CN211398639U

CN211398639U - Solenoid valve with sensor

Info

Publication number: CN211398639U
Application number: CN201922236316.1U
Authority: CN
Inventors: 张凯
Original assignee: Shanghai Fu Filter Enterprise Development Co ltd
Current assignee: Shanghai Fu Filter Enterprise Development Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-09-01
Anticipated expiration: 2029-12-13

Abstract

The utility model discloses a solenoid valve with a sensor, which can detect whether the valve core generates leakage; the valve comprises a valve body, wherein a water inlet hole, a valve cavity, a limiting ring, a water outlet hole, a first communicating hole, a pressure relief channel, a pressure relief cavity, a second communicating hole and a detection groove are arranged in the valve body; a valve rod spring is sleeved on the part of the valve rod, which is positioned between the valve core and the end surface of the inner side of the valve cavity; a pressure relief piston is assembled in the pressure relief cavity in a clamping, sealing and slidable mode, the pressure relief piston is assembled and fixed with one end of a pressure rod, the other end of the pressure rod is installed in a pressure detection groove and is assembled and fixed with the input end of a pull pressure sensor, and the pull pressure sensor is installed in the pressure detection groove; and the signal end of the pull pressure sensor is in communication connection with the signal end of the MCU arranged in the end cover cavity.

Description

Solenoid valve with sensor

Technical Field

The present invention relates to a solenoid valve, and more particularly to a solenoid valve having a sensor.

Background

The electromagnetic valve is a valve driven by electromagnetism, and is mainly used in a pipeline for automatic control. At present, in a device for water taking by swiping a card in a school, the on-off of water flow is generally controlled by a solenoid valve, and the solenoid valve is opened after the device is mainly used for swiping the card and charging, so that water flows out. But school's official network is more, and the quantity that this kind of valve is generally installed in student's dormitory is also bigger, consequently can not carry out timely maintenance. And the case of solenoid valve passes through the sealing washer and seals, and the sealing washer is damaged easily again, consequently produces very easily and reveals, because the solenoid valve is numerous, can't discover in time at all when producing the leakage, leads to going out water under the non-open state many times, causes water supply enterprise or school to lose. In addition, when a school maintains a pipe network, if students do not know in time that the cards are still swiped, normal charging is caused, but water does not flow out, and disputes are caused.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects in the prior art, the technical problem to be solved in the present invention is to provide a solenoid valve with a sensor, which can detect whether the valve core is exposed.

In order to achieve the purpose, the utility model provides a solenoid valve with a sensor, which comprises a valve body, wherein a water inlet hole, a valve cavity, a limiting ring, a water outlet hole, a first communicating hole, a pressure relief channel, a pressure relief cavity, a second communicating hole and a detection groove are arranged inside the valve body; a valve rod spring is sleeved on the part of the valve rod, which is positioned between the valve core and the end surface of the inner side of the valve cavity;

a pressure relief piston is assembled in the pressure relief cavity in a clamping, sealing and sliding manner, the pressure relief piston is assembled and fixed with one end of a pressure rod, the other end of the pressure rod is arranged in a pressure detection groove and assembled and fixed with the input end of a tension pressure sensor, and the tension pressure sensor is arranged in the pressure detection groove; and the signal end of the pull pressure sensor is in communication connection with the signal end of the MCU arranged in the end cover cavity.

Preferably, the limiting ring is fixed inside the valve cavity.

Preferably, a turbidity sensor is arranged on the part of the valve cavity between the limiting ring and the water inlet hole, and the signal end of the turbidity sensor is in communication connection with the signal end of the MCU.

Preferably, the end cover is fixed on the valve body, and an end cover cavity is formed inside the end cover.

Preferably, a first retaining spring and a second retaining spring are respectively arranged between two sides of the pressure relief piston and two end faces of the inner side of the pressure relief cavity; the second communicating hole and the first communicating hole are respectively communicated with pressure relief cavities positioned at two sides of the pressure relief piston, and the second communicating hole and the first communicating hole are also respectively communicated with the valve cavity and the water outlet hole;

the pressure channel is communicated with the pressure relief cavity, the first retaining spring and the second retaining spring are used for enabling the pressure relief piston to keep a stable position in the pressure relief cavity, and the pressure relief piston seals the pressure relief channel and the pressure relief cavity at the moment.

Preferably, the part of the pressure rod between the pressure detection groove and the pressure relief cavity is respectively arranged in two sealing rings and a water absorption bag between the two sealing rings, and the water absorption bag is filled with super absorbent water absorption resin; the package that absorbs water is installed at waterproof intracavity, and the package outside that absorbs water still overlaps and be equipped with the gasbag, and the gasbag is installed and is provided with the drive arch in waterproof intracavity and gasbag, and the drive arch gets into behind the waterproof chamber and surveys the groove and fixed with the assembly of the trigger plate of installing in surveying the inslot, trigger plate can slide in surveying the inslot, and trigger plate just to micro-gap switch's trigger end, micro-gap switch installs at surveying the inslot.

