CN114964403A

CN114964403A - Flow meter

Info

Publication number: CN114964403A
Application number: CN202210652322.9A
Authority: CN
Inventors: 周思源
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-08-30

Abstract

The invention discloses a flowmeter, which relates to the technical field of medical instruments, and adopts the technical scheme that: including the flowmeter main part, be provided with inlet channel in the flowmeter main part, outlet channel one and outlet channel two, be provided with the chamber of ventilating in the flowmeter main part, inlet channel is linked together with the chamber of ventilating, it is connected with the knob to rotate in the flowmeter main part, be provided with drive assembly and regulating part in the flowmeter main part, the knob can drive the regulating part through drive assembly and rotate, and through the regulating part rotation control inlet channel and the intercommunication area of ventilating between the chamber, it is provided with the switching rod to slide in the flowmeter main part, the switching rod can be controlled ventilate the chamber and the break-make between outlet channel one or the outlet channel two, this flowmeter can make the user can be according to the accurate control gas flow of actual demand.

Description

Flow meter

Technical Field

The invention relates to the technical field of medical instruments, in particular to a flowmeter.

Background

It is known that an oxygen flow meter is one of the very important instruments in the conventional oxygen therapy equipment of hospitals, and is also one of the necessary tools for rescuing and nursing critical patients, and the oxygen flow meter can measure the flow of oxygen so as to enable medical staff to continuously provide a constant flow of oxygen for patients.

Current oxygen flowmeter, including the humidifying bottle and set up the flow control valve on the humidifying bottle, the flow control valve top is equipped with the flowmeter, flow control valve disposes the interface of admitting air and giving vent to anger the interface, adjust oxygen flow through flow control valve's adjust knob, consequently there is great error in the flow size in the in-service use process, and its flow size is observed to the floating bead that corresponds the measuring tube scale that indicates through the intraductal suspension of measuring, there is certain deviation in the reading of visualing, lead to unable accurate control flow.

Disclosure of Invention

In view of the shortcomings of the prior art, the invention aims to provide a flowmeter which has the advantage of accurately controlling the flow.

The technical purpose of the invention is realized by the following technical scheme: including the flowmeter main part, be provided with inlet channel, air outlet channel one and air outlet channel two in the flowmeter main part, be provided with the chamber of ventilating in the flowmeter main part, inlet channel with the chamber of ventilating is linked together, it is connected with the knob to rotate in the flowmeter main part, be provided with drive assembly and regulating part in the flowmeter main part, the knob passes through drive assembly can drive the regulating part rotates, and passes through regulating part rotation control inlet channel with the intercommunication area between the chamber of ventilating, it is provided with the switching rod to slide in the flowmeter main part, the switching rod can be controlled ventilate the chamber with air outlet channel one or break-make between the air outlet channel two.

Through the technical scheme, when the air supply device is used, the external air supply pipeline can be communicated with the air inlet channel, air in the air supply pipeline flows into the air inlet channel, a user can rotate the knob through external force, the knob drives the adjusting piece to rotate through the transmission assembly, the communicating area between the air inlet channel and the ventilation cavity is controlled through the rotation of the adjusting piece, the flow of the passing air is controlled, and the purpose that the user can accurately control the air flow according to actual requirements is achieved; the user can be according to actual demand, and through external force messenger switching pole slip, switching pole slip control ventilates the break-make between chamber and the passageway of giving vent to anger one or the passageway of giving vent to anger two, and the gas that flows into in the chamber of ventilating can follow passageway of giving vent to anger one or the passageway of giving vent to anger two flows promptly to this satisfies different user demands, and application scope is wide.

Preferably, the regulating part includes the regulating plate, it is provided with the gas circuit board to ventilate chamber (5) internal rotation, regulating plate circumference is fixed on the gas circuit board, the gas circuit board with drive assembly connects, the regulation hole of a plurality of variation in size has been seted up on the regulating plate, inlet channel can with arbitrary one the regulation hole is linked together, the air vent has been seted up on the gas circuit board, the regulation hole with the air vent is linked together, the air vent with it is linked together to ventilate the chamber.

