CN220102215U - Valve element component and drain valve - Google Patents

Abstract

The utility model provides a valve core component and a drain valve, wherein the valve core component is movably arranged in the drain valve, the valve core component is used for controlling the flow of an opening of the drain valve, and the valve core component comprises: a valve stem; the valve core is arranged in a split mode with the valve rod, and is used for controlling the flow of an opening of the drain valve. By the technical scheme provided by the utility model, the problem of poor universality of the integrally arranged valve core component in the prior art can be solved.

Description

Valve element component and drain valve

Technical Field

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

Background

The drain valve is disposed between the two pipes for draining the fluid in the pipes. The drain valve comprises a valve body and a valve core component, wherein the valve body is provided with a flow channel and an opening which are mutually communicated, two ends of the flow channel are respectively communicated with two pipelines, the flow channel is used for fluid circulation, the opening is arranged at the side part of the flow channel and is used for discharging fluid in the flow channel, the valve core component is arranged in the valve body, and the valve core component can move relative to the valve body so as to regulate the flow of the opening.

In the prior art, the valve core component of the drain valve generally comprises a valve core and a valve rod which are integrally arranged, different valve core components are required to be configured for drain valves with different specifications, and the valve core component has poor universality.

Disclosure of Invention

The utility model provides a valve element part and a drain valve, which are used for solving the problem of poor universality of the valve element part integrally arranged in the prior art.

According to an aspect of the present utility model, there is provided a valve body part movably provided in a drain valve, the valve body part for controlling a flow rate of an opening of the drain valve, the valve body part comprising: a valve stem; the valve core is arranged in a split mode with the valve rod, and is used for controlling the flow of an opening of the drain valve.

Further, two valve cores are arranged and are respectively arranged at two ends of the valve rod, and at least one valve core is arranged in a split mode with the valve rod.

Further, the valve core comprises a first valve core, the first valve core and the valve rod are arranged in a split mode, a connecting hole is formed in the first valve core, and the end portion of the valve rod penetrates through the connecting hole and is connected with the first valve core.

Further, the spool part includes: the axial limiting structure is arranged between the valve rod and the first valve core and is used for limiting the relative position of the first valve core and the valve rod in the axial direction.

Further, the valve rod comprises a connecting section and a main body section which are arranged in a stepped mode, a stepped surface is formed between the connecting section and the main body section, the first valve core is arranged on the connecting section in a penetrating mode, the end face, close to the other valve core, of the first valve core is in limiting fit with the stepped surface, and the stepped surface is of an axial limiting structure.

Further, the spool part further includes: and the stop part is arranged on the side wall of the valve rod and is used for being in stop fit with the spring component of the drain valve.

Further, an assembly groove is formed in the valve core, the assembly groove is annularly formed in the outer side wall of the valve core along the circumferential direction of the valve core, and the assembly groove is used for assembling the sealing ring.

According to another aspect of the present utility model, there is provided a drain valve comprising: the valve body is provided with a first opening and a circulation channel which are communicated with each other, and the first opening is arranged at the side part of the circulation channel; the valve core component is arranged in the valve body, the valve core component can move relative to the valve body, the valve core of the valve core component is arranged corresponding to the first opening, and the valve core can block or open the first opening.

Further, the drain valve further includes: the memory alloy spring and the return spring are both positioned in the valve body and are respectively in driving connection with the valve rod of the valve core component, and the memory alloy spring and the return spring are used for providing acting forces in opposite directions for the valve rod and are matched with each other to drive the valve rod to move.

Further, the memory alloy spring and the reset spring are sleeved on the valve rod at intervals along the axial direction of the valve rod; the first end of the memory alloy spring is abutted with the valve core component, and the second end of the memory alloy spring is abutted with the valve body; the first end of the return spring is abutted with the valve body, and the second end of the return spring is abutted with the valve core component.

Further, the memory alloy spring comprises a first guide section and a second guide section, the first guide section is in guide fit with the valve rod, and the inner diameter of the first guide section is smaller than the outer diameter of the valve core; the reset spring comprises a fourth guide section which is in guide fit with the valve rod, and the inner diameter of the third guide section is smaller than the outer diameter of the valve core.

