Novel pneumatic right-angle valve

Abstract

A novel pneumatic right-angle valve belongs to the technical field of valve equipment and comprises a pneumatic right-angle valve body, an electromagnetic valve, an air compressor, an electromagnet, a linear adjustable resistor, a voltmeter and a control circuit. One ends of the two electromagnetic valves are respectively connected with two connecting pipes of the pneumatic right-angle valve body, and the other ends of the two electromagnetic valves are respectively connected with an air storage tank of an air compressor; a connecting base and a fixing plate are installed at the two side ends of a connecting shaft of the movable right-angle valve body respectively. The side end of a base body of the electromagnet is fixedly installed on one side in a shell of the connecting shaft, and a contact plate is installed at the side end of an armature rod of the electromagnet. The linear adjustable resistor is vertically distributed and mounted on the other side in the shell of the connecting shaft; an adjusting handle of the linear adjustable resistor and the side end of the connecting seat are mounted together; and the voltmeter and the control circuit are arranged in the element box and are electrically connected. According to the novel pneumatic right-angle valve, after the pneumatic right-angle valve body reaches the medium flow set by a worker, the connecting shaft can be automatically locked, and the effect of accurately controlling the medium flow is guaranteed as much as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve equipment technical field, especially a novel pneumatic right angle valve. BACKGROUND

[0002] Pneumatic right angle valve is a common industrial control valve, and the pneumatic right angle valve usually adopts V-shaped valve body design, has the characteristics of large rated flow coefficient, large adjustable ratio, good sealing effect, sensitive regulating performance, etc., and the volume is small, can be installed vertically, and is suitable for controlling gas, steam, liquid and other media. The main structure of the pneumatic right angle valve includes a valve seat, a valve core, and a pneumatic device, the valve core is vertically located in the valve seat, the pneumatic device includes a connecting shaft, a diaphragm and a shell, the diaphragm is sealed in the middle part of the shell, the upper end of the connecting shaft and the lower middle part of the diaphragm are installed together, and the upper end of the shell has two air inlet pipes on the side. In the specific working process, the pressure of the compressed air entering the shell is adjusted to control the flow of the medium output from the valve seat, when the upper end of the diaphragm is driven by the compressed air through the connecting shaft to drive the valve core to move downward, the opening degree of the flow passage in the valve seat is relatively small, and the flow of the liquid medium flowing from one end of the valve seat to the other end is relatively small, when the lower end of the diaphragm is driven by the compressed air through the connecting shaft to drive the valve core to move upward, the opening degree of the flow passage in the valve seat is relatively large, and the flow of the liquid medium flowing from one end of the valve seat to the other end is relatively large.

[0003] Although the existing pneumatic right angle valve meets the flow control needs of the fluid to some extent, it also has some disadvantages due to the structure. Specifically, since the staff adjusts the gas pressure entering the shell to achieve the purpose of adjusting the medium flow in the valve seat, this method has a problem that in extreme cases, when the diaphragm or the shell leaks, the air pressure acting on the diaphragm changes, the distance of the connecting shaft driving the valve core to move downward or upward changes, and then the flow of the liquid medium flowing from one end of the valve seat to the other end changes relatively small or large, which adversely affects the accurate control of the medium flow. Therefore, it is particularly necessary to provide a pneumatic right angle valve that can ensure accurate control of the input and output flow of the medium as much as possible. UTILITY MODEL CONTENTS

[0004] In order to overcome the disadvantages of the existing pneumatic right angle valve due to the structure, as described in the background art, the utility model provides a new pneumatic right angle valve based on the pneumatic right angle valve body, during operation, the relevant staff can control the distance of the connecting shaft driving the valve core to move along the valve seat, and can automatically lock the connecting shaft after reaching the set medium flow each time, so as to ensure accurate control of the medium flow as much as possible.

