CN217814985U

CN217814985U - Electronic flow valve and oxygen generator using same

Info

Publication number: CN217814985U
Application number: CN202222001888.3U
Authority: CN
Inventors: 刘峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2022-11-15
Anticipated expiration: 2032-08-01

Abstract

The utility model discloses an electron flow valve and use its oxygenerator belongs to the flow control valve field. The utility model discloses an electronic flow valve, which comprises a valve body, case and step motor, the case is installed in the valve body, and change the flow size with rotatory mode, step motor's motor shaft is connected with the case transmission, be equipped with a plurality of inserted sheet installation positions that distribute in case circumference on the valve body, be equipped with on the case with the spacing arch of foretell spacing inserted sheet matched with, spacing inserted sheet has two kinds at least different specifications, the spacing inserted sheet of every specification all includes the spacing portion of inserted sheet base and circumference, the circumference position of the spacing portion of circumference on the inserted sheet base of different specifications is different. The utility model discloses can select the spacing inserted sheet that corresponds to carry on spacingly to it according to case original point position, can improve the spacing precision of inserted sheet, improve the flow control precision and the life of electron flow valve to can reduce trouble and the cost that producer's procedure control process brought.

Description

Electronic flow valve and oxygen generator using same

Technical Field

The utility model relates to a flow control valve, more specifically say, relate to an electron flow valve and use its oxygenerator.

Background

An electronic flow valve (also called "electronic flow meter") is used for regulating oxygen flow in an oxygen generator, and generally adopts a stepping motor to control the rotation of a valve core inside a flow valve, wherein the valve core is in threaded fit with a valve body, so that the axial movement of the valve core is utilized to control the flow.

The stepping motor controls the opening of the valve core by controlling the rotation angle of the valve core through a preset program, so that the flow of oxygen passing through the pipeline is changed. Generally speaking, when the valve core is closed to death, the flow is zero, and at the moment, the valve core serves as an original point, during the work, the working stroke of the valve core is one circle, and due to the existence of processing and assembling errors, the original point position of the valve core in the valve body is difficult to unify, so that an oxygenerator manufacturer needs to adjust the original point position of the flow valve through a program and limit the position of the valve core by using a positioning insertion sheet. The function of the positioning insertion sheet is that the valve core is blocked when the valve core returns to the original point and rotates for a circle (terminal point), because the slots of the positioning insertion sheet on the valve body are arranged at intervals, and in order to ensure the structural strength of the valve body, the number of the slots cannot be too many, and the positioning of the positioning insertion sheet has large errors. Current electronic flow valve sets up 8 slots at the circumferencial direction, there is the angle difference that is close 45 between two adjacent slots promptly, just so hardly guarantee to fix a position the inserted sheet and just carry on spacingly to the case in the initial point position, current electronic flowmeter's location inserted sheet is unable accurate positioning initial point and terminal point position almost, step motor's error accumulation, including lack the restriction of initial point and terminal point, thereby can lead to step motor's rotation can cause the case to damage because of above problem, and then make electronic flowmeter damage.

Therefore, the problems of great error and easy damage of flow regulation of the electronic flow valve are caused due to the fact that the original point and the final point of the valve core are not accurately positioned, and troubles and cost caused by program regulation of the stepping motor are added for an oxygen generator manufacturer.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the above-mentioned not enough that current electronic flow valve exists, provide an electronic flow valve and use its oxygenerator, adopt the technical scheme of the utility model, on the basis of original electronic flow valve, through the spacing inserted sheet of two kinds of different specifications at least of design, the circumference position of the spacing portion on the inserted sheet base of circumference of different specifications is different, can select the spacing inserted sheet that corresponds to carry on spacingly to it according to case initial position to can improve the spacing precision of inserted sheet to case initial position and terminal point position, improve the flow control precision and the life of electronic flow valve, and can reduce trouble and the cost that producer's procedure accommodation process brought.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses an electronic flow valve, including valve body, case and step motor, the valve body on have air inlet and gas outlet, the case install in the valve body to change the flow size between air inlet and the gas outlet on the valve body with rotatory mode, step motor's motor shaft be connected with the case transmission for drive case at the valve body internal rotation, the valve body on be equipped with a plurality of inserted sheet installation positions that distribute in case circumference, and selectively install spacing inserted sheet on one of them inserted sheet installation position, the case on be equipped with the spacing arch of foretell spacing inserted sheet matched with, spacing inserted sheet have two kind at least different specifications, the spacing inserted sheet of each specification all includes the inserted sheet base and locates the spacing portion in circumference on the inserted sheet base, the circumference position of the spacing portion on the inserted sheet base of different specifications is different.

