Gear adjusting device

Abstract

The utility model discloses a gear adjusting device, which relates to the field of gear adjustment and comprises a differential pressure sensor electromagnetic valve I, an electromagnetic valve II and a pulse head which are arranged on an air cylinder, and a pulse gear air hole and a continuous gear air hole are formed in the air cylinder. And the electromagnetic valve I and the electromagnetic valve II respectively control the on-off of air paths corresponding to the continuous gear air hole and the pulse gear air hole. A pipeline I connected with the air storage cylinder and the electromagnetic valve I, a pipeline II connected with the air storage cylinder and the electromagnetic valve II, a pipeline III connected with the electromagnetic valve I, the electromagnetic valve II and the oxygen outlet mouthpiece simultaneously, and a pipeline IV connected with the electromagnetic valve II and the differential pressure sensor simultaneously are arranged in the pulse head. According to the scheme, the first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the first electromagnetic valve, the second electromagnetic valve and the differential pressure sensor are arranged, switching of three gear modes can be achieved, meanwhile, the pipeline structure is simple, gas circuit switching can be achieved only through cooperation of the two electromagnetic valves, and installation and overhauling are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear adjustment field, more specifically, relate to a gear adjusting device. BACKGROUND

[0002] Oxygen generator is a kind of equipment that can extract and concentrate oxygen from air, and is widely used in medical, family, industry and other fields. Its working principle is usually through molecular sieve technology or membrane separation technology, nitrogen and other gases in air are separated, so as to obtain higher concentration of oxygen. Oxygen generator not only plays an important role in the oxygen therapy of patients with respiratory system diseases such as chronic obstructive pulmonary disease (COPD) and the like, but also is widely used in hospital, family nursing and other occasions.

[0003] The gears of oxygen generator include continuous gear, pulse gear and fixed frequency gear, different gears have different working modes. Among them, the continuous gear is in continuous gear mode, the oxygen generator continuously outputs a certain flow of oxygen, in this mode, oxygen is supplied according to constant flow, and there is no interruption, which is suitable for patients who need constant oxygen supply, especially those who need a large amount of oxygen or still need continuous oxygen supply when resting or sleeping. Pulse gear is an intermittent oxygen output mode, in this mode, the oxygen generator senses and provides oxygen during inhalation according to the user's breathing, and the flow of output oxygen is temporarily "pulsed" released during inhalation. The oxygen supply of pulse gear is controlled according to the breathing pattern of the patient, so oxygen is only provided during inhalation. It is suitable for most patients who are more active, especially those who need oxygen but do not want to waste too much oxygen. For example, patients with mild or moderate chronic obstructive pulmonary disease (COPD). Fixed frequency gear is in fixed frequency mode, the oxygen generator provides a fixed flow, which is not affected by breathing frequency and depth, which means that oxygen will be continuously output at a preset flow rate regardless of whether the user is in the process of inhalation or exhalation, which is suitable for people who need fixed flow of oxygen, especially when performing relatively stable activities, or in hospitals and other occasions where precise control of oxygen flow is required.

[0004] The above three gears are realized by switching the gas circuit during use, and the existing scheme has complex gas circuit structure, unreasonable pipeline arrangement and more electromagnetic valves and other structures, which is not conducive to maintenance and maintenance. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a gear adjusting device to solve the technical problems in the above background.

[0006] The utility model discloses technical scheme provides a gear adjusting device, including setting on the differential pressure sensor solenoid valve one, solenoid valve two and pulse head of gas cylinder, set up pulse gear gas hole and continuous gear gas hole on the gas cylinder, solenoid valve one and solenoid valve two control respectively continuous gear gas hole and the on-off of the corresponding gas path of pulse gear gas hole,

[0007] The pulse head is internally provided with pipeline one connecting the gas cylinder and the solenoid valve one, pipeline two connecting the gas cylinder and the solenoid valve two, pipeline three connecting the solenoid valve one, the solenoid valve two and the oxygen outlet connector, and pipeline four connecting the solenoid valve two and the differential pressure sensor, the pipeline three is connected with the oxygen outlet connector through silica gel pipe one, and the pipeline four is connected with the differential pressure sensor through silica gel pipe two.

[0008] In a preferred embodiment, in the continuous gear mode, the solenoid valve one is always open, and the solenoid valve two is always closed.