By applying the technical scheme of the utility model, at least part of valve cores and valve rods are arranged in a split way, so that the valve cores with different specifications can be conveniently assembled with the valve rods, and the universality of valve core parts is improved. Specifically, the drain valve includes valve body and case part, is provided with the opening on the valve body, has different specification valve bodies and open-ended drain valve, needs to match the case part of different specifications, and when valve rod and case set up separately, can process valve rod and case of different specifications alone, when assembling the drain valve, with the valve rod and the case assembly that mutually support become case part with corresponding valve body assembly can, so set up, promoted the commonality of case part. In the traditional technical scheme, the valve rod and the valve core are of an integrated structure, when the valve body is matched with the valve core component with the specified specification, the valve core component with the corresponding size needs to be designed, namely, the valve core components with different specifications need to be processed to be matched with the valve body with different specifications, and the valve core component has various specifications and poor universality. The valve core component of the scheme is at least partially arranged in a split mode with the valve rod, and when the valve core component of a specific specification is matched with the valve body, only the valve core and the valve rod of the corresponding specification are required to be assembled.

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 shows a schematic structural view of one of the spool parts according to the first embodiment of the present utility model;

FIG. 2 is a schematic structural view of another valve core component according to the first embodiment of the present utility model;

fig. 3 is a schematic structural view of a valve element according to a first embodiment of the present utility model;

FIG. 4 shows a schematic exploded view of the spool piece of FIG. 3;

fig. 5 is a schematic structural view showing a valve element part of a drain valve according to a second embodiment of the present utility model in a first limit position;

fig. 6 is a cross-sectional view showing a valve body member of a drain valve according to a second embodiment of the present utility model in a first limit position;

FIG. 7 is a schematic diagram showing the configuration of a valve core component, a memory alloy spring and a return spring according to a second embodiment of the present utility model;

fig. 8 is a schematic structural view showing a valve element part of a drain valve according to a second embodiment of the present utility model in a second limit position;

fig. 9 is a cross-sectional view showing a valve body member of a drain valve according to a second embodiment of the present utility model in a second limit position;

fig. 10 is a schematic view showing the structure of a valve element part of a drain valve according to a third embodiment of the present utility model in a second limit position;

fig. 11 is a cross-sectional view showing a valve body member of a drain valve according to a third embodiment of the present utility model in a second limit position.

Wherein the above figures include the following reference numerals:

10. a valve stem;

11. a main body section; 12. a connection section;

21. a first valve core; 22. a second valve core;

201. a connection hole; 202. an assembly groove;

30. a stop portion;

40. a valve body; 401. a first opening; 402. a flow channel; 403. a second opening; 404. a first mounting groove; 405. a second mounting groove;

41. a body portion; 4101. a mounting port; 42. a valve seat;

50. a memory alloy spring;

51. a first guide section; 52. a second guide section;

60. a return spring;

61. a third guide section; 62. 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, a first embodiment of the present utility model provides a valve body part movably provided in a drain valve, the valve body part for controlling a flow rate of an opening of the drain valve, the valve body part including a valve stem 10 and a valve body. The valve rod 10 is used for extending into the flow channel of the drain valve in an included angle manner with the flow channel of the drain valve; at least part of the valve core is arranged separately from the valve rod 10, and the valve core is used for controlling the flow of the opening of the drain valve.

By applying the technical scheme of the utility model, at least part of valve cores and the valve rod 10 are arranged in a split way, so that the valve cores with different specifications can be conveniently assembled with the valve rod 10, and the universality of valve core parts is improved. Specifically, the drain valve includes valve body and case part, is provided with the opening on the valve body, has different specification valve bodies and open-ended drain valve, needs to match the case part of different specifications, and valve rod 10 and case when valve rod 10 and case components of a whole that can function independently set up can process the valve rod 10 and the case of different specifications, when assembling the drain valve, with the valve rod 10 and the case assembly that mutually support become the case part and the valve body assembly that corresponds can, so set up, promoted the commonality of case part. In the traditional technical scheme, the valve rod and the valve core are of an integrated structure, when the valve body is matched with the valve core component with the specified specification, the valve core component with the corresponding size needs to be designed, namely, the valve core components with different specifications need to be processed to be matched with the valve body with different specifications, and the valve core component has various specifications and poor universality. The valve core component of the scheme is at least partially arranged in a split mode with the valve rod 10, when the valve core component with a specific specification is required to be matched with the valve body, only the valve core with the corresponding specification and the valve rod 10 are required to be assembled, and the universality of the device is improved.