Furthermore, one side or two sides of the inserting piece base are provided with inserting buckles.

Furthermore, the limiting insertion sheet can be positively installed or inversely installed on the insertion sheet installation position.

Furthermore, a plurality of clamping tenons arranged at intervals in slots are circumferentially distributed on the valve body by taking the rotating axis of the valve core as the center, the slots form the inserting piece mounting positions, and the limiting inserting pieces are inserted into the corresponding slots.

Furthermore, the number of the slots is 8 in the circumferential direction.

Furthermore, the valve core is in threaded connection with the valve body, a sealing ring is arranged between the valve core and the valve body, and the valve core moves axially while driving the rotating motion through a stepping motor to change the flow between the air inlet and the air outlet on the valve body.

Furthermore, the stepping motor is fixed on the valve body through a screw, one end of the valve core, which is close to the stepping motor, is axially provided with an insertion hole, the insertion hole is provided with a non-circular section, the section shape of a motor shaft of the stepping motor is matched with the section shape of the insertion hole, the motor shaft of the stepping motor is inserted into the insertion hole of the valve core, and the motor shaft and the insertion hole can axially slide.

The utility model discloses an oxygenerator, including oxygen conveying line, oxygen conveying line have foretell electronic flow valve.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) The utility model discloses an electronic flow valve, it includes the valve body, case and step motor, the case is installed in the valve body, and change the flow size between air inlet and the gas outlet on the valve body with rotatory mode, step motor's motor shaft is connected with the case transmission, be used for driving the case and rotate in the valve body, be equipped with a plurality of inserted sheet installation positions that distribute in case circumference on the valve body, and install spacing inserted sheet on one of them inserted sheet installation position selectively, be equipped with the spacing arch that matches with above-mentioned spacing inserted sheet on the case, spacing inserted sheet has two kinds of different specifications at least, spacing inserted sheet of each specification all includes the inserted sheet base and locates the spacing portion of circumference on the inserted sheet base, the spacing portion of circumference on the spacing inserted sheet of different specifications is different on the circumferential position of inserted sheet base; on the basis of the original electronic flow valve, by designing at least two limit inserting pieces with different specifications, different limit inserting pieces on the same inserting piece mounting position have different limit positions, which is equivalent to further dividing the angle difference between the adjacent inserting piece mounting positions into a plurality of small-angle positions, and selecting the corresponding limit inserting piece to limit the valve core according to the original position of the valve core, so that the limit precision of the inserting pieces on the original position and the final position of the valve core can be improved, the flow control precision and the service life of the electronic flow valve can be improved, and the trouble and the cost brought by the program adjusting process of a manufacturer can be reduced; compared with the existing electronic flow valve, only a plurality of limit inserting pieces with different specifications need to be designed, the structure is simple, and the manufacture and the assembly are very convenient;

(2) In the electronic flow valve of the utility model, one side or two sides of the inserting sheet base are also provided with the inserting buckles, and the inserting buckles are utilized to ensure that the limiting inserting sheet is stably and reliably installed on the inserting sheet installation position, so that the limiting of the limiting inserting sheet on the valve core is more stable and accurate;

(3) The utility model discloses an electronic flow valve, its spacing inserted sheet can just be adorned or the face-down mounting on the inserted sheet installation position, and the spacing inserted sheet of such a specification can have two spacing positions, can reduce the preparation kind of spacing inserted sheet, reduces the die sinking cost of spacing inserted sheet;

(4) The utility model discloses an electronic flow valve, its valve body uses the axis of rotation of case as the central circumference to distribute a plurality of card falcons that set up with the slot interval, and the slot constitutes foretell inserted sheet installation position, and spacing inserted sheet pegs graft in corresponding slot, adopts above-mentioned structure, simple structure, and the preparation is convenient, and card falcon structural strength is high, is difficult for the fracture damage;

(5) The utility model discloses an electronic flow valve, adopt threaded connection between its case and the valve body, still be equipped with the sealing washer between case and the valve body, axial displacement changes the flow size between air inlet and the gas outlet on the valve body when case passes through step motor drive rotary motion, adopts above-mentioned screw to revolve wrong flow control design, and flow rotation control accuracy is high, adjusts nimble conveniently;

(6) The utility model discloses an electronic flow valve, its step motor passes through the fix with screw on the valve body, and the case is close to the one end axial of step motor and is equipped with the jack, and the jack has non-circular cross section, and the cross sectional shape of the motor shaft of step motor and the cross sectional shape looks adaptation of jack, and the motor shaft of step motor inserts in the jack of case, and can slide axially between motor shaft and the jack, and step motor and case assembly are simple and convenient, and the transmission is reliable and stable;

(7) The utility model discloses an oxygenerator, including oxygen conveying line, oxygen conveying line has foretell electronic flow valve for the oxygen flow control of oxygenerator is convenient accurate, and the step motor of electronic flow valve can accurate return to zero at every turn and rotate, has effectively eliminated step motor's accumulative error, has improved the control accuracy of oxygen flow.

