valve body 10 is relatively simple, and the sealing performance between the two parts is good. It is understood that in other embodiments, the bonnet 31 and the valve body 10 may be sealingly connected by a snap fit or the like.

Preferably, a sealing element (not numbered) is disposed between the bonnet 31 and the valve body 10 to further enhance the sealing performance of the bonnet and the valve body, so as to better prevent the liquid inside the valve body 10 from leaking.

Referring to fig. 4, fig. 4 is a schematic structural diagram of the valve cover 32 of the valve 100 shown in fig. 1.

As shown in fig. 1, 2, and 4, the bonnet cover 32 is substantially in the shape of a cover, the bonnet cover 32 is fitted to an end surface of the bonnet 31 away from the valve body 10, and the bonnet cover 32 is rotatable with respect to the bonnet 31. Specifically, the inner side wall of the bonnet cover 32 extends toward the bonnet 31 and forms a connection protrusion 321; correspondingly, the outer peripheral side of the bonnet 31 is opened with a rotation groove 311 corresponding to the coupling protrusion 321. The rotation groove 311 is an annular groove, and the outer diameter of the sidewall of the rotation groove 311 is larger than the outer diameter of the connection protrusion 321, so that when the connection protrusion 321 extends into the rotation groove 311, the connection protrusion 321 needs to be pressed into the rotation groove 311 by external force, and the connection protrusion 321 is limited from coming out of the rotation groove 311 by the sidewall of the rotation groove 311. With the arrangement, the valve cover sleeve 32 can rotate relative to the valve cover 31, and the valve cover sleeve 32 is not easy to separate from the valve cover 31; and the annular rotation groove 311 is provided so that the cap housing 32 can rotate relative to the cap 31 in a plurality of consecutive rotations.

It is understood that the connecting protrusions 321 may be a continuous ring structure or protrusions arranged at intervals, as long as the connecting protrusions 321 can rotate in the rotating groove 311; if continuous rotation of the cap housing 32 with respect to the cap 31 is not considered, the annular rotation groove 311 may be provided as a half-annular groove, for example, a half-annular groove corresponding to a central angle of 90 ° or 180 °, as long as rotation of the coupling protrusion 321 in the rotation groove 311 is achieved.

As shown in fig. 4, the bonnet cover 32 extends toward the side of the bonnet 31 in a direction away from the bonnet 31 and forms a mounting portion (not numbered). The mounting portion is formed with a mounting groove 322. The part of the valve rod 21 extending out of the valve cover 31 is embedded in the valve cover sleeve 32 and can move correspondingly with the rotation of the valve cover sleeve 32.

In one embodiment, the fitting groove 322 is used to embed a portion of the valve stem 21 protruding from the bonnet 31. Specifically, the fitting groove 322 is substantially kidney-shaped; correspondingly, the end of the valve rod 21 extending out of the valve cover 31 is provided with a kidney-shaped structure matched with the assembling groove 322, and forms a non-circular fit with the inner wall of the assembling groove 322, so that the valve rod 21 can move along with the assembling groove under the action of the valve cover sleeve 32.

It will be appreciated that in other embodiments, the fitting slot 322 may have other shapes, such as a square slot, and the end of the valve stem 21 fits into the fitting slot 322, so long as a non-circular fit between the two is achieved and the valve stem 21 is driven to move.

In one embodiment, as shown in fig. 1 and 2, in order to enable the valve 100 to be closed or opened only under specific conditions, the valve 100 further includes a key 40. The key 40 is normally separated from the valve body 10 or the bonnet assembly 30; the key 40 is adapted to engage the bonnet sleeve 32 and to cause the bonnet sleeve 32 to rotate when it is desired to control the opening or closing of the valve 100.

The key 40 includes a columnar body 41 and a torsion portion 42 radially penetrating the body 41. When the key 40 is engaged with the bonnet cover 32, the body 41 and the torsion portion 42 are relatively fixed.

The existing valve with a key generally needs to control the opening or closing of the valve through the key so as to solve the possible problems of arrearage and water stealing and the like. However, in an emergency, if a water leakage phenomenon occurs, the valve cannot be closed in time, and further, problems of incapability of maintaining in time, water resource waste and the like easily occur.

To address the above-mentioned problems, the valve 100 further includes a locking assembly 50. The locking assembly 50 is disposed between the bonnet 31 and the bonnet sleeve 32 and is configured to restrict the bonnet sleeve 32 from being able to rotate in one direction relative to the bonnet 31, so that the valve 100 can rotate the bonnet sleeve 32 and correspondingly close the valve 100 in an emergency and without the key 40.