In this scheme, the valve core is disposed at the end of the valve rod 10, and the diameter of the valve core and the valve rod 10 is not limited in this scheme, wherein the diameter of the valve rod 10 is D1, and the diameter of the valve core is D2, and wherein D2> D1, D2< D1, or d2=d1 may be set.

In this example, D2-D1 is not less than 0.5mm. So set up for when the open-ended cross-sectional area of drain valve is great, only need with the size of case and drain valve's open-ended size assorted can, the diameter of valve rod 10 can suitably reduce, so set up, can reduce the area of contact of valve rod 10 and fluid as far as possible, reduce the valve rod to the circulation resistance of fluid to can reduce the space of the circulation passageway of case part occupation drain valve, reduce the flow resistance to fluid, guarantee the circulation ability of fluid in the circulation passageway. Specifically, when the drain valve actually works, the drain valve is installed between two pipelines, when drainage is not needed, the valve core seals the opening of the drain valve, fluid circulates in the circulation channel, and because the valve rod 10 of the valve core component is positioned in the circulation channel, when the diameter of the valve rod 10 is too large, the valve rod 10 occupies a larger space of the circulation channel, and the circulation of the fluid in the circulation channel is blocked. The diameter of the valve rod 10 is smaller than that of the valve core, so that the space occupied by the valve rod 10 in the circulation channel can be reduced, and the smoothness of fluid flow in the circulation channel is ensured. That is, when the diameter of the valve core is larger than that of the valve rod 10, the valve core component can be suitable for a drain valve with a larger opening, that is, the opening diameter of the drain valve and the diameter of the flow channel are not limited by the size of the valve rod 10, so that the adaptability of the valve core component of the scheme is improved. The diameter of the valve rod 10 is reduced, so that the cost of the valve core component is reduced, the overall weight of the valve core component is reduced, and the smoothness of the moving process of the valve core component is ensured.

In one spool part, the spool may be provided one or two or more. In this embodiment, two valve spools are provided, the two valve spools are respectively disposed at two ends of the valve stem 10, and at least one valve spool is disposed separately from the valve stem 10. The valve core and the valve rod 10 are arranged in a split mode, and the valve core and the valve rod 10 can be conveniently machined. And the valve core and the valve rod 10 are arranged in a split mode, so that the small-diameter valve rod 10 can be conveniently machined, and machining accuracy of the small-diameter valve rod 10 is guaranteed. After the valve core component is assembled into the drain valve, the valve core component needs to be driven by a spring component of the drain valve, and in general, the spring component needs to be sleeved on the valve core component. By this arrangement, the spring member and the valve element member can be assembled easily.

Specifically, the valve core component may be configured such that one valve core is separately configured from the valve stem 10, and the other valve core is integrally formed with the valve stem 10, or may be configured such that both valve cores are separately configured from the valve stem 10. In this embodiment, two valve cores are all separately arranged with the valve rod 10, so that the valve rod 10 with the same specification and model can be matched with valve cores with different specification and models, or the valve cores with the same specification and model can be matched with the valve rod 10 with different specification and model, and the adaptability of the valve core component of this scheme can be further ensured.

In this scheme, the case includes first case 21 and second case 22, and first case 21 and second case 22 all set up with valve rod 10 components of a whole that can function independently. The first spool 21 and the second spool 22 are provided at both end portions of the valve stem 10, respectively. The first valve element 21 and the second valve element 22 may have the same structure or may have different structures.

