Electromagnetic valve group protection device

Abstract

The utility model relates to an electromagnetic valve group protection device which comprises a confluence plate, a breather pipe, a protection device body and at least one silencer, the electromagnetic valve group protection device is simple in structure, and a pressure detection switch and an air leakage pipeline are installed on a pipeline of an electromagnetic valve group. When the pressure detection switch detects that the pressure in the pipeline reaches a set value, the buzzer gives an alarm, and meanwhile, the electromagnetic valve on the air leakage pipeline is opened, so that air in the pipeline is discharged through the air leakage pipeline, and other pneumatic elements on the electromagnetic valve group are prevented from acting.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valve groups, in particular to a electromagnetic valve group protection device. Background Art

[0002] The solenoid valve group is an industrial control device whose main function is to use electromagnetic force to control the direction, flow, speed and other parameters of the fluid. The solenoid valve group is composed of multiple solenoid valves and can be applied to different industrial control systems. The core components of the solenoid valve group are one or more solenoid valves, which control the opening and closing of the valves through the magnetic field generated by the electromagnetic coil.

[0003] In automation equipment, when the air source (compressed air) is relatively single, and there are many solenoid valves working at the same time, it is necessary to disperse the single air source to multiple solenoid valves. The solenoid valve group is installed on the solenoid valve manifold to achieve this function. There are at least two channels running through the manifold, namely the air inlet and the air outlet. The air at the air inlet is supplied by the air source. After being distributed by the manifold, the air coming out of the air outlet is connected to the components (such as solenoid valves) in the complete set of equipment that need air through the connection of pneumatic hoses, pneumatic connectors and other accessories. In this way, a small amount of air source can be used to supply multiple pneumatic components at the same time.

[0004] When the manifold is working, the silencer function is realized by the muffler. If the muffler is used for a long time or fails, the muffler will be blocked, so that the air outlet cannot discharge air normally, and the gas flows into the through pipe, causing other pneumatic components on the solenoid valve group to move, causing the equipment to malfunction during use.

[0005] In summary, a solenoid valve group protection device is needed that can promptly alarm when the muffler is blocked. Summary of the invention

[0006] In order to solve the problem that the solenoid valve group is blocked in the muffler, the air outlet cannot discharge air normally, the gas flows into the through pipe, and causes the action of other pneumatic components on the solenoid valve group, causing malfunctions when the equipment is used, the utility model provides a solenoid valve group protection device. The solenoid valve group protection device has a simple structure. A pressure detection switch and an air release pipe are installed on the pipe of the solenoid valve group. When the pressure detection switch detects that the pressure in the pipe reaches a set value, a buzzer alarms and the solenoid valve on the air release pipe opens at the same time, so that the gas in the pipe is discharged through the air release pipe, thereby avoiding the action of other pneumatic components on the solenoid valve group.

[0007] In order to achieve the above object, the technical solution of the utility model is as follows:

[0008] A solenoid valve group protection device, the solenoid valve group protection device includes a manifold, a vent pipe, a protection device and at least one muffler, the manifold includes an air inlet pipe, a base, at least one pneumatic valve, at least one exhaust hole A and at least one exhaust hole B, the vent pipe includes a first vent pipe and a second vent pipe, the protection device includes a first pressure detection switch, a first solenoid valve, a first exhaust pipe, a second pressure detection switch, a second solenoid valve and a second exhaust pipe, the muffler includes a first muffler, a second muffler, a third muffler and a fourth muffler, the first vent pipe and the second vent pipe pass through the base, the air inlet pipe is connected to one end of the base, the pneumatic valve is connected to the base, the exhaust hole A and the exhaust hole B are connected to the base, and the exhaust hole A and the exhaust hole B are connected to the base. The air hole B is arranged on the pneumatic valve, the exhaust hole A is connected to the second ventilation pipe, the exhaust hole B is connected to the first ventilation pipe, a second muffler is arranged at one end of the first ventilation pipe close to the intake pipe, a third muffler is arranged at the other end of the first ventilation pipe, a first muffler is arranged at one end of the second ventilation pipe close to the intake pipe, a fourth muffler is arranged at the other end of the second ventilation pipe, the first pressure detection switch and the first exhaust pipe are arranged in sequence on one end of the first ventilation pipe close to the third muffler, the second pressure detection switch and the second exhaust pipe are arranged in sequence on one end of the second ventilation pipe close to the fourth muffler, the first solenoid valve is arranged on the first exhaust pipe, and the second solenoid valve is arranged on the second exhaust pipe.

