CN220185962U - Drain valve - Google Patents

Abstract

The present utility model provides a drain valve, comprising: the valve body is provided with a first opening and a circulation channel which are communicated with each other, the circulation channel is used for fluid circulation, the first opening is arranged at the side part of the circulation channel, the first opening comprises a mounting section and a plugging section which are communicated in sequence, the mounting section is positioned at one side of the plugging section, which is close to the circulation channel, and the diameter of the mounting section is smaller than that of the plugging section; the valve core component is arranged in the valve body, the first end of the valve core component is arranged corresponding to the first opening, the valve core component can move relative to the valve body, and the first end of the valve core component can block or open the blocking section; the first spring is sleeved on the valve core component and used for providing a blocking or opening acting force of the blocking section for the valve core component, the first end of the first spring is connected with the valve core component, and the second end of the first spring is located in the installation section.

Description

Drain valve

Technical Field

The utility model relates to the technical field of valves, in particular to a drain valve.

Background

The drain valve is typically disposed between the two conduits. The drain valve generally comprises a valve body, a valve core part and a driving spring, wherein an opening and a flow channel which are communicated with each other are arranged on the valve body, the end part of the valve core part is correspondingly arranged with the opening, the valve core part can move relative to the valve body, the end part of the valve core part can control the flow of the opening, the driving spring is positioned in the valve body, and the driving spring is in driving connection with the valve core part so as to drive the valve core part to move. In the prior art, an assembly groove is usually arranged on a valve body of the drain valve, the assembly groove is positioned on one side of an opening, which is close to a flow channel, and the assembly groove and the opening are coaxially arranged, the diameter of the assembly groove is larger than that of the opening, and one end of a driving spring is embedded in the assembly groove and is abutted to the valve body.

However, when the diameter of the opening of the drain valve is larger, the diameter of the assembly groove and the radial dimension of the driving spring need to be correspondingly increased, so that the size of the valve body and the dimension of the driving spring are increased, and the cost of the drain valve is increased.

Disclosure of Invention

The utility model provides a drain valve, which aims to solve the problem of high cost of the drain valve caused by overlarge diameter of an assembly groove, overlarge diameter of a driving spring and overlarge size of a drain valve when the diameter of an opening is larger in the prior art.

The present utility model provides a drain valve, comprising: the valve body is provided with a first opening and a circulation channel which are communicated with each other, the circulation channel is used for fluid circulation, the first opening is arranged at the side part of the circulation channel, the first opening comprises a mounting section and a plugging section which are communicated in sequence, the mounting section is positioned at one side of the plugging section, which is close to the circulation channel, and the diameter of the mounting section is smaller than that of the plugging section; the valve core component is arranged in the valve body, the first end of the valve core component is arranged corresponding to the first opening, the valve core component can move relative to the valve body, and the first end of the valve core component can block or open the blocking section; the first spring is sleeved on the valve core component and used for providing a blocking or opening acting force of the blocking section for the valve core component, the first end of the first spring is connected with the valve core component, and the second end of the first spring is located in the installation section.

Further, the drain valve further includes: the limiting part is arranged in the first opening and positioned between the plugging section and the mounting section, and the end face of the second end of the first spring is in butt fit with one side, far away from the plugging section, of the limiting part.

Further, the limit part is provided with a plurality of, and a plurality of limit parts are arranged on the lateral wall of the first opening along the circumference interval of the first opening.

Further, the limiting part is annularly arranged on the side wall of the first opening along the circumferential direction of the first opening, and a flow channel for fluid circulation is formed between the inner side wall of the limiting part and the side wall of the valve core component.

Further, the valve core component comprises a limiting structure, and the limiting structure is used for being matched with the limiting part in a stopping mode to limit the moving stroke of the valve core component.

Further, the first spring includes first direction section and the second direction section that sets up in order along the direction of installation section to shutoff section, and the diameter of second direction section is greater than the diameter of first direction section, and the second direction section is located the installation section and the lateral wall of second direction section and installation section direction cooperation, first direction section and case part clearance fit.