As shown in fig. 4, in the present embodiment, the first spool 21 and the second spool 22 are identical in shape, and the first spool 21 and the second spool 22 are symmetrically disposed at both end portions of the valve stem 10. Taking the first valve core 21 as an example for illustration, the first valve core 21 is provided with a connecting hole 201, the connecting hole 201 may be provided with a through hole structure or a blind hole structure, in this embodiment, the connecting hole 201 is provided with a through hole structure, the connecting hole 201 is coaxial with the first valve core 21, and an end portion of the valve rod 10 is inserted into the connecting hole 201 and connected with the first valve core 21. By this arrangement, the stability of the connection of the first spool 21 and the second spool 22 to the valve stem 10 can be ensured.

Further, the valve core component includes an axial limit structure disposed between the valve stem 10 and the first valve core 21, and the axial limit structure is used for limiting the relative positions of the first valve core 21 and the valve stem 10 in the axial direction. The arrangement of the axial limiting structure can ensure the position precision between the valve core and the valve rod 10 and the assembly precision of the valve core component.

As shown in fig. 3 and 4, in this embodiment, the valve rod 10 includes a connecting section 12 and a main body section 11 that are arranged in a stepped manner, two connecting sections 12 are provided, two connecting sections 12 are symmetrically provided at two ends of the main body section 11, a first valve core 21 and a second valve core 22 are respectively provided corresponding to the two connecting sections 12, and the diameter of the main body section 11 is D1. Specifically, a stepped surface is formed between the connecting section 12 and the main body section 11, an axial limiting structure is formed on the stepped surface, the first valve core 21 is arranged on one of the connecting sections 12 in a penetrating manner, and the end surface of the first valve core 21, which is close to the second valve core 22, is in limiting fit with the corresponding stepped surface of the connecting section 12; the second valve core 22 is arranged on the other connecting section 12 in a penetrating way, and the end face of one end, close to the first valve core 21, of the second valve core 22 is in limit fit with the corresponding stepped surface of the connecting section 12. The step structure is simple in structure and good in limiting effect.

The valve core and the valve rod 10 may be fixed by welding, or the connecting section 12 may be in interference fit with the valve core, or the valve core and the valve rod 10 may be fixed by riveting. As shown in fig. 2, when the valve core and the valve rod 10 are fixed by riveting, a drilling structure is arranged on the end face of one end of the connecting section 12 far away from the main body section 11, the valve core is sleeved on the connecting section 12, and one end of the connecting section 12 far away from the main body section 11 corresponding to the drilling structure is turned outwards and riveted with the end face of the valve core. In this embodiment, the first valve element 21 and the second valve element 22 are welded to the valve stem 10.

In this embodiment, the valve stem 10 is an integrally formed structure. By this arrangement, the structural strength of the valve rod 10 can be ensured, and the coaxiality of the two connecting sections 12 and the main body section 11 can be ensured.

Further, the valve core part further comprises a stopping portion 30, the stopping portion 30 is arranged on the side wall of the valve rod 10, and the stopping portion 30 is used for being in stopping fit with a spring part of the drain valve. The specific structure and number of the stop portions 30 are not limited in this embodiment, and a plurality of stop portions 30 may be disposed along the circumferential annular space of the valve rod 10. The stop portion 30 and the valve stem 10 may be provided as a separate structure, or the stop portion and the valve stem 10 may be designed as an integral structure.

In the present embodiment, one stopper 30 is provided, and the stopper 30 is provided on the side wall of the valve stem 10 in a ring shape along the circumferential direction of the valve stem 10. In particular, when assembling the spring member of the drain valve, the spring member may be sleeved on the valve stem 10 such that the spring member is located at one side of the stop portion 30 and such that one of end surfaces of the spring member abuts against one side of the stop portion 30. By this arrangement, the contact area between the stopper 30 and the spring member can be ensured, and the stopper effect can be ensured.

In this scheme, stopper portion 30 and valve rod 10 components of a whole that can function independently set up, are provided with annular mounting groove on the lateral wall of valve rod 10, and stopper portion 30 annular sets up in the mounting groove. In addition, the specific structure of the stop portion 30 is not limited in this scheme, and the stop portion 30 may be a gasket, a clip spring or a shaft retainer ring. If the gasket is used, the gasket is required to be welded after being assembled into the mounting groove; if the clamping spring is a clamping spring, the clamping spring is used as a fixed part, the clamping spring is a C-shaped opening part, the section of the clamping spring is circular, and the clamping spring is clamped in the mounting groove; if the check ring is used for the shaft, the check ring is used as a standard component, and the check ring is directly assembled.