Drawings

Fig. 1 is a schematic perspective view of an electronic flow valve according to the present invention;

fig. 2 is a schematic cross-sectional structural diagram of an electronic flow valve according to the present invention;

fig. 3 is a schematic view of a split structure of an electronic flow valve according to the present invention;

fig. 4 is a schematic view of an installation state of a limit insertion sheet of one specification on a valve body in the electronic flow valve of the present invention;

FIG. 5 is a schematic view of the installation state of a position-limiting insertion sheet of another specification in the electronic flow valve of the present invention on the valve body;

fig. 6 is a schematic structural view of several kinds of spacing insertion pieces in the present invention.

The reference numerals in the schematic drawings illustrate:

1. a valve body; 1-1, an air inlet; 1-2, an air outlet; 1-3, clamping falcon; 1-4, a slot; 2. a valve core; 2-1, limiting bulges; 2-2, sealing rings; 2-3, a jack; 3. a stepping motor; 4. a limiting inserting sheet; 4-1, an insert base; 4-2, a circumferential limiting part; 4-3, inserting and buckling.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

[ examples ]

Referring to fig. 1 to 6, the electronic flow valve of the embodiment includes a valve body 1, a valve core 2 and a stepping motor 3, the valve body 1 has an air inlet 1-1 and an air outlet 1-2, the valve core 2 is installed in the valve body 1, and changes the flow between the air inlet 1-1 and the air outlet 1-2 on the valve body 1 in a rotating manner, a motor shaft of the stepping motor 3 is in transmission connection with the valve core 2 for driving the valve core 2 to rotate in the valve body 1, the valve body 1 is provided with a plurality of insert installation positions distributed circumferentially on the valve core 2, and selectively one of the insert installation positions is provided with a limiting insert 4, the valve core 2 is provided with a limiting protrusion 2-1 matched with the limiting insert 4, the limiting insert 4 has at least two different specifications, the limiting insert 4 of each specification includes an insert base 4-1 and a circumferential limiting portion 4-2 on the insert base 4-1, the circumferential limiting portion 4-2 on the limiting insert base 4-1 of different specifications is different in circumferential position on the insert base 4-1, and the circumferential limiting portion 4-2 is used for matching with the limiting protrusion 2-1 to limit the valve core 2. When the stepping motor works, the stepping motor 3 drives the valve core 2 to rotate to adjust the flow between the air inlet 1-1 and the air outlet 1-2, when the stepping motor 3 drives the valve core 2 to return to the original position, the circumferential limiting part 4-2 on the limiting inserting piece 4 limits the valve core 2, so that the stepping motor 3 can accurately return to zero and rotate at each time, the stepping motor 3 can be limited at a rotation end position (maximum flow position), the stepping motor is ensured to be between a minimum value and a maximum value during each work, the accumulated error of the stepping motor 3 is effectively eliminated, and the flow control precision is improved. Compared with the existing electronic flow valve, by designing at least two limiting insertion pieces 4 with different specifications, different limiting insertion pieces 4 have different limiting positions on the same insertion piece mounting position, which is equivalent to further dividing the angle difference between adjacent insertion piece mounting positions into a plurality of small-angle positions, and the corresponding limiting insertion piece 4 can be selected to limit the insertion piece according to the original point position of the valve core, so that the limiting precision of the insertion piece can be improved, the flow control precision and the service life of the electronic flow valve can be improved, and the trouble and the cost brought by the program adjusting process of a manufacturer can be reduced; compared with the existing electronic flow valve, only a plurality of limit inserting pieces 4 with different specifications need to be designed, the structure is simple, and the manufacture and the assembly are very convenient.

