CN215635220U - Ball valve assembly and shell and tube heat exchanger - Google Patents

Abstract

The application relates to the technical field of central air conditioners and discloses a ball valve assembly and a shell and tube heat exchanger. The ball valve assembly includes: a ball valve; the conical teeth are detachably connected with the ball valve; and the locking device locks the ball valve and the conical teeth under the condition that the ball valve is assembled on the conical teeth so as to limit the movement of the ball valve relative to the conical teeth. When the safety valve is disassembled, the problem that refrigerant leakage is caused due to the fact that the connection between the ball valve and the conical tooth is loosened due to reasons such as nonstandard operation of maintenance personnel and the like is solved.

Description

Ball valve assembly and shell and tube heat exchanger

Technical Field

The application relates to the technical field of central air conditioners, for example to a ball valve subassembly and shell and tube heat exchanger.

Background

At present, in a central air-conditioning water chilling unit, a shell and tube heat exchanger comprises a safety valve, the safety valve is installed on a shell and tube heat exchanger body through a cone tooth and a ball valve, and the safety valve needs to be regularly detached due to the need of checking the safety valve regularly.

After the shell and tube heat exchanger is used, although a special specification exists, (for example, the safety valve is disassembled by using a double wrench in a specified manner, wherein the ball valve is held by a lower wrench, and the safety valve is disassembled by operating an upper wrench), if a maintainer is unfamiliar with the disassembly of the safety valve, the ball valve connected with the safety valve is stressed to move due to reasons such as nonstandard operation of the maintainer, so that the connection between the ball valve and the conical tooth is loosened, a refrigerant is leaked, and huge loss is caused.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a ball valve assembly and a shell and tube heat exchanger, so that the problem that when a safety valve is disassembled, due to the fact that maintenance personnel operate in an irregular mode and the like, connection between a ball valve and a conical tooth is loosened, and therefore a refrigerant is leaked is solved.

The disclosed embodiment provides a ball valve assembly, includes: a ball valve; the conical teeth are detachably connected with the ball valve; and the locking device locks the ball valve and the conical teeth under the condition that the ball valve is assembled on the conical teeth so as to limit the movement of the ball valve relative to the conical teeth.

Optionally, one of the locking device and the ball valve is provided with a first protrusion, and the other is provided with a first groove matched with the first protrusion; one of the locking device and the awl teeth is provided with a second protrusion, and the other one of the locking device and the awl teeth is provided with a second groove matched with the second protrusion; the first projection is located in the first groove and the second projection is located in the second groove in a condition that the ball valve is fitted on the tap.

Optionally, the locking device comprises a nut, the nut comprising: the first end part is sleeved on the outer side of the ball valve; the second end part is sleeved on the outer side of the conical tooth; wherein the first protrusion is provided on one of an outer wall surface of the ball valve and an inner wall surface of the first end portion, and the first groove is provided on the other of the outer wall surface of the ball valve and the inner wall surface of the first end portion; the second protrusion is provided on one of an outer wall surface of the tapered tooth and an inner wall surface of the second end portion, and the second groove is provided on the other of the outer wall surface of the tapered tooth and the inner wall surface of the second end portion.

Optionally, the inner wall surface of the cross section of the first end part is a polygon, and the outer wall surface of the cross section of the ball valve is a polygon matched with the inner wall surface of the cross section of the first end part; the inner wall surface of the cross section of the second end part is a polygon, and the outer wall surface of the cross section of the cone tooth is a polygon matched with the inner wall surface of the cross section of the second end part.

Optionally, the ball valve comprises: the connecting section is used for being connected with the conical teeth; the assembly section is located the linkage segment deviates from one side of awl tooth, just the nut can be established the outside of assembly section can be to being close to the direction motion of awl tooth, wherein, the assembly section is followed the axial dimension of nut is greater than the thickness of nut.

Optionally, the nut is of a unitary construction; or, the nut includes along first nut section and the second nut section that the circumference of nut set gradually, first nut section with the second nut section can the phase separation or amalgamate mutually.

Optionally, the ball valve is in threaded connection with the taper teeth, and the unscrewing direction is a first direction;

the locking device comprises a nut, the nut is in threaded connection with one of the ball valve and the cone teeth, and the unscrewing direction is a second direction opposite to the first direction; the locking device further includes a coupling member through which the nut is coupled with the other one of the ball valve and the tap in a state where the ball valve is fitted on the tap to restrict rotation of the nut with respect to the other one of the ball valve and the tap.

