Frost crack prevention electromagnetic valve and faucet

Abstract

The utility model provides an anti-frost-crack solenoid valve which comprises a shell, the shell is provided with a water inlet connector, a water outlet connector and a water passing channel communicated with the water inlet connector and the water outlet connector, the water inlet connector and / or the water outlet connector are / is provided with metal sleeves, the shell is made of plastic, and the shell is provided with a water inlet and a water outlet. The shell is connected with the metal sleeve into a whole through injection molding, and due to the arrangement of the metal sleeve, the situation that the water inlet connector and / or the water outlet connector are / is frozen to be cracked due to water freezing expansion is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electromagnetic valve, concretely relates to a kind of electromagnetic valve and faucet of anti-freezing crack. BACKGROUND

[0002] In prior art, electromagnetic valve is combined with faucet, and accurate control of water flow of faucet can be realized by electromagnetic valve.But when the use environment temperature of faucet is reduced to 0 DEG C or below, ice phenomenon will occur to water, and water will expand when freezing, and it will expand about 9%.But because the pipe wall of water inlet interface and water outlet interface of electromagnetic valve is thin, and the space in pipe is fixed, so the pressure generated by ice expansion will act on the pipe wall at water inlet interface and water outlet interface, and then cause it to be cracked.

[0003] For example, in winter in the north, outdoor temperature is often lower than-10 DEG C, and if there is no good warming measure in room, it is easy to be cracked due to water freezing expansion.South of most areas has no heating in room, and when in winter, temperature will be reduced to-5 DEG C~0 DEG C, and it is also easy to be cracked due to water freezing expansion. SUMMARY

[0004] In view of the deficiencies in prior art, the purpose of the utility model is to provide a kind of electromagnetic valve and faucet of anti-freezing crack, to solve the problems mentioned in the background section.

[0005] The utility model realizes by the following technical scheme:

[0006] A kind of electromagnetic valve of anti-freezing crack, including shell, the shell is equipped with water inlet interface, water outlet interface and the water passage that is connected with water inlet interface and water outlet interface, water inlet interface and / or water outlet interface is equipped with metal sleeve, the shell is plastic material, the shell is connected as a whole with the metal sleeve by injection molding.

[0007] Further, the metal sleeve includes straight pipe section and circular ring section connected to the side end of the straight pipe section, the circular ring section is arranged at the bottom of the water inlet interface and / or the water outlet interface,

[0008] Further, the shell is provided with a limiting portion extending to the inner circumferential surface of the metal sleeve.

[0009] Further, the straight pipe section is provided with a plurality of through holes, and the shell fills the through holes.

[0010] Further, the through hole is a circular hole.

[0011] Further, the metal sleeve is made of copper.

[0012] Further, the wall thickness of the metal sleeve is greater than or equal to 1mm.

[0013] Further, a valve core is further included, the valve core is equipped with a valve rod, the valve rod can move between the position of blocking and giving way to the water passage.

[0014] In another aspect, the utility model provides a water faucet, including the anti -frozen crack's electromagnetic valve of any one of the above.

[0015] The utility model discloses a beneficial effect is: an anti -frozen crack's electromagnetic valve, including the casing, the casing is equipped with water inlet, water outlet and the water passage of the communication water inlet and water outlet, the water inlet and / or water outlet is equipped with the metal cover, the casing is the plastic material, the casing is connected as a whole with the metal cover through injection molding, through the setting of metal cover, thereby avoiding the water freezing expansion and leading to the water inlet and / or water outlet frozen crack. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the perspective drawing of the utility model.

[0017] Figure 2 It is the sectional view of the utility model.

[0018] Figure 3 It is the perspective drawing of metal cover first embodiment of the utility model.

[0019] Figure 4 It is the perspective drawing of metal cover second embodiment of the utility model.

[0020] Among them, the above-mentioned drawing includes the following figure marks:

[0021] 1, casing;11, water inlet;12, water outlet;13, water passage;14, limiting portion;2, metal cover;21, straight pipe section;211, through -hole;22, circular ring section;3, valve core;31, valve rod. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantage of the utility model embodiment clearer, the following will combine the drawings in the utility model embodiment, and the technical scheme in the utility model embodiment is clearly and completely described.In this need to explain, for the explanation of these embodiments is used to help understanding the utility model, but does not constitute the limitation of the utility model.In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Refer to Figures 1 to 4As shown in the drawings, the anti-freezing electromagnetic valve comprises a shell 1, the shell 1 is provided with a water inlet interface 11, a water outlet interface 12 and a water passing channel 13 connecting the water inlet interface 11 and the water outlet interface 12, the water inlet interface 11 and / or the water outlet interface 12 is provided with a metal sleeve 2, the shell 1 is made of plastic material, and the shell 1 is connected with the metal sleeve 2 integrally by injection molding.