[0009] In a preferred embodiment, in the continuous gear mode, the gas passage is: the continuous gear gas hole, the pipeline one, the solenoid valve one, the pipeline three and the oxygen outlet connector.

[0010] In a preferred embodiment, in the fixed frequency gear mode, the solenoid valve one is always closed, and the solenoid valve two is always open.

[0011] In a preferred embodiment, in the fixed frequency gear mode, the gas passage is: the pulse gear gas hole, the pipeline two, the solenoid valve two, the pipeline three and the oxygen outlet connector.

[0012] In a preferred embodiment, in the pulse gear mode, the solenoid valve one is always closed, and the solenoid valve two is opened for a short time after receiving the negative pressure signal feedback of the differential pressure sensor.

[0013] In a preferred embodiment, in the negative pressure mode, the gas passage is: the oxygen outlet connector, the pipeline three, the solenoid valve two, the pipeline four and the differential pressure sensor.

[0014] The utility model discloses technical scheme's beneficial effect is:

[0015] The utility model discloses technical scheme's beneficial effect is: DRAWINGS

[0016] Figure 1 It is the whole structure schematic drawing of the utility model,

[0017] Figure 2 It is another whole structure schematic drawing of the utility model,

[0018] Figure 3The utility model pulse head internal gas path structure diagram,

[0019] Figure 4 The utility model discloses continuous gear air hole and pulse gear air hole and air cylinder position relation diagram.

[0020] Mark explanation: 1 pressure reducing valve, 2 air cylinder, 3 differential pressure sensor, 4 electromagnetic valve one, 5 electromagnetic valve two, 6 pulse head, 61 pipeline one, 62 pipeline two, 63 pipeline three, 64 pipeline four, 7 silica gel pipe one, 8 silica gel pipe two, 9 oxygen outlet connector, 10 continuous gear air hole, 11 pulse gear air hole. Specific embodiments

[0021] The utility model makes further detailed explanation in combination with the drawings and specific embodiments. The embodiment of the utility model is given for example and convenience of description, and is not exhaustive or limit the utility model to the disclosed form. Many modifications and changes are obvious to those skilled in the art. The embodiment is selected and described to better illustrate the principle and practical application of the utility model, and enable those skilled in the art to understand the utility model so as to design various embodiments with various modifications suitable for specific purposes.

[0022] As Figures 1-4 The utility model technical scheme provides a gear adjusting device, including setting on the differential pressure sensor 3 electromagnetic valve one 4, electromagnetic valve two 5 and pulse head 6 of air cylinder 2, set up pulse gear air hole 11 and continuous gear air hole 10 on air cylinder 2, the electromagnetic valve one 4 and the electromagnetic valve two 5 control the on-off of the corresponding gas path of the continuous gear air hole 10 and the pulse gear air hole 11 respectively. Oxygen enters the air cylinder after passing through the pressure reducing valve 1, then enters the subsequent pipeline for work through the continuous gear air hole 10 and the pulse gear air hole 11 on the air cylinder 2, wherein the electromagnetic valve one 4 and the electromagnetic valve two 5 realize the on-off of the corresponding pipeline, to change the gas path, realize gear adjustment.

[0023] The pulse head 6 is internally provided with the pipeline one 61 connecting the air cylinder 2 and the electromagnetic valve one 4, the pipeline two 62 connecting the air cylinder 2 and the electromagnetic valve two 5, the pipeline three 63 simultaneously connecting the electromagnetic valve one 4, the electromagnetic valve two 5 and the oxygen outlet connector 9, and the pipeline four 64 simultaneously connecting the electromagnetic valve two 5 and the differential pressure sensor 3, the pipeline three 63 is connected with the oxygen outlet connector 9 through the silica gel pipe one 7, and the pipeline four 64 is connected with the differential pressure sensor 3 through the silica gel pipe two 8.

[0024] Four pipelines cooperate with the electromagnetic valve one 4, the electromagnetic valve two 5 and the differential pressure sensor 3, and can realize gear adjustment, and the specific adjustment is as follows:

[0025] (1) continuous gear mode

[0026] In continuous mode, the electromagnetic valve 4 is always open, and the electromagnetic valve 5 is always closed. The electromagnetic valve 5 is always closed, and the pulse hole 11 does not emit gas. The electromagnetic valve 4 is always open, and the continuous hole 10 emits gas. In this state, the gas passes through the continuous hole 10, the pipeline 61, the electromagnetic valve 4, the pipeline 63, and the oxygen outlet 9 in sequence. The oxygen outlet 9 is connected to the nasal oxygen tube. The continuous hole 10 is embedded with a copper nut with a fixed diameter hole, which controls the gas flow.