Optionally, the connecting piece is detachably or movably connected with the nut, and the other of the ball valve and the cone teeth is detachably or movably connected with the connecting piece.

Optionally, the locking device is detachably connected with both the ball valve and the cone.

The embodiment of the present disclosure further provides a shell and tube heat exchanger, including: a safety valve; a ball valve assembly as claimed in any one of the preceding embodiments, said relief valve being connected to the ball valve.

The ball valve assembly and the shell and tube heat exchanger provided by the embodiment of the disclosure can realize the following technical effects:

after the ball valve is assembled on the awl, locking device restriction ball valve is for the awl motion, thus, when dismantling the relief valve, the ball valve receives external force and can not take place relative motion yet, thereby make the ball valve can not be connected not hard up with the awl, the protection refrigerant can not reveal, and simultaneously, because locking between ball valve and the awl, when dismantling the relief valve, no longer need two spanner work, adopt one-hand operation spanner also can dismantle the relief valve or install, and thus, the demand to dismantling and installing the operating space of valve has been reduced, make the application scope of relief valve wider, the availability factor of relief valve has been improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic structural diagram illustrating a locking device according to an embodiment of the present disclosure in a state where a ball valve and a cone are unlocked;

FIG. 2 is a schematic structural diagram of a locking device provided in the embodiment of the present disclosure in a state of locking a ball valve and a cone;

FIG. 3 is a schematic structural diagram of a ball valve provided in the embodiments of the present disclosure;

FIG. 4 is a schematic structural view of a perspective of a nut provided by embodiments of the present disclosure;

FIG. 5 is a schematic structural view from another perspective of a nut provided by embodiments of the present disclosure;

FIG. 6 is a schematic diagram illustrating a further perspective of a nut according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of an embodiment of the present disclosure providing a tapered tooth construction;

FIG. 8 is a schematic structural view of yet another nut provided by an embodiment of the present disclosure;

FIG. 9 is a schematic view of a portion of yet another nut provided in accordance with an embodiment of the present disclosure;

fig. 10 is a schematic structural view of another locking device provided in the second embodiment of the present disclosure in a state of locking a ball valve and a cone;

FIG. 11 is a schematic cross-sectional view of another locking device provided in the embodiment of the present disclosure in a state of locking a ball valve and a cone;

FIG. 12 is a schematic structural view of a connector provided in accordance with an embodiment of the present disclosure;

FIG. 13 is a schematic view of another embodiment of the present disclosure;

FIG. 14 is a structural schematic diagram of a perspective of yet another nut provided by embodiments of the present disclosure;

FIG. 15 is a structural schematic diagram illustrating another perspective of yet another nut provided by an embodiment of the present disclosure;

fig. 16 is a schematic structural diagram of a safety valve provided in an embodiment of the present disclosure.

Reference numerals:

10. a ball valve; 101. a first protrusion; 102. a connecting section; 103. assembling the sections; 20. a cone tooth; 201. a second protrusion; 202. assembling the matching section; 203. a groove; 30. a locking device; 301. a first groove; 302. a second groove; 303. 304, a nut; 3031. a first end portion; 3032. a second end portion; 3033. a first nut segment; 3034. a second nut segment; 3035. a first screw hole; 3041. a through hole; 305. a connecting member; 40. a safety valve.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Referring to fig. 1 to 16, an embodiment of the present disclosure provides a ball valve 10 assembly, where the ball valve 10 assembly includes a ball valve 10 and a cone 20, and the ball valve 10 is detachably connected to the cone 20; wherein the ball valve 10 assembly further comprises a locking device 30, and the locking device 30 locks the ball valve 10 and the tap 20 to limit the movement of the ball valve 10 relative to the tap 20 in a state that the ball valve 10 is assembled on the tap 20.

The ball valve 10 is detachably connected with the conical teeth 20, the ball valve 10 is convenient to replace and maintain, but the refrigerant can be protected from leakage after the ball valve 10 is connected with the conical teeth 20, so the ball valve 10 and the conical teeth 20 cannot be easily detached under the assembling condition, but under some conditions, for example, when the ball valve 10 is connected with the safety valve 40, the safety valve 40 needs to be regularly checked, so the safety valve 40 needs to be frequently detached, the force can be applied to the ball valve 10 when the safety valve 40 is detached, the ball valve 10 and the conical teeth 20 cannot be loosened due to the fact that the operation is not standard, the locking device 30 enables the ball valve 10 and the conical teeth 20 to be under the assembling condition, the ball valve 10 is under the action of external force, the relative motion cannot occur, and therefore the ball valve 10 cannot be connected with the conical teeth 20 to be loosened.