Specifically, as shown in fig. 2, 3 and 4, the locking assembly 50 includes a locking member 51 and an elastic connection member 52. Correspondingly, one side of the valve cover sleeve 32 facing the valve cover 31 is provided with an installation groove 323; one side of the valve cover 31 facing the valve cover sleeve 32 is provided with a one-way rotating groove 312, and the depth of the one-way groove becomes gradually shallower along the rotating direction of the valve cover sleeve 32 closing valve. The locker 51 is installed in the installation groove 323 of the cap housing 32 by the elastic connector 52; and one end of the locking member 51 abuts against the bottom wall of the mounting groove 323 through the elastic connecting member 52, and the other end abuts against the bottom wall of the one-way rotating groove 312. The locking member 51 is telescopically received in the receiving groove 323 by the elastic coupling member 52 and is capable of cooperating with the one-way rotation groove 312 to restrict one-way rotation of the cap housing 32.

When the bonnet sleeve 32 rotates along the valve opening direction, the locking member 51 can partially extend out of the mounting groove 323 under the action of the elastic connecting member 52 in the process of moving along with the bonnet sleeve 32 because the one-way rotating groove 312 is gradually deepened along the rotating direction of the valve opening of the bonnet 31; and with the further rotation of the locker 51, the portion of the locker 51 extending into the one-way rotation groove 312 is gradually deepened until the locker 51 abuts against the deepest sidewall of the one-way rotation groove 312. At this time, the bonnet sleeve 32 is unidirectionally restrained in the unidirectional rotation groove 312 by the locking assembly 50. The valve cover 32 cannot rotate in the valve opening direction by the abutment of the locking member 51 against the side wall of the one-way rotation groove 312.

When the bonnet cover 32 rotates along the valve-closing direction, the locking piece 51 moves along the rotating direction of the bonnet cover 32 for closing the valve, and the elastic connecting piece 52 is gradually compressed by the abutting of the bottom wall of the one-way rotating groove 312; at this time, the locker 51 is gradually contracted to the mounting groove 323 to be separated from the limit of the one-way rotation groove 312. Thereby, the bonnet sleeve 32 can be rotated in the valve closing direction until the valve 100 is closed.

When the valve 100 is in a closed state, if the locking member 51 cannot abut against the side wall of the one-way rotation groove 312, the bonnet sleeve 32 can drive the locking member 51 to rotate to the side wall of the one-way rotation groove 312 along the rotation direction of the bonnet sleeve 32 for opening, but because the rotation angle of the bonnet sleeve 32 is small, the amount of movement of the bonnet sleeve 32 that can drive the valve core assembly 20 is not enough to open the valve 100.

In one embodiment, as shown in FIG. 4, the number of locking assemblies 50 is multiple, and the number of mounting slots 323 generally corresponds to the number of locking assemblies 50. Each set of locking assemblies 50 is mounted in a corresponding mounting slot 323. Taking a single unidirectional rotation slot 312 and three corresponding sets of locking assemblies 50 as an example: the three sets of locking assemblies 50 are evenly distributed along the center of rotation of the bonnet sleeve 32. Any one of the three sets of locking assemblies 50 can fall into the same one-way rotation slot 312, and thus any one of the three sets of locking assemblies 50 can engage the one-way rotation slot 312 and restrict one-way rotation of the bonnet sleeve 32. Thereby, the rotation angle of the bonnet cover 32 in the valve opening direction is reduced.

It is understood that in other embodiments, one, two or more sets of locking assemblies 50 may be provided, as long as they can cooperate with the one-way rotation groove 312 and limit the rotation of the valve cover 32 in the valve opening direction; the locking assembly 50 may not be uniformly arranged, but only can be matched with the one-way rotation groove 312 and limit the rotation of the valve cover sleeve 32 towards the valve opening direction; correspondingly, the mounting grooves 323 may not be uniformly arranged, and are correspondingly arranged according to the specific positions of the unidirectional rotation grooves 312.

In one embodiment, retaining member 51 is generally cylindrical. The locker 51 is mounted in the mounting groove 323 by the elastic coupling member 52. When the locking member 51 corresponds to the one-way rotation groove 312, the locking member 51 can be protruded out of the mounting hole and abut against the bottom wall of the one-way rotation groove 312 by the elastic connection member 52. The height of the protruding portion of the locker 51 is smaller than the entire height of the locker 51, that is, the maximum depth of the one-way rotation groove 312 is smaller than the height of the locker 51 (since the end surface of the bonnet 31 and the end surface of the bonnet sleeve 32 contact each other). With this arrangement, the locking member 51 can be prevented from coming out of the mounting groove 323 to restrict the one-way rotation between the bonnet 31 and the bonnet sleeve 32.

