CN211398718U

CN211398718U - Combined electromagnetic valve

Info

Publication number: CN211398718U
Application number: CN201922236308.7U
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

A combined electromagnetic valve comprises a valve casing, wherein a valve cavity, a pressure measuring cavity, a drainage channel, a sealing groove, a detection groove and a water inlet hole are respectively arranged in the valve casing, a valve core is clamped, slidably and hermetically arranged in the valve cavity, and the water inlet hole is sealed when the valve core is in an initial state; the pressure measuring cavity is communicated with one end of the water inlet pipe and is also respectively communicated with the pressure relief cavity and one end of the drainage channel, the pressure relief cavity is arranged in the pressure relief shell, the pressure relief shell is fixed on the valve shell, a pressure relief valve core is clamped, sealed and slidably arranged in the pressure relief cavity, a pressure relief spring is arranged between the pressure relief valve core and the closed end of the pressure relief cavity, and the pressure relief cavity is communicated with one end of the pressure relief pipe; the parts of the valve cavity, which are positioned on two sides of the valve core, are respectively communicated with one ends of a first water outlet pipe and a second water outlet pipe, the other ends of the first water outlet pipe and the second water outlet pipe are respectively connected with a first flowmeter and a second flowmeter in series and then connected out, and the first flowmeter and the second flowmeter are respectively used for detecting the water flow in the first water outlet pipe and the second water outlet pipe.

Description

Combined electromagnetic valve

Technical Field

The utility model relates to a valve class technique especially relates to a combination solenoid valve.

Background

The electromagnetic valve is a valve driven by electromagnetism, and is mainly used in a pipeline for automatic control. With the increasing complexity and the increasing variety of functions of the existing pipelines, more and more valves are needed. If the valves are selected according to single functions in a traditional mode and then installed one by one, the large purchase, installation and later maintenance cost is obviously caused, and the pipelines are unstable due to excessive joints in the pipelines.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a combined solenoid valve, which integrates the functions of multiple valves.

In order to achieve the purpose, the utility model provides a combined electromagnetic valve, which comprises a valve casing, wherein a valve cavity, a pressure measuring cavity, a drainage channel, a sealing groove, a detection groove and a water inlet hole are respectively arranged in the valve casing, a valve core is clamped, slidably and hermetically arranged in the valve cavity, and the water inlet hole is sealed when the valve core is in an initial state; the pressure measuring cavity is communicated with one end of the water inlet pipe and is also respectively communicated with the pressure relief cavity and one end of the drainage channel, the pressure relief cavity is arranged in the pressure relief shell, the pressure relief shell is fixed on the valve shell, a pressure relief valve core is clamped, sealed and slidably arranged in the pressure relief cavity, a pressure relief spring is arranged between the pressure relief valve core and the closed end of the pressure relief cavity, and the pressure relief cavity is communicated with one end of the pressure relief pipe;

the parts of the valve cavity, which are positioned on two sides of the valve core, are respectively communicated with one ends of a first water outlet pipe and a second water outlet pipe, the other ends of the first water outlet pipe and the second water outlet pipe are respectively connected with a first flowmeter and a second flowmeter in series and then connected out, and the first flowmeter and the second flowmeter are respectively used for detecting the water flow in the first water outlet pipe and the second water outlet pipe.

Preferably, the other end of the water inlet pipe is connected with a water pressure meter in series and then is communicated with an external water source; the signal end of the water pressure meter is in communication connection with the signal end of the PLC, the PLC is installed in the electrical box, the electrical box is installed in the outer cover inner cavity, the outer cover inner cavity is arranged in the outer cover, and the outer cover is fixed on the valve shell.

Preferably, in an initial state, the pressure relief pipe and the pressure relief cavity are sealed and isolated through the pressure relief valve core.

Preferably, the valve core is fixedly assembled with one end of the valve rod, the other end of the valve rod respectively penetrates through the valve cavity, penetrates out of the sealing groove and the detection groove and then enters the inner cavity of the outer cover, a tooth groove is formed in the end of the valve rod, and a rack is formed on the valve rod by the tooth groove; and the tooth grooves are in meshing transmission with the gears, the gears are fixed on the gear shafts, and the gear shafts are connected with the output shafts of the motors.

Preferably, the tooth socket is further assembled with a clamping block in a clamping manner, the clamping block is slidably mounted in a locking box, the locking box is fixed on the inner wall of the inner cavity of the outer cover, the clamping block is fixed at one end of the telescopic shaft, and the other end of the telescopic shaft is sleeved with a clamping spring and penetrates through the locking box to be installed in the electromagnet; the power connection end of the electromagnet is in conductive connection with the movable contact of the contactor, the contacted static contacts are in conductive connection with the power supply respectively, and the control end of the contactor is in communication connection with the signal end of the PLC respectively.

