Novel pneumatic angle seat adjusting valve

Abstract

A novel pneumatic angle seat regulating valve belongs to the technical field of valves and comprises a pneumatic angle seat regulating valve body, an electromagnetic valve, a pressure sensor, a gas input monitoring circuit and a fluid output monitoring circuit. A connecting pipe is arranged at the upper end of a pneumatic angle seat adjusting valve body, the other end of the connecting pipe is connected with one ends of two electromagnetic valves and an air inlet end of a first air pressure sensor in parallel, the other end of one electromagnetic valve is connected with an air compressor, and an air inlet pipe of a second air pressure sensor is connected with the upper end of a valve body output pipe of the pneumatic angle seat adjusting valve body. And the power supply module, the power supply switch, the gas input monitoring circuit and the fluid output monitoring circuit are arranged in the element box and are electrically connected. The air inlet valve is closed after the amount of air entering the valve body is enough, a worker is prompted through light, accurate control over fluid input and output is guaranteed, in the fluid conveying process, when the amount of fluid at the output end becomes small due to air leakage, an alarm can be given in time to prompt the worker to conduct maintenance, and convenience is brought to the worker.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve equipment field, especially a new type pneumatic angle seat regulating valve. BACKGROUND

[0002] Pneumatic angle seat regulating valve is a kind of industrial automation control equipment, it is mainly composed of pneumatic actuator, valve body and valve core, pneumatic actuator accepts the compressed air signal from the output of matched control mechanism, compressed air is pushed by piston and push rod to push valve core to move up and down in valve body (compressed air pushes piston and valve core to move downward, and the opening degree of valve port becomes small, when the amount of input compressed air is less and pressure is low, under the internal spring elastic reset force, valve core moves upward, and the opening degree of valve port becomes small), to change the opening degree of valve port, realize the regulation of the flow, pressure and other parameters of medium in pipeline.

[0003] Although the existing pneumatic angle seat regulating valve meets the use needs to some extent, but there are still some technical defects due to the limitation of structure. Specifically, when adjusting the amount of compressed air entering the upper end of piston of valve body, the staff needs to visually observe the numbers of air pressure gauge matched with valve body (the higher the pressure of air pressure gauge, the greater the amount of air entering the valve body, and the greater the opening degree of valve port, and vice versa), which will bring some inconvenience to the staff. In addition, it does not have the pressure (flow rate) monitoring function of output end fluid, when the amount of gas at the upper end of piston is reduced and the opening degree of valve port is reduced due to various reasons (such as wear of piston valve body and poor air tightness), the staff cannot understand the specific situation when they do not actively observe the pressure gauge of output end, which causes adverse effects on accurate control of output of fluid through pneumatic angle seat regulating valve. UTILITY MODEL CONTENTS

[0004] In order to overcome the disadvantages of the existing pneumatic angle seat regulating valve due to the limitation of structure as described in the background art, the utility model provides a new type pneumatic angle seat regulating valve based on the body of pneumatic angle seat regulating valve, which can close the air inlet valve after enough gas enters the piston and the valve body under the joint action of related mechanisms, and prompt the staff through light, and when the amount of fluid at the output end is reduced due to leakage of piston and other reasons during the process of conveying fluid, the staff can be prompted to repair in time, which brings convenience to the staff and ensures accurate control of fluid output.

[0005] The technical scheme adopted by the utility model to solve its technical problems is:

[0006] The novel pneumatic angle seat regulating valve comprises a pneumatic angle seat regulating valve body, an electromagnetic valve, a gas pressure sensor, a four-way pipe, and further comprises a gas input monitoring circuit and a fluid output monitoring circuit; a connecting pipe is mounted on one side of the upper end of the valve body of the pneumatic angle seat regulating valve, the other end of the connecting pipe and the first end of the four-way pipe are mounted together, there are at least two electromagnetic valves and at least two gas pressure sensors, the first end of the two electromagnetic valves and the gas inlet end of the first gas pressure sensor are mounted together with the other three ends of the four-way pipe, the other end of one of the electromagnetic valves is connected with the gas storage tank of an air compressor, and the gas inlet pipe of the second gas pressure sensor is mounted together with one side of the valve body output pipe of the pneumatic angle seat regulating valve body; the gas input monitoring circuit and the fluid output monitoring circuit are mounted in an element box, the power output end of the gas input monitoring circuit is electrically connected with the power input end of the first electromagnetic valve, and the signal input ends of the gas input monitoring circuit and the fluid output monitoring circuit are respectively electrically connected with the signal output ends of the two gas pressure sensors.