As shown in fig. 3 to 5, in order to facilitate installation and positioning of the limiting insertion piece 4, an insertion buckle 4-3 is further arranged on one side or two sides of the insertion piece base 4-1. The inserting buckle 4-3 is provided with an inserting plate which is inserted and matched with the inserting plate installation position and a clasp which is positioned on the inserting plate, after the limiting inserting plate 4 is installed on the inserting plate installation position, the inserting plate of the inserting buckle 4-3 is inserted into the inserting plate installation position, the inserting plate base 4-1 and the clasp are utilized to enable the limiting inserting plate 4 to be stably positioned on the inserting plate installation position, the installation is stable and reliable, and the limiting of the limiting inserting plate 4 to the valve core 2 is more stable and accurate. FIG. 6 shows several sizes of the stop insert 4, in FIG. 6 (a), the circumferential stop 4-2 is located at the leftmost side of the insert base 4-1; in FIG. 6 (c), the circumferential stopper 4-2 is located in the middle of the insert base 4-1; in fig. 6 (b), the position of the circumferential direction restricting portion 4-2 on the insert base 4-1 is between fig. 6 (a) and (c). According to specific requirements, a plurality of limiting insertion pieces 4 with circumferential limiting parts 4-2 at different positions can be further added to further improve the limiting precision. Further, foretell spacing inserted sheet 4 can just adorn or the flip-chip on the inserted sheet installation position, and spacing inserted sheet 4 of such specification can have two spacing positions, can reduce the preparation kind of spacing inserted sheet 4, reduces the die sinking cost of spacing inserted sheet 4. As shown in fig. 6, (a) and (b) of fig. 6 are arranged upright and inverted to realize two different positioning positions, so that one position-limiting insertion sheet 4 can have two position-limiting positions, and the manufacturing types of the position-limiting insertion sheet 4 are reduced.

As shown in fig. 3 to 5, in the present embodiment, a plurality of clamping tenons 1-3 are circumferentially distributed on the valve body 1 around the rotation axis of the valve core 2 and are arranged at intervals in the slots 1-4, the slots 1-4 form the above-mentioned insert mounting positions, and the limiting inserts 4 are inserted into the corresponding slots 1-4. Specifically, the clamping falcon 1-3 can be formed by arranging slots 1-4 at intervals on a circular boss, and the clamping falcon 1-3 is used for positioning the limiting insertion piece 4 so that the limiting insertion piece 4 is stably installed. By adopting the structure, the structure is simple, the manufacture is convenient, the clamping falcon 1-3 is high in structural strength, and the clamping falcon is not easy to break and damage. Preferably, the number of the slots 1-4 is 8, so that the included angle between the adjacent slots 1-4 is 45 degrees, and if several kinds of the limiting insertion pieces 4 in fig. 6 are taken as examples, the limiting insertion pieces 4 can be installed in a positive and negative mode to realize five different limiting positions, so that the included angle of 45 degrees can be further divided into six small angles, the wall thickness part of the circumferential limiting part 4-2 is removed, and the limiting precision can be higher.

In the electronic flow valve of the embodiment, the valve core 2 changes the flow between the air inlet 1-1 and the air outlet 1-2 on the valve body 1 in a rotating manner, and optionally, a vent hole can be arranged on the valve core 2, and the size of the vent hole is changed by the rotation of the valve core 2, so that the flow size is changed. Referring to fig. 1 and 2, in this embodiment, the valve element 2 is in threaded connection with the valve body 1, a sealing ring 2-2 is further disposed between the valve element 2 and the valve body 1, and the valve element 2 changes the flow rate between the air inlet 1-1 and the air outlet 1-2 on the valve body 1 by axial displacement while being driven to rotate by the stepping motor 3. In the rotation process of the valve core 2, the front end of the valve core 2 can be screwed in or out in a flow channel between the air inlet 1-1 and the air outlet 1-2, so that the flow between the air inlet 1-1 and the air outlet 1-2 can be changed. By adopting the design of the thread screwing flow regulation, the flow rotation regulation precision is high, and the regulation is flexible and convenient. The stepping motor 3 is fixed on the valve body 1 through a screw, one end of the valve core 2 close to the stepping motor 3 is axially provided with an insertion hole 2-3, the insertion hole 2-3 is provided with a non-circular cross section, the cross section shape of a motor shaft of the stepping motor 3 is matched with the cross section shape of the insertion hole 2-3, the motor shaft of the stepping motor 3 is inserted into the insertion hole 2-3 of the valve core 2, the motor shaft and the insertion hole 2-3 can axially slide, the stepping motor 3 and the valve core 2 are simple and convenient to assemble, and the transmission is stable and reliable. The relative positions of the air inlet 1-1 and the air outlet 1-2 are not limited to the situation in the drawings, and the positions of the air inlet 1-1 and the air outlet 1-2 can be interchanged, and the positions of the air inlet 1-1 and the air outlet 1-2 can be specifically selected according to the needs.