As shown in fig. 4, further, the valve core is provided with an assembling groove 202, the assembling groove 202 is annularly arranged on the outer side wall of the valve core along the circumferential direction of the valve core, and the assembling groove 202 is used for assembling a sealing ring. The arrangement of the assembly groove 202 of the scheme is convenient for assembling the sealing ring and the valve core. The number of the assembly grooves on one valve core is not limited, and a plurality of assembly grooves can be arranged at intervals along the axial direction of the valve core. In this embodiment, the first valve element 21 and the second valve element 22 are each provided with an assembly groove 202.

Further, the outer side walls of the two ends of the valve core are provided with chamfer structures. The setting of chamfer structure can make the case shutoff or open the opening of drain valve when, chamfer structure can with the opening direction cooperation of drain valve, promote the stability when opening the valve and closing the valve.

In this embodiment, two tip of case all are provided with chamfer structure, and the case itself is a symmetrical structure, so sets up, can be convenient for assemble case and valve rod 10 for when case and valve rod 10 are assembled, the case just adorns or the reverse dress can, has promoted the assembly efficiency of case and valve rod 10.

According to the valve element component, the valve rod 10 is different from the valve element in diameter, the diameter of the valve element is matched with the opening of the drain valve, the opening of the drain valve and the radial dimension of the circulation channel are not limited by the diameter of the valve rod 10, and after the diameter of the valve rod 10 is reduced, the smoothness of fluid circulation in the circulation channel of the drain valve can be ensured. The valve core and the valve rod 10 are arranged in a split mode, the valve rod 10 with different diameters can be matched with valve cores with different outer diameters, adaptability of the valve core component is improved, and convenience in processing the valve core and the valve rod 10 can be guaranteed.

In the scheme, the processing method of the valve core part comprises the following processing steps:

step 1: a valve stem 10 for processing a valve core member;

step 2: processing a valve core of the valve core component;

step 3: the valve cartridge and valve stem 10 are assembled.

Specifically, step 1 includes: the first cylindrical bar is selected, and the end of the first cylindrical bar is machined so that the first cylindrical bar forms a main body section 11 and a connecting section 12 which are connected with each other, and the diameter of the connecting section 12 is smaller than that of the main body section 11.

Specifically, when selecting first cylindrical rod, select the higher cylindrical rod of machining precision, carry out the processing to the both ends of first cylindrical rod to form two linkage segments 12, and process an annular mounting groove on the lateral wall at the middle part of first cylindrical rod, with installation stopper 30 can, need not to process other excircle parts in the middle of the first cylindrical rod, machining efficiency is high.

Specifically, step 2 includes: step 21: selecting a second cylindrical bar, wherein the length of the second cylindrical bar is greater than that of the valve core, drilling the end surface of the first end of the second cylindrical bar to form a connecting hole 201 for the connecting section 12 to penetrate, and particularly clamping the second end of the second cylindrical bar through a clamping mechanism during drilling operation; step 22: carrying out machining treatment on the outer side wall of the second cylindrical bar to form two chamfer structures which are distributed at intervals along the axial direction, wherein one chamfer structure corresponds to the end face of the first end of the second cylindrical bar, and cutting the second cylindrical bar on one side of the end face of the other chamfer structure, which is far away from the first end of the second cylindrical bar, so as to form a valve core blank; step 23: and deburring the valve core blank to obtain the valve core. The setting can guarantee to cut the cylindrical rod of second when finishing chamfer structure, has guaranteed the machining efficiency to the case blank.

Further, step 22 further includes: the outer side wall of the second cylindrical bar is machined in the circumferential direction of the second cylindrical bar to form an annular fitting groove 202. When carrying out the driving to the lateral wall of the cylindrical rod of second, fixture carries out the centre gripping to the second end of the cylindrical rod of second, so set up, can guarantee the convenience to the processing of assembly groove 202.