[0007] Further, the electromagnetic valve is a normally closed valve core electromagnetic valve.

[0008] Further, the gas input monitoring circuit comprises an adjustable resistor, a resistor, a triode, a relay, an indicator light, the positive power input end of the relay is connected with the control power input end, one end of the adjustable resistor is connected with one end of the first resistor and one end of the second resistor, the other end of the second resistor is connected with the base of the triode, the collector of the triode is connected with the negative power input end of the relay, the other end of the first resistor is connected with the emitter of the triode and the negative power input end of the indicator light, and the normally open contact end of the relay is connected with the negative power input end of the indicator light.

[0009] Further, the fluid output monitoring circuit comprises an adjustable resistor, a resistor, a triode, a relay and an alarm, the positive power input end of the relay is connected with the control power input end, one end of the adjustable resistor is connected with one end of the first resistor and one end of the second resistor, the other end of the second resistor is connected with the base of the triode, the collector of the triode is connected with the negative power input end of the relay, the other end of the first resistor is connected with the emitter of the triode and the negative power input end of the alarm, and the normally closed contact end of the relay is connected with the positive power input end of the alarm.

[0010] Compared with the prior art, the utility model has the advantages that: based on the pneumatic angle seat regulating valve body, in application, the gas input monitoring circuit can close the air inlet valve after the gas amount in the valve body is enough, and the staff is prompted through light, the accurate control of fluid input and output is ensured, when the output fluid amount is reduced due to leakage of the piston and the like in the process of conveying fluid, the fluid output monitoring circuit can timely alarm and prompt the staff to overhaul, and the staff is facilitated, and the utility model has good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0011] The utility model will be further explained in connection with the drawings and embodiments.

[0012] Figure 1 It is the whole structure schematic diagram of the utility model.

[0013] Figure 2 It is the circuit diagram of the utility model. Specific implementation

[0014] Figure 1 、 2 As shown in the figure, the novel pneumatic angle seat regulating valve includes a pneumatic angle seat regulating valve body 1, a power module K1, electromagnetic valves DC1 and DC2, power switches S1 and S2, gas pressure sensors K2 and K3, and further includes a gas input monitoring circuit 2 and a fluid output monitoring circuit 3. A connecting pipe 101 is welded to the right side of the upper end of the valve body of the pneumatic angle seat regulating valve, and the other end of the connecting pipe 101 is threadedly connected to the first end of a four-way pipe 4. There are two electromagnetic valves and two gas pressure sensors. The inlet end of the first gas pressure sensor K2 and the other three ends of the four-way pipe are respectively connected to one end of the two electromagnetic valves DC1 and DC2. The other end of one of the electromagnetic valves DC2 is connected to the exhaust pipe of the air compressor storage tank through a pipeline. The upper end of the valve body output pipe of the pneumatic angle seat regulating valve body has a wire hole that is in communication with the output pipe. The gas inlet pipe of the second gas pressure sensor K3 is threadedly connected to the opening at the upper end of the output pipe. The power module K1, the power switches S1 and S2, the gas input monitoring circuit 2, and the fluid output monitoring circuit 3 are installed on the circuit board in the component box 5, and the component box 5 is installed on the outside end of the output pipe.

[0015] Figure 1 、 2As shown in the figure, solenoid valve DC1, DC2 is a normally closed valve electromagnetic valve. Gas input monitoring circuit includes adjustable resistance RP1, resistance R1 and R2, triode T1 and relay J1, indicator H, relay J1 positive power input terminal and control power input terminal connection, adjustable resistance RP1 one end and the first resistance R1 one end, the second resistance R2 one end connection, the second resistance R2 the other end and triode T1 base connection, triode T1 collector and relay J1 negative power input terminal connection, the first resistance R1 the other end and triode T1 emitter, indicator H negative power input terminal connection, the positive power input terminal of indicator H and relay J1 normally open contact end connection. Fluid output monitoring circuit includes adjustable resistance RP2, resistance R3 and R4, triode T2 and relay J2, alarm B, relay J2 positive power input terminal and control power input terminal connection, adjustable resistance RP2 one end and the first resistance R3 one end, the second resistance R4 one end connection, the second resistance R4 the other end and triode T2 base connection, triode T2 collector and relay J2 negative power input terminal connection, the first resistance R3 the other end and triode T2 emitter, alarm B negative power input terminal connection, relay J2 normally closed contact end and alarm B positive power input terminal connection.

