CN210770396U

CN210770396U - Memory alloy water valve

Info

Publication number: CN210770396U
Application number: CN201920188271.2U
Authority: CN
Inventors: 王思泉; 李宗财
Original assignee: Shenzhen Starspring Masterials Co ltd
Current assignee: Shenzhen Starspring Masterials Co ltd
Priority date: 2019-02-03
Filing date: 2019-02-03
Publication date: 2020-06-16
Anticipated expiration: 2029-02-03

Abstract

The utility model discloses a memory alloy water valve, which comprises a valve body, set up to water channel between the water inlet of valve body and the delivery port, be provided with the case in the water channel, the motion of case changes water channel's break-make state, be provided with the case chamber in the valve body, be provided with plug and reset spring in the case chamber, the one end of plug is used for pressing down under reset spring's effort the case, the other end with reset spring connects, the chamber wall in case chamber is made by non-magnetic shielding material the outside activity in case chamber is provided with magnet, magnet drives its activity through a shape memory alloy part, shape memory alloy part is connected with its power supply unit who takes place deformation of drive.

Description

Memory alloy water valve

Technical Field

The utility model relates to a control valve field, in particular to memory alloy water valve.

Background

The water valve is used in the occasion of controlling the on-off of the water path. The existing water valve generally adopts an electromagnetic water valve and comprises a valve body, wherein a valve core is arranged in a water passing channel of the valve body, the valve core is connected with an iron core, and one end of the iron core is connected with a reset spring. The valve core can be driven to move under the action of the electromagnet, and then the valve core is opened and closed. However, the electromagnetic water valve has the following disadvantages:

1. the volume is large, the weight is heavy, the structure is complex, and the manufacturing cost is high;

2. the electromagnetic water valve usually consumes a large amount of electricity, and when the battery is used as a power supply, the electricity consumption is large, so that the battery is quickly dead, and the user cannot accept the power.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a memory alloy water valve to the aforesaid is not enough and the defect of prior art to solve above-mentioned problem.

The utility model provides a technical problem can adopt following technical scheme to realize:

the memory alloy water valve comprises a valve body, wherein a water passing channel is arranged between a water inlet and a water outlet of the valve body, a valve core is arranged in the water passing channel, the motion of the valve core changes the on-off state of the water passing channel, a valve core cavity is arranged in the valve body, a core rod and a reset spring are arranged in the valve core cavity, one end of the core rod is used for pressing the valve core under the action force of the reset spring, and the other end of the core rod is connected with the reset spring.

In a preferred embodiment of the present invention, the valve core is provided with a balance hole and a drainage hole, the balance hole is used for water from the water inlet to enter the valve core cavity after passing through the balance hole, and when the core rod compresses the valve core, the core rod simultaneously seals the drainage hole.

In a preferred embodiment of the present invention, one end of the shape memory alloy member is a fixed end, and the other end is a driving end connected to the magnet.

In a preferred embodiment of the present invention, one end of the magnet is a hinged end, and a reset torsion spring is provided on the hinged end, and the driving end of the shape memory alloy member is connected to the middle of the magnet.

In a preferred embodiment of the present invention, the valve body is connected to a detachable sealing cover, and the valve core chamber is enclosed by the sealing cover and the valve body inner chamber.

In a preferred embodiment of the present invention, the sealing cover is connected to the valve body by a screw thread.

In a preferred embodiment of the present invention, the shape memory alloy member is a shape memory alloy wire or a spring made of a shape memory alloy material or a strip made of a shape memory alloy material.

In a preferred embodiment of the present invention, the core rod is an iron core.

In a preferred embodiment of the present invention, the core rod includes a plastic rod and a magnetic block connected to the plastic rod, and the magnetic block is disposed on a side of the plastic rod close to the magnet.

Since the technical scheme as above is used, the utility model discloses a shape memory alloy part drive magnet activity, then the position of change plug reaches the purpose that changes the case position, changes the break-make state through the case, simple structure and the operation of being convenient for, greatly reduced manufacturing cost. And the utility model discloses need not to use the electro-magnet power supply, have that the quality is heavy, simple structure, low in manufacturing cost's advantage. And the shape memory alloy part can complete the action only by needing smaller current, and the power consumption is smaller.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a valve element in a closed state according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the valve element according to an embodiment of the present invention in an open state.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further explained below.

Referring to fig. 1 and 2, the memory alloy water valve includes a valve body 100, a water passage 110 is disposed between a water inlet 101 and a water outlet 102 of the valve body 100, and a valve core 200 is disposed in the water passage 110. The movement of the valve cartridge 200 changes the on-off state of the water passage 110. A composite sealing ring 210 is arranged at the sealing position of the valve core 200 and the water channel 110. The valve body 100 is provided with a valve core chamber 300 therein, the valve core chamber 300 is provided with a core rod 400 and a return spring 500 therein, one end of the core rod 400 is used for pressing the valve core under the action of the return spring 500, and the other end of the core rod 400 is connected with the return spring 500. The core rod 400 in this embodiment is an iron core, but the core rod 400 may also include a plastic rod and a magnetic block connected to the plastic rod, and the magnetic block is disposed on a side of the plastic rod adjacent to the magnet. The core rod 400 may be any other magnetic member or easily magnetized member as long as it can generate a magnetic field with a magnet.

