Oxygen generator with adjustable oxygen output

Abstract

The utility model relates to the technical field of oxygen generation equipment, in particular to an oxygen generator with adjustable oxygen output, which comprises an air compressor, a temporary storage tank for storing compressed air, a control system and an adjusting valve, the adjusting valve comprises a valve plate, valve holes with diameters decreasing in sequence are arranged on the valve plate, and a conical sieve is arranged right above the valve holes. The diameter of the bottom circle of the conical sieve is larger than or equal to that of the corresponding valve hole, and the conical sieve is controlled by a single-acting cylinder which is communicated with a temporary storage tank; the conical plug is controlled by the single-acting air cylinder to linearly move relative to the valve hole, so that the effective sectional area of the valve hole during oxygen passing is changed, and the graded accurate adjustment of the oxygen output of the oxygen generator is realized; power needed in the process of adjusting the oxygen output amount by the adjusting valve comes from air compressed by an air compressor in the oxygen generator, and a power output mechanism does not need to be additionally arranged.

Description

TECHNICAL FIELD

[0001] The utility model relates to oxygen -making equipment technical field, concretely is an oxygen -making machine with adjustable oxygen output. BACKGROUND

[0002] Oxygen -making machine is a device that makes oxygen, air compressor is compressed to a certain pressure and is temporarily stored in the temporary storage tank, the compressed air in the storage tank enters the air purification system to remove dust and other particulate matters in the air, then enters the air separation system (such as molecular sieve adsorption method, pressure swing adsorption method, low temperature separation method etc.) to realize the separation of oxygen and other gases, then is further processed to obtain oxygen with certain purity, finally stores oxygen or transports oxygen to the use point through the storage and transportation system, of course, it also includes control system (controller, control panel, pressure sensor, flowmeter etc.) for controlling the whole oxygen -making process and monitoring equipment operating state and collecting data.

[0003] But the device of the existing oxygen -making machine at the oxygen use end adjusts the oxygen output mostly through the alignment degree of changing the valve core hole and the valve body to control the flow, in the scene that needs to accurately control the oxygen output, it is obviously unable to meet the requirement to control the oxygen output by adjusting a single valve core hole, therefore an oxygen -making machine with adjustable oxygen output is proposed, and the power of adjusting the oxygen output is derived from the compressed air of the air compressor in the oxygen -making machine. UTILITY MODEL CONTENT

[0004] The utility model aims at providing an oxygen -making machine that can accurately adjust the oxygen output and the power of adjusting the oxygen output is derived from the compressed air of the air compressor in the oxygen -making machine to solve the problems proposed in the above background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] An oxygen -making machine with adjustable oxygen output, comprising an air compressor, a temporary storage tank for storing compressed air, a control system, further comprising an adjusting valve, the adjusting valve comprises an adjusting valve shell, the adjusting valve shell is equipped with oxygen inlet and oxygen outlet, the adjusting valve is equipped with valve plate inside, a plurality of valve holes with different diameters are formed in the valve plate, a conical plug is arranged directly above the valve hole, the bottom surface diameter of the conical plug is greater than or equal to the diameter of the valve hole corresponding to it, the upper end surface of the conical plug is fixedly connected with the output end of a single -acting cylinder, and the single -acting cylinder is fixedly connected with the adjusting valve shell through a connecting rod.

[0007] Preferably, the connecting rod is hollow inside, the connecting rod is communicated with the single-acting cylinder, the connecting rod is communicated with a first pipeline through a first electromagnetic valve, the first pipeline is communicated with the temporary storage tank through a pressure reducing valve; a second electromagnetic valve is further included, the second electromagnetic valve communicates the single-acting cylinder and a second pipeline, and the second pipeline communicates an external environment.

[0008] Preferably, the sensor is a linear potentiometer.

[0009] Preferably, the valve holes are uniformly distributed around the center of the valve plate, and the diameters of the valve holes decrease in turn.

[0010] Preferably, the conical plugs are in the same plane and have the same height.

[0011] Preferably, the upper end of the valve hole is provided with a rubber pad.

[0012] Compared with the prior art, the oxygen regulator has the beneficial effects that:

[0013] 1. The valve holes with diameters decreasing in turn and the conical screens corresponding to the valve holes are arranged, the conical plugs move linearly relative to the valve holes, the effective cross-sectional area of the valve holes when the oxygen passes through the valve holes can be changed, and the stepwise accurate adjustment of the oxygen output of the oxygen generator is realized.