The first embodiment is as follows:

as shown in fig. 3 to 5, one of the locking device 30 and the ball valve 10 is provided with a first protrusion 101, and the other is provided with a first groove 301 matched with the first protrusion 101; one of the locking device 30 and the awl teeth 20 is provided with a second protrusion 201, and the other one is provided with a second groove 302 matched with the second protrusion 201; in a state where the ball valve 10 is fitted on the tap 20, the first projection 101 is located in the first recess 301, and the second projection 201 is located in the second recess 302.

The locking device 30 is connected with the ball valve 10 through the first protrusion 101 and the first groove 301, and when the first protrusion 101 is located in the first groove 301, the positions of the locking device 30 and the ball valve 10 are relatively fixed through the limiting effect of the first protrusion 101 and the first groove 301, so that the ball valve 10 and the locking device 30 cannot move relatively; the locking device 30 is connected with the awl teeth 20 through the second protrusion 201 and the second groove 302, and when the second protrusion 201 is located in the second groove 302, the locking device 30 and the awl teeth 20 are relatively fixed through the limiting effect of the second protrusion 201 and the second groove 302, so that the awl teeth 20 and the locking device 30 cannot move relatively. Because the locking device 30, the ball valve 10 and the cone 20 do not move relatively, so that the ball valve 10 and the cone 20 are not easily connected and loosened by external force without being separated, and the refrigerant is protected from being leaked.

Alternatively, the number of the first protrusions 101 may be one or more, and the number of the first grooves 301 is the same as the number of the first protrusions 101, and corresponds to one.

Alternatively, the number of the second protrusions 201 may be one or more, and the number of the second grooves 302 is the same as the number of the second protrusions 201, and corresponds to one.

In one embodiment, the locking device 30 is provided with a first protrusion, and the ball valve 10 is provided with a first groove, wherein the first groove is provided on the outer surface of the ball valve 10, and the first protrusion is provided on the inner surface of the locking device 30, and the locking device 30 is connected with the ball valve 10 when the first protrusion is positioned in the first groove.

In another embodiment, the locking device 30 is provided with a first recess 301, the ball valve 10 is provided with a first protrusion 101, and the locking device 30 is coupled to the ball valve 10 when the first protrusion 101 is located in the first recess 301. Wherein the first protrusion 101 is provided on the outer surface of the ball valve 10, and the first recess 301 is provided on the inner surface of the locking device 30.

In one embodiment, the locking device 30 is provided with a second protrusion and the awl 20 is provided with a second recess, and the locking device 30 is coupled to the awl 20 when the second protrusion is positioned in the second recess, wherein the second protrusion is provided on the inner surface of the locking device 30 and the second recess is provided on the outer surface of the awl 20.

In another embodiment, the locking device 30 is provided with a second recess 302, the awl 20 is provided with a second protrusion 201, and the locking device 30 is coupled to the awl 20 when the second protrusion 201 is positioned in the second recess 302, wherein the second recess 302 is provided on the inner surface of the locking device 30 and the second protrusion 201 is provided on the outer surface of the awl 20.

Optionally, when the number of the first protrusions 101 is multiple, the number of the first protrusions 101 is the same as that of the second protrusions 201, and the first protrusions 101 and the second protrusions 201 correspond to each other one by one.

The locking device 30 comprises a nut 303, wherein the nut 303 comprises a first end portion 3031 and a second end portion 3032, wherein the first end portion 3031 is sleeved on the outer side of the ball valve 10; the second end portion 3032 is sleeved on the outer side of the cone tooth 20; wherein the first protrusion 101 is provided on one of an outer wall surface of the ball valve 10 and an inner wall surface of the first end portion 3031, and the first recess 301 is provided on the other of the outer wall surface of the ball valve 10 and the inner wall surface of the first end portion 3031; the second protrusion 201 is provided on one of the outer wall surface of the awl 20 and the inner wall surface of the second end portion 3032, and the second recess 302 is provided on the other of the outer wall surface of the awl 20 and the inner wall surface of the second end portion 3032.