[0009] Furthermore, the solenoid valve group protection device also includes a plurality of pneumatic valves, which are sequentially arranged on the base, a plurality of exhaust holes A are connected to the second ventilation pipe, and a plurality of exhaust holes B are connected to the first ventilation pipe.

[0010] The features of this utility model are mainly reflected in:

[0011] The utility model provides a solenoid valve group protection device, which has a simple structure. A pressure detection switch and an air leakage pipeline are installed on the pipeline of the solenoid valve group. When the pressure detection switch detects that the pressure in the pipeline reaches a set value, a buzzer alarms and the solenoid valve on the air leakage pipeline opens at the same time, so that the gas in the pipeline is discharged through the air leakage pipeline, thereby preventing other pneumatic components on the solenoid valve group from being actuated. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the electromagnetic valve group protection device of the utility model

[0013] Figure 2 This is the circuit diagram of the solenoid valve group protection device of the utility model

[0014] Among them, the figure markings are as follows: 1-intake pipe, 2-first muffler, 3-exhaust hole A, 4-exhaust hole B, 5-second muffler, 6-base, 7-pneumatic valve, 8-first ventilation pipe, 9 first pressure detection switch, 10-first solenoid valve, 11-first exhaust pipe, 12-second ventilation pipe, 13-second pressure detection switch, 14-second solenoid valve, 15-second exhaust pipe, 16-fourth muffler, 17-third muffler, 18-buzzer. DETAILED DESCRIPTION

[0015] The following will be combined with the accompanying drawings of the structural schematic diagram of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1-2As shown, a solenoid valve group protection device includes a manifold, a vent pipe, a protection device and at least one muffler. The manifold can realize a small amount of air source to supply multiple pneumatic components at the same time. The vent pipe can allow gas to pass through the manifold. When the muffler is blocked, the protection device can exhaust gas through the vent pipe after the pressure in the vent pipe increases to a set value, so as to avoid the pressure in the vent pipe increasing when the muffler is blocked, triggering the operation of other components connected to the vent pipe. The manifold includes an air inlet pipe 1, a base 6, at least one pneumatic valve 7, at least one exhaust hole A 3 and at least one exhaust hole B 4. The air inlet pipe 1 is connected to the compressed air and is the gas source. A plurality of pneumatic valves can be installed on the base 6. Different pneumatic valves can control different operating functions on the equipment. It can be realized that a compressed air source is used to supply multiple pneumatic components at the same time. The pneumatic valve uses the gas pressure to control the actuator to close or open the valve. The ventilation pipe includes a first ventilation pipe 8 and a second ventilation pipe 12. The protection device includes a first pressure detection switch 9, a first solenoid valve 10, a first air release pipe 11, a second pressure detection switch 13, a second solenoid valve 14 and a second air release pipe 15. The pressure detection switch It is used to detect the pressure value in the ventilation pipe. When the pressure detection switch detects the set pressure value, the solenoid valve is triggered to operate, the exhaust pipe is connected to the atmosphere, and the gas in the ventilation pipe is discharged through the exhaust pipe to avoid excessive pressure in the ventilation pipe, which triggers the malfunction of other pneumatic components connected to the ventilation pipe. The muffler includes a first muffler 2, a second muffler 5, a third muffler 17 and a fourth muffler 16. The first ventilation pipe 8 and the second ventilation pipe 12 pass through the base 6. The air inlet pipe 1 is connected to one end of the base 6. The pneumatic valve 7 is connected to the base 6. The exhaust hole A 3 and exhaust hole B 4 are arranged on the pneumatic valve 7, the exhaust hole A 3 is connected to the second ventilation pipe 12, the exhaust hole B 4 is connected to the first ventilation pipe 8, the first ventilation pipe 8 is provided with a second muffler 5 at one end close to the intake pipe 1, the other end of the first ventilation pipe 8 is provided with a third muffler 17, the second ventilation pipe 12 is provided with a first muffler 2 at one end close to the intake pipe 1, the other end of the second ventilation pipe 12 is provided with a fourth muffler 16, the first pressure detection switch 9 and the first air leakage pipe 11 are arranged in sequence on one end of the first ventilation pipe 8 close to the third muffler 17, the second pressure detection switch 13 and the second air leakage pipe 15 are arranged in sequence on one end of the second ventilation pipe 12 close to the fourth muffler 16, the first solenoid valve 10 is arranged on the first air leakage pipe 11, and the second solenoid valve 14 is arranged on the second air leakage pipe 15.