[0014] 2. The compressed air in the temporary storage tank is controlled and guided to enter and discharge the cylinder body, and the linear movement of the conical screen is realized by cooperating with the tension spring, and then the accurate control of the oxygen output is realized; the power required in the process of adjusting the oxygen output of the adjusting valve is derived from the air compressed by the air compressor in the oxygen generator, and no additional power output mechanism needs to be added. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 The structure schematic view of the adjusting valve of the utility model;

[0016] Fig. 2 The mechanism schematic view of the utility model after the adjusting valve shell is removed and a single-acting cylinder, a connecting rod and a connecting pipeline connected therewith are cut.

[0017] In the figure: adjusting valve shell 1, oxygen inlet 2, oxygen outlet 3, valve plate 4, valve hole 5, conical plug 6, single-acting cylinder 7, cylinder body 701, piston 702, piston rod 703, tension spring 704, connecting rod 8, first electromagnetic valve 9, first pipeline 10, second electromagnetic valve 11, second pipeline 12, connecting pipeline 13, rubber pad 14. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to Figs. 1-2 The utility model provides a technical scheme: an oxygen output adjustable oxygen generator, including air compressor, the temporary storage tank of compressed air storage and control system, control system includes controller (including programmable logic controller: for executing logic operation, timing, count and sequence control etc.), control panel, pressure sensor, flowmeter etc for controlling oxygen generator each component's work, oxygen flow's adjustment, safety monitoring and electromagnetic valve's opening and closing etc, still include regulating valve, regulating valve includes regulating valve casing 1, be equipped with oxygen inlet 2 and oxygen outlet 3 on regulating valve casing 1, be equipped with valve plate 4 in regulating valve, be equipped with a plurality of different diameter valve holes 5 on valve plate 4, be equipped with conical plug 6 directly above valve hole 5, the bottom surface circle diameter of conical plug 6 is greater than or equal to the diameter of its corresponding valve hole 5, the upper end surface of conical plug 6 is fixedly connected single -acting cylinder 7's output, single -acting cylinder 7 is fixedly connected regulating valve casing 1 through connecting rod 8.

[0020] Single -acting cylinder 7 includes cylinder body 701, be equipped with piston 702 in cylinder body 701, the lower end surface of piston 702 is fixedly connected piston rod 703, be equipped with tension spring 704 between the upper end surface of piston 702 and the inner wall of cylinder body 701 top surface;Connecting rod 8 is hollow inside, connecting rod 8 is communicated with cylinder body 701 through the interface of setting on the top surface of cylinder body 701, connecting rod 8 is communicated with first pipeline 10 through first electromagnetic valve 9, first electromagnetic valve 9 can control the on-off of compressed air into the cylinder body 701 of each single -acting cylinder 7, first pipeline 10 is communicated with temporary storage tank through pressure reducing valve, because the compressed air pressure in temporary storage tank is higher, and the resistance required for piston 702 to control conical plug 6 to move is smaller, need through pressure reducing valve to adjust the compressed air in temporary storage tank to the appropriate pressure;Still include second electromagnetic valve 11, cylinder body 701 is communicated with external environment through connecting pipe 13, second electromagnetic valve 11, second pipeline 12 in proper order, second electromagnetic valve 11 controls the discharge of compressed air in cylinder body 701, and realizes the upward movement of piston 702 in cooperation with tension spring 704;Single -acting cylinder 7 and realize the accurate movement of single -acting cylinder 7 output end (i.e. piston rod 703) are the known knowledge of the work of existing single -acting cylinder 7, here will not repeat.

[0021] The electromagnetic valve described in the application is a proportional electromagnetic valve, by adjusting the electromagnetic force of the electromagnetic valve, the opening size of the valve port is controlled, and then the compressed air entering or discharging the cylinder can be controlled. Specifically, a type 2873 direct-acting two-way standard proportional electromagnetic valve is adopted, of course, other types of proportional electromagnetic valves can be adopted according to actual conditions.

[0022] The valve holes 5 are uniformly distributed around the center of the valve plate 4, and the diameters of the valve holes 5 are sequentially reduced, and the valve holes 5 with different diameters cooperate with the conical plugs 6, so that the oxygen output of the oxygen generator can be controlled in stages and accurately.

[0023] The conical plugs 6 are in the same plane and have the same height.

[0024] The upper end of the valve hole 5 is provided with a rubber pad 14, which can better seal when the conical screen completely blocks the valve hole 5, and at the same time, when the conical screen contacts the valve hole 5, it plays a buffering role and avoids damage caused by the downward displacement error of the conical screen.