The first end portion 3031 is sleeved on the outer side of the ball valve 10, so that the nut 303 and the ball valve 10 cannot move relatively, the connection between the first end portion 3031 and the ball valve 10 is more stable, similarly, the second end portion 3032 is sleeved on the outer side of the tapered teeth 20, the nut 303 and the tapered teeth 20 cannot move relatively, the connection between the second end portion 3032 and the tapered teeth 20 is also more stable, the first end portion 3031 and the second end portion 3032 are sleeved on the ball valve 10 and the tapered teeth 20 simultaneously, the nut 303 is sleeved on the outer sides of the ball valve 10 and the tapered teeth 20, the nut 303 makes the ball valve 10 and the tapered teeth 20 not move relatively, meanwhile, the connection between the nut 303 and the ball valve 10 and the tapered teeth 20 is more stable, and the nut 303 cannot easily fall off from the ball valve 10 or the tapered teeth 20.

In one embodiment, as shown in fig. 3, the first protrusion 101 is disposed on an outer wall surface of the ball valve 10, the first recess 301 is disposed on an inner wall surface of the first end portion 3031, and when the first protrusion 101 is disposed in the first recess 301, the outer wall surface of the ball valve 10 abuts against the inner wall surface of the first end portion 3031 of the nut 303, so that the ball valve 10 and the nut 303 cannot move relative to each other.

In another embodiment, the first recess is disposed on an outer wall surface of the ball valve 10, the first protrusion is disposed on an inner wall surface of the first end portion 3031, and when the first protrusion is located in the first recess 301, the outer wall surface of the ball valve 10 abuts against the inner wall surface of the first end portion 3031 of the nut 303, so that the ball valve 10 and the nut 303 cannot move relative to each other.

In one embodiment, as shown in fig. 7, the second protrusion 201 is disposed on an outer wall surface of the awl 20, the second groove 302 is disposed on an inner wall surface of the second end portion 3032, and when the second protrusion 201 is disposed in the second groove 302, the outer wall surface of the awl 20 abuts against the inner wall surface of the second end portion 3032 of the nut 303, so that the awl 20 and the nut 303 cannot move relative to each other.

In another embodiment, the second recess is disposed on the outer wall surface of the awl tooth 20, the second protrusion is disposed on the inner wall surface of the second end portion 3032, and when the second protrusion is located in the second recess, the outer wall surface of the awl tooth 20 abuts against the inner wall surface of the second end portion 3032 of the nut 303, so that the awl tooth 20 and the nut 303 cannot move relative to each other.

The inner wall surface of the cross section of the first end portion 3031 is a polygon, and the outer wall surface of the cross section of the ball valve 10 is a polygon matched with the inner wall surface of the cross section of the first end portion 3031; the inner wall surface of the cross section of the second end portion 3032 is a polygon, and the outer wall surface of the cross section of the cone tooth 20 is a polygon matched with the inner wall surface of the cross section of the second end portion 3032.

The inner wall surface of the nut 303 is polygonal, and the outer wall surfaces of the ball valve 10 and the conical teeth 20 are polygonal, so that the processing technology of the ball valve 10 and the conical teeth 20 is simple, the implementation is easy, the space is saved, and the nut 303 is simple in structure and easy to implement.

For example, when the outer wall surface of the ball valve 10 is pentagonal, the inner wall surface of the cross section of the first end portion 3031 is also pentagonal, and similarly, when the outer wall surface of the tap 20 is hexagonal, the inner wall surface of the cross section of the second end portion 3032 is also hexagonal.

Alternatively, as shown in fig. 3, the outer wall surface of the ball valve 10 may be a regular hexagon, and the inner surface of the cross-section of the first end portion 3031 may also be a regular hexagon.

Alternatively, as shown in fig. 7, the outer wall surface of the awl tooth 20 can be a regular hexagon, and the inner wall surface of the cross section of the second end portion 3032 can also be a regular hexagon.

Alternatively, as shown in fig. 1 to 7, the outer wall surfaces of the ball valve 10 and the conical teeth 20 are regular hexagons, and the nut 303 is a six-sided nut 303.

Alternatively, the outer wall surface of the ball valve 10 or the outer wall surface of the cone 20 may be triangular, rectangular, pentagonal, etc.

Alternatively, the number of sides of the polygon formed on the outer wall surface of the ball valve 10 and the number of sides of the polygon formed on the outer wall surface of the cone 20 may be the same or different.

As shown in fig. 3, the ball valve 10 includes a connection section 102 and a fitting section 103, the connection section 102 being used for connecting with the tap 20; the fitting section 103 is disposed on a side of the connecting section 102 away from the tapered teeth 20, and the nut 303 can be sleeved on an outer side of the fitting section 103 and can move toward a direction close to the tapered teeth 20, wherein, as shown in fig. 3 and 6, an axial dimension of the fitting section 103 along the nut 303 is greater than a thickness of the nut 303.