It will be appreciated that in other embodiments, the retaining member 51 may be spherical or prismatic, etc., so long as it is capable of abutting the one-way rotation slot 312 and restricting one-way rotation of the cap housing 32.

Preferably, the locker 51 can be dropped into the unidirectional rotation groove 312 at 1/3 ~ 2/3 where the maximum height is its own height. With this arrangement, the strength with which the retaining member 51 restricts the one-way rotation of the cap housing 32 can be ensured.

In one embodiment, the depth of the mounting groove 323 is greater than or equal to the sum of the heights of the resilient coupling member 52 and the locking member 51 when the resilient coupling member 52 is compressed to the maximum limit. So configured, when the locking member 51 rotates along the one-way rotation groove 312 to the shallowest position or the end surface of the valve cap 31, at this time, the locking member 51 is completely retracted into the mounting groove 323; and the locker 51 can be moved in an opening direction or a closing direction. When the locker 51 continues to move in the direction of closing the valve, the locker 51 can fall to the deepest portion of the next one-way rotary valve or fall back to the deepest portion of the one-way rotary valve again, so that the rotation of the cap housing 32 can be restricted.

Referring to fig. 5 to 7, fig. 5 is a schematic structural view of the valve cover 32 shown in fig. 4 from another perspective; fig. 6 is a schematic structural view of a valve cover 32 according to another embodiment of the present invention; fig. 7 is a schematic view of the valve cover 32 of fig. 6 from another perspective.

In one embodiment, in order to facilitate the user to apply force to the bonnet sleeve 32, a rotation rib 324 is protruded on the end surface of the bonnet sleeve 32 away from the bonnet 31. The rotation rib 324 extends in the radial direction of the bonnet sleeve 32. The rotating rib 324 is used for applying force to the bonnet sleeve 32 from the outside and driving the bonnet sleeve 32 to twist. The rotational rib 324 is substantially elongated. Correspondingly, the side of the body 41 of the key 40 facing the bonnet sleeve 32 is recessed to form a first recess 411. The rotation rib 324 can be engaged with the first groove 411, and the body 41 and the bonnet sleeve 32 are rotated by the rotation portion 42. The rotation rib 324 enables the cap sleeve 32 to be rotated and the valve 100 to be closed by conventional tools or by manual adjustment without the key 40. So configured, it is convenient for the user to open or close the valve 100 by a key; in the case of the keyless entry 40, the user applies force to the bonnet sleeve 32 with a tool.

In the embodiment shown in fig. 6 and 7, the rotation bead 324 extends radially beyond the circumferential side of the cap sleeve 32 to allow a user to more easily grip the rotation bead 324 and twist the cap sleeve 32. It is understood that in other embodiments, the shape of the rotating rib 324 may be set according to actual requirements, as long as the convenience of holding or applying force and the driving of the bonnet cover 32 to rotate can be achieved.

Referring to fig. 8, fig. 8 is a schematic structural diagram of the key 40 in the valve 100 shown in fig. 1.

In one embodiment, the body 41 of the key 40 is provided with a magnetic portion 412 on the side facing the valve cover sleeve 32. The magnetic part 412 is made of a permanent magnetic substance and can attract the locking piece 51. Correspondingly, the locking member 51 is a magnetic steel, and the locking member 51 is made of a rigid material capable of being attracted by a magnetic object, such as iron. When the key 40 is sleeved on the valve cover 32, the magnetic part 412 can attract the locking member 51 to be completely contracted into the mounting groove 323, and at this time, the elastic connecting member 52 is compressed to the maximum limit. In this manner, the key 40 can unlock the locking assembly 50 from limiting the one-way rotation of the bonnet sleeve 32, and close or re-open the valve 100.

In one embodiment, the key 40 is a double-sided key, i.e., the end surfaces of the body 41 on opposite sides are aligned with the valve cover 32, i.e., can be used to unlock the valve 100. Alternatively, the magnetic part 412 penetrates end surfaces of both sides of the body 41; alternatively, the magnetic parts 412 are respectively disposed on two opposite end surfaces of the body 41, and the magnetic parts 412 are disposed in pairs. So set up for magnetic part 412 both sides all can be used for actuation retaining member 51, and unblock valve 100. It can be understood that if the magnetic part 412 has sufficient magnetic force, the magnetic part 412 can be only covered in the body 41, as long as the purpose of attracting the locking member 51 and unlocking the valve 100 can be achieved.

