CN216242387U - Automatically controlled flow valve and oxygenerator - Google Patents

Abstract

The utility model relates to the technical field of oxygen generation, in particular to an electric control flow valve and an oxygen generator.A motor is provided with an output shaft at one end; the valve body is arranged on one side of the motor, the tail end of the valve body is provided with an air inlet, the middle end of the valve body is provided with an air outlet, and an output shaft of the motor is positioned in the valve body; the transmission piece is arranged in the valve body and is in threaded connection with the valve body, and the transmission piece and the output shaft are coaxially and rotatably arranged and move along the axial direction of the output shaft; the needle valve moves in the valve body along the axial direction of the output shaft, and the conical end of the needle valve is matched with the inner side wall of the air inlet and used for controlling the flow of a passage between the air inlet and the air outlet; a thrust bearing is arranged between the needle valve and the transmission piece, and the top of the needle valve, the thrust bearing and the transmission piece are sequentially abutted all the time. The utility model changes the point contact of the bottom of the sliding shaft of the original actuator and the needle valve into surface contact, reduces the pressure intensity of the contact surface, reduces the abrasion and prolongs the service life. At the same time, the component costs are reduced.

Description

Automatically controlled flow valve and oxygenerator

Technical Field

The utility model relates to the technical field of oxygen generation, in particular to an electric control flow valve and an oxygen generator.

Background

At present, with more attention of people to sub-health and more people in sub-health state, the market demand for oxygen therapy is also bigger and bigger, and the oxygenerator also more and more walks into people's family, for providing different oxygen supply capacity under different health state for the user, can provide the selection of different oxygen volumes when the oxygenerator supplies oxygen, for example sets up different gears.

Different gears correspond the oxygen of different flow usually, and the implementation mode of different flow has a plurality ofly, to molecular sieve formula pressure swing adsorption principle oxygenerator, can be through changing the volume that provides compressed air for the molecular sieve, and then influence the oxygen volume of output, also can change final equivalent oxygen supply volume through changing the frequency of giving the user oxygen suppliment simultaneously. However, whether the frequency or the oxygen supply amount of the compressed air is changed, many error factors exist, such as the change of the compressed air and the change of the molecular sieve adsorption final oxygen production amount are not in a perfect linear relation, and the change of the frequency can only be realized by changing the oxygen supply times within a fixed time or increasing the time of single oxygen supply, but in the process that discrete values are equivalent to continuous values, and the oxygen supply mode for oxygen therapy is added to supply oxygen in vitro, so that the disturbance of the external air generates errors on the realization of the final target flow.

In addition, through the mode of changing frequency or single time ventilation time, put forward higher requirement to the life-span and the accurate reaction of realizing the switching valve that the frequency changes simultaneously, it is very big to have inaccurate probability in the realization.

Therefore, there is a valve that changes the ventilation flow of the ventilation pipeline, and some schemes use an actuator to simplify the mechanism of the whole valve body, but the actuator is expensive and expensive for mass use, and the bottom of the actuator is in point contact with the valve core assembly, so that when excessive wear occurs, the accuracy of the valve body is directly affected.

In particular, even if a small amount of flow rate is applied to a flow valve used in a portable oxygen generator with a small range, the flow valve will have a great adverse effect on the precise adjustment in the whole range when the wear occurs at a critical position where the adjustment precision can be changed. Especially when the valve is adjusted between the flow rate is increased and decreased repeatedly, the accumulated inaccuracy can continuously amplify the error, and the accurate service life of the valve is greatly reduced.