[0016] Figure 1 、 2 As shown in the figure, the power input terminal 1 and 2 feet of power module K1 and the two poles of AC 220V power supply are connected through wires respectively, the power output terminal 3 and 4 feet of power module K1 and the power input terminal 1 and 2 feet of two air pressure sensors K2, K3, the power input terminal of gas input monitoring circuit relay J1 control power input terminal and triode T1 emitter, the power input terminal of fluid output monitoring circuit relay J2 positive power input terminal and triode T2 emitter, the power input terminal of power switch S1 are connected through wires respectively, the power output terminal of gas input monitoring circuit relay J1 normally closed contact end and the power input terminal of power switch S2 are connected through wires; the power output terminal of power switch S1 and the 4 feet of power module K1 and the power input terminal of solenoid valve DC1 are connected through wires respectively, the power output terminal of power switch S2 and the 4 feet of power module K1 and the power input terminal of solenoid valve DC2 are connected through wires respectively, the signal input terminal of adjustable resistance RP1 of gas input monitoring circuit, the signal input terminal of adjustable resistance RP2 of fluid output monitoring circuit and the signal output terminal 3 feet of two air pressure sensors K2, K3 are connected through wires respectively.

[0017] Figure 1 、 2As shown, the AC 220V power supply enters the power input end of the power module K1, and the power output end of the power module K1 outputs stable DC 12V power supply into the power input end of the prompt circuit, the gas input monitoring circuit, the two gas pressure sensors K2 and K3, and the power switch S1. When the worker adjusts the resistance value of the adjustable resistor RP1 (that is, sets the amount of gas entering the valve body of the pneumatic angle seat regulating valve body 1), turns on the power switch S2, and the 12V power supply enters the power input end of the electromagnetic valve DC2 through the relay J1 control power input end and normally closed contact end, the contact is closed, the electromagnetic valve DC2 is powered on, and the valve core is opened. In this way, the compressed air in the air compressor gas tank enters the valve body of the angle seat regulating valve body 1, the compressed air pushes the piston and the push rod of the angle seat regulating valve body 1, and the valve core moves downward in the valve body (the compressed air pushes the piston and the valve core to move downward, the opening degree of the valve port of the angle seat regulating valve body 1 becomes smaller; according to the need, a part of the compressed air in the valve body is discharged when the power switch S1 is subsequently turned on and the electromagnetic valve DC1 is powered on, the valve core moves upward under the elastic restoring force of the spring in the angle seat regulating valve body 1, and the opening degree of the valve port becomes smaller), so as to change the opening degree of the valve port and realize the adjustment of the flow, pressure and other parameters of the medium in the pipeline. Specifically, when the amount of compressed air entering the valve body does not reach the amount set by the adjustable resistor RP1, the pressure in the valve body is relatively low, the voltage signal output by the 3-pin of the pressure sensor K2 is relatively low, the voltage signal is divided by the adjustable resistor RP1 and the resistor R1, the voltage signal is limited by the resistor R2, and the voltage signal is input into the base of the transistor T1. When the voltage signal is lower than 0.7V, the transistor T1 will not be turned on, the relay J1 will continue to be de-energized to control the power input end and the normally closed contact end to be closed. In this way, the electromagnetic valve DC2 continues to be powered on, and the air continues to enter the valve body. When the amount of compressed air entering the valve body reaches the amount set by the adjustable resistor RP1, the pressure in the valve body is relatively high, the voltage signal output by the 3-pin of the pressure sensor K2 is relatively high, the voltage signal is divided by the adjustable resistor RP1 and the resistor R1, the voltage signal is limited by the resistor R2, and the voltage signal is input into the base of the transistor T1. When the voltage signal is higher than 0.7V, the transistor T1 will be turned on, the collector of the transistor T1 will output a low voltage to the negative power input end of the relay J1, the relay J1 will be energized to control the power input end and the normally closed contact end to be open, and the power input end and the normally open contact end to be closed. In this way, the electromagnetic valve DC2 is de-energized, the air no longer enters the valve body, and the prompt lamp H emits light to prompt the worker that the amount of gas entering the valve body is sufficient, and the power switch S2 can be turned off.

[0018] Figure 1 、 2When the output fluid volume of the angle seat regulating valve body 1 is enough (that is, the piston stays at the set position), the voltage signal output by the 3-pin of the pressure sensor K3 is relatively high, the voltage signal is divided by the adjustable resistor RP2 and the resistor R3, and the voltage signal is limited by the resistor R4 and enters the base of the transistor T2, which is higher than 0.7V. The transistor T2 is turned on, the relay J2 is powered, the control power input end and the normally closed contact end are open, the buzzer B does not sound, and the working of the angle seat regulating valve body 1 is normal.