[0025] In the operation process of the utility model, the required oxygen output parameters are set through the control panel, the control system controls the opening and closing of the first electromagnetic valve 9 and the second electromagnetic valve 11 through the parameters fed back by the flow meter of the oxygen outlet, and cooperates with the tension spring 704, so as to control the effective cross section of the valve hole 5, thereby adjusting the oxygen output of the oxygen generator, and the specific situation is:

[0026] When it is necessary to reduce the oxygen output, the second electromagnetic valve 11 is fully closed, the control system controls the first electromagnetic valve 9, so that the compressed gas enters the cylinder body 701 of each single-acting cylinder 7, pushes the conical screen downward and reduces the effective cross-sectional area of the valve hole 5, in this process, the flow meter continuously feeds back the oxygen flow parameter of the oxygen outlet 3 on the cylinder body 701, when the difference between the parameter fed back by the flow meter and the set oxygen output parameter is within the first threshold value, the control first electromagnetic valve 9 cuts off the channel for compressed air to enter other single-acting cylinders 7, and keeps the compressed air entering the single-acting cylinder 7 corresponding to the conical screen with the largest diameter of the bottom circle, the conical screen continues to move downward, and the effective cross-sectional area of the valve hole 5 corresponding to the conical screen is continuously reduced, at the same time, the flow meter continuously feeds back the parameter, when the difference between the measured parameter and the set oxygen output parameter is within the second threshold value, the compressed air entering the single-acting cylinder 7 corresponding to the conical screen with the largest diameter of the bottom circle is cut off, and the compressed air enters the single-acting cylinder 7 corresponding to the conical screen with the second largest diameter of the bottom circle, the conical screen moves downward, and the flow meter and the control system repeat the above process until the measured parameter of the flow meter is the same as the set oxygen output parameter.

[0027] When the oxygen output needs to be increased, the first electromagnetic valve 9 is completely closed, the control system controls the second electromagnetic valve 11 to be completely opened, the compressed air in each single-acting cylinder 7 is slowly discharged, the conical sieve is moved up under the action of the tension spring 704 and the effective cross-sectional area of the valve hole 5 is increased, in this process, the flowmeter continuously feeds back the oxygen flow parameter of the oxygen outlet 3, when the difference between the parameter fed back by the flowmeter and the set oxygen output parameter is within the first threshold value, the control system controls the second electromagnetic valve 11 to cut off the compressed air discharge channel of the other single-acting cylinders 7, the compressed air of the single-acting cylinder 7 corresponding to the conical sieve with the largest bottom circle diameter continues to be slowly discharged, the conical sieve continues to move up under the action of the tension spring 704 and continues to increase the effective cross-sectional area of the valve hole 5 corresponding to it, at the same time, the flowmeter continuously feeds back the parameter, when the difference between the measured parameter and the set oxygen output parameter is within the second threshold value, the discharge channel of the compressed air in the single-acting cylinder 7 corresponding to the conical sieve with the largest bottom circle diameter is cut off, and the compressed air in the single-acting cylinder 7 corresponding to the conical sieve with the second largest bottom circle diameter is discharged, the conical sieve moves up, the flowmeter and the control system repeat the above process until the measured parameter of the flowmeter is the same as the set oxygen output parameter.

[0028] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An oxygen generator with adjustable oxygen output, comprising an air compressor, a temporary storage tank for storing compressed air, a control system, characterized in that: The adjusting valve comprises an adjusting valve shell (1) provided with an oxygen inlet (2) and an oxygen outlet (3), a valve plate (4) arranged inside the adjusting valve shell (1), a plurality of valve holes (5) of different diameters formed in the valve plate (4), a conical plug (6) arranged above the valve holes (5), a bottom surface of the conical plug (6) having a diameter greater than or equal to a diameter of the valve hole (5) corresponding to the conical plug (6), and an output end of a single-acting cylinder (7) fixedly connected to an upper end surface of the conical plug (6), wherein the single-acting cylinder (7) is fixedly connected to the adjusting valve shell (1) through a connecting rod (8).

2. The oxygen generator with adjustable oxygen output according to claim 1, characterized in that: The connecting rod (8) is hollow, communicates with the single-acting cylinder (7), communicates with a first pipeline (10) through a first electromagnetic valve (9), and communicates with the temporary storage tank through a pressure reducing valve; a second electromagnetic valve (11) is further arranged to communicate the single-acting cylinder (7) with a second pipeline (12), and the second pipeline (12) communicates with an external environment.

3. The oxygen generator with adjustable oxygen output according to claim 1, characterized in that: The valve holes (5) are uniformly distributed around a center of the valve plate (4), and the diameters of the valve holes (5) decrease in sequence.

4. The oxygen generator with adjustable oxygen output according to claim 1, characterized in that: The conical plugs (6) are in the same plane and have the same height.

5. The oxygen concentrator of claim 1, wherein: An upper end of the valve hole (5) is provided with a rubber pad (14).

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