[0024] Specifically, generally, the indoor temperature is higher than the outdoor temperature, when the water outlet interface 12 of the electromagnetic valve is used towards the indoor, for example, the water flow is from the outdoor to the water inlet interface 11, the outdoor cooling is easy to cause the freezing and cracking of the water inlet interface 11; when the water outlet interface 12 of the electromagnetic valve is used towards the outdoor, for example, the water flow is from the indoor to the water outlet interface 12, the outdoor cooling is easy to cause the freezing and cracking of the water outlet interface 12. Therefore, according to the change of the application scene of the electromagnetic valve, the metal sleeve 2 can be arranged at the water inlet interface 11 and the water outlet interface 12, or the metal sleeve 2 can be arranged at the water inlet interface 11 or the water outlet interface 12 alone, the pressure generated by the ice expansion is borne by the metal sleeve 2, and the freezing and cracking is prevented.

[0025] Since the shell 1 is made by injection molding, the production cost and the material cost can be reduced to the maximum, during the processing, the metal sleeve 2 is placed in the mold, then the thermoplastic plastic is injected, the shell 1 is connected with the metal sleeve 2 integrally by injection molding, and the connection strength of the shell 1 and the metal sleeve 2 is ensured.

[0026] Referring to Figure 2 and Figure 3 As shown in the drawings, the metal sleeve 2 comprises a straight pipe section 21 and a circular ring section 22 connected to the side end of the straight pipe section 21, the circular ring section 22 is arranged at the bottom of the water inlet interface 11 and / or the water outlet interface 12, wherein the contact area of the metal sleeve 2 and the shell 1 can be further increased by arranging the circular ring section 22, and the connection strength of the shell 1 and the metal sleeve 2 is improved.

[0027] The shell 1 is provided with a limiting portion 14 extending to the inner circumferential surface of the metal sleeve 2, the metal sleeve 2 is wrapped by the limiting portion 14, the metal sleeve 2 can be prevented from separating from the shell 1 along the opening direction of the water inlet interface 11 or the water outlet interface 12, the connection strength of the shell 1 and the metal sleeve 2 is further improved, and the metal sleeve 2 is prevented from directly contacting with the water, so that the heavy metal pollution or rusting of the metal sleeve 2 is avoided.

[0028] Referring to Figure 4 As shown in the drawings, the straight pipe section 21 is provided with a plurality of through holes 211, the shell 1 fills the through holes 211, part of the thermoplastic plastic fills the through holes 211 during the injection molding, and the connection strength of the shell 1 and the metal sleeve 2 is further improved.

[0029] The through hole 211 is a circular hole, so that it is convenient to be processed and formed.

[0030] The metal sleeve 2 is made of metal copper, which is not easy to rust due to its own characteristics when in contact with water, thereby prolonging the service life of the electromagnetic valve.

[0031] The wall thickness of the metal sleeve 2 is greater than or equal to 1mm, which ensures that the metal sleeve 2 is not easy to deform and has sufficient anti-cracking ability.

[0032] It has been detected that the electromagnetic valve of the utility model is placed in a constant temperature and humidity box, the constant temperature and humidity box is gradually cooled to-15℃±2℃, maintained for 4h, then taken out after thawing, the product is not damaged, proving that the anti-cracking performance of the utility model.

[0033] Further comprising a valve core 3, the valve core 3 is provided with a valve rod 31, the valve rod 31 can move between the positions of blocking and giving way to the water passage 13, the opening or closing of the water flow is realized by driving the valve core 3, and the accurate control of the flow is ensured.

[0034] On the other hand, the utility model provides a water faucet, comprising a kind of anti-cracking electromagnetic valve described in any one of the above, so that the water faucet has the anti-cracking ability of the electromagnetic valve of the utility model.

[0035] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0036] In the description of the utility model, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features.

[0037] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A freeze-resistant solenoid valve, comprising a housing (1), wherein the housing (1) is provided with an inlet port (11), an outlet port (12), and a water passage (13) connecting the inlet port (11) and the outlet port (12), characterized in that: The water inlet (11) and / or the water outlet (12) are provided with metal sleeves (2), the housing (1) is made of plastic, and the housing (1) is connected to the metal sleeves (2) by injection molding.

2. The anti-freeze cracking solenoid valve according to claim 1, characterized in that: The metal sleeve (2) includes a straight pipe section (21) and an annular section (22) connected to the side end of the straight pipe section (21). The annular section (22) is disposed at the bottom of the water inlet (11) and / or the water outlet (12).

3. The anti-freeze cracking solenoid valve according to claim 2, characterized in that: The housing (1) is provided with a limiting part (14) extending to the inner circumferential surface of the metal sleeve (2).

4. The anti-freeze cracking solenoid valve according to claim 2, characterized in that: The straight pipe section (21) is provided with multiple through holes (211), and the shell (1) fills the through holes (211).

5. The anti-freeze cracking solenoid valve according to claim 4, characterized in that: The through hole (211) is a circular hole.

6. The anti-freeze cracking solenoid valve according to claim 1, characterized in that: The metal sleeve (2) is made of copper.

7. The anti-freeze cracking solenoid valve according to claim 6, characterized in that: The wall thickness of the metal sleeve (2) is greater than or equal to 1 mm.

8. The anti-freeze cracking solenoid valve according to claim 1, characterized in that: It also includes a valve core (3) having a valve stem (31) that can move between blocking and accommodating the water passage (13).

9. A faucet, characterized in that: Including a solenoid valve for preventing freezing and cracking as described in any one of claims 1 to 8.

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