SUMMERY OF THE UTILITY MODEL

According to the defects of the prior art, the utility model provides the electric control flow valve, the rotation of the push rod is changed into the vertical movement through the thrust bearing, the ball contact surface of the thrust bearing is in surface contact, the abrasion degree is greatly reduced, the service life of the valve is further ensured, and the cost of the valve is reduced.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the utility model provides an electric control flow valve, which comprises a motor, a flow control valve and a flow control valve, wherein one end of the motor is provided with an output shaft; and

the valve body is arranged on one side of the motor, the tail end of the valve body is provided with an air inlet, the middle end of the valve body is provided with an air outlet, and the output shaft of the motor is positioned in the valve body; the transmission piece is arranged in the valve body and is in threaded connection with the valve body, and the transmission piece and the output shaft rotate coaxially and move along the axial direction of the output shaft; the needle valve moves in the valve body along the axial direction of the output shaft, and the conical end of the needle valve is matched with the inner side wall of the air inlet and used for controlling the flow of a passage between the air inlet and the air outlet; the needle valve with be provided with thrust bearing between the driving medium, the needle valve top thrust bearing with offset in proper order all the time between the driving medium three.

Furthermore, a limiting bulge is arranged in the valve body and positioned at the upper end of the transmission piece, and is used for limiting the transmission piece to move along the axial direction of the output shaft.

Further, spacing arch is hollow plectane, the lateral surface of hollow plectane is provided with the external screw thread, the medial surface of valve body is provided with the internal thread, the lateral surface of hollow plectane with the internal thread threaded connection of valve body, be provided with the window on the valve body, the window is used for adjusting hollow plectane for the valve body is in output shaft ascending displacement in the axial.

Furthermore, the hollow circular plate is exposed on the outer side wall of the window and provided with a gear mark, a positioning indicating line is arranged outside the window, and the hollow circular plate is also provided with a poke rod which extends outwards from the inside of the window.

Further, the upper end of needle valve is provided with first boss, the upper end of air inlet is provided with the second boss, first boss with be provided with the elastic component between the second boss, the elastic component makes the needle valve has and keeps away from the motion trend of air inlet, the valve body the gas outlet sets up first boss with between the second boss.

Further, the elastic piece is an elastic sheet or a compression spring.

Furthermore, a sealing ring is arranged at the joint of the needle valve and the side wall of the valve body.

Further, the upper end lateral wall of needle valve with the inside wall of valve body is provided with the edge protruding, the groove structure of grafting each other and ability looks friction each other of output shaft axial direction, the arch is in slide the setting in the recess.

Furthermore, a vent hole is formed in the needle valve, one end of the vent hole faces towards the air inlet but is not communicated with the air inlet all the time, and the other end of the vent hole penetrates out of the air outlet and moves in the opening of the air outlet along the axial direction of the output shaft.

The utility model has the following beneficial effects: compared with the prior art that the precision of the whole small-sized valve is greatly influenced by the abrasion caused by the friction of components in the flow opening and closing direction in the valve, the flow valve with the small range has the advantages that the problem of inaccurate flow regulation caused by small abrasion in the flow valve with the small range is effectively solved, the cost is low, the structural assembly is more convenient, and the component cost is reduced.

Meanwhile, the utility model also sets different ranges, so that the valve can be suitable for different application scenes, and the range adjustment is convenient and reliable.

Drawings

FIG. 1 is a schematic view, partly in section, of one embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the structure of portion A of FIG. 1;

FIG. 3 is an enlarged view of a portion of the structure of an embodiment of the present invention;

FIG. 4 is a schematic view, partly in section, of one embodiment of the present invention;

fig. 5 is a schematic diagram of a partial external structure of an embodiment of the present invention.

In the figure, the device comprises a motor 1, a motor 2, an output shaft 3, a transmission part 4, a thrust bearing 5, a needle valve 6, an elastic part 7.1, an air outlet 7.2, an air inlet 7.3, an air vent 8, a valve body 9, a sealing ring 10, a limiting bulge 11, a window 12 and a poke rod.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Example (b):

domestic portable oxygenerator complies with the demand of era, people's family life has walked into more and more, the oxygenerator can provide different gears according to the user is different to the demand of oxygen volume, certain specific flow is corresponded to certain gear, but to portable domestic oxygenerator, flow is general less, the range of the regulation of flow is also less simultaneously, so the wearing and tearing of the inside part of the flow valve of the flow size of current through adjusting oxygen therapy pipeline, even if very little wearing and tearing, also can lead to more obvious error, and because flow control valve is flow big usually, adjust repeatedly between the small, less error, also can slowly be enlargied in the adjustment process is relapseed many times. When the flow valve controlled and adjusted by the motor at present is used, the accuracy of flow adjustment is fast to deteriorate, and the service life of normal use is short.