The connecting section 102 enables the ball valve 10 to be connected with the conical teeth 20, the axial dimension of the assembling section 103 along the nut 303 is larger than the thickness of the nut 303, so that the nut 303 can be far away from the conical teeth 20 before the ball valve 10 is assembled with the conical teeth 20, the connection between the ball valve 10 and the conical teeth 20 is not interfered, and after the ball valve 10 is assembled with the conical teeth 20, the nut 303 can move towards the direction close to the conical teeth 20, so that the nut 303 can be sleeved on the outer sides of the ball valve 10 and the conical teeth 20 at the same time.

As shown in fig. 1 to 7, before the ball valve 10 is assembled with the conical teeth 20, the nut 303 is sleeved on the outer side of the ball valve 10, the nut 303 moves from the connecting section 102 to the assembling section 103, so that the connecting section 102 is completely exposed, then the conical teeth 20 are contacted with the connecting section 102 of the ball valve 10, so that the ball valve 10 is installed on the conical teeth 20, after the ball valve 10 and the conical teeth 20 reach a specified torque, the nut 303 is moved downwards, so that the nut 303 is sleeved on the outer sides of the ball valve 10 and the conical teeth 20 at the same time, the nut 303 fixes the ball valve 10 and the conical teeth 20, and the ball valve 10 and the conical teeth 20 cannot move relatively and cannot be connected loosely.

Optionally, the cone 20 includes a connection fitting section, the connection fitting section is adapted to the connection section 102, and when the connection section 102 is adapted to the connection fitting section, the ball valve 10 is connected to the cone 20.

In a specific embodiment, one of the connection section 102 and the connection mating section is provided with a first external thread and the other is provided with a first internal thread, and the first external thread is matched with the first internal thread.

In another specific embodiment, one of the connecting section 102 and the connecting mating section is provided with a first buckle, and the other is provided with a first clamping groove, and the first buckle is matched with the first clamping groove.

Optionally, as shown in fig. 7, the awl teeth 20 further include a fitting engagement segment 202, the fitting engagement segment 202 being adapted to fit the second end portion 3032 of the nut 303.

Alternatively, the outer wall surface of the fitting section 202 may have the same size as the outer wall surface of the fitting section 103, so that the nut 303 is moved from the fitting section 103 to the fitting section 202 to fit over both the outer side of the ball valve 10 and the outer side of the tap 20.

Wherein the thickness of the nut 303 is greater than the axial dimension of the fitting segment 202 along the nut 303.

For example, as shown in fig. 3, 6, and 7, when the length of the fitting engagement section 202 in the circumferential direction of the nut 303 is a, the length of the nut 303 may be 2a, and the axial dimension of the fitting section 103 in the nut 303 may be 2a +5 mm.

In one embodiment, as shown in fig. 1-6, nut 303 is a one-piece structure.

When the nut 303 is of an integrated structure, the strength of the nut 303 is high, the service life of the nut 303 is prolonged, and the replacement frequency of the nut 303 is reduced.

In another specific embodiment, as shown in fig. 8 and 9, the nut 303 is a split structure, and the nut 303 includes a first nut segment 3033 and a second nut segment 3034 sequentially arranged along the circumference of the nut 303, and the first nut segment 3033 and the second nut segment 3034 can be separated or spliced.

The nut 303 is divided into a first nut segment 3033 and a second nut segment 3034, and is arranged along the circumferential direction of the nut 303, so that after the ball valve 10 and the conical teeth 20 are assembled, the nut 303 is sleeved on the outer side of the ball valve 10 and the outer side of the conical teeth 20, and the nut 303 is sleeved more conveniently and easily. Meanwhile, aiming at the assembled ball valve 10 and the cone teeth 20, the nut 303 can be added at the later stage to lock the ball valve 10 and the cone teeth 20, so that the connection stability of the ball valve 10 and the cone teeth 20 is improved, and the ball valve 10 or the cone teeth 20 are prevented from moving relatively under the action of external force, so that the ball valve 10 and the cone teeth 20 are loosened.

In a specific embodiment, as shown in fig. 8 and 9, the first nut segment 3033 and the second nut segment 3034 are connected by bolts, for example, one of the first nut segment 3033 and the second nut segment 3034 is provided with a first screw hole 3035, the other is provided with a second screw hole, the first screw hole 3035 corresponds to the second screw hole, and the bolts penetrate through the first screw hole 3035 and the second screw hole to splice the first nut segment 3033 and the second nut segment 3034, which can be understood as follows: the nut 303 may also include a plurality of nut segments, such as three nut segments, four nut segments, and the plurality of nut segments may be separated or combined with each other.