[0017] The solenoid valve group protection device also includes multiple pneumatic valves, which are arranged in sequence on the base 6. Multiple exhaust holes A are connected to the second ventilation pipe 12, and multiple exhaust holes B are connected to the first ventilation pipe 8. Different pneumatic valves can control different functions on the equipment.

[0018] The specific workflow is as follows:

[0019] Embodiment 1: The solenoid valve group in the dryer, the pneumatic valve 7 close to the air inlet pipe 1 controls the drying function of the dryer, and the pneumatic valve adjacent to the pneumatic valve 7 controls the function of purified water entering and exiting the dryer. When the dryer needs to use the drying function and the muffler is not blocked, the dryer operates normally. When the pneumatic valve 7 is not energized, compressed air enters the air inlet pipe 1, and the air inlet pipe 1 is connected with the exhaust hole A3. The gas enters the pneumatic valve from the exhaust hole A3 and is discharged from the exhaust hole B4, the first ventilation pipe 8 and the second muffler 5 in turn. When the pneumatic valve 7 is energized, the air inlet pipe 1 is connected with the exhaust hole B4, triggering the cylinder movement in the pneumatic valve 7, triggering the pneumatic valve 7 to start the drying function of the dryer, and the gas is discharged from the exhaust hole A3, the second ventilation pipe 12 and the first muffler 2 in turn. The pneumatic valve adjacent to the pneumatic valve 7 is not energized, and purified water will not enter the dryer.

[0020] When the equipment is used for a long time, dust or particles may clog the silencer. When the second silencer 5 and the third silencer 17 are clogged, when the pneumatic valve 7 is powered on, the air inlet pipe 1 is connected with the exhaust hole B 4, triggering the cylinder in the pneumatic valve 7 to move, triggering the pneumatic valve 7 to start the drying function of the dryer, and the gas is discharged from the exhaust hole A 3, the second ventilation pipe 12 and the first silencer 2 in sequence. The pneumatic valve adjacent to the pneumatic valve 7 is out of power, the air inlet pipe 1 is connected with the pneumatic valve exhaust hole A adjacent to the pneumatic valve 7, and the gas enters the pneumatic valve adjacent to the pneumatic valve 7 from the pneumatic valve exhaust hole A adjacent to the pneumatic valve 7, and is discharged from the pneumatic valve exhaust hole B adjacent to the pneumatic valve 7 in sequence. , the gas is discharged through the first ventilation pipe 8 and the second muffler 5, but because the second muffler 5 and the third muffler 17 are blocked, the gas cannot be discharged from the second muffler 5 and the third muffler 17, and the gas will gather in the first ventilation pipe 8 and cannot be discharged. When the gas pressure in the first ventilation pipe 8 is large enough to trigger the pneumatic valve adjacent to the pneumatic valve 7, even if the pneumatic valve adjacent to the pneumatic valve 7 has no power, the pneumatic valve adjacent to the pneumatic valve 7 will still be mistakenly started because the gas pressure for starting the pneumatic valve is reached, and purified water enters the dryer, causing the clothes in the dryer to get wet, and the dryer cannot dry the clothes.

[0021] If multiple pneumatic valves with different functions are installed on the solenoid valve group protection device, the multiple pneumatic valves will be activated because the muffler is blocked and the pressure in the ventilation pipe reaches the pressure that can trigger the pneumatic valve to start, resulting in the activation of multiple pneumatic valves with different functions, causing equipment failure.