Further, the drain valve further includes: the second spring is sleeved on the valve core component, the first end of the second spring is connected with the valve body, the second end of the second spring is connected with the valve core component, the second spring and the first spring provide acting forces with opposite directions for the valve core component, the second spring and the first spring are matched to drive the valve core component to move, and one of the second spring and the first spring is a memory alloy spring.

Further, a second opening is further formed in the valve body, the second opening is formed in the side portion of the circulation channel, the second opening is opposite to the first opening, the second end of the valve core component corresponds to the second opening, and the second end of the valve core component can be used for blocking or opening the second opening.

Further, the valve body is further provided with a mounting groove, the mounting groove is arranged between the circulation channel and the second opening, the diameter of the mounting groove is larger than that of the second opening, the first end of the second spring is located in the mounting groove, and the outer side wall of the first end of the second spring is matched with the mounting groove in a guiding manner.

Further, the valve core part comprises a valve rod and a valve core body which are sequentially arranged along the direction from the mounting section to the plugging section, the cross-sectional area of the valve core body is larger than that of the valve rod, the valve rod is sleeved with a first spring, one end of the valve rod is arranged in the mounting section in a penetrating manner, and the valve core body is used for plugging or opening the plugging section.

By applying the technical scheme of the utility model, the diameter of the mounting section is smaller than that of the blocking section, the first end of the valve core part blocks or opens the blocking section, the mounting section is used for accommodating the end part of the first spring, and the diameter of the mounting section is smaller than that of the blocking section. Specifically, when the drain valve is in use, it needs to be fitted between the two pipes, and when the valve element member opens the first opening, the fluid in the flow passage flows to the blocking section through the mounting section and is discharged out of the drain valve. In the traditional technical scheme, be provided with the opening on the valve body and be used for holding the assembly groove of spring tip, the case part is used for shutoff or opens the opening, assembly groove and opening ladder intercommunication, and the diameter of assembly groove is greater than the diameter of opening. When the size of the opening is large, the size of the fitting groove needs to be increased correspondingly to form a stepped surface with the opening, and the end of the spring is in abutting engagement with the stepped surface. However, the above arrangement increases the size of the valve body and the size of the spring, resulting in an increase in the cost of the drain valve. Compared with the traditional technical scheme, in this scheme, set up the form of the installation section and the shutoff section of mutual intercommunication with first opening, the case part shutoff or open the shutoff section, the installation section is used for holding the tip of first spring, the diameter of installation section is less than the diameter of shutoff section, so set up, can do little with the diameter size of installation section for the tip of first spring inlays and establishes in the installation section can, the setting of this scheme promptly, make the diameter of first spring not receive the size restriction of shutoff section, can realize when the diameter of shutoff section is great, miniaturized with the radial dimension of first spring, the size of valve body has been reduced, the cost of drain valve has been reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 is a schematic structural view of a drain valve in which a valve element member provided in an embodiment of the present utility model is in a first limit position;

FIG. 2 shows a cross-sectional view of the drain valve with the valve core assembly provided by the embodiment of the present utility model in a first limit position;

fig. 3 is a schematic structural view of a drain valve when a valve element member provided in an embodiment of the present utility model is in a second limit position;

FIG. 4 shows a cross-sectional view of the drain valve with the valve core assembly provided by the embodiment of the present utility model in a second limit position;

FIG. 5 shows a schematic structural diagram of one of the spool components provided by the embodiments of the present utility model;

FIG. 6 shows a schematic structural diagram of another valve core component provided by an embodiment of the present utility model;

fig. 7 shows a schematic structural view of the valve core component of fig. 5 mated with a first spring and a second spring.