Through the technical scheme, when the user passes through external force and rotates the knob, the knob then accessible drive assembly drives the gas circuit board and rotates, be fixed in the gas circuit board because of regulating plate circumference, then the regulating plate realizes rotating under the drive of gas circuit board, along with the regulating plate rotates, the regulation hole of a plurality of variation in size who sets up on the regulating plate can be linked together with inlet channel respectively, the gas that flows in from inlet channel flows in the intracavity of ventilating through regulation hole and air vent inflow in proper order, the gas flow size that the big or small control through the regulation hole passes through, be linked together through with inlet channel with the regulation hole of variation in size, realize the accurate control of user to gas flow.

Preferably, the gas circuit board is provided with a gas channel groove, the gas channel groove is communicated with the plurality of adjusting holes, and the gas channel groove is communicated with the vent holes.

Through above-mentioned technical scheme, the gas that flows in from inlet channel flows into the air flue inslot after through adjusting the hole, and the gas in the air flue inslot flows into the intracavity of ventilating through the gas vent.

Preferably, the transmission assembly comprises a first bevel gear, a second bevel gear and a connecting shaft, the knob is connected with the first bevel gear, the first bevel gear is meshed with the second bevel gear, the second bevel gear is connected with the connecting shaft, and the connecting shaft is connected with the gas circuit board.

Through the technical scheme, a user rotates the knob through external force, the knob drives the first bevel gear to rotate after rotating, the first bevel gear drives the second bevel gear meshed with the first bevel gear to rotate after rotating, the second bevel gear after rotating drives the gas circuit board to rotate through the connecting shaft, and the adjusting plate is driven by the gas circuit board to rotate.

Preferably, a gear block is arranged on the connecting shaft, a plurality of positioning grooves are formed in the gear block, a placement groove is formed in the flowmeter main body, a spring is arranged in the placement groove, a positioning steel ball is connected to the end of the spring, and the positioning steel ball can abut against the positioning grooves.

Through above-mentioned technical scheme, the connecting axle drives the gear piece after rotating and rotates, and the location steel ball can get into adjacent constant head tank in, and under the effect of spring for the location steel ball can support and lean on in the constant head tank.

Preferably, the adjusting plate is provided with a positioning hole, the gas circuit board is provided with a positioning bulge, and the positioning bulge penetrates through the positioning hole.

Through the technical scheme, the positioning protrusions are matched with the positioning holes, so that the adjusting plate is circumferentially fixed on the gas circuit board.

Preferably, a holding tank is arranged on the flowmeter main body, the switching rod is slidably arranged in the holding tank, the holding tank is communicated with the ventilation cavity, the holding tank is communicated with the first air outlet channel and the second air outlet channel, and the switching rod can separate the ventilation cavity from the first air outlet channel or the ventilation cavity from the second air outlet channel.

Through above-mentioned technical scheme, slide to the relevant position and can cut off the chamber of ventilating with outlet channel one when the switching lever, then outwards flow from outlet channel two from the gas of ventilating in the chamber inflow holding tank, slide to the relevant position and can cut off the chamber of ventilating with outlet channel two when the switching lever, then outwards flow from outlet channel one from the gas of ventilating in the chamber inflow holding tank this moment, the user slides through control switching lever for gas can be followed outlet channel one or outlet channel two and flowed, satisfy different user demands.

Preferably, a reset piece is arranged between the switching rod and the flowmeter main body, and the reset piece is used for resetting the switching rod.

Through above-mentioned technical scheme, under the effect of piece that resets for the switching lever can reset through sliding.

Preferably, a gear groove is formed in the flowmeter main body, a gear pin is connected to the switching rod in a sliding mode, and the gear pin can stretch into the gear groove.

Through above-mentioned technical scheme, gear round pin and gear groove cooperation make the switching rod its position can keep unchangeable under no external force influence, and can prevent that the switching rod from breaking away from the holding tank.

Preferably, the flowmeter main body comprises a shell and a base, and the shell is detachably connected with the base.

Through the technical scheme, the shell is detachably connected with the base, so that the flowmeter main body is convenient to disassemble and assemble.