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

[0006] The utility model provides a new type pneumatic right angle valve, including pneumatic right angle valve body, solenoid valve, air compressor, electromagnet, linear adjustable resistance, voltmeter still have control circuit, the solenoid valve has at least two, two solenoid valve one end and the casing side end of pneumatic right angle valve body two only connecting pipes are connected respectively, and the other end of two solenoid valve and the gas holder of air compressor are connected respectively, the connecting axle both sides of pneumatic right angle valve body are installed with connecting seat, fixed plate respectively, the seat body side end of electromagnet is fixedly installed in the shell of connecting axle one side, and the armature rod side end of electromagnet is installed with contact plate, and linear adjustable resistance is vertically distributed and is installed in the shell of connecting axle other side, and the adjusting handle of linear adjustable resistance and connecting seat side end are installed together, the voltmeter, control circuit are installed in component box, and the power output end, signal output end of control circuit are electrically connected with the power input end of electromagnet, voltmeter respectively.

[0007] Further, the solenoid valve is a two-way solenoid valve.

[0008] Further, the fixed plate side end is installed with rubber brake plate.

[0009] Further, when the armature rod of the electromagnet is in the attraction state, the contact plate and the brake plate are spaced apart, and when the electromagnet loses power, the left side of the contact plate contacts the brake plate.

[0010] Further, the control circuit includes diodes, resistors, and an adjustable resistor connected thereto, with the negative poles of the two diodes connected, one end of the adjustable resistor connected to one end of the resistor.

[0011] Compared with the prior art, the utility model has the beneficial effects that: based on the pneumatic right angle valve body, during operation, relevant staff can control the distance of the valve core driven by the connecting shaft along the valve seat based on the voltage data displayed by the voltmeter, thereby achieving the purpose of controlling the opening and closing size of the valve core. After the medium flow rate set by the staff is reached each time, the electromagnet will lose power and automatically lock the connecting shaft. Even if the diaphragm or the shell of the pneumatic right angle valve body leaks, the distance of the valve core driven by the connecting shaft will not change, thereby ensuring the accurate control of the medium flow rate. Therefore, the utility model has good application prospects. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further described below in combination with the drawings and examples.

[0013] Figure 1 It is the overall structure schematic diagram of the utility model.

[0014] Figure 2 It is the local structure schematic diagram of the utility model.

[0015] Figure 3Circuit diagram of the utility model. DETAILED DESCRIPTION

[0016] Figure 1 、 2 , 3 as shown, the new pneumatic right angle valve, including pneumatic right angle valve body 1, power module A1, electromagnetic valve DC1 and DC2, air compressor (not shown in the drawing), power switch S1 and S2, electromagnet DC3, linear adjustable resistance RP1, voltmeter V, also has control circuit 2;The electromagnetic valve DC1 and DC2 have two, two electromagnetic valve DC1 and DC2 exhaust pipe and pneumatic right angle valve body 1 the left side end upper and lower part of the connecting pipe is respectively connected by screw thread, electromagnetic valve DC1, DC2 intake pipe and air compressor gas tank exhaust pipe is connected respectively by pipeline;The connecting shaft left and right side end of the pneumatic right angle valve body 1 is respectively welded with a connecting seat 101, fixed plate 102;The seat body right side end of the electromagnet DC3 is fixedly installed in the right side end middle part of the shell (the inside has larger space installation electromagnet and adjustable resistance) of connecting shaft 103 and its armature rod is located left side, the left side of armature rod is welded with a contact plate 3;The linear adjustable resistance RP1 is fixedly installed in the left side middle part of the shell of connecting shaft 103, and the right side end of the adjusting handle of linear adjustable resistance RP1 and the left side end of connecting seat 101 are fixedly installed together (and the lead connected with adjustable resistance RP1, electromagnet DC1 and DC2 is led out to the outside via the left and right side end opening of the shell, and the opening is sealed with sealing glue);The power module A1, power switch S1 and S2, voltmeter V, control circuit 2 are installed in the element box 4 of the front outer side end of the shell.