Optionally, the number of the first screw holes 3035 is one or more, and the number of the second screw holes is the same as that of the first screw holes 3035, and corresponds to one another.

In another specific embodiment, the first nut segment 3033 and the second nut segment 3034 may also be spliced together by a snap, for example, one of the first nut segment 3033 and the second nut segment 3034 is provided with a second snap, and the other is provided with a second clamping slot, and the second snap is adapted to the second clamping slot.

Example two:

in contrast to the first embodiment, as shown in fig. 10 to 15, the ball valve 10 is screwed with the thread 20, and the unscrewing direction is the first direction; the locking device 30 comprises a nut 304, the nut 304 is in threaded connection with one of the ball valve 10 and the cone 20, and the unscrewing direction is a second direction opposite to the first direction; as shown in fig. 9, the locking device 30 further includes a coupling member 305, and the nut 304 is coupled to the other of the ball valve 10 and the tap 20 through the coupling member 305 in a state where the ball valve 10 is fitted on the tap 20, to restrict the nut 304 from rotating with respect to the other of the ball valve 10 and the tap 20.

The nut 304 is threadedly coupled to one of the ball valve 10 and the tap 20, and the unscrewing direction is opposite to the unscrewing direction of the ball valve 10 and the tap 20, so that when the ball valve 10 or the tap 20 is subjected to a force moving in the unscrewing direction, the nut 304 and the nut 304 move in the screwing direction of the one of the ball valve 10 and the tap 20, so that the nut 304 and the one of the ball valve 10 and the tap 20 are relatively fixed and cannot move relatively, and the connecting member 305 connects the nut 304 and the other of the ball valve 10 and the tap 20, and the connecting member 305 limits the mutual movement of the nut 304 and the other of the ball valve 10 and the tap 20, so that the nut 304 and the other of the ball valve 10 and the tap 20 are relatively fixed and cannot move relatively, so that the ball valve 10 and the tap 20 can be relatively fixed and cannot move relatively.

Alternatively, the connector 305 may be a pin, a connecting rod, a bolt, or the like.

For example, as shown in fig. 10 to 15, when the connecting member 305 is a pin, the nut 304 is screwed with the ball valve 10, the nut 304 is provided with a through hole 3041, the tap 20 is provided with a groove 203, and the pin can penetrate the through hole 3041 of the nut 304 and then be caught in the groove 203, thereby connecting the nut 304 with the tap 20.

In a specific embodiment, the ball valve 10 is threadedly coupled to the tapping head 20, wherein the ball valve 10 is provided with a second external thread, the tapping head 20 is provided with a second internal thread adapted to the second external thread, and the nut 304 is threadedly coupled to the tapping head 20.

In a specific embodiment, the ball valve 10 is provided with a third external thread, the nut 304 is provided with a third internal thread, and the third external thread is matched with the third internal thread, wherein the thread direction of the second external thread is opposite to the thread direction of the third external thread, in the case that the ball valve 10 is assembled on the tap 20, the third external thread is matched with the third internal thread, the ball valve 10 is fixed relative to the nut 304, when the ball valve 10 or the tap 20 is subjected to a force moving in the first direction, the ball valve 10 and the nut 304 cannot move in the unscrewing direction, at the same time, the nut 304 and the tap 20 are provided with a connection matching device, the connection connects the nut 304 and the tap 20 and limits the relative movement of the nut 304 and the tap 20, so that the nut 304 and the tap 20 are fixed relative to each other, the nut 304 and the tap 20 cannot move relative to each other, and thus, due to the matching of the nut 304 and the connection piece 305, the ball valve 10 and the conical teeth 20 are fixed in position, relative movement cannot occur, and connection looseness cannot occur.

Optionally, a third external thread is provided on the side of the second external thread remote from the tapping 20.

Optionally, the minor diameter of the third external thread is sized larger than the major diameter of the second external thread so that the third internal thread does not interfere with the second external thread as the nut 304 is moved toward the tapping 20.