In order to solve the above problems, the present invention provides an electrically controlled flow valve, as shown in fig. 1, which includes a motor 1 and a valve body 8, wherein the valve body 8 is located at one side of the motor 1, an air outlet 7.1 and an air inlet 7.2 are arranged on the valve body 8, and are respectively located at the middle end and the tail end of the valve body 8, and an output shaft 2 of the motor 1 protrudes outwards and extends into the valve body 8. Still include driving medium 3 for spread the rotation of the output shaft 2 of motor 1, driving medium 3 sets up in valve body 8, with 8 threaded connection of valve body, driving medium 3 follows output shaft 2 and is coaxial rotation, simultaneously, because 3 threaded connection of valve body 8 and driving medium, the event, under the fixed condition of valve body 8 and 1 relative position of motor, when driving medium 3 rotates around the central axis of output shaft 2, can produce the displacement along the axial direction of output shaft 2 for valve body 8.

The needle valve 5 moves in the valve body 8 along the axial direction of the output shaft 2, the conical end of the needle valve is matched with the inner side wall of the air inlet 7.2, the flow of a passage between the air inlet 7.2 and the air outlet 7.1 is controlled, the reason for realizing the movement of the needle valve 5 is that a thrust bearing 4 is arranged between the needle valve 5 and the transmission part 3, the top of the needle valve 5 and the three parts of the thrust bearing 4 and the transmission part 3 are always sequentially offset, and the transmission part 3, the output shaft 2 and the valve body 8 are always offset, so the needle valve 5 moves in the axial direction of the output shaft 2. Thrust bearing 4 keeps apart the axial of driving medium 3 and needle valve 5, because be provided with the ball of a plurality of spheres in thrust bearing 4, so, the top and a plurality of smooth ball roll connection of needle valve 5, reduce the friction of contact surface to minimumly, and disperse on a plurality of balls, pressure obtains the dispersion, and rolling friction is littleer to the wear of contact surface for static friction, driving medium 3 and needle valve 5 are very little towards thrust bearing 4's one side wearing and tearing, this degree of wear that has just greatly reduced the reciprocal motion contact surface, the accurate deadline of accuracy of valve has been prolonged, greatly prolonged life, also need not adopt the structure of actuator simultaneously, the cost of valve has been reduced, simple structure is compact.

There are many ways to achieve the above-mentioned offset, including but not limited to, in one embodiment, the above-mentioned offset is achieved by an elastic member 6, a first boss is arranged at the upper end of the needle valve 5, the boss may be annular, or only several supporting bosses at the annular position, a second boss is arranged at the upper end of the air inlet 7.2, likewise, the second boss may be annular, or several supporting bosses at the annular position, the elastic member 6 is arranged between the first and second bosses, the elastic member 6 makes the needle valve 5 have a movement tendency far away from the air inlet 7.2, i.e. the needle valve 5 always offsets against the thrust bearing 4 by the elastic member 6, and the elastic member 6 can be achieved in various ways, including but not limited to, an elastic sheet, or a compression coil spring. The air outlet 7.1 of the valve body 8 is arranged between the first boss and the second boss, and the number of the air inlets 7.2 and the number of the air outlets 7.1 can be one or more, in one embodiment, 1 respectively, as shown in fig. 2.

In order to ensure that the gas on the valve body 8 does not leak, namely the gas can only flow between the gas inlet 7.2 and the gas outlet 7.1, a sealing ring 9 can be arranged at the abutting part of the outer side wall of the needle valve 5 and the inner side wall of the valve body 8 to ensure that the gas does not leak.