In summary, compared with the prior art, the beneficial effects of the invention are as follows:

1. a user rotates the knob, the knob drives the gas circuit board and the adjusting plate to rotate through the transmission assembly, the adjusting plate rotates to enable the adjusting holes with different sizes to be communicated with the gas inlet channel, the size of the passing gas flow is controlled through the size of the adjusting holes, and accurate control over the gas flow is achieved;

2. the user can make gas flow out from the first air outlet channel or the second air outlet channel by sliding the switching rod, so that different use requirements are met.

Drawings

FIG. 1 is a sectional view of the first embodiment;

FIG. 2 is another cross-sectional view of the first embodiment;

FIG. 3 is a schematic structural diagram according to a first embodiment;

FIG. 4 is a schematic view of an embodiment of an adjustment plate;

FIG. 5 is a schematic diagram of a circuit board according to one embodiment;

FIG. 6 is a schematic structural diagram of a connecting shaft according to an embodiment;

FIG. 7 is a cross-sectional view of an embodiment of a flow meter body;

FIG. 8 is a schematic view of a switch lever and a shift pin according to an embodiment;

FIG. 9 is a sectional view of the second embodiment.

Reference numerals: 1. a flow meter body; 2. an air intake passage; 3. a first air outlet channel; 4. a second air outlet channel; 5. a vent lumen; 6. a knob; 7. a transmission assembly; 71. a first bevel gear; 72. a second bevel gear; 73. a connecting shaft; 8. an adjustment member; 81. an adjusting plate; 9. a switch lever; 10. an adjustment hole; 11. a vent hole; 12. an airway slot; 13. a gear block; 14. positioning a groove; 15. a placing groove; 16. a spring; 17. positioning the steel balls; 18. positioning holes; 19. positioning a projection; 20. accommodating grooves; 21. a reset member; 22. a gear groove; 23. a gear pin; 24. a gasket; 25. a seal ring; 26. a first groove; 27. a second groove; 28. mounting holes; 29. a screw; 30. a housing; 31. a base; 32. a gas circuit board; 33. moving the ceramic sheet; 34. a static ceramic chip; 35. a first flow hole; 36. and a second flow hole.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

the flowmeter, as shown in fig. 1 to 8, comprises a flowmeter body 1, wherein the flowmeter body 1 comprises a casing 30 and a base 31, the casing 30 is detachably connected with the base 31, preferably, the casing 30 is in threaded connection with the base 31, and a sealing gasket 24 is arranged between the casing 30 and the base 31, although the casing 30 and the base 31 can also be in clamping connection.

Be provided with inlet channel 2 on the flowmeter main part 1, it is concrete, inlet channel 2 sets up on casing 30, is provided with air outlet channel 3 and air outlet channel two 4 on the flowmeter main part 1, and specifically, air outlet channel 3 and air outlet channel two 4 all set up on base 31, and it needs to explain that air outlet channel 3 can be linked together with outside oxygen uptake pipeline, and air outlet channel two 4 can be linked together with outside atomizing pipeline.

The internal ventilation cavity 5 that is provided with of flowmeter main part 1, specifically, the tip of casing 30 has recess 26, and the tip of base 31 has recess 27 two, and when casing 30 is connected with base 31, recess 26 cooperates with recess 27 and forms ventilation cavity 5, and inlet channel 2 is linked together with ventilation cavity 5.

The flowmeter main body 1 is internally provided with a transmission assembly 7 and an adjusting piece 8, specifically, the transmission assembly 7 is positioned in the shell 30, and the adjusting piece 8 is positioned in the vent cavity 5.

The last rotation of flowmeter main part 1 is connected with knob 6, and is concrete, and rotatory rotation is connected in casing 30, and knob 6 can drive adjusting part 8 through drive assembly 7 and rotate, just rotates the area of intercommunication between control inlet channel 2 and the chamber of ventilating 5 through adjusting part 8.

The transmission assembly 7 comprises a first bevel gear 71, a second bevel gear 72 and a connecting shaft 73, the knob 6 is connected with the first bevel gear 71, preferably, the end of the knob 6 is inserted into the first bevel gear 71, the knob 6 and the first bevel gear 71 are coaxially arranged, the first bevel gear 71 is meshed with the second bevel gear 72, the second bevel gear 72 is connected with the connecting shaft 73, preferably, the end of the connecting shaft 73 is inserted into the second bevel gear 72, the connecting shaft 73 and the second bevel gear 72 are coaxially arranged, and the connecting shaft 73 is connected with the adjusting piece 8.