Preferably, one end of the valve rod, which is arranged in the inner cavity of the outer cover, is assembled and fixed with a pull rope of the pull rope displacement sensor, the pull rope is adjusted to be in a parallel state with the valve rod through a guide wheel, the guide wheel is circumferentially and rotatably arranged on a guide shaft, the guide shaft is circumferentially and rotatably assembled with the outer cover, and the gear shaft is also circumferentially and rotatably assembled with the outer cover.

Preferably, a sealing ring is installed in the sealing groove, the sealing ring is hollow, and the inside of the sealing ring is communicated with the other end of the drainage channel.

Preferably, the detection groove is internally provided with an air bag, a water suction bag, a partition plate, a trigger plate and a microswitch, the water suction bag is sleeved on the valve rod, the air bag is sleeved outside the water suction bag and provided with an air bag protrusion, the air bag protrusion penetrates through the partition plate and then is assembled and fixed with the trigger plate, the partition plate is fixed in the detection groove, the trigger plate can slide in the detection groove, the trigger plate is right opposite to the trigger end of the microswitch, and the signal end of the microswitch is in communication connection with the signal end of the PLC.

Preferably, the water absorption bag is filled with water absorption resin with high water absorption, and is made of a high water absorption material; the air bag is made of a high-elasticity soft elastic material, and high-pressure gas is filled in the air bag.

Preferably, a limiting plate is further installed beside the microswitch on the detection groove, and the limiting plate is used for limiting the maximum position of the trigger plate moving towards the microswitch.

The utility model has the advantages that: the utility model discloses the mechanism is simple, and has integrateed the function of relief valve, switching-over valve, stop valve, choke valve, flowmeter, only need the installation once when the installation can, can greatly reduced installation cost, and the whole cost in integrated back reduces for solitary relief valve, switching-over valve, stop valve, choke valve, flowmeter sum by a wide margin to greatly reduced purchase, management, installation, maintenance cost.

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, a combined electromagnetic valve includes a valve housing 110, a valve cavity 111, a pressure measuring cavity 112, a drainage channel 113, a sealing groove 114, a detection groove 115, and a water inlet 116 are respectively disposed in the valve housing 110, a valve core 520 is clamped, slidably, and sealingly mounted in the valve cavity 111, and the water inlet 116 is closed when the valve core 520 is in an initial state, so that the valve cavity 111 is disconnected from the pressure measuring cavity 112;

the water inlet hole 116 communicates the valve cavity 111 with the pressure measuring cavity 112, the pressure measuring cavity 112 communicates with one end of the water inlet pipe 420, and the other end of the water inlet pipe 420 is connected with the water pressure gauge 210 in series and then communicates with an external water source; the signal end of the water pressure meter 210 is in communication connection with the signal end of a PLC, the PLC is installed in an electrical box 250, the electrical box 250 is installed in an outer cover inner cavity 131, the outer cover inner cavity 131 is arranged in an outer cover 130, and the outer cover 130 is fixed on the valve casing 110;

the pressure measuring cavity 112 is further communicated with one end of the pressure relief cavity 121 and one end of the drainage channel 113 respectively, the pressure relief cavity 121 is arranged in the pressure relief shell 120, the pressure relief shell 120 is fixed on the valve housing 110, the pressure relief cavity 121 is internally provided with a pressure relief valve core 510 in a clamping, sealing and slidable manner, a pressure relief spring 310 is arranged between the pressure relief valve core 510 and the closed end of the pressure relief cavity 121, and the pressure relief cavity 121 is communicated with one end of the pressure relief pipe 410. In the initial state, the pressure relief pipe 410 and the pressure relief cavity 121 are sealed and isolated by the pressure relief valve core 510. When the water pressure in the pressure measuring cavity 112 is too high, the water pressure drives the pressure relief valve core to overcome the elastic force of the pressure relief spring to move upwards until the pressure relief pipe is communicated with the pressure relief cavity 121, so that the pressure can be relieved, and the function of the pressure relief valve is also realized.

The parts of the valve cavity 111 on both sides of the valve core 520 are respectively communicated with one ends of a first water outlet pipe 431 and a second water outlet pipe 432, the other ends of the first water outlet pipe 431 and the second water outlet pipe 432 are respectively connected with a first flow meter 221 and a second flow meter 222 in series and then are connected out, and the first flow meter 221 and the second flow meter 222 are respectively used for detecting water flow in the first water outlet pipe 431 and the second water outlet pipe 432. When the water inlet valve is used, the valve core 520 moves in the valve cavity to enable one of the water inlet holes 116 to be communicated with the first water outlet pipe 431 and the second water outlet pipe 432. This now functions as a reversing valve. The different assembly areas of the valve core 520 and the water inlet hole 116 can control the communication area of the water inlet hole 116 and the first water outlet pipe 431 or the second water outlet pipe 432, thereby playing the role of a throttle valve. The valve core can play a role of a stop valve by controlling the on-off of the water inlet hole 116 and the valve cavity.