[0027] (2) Fixed frequency mode

[0028] In fixed frequency mode, the electromagnetic valve 4 is always closed, and the electromagnetic valve 5 is always open. The electromagnetic valve 4 is always closed, and the continuous hole 10 does not emit gas. The electromagnetic valve 5 is always open, and the pulse hole 11 emits gas. In this state, the gas passes through the pulse hole 11, the pipeline 62, the electromagnetic valve 5, the pipeline 63, and the oxygen outlet 9 in sequence. The electromagnetic valve 5 controls the rated gas flow by controlling the energization time.

[0029] (3) Pulse mode

[0030] In pulse mode, the electromagnetic valve 4 is always closed, and the electromagnetic valve 5 is opened for a short time after receiving the negative pressure signal feedback from the pressure difference sensor 3. The respiratory signal is detected by the pressure difference sensor 3 and fed back to the electromagnetic valve 5, which gives a given energization opening signal. The energization time of the electromagnetic valve 5 is different (multiple gears can be set), corresponding to different gears. When the patient inhales through the nasal oxygen tube, the oxygen outlet 9 has negative pressure, which is then transmitted to the subsequent connected components. The gas passes through the oxygen outlet 9, the pipeline 63, the electromagnetic valve 5, the pipeline 64, and the pressure difference sensor 3 in sequence. At the same time, the pressure difference sensor 3 feeds back the negative pressure signal to the electromagnetic valve 5, which opens for a short time according to the set gear. The pulse hole 11 emits gas, and in this state, the gas passes through the pulse hole 11, the pipeline 62, the electromagnetic valve 5, the pipeline 63, and the oxygen outlet 9 in sequence, and then enters the nasal oxygen tube.

[0031] The present scheme can realize the switching of three gear modes by setting the pipeline 61, the pipeline 62, the pipeline 63, and the pipeline 64, as well as the electromagnetic valve 4, the electromagnetic valve 5, and the pressure difference sensor 3. At the same time, the pipeline structure of the present scheme is simple, and only two electromagnetic valves are needed to realize the switching of the gas circuit, which is convenient for installation and maintenance.

[0032] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative labor shall belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. A range adjustment device, characterized by: The differential pressure sensor solenoid valve one, solenoid valve two and pulse head are arranged on the gas cylinder, the pulse notch and continuous notch are arranged on the gas cylinder, the solenoid valve one and the solenoid valve two control the opening and closing of the corresponding gas path of the continuous notch and the pulse notch respectively; The pulse head is internally provided with the pipeline one connecting the gas cylinder and the solenoid valve one, the pipeline two connecting the gas cylinder and the solenoid valve two, the pipeline three connecting the solenoid valve one, the solenoid valve two and the oxygen outlet, and the pipeline four connecting the solenoid valve two and the differential pressure sensor, the pipeline three is connected with the oxygen outlet through the silica gel pipe one, and the pipeline four is connected with the differential pressure sensor through the silica gel pipe two.

2. A range adjuster according to claim 1, wherein: In the continuous notch mode, the solenoid valve one is always open, and the solenoid valve two is always closed.

3. A range adjuster according to claim 2, wherein: In the continuous notch mode, the gas path is: the continuous notch, the pipeline one, the solenoid valve one, the pipeline three and the oxygen outlet.

4. A range adjuster according to claim 1, wherein: In the fixed frequency notch mode, the solenoid valve one is always closed, and the solenoid valve two is always open.

5. A range adjuster according to claim 4, wherein: In the fixed frequency notch mode, the gas path is: the pulse notch, the pipeline two, the solenoid valve two, the pipeline three and the oxygen outlet.

6. A range adjuster according to claim 1, wherein: In the pulse notch mode, the solenoid valve one is always closed, and the solenoid valve two is opened for a short time after receiving the negative pressure signal feedback of the differential pressure sensor.

7. A range adjuster according to claim 6, wherein: In the negative pressure mode, the gas path is: the oxygen outlet, the pipeline three, the solenoid valve two, the pipeline four and the differential pressure sensor.

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