Alternatively, the transmission assembly 7 comprises a turbine, a worm and a transmission shaft, the knob 6 is connected with the worm, the turbine is connected with the transmission shaft, the turbine is connected with the worm in a transmission manner, and the transmission shaft is connected with the adjusting piece 8.

The adjusting part 8 comprises an adjusting plate 81, the air channel plate 32 is rotatably arranged in the ventilation cavity 5, the adjusting plate 81 is circumferentially fixed on the upper end surface of the air channel plate 32, specifically, the adjusting plate 81 is provided with a positioning hole 18, the upper end surface of the air channel plate 32 is provided with a positioning protrusion 19, the positioning protrusion 19 and the air channel plate 32 are integrally formed, and the positioning protrusion 19 penetrates through the positioning hole 18.

The gas circuit board 32 is connected with the transmission assembly 7, specifically, the connecting shaft 73 is connected with the gas circuit board 32, preferably, the gas circuit board 32 is connected with the connecting shaft 73 through a screw 29, the gas circuit board 32 is provided with a mounting hole 28, the screw 29 sequentially penetrates through the mounting hole 28 and the positioning hole 18 to be in threaded connection with the connecting shaft 73, and as another scheme, a splicing connection mode can be adopted between the gas circuit board 32 and the connecting shaft 73.

The adjusting plate 81 is provided with a plurality of adjusting holes 10 with different sizes, preferably, the adjusting holes 10 with different sizes are uniformly distributed along the circumferential direction, the air inlet channel 2 can be communicated with any one of the adjusting holes 10, specifically, the adjusting plate 81 rotates to enable different adjusting holes 10 to be aligned to the air inlet channel 2, switching between different adjusting holes 10 to be communicated with the air inlet channel 2 is achieved, and the sealing ring 25 is arranged between the adjusting plate 81 and the shell 30.

The air channel plate 32 is provided with air vents 11, the air channel plate 32 is provided with air channel grooves 12, preferably, the number of the air vents 11 is two, the air vents 11 are located in the air channel grooves 12, the adjusting holes 10 are communicated with the air vents 11, the air vents 11 are communicated with the air cavity 5, specifically, the air channel grooves 12 are communicated with the adjusting holes 10, the air channel grooves 12 are communicated with the air vents 11, and it needs to be noted that the air channel grooves 12 are formed along the distribution direction of the adjusting holes 10.

Be provided with gear piece 13 on connecting axle 73, gear piece 13 and connecting axle 73 integrated into one piece, a plurality of constant head tank 14 has been seted up on the terminal surface of gear piece 13, a plurality of constant head tank 14 is along circumference evenly distributed, place the groove 15 in the flowmeter main part 1, it is specific, place the groove 15 and set up in casing 30, it is preferred, place the groove 15 and have two, be provided with spring 16 in the groove 15 of placing, spring 16 and place the groove 15 one-to-one, spring 16's end connection has location steel ball 17, location steel ball 17 and spring 16 one-to-one, location steel ball 17 can support and lean on in constant head tank 14.

A switching rod 9 is arranged on the flowmeter main body 1 in a sliding mode, and the switching rod 9 can control the on-off of the ventilation cavity 5 and the first air outlet channel 3 or the second air outlet channel 4.

Holding tank 20 has been seted up on flowmeter main part 1, it is concrete, holding tank 20 is seted up on the lateral wall of base 31, switching lever 9 slides and sets up in holding tank 20, holding tank 20 is linked together with the chamber 5 of ventilating, holding tank 20 is linked together with air outlet channel one 3 and air outlet channel two 4, switching lever 9 can cut off air outlet channel one 3 with air outlet channel one 3 or air outlet channel 5 with air outlet channel two 4, it is concrete, switching lever 9 slides to relevant position, then can cut off air outlet channel one 3 with air outlet channel 5 or air outlet channel two 4 cuts off with air outlet channel 5, it is required to explain, switching lever 9 can be with holding tank 20's opening shutoff, prevent that gaseous from flowing down after getting into holding tank 20 from holding tank 20's opening.