Preferably, a limiting block for limiting the maximum displacement of the trigger plate to the micro switch is further arranged in the detection groove.

Preferably, the absorbent bag is made of a high-water-absorption material.

The utility model has the advantages that: the utility model discloses whether simple structure and pressure change through drawing pressure sensor judge water pressure normally to judge whether intraductal sufficient water has, thereby judge and can normally go out water, in addition the utility model discloses a whether leak is surveyed to the gasbag, thereby in time safeguards.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of fig. 1 at F1.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, the electromagnetic valve with a sensor in this embodiment includes a valve body 110, a water inlet hole 111, a valve cavity 112, a limiting ring 113, a water outlet hole 114, a first communicating hole 115, a pressure relief channel 116, a pressure relief cavity 117, a second communicating hole 118, and a detection groove 119 are disposed inside the valve body 110, the water inlet hole 111 and the water outlet hole 114 are communicated through the valve cavity 112, the limiting ring 113 is fixed inside the valve cavity 112, a turbidity sensor 220 is mounted on a portion of the valve cavity 112 located between the limiting ring 113 and the water inlet hole 111, the valve cavity 112 is located on one side of the limiting ring 113 close to an end cap 120 and is clamped, slidably and hermetically assembled with a valve core 410, the valve core 410 is assembled and fixed to one end of a valve stem 211, the other end of the valve stem 211 penetrates through a valve housing 110 and.

The valve rod 211 is sleeved with a valve rod spring 310 at a part between the valve core 410 and the end surface of the inner side of the valve cavity 112, and the valve rod spring 310 is used for generating elastic force for pushing the valve core 410 to a limit ring, so that the valve core seals the space between the valve cavity and the water outlet hole 114;

the end cover 120 is fixed on the valve body 110, an end cover cavity 121 is formed inside the end cover 120, a pressure relief piston 420 is clamped, sealed and slidably assembled in the pressure relief cavity 117, and a first retaining spring 320 and a second retaining spring 330 are respectively installed between two sides of the pressure relief piston 420 and two end faces of the inner side of the pressure relief cavity 117; the second communication hole 118 and the first communication hole 115 are respectively communicated with the pressure relief cavity 117 located at two sides of the pressure relief piston 420, and the second communication hole 118 and the first communication hole 115 are also respectively communicated with the valve cavity 112 and the water outlet hole 114.

The pressure channel 116 is communicated with the pressure relief cavity 117, and the first retaining spring 320 and the second retaining spring 330 are used for keeping the pressure relief piston 420 at a stable position in the pressure relief cavity 117, and at the moment, the pressure relief piston 420 seals between the pressure relief channel 116 and the pressure relief cavity 117.

The pressure relief piston 420 is fixedly assembled with one end of a pressure rod 510, the other end of the pressure rod 510 is arranged in the pressure detection groove 101 and fixedly assembled with the input end of a pull pressure sensor 230, and the pull pressure sensor 230 is arranged in the pressure detection groove 101; the signal end of the pull pressure sensor 230 is in communication connection with the signal end of the MCU installed in the end cover cavity 121; in use, the pressure bar 510 applies a pulling or pressing force to the pull pressure sensor 230.

The part of the pressure rod 510 between the pressure detection tank 101 and the pressure relief cavity 117 is respectively arranged in two sealing rings 650 and a water absorption bag 630 between the two sealing rings, and the water absorption bag 630 is filled with super absorbent water absorption resin 640; the package 630 that absorbs water is installed in waterproof chamber 102, and the package 630 outside that absorbs water still overlaps and is equipped with gasbag 620, and gasbag 620 is installed in waterproof chamber 102 and is provided with the protruding 621 of drive on the gasbag, and the protruding 621 of drive passes and enters into behind the waterproof chamber 102 and surveys groove 103 and fixed with the assembly of the trigger plate 610 of installing in surveying groove 103, trigger plate 610 can slide in surveying groove 103, and trigger plate 610 just to micro-gap switch 240's trigger end, micro-gap switch 240 installs in surveying groove 103, and still is provided with the restriction in the survey groove 103 and triggers the stopper 104 of the maximum displacement of board to micro-gap switch removal to prevent that trigger block 610 from crushing micro-gap switch 240. The absorbent bag 630 is made of a high water absorbent material, such as a high water absorbent cloth.

The sealing ring 650 serves to seal between the pressure rod 510 and the valve housing. The air bag is made of soft elastic materials such as rubber and silica gel, and the air bag 620 is filled with high-pressure gas. The turbidity sensor is used for detecting the turbidity of water in the valve cavity, the signal end of the turbidity sensor is in communication connection with the signal end of the MCU, and the turbidity sensor is mainly used for monitoring the water quality. The pressure detection groove 101, the waterproof chamber 102, and the detection groove 103 are provided in the valve housing, respectively.