[0022] After installing a protective device at one end of the first ventilation pipe 8 close to the third muffler 17, even if the second muffler 5 and the third muffler 17 are blocked, the pressure value of the first pressure detection switch 9 is set to a pressure value that is lower than the pressure value at which each pneumatic valve can operate. For example, the pressure value required for the operation of the pneumatic valve adjacent to the pneumatic valve 7 is 0.1 KPa, and the pressure value of the first pressure detection switch 9 is set to 0.09 Kpa. When the second muffler 5 and the third muffler 17 are blocked, the gas will gather in the first ventilation pipe 8. When the gas pressure in the first ventilation pipe 8 reaches 0.09 Kpa, the first pressure detection switch SB1 is closed, the first solenoid valve KM1 is energized, SKM1 is closed, the buzzer 18 alarms, the first solenoid valve 10 opens, the first vent pipe 11 is connected to the atmosphere, and the gas in the first ventilation pipe 8 is discharged, which will not trigger the pneumatic valve adjacent to the pneumatic valve 7 to malfunction. After the buzzer 18 alarms, the operator goes to the site to check the blockage condition of the muffler.

[0023] Multiple pneumatic valves are arranged on the solenoid valve group protection device, and the multiple pneumatic valves are arranged in sequence on the base 6. Multiple exhaust holes A are connected to the second ventilation pipe 12, and multiple exhaust holes B are connected to the first ventilation pipe 8. Different pneumatic valves can control different functions on the equipment. When the muffler is blocked, multiple pneumatic valves may be triggered to malfunction, causing the equipment to malfunction.

[0024] According to the above process, it can be prevented that the solenoid valve group is blocked in the muffler, the air outlet cannot discharge air normally, the gas flows into the through pipe, and causes the movement of other pneumatic components on the solenoid valve group, causing malfunctions when the equipment is used.

[0025] To sum up, the solenoid valve group protection device has a simple structure. By installing a pressure detection switch and an air release pipe on the pipe of the solenoid valve group, when the pressure detection switch detects that the pressure in the pipe reaches the set value, the buzzer alarms and the solenoid valve on the air release pipe opens, allowing the gas in the pipe to be discharged through the air release pipe, thereby preventing other pneumatic components on the solenoid valve group from operating.

[0026] It should be noted that the above is only a preferred embodiment of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments. Without departing from the spirit or basic features of the utility model, the utility model can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A solenoid valve group protection device, characterized in that: The electromagnetic valve group protection device comprises a manifold, a vent pipe, a protection device and at least one muffler. The manifold comprises an air inlet pipe (1), a base (6), at least one pneumatic valve (7), at least one exhaust hole A (3) and at least one exhaust hole B (4). The vent pipe comprises a first vent pipe (8) and a second vent pipe (12). The protection device comprises a first pressure detection switch (9), a first electromagnetic valve (10), a first exhaust pipe (11), a second pressure detection switch (13), a second electromagnetic valve (14) and a second exhaust pipe (15). The muffler comprises a first muffler (2), a second muffler (5), a third muffler (17) and a fourth muffler (16). The first vent pipe (8) and the second vent pipe (12) pass through the base (6). The air inlet pipe (1) is connected to one end of the base (6). The pneumatic valve (7) is connected to the base (6). The exhaust hole A (3) and the exhaust hole B (4) are arranged on the pneumatic valve ( 7), the exhaust hole A (3) is connected to the second ventilation pipe (12), the exhaust hole B (4) is connected to the first ventilation pipe (8), a second muffler (5) is arranged at one end of the first ventilation pipe (8) close to the intake pipe (1), a third muffler (17) is arranged at the other end of the first ventilation pipe (8), a first muffler (2) is arranged at one end of the second ventilation pipe (12) close to the intake pipe (1), a fourth muffler (16) is arranged at the other end of the second ventilation pipe (12), the first pressure detection switch (9) and the first exhaust pipe (11) are arranged in sequence on one end of the first ventilation pipe (8) close to the third muffler (17), the second pressure detection switch (13) and the second exhaust pipe (15) are arranged in sequence on one end of the second ventilation pipe (12) close to the fourth muffler (16), the first solenoid valve (10) is arranged on the first exhaust pipe (11), and the second solenoid valve (14) is arranged on the second exhaust pipe (15).

2. The solenoid valve group protection device according to claim 1, characterized in that: The solenoid valve group protection device also includes a plurality of pneumatic valves, which are arranged in sequence on the base (6); the plurality of exhaust holes A are connected to the second ventilation pipe (12); and the plurality of exhaust holes B are connected to the first ventilation pipe (8).

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