Wherein the above figures include the following reference numerals:

10. a valve body;

11. a body portion; 1101. a mounting port;

12. a valve seat;

101. a first opening; 1011. a mounting section; 1012. plugging the section; 1013. a limit part;

102. a flow channel;

103. a second opening;

104. a mounting groove;

20. a valve core component; 201. a limit structure;

21. a valve stem; 211. a main body section; 212. a connection section;

22. a valve core body; 23. a stop portion;

30. a first spring; 31. a first guide section; 32. a second guide section;

40. a second spring; 41. a third guide section; 42. and a fourth guide section.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, 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 utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 4, an embodiment of the present utility model provides a drain valve including a valve body 10, a valve core part 20, and a first spring 30. The valve body 10 is provided with a first opening 101 and a circulation channel 102 which are communicated with each other, the circulation channel 102 is used for fluid circulation, the first opening 101 is arranged at the side part of the circulation channel 102, the first opening 101 comprises a mounting section 1011 and a blocking section 1012 which are communicated sequentially, the mounting section 1011 is positioned at one side of the blocking section 1012 close to the circulation channel 102, and the diameter of the mounting section 1011 is smaller than that of the blocking section 1012; the valve core component 20 is arranged in the valve body 10, a first end of the valve core component 20 is arranged corresponding to the first opening 101, the valve core component 20 can move relative to the valve body 10, and the first end of the valve core component 20 can block or open the blocking section 1012; the first spring 30 is sleeved on the valve core component 20, the first spring 30 is used for providing a force for plugging or opening the plugging section 1012 to the valve core component 20, the first end of the first spring 30 is connected with the valve core component 20, and the second end of the first spring 30 is located in the mounting section 1011.

By applying the technical scheme of the utility model, the diameter of the mounting section 1011 is smaller than the diameter of the blocking section 1012, the first end of the valve core component 20 blocks or opens the blocking section 1012, the mounting section 1011 is used for accommodating the end part of the first spring 30, and the diameter of the mounting section 1011 is smaller than the diameter of the blocking section 1012, so that the size of the first spring 30 is not limited by the diameter of the blocking section 1012, and only the diameter of the mounting section 1011 is required to be matched, so that the diameter size of the first spring 30 and the size of the valve body 10 are reduced as much as possible, and the cost of the drain valve is reduced. Specifically, when the drain valve is used, it needs to be fitted between two pipes, and when the valve body member 20 opens the first opening 101, the fluid in the flow passage 102 flows to the blocking section 1012 through the mounting section 1011 and is discharged out of the drain valve. In the traditional technical scheme, be provided with the opening on the valve body and be used for holding the assembly groove of spring tip, the case part is used for shutoff or opens the opening, assembly groove and opening ladder intercommunication, and the diameter of assembly groove is greater than the diameter of opening. When the size of the opening is large, the size of the fitting groove needs to be increased correspondingly to form a stepped surface with the opening, and the end of the spring is in abutting engagement with the stepped surface. However, the above arrangement increases the size of the valve body and the size of the spring, resulting in an increase in the cost of the drain valve. Compared with the traditional technical scheme, in the scheme, the first opening 101 is arranged into the form of the mutually communicated mounting section 1011 and the plugging section 1012, the valve core component 20 is used for plugging or opening the plugging section 1012, the mounting section 1011 is used for accommodating the end part of the first spring 30, the diameter of the mounting section 1011 is smaller than that of the plugging section 1012, so that the diameter of the mounting section 1011 can be reduced, the end part of the first spring 30 is embedded in the mounting section 1011, namely, the scheme is adopted, the diameter of the first spring 30 is not limited by the size of the plugging section 1012, the radial size of the first spring 30 is miniaturized when the diameter of the plugging section 1012 is larger, the size of the valve body 10 is reduced, and the cost of the drain valve is reduced.

As shown in fig. 2 and 4, in particular, the drain valve further includes a limiting part 1013, the limiting part 1013 is disposed in the first opening 101 and located between the blocking section 1012 and the mounting section 1011, and an end surface of the second end of the first spring 30 is in abutting engagement with a side of the limiting part 1013 away from the blocking section 1012. In this embodiment, the mounting section 1011, the limiting portion 1013, and the blocking section 1012 are sequentially disposed along the axial direction of the first opening 101, that is, the limiting portion 1013 separates the first opening 101 into the mounting section 1011 and the blocking section 1012 which are communicated with each other at intervals, realizing that the diameter of the blocking section 1012 is larger than the diameter of the mounting section 1011. The end face of the second end of the first spring 30 abuts against one side of the limiting part 1013 away from the blocking section 1012, and thus the stability of the first spring 30 can be ensured.