The wear along the central axis of the output shaft 2 will increase the error of the present invention in flow rate adjustment, so to further reduce the wear in this direction, it can be achieved by reducing the rotation of the needle valve 5, in one embodiment (not shown in the figure), the outer side wall of the upper end of the needle valve 5 is provided with a protrusion along the axial direction of the output shaft 2, the inner side wall of the valve body 8 is provided with a groove, the protrusion is slidably arranged in the groove, it can be understood that the arrangement positions of the protrusion and the groove can be exchanged. Thus, the needle valve 5 does not rotate axially relative to the valve body 8, and abrasion between the bottom of the needle valve 5 and other parts is reduced.

In order to change the matching structure of the groove and the protrusion and simplify the arrangement of the valve body, in one embodiment, as shown in fig. 3, a vent hole 7.3 can be formed on the needle valve 5, and one end of the vent hole 7.3 faces to the direction of the air inlet 7.2 but is not always communicated with the air inlet 7.2, namely, the end is isolated from the air inlet 7.2 when the valve flow is 0; and the air outlet 7.1 at the other end is penetrated out. The air inlet 7.2 is provided with an opening on the valve body 8, one end of the vent hole 7.3, which is positioned in the air outlet 7.1, can extend outwards, the shape of the air outlet 7.1 is along the axial direction of the output shaft 2, and the extending part of the vent hole 7.3 can be matched with the air outlet 7.1 in a mode similar to a protruding sliding groove, so that the cost is saved, and the structure is simplified.

In order to determine the maximum flow position of the valve and facilitate electrically adjusted change or end position, in one embodiment, a limiting protrusion 10 is disposed in the valve body 8 at the upper end of the transmission member 3 for limiting the displacement of the transmission member 3 in the axial direction of the output shaft 2, and the highest position is the maximum flow position.

In order to meet the requirement that one valve is suitable for different application environments, the range changing function is added to one embodiment of the utility model, and multiple ranges are provided. As shown in fig. 4, specifically, the outside of the limiting protrusion 10 is provided with an external thread, the inner side surface of the valve body 8 is provided with an internal thread and an external thread threaded connection of the limiting protrusion 10, the valve body 8 is further provided with a window 11, the limiting protrusion 10 can be contacted with a user through the window 11, and the user can adjust the position of the limiting protrusion 10 relative to the valve body 8. For example, manually rotate its position within the viewing window 11 to the target position, corresponding to a certain range.

The limiting bulge 10 can be shifted to rotate relative to the valve body 8 through the window 11, so that the limiting bulge moves upwards along the axis of the output shaft 2, the limiting plate limits the transmission member 3, and the position adjustment of the conical end of the needle valve 5 relative to the air inlet 7.2 with the maximum position is realized, namely the adjustment of the range of the electric control flow valve.

In one embodiment, as shown in fig. 5, the position-limiting protrusion 10 may be provided with a poke rod 12, the poke rod 12 extends outwards from the window 11, and the outer side wall of the window 11 may be provided with a gear mark. When the tap lever 12 is aligned with the gear mark, the representative position is defined as the gear, and the corresponding gear can correspond to a certain definite flow range after being tested. Therefore, the utility model not only has longer accurate service life, but also can provide different maximum flow regulation and control ranges, and is convenient for accurate and convenient adjustment of the electric control flow valve.

The above-mentioned electronic control flow valve can be used in an oxygen generator, so the utility model also provides an oxygen generator, which comprises a compressor, a gas distribution valve, a ventilation pipeline, a molecular sieve component, a gas storage tank, a control circuit board, an oxygen delivery pipeline and the electronic control flow valve as described in any one or more of the above-mentioned embodiments, wherein the compressor is communicated with the molecular sieve component through the gas distribution valve, the molecular sieve component is communicated with the gas storage tank through the ventilation pipeline, the gas storage tank delivers oxygen to an aerobic part through the oxygen delivery pipeline, the electronic control flow valve is arranged in the oxygen delivery pipeline, the control circuit board is electrically connected with the electronic control flow valve, the control circuit can receive a user's regulating instruction or a flow regulating instruction automatically generated in the machine in a wireless or wired manner, and controlling the flow of the electric control flow valve to regulate the flow of the oxygen pipeline according to a preset flow value. The initial or final position of the electric control flow valve is accurate in positioning during early assembly, so that the repeated flow adjusting process is more accurate.