As shown in fig. 5 to 8, a second embodiment of the present utility model provides a drain valve including a valve body 40 and a valve core member provided in the first embodiment, wherein a first opening 401 and a flow channel 402 are provided on the valve body 40, the first opening 401 being provided on a side portion of the flow channel 402, the first opening 401 being communicated with each other; the valve core component is arranged in the valve body 40, the valve core component can move relative to the valve body 40, the valve core of the valve core component is arranged corresponding to the first opening 401, and the valve core can block or open the first opening 401.

Further, the valve body 40 is further provided with a second opening 403, the second opening 403 is arranged at the side part of the flow channel 402, the first opening 401 and the second opening 403 are oppositely arranged, the first valve core 21 is arranged corresponding to the first opening 401, the second valve core 22 is arranged corresponding to the second opening 403, the first valve core 21 is used for controlling the flow rate of the first opening 401, and the second valve core 22 is used for controlling the flow rate of the second opening 403; the valve core component is provided with a first limit position and a second limit position which are oppositely arranged, when the valve core is positioned at the first limit position, the first valve core 21 seals the first opening 401, and the second valve core 22 seals the second opening 403; when the spool member is in the second limit position, the first opening 401 is in an open state and the second opening 403 is in an open state. The second opening 403 may be used as an air inlet or a water outlet, when the circulation channel 402 is in a negative pressure state, the second opening 403 is used as an air inlet to balance the air pressure of the circulation channel 402 and the outside, so as to ensure the smoothness of the water drainage of the first opening 401; when the circulation passage 402 is in a positive pressure state, the second opening 403 serves as a drain port to ensure that the second opening 403 and the first opening 401 drain simultaneously, ensuring the amount of water discharged by the drain valve.

As shown in fig. 6 and 7, the drain valve further includes a memory alloy spring 50 and a return spring 60, wherein the memory alloy spring 50 and the return spring 60 are both positioned in the valve body 40, the memory alloy spring 50 and the return spring 60 are respectively in driving connection with the valve rod 10 of the valve core component, the memory alloy spring 50 and the return spring 60 are used for providing forces in opposite directions to the valve rod 10, and the memory alloy spring 50 and the return spring 60 are matched to drive the valve rod 10 to move. The memory alloy spring 50 can directly sense the temperature of the fluid in the flow channel 402, and has high sensitivity.

In the embodiment, the memory alloy spring 50 and the return spring 60 are sleeved on the valve rod 10 at intervals along the axial direction of the valve rod 10; the first end of the memory alloy spring 50 is abutted with the valve core component, and the second end of the memory alloy spring 50 is abutted with the valve body 40; the first end of the return spring 60 abuts the valve body 40, and the second end of the return spring 60 abuts the spool member. Specifically, the stopper 30 of the spool member is located between the memory alloy spring 50 and the return spring 60, the first end of the memory alloy spring 50 abuts against one side of the stopper 30, and the second end of the return spring 60 abuts against the other side of the stopper 30.

Further, the valve body 40 is further provided with a first mounting groove 404 and a second mounting groove 405, the first mounting groove 404 is arranged on one side of the first opening 401, which is close to the flow channel 402, the first mounting groove 404 is coaxial with the first opening 401, the diameter of the first mounting groove 404 is larger than that of the first opening 401, the first end of the return spring 60 is positioned in the first mounting groove 404, and the outer side wall of the return spring 60 is in guiding fit with the first mounting groove 404; the second mounting groove 405 is disposed on a side of the second opening 403, which is close to the flow channel 402, the second mounting groove 405 is coaxial with the second opening 403, the diameter of the second mounting groove 405 is larger than that of the second opening 403, the second end of the memory alloy spring 50 is disposed in the second mounting groove 405, and the outer side wall of the memory alloy spring 50 is in guiding fit with the second mounting groove 405. The first mounting groove 404 and the second mounting groove 405 respectively accommodate and guide the return spring 60 and the memory alloy spring 50, ensure the stability of the return spring 60 and the memory alloy spring 50, and prevent the return spring 60 and the memory alloy spring 50 from bending.