Alternatively, the switching lever 9 may block the communication hole between the housing groove 20 and the first outlet channel 3 or the communication hole between the housing groove 20 and the second outlet channel 4.

A reset piece 21 is arranged between switching lever 9 and flowmeter body 1, and reset piece 21 is used for resetting switching lever 9, and preferably, reset piece 21 adopts a reset spring, one end of which abuts against the bottom surface of accommodation groove 20, and the other end of which abuts against the end surface of switching lever 9.

Alternatively, the return member 21 may be formed of two magnetically repulsive magnets, one of which is mounted on the bottom surface of the housing groove 20 and the other of which is mounted on the end surface of the switching lever 9.

The flowmeter main body 1 is provided with a gear groove 22, the switching rod 9 is connected with a gear pin 23 in a sliding manner, a return spring for returning the gear pin 23 is arranged between the gear pin 23 and the switching rod 9, the gear pin 23 can extend into the gear groove 22 under the action of the return spring, and it should be noted that the gear groove 22 can limit the gear pin 23, so that the switching rod 9 is kept unchanged at a corresponding position, and specifically, the side wall of the gear pin 23 can abut against the side wall of the gear groove 22.

The working principle of the flowmeter is as follows:

when the air supply device is used, an external air supply pipeline is communicated with the air inlet channel 2, air in the air supply pipeline flows into the air inlet channel 2, a user can rotate the knob 6 through external force, the knob 6 rotates to drive the first bevel gear 71 to rotate, the first bevel gear 71 rotates to drive the second bevel gear 72 meshed with the first bevel gear to rotate, the second bevel gear 72 rotates to drive the connecting shaft 73 to rotate, the gear block 13 rotates synchronously with the connecting shaft 73, the positioning steel balls 17 continuously enter different positioning grooves 14 along with the rotation of the gear block 13, the positioning steel balls 17 abut against the positioning grooves 14 under the action of the spring 16, the rotating connecting shaft 73 drives the air channel plate 32 to rotate, the adjusting plate 81 rotates under the drive of the air channel plate 32, different adjusting holes 10 are communicated with the air inlet channel 2 along with the rotation of the adjusting plate 81, air flowing from the air inlet channel 2 flows into the air channel 12 through the adjusting holes 10, the gas in the gas channel groove 12 flows into the ventilation cavity 5 through the vent hole 11, and the gas in the ventilation cavity 5 flows into the holding groove 20;

the user promotes the switching rod 9 through external force and slides, slides to the relevant position when switching rod 9 and cuts off cavity 5 and air outlet channel 3 of ventilating, and the gas that flows into holding tank 20 from cavity 5 of ventilating then flows out from air outlet channel two 4, slides to the relevant position when switching rod 9 and cuts off cavity 5 and air outlet channel two 4 of ventilating, and the gas that flows into holding tank 20 from cavity 5 of ventilating then flows out from air outlet channel one 3.

The second embodiment:

the difference between the second embodiment and the first embodiment is that: as shown in fig. 9, the adjusting member 8 includes a movable ceramic piece 33, the movable ceramic piece 33 is located in the ventilation cavity 5, the movable ceramic piece 33 is connected with a connecting shaft 73, a static ceramic piece 34 is fixed in the ventilation cavity 5 in the inner circumferential direction, the movable ceramic piece 33 is rotatably disposed on the upper end surface of the static ceramic piece 34, it should be noted that the movable ceramic piece 33 and the static ceramic piece 34 are matched to separate the gas in the ventilation cavity 5, specifically, the movable ceramic piece 33 is provided with a first flow hole 35, the first flow hole 35 is communicated with the intake channel 2, the static ceramic piece 34 is provided with a second flow hole 36, the second flow hole 36 is communicated with the ventilation cavity 5, the movable ceramic piece 33 can block the second flow hole 36 by rotating, the first flow hole 35 can be communicated with the second flow hole 36 by rotating the movable ceramic piece 33, and the gas flow rate passing through is controlled by the opening degree of the second flow hole 36, so as to control the gas flow rate.