The specific number of the limiting parts 1013 is not limited in this embodiment, wherein the limiting parts 1013 may be provided in plurality, and when the limiting parts 1013 are provided in plurality, the plurality of limiting parts 1013 are provided on the side wall of the first opening along the circumferential interval of the first opening. A space is provided between the inner side wall of the stopper 1013 and the side wall of the valve body member 20, and a gap for fluid circulation is formed between two adjacent stoppers 1013. By the arrangement, smoothness of fluid circulation can be ensured.

In this embodiment, the limiting part 1013 and the valve body 10 are integrally formed, so that the stability of connection between the limiting part 1013 and the valve body 10 and convenience of processing can be ensured.

In this embodiment, the limiting portion 1013 is disposed on the sidewall of the first opening 101 along the circumferential direction of the first opening 101 in an annular shape, and a flow channel for fluid circulation is formed between the inner sidewall of the limiting portion 1013 and the sidewall of the valve core member 20. So set up, can further guarantee the convenience of processing limit part 1013 and valve body 10 to can guarantee limit part 1013 to the area of contact of first spring 30, guarantee the stability of first spring 30.

Further, the spool member 20 includes a limiting structure 201, and the limiting structure 201 is configured to be in stop fit with the limiting part 1013 to limit the moving stroke of the spool member 20. The setting of the limit structure 201 can avoid the situation that the valve core component 20 is opened or closed excessively, and ensure the precision of opening or closing the valve.

In this embodiment, the valve core component 20 is provided with a step structure, and the step structure is located on a side of the limiting part 1013 away from the mounting section 1011, and the step structure is used for being in abutting fit with a side of the limiting part 1013 away from the mounting section 1011. The arrangement of the ladder structure is simple in structure and convenient to realize.

As shown in fig. 2, 4 and 5, specifically, the spool part 20 includes a valve stem 21 and a spool body 22 sequentially disposed in a direction from the mounting section 1011 to the blocking section 1012, a cross-sectional area of the spool body 22 is larger than that of the valve stem 21, a first spring 30 is sleeved on the valve stem 21, one end of the valve stem 21 is inserted into the mounting section 1011, and the spool body 22 is used for blocking or opening the blocking section 1012. A stepped structure is formed between the spool body 22 and the valve stem 21.

The specific connection mode of the valve core body 22 and the valve rod 21 is not limited in this scheme, wherein the valve core body 22 and the valve rod 21 can be set to an integrated structure or a split structure.

In this embodiment, the valve core body 22 and the valve rod 21 are provided in a split structure, so that the valve core body 22 and the valve rod 21 can be easily processed and assembled with the first spring 30.

In this embodiment, the valve rod 21 includes a main body section 211 and a connecting section 212 connected in a stepped manner along the axial direction, the diameter of the connecting section 212 is smaller than that of the main body section 211, a connecting hole is provided on the valve core body 22, the connecting hole is provided through the valve core body 22 along the axial direction of the valve core body 22, the connecting section 212 is inserted into the connecting hole, and a stepped surface between the connecting section 212 and the main body section 211 is matched with an end surface stop of the valve core body 22.

As shown in fig. 5 and 6, in this embodiment, the valve body 22 and the valve stem 21 may be welded or riveted. When the valve core body 22 and the valve rod 21 are riveted, an avoidance groove is formed in the end face of one end, far away from the main body section 211, of the connecting section 212, and the connecting section 212 at the position corresponding to the avoidance groove is bent outwards and riveted with the end face of the valve core body 22.