The cavity wall of the valve core cavity 300 is made of non-magnetic shielding materials, a magnet 600 is movably arranged on the outer side of the valve core cavity 300, the magnet 600 is driven to move through a shape memory alloy part 700, and the shape memory alloy part 700 is connected with a power supply device 800 for driving the shape memory alloy part to deform.

The shape memory alloy component 700 in this embodiment is a spring made of a shape memory alloy material or a strip made of a shape memory alloy material. The shape memory alloy member 700 has one end fixed by a fixing terminal 710 and the other end driving end connected to the magnet 600. One end of the magnet 600 is a hinged end 610, and a return torsion spring 620 is provided on the hinged end 610, and the driving end of the shape memory alloy member 700 is connected to the middle of the magnet 600. Of course, the way that the shape memory alloy member 700 drives the magnet 600 to move is not limited to the above-mentioned case, and any way that directly or indirectly drives the magnet 600 to move by utilizing the deformation of the shape memory alloy member 700 should fall within the protection scope of the present invention.

For convenience of assembly and maintenance, the valve body 100 is connected with a detachable sealing cover 900, the valve core cavity 300 is enclosed by the sealing cover 900 and the inner cavity of the valve body 100, and the sealing cover 900 is connected with the valve body 100 through threads.

The valve core 200 in this embodiment is provided with a balance hole 201 and a drain hole 202, the balance hole 201 is used for allowing water in the water inlet 101 to enter the valve core cavity 300 after passing through the balance hole 201, and when the core rod 400 presses the valve core 200, the core rod 400 seals the drain hole 202 at the same time.

The working principle of the utility model is as follows:

when the water valve needs to be closed, as shown in fig. 1, the power supply device 800 is not powered on at this time, the shape memory alloy component 700 has the original length, the magnet 600 swings around the hinged end 610 to reset under the elastic force of the reset torsion spring 620, the other end of the magnet 600 is far away from the iron core in the valve body 100 at this time, so that the attraction force between the magnet 600 and the iron core is smaller than the elastic force of the reset spring 500, the acting force of the reset spring 500 drives the iron core to press the valve core 200, and the water passing channel 110 cannot pass water. And the water of the water inlet 101 at this moment enters the valve core cavity 300 after passing through the balance hole 201, the water pressure in the valve core cavity 300 is balanced with the water pressure of the water inlet 101 at this moment, and the iron core seals the drain hole 202 at the same time, so that the problem that the valve core 200 is automatically opened due to the water pressure difference is solved.

When the water valve needs to be opened, as shown in fig. 2, the power supply device 800 is powered on, so that the shape memory alloy component 700 can obtain an instant temperature rise, the shape memory alloy component 700 reaches the phase change temperature and becomes short, the magnet 600 is driven to swing around the hinged end 610, the elasticity of the reset torsion spring 620 is overcome, and the other end of the magnet 600 is close to the iron core in the valve body 100. Because the cavity wall of the valve core cavity 300 is made of a non-magnetic shielding material, under the attraction force of the magnet 600, the iron core can overcome the elastic force of the return spring 500 and move towards the direction of the magnet 600, so that the valve core 200 is not pressed any more, the drain hole 202 is opened at the moment, the water pressure in the valve core cavity 300 is smaller than the water pressure of the water inlet 101, and the valve core 200 is opened under the action of the pressure difference, so that the water passing channel 110 can pass water.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The memory alloy water valve comprises a valve body, wherein a water passing channel is arranged between a water inlet and a water outlet of the valve body, a valve core is arranged in the water passing channel, the motion of the valve core changes the on-off state of the water passing channel, a valve core cavity is arranged in the valve body, a core rod and a reset spring are arranged in the valve core cavity, one end of the core rod is used for pressing the valve core under the action force of the reset spring, and the other end of the core rod is connected with the reset spring.

2. The memory alloy water valve of claim 1, wherein the valve core is provided with a balance hole and a drain hole, the balance hole is used for allowing water at the water inlet to enter the valve core cavity after passing through the balance hole, and when the core rod presses the valve core, the core rod simultaneously seals the drain hole.

3. The memory alloy water valve of claim 1 wherein the shape memory alloy member has a fixed end at one end and a drive end coupled to the magnet at the other end.

4. The memory alloy water valve of claim 3 wherein the magnet has a hinged end with a return torsion spring disposed thereon, the drive end of the shape memory alloy member being coupled to a middle portion of the magnet.

5. The memory alloy water valve of claim 1, wherein the valve body is coupled to a removable seal cover, and wherein the valve core chamber is defined by the seal cover and an inner chamber of the valve body.

6. The memory alloy water valve of claim 5 wherein the seal cap is threadably engaged with the valve body.

7. The memory alloy water valve of claim 1 wherein the shape memory alloy member is a shape memory alloy wire or a spring made of a shape memory alloy material or a strip made of a shape memory alloy material.

8. The memory alloy water valve of claim 1 wherein the core rod is an iron core.

9. The memory alloy water valve of claim 1 wherein the plunger comprises a plastic rod and a magnetic block attached to the plastic rod, the magnetic block being disposed on a side of the plastic rod adjacent to the magnet.