[0019] Figure 1 、 2As shown, through the above, the new gas input monitoring circuit can close the inlet valve after the gas in the valve body is enough, and prompt the staff through the light, which ensures the accurate control of the fluid input and output, and when the fluid output monitoring circuit can timely alarm and prompt the staff to repair when the piston leaks and causes the fluid volume in the output end to be less during the fluid conveying process, which brings convenience to the staff. The model of the relay J1 and J2 is DC12V; the model of the triode T1 and T2 is 9013 (NPN); the buzzer B is an active continuous sound alarm of MF12V; the resistance R1, R2, R3 and R4 are 10K, 47K, 10K and 47K respectively; the electromagnetic valve DC1 and DC2 are normally closed valve core electromagnetic valves; the power module K1 is an AC220V to DC12V switching power module product; the resistance value of the adjustable resistance RP1 and RP2 is 470K (the handle is located outside the end of the component box), and when the resistance value of the adjustable resistance RP1 and RP2 is relatively large, the voltage division between the resistance R1 and R3 is large, so that the relay J1 is only energized and attracted when the gas pressure in the valve body is relatively high, and the relay J2 is only energized when the fluid pressure in the output end is relatively high, that is, the initial pressure of the new type is set to be relatively high, and when the resistance value of the adjustable resistance RP1 and RP2 is relatively low, the voltage division between the resistance R1 and R2 is small, so that the relay J1 is energized and attracted when the gas pressure in the valve body is relatively low, and the relay J2 is energized when the fluid pressure in the output end is relatively low, that is, the initial pressure of the new type is set to be relatively low; the indicating lamp H is a 12V, 1W red indicating lamp; the handles of the power switches S1 and S2 and the light emitting surface of the indicating lamp H are respectively located outside the three holes at the front end of the component box; the pressure sensor K2 and the pressure sensor K3 are silicon pressure transmitters of PCM300, which have two power input ends and one signal output end, and the larger the detected pressure, the higher the output voltage signal, and vice versa.

[0020] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model.

[0021] Furthermore, it should be understood that, although the specification is described in terms of embodiments, the embodiments do not include only singular implementations, but that the specification can include plural implementations of individual systems, methods, articles, or apparatuses. It should also be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting.

Claims

1. A new type of pneumatic angle seat regulating valve, comprising a pneumatic angle seat regulating valve body, a solenoid valve, a gas pressure sensor, a four-way pipe, characterized in that, The pneumatic angular seat regulating valve is provided with a connecting pipe on one side of the upper end of the valve body, the other end of the connecting pipe is connected with the first end of a four-way pipe, and each of the solenoid valve and the air pressure sensor has at least two. One end of the two solenoid valves and the air inlet end of the first air pressure sensor are connected with the other three ends of the four-way pipe, respectively. The other end of one of the solenoid valves is connected with the air tank of the air compressor, and the air inlet pipe of the second air pressure sensor is connected with one side of the valve body output pipe of the pneumatic angular seat regulating valve. The gas input monitoring circuit and the fluid output monitoring circuit are installed in the element box. The power output end of the gas input monitoring circuit is electrically connected with the power input end of the first solenoid valve. The signal input ends of the gas input monitoring circuit and the fluid output monitoring circuit are electrically connected with the signal output ends of the two air pressure sensors, respectively.

2. The new type of aerodynamic angle seat regulating valve according to claim 1, characterized in that, The solenoid valve is a normally closed valve core solenoid valve.

3. The new type of aerodynamic angle seat regulating valve according to claim 1, characterized in that, The gas input monitoring circuit comprises an adjustable resistor, a resistor, a triode, a relay, an indicating lamp and the like which are electrically connected. The positive power input end and the control power input end of the relay are connected. One end of the adjustable resistor is connected with one end of the first resistor and one end of the second resistor. The other end of the second resistor is connected with the base of the triode. The collector of the triode is connected with the negative power input end of the relay. The other end of the first resistor is connected with the emitter of the triode and the negative power input end of the indicating lamp. The normally open contact end of the relay is connected with the negative power input end of the indicating lamp.

4. The new generation of aerodynamic angle seat regulating valve according to claim 1, characterized in that, The fluid output monitoring circuit comprises an adjustable resistor, a resistor, a triode, a relay, an alarm and the like which are electrically connected. The positive power input end and the control power input end of the relay are connected. One end of the adjustable resistor is connected with one end of the first resistor and one end of the second resistor. The other end of the second resistor is connected with the base of the triode. The collector of the triode is connected with the negative power input end of the relay. The other end of the first resistor is connected with the emitter of the triode and the negative power input end of the alarm. The normally closed contact end of the relay is connected with the positive power input end of the alarm.

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