Specifically, the memory alloy spring 50 includes a first guide section 51 and a second guide section 52 sequentially arranged along the axial direction, the first guide section 51 is close to the return spring 60 and the first guide section 51 is in guide fit with the valve rod 10, the inner diameter of the first guide section 51 is smaller than the outer diameter of the valve core, and the second guide section 52 is in guide fit with the valve body 40 through the second mounting groove 405; the return spring 60 includes a third guide section 61 and a fourth guide section 62 sequentially arranged in the axial direction, the fourth guide section 62 is close to the memory alloy spring 50 and the fourth guide section 62 is in guide fit with the valve stem 10, the inner diameter of the fourth guide section 62 is smaller than the outer diameter of the valve core, and the third guide section 61 is in guide fit with the valve body 40 through the first mounting groove 404. By the arrangement, the situation that the memory alloy spring 50 and the return spring 60 incline or bend can be further avoided, and the stability of the memory alloy spring 50 and the return spring 60 for driving the valve core component is ensured. Moreover, after the memory alloy spring 50 and the return spring 60 are assembled with the valve core component, the two valve cores respectively play a role of stopping the memory alloy spring 50 and the return spring 60, so that the situations that the memory alloy spring 50, the return spring 60 and the valve core component fall off after the memory alloy spring 50, the return spring 60 and the valve core component are assembled can be reduced or avoided.

In this embodiment, the diameters of the second guide section 52 of the memory alloy spring 50 and the third guide section 61 of the return spring 60 are different, specifically, the diameter of the second guide section 52 is smaller than the diameter of the third guide section 61, so that the memory alloy spring 50 and the return spring 60 can be conveniently distinguished, and the situation that the memory alloy spring 50 and the return spring 60 are reversely assembled is avoided.

In this embodiment, the valve body 40 includes a body 41 and a valve seat 42, wherein the body 41 is provided with a flow passage 402, a second opening 403, a second mounting groove 405 and a mounting port 4101, the valve seat 42 is provided with a first opening 401 and a first mounting groove 404 which are in communication with each other, and the valve seat 42 is provided at the mounting port 4101 and is screwed with the body 41. By this arrangement, convenience in assembling the valve seat 42 and the body portion 41 can be ensured.

The temperature of the memory alloy spring 50 may be set to be increased, the memory alloy spring 50 may be set to be extended, the temperature of the memory alloy spring 50 may be set to be decreased, the memory alloy spring 50 may be set to be contracted, and the temperature of the memory alloy spring 50 may be set to be decreased.

The working logic of the drain valve in this embodiment is: when the water temperature reaches the temperature range, the memory alloy spring 50 contracts, the spring force of the return spring 60 is larger than that of the memory alloy spring 50, the return spring 60 stretches, and the valve core part moves along the direction from the first opening 401 to the second opening 403, so that the valve is opened. When the water temperature is higher than 3-5 ℃, the memory alloy spring 50 is stretched, the spring force of the memory alloy spring 50 is larger than the spring force of the return spring 60, the return spring 60 is contracted, and the valve core part moves along the direction from the second opening 403 to the first opening 401, so that the valve is closed.

The assembly of the drain valve comprises the following steps: step one: sequentially sleeving the memory alloy spring 50 and the return spring 60 on the valve rod 10 at intervals along the axial direction of the valve rod 10 of the valve core component; mounting the stopper 30 of the spool part to the valve stem 10 such that the stopper 30 is located between the memory alloy spring 50 and the return spring 60, so that both sides of the stopper 30 are stopper-fitted with the memory alloy spring 50 and the return spring 60, respectively; fitting the spool of the spool part to the end of the valve stem 10; step two: the assembled memory alloy spring 50, return spring 60 and valve core member are assembled into the body portion 41 of the drain valve such that the second valve core 22 of the valve core member corresponds to the second opening 403, the second guide section 52 of the memory alloy spring 50 extends into the second mounting groove 405, after which the valve seat 42 is aligned with the mounting port 4101, the third guide section 61 of the return spring 60 is aligned with the first mounting groove 404, the first valve core 21 is aligned with the first opening 401, and the valve seat 42 is mounted at the mounting port 4101. By this arrangement, the memory alloy spring 50, the return spring 60, and the spool member can be assembled easily.