The valve core is assembled and fixed with one end of the valve rod 530, the other end of the valve rod 530 respectively penetrates through the valve cavity 111, penetrates out of the sealing groove 114 and the detection groove 115 and then enters the inner cavity 131 of the outer cover, a tooth groove 531 is arranged at the end, and the tooth groove 531 forms a rack on the valve rod 530; the tooth grooves 531 can be in meshing transmission with the gear 820, the gear 820 is fixed on the gear shaft 440, the gear shaft 440 is connected with an output shaft of the motor 260 through a coupler, and the motor can drive the gear to rotate circumferentially after being electrified;

the tooth groove 531 is further in clamping assembly with the clamping block 720 so as to limit the axial movement of the valve rod, the clamping block 720 is slidably mounted in the locking box 140, the locking box 140 is fixed on the inner wall of the inner cavity 131 of the outer cover, the clamping block 720 is fixed at one end of the telescopic shaft 231, the other end of the telescopic shaft 231 is sleeved with the clamping spring 710 and penetrates through the locking box 140 to be mounted in the electromagnet 230, and the electromagnet 230 is powered on and then can drive the telescopic shaft 231 to move axially to overcome the elastic force of the clamping spring 710;

the electric connection end of the electromagnet 230 is in conductive connection with a movable contact of the contactor, the contacted static contacts are respectively in conductive connection with a power supply, and the control end of the contactor is respectively in communication connection with the signal end of the PLC; therefore, the start and stop of the electromagnet 230 can be controlled by the PLC. The motor 260 is a stepping motor or a servo motor, and is driven by a motor driver, and a control end of the motor driver is in communication connection with a signal end of the PLC, so that the running state of the motor, such as a rotation angle, power, forward and reverse rotation and the like, can be controlled by the PLC.

One end of the valve rod 530, which is arranged in the inner cavity 131 of the outer cover, is fixedly assembled with the pull rope 241 of the pull rope displacement sensor 240, the pull rope 240 is adjusted to be in a parallel state with the valve rod 530 through a guide wheel 810, the guide wheel is circumferentially and rotatably arranged on a guide shaft 450, the guide shaft 450 is circumferentially and rotatably assembled with the outer cover, and the gear shaft is also circumferentially and rotatably assembled with the outer cover.

Install sealing washer 610 in the seal groove 114, the inside cavity of sealing washer 610 and the inside and drainage channel 113 other end intercommunication of sealing washer to introduce sealing washer 610 with high-pressure rivers in so that the sealing washer pastes tightly with the valve rod, thereby increase sealed effect.

The detection groove 115 is internally provided with an air bag 910, a water absorption bag 920, a partition plate 550, a trigger plate 540 and a microswitch 270, the water absorption bag 920 is sleeved on the valve rod 530, the air bag 910 is sleeved outside the water absorption bag 920, an air bag bulge 911 is arranged on the air bag 910, the air bag bulge 911 penetrates through the partition plate 550 and then is fixedly assembled with the trigger plate 540, the partition plate 550 is fixed in the detection groove 115, the trigger plate 540 can slide in the detection groove 115, the trigger plate 540 is opposite to a trigger end of the microswitch 270, and a signal end of the microswitch 270 is in communication connection with a signal end of a PLC;

the water absorption bag 920 is filled with high water absorption resin 930, and the water absorption bag 920 is made of high water absorption material, such as water absorption cloth; the airbag 910 is made of a high-elasticity soft elastic material, and the airbag 910 is filled with high-pressure gas.

Once water enters the detection groove 115, the water-absorbing resin absorbs a large amount of water, so that the air bag 910 is expanded and extruded, high-pressure gas in the air bag enters the air bag protrusion 911, the air bag protrusion 911 is driven to extend, the air bag protrusion drives the trigger plate to move downwards until the micro switch is triggered, the micro switch inputs a signal to the PLC, the PLC judges that the detection groove leaks water, and a prompt instruction is sent according to a preset program.

Preferably, a limit plate 560 is further installed at the detection groove 115 beside the micro switch 270, and a limit plate 561 is used for limiting the maximum position of the trigger plate moving downwards, so as to prevent the micro switch from being crushed.