The above embodiments are not intended to limit the scope of the present invention, and all modifications that can be made by the above embodiments by the following claims and drawings, or by the use of equivalent structures and equivalent processes, or by direct or indirect application to other related technical fields, are intended to be included within the scope of the present invention.

Claims (10)

1. An automatically controlled flow valve which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

a motor having an output shaft provided at one end thereof; and

the valve body is arranged on one side of the motor, the tail end of the valve body is provided with an air inlet, the middle end of the valve body is provided with an air outlet, and the output shaft of the motor is positioned in the valve body; and a process for the preparation of a coating,

the transmission piece is arranged in the valve body and is in threaded connection with the valve body, and the transmission piece and the output shaft are coaxially and rotatably arranged and move along the axial direction of the output shaft; and a process for the preparation of a coating,

the needle valve moves in the valve body along the axial direction of the output shaft, and a conical end of the needle valve is matched with the inner side wall of the air inlet and used for controlling the flow of a passage between the air inlet and the air outlet;

the needle valve with be provided with thrust bearing between the driving medium, the needle valve top thrust bearing with offset in proper order all the time between the driving medium three.

2. An electrically controlled flow valve according to claim 1, characterised in that: and a limiting bulge is arranged in the valve body and positioned at the upper end of the transmission piece and used for limiting the transmission piece to move along the axial direction of the output shaft.

3. An electrically controlled flow valve according to claim 2, characterised in that: the spacing bellied lateral surface is provided with the external screw thread, the medial surface of valve body be provided with the internal thread with spacing bellied external screw thread threaded connection, be provided with the window on the valve body, the window is used for adjusting spacing arch is for the valve body is in output shaft is ascending displacement in the axial.

4. An electrically controlled flow valve according to claim 3, characterised in that: the limiting protrusion is provided with a poke rod, the poke rod is exposed on the outer side wall of the window, and a gear mark is arranged on the outer side wall of the window.

5. An electrically controlled flow valve according to claim 1 or 4, characterised in that: the upper end of needle valve is provided with first boss, the upper end of air inlet is provided with the second boss, first boss with be provided with the elastic component between the second boss, the elastic component makes the needle valve has and keeps away from the motion trend of air inlet, the valve body the gas outlet sets up first boss with between the second boss.

6. An electrically controlled flow valve according to claim 5, characterised in that: the elastic piece is an elastic sheet or a compression spring.

7. An electrically controlled flow valve according to claim 1 or 6, characterised in that: and a sealing ring is arranged at the joint of the needle valve and the side wall of the valve body.

8. An electrically controlled flow valve according to claim 7, characterised in that: the upper end lateral wall of needle valve with the inside wall of valve body is provided with the edge protruding, the groove structure of grafting each other and ability looks friction each other of output shaft axial direction, the arch is in slide the setting in the recess.

9. An electrically controlled flow valve according to claim 7, characterised in that: the needle valve is provided with a vent hole, one end of the vent hole faces to the direction of the air inlet but is not communicated with the air inlet all the time, and the other end of the vent hole penetrates out of the air outlet and moves in the opening of the air outlet along the axial direction of the output shaft.

10. An oxygen generator, characterized in that: the flow valve comprises a compressor, a gas distribution valve, an air vent pipeline, a molecular sieve assembly, a gas storage tank, a control circuit board, an oxygen delivery pipeline and an electric control flow valve as claimed in any one of claims 1 to 4, 6, 8 and 9, wherein the compressor is communicated with the molecular sieve assembly through the gas distribution valve, the molecular sieve assembly is communicated with the gas storage tank through the air vent pipeline, the gas storage tank delivers oxygen to an aerobic part through the oxygen delivery pipeline, the electric control flow valve is arranged in the oxygen delivery pipeline, and the control circuit board is electrically connected with the electric control flow valve.

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