The electronic flow valve can be used in an oxygen generator. The embodiment also discloses an oxygenerator, and it includes oxygen delivery line, has foretell electronic flow valve at oxygen delivery line for the oxygen flow control of oxygenerator is convenient accurate, and the step motor of electronic flow valve can accurately return to zero at every turn and rotate, has effectively eliminated step motor's accumulative total error, has improved the control accuracy of oxygen flow. Other structures and working principles of the oxygen generator are the same as those of the prior art, and are not described herein again.

The utility model discloses an electronic flow valve and use its oxygenerator, it is on the basis of original electronic flow valve, through designing the spacing inserted sheet of at least two kinds of different specifications, different spacing inserted sheets have different spacing positions on same inserted sheet installation position, it is equivalent to further dividing the angle difference between adjacent inserted sheet installation positions into several small-angle positions, can select the corresponding spacing inserted sheet to carry on spacing to it according to the former point of valve core position, thus can improve the spacing precision of inserted sheet to former point of valve core position and terminal point, improve the flow control precision and life of electronic flow valve, and can reduce trouble and cost that the producer procedure adjustment process brought; compared with the existing electronic flow valve, only a plurality of limit insertion pieces with different specifications need to be designed, the structure is simple, and the manufacture and the assembly are very convenient. The oxygen flow of the oxygen generator is conveniently and accurately adjusted by adopting the electronic flow valve, the stepping motor of the electronic flow valve can accurately return to zero and rotate at each time, the accumulated error of the stepping motor is effectively eliminated, and the control precision of the oxygen flow is improved.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art should understand the present invention, without departing from the spirit of the present invention, the person skilled in the art should not inventively design the similar structural modes and embodiments to the technical solution, and all shall fall into the protection scope of the present invention.

Claims

1. The utility model provides an electron flow valve, includes valve body (1), case (2) and step motor (3), valve body (1) on have air inlet (1-1) and gas outlet (1-2), case (2) install in valve body (1) to change the flow size between air inlet (1-1) and gas outlet (1-2) on valve body (1) with rotatory mode, step motor (3) motor shaft and case (2) transmission be connected for drive case (2) internal rotation in valve body (1), valve body (1) on be equipped with a plurality of inserted sheet installation positions at case (2) circumferential distribution, and selectively install spacing inserted sheet (4) on one of them inserted sheet installation position, case (2) on be equipped with spacing arch (2-1) of foretell spacing inserted sheet (4) matched with, its characterized in that: the limiting insertion sheet (4) has at least two different specifications, the limiting insertion sheet (4) of each specification comprises an insertion sheet base (4-1) and a circumferential limiting part (4-2) arranged on the insertion sheet base (4-1), and the circumferential limiting parts (4-2) on the limiting insertion sheets (4) of different specifications are different in circumferential position on the insertion sheet base (4-1).

2. The electronic flow valve of claim 1, wherein: one side or two sides of the inserting piece base (4-1) are also provided with inserting buckles (4-3).

3. The electronic flow valve of claim 1, wherein: the limiting insertion sheet (4) can be positively installed or inversely installed on the insertion sheet installation position.

4. The electronic flow valve of claims 1 or 2 or 3 wherein: the valve body (1) is circumferentially provided with a plurality of clamping tenons (1-3) which are arranged at intervals in the slots (1-4) by taking the rotation axis of the valve core (2) as the center, the slots (1-4) form the inserting piece mounting positions, and the limiting inserting pieces (4) are inserted into the corresponding slots (1-4).

5. The electronic flow valve of claim 4 wherein: the number of the slots (1-4) is 8 in the circumferential direction.

6. The electronic flow valve of claim 4 wherein: the valve core (2) is in threaded connection with the valve body (1), a sealing ring (2-2) is further arranged between the valve core (2) and the valve body (1), and the valve core (2) is driven by the stepping motor (3) to rotate and simultaneously axially moves to change the flow between the air inlet (1-1) and the air outlet (1-2) on the valve body (1).

7. The electronic flow valve of claim 6, wherein: the stepping motor (3) is fixed on the valve body (1) through a screw, one end, close to the stepping motor (3), of the valve core (2) is axially provided with an insertion hole (2-3), the insertion hole (2-3) is provided with a non-circular cross section, the cross section shape of a motor shaft of the stepping motor (3) is matched with that of the insertion hole (2-3), the motor shaft of the stepping motor (3) is inserted into the insertion hole (2-3) of the valve core (2), and the motor shaft and the insertion hole (2-3) can axially slide.

8. An oxygenerator, includes oxygen conveying line, its characterized in that: the oxygen delivery line has an electronic flow valve as claimed in any one of claims 1 to 7.