[0017] Figure 1 、 2The electromagnetic valve DC1 and DC2 are one-bit two-way electromagnetic valves (with one air inlet pipe, one air outlet pipe and one air exhaust pipe) as shown in FIG. 3. The right end of the fixed plate is glued to a brake plate 5 with anti-skid teeth on the surface. When the armature rod of the electromagnet DC3 is in the attracted state, the left side of the contact plate 3 and the right side of the brake plate 5 are spaced apart. When the electromagnet DC3 loses power, the left side of the contact plate 3 and the right side of the brake plate 5 are in close contact. The control circuit includes diodes VD1 and VD2, resistor R1, and adjustable resistor RP1 connected through the circuit board. The negative poles of the two diodes VD1 and VD2 are connected, and one end of the adjustable resistor RP1 is connected to one end of the resistor R1. The power input terminals 1 and 2 of the power module A1 are connected to the two poles of the AC power supply through wires, respectively. The power output terminals 3 and 4 of the power module A1 are connected to the other end of the adjustable resistor RP1, the power input terminals of the power switches S1 and S2 through wires, respectively. The power output terminals of the power switches S1 and S2, the negative power output terminal 4 of the power module A1 and the power input terminals of the electromagnetic valves DC1 and DC2 are connected through wires, respectively. The positive poles of the two diodes VD1 and VD2 are connected to the power output terminals of the power switches S1 and S2 through wires, respectively. The negative poles of the two diodes VD1 and VD2 and the power output terminals of the power module A1 are connected to the power input terminals of the electromagnet DC3 through wires. One end of the adjustable resistor RP1, the other end of the resistor R1 and the power input terminals of the voltmeter V are connected through wires. The display interface of the voltmeter V and the handles of the power switches S1 and S2 are located in the three holes in the front end of the component box, respectively.

[0018] Figure 1 、 2, 3, the AC 220V power supply into the power module A1 power input, power module A1 3, 4 pin output stable DC 12V power supply into the power switch S1, S2 and adjustable resistance RP1 the other end. Pneumatic right angle valve body 1 specific work, by adjusting the pressure of the compressed air into the housing 104 inside the valve seat to control the flow of the medium, when the compressed air driven diaphragm end through the connecting shaft 103 driven valve core down, the valve seat 105 in the flow channel opening degree is relatively small, from the valve seat one end into the other end of the liquid medium flow is relatively small, when the compressed air driven diaphragm lower end through the connecting shaft 103 driven valve core up, the valve seat 105 in the flow channel opening degree is relatively large, from the valve seat 105 one end into the other end of the liquid medium flow is relatively large; the above pneumatic right angle valve body 1 for the existing mature technology, the present application does not make any protection pneumatic right angle valve body 1 technical scheme. In the new type, open power switch S1 housing upper end solenoid valve DC1 power valve core open (power switch S2 is closed), the air compressor output compressed air through the solenoid valve DC1 exhaust pipe into the housing in the upper end, drive the diaphragm in the housing through the connecting shaft 103 driven valve core down (the housing of the diaphragm in the lower end of the air through the solenoid valve DC2 exhaust pipe discharge), the valve seat in the flow channel opening degree is relatively small. Open power switch S2 housing lower end solenoid valve DC2 power valve core open (power switch S1 is closed), the air compressor output compressed air through the solenoid valve DC2 exhaust pipe into the housing in the lower end, drive the diaphragm in the housing through the connecting shaft 103 driven valve core up (the housing of the diaphragm in the upper end of the air through the solenoid valve DC1 exhaust pipe discharge), the valve seat in the flow channel opening degree is relatively large. In the new type, whether it is open power switch S1 or S2, 12V power supply will be through the diode VD1, VD2 unidirectional conduction into the power input end of the electromagnet DC3, electromagnet DC3 power after its armature is attracted to the right rear end movement, the contact plate left end and fixed plate pull open spacing, so that the connecting shaft can move normally, pneumatic right angle valve body 1 can normally adjust the medium flow. Turn off power switch S1 and S2, 12V power supply will not enter the power input end of the electromagnet DC3, electromagnet DC3 power after its armature in the electromagnet DC3 spring elastic force, to the left end movement, the contact plate and fixed plate left end close together, so that the connecting shaft can no longer move, pneumatic right angle valve body 1 no longer adjust the medium flow.