The above description is intended to be illustrative of the present invention and not to limit the scope of the invention, which is defined by the claims appended hereto.

Claims

1. A flowmeter comprising a flowmeter body (1), characterized in that: the flowmeter main body (1) is provided with an air inlet channel (2), an air outlet channel I (3) and an air outlet channel II (4), a ventilation cavity (5) is arranged in the flowmeter main body (1), the air inlet channel (2) is communicated with the ventilation cavity (5), the flowmeter main body (1) is rotatably connected with a knob (6), a transmission component (7) and an adjusting piece (8) are arranged in the flowmeter main body (1), the knob (6) can drive the adjusting piece (8) to rotate through the transmission component (7), and the communication area between the air inlet channel (2) and the ventilation cavity (5) is controlled by the rotation of the adjusting piece (8), the flowmeter is characterized in that a switching rod (9) is arranged on the flowmeter body (1) in a sliding mode, and the switching rod (9) can control the on-off of the ventilation cavity (5) and the air outlet channel I (3) or the air outlet channel II (4).

2. The flowmeter of claim 1, wherein: regulating part (8) include regulating plate (81), it is provided with gas circuit board (32) to ventilate chamber (5) internal rotation, regulating plate (81) circumference is fixed on gas circuit board (32), gas circuit board (32) with drive assembly (7) are connected, the regulation hole (10) of a plurality of variation in size have been seted up on regulating plate (81), inlet channel (2) can with arbitrary one regulation hole (10) are linked together, air vent (11) have been seted up on gas circuit board (32), regulation hole (10) with air vent (11) are linked together, air vent (11) with ventilate chamber (5) are linked together.

3. A flowmeter according to claim 2, wherein: the air channel plate (32) is provided with an air channel groove (12), the air channel groove (12) is communicated with the plurality of adjusting holes (10), and the air channel groove (12) is communicated with the vent holes (11).

4. A flowmeter according to claim 2, wherein: the transmission assembly (7) comprises a first bevel gear (71), a second bevel gear (72) and a connecting shaft (73), the knob (6) is connected with the first bevel gear (71), the first bevel gear (71) is meshed with the second bevel gear (72), the second bevel gear (72) is connected with the connecting shaft (73), and the connecting shaft (73) is connected with the gas circuit board (32).

5. The flowmeter of claim 4, wherein: the flowmeter is characterized in that a gear block (13) is arranged on the connecting shaft (73), a plurality of positioning grooves (14) are formed in the gear block (13), a placement groove (15) is formed in the flowmeter body (1), a spring (16) is arranged in the placement groove (15), the end portion of the spring (16) is connected with positioning steel balls (17), and the positioning steel balls (17) can be abutted against the positioning grooves (14).

6. A flowmeter according to claim 2, wherein: the air-conditioning plate is characterized in that the adjusting plate (81) is provided with a positioning hole (18), the air channel plate (32) is provided with a positioning bulge (19), and the positioning bulge (19) penetrates through the positioning hole (18).

7. The flowmeter of claim 1, wherein: holding tank (20) have been seted up on flowmeter main part (1), switching pole (9) slide set up in holding tank (20), holding tank (20) with ventilate chamber (5) and be linked together, holding tank (20) with give vent to anger passageway (3) and give vent to anger passageway two (4) and be linked together, switching pole (9) can with ventilate chamber (5) with give vent to anger passageway (3) or ventilate chamber (5) with give vent to anger passageway two (4) and cut off.

8. The flowmeter of claim 1, wherein: a reset piece (21) is arranged between the switching rod (9) and the flowmeter main body (1), and the reset piece (21) is used for resetting the switching rod (9).

9. The flowmeter of claim 1, wherein: the flowmeter is characterized in that a gear groove (22) is formed in the flowmeter main body (1), a gear pin (23) is connected to the switching rod (9) in a sliding mode, and the gear pin (23) can stretch into the gear groove (22).

10. The flowmeter of claim 1, wherein: the flowmeter main body (1) comprises a shell (30) and a base (31), wherein the shell (30) is detachably connected with the base (31).