When the valve core needs to be adjusted, the PLC controls the contactor to be started, the electromagnet is electrified to drive the telescopic shaft and the clamping block to move towards the direction far away from the valve rod, and therefore the clamping of the clamping block on the valve rod is relieved; and then the motor is started, the valve rod is driven to axially move by meshing the gear and the tooth groove, and the valve rod drives the valve core to move so as to switch the communication between the first water outlet pipe 431 and the second water outlet pipe 432 and the water inlet hole or adjust the size of the communication section between the water inlet hole and the valve cavity. And the valve rod can feed back displacement information to the pull rope displacement sensor when moving, and the pull rope displacement sensor inputs signals into the PLC in real time, so that the position of the valve core is judged. The signal ends of the flow meter and the water pressure meter are connected with the PLC.

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. The utility model provides a combination solenoid valve, includes the valve casing, characterized by: a valve cavity, a pressure measuring cavity, a drainage channel, a sealing groove, a detection groove and a water inlet hole are respectively arranged in the valve shell, a valve core is clamped, slidably and hermetically arranged in the valve cavity, and the water inlet hole is sealed when the valve core is in an initial state; the pressure measuring cavity is communicated with one end of the water inlet pipe and is also respectively communicated with the pressure relief cavity and one end of the drainage channel, the pressure relief cavity is arranged in the pressure relief shell, the pressure relief shell is fixed on the valve shell, a pressure relief valve core is clamped, sealed and slidably arranged in the pressure relief cavity, a pressure relief spring is arranged between the pressure relief valve core and the closed end of the pressure relief cavity, and the pressure relief cavity is communicated with one end of the pressure relief pipe;

2. The combination solenoid valve as set forth in claim 1 wherein: the other end of the water inlet pipe is connected with a water pressure meter in series and then is communicated with an external water source; the signal end of the water pressure meter is in communication connection with the signal end of the PLC, the PLC is installed in the electrical box, the electrical box is installed in the outer cover inner cavity, the outer cover inner cavity is arranged in the outer cover, and the outer cover is fixed on the valve shell.

3. The combination solenoid valve as set forth in claim 1 wherein: in the initial state, the pressure relief pipe and the pressure relief cavity are sealed and separated through the pressure relief valve core.

4. A combination solenoid valve according to claim 1 or 2 wherein: the valve core is fixedly assembled with one end of the valve rod, the other end of the valve rod penetrates through the valve cavity, penetrates out of the sealing groove and the detection groove and then enters the inner cavity of the outer cover, a tooth groove is formed in the end of the valve rod, and a rack is formed on the valve rod by the tooth groove; and the tooth grooves are in meshing transmission with the gears, the gears are fixed on the gear shafts, and the gear shafts are connected with the output shafts of the motors.

5. The combination solenoid valve as set forth in claim 4 wherein: the tooth socket is also in clamping assembly with a clamping block, the clamping block is slidably mounted in a locking box, the locking box is fixed on the inner wall of an inner cavity of the outer cover, the clamping block is fixed at one end of the telescopic shaft, and the other end of the telescopic shaft is sleeved with a clamping spring and penetrates through the locking box to be mounted in the electromagnet; the power connection end of the electromagnet is in conductive connection with the movable contact of the contactor, the contacted static contacts are in conductive connection with the power supply respectively, and the control end of the contactor is in communication connection with the signal end of the PLC respectively.

6. The combination solenoid valve as set forth in claim 4 wherein: one end of the valve rod, which is arranged in the inner cavity of the outer cover, is assembled and fixed with a pull rope of the pull rope displacement sensor, the pull rope is adjusted to be in a parallel state with the valve rod through a guide wheel, the guide wheel is arranged on a guide shaft in a circumferential rotating mode, the guide shaft and the outer cover are assembled in a circumferential rotating mode, and the gear shaft and the outer cover are also assembled in a circumferential rotating mode.

7. The combination solenoid valve as set forth in claim 1 wherein: and a sealing ring is arranged in the sealing groove, the sealing ring is hollow inside, and the inside of the sealing ring is communicated with the other end of the drainage channel.

8. The combination solenoid valve as set forth in claim 1 wherein: the detection groove is internally provided with an air bag, a water absorption bag, a partition plate, a trigger plate and a microswitch, the water absorption bag is sleeved on the valve rod, the air bag is sleeved outside the water absorption bag, an air bag protrusion is arranged on the air bag, the air bag protrusion penetrates through the partition plate and then is assembled and fixed with the trigger plate, the partition plate is fixed in the detection groove, the trigger plate can slide in the detection groove, the trigger plate is just opposite to the trigger end of the microswitch, and the signal end of the microswitch is in communication connection with the signal end of the PLC.

9. The combination solenoid valve as set forth in claim 8 wherein: the water absorption bag is filled with high-water-absorption resin and is made of high-water-absorption materials; the air bag is made of a high-elasticity soft elastic material, and high-pressure gas is filled in the air bag.

10. The combination solenoid valve as set forth in claim 8 wherein: the detection groove is located beside the microswitch and is also provided with a limiting plate, and the limiting plate is used for limiting the maximum position of the trigger plate moving towards the microswitch.