In another specific embodiment, the tap 20 is provided with a fourth external thread, the nut 304 is provided with a fourth internal thread, the fourth external thread is matched with the fourth internal thread, wherein the thread direction of the second external thread is opposite to the thread direction of the fourth external thread, in the case that the tap 20 is assembled on the tap 20, the third external thread is matched with the third internal thread, the tap 20 is fixed relative to the nut 304, when the ball valve 10 or the tap 20 is subjected to a force moving in the first direction, the tap 20 and the nut 304 cannot move in the unscrewing direction, meanwhile, the nut 304 and the ball valve 10 are provided with a connection matching device which connects the nut 304 and the ball valve 10 and limits the relative movement of the nut 304 and the ball valve 10, so that the nut 304 and the ball valve 10 are fixed relative to each other, and the nut 304 and the ball valve 10 cannot move relative to each other, so that, due to the matching of the nut 304 and the connecting piece 305, the ball valve 10 and the conical teeth 20 are fixed in position, relative movement cannot occur, and connection looseness cannot occur.

Optionally, the minor diameter of the fourth external thread is sized larger than the major diameter of the second external thread so that the fourth internal thread does not interfere with the second external thread as the nut 304 is moved toward the tapping 20.

The connecting member 305 is detachably or movably connected to the nut 304 and the connecting member 305 is detachably or movably connected to the other one of the ball valve 10 and the tap 20, so that when the ball valve 10 is assembled with the tap 20, the connecting member 305 can be away from a position where the ball valve 10 is connected to the tap 20 so as not to interfere with the assembly of the ball valve 10 to the tap 20, and when the assembly of the ball valve 10 to the tap 20 is completed, the connecting member 305 can connect the nut 304 to the other one of the ball valve 10 and the tap 20.

Alternatively, when the connecting member 305 is detachably connected to the nut 304, the connecting member 305 and the nut 304 may be connected by a pin, a snap, or the like.

Alternatively, when the connecting member 305 is movably connected to the nut 304, the connecting member 305 and the nut 304 may be slidably connected or rotatably connected.

Alternatively, when the connection member 305 is detachably connected to the other one of the ball valve 10 and the tap 20, the connection member 305 and the other one of the ball valve 10 and the tap 20 may be connected by a pin, a snap, or the like.

Alternatively, when the connecting member 305 is movably connected to the other of the ball valve 10 and the tap 20, the connecting member 305 may be slidably or rotatably connected to the other of the ball valve 10 and the tap 20.

In one embodiment, the coupling member 305 is removably coupled to the tapping head 20 when the nut 304 is coupled to the ball valve 10 and the coupling member 305 is removably coupled to the nut 304.

In another embodiment, the coupling member 305 is movably coupled to the tapping head 20 when the nut 304 is coupled to the ball valve 10 and the coupling member 305 is removably coupled to the nut 304.

In yet another embodiment, the coupling member 305 is removably coupled to the tapping head 20 when the nut 304 is coupled to the ball valve 10 and the coupling member 305 is removably coupled to the nut 304.

In one embodiment, the coupling member 305 is removably or movably coupled to the ball valve 10 when the nut 304 is coupled to the tap 20 and the coupling member 305 is removably coupled to the nut 304.

In yet another embodiment, the coupling member 305 is removably or movably coupled to the ball valve 10 when the nut 304 is coupled to the tap 20 and the coupling member 305 is movably coupled to the nut 304.

As shown in fig. 9 to 12, before the ball valve 10 is assembled with the cone 20, the nut 304 is sleeved on the outer side of the ball valve 10, and moves to the third external thread along the second external thread to completely expose the second external thread, then the ball valve 10 is connected with the cone 20 through the second external thread and the second internal thread, then the nut 304 is moved downward, the nut 304 contacts with the third external thread, the third external thread is matched with the third internal thread to lock the nut 304 with the ball valve 10, then a connecting member 305, such as a pin, is inserted into the through hole 3041 of the nut 304 and the groove of the cone 20, the nut 304 is fixedly connected with the cone 20 through the pin, so that the nut 304 cannot rotate relative to the cone 20, so that the nut 304 and the pin fix the ball valve 10 and the cone 20, and the ball valve 10 cannot move relative to the cone 20, and the connection cannot be loosened.

The locking device 30 can be detachably connected with the ball valve 10 and the conical teeth 20, so that the locking device 30 can be conveniently replaced and maintained, and the space occupied by the ball valve 10 and the conical teeth 20 when the ball valve 10 is separated from the conical teeth 20 can be saved.

Alternatively, the locking device 30 may be snap-fit, bolted, etc. with the ball valve 10 and the tap 20.

It is understood that the locking device 30 may be removably connected to one of the ball valve 10 and the tap 20 and movably connected to the other.