When the water-saving valve is used, the water inlet hole 111 and the water outlet hole 114 are respectively communicated with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected into a pipe network, the pipe network is connected with tap water, the water pressure of the tap water acts on the valve core and the pressure relief piston, a student brushes the bayonet, the MCU controls the electromagnet to be electrified (the MCU is in communication connection with the control end of the contactor, the static contact of the contactor is in conductive connection with a power supply, the movable contact is in conductive connection with the power connection end of the electromagnet), the electromagnet drives the valve rod 211 to retract rightwards, so that the water inlet hole 111 and the water outlet hole.

During the use, water in the water inlet hole 111 and the water outlet hole 114 respectively enters the pressure relief cavity, once the water pressure in the water inlet hole 111 is too high, the pressure relief piston is driven to move rightwards by overcoming the first retaining spring 320 until the pressure relief channel 116 is communicated with the valve cavity through the pressure relief cavity and the second communication hole 118, and at the moment, the water in the valve cavity is discharged through the pressure relief channel, so that the sealing damage or pipe explosion at the valve core caused by the too high water pressure is prevented.

In the process of closing the valve core (the state shown in fig. 2), once the valve core leaks, the pressure difference between the water inlet hole 111 and the water outlet hole 114 changes, which is represented as that the pressure at the position of the pull pressure sensor is obviously higher than the value of the valve core when the valve core does not leak, and at the moment, the MCU can judge that the valve core leaks, so that a prompt instruction is sent according to a preset program.

If the pipe network is empty of water, the value output by the pull pressure sensor reaches a horizontal value, and in the embodiment, the value output by the pull pressure sensor is near zero at the moment; when the pressure relief piston moves rightwards, the value output by the pull pressure sensor is negative; when the water outlet is blocked, the value output by the pull pressure sensor is positive; thereby detecting the change of the water pressure in the pressure relief cavity by pulling the pressure sensor.

Once water enters the waterproof cavity 102, water is absorbed by the water-absorbent resin 640, the water-absorbent resin expands to extrude the air bag, gas in the air bag enters the driving protrusion 621, so that the driving protrusion 621 is driven to extend, the driving protrusion 621 drives the trigger plate to move downwards until the driving plate triggers the micro switch 240, the MCU obtains a signal at the moment, the pressure rod is judged to leak, and a maintenance signal is sent out, and a maintenance person is informed to maintain in time.

The details of the present invention are well known to those skilled in the art.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. Solenoid valve with sensor, characterized by: the electromagnetic valve comprises a valve body, wherein a water inlet hole, a valve cavity, a limiting ring, a water outlet hole, a first communicating hole, a pressure relief channel, a pressure relief cavity, a second communicating hole and a detection groove are formed in the valve body, the water inlet hole and the water outlet hole are communicated through the valve cavity, one side of the valve cavity, close to an end cover, is clamped with a valve core, can slide and is assembled in a sealing mode, the valve core is assembled and fixed with one end of a valve rod, and the other end of the valve rod; a valve rod spring is sleeved on the part of the valve rod, which is positioned between the valve core and the end surface of the inner side of the valve cavity;

2. The solenoid valve with sensor as claimed in claim 1, wherein: the limiting ring is fixed inside the valve cavity.

3. The solenoid valve with sensor as claimed in claim 1, wherein: the part of the valve cavity between the limiting ring and the water inlet hole is provided with a turbidity sensor, and the signal end of the turbidity sensor is in communication connection with the signal end of the MCU.

4. The solenoid valve with sensor as claimed in claim 1, wherein: the end cover is fixed on the valve body, and an end cover cavity is formed in the end cover.

5. The solenoid valve with sensor as claimed in claim 1, wherein: a first retaining spring and a second retaining spring are respectively arranged between two sides of the pressure relief piston and two end faces of the inner side of the pressure relief cavity; the second communicating hole and the first communicating hole are respectively communicated with pressure relief cavities positioned at two sides of the pressure relief piston, and the second communicating hole and the first communicating hole are also respectively communicated with the valve cavity and the water outlet hole;

6. The solenoid valve with sensor as claimed in claim 1, wherein: the part of the pressure rod, which is positioned between the pressure detection groove and the pressure relief cavity, is respectively arranged in two sealing rings and a water absorption bag positioned between the two sealing rings, and the water absorption bag is filled with super-absorbent water-absorbent resin; the package that absorbs water is installed at waterproof intracavity, and the package outside that absorbs water still overlaps and be equipped with the gasbag, and the gasbag is installed and is provided with the drive arch in waterproof intracavity and gasbag, and the drive arch gets into behind the waterproof chamber and surveys the groove and fixed with the assembly of the trigger plate of installing in surveying the inslot, trigger plate can slide in surveying the inslot, and trigger plate just to micro-gap switch's trigger end, micro-gap switch installs at surveying the inslot.

7. The solenoid valve with sensor according to claim 6, wherein: and a limiting block for limiting the maximum displacement of the trigger plate to the micro switch is also arranged in the detection groove.

8. The solenoid valve with sensor according to claim 6, wherein: the water absorption bag is made of high water absorption materials.