Preferably, the magnetic portions 412 are adapted to the number and location of the locking assemblies 50. The number of magnetic portions 412 or pairs of magnetic portions 412 can be the same as the locking assemblies 50, and the positions of the magnetic portions 412 can correspond to the corresponding locking assemblies 50.

Referring to fig. 9 to 11, fig. 9 is a schematic structural view of the valve cover 31 of the valve 100 shown in fig. 1; fig. 10 is a schematic structural view of a valve cover 31 according to another embodiment of the present invention; fig. 11 is a schematic structural view of a valve cover 31 according to another embodiment of the present invention.

In one embodiment, as shown in fig. 3 and 9-11, the unidirectional rotation slot 312 is an arc-shaped slot, and the corresponding center of the unidirectional rotation slot 312 coincides with the rotation center of the bonnet sleeve 32. With this arrangement, the locking member 51 can smoothly move in the unidirectional rotation groove 312, and is not easily touched with the side wall of the unidirectional rotation groove 312.

In one embodiment, since the one-way rotation groove 312 is gradually shallower along the rotation direction of the bonnet sleeve 32, the one-way rotation groove 312 is gradually shallower until it is flush with the end surface of the bonnet 31 in order to allow the locking member 51 to smoothly slide out of the one-way rotation groove 312. The arrangement is such that the retaining member 51 can slide out of the one-way rotation slot 312 in the direction of rotation of the bonnet sleeve 32 so that the retaining member 51 can rotate one-way and many times around the center of the bonnet sleeve 32.

It should be explained that: due to the limitations of the processing conditions, the one-way rotation groove 312 is difficult to keep absolutely flush with the end surface of the bonnet sleeve 32 after processing. In actual machining, a step is usually formed between the shallowest position of the one-way rotation groove 312 and the end surface of the bonnet sleeve 32, but the step does not affect the sliding and sliding of the locking member 51 in the one-way rotation groove 312. At this time, the shallow step which does not affect the sliding and sliding of the locking member 51 in the one-way rotation groove 312 also belongs to the case that the one-way rotation groove 312 becomes gradually shallow until it is flush with the end surface of the valve cover 31.

It will be appreciated that in other embodiments, there may be a step between the shallowest point of the one-way rotation slot 312 and the bonnet sleeve 32, as long as the retaining member 51 is allowed to move within the one-way rotation slot 312 in the direction of closing the valve.

In one embodiment, as shown in fig. 9 to 11, the number of the one-way rotation grooves 312 is plural, and the plural one-way rotation grooves 312 are uniformly arranged along the rotation center of the cap housing 32. In alternative embodiments, the number of unidirectional rotation slots 312 is two, three, or four. With this arrangement, the plurality of unidirectional rotation grooves 312 are provided to enable the locking member 51 to be restricted from moving in the valve opening direction at different positions of the valve cap 31. And the plurality of unidirectional rotation grooves 312 are arranged, the central angle corresponding to a single unidirectional rotation groove 312 is usually smaller than the central angle corresponding to one unidirectional rotation groove 312, so that the movement distance of the locking member 51 in the same unidirectional rotation groove 312 can be correspondingly reduced, and the rotating angle of the valve cover sleeve 32 towards the open valve can be correspondingly reduced.

It is understood that in other embodiments, the number of the one-way rotation grooves 312 may be one or more than five, and the one-way rotation grooves 312 may not be uniformly arranged, as long as they can be matched with the locker 51 and the elastic connector 52 and restrict the one-way rotation of the cap housing 32. When the number of the one-way rotation grooves 312 is one, since the locking member 51 can rotate with the cover 32 for a plurality of turns, the same one-way rotation groove 312 can restrict the movement of the locking member 51 in the valve opening direction for a plurality of times.

Preferably, a plurality of unidirectional rotation grooves 312 are provided at intervals. So set up for retaining member 51 can fall into unidirectional rotating groove 312 steadily, is difficult to cause the card pause.

In alternative embodiments, the number of unidirectional rotation slots 312 may be the same as or adapted to the locking assembly 50. Taking four unidirectional rotation slots 312 as an example, the number of the locking assemblies 50 is two, and the two locking assemblies 50 are arranged along the center of the bonnet sleeve 32 symmetrically. Thus, the two sets of locking assemblies 50 fall into the opposite unidirectional rotation grooves 312, and the two sets of locking assemblies 50 can limit the rotation of the valve cover 32 in the valve opening direction. So set up, not only can effectively control the valve cover sleeve 32 towards the pivoted gyration angle of valve opening direction, and the corresponding manufacturing cost that can save. It is understood that in other embodiments, one, three or more sets of locking assemblies 50 may be provided, as long as they can cooperate with the one-way rotation groove 312 and limit the rotation of the valve cover 32 in the valve opening direction.