[0019] Figure 1 、 2, 3, when the diaphragm driving connecting shaft 103 goes up or down, the connecting seat 101 will drive the handle of the adjustable resistor RP1 to go up or down, so that the resistance value of the adjustable resistor RP1 will change (the resistance value becomes larger when the handle goes down, and the resistance value becomes smaller when the handle goes up) ; when the connecting shaft goes down, the resistance value of the adjustable resistor RP1 becomes larger, so that the voltage of the power supply entering the voltmeter V through the adjustable resistor RP1 and the resistor R1 is relatively small, the voltage number displayed by the voltmeter V is relatively small, and the opening and closing degree of the valve core is relatively small; when the connecting shaft goes up, the resistance value of the adjustable resistor RP1 becomes smaller, so that the voltage of the power supply entering the voltmeter V through the adjustable resistor RP1 and the resistor R1 is relatively large, the voltage number displayed by the voltmeter V is relatively large, and the opening and closing degree of the valve core is relatively large. Through the above technical scheme, during the working of the new type, the relevant staff can control the distance of the connecting shaft driving the valve core to run in the valve seat through the voltage data displayed by the voltmeter, and then the purpose of controlling the opening and closing degree of the valve core is realized. After the medium flow rate set by the staff is reached each time, the electromagnet will lose power and automatically lock the connecting shaft. Therefore, even if the diaphragm or the shell of the pneumatic right-angle valve body has a gas leakage phenomenon, the distance of the connecting shaft driving the valve core to go up or down will not change, and the effect of accurately controlling the medium flow rate is ensured as much as possible. Figure 3 The power module A1 is an AC 220V to DC 12V power module finished product, the diodes VD1 and VD2 are 1N4007 (one-way conduction), the adjustable resistor RP1 has a resistance value of 470K, the resistor R1 has a resistance value of 100K, the voltmeter V is a liquid crystal voltage display meter with a range of 12V, the electromagnet DC3 has a power of 5W, and the electromagnetic valves DC1 and DC2 have a power of 2W.

[0020] The basic principle and main features of the new type and the advantages of the new type are shown and described above. For those skilled in the art, it is obvious that the new type is limited to the details of the above-described exemplary embodiments, and the new type can be realized in other specific forms without departing from the spirit or basic characteristics of the new type. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the new type 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 new type.

[0021] In addition, it should be understood that, although the present specification is described in terms of embodiments, the embodiments only contain one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new type of pneumatic right angle valve, comprising a pneumatic right angle valve body, a solenoid valve, an air compressor, an electromagnet, a linear adjustable resistor, a voltmeter, characterized in that, It also has control circuit; the electromagnetic valve has at least two, two solenoid valves one end and pneumatic right angle valve body shell side end two connecting pipes are connected respectively, two solenoid valves the other end and air compressor's gas holder are connected respectively;The connecting shaft both sides of pneumatic right angle valve body are installed with connecting seat, fixed plate respectively;The seat body side end of electromagnet is fixedly installed in the one side of the shell of connecting shaft, and the armature rod side end of electromagnet is installed with contact plate;The linear adjustable resistor is vertically distributed and is installed in the other side of the shell of connecting shaft, and the adjusting handle of linear adjustable resistor is installed together with the side end of connecting seat;The voltmeter and control circuit are installed in element box;The power output end and signal output end of control circuit are electrically connected with the power input end of electromagnet and voltmeter respectively.

2. The novel pneumatic right angle valve as claimed in claim 1, wherein, The electromagnetic valve is a two-way electromagnetic valve.

3. The novel pneumatic right angle valve as claimed in claim 1, wherein, The fixed plate side end is installed with rubber brake plate.

4. The novel pneumatic right angle valve as claimed in claim 1, wherein, When the armature rod of electromagnet is in the attraction state, the contact plate and brake plate are spaced, and when the electromagnet loses power, the left side of contact plate and brake plate contact.

5. The novel pneumatic right angle valve as claimed in claim 1, wherein, The control circuit includes diode, resistance and adjustable resistance, and is connected with adjustable resistance, two diode negative pole connection, adjustable resistance one end and resistance one end connection.

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