As shown in fig. 10 and 11, the third embodiment of the present utility model provides a drain valve, which is different from the second embodiment in that:

when the water temperature reaches the temperature range, the memory alloy spring 50 is stretched, the spring force of the return spring 60 is smaller than that of the memory alloy spring 50, the return spring 60 is contracted, and the valve core part moves along the direction from the second opening 403 to the first opening 401, so that the valve is opened. When the water temperature is higher than 3-5 ℃, the memory alloy spring 50 contracts, the spring force of the memory alloy spring 50 is smaller than the spring force of the return spring 60, the return spring 60 stretches, and the valve core part moves along the direction from the first opening 401 to the second opening 403, so that the valve is closed.

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 valve body member movably disposed within a drain valve, the valve body member for controlling a flow rate of an opening of the drain valve, the valve body member comprising:

a valve stem (10);

and a valve core, at least part of which is arranged separately from the valve rod (10), wherein the valve core is used for controlling the flow of an opening of the drain valve.

2. The spool part according to claim 1, characterized in that two spools are provided, two spools being provided at both ends of the valve stem (10), respectively, at least one spool being provided separately from the valve stem (10).

3. The spool part according to claim 2, characterized in that the spool comprises a first spool (21), the first spool (21) is provided separately from the valve stem (10), a connecting hole (201) is provided on the first spool (21), and an end portion of the valve stem (10) is inserted into the connecting hole (201) and connected with the first spool (21).

4. The spool piece of claim 3, wherein the spool piece comprises:

the axial limiting structure is arranged between the valve rod (10) and the first valve core (21) and is used for limiting the relative position of the first valve core (21) and the valve rod (10) in the axial direction.

5. The valve core component according to claim 4, characterized in that the valve rod (10) comprises a main body section (11) and a connecting section (12) which are arranged in a stepped manner, a stepped surface is formed between the connecting section (12) and the main body section (11), the first valve core (21) is arranged on the connecting section (12) in a penetrating manner, the end face, close to the other valve core, of the first valve core (21) is in limit fit with the stepped surface, and the stepped surface forms the axial limit structure.

6. The spool piece of claim 1, further comprising:

and a stop part (30) is arranged on the side wall of the valve rod (10), and the stop part (30) is used for being in stop fit with a spring component of the drain valve.

7. The spool part according to claim 1, characterized in that an assembly groove (202) is provided on the spool, the assembly groove (202) being provided on an outer side wall of the spool in a circumferential direction of the spool in a ring shape, the assembly groove (202) being for assembling a seal ring.

8. A drain valve, the drain valve comprising:

a valve body (40), wherein a first opening (401) and a circulation channel (402) which are communicated with each other are arranged on the valve body (40), and the first opening (401) is arranged at the side part of the circulation channel (402);

the spool part according to any one of claims 1 to 7, which is provided in the valve body (40), the spool part being movable relative to the valve body (40), the spool of the spool part being provided in correspondence with the first opening (401), the spool being capable of blocking or opening the first opening (401).

9. The drain valve of claim 8, further comprising:

memory alloy spring (50) and reset spring (60) are all located in valve body (40), memory alloy spring (50) with reset spring (60) respectively with valve rod (10) are connected, memory alloy spring (50) with reset spring (60) are used for providing opposite direction effort for valve rod (10), memory alloy spring (50) with reset spring (60) cooperation is in order to drive valve rod (10) removal.

10. The drain valve according to claim 9, wherein the memory alloy spring (50) and the return spring (60) are spaced apart from each other along the axial direction of the valve stem (10) and are fitted over the valve stem (10);

the memory alloy spring (50) comprises a first guide section (51), the first guide section (51) is in guide fit with the valve rod (10), and the inner diameter of the first guide section (51) is smaller than the outer diameter of the valve core;

the return spring (60) comprises a fourth guide section (62), the fourth guide section (62) is in guide fit with the valve rod (10), and the inner diameter of the fourth guide section (62) is smaller than the outer diameter of the valve core.