The amount and position of one of the locking assemblies 50 and the one-way rotation slots 312 can be changed to correspondingly change the rotation angle of the cover 32 in the valve opening direction, so as to improve the control precision of the valve 100. For example, when the number of the one-way rotation grooves 312 is one, the number of the locking assemblies 50 is three, and the three sets of the locking assemblies 50 are uniformly arranged along the rotation center of the cap housing 32. Any one of the three locking assemblies 50 can fall into the same one-way rotation groove 312, so that the rotation angle of the valve cover sleeve 32 in the valve opening direction is correspondingly reduced.

An embodiment of the present invention provides an emergency locking valve, which can be closed without a key in an emergency, thereby avoiding problems such as maintenance failure and water waste; and the valve must be re-opened after closing the valve by using a key.

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.

Claims (10)

1. An emergency locking type valve comprises a valve body (10), a valve core assembly (20), a valve cover (31) and a valve cover sleeve (32), wherein the valve core assembly (20) is arranged in the valve body (10), the valve cover (31) is matched with the valve cover sleeve (32) and covers the valve body (10), and the valve cover sleeve (32) is sleeved on the valve cover (31) and can rotate relative to the valve cover (31) to control the valve core assembly (20) to open and close the emergency locking type valve;

the valve cover is characterized in that a locking assembly (50) is arranged between the valve cover (31) and the valve cover sleeve (32), the locking assembly (50) comprises a locking piece (51) and an elastic connecting piece (52), one side, facing the valve cover (31), of the valve cover sleeve (32) is provided with a mounting groove (323), one side, facing the valve cover sleeve (32), of the valve cover (31) is provided with a one-way rotating groove (312), and the depth of the one-way rotating groove (312) becomes shallow gradually along the rotating direction of the closed valve of the valve cover sleeve (32); one end of the locking piece (51) abuts against the bottom wall of the mounting groove (323) through the elastic connecting piece (52), and the other end abuts against the bottom wall of the one-way rotating groove (312);

the locking piece (51) partially extends out of the mounting groove (323) and is limited in the one-way rotating groove (312) along the rotating direction of the valve opening of the valve cover sleeve (32);

the locking piece (51) moves along the rotating direction of the valve closing of the valve cover sleeve (32), and the elastic connecting piece (52) is gradually compressed and contracted to the mounting groove (323) through the propping of the bottom wall of the one-way rotating groove (312) so as to be separated from the limiting of the one-way rotating groove (312).

2. Valve of the slam-locking type according to claim 1, characterized in that said one-way rotation groove (312) is gradually shallower until it is flush with the end face of said valve cover (31).

3. The panic locking type valve according to claim 1, characterized in that said unidirectional rotation groove (312) is in a plurality and a plurality of said unidirectional rotation grooves (312) are uniformly arranged along the rotation center of said cover case (32).

4. The slam-shut valve of claim 3 wherein a plurality of said unidirectional rotation slots (312) are spaced apart.

5. The slam-shut valve of claim 1 wherein the one-way slot (312) is an arcuate slot, the one-way slot (312) corresponding to a center of circle coincident with a center of rotation of the cap housing (32).

6. Valve of the emergency locking type according to claim 1, wherein the mounting grooves (323) are provided in correspondence with the one-way rotation grooves (312), and the mounting grooves (323) are uniformly arranged along the center of the cover housing (32).

7. Valve of the emergency locking type according to claim 1, characterized in that the maximum depth of the unidirectional rotation groove (312) is smaller than the height of the retaining member (51).

8. The valve of claim 1, wherein the inner side wall of the valve cover sleeve (32) extends towards the valve cover (31) and forms a connecting protrusion (321), the inner side wall of the valve cover (31) is correspondingly provided with a rotating groove (311), and the connecting protrusion (321) extends into the rotating groove (311) and enables the valve cover sleeve (32) to rotate relative to the valve cover (31).

9. Valve according to claim 1, wherein the end face of the cover sleeve (32) facing away from the valve cover (31) is provided with a rotary rib (324), the rotary rib (324) extending in the radial direction of the cover sleeve (32) and serving to twist the cover sleeve (32).

10. The valve of claim 9, comprising a key (40), wherein the key (40) is adapted to the valve cover sleeve (32), and wherein a magnetic portion (412) is provided on the key (40), and wherein the magnetic portion (412) can attract the locking member (51) to retract into the mounting groove (323) to release the locking member (51) from being retained in the one-way rotation groove (312).

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