As shown in fig. 2, 4 and 7, further, the first spring 30 includes a first guide section 31 and a second guide section 32 sequentially arranged in a direction from the mounting section 1011 to the blocking section 1012, the second guide section 32 has a diameter larger than that of the first guide section 31, the second guide section 32 is located in the mounting section 1011 and an outer side wall of the second guide section 32 is in guide fit with the mounting section 1011, and the first guide section 31 is in clearance fit with the spool member 20. By the arrangement, the stability of the first spring 30 can be further guaranteed, the condition that the first spring 30 is bent or inclined in the expansion process is avoided, the stability and uniformity of acting force applied to the valve core component 20 are guaranteed, and the moving stability of the valve core component 20 is guaranteed. In addition, the first spring 30 is arranged into the tower-shaped structure, and the addition of an additional positioning component can be avoided.

Further, the drain valve further comprises a second spring 40, the second spring 40 is sleeved on the valve core component 20, a first end of the second spring 40 is connected with the valve body 10, a second end of the second spring 40 is connected with the valve core component 20, the second spring 40 and the first spring 30 provide opposite acting forces to the valve core component 20, the second spring 40 and the first spring 30 cooperate to drive the valve core component 20 to move, and one of the second spring 40 and the first spring 30 is a memory alloy spring. The memory alloy spring is simple in structure and can be directly contacted with the fluid in the circulation channel 102, so that the sensitivity of the valve core component 20 is ensured.

In this embodiment, the valve core component 20 further includes a stop portion 23, the stop portion 23 is annularly disposed on a side wall of the valve rod 21 along a circumferential direction of the valve rod 21, the first spring 30 and the second spring 40 are respectively located at two sides of the stop portion 23, one end of the first spring 30 close to the second spring 40 is abutted with one side of the stop portion 23, and one end of the second spring 40 close to the first spring 30 is abutted with the other side of the stop portion 23. By this arrangement, convenience in assembling the first spring 30 and the second spring 40 can be ensured. In this embodiment, the first spring 30 is a memory alloy spring.

The specific positions of the first spring 30 and the second spring 40 are not limited in this embodiment, where the first spring 30 may be set to correspond to the first opening 101, or the second spring 40 may be set to correspond to the first opening 101, and in this embodiment, the first spring 30 is set to correspond to the first opening 101.

In this embodiment, the maximum diameter of the first spring 30 is different from the maximum diameter of the second spring 40, so that the first spring 30 and the second spring 40 can be conveniently distinguished, and the situation that the first spring 30 and the second spring 40 are reversely assembled is avoided.

Further, the valve body 10 is further provided with a second opening 103, the second opening 103 is disposed at a side portion of the flow channel 102, the second opening 103 is disposed opposite to the first opening 101, the second end of the valve core component 20 is disposed corresponding to the second opening 103, and the second end of the valve core component 20 can block or open the second opening 103. Specifically, the valve core component 20 has a first limit position and a second limit position which are oppositely arranged, when the valve core component 20 is in a limit position, the first end of the valve core component 20 seals the sealing section 1012, the second end of the valve core component 20 seals the second opening 103, and the step structure of the valve core component 20 is in abutting fit with one side of the limit part 1013 away from the mounting section 1011 so as to limit the moving stroke of the valve core component 20 and prevent the valve core component 20 from being over-closed; when the spool part 20 is in the second extreme position, the blocking section 1012 is in an open state, and the second opening 103 is in an open state. In the drainage valve of the scheme, when the circulation channel 102 is in a positive pressure state, the first opening 101 and the second opening 103 can be used as drainage ports at the same time so as to ensure the drainage amount and the drainage speed of the drainage valve; when the circulation channel 102 is in a negative pressure state, one of the first opening 101 and the second opening 103 can be used as a water outlet, and the other can be used as an air inlet, so that the communication between the circulation channel 102 and the outside can be ensured, and the water draining effect of the drain valve can be ensured. In the present embodiment, the second opening 103 serves as the drain port, the first opening 101 serves as the intake port, and when the second opening 103 is drained, the first opening 101 is charged with air, and even if the sectional area of the intake runner is smaller than that of the drain runner, the intake speed can be satisfied.