The disclosed embodiment also provides a shell-and-tube heat exchanger, as shown in fig. 16, including a safety valve 40 and a ball valve assembly as in any one of the above embodiments, wherein the safety valve 40 is connected with the ball valve 10.

The shell and tube heat exchanger provided by the embodiment of the present disclosure includes the ball valve assembly in any one of the above embodiments, so that the shell and tube heat exchanger has all the advantages of the ball valve 10 assembly in any one of the above embodiments, and details are not repeated herein.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A ball valve assembly, comprising:

a ball valve (10);

the conical teeth (20) are detachably connected with the ball valve (10);

a locking device (30), wherein under the condition that the ball valve (10) is assembled on the cone teeth (20), the locking device (30) locks the ball valve (10) and the cone teeth (20) so as to limit the movement of the ball valve (10) relative to the cone teeth (20).

2. The ball valve assembly of claim 1,

one of the locking device (30) and the ball valve (10) is provided with a first protrusion (101), and the other one of the locking device and the ball valve is provided with a first groove (301) matched with the first protrusion (101); one of the locking device (30) and the awl tooth (20) is provided with a second protrusion (201), and the other one is provided with a second groove (302) matched with the second protrusion (201);

in the condition that the ball valve (10) is assembled on the cone (20), the first protrusion (101) is positioned in the first groove (301), and the second protrusion (201) is positioned in the second groove (302).

3. The ball valve assembly according to claim 2, wherein the locking device (30) comprises a nut (303), the nut (303) comprising:

the first end part (3031) is sleeved on the outer side of the ball valve (10);

the second end part (3032) is sleeved on the outer side of the conical tooth (20);

wherein the first protrusion (101) is provided on one of an outer wall surface of the ball valve (10) and an inner wall surface of the first end portion (3031), and the first recess (301) is provided on the other of the outer wall surface of the ball valve (10) and the inner wall surface of the first end portion (3031); the second protrusion (201) is arranged on one of the outer wall surface of the conical tooth (20) and the inner wall surface of the second end part (3032), and the second groove (302) is arranged on the other one of the outer wall surface of the conical tooth (20) and the inner wall surface of the second end part (3032).

4. The ball valve assembly of claim 3,

the inner wall surface of the cross section of the first end part (3031) is polygonal, and the outer wall surface of the cross section of the ball valve (10) is polygonal matched with the inner wall surface of the cross section of the first end part (3031); the inner wall surface of the cross section of the second end part (3032) is polygonal, and the outer wall surface of the cross section of the cone tooth (20) is polygonal matched with the inner wall surface of the cross section of the second end part (3032).

5. A ball valve assembly according to claim 3, wherein the ball valve (10) comprises:

a connecting section (102) for connecting to the awl teeth (20);

the assembling section (103) is arranged on one side, deviating from the conical teeth (20), of the connecting section (102), the nut (303) can be sleeved on the outer side of the assembling section (103) and can move towards the direction close to the conical teeth (20), and the assembling section (103) is larger than the thickness of the nut (303) along the axial dimension of the nut (303).

6. The ball valve assembly of claim 2,

the nut (303) is of an integrated structure; or the nut (303) comprises a first nut section (3033) and a second nut section (3034) which are sequentially arranged along the circumferential direction of the nut (303), and the first nut section (3033) and the second nut section (3034) can be separated or spliced.

7. The ball valve assembly of claim 1,

the ball valve (10) is in threaded connection with the conical teeth (20), and the unscrewing direction is the first direction;

the locking device (30) comprises a nut (304), the nut (304) is in threaded connection with one of the ball valve (10) and the cone teeth (20), and the unscrewing direction is a second direction opposite to the first direction;

the locking device (30) further comprises a connecting piece (305), and the nut (304) is connected with the other one of the ball valve (10) and the conical teeth (20) through the connecting piece (305) under the condition that the ball valve (10) is assembled on the conical teeth (20) so as to limit the rotation of the nut (304) relative to the other one of the ball valve (10) and the conical teeth (20).

8. The ball valve assembly of claim 7,

the connecting piece (305) is detachably or movably connected with the nut (304), and the other one of the ball valve (10) and the cone (20) is detachably or movably connected with the connecting piece (305).

9. The ball valve assembly according to any one of claims 1 to 8,

the locking device (30) is detachably connected with the ball valve (10) and the cone teeth (20).

10. A shell and tube heat exchanger, comprising:

a safety valve (40);

a ball valve assembly according to any one of claims 1 to 9, said safety valve (40) being connected to the ball valve (10).

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