In this embodiment, the cross-sectional area of the second opening 103 is the same as the cross-sectional area of the blocking section 1012, the valve core component 20 includes two valve core bodies 22, the two valve core bodies 22 are symmetrically disposed at the end of the valve rod 21, and the two valve core bodies 22 are both disposed separately from the valve rod 21, or may be disposed as an integral molding of one valve core body 22 and the valve rod 21, and the other valve core body 22 is separate from the valve rod 21. The cross-sectional area of the second opening 103 is the same as that of the blocking section 1012, so that the first opening 101 can be ensured to be in a blocking state, and when the second opening 103 is in the blocking state, the valve core component 20 realizes internal balance, and smoothness in valve opening is ensured.

Further, the valve body 10 is further provided with a mounting groove 104, the mounting groove 104 is arranged between the circulation channel 102 and the second opening 103, the diameter of the mounting groove 104 is larger than that of the second opening 103, the first end of the second spring 40 is located in the mounting groove 104, and the outer side wall of the first end of the second spring 40 is in guiding fit with the mounting groove 104. In this embodiment, the mounting groove 104 communicates with the second opening 103 in a stepped manner, and the mounting groove 104 is provided, which can further secure the stability of the second spring 40.

In this embodiment, the second spring 40 includes a third guide section 41 and a fourth guide section 42 sequentially arranged, the diameter of the third guide section 41 is larger than that of the fourth guide section 42, the diameter of the third guide section 41 is larger than that of the second guide section 32 of the first spring 30, the outer side wall of the third guide section 41 is in guide fit with the mounting groove 104, the fourth guide section 42 is in clearance fit with the valve rod 21, and one end of the fourth guide section 42, which is far away from the third guide section 41, is in stop fit with one side of the stop portion 23, which is far away from the first spring 30. By the arrangement, the stability of the second spring 40 can be further guaranteed, the situation that the second spring 40 bends or inclines in the extending and retracting process is avoided or reduced, the stability and uniformity of acting force applied by the second spring 40 to the valve core component 20 are guaranteed, and the moving stability of the valve core component 20 is guaranteed.

As shown in fig. 1 and 2, further, the valve body 10 includes a body portion 11 and a valve seat 12, wherein the flow passage 102 and the first opening 101 are both provided on the body portion 11, a mounting opening 1101 is further provided on the body portion 11, the mounting opening 1101 is provided on a side portion of the flow passage 102, the mounting opening 1101 is provided opposite to the first opening 101, the second opening 103 and the mounting groove 104 are both provided on the valve seat 12, and the valve seat 12 is provided at the mounting opening 1101 and is screwed with the body portion 11. So set up, can guarantee the convenience of drain valve assembly.

By applying the technical scheme of the utility model, the diameter of the mounting section 1011 is smaller than the diameter of the blocking section 1012, the first end of the valve core component 20 blocks or opens the blocking section 1012, the mounting section 1011 is used for accommodating the end part of the first spring 30, and the diameter of the mounting section 1011 is smaller than the diameter of the blocking section 1012, so that the size of the first spring 30 is not limited by the diameter of the blocking section 1012, and only the diameter of the mounting section 1011 is required to be matched, so that the diameter size of the first spring 30 and the size of the valve body 10 are reduced as much as possible, and the cost of the drain valve is reduced. Providing the spool member 20 in the form of the valve stem 21 and the spool body 22 as separate pieces can facilitate assembling the first spring 30 and the second spring 40 with the spool member 20. The maximum diameter of the first spring 30 is different from the maximum diameter of the second spring 40, so that the first spring 30 and the second spring 40 can be distinguished conveniently, and the situation that the first spring 30 and the second spring 40 are reversely assembled is prevented.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

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 utility model 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 utility model, 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 utility model 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 utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A drain valve, comprising:

the valve comprises a valve body (10), wherein a first opening (101) and a circulation channel (102) which are communicated with each other are arranged on the valve body (10), the circulation channel (102) is used for fluid circulation, the first opening (101) is arranged at the side part of the circulation channel (102), the first opening (101) comprises a mounting section (1011) and a blocking section (1012) which are communicated in sequence, the mounting section (1011) is positioned at one side, close to the circulation channel (102), of the blocking section (1012), and the diameter of the mounting section (1011) is smaller than that of the blocking section (1012);

a valve core component (20) arranged in the valve body (10), wherein a first end of the valve core component (20) is arranged corresponding to the first opening (101), the valve core component (20) can move relative to the valve body (10), and the first end of the valve core component (20) can block or open the blocking section (1012);

the first spring (30) is sleeved on the valve core component (20), the first spring (30) is used for providing a blocking force for the valve core component (20) or a force for opening the blocking section (1012), the first end of the first spring (30) is connected with the valve core component (20), and the second end of the first spring (30) is located in the installation section (1011).

2. The drain valve of claim 1, further comprising:

and a limiting part (1013) arranged in the first opening (101) and positioned between the blocking section (1012) and the mounting section (1011), wherein the end surface of the second end of the first spring (30) is in butt fit with one side of the limiting part (1013) away from the blocking section (1012).

3. The drain valve according to claim 2, wherein the stopper (1013) is provided in plurality, and the stopper (1013) is provided in plurality on a side wall of the first opening (101) at intervals along a circumferential direction of the first opening (101).

4. The drain valve according to claim 2, wherein the stopper (1013) is provided on a side wall of the first opening (101) in a circumferential ring shape of the first opening (101), and a flow passage for fluid communication is formed between an inner side wall of the stopper (1013) and a side wall of the valve body member (20).

5. The drain valve according to claim 2, wherein the spool member (20) includes a limit structure (201), the limit structure (201) for stopper-engaging with the limit part (1013) to limit a moving stroke of the spool member (20).

6. The drain valve according to claim 1, wherein the first spring (30) includes a first guide section (31) and a second guide section (32) disposed in order along a direction from the mounting section (1011) to the blocking section (1012), the second guide section (32) having a diameter larger than that of the first guide section (31), the second guide section (32) being located in the mounting section (1011) and an outer side wall of the second guide section (32) being in guide engagement with the mounting section (1011), the first guide section (31) being in clearance engagement with the valve spool member (20).

7. The drain valve of claim 1, further comprising:

the second spring (40) is sleeved on the valve core component (20), the first end of the second spring (40) is connected with the valve body (10), the second end of the second spring (40) is connected with the valve core component (20), the second spring (40) and the first spring (30) provide opposite acting forces for the valve core component (20), the second spring (40) and the first spring (30) are matched to drive the valve core component (20) to move, and one of the second spring (40) and the first spring (30) is a memory alloy spring.

8. The drain valve according to claim 7, wherein a second opening (103) is further provided on the valve body (10), the second opening (103) is provided on a side portion of the flow channel (102), the second opening (103) is provided opposite to the first opening (101), the second end of the valve element member (20) is provided corresponding to the second opening (103), and the second end of the valve element member (20) can close or open the second opening (103).

9. The drain valve according to claim 8, wherein a mounting groove (104) is further provided on the valve body (10), the mounting groove (104) is provided between the flow channel (102) and the second opening (103), the diameter of the mounting groove (104) is larger than the diameter of the second opening (103), the first end of the second spring (40) is located in the mounting groove (104), and the outer side wall of the first end of the second spring (40) is in guiding fit with the mounting groove (104).

10. The drain valve according to claim 1, wherein the valve body member (20) includes a valve stem (21) and a valve body (22) disposed in order along a direction from the mounting section (1011) to the blocking section (1012), a cross-sectional area of the valve body (22) is larger than that of the valve stem (21), the first spring (30) is sleeved on the valve stem (21), one end of the valve stem (21) is provided in the mounting section (1011) in a penetrating manner, and the valve body (22) is used for